Patent Publication Number: US-2023142653-A1

Title: Climate-controlled topper member for beds

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     Any and all applications for which a foreign or domestic priority claim is identified in the Application Data Sheet as filed with the present application are incorporated by reference under 37 CFR 1.57 and made a part of this specification. 
     BACKGROUND 
     Field 
     This application relates to climate control, and more specifically, to climate control of medical beds, hospital beds, other types of beds and similar devices. 
     Description of the Related Art 
     Pressure ulcers, which are also commonly referred as decubitus ulcers or bed sores, are lesions that form on the body as a result of prolonged contact with a bed or other surface. Bed sores typically result from exposure to one or more factors, such as, for example, unrelieved pressure, friction or other shearing forces, humidity (e.g., moisture caused by perspiration, incontinence, exudate, etc.), elevated temperatures, age and/or the like. Although such ulcers may occur to any part of the body, they normally affect bony and cartilaginous areas (e.g., the sacrum, elbows, knees, ankles, etc.). 
     One known method of preventing decubitus ulcers for patients who are confined to beds or other seating assemblies for prolonged time periods includes pressure redistribution or pressure reduction. Pressure redistribution generally involves spreading the forces created by an occupant&#39;s presence on a bed over a larger area of the occupant-bed interface. Thus, in order to accomplish pressure redistribution, a bed or other support structure can be designed with certain immersion and envelopment characteristics. For example, a desired depth of penetration (e.g., sinking level) can be provided along the upper surface of the bed when an occupant is situated thereon. Relatedly, an upper portion of a bed can be adapted to generally conform to the various irregularities of the occupant&#39;s body. 
     In order to help prevent the occurrence of decubitus ulcers, one or more other factors may also be targeted, either in addition to or in lieu of pressure redistribution. For example, lower shear materials can be used at the occupant-bed interface. Further, temperature and moisture levels along certain areas of an occupant&#39;s body can be reduced. In addition, the control of certain factors, such as high pressure, temperature, friction, moisture and/or the like, may improve the general comfort level of an occupant, even where decubitus ulcers are not a concern. Accordingly, a need exists to provide a conditioner mat or topper member for a bed (e.g., hospital or other medical bed) or other seating assembly that provides certain climate-control features to help prevent bed sores and/or help enhance comfort. 
     SUMMARY 
     According to some embodiments, a conditioner mat for use with a bed assembly comprises an upper layer having a plurality of openings and a lower layer being substantially fluid impermeable. In some embodiments, the upper layer is attached to the lower layer along a periphery of the conditioner mat. The mat further comprises an interior chamber defined between the upper layer and the lower layer and a spacer material positioned within the interior chamber, wherein the spacer material is configured to maintain a shape of the interior chamber and configured to help with the passage of fluids within at least a portion of the interior chamber. In some embodiments, the conditioner mat further includes one or more inlets in fluid communication with the interior chamber and one or more fluid modules comprising a fluid transfer device. In some embodiments, the mat additionally includes a conduit connecting an outlet of the fluid module with the inlet, and at least one fluid impermeable member positioned within the interior chamber, wherein the fluid impermeable member generally forms a non-fluid zone. In some embodiments, the conditioner mat includes a control module for regulating at least one operational parameter of the at least one fluid module and a user input device configured to receive at least one climate control setting of the bed assembly. Further, the mat includes at least one power supply adapted to selectively provide electrical power to the at least one fluid module. In some embodiments, the fluid module selectively delivers fluids to the interior chamber through the conduit and the inlet. In some embodiments, fluids entering the interior chamber through the inlet are generally distributed by the spacer material before exiting through the plurality of openings along the upper layer. In one embodiment, fluids entering the interior chamber are generally not permitted to flow through the non-fluid zone(s). In some embodiments, a thickness of the conditioner mat along the non-fluid zone is generally equal to a thickness of the conditioner mat along a portion of the conditioner mat that comprises a spacer material, and the conditioner mat is configured to be removably placed on top of a bed assembly to selectively deliver fluids to an occupant positioned thereon. 
     According to some embodiments, the upper layer and the lower layer comprise a unitary structure. In other embodiments, the upper layer and the lower layer comprise separate members. In one embodiment, the fluid impermeable member comprises foam. In some embodiments, the non-fluid zone generally separates at least two areas of the conditioner mat that comprise spacer material. In several embodiments, the fluid module is configured to thermally condition fluid being transferred from the fluid transfer device to the interior chamber of the conditioner mat. In some embodiments, the fluid module comprises a thermoelectric device configured to selectively heat or cool fluid being transferred to the interior chamber of the conditioner mat. In one embodiment, the mat further includes at least one securement device for securing the conditioner mat to the bed assembly. In some embodiments, the mat additionally comprises one or more moisture sensors configured to detect a presence of liquid on or within the conditioner mat and/or any other type of sensor (e.g., temperature sensor, pressure sensor, etc.). In one embodiment, the mat further includes at least one fluid distribution member positioned on top of the upper layer, wherein such a fluid distribution member is configured to help distribute fluid flow exiting the plurality of openings of the upper layer. 
     According to certain embodiments, a topper member for use with a bed (e.g., a medical or hospital bed, a conventional bed, a wheelchair, a seat or other seating assembly, etc.) includes an enclosure defining at least one interior chamber and having substantially fluid impermeable upper and lower layers; wherein the upper layer include a plurality of openings through which fluid from the at least one fluidly-distinct interior chamber can exit. The topper member further includes at least one fluid passage formed within the enclosure by selectively attaching the upper layer to the lower layer and at least two fluid zones formed within the enclosure. In some embodiments, at least one of the fluid zones is in fluid communication with the fluid passage. The topper member includes at least one non-fluid zone within the enclosure, wherein the non-fluid zone includes at least one fluid impermeable member and wherein the fluid impermeable member is configured to generally prevent fluid flow through the non-fluid zone. The topper member further includes a spacer material positioned within the enclosure of each of the fluid zones, said spacer material configured to maintain a desired separation between the upper and lower layers and to help distribute fluid within the at least one interior chamber. In one embodiment, the topper member comprises at least one fluid module having a fluid transfer device (e.g., a blower or fan), a thermoelectric device, a convective heater or other thermal conditioning device, a housing, a controller, one or more sensors and/or the like). The topper member further includes a conduit connecting an outlet of at least one fluid module in fluid communication with at least one fluid passage. In some embodiments, the fluid module selectively delivers fluid to at least one of the two fluid zones through the conduit and the passage. In some embodiments, fluids entering the fluid zones are generally distributed within the interior chamber by the spacer material before exiting through the plurality of openings along the upper layer. In some embodiments, the non-fluid zone is positioned generally between the at least two fluid zones. In one embodiment, a thickness of the topper member along the non-fluid zone is generally equal to a thickness of the topper member along portions of the topper member that comprise a spacer material. 
     According to some embodiments, the at least two fluid zones comprise a first fluid zone and a second fluid zone, wherein the first and second fluid zones are configured to receive fluid from the same fluid module. In one embodiment, the at least two fluid zones comprise a first fluid zone and a second fluid zone, wherein the first fluid zone is configured to selectively receive fluid from a first fluid module and wherein the second fluid zone is configured to selectively receive fluid from a second fluid module. In some embodiments, the upper and lower layers comprise a unitary structure. In other embodiments, the upper and lower layers are separate members that are permanently or removably attached to each other. In one embodiment, the fluid impermeable member comprises foam or another flow blocking device or member. In one embodiment, the fluid module comprises a thermoelectric device configured to selectively heat or cool fluid being delivered to the topper member. In some embodiments, the topper member further includes one or more moisture sensors configured to detect a presence of liquid on or within the topper member. In some embodiments, the topper member comprises one or more other types of sensors (e.g., temperature sensor, pressure sensor, humidity sensor, occupant detection sensor, noise sensor, etc.), either in addition to or in lieu of a moisture sensor. In some embodiments, the topper member further includes at least one fluid distribution member positioned on top of the upper layer, wherein the fluid distribution member is configured to help distribute fluid flow exiting the plurality of openings of the upper layer and/or to improve the comfort level of an occupant situated on top of the topper member. In one embodiment, the first fluid zone is configured to receive fluid having a first temperature, and the second fluid zone is configured to receive fluid having a second temperature, wherein the first temperature is greater than the second temperature. 
     According to some embodiments, a conditioner mat or topper member for use with a bed assembly (e.g., hospital or medical bed, conventional bed, other type of bed, other seating assembly, etc.) comprises an upper layer having a plurality of openings and a lower layer. In some embodiments, the upper layer and/or the lower layer are substantially or partially fluid impermeable. The mat or topper member additionally includes at least one interior chamber defined between the upper layer and the lower layer and at least one spacer material positioned within the at least one interior chamber. In some embodiments, the spacer material (e.g., spacer fabric, honeycomb or other air permeable structure, at least partially air permeable foam member, etc.) is configured to maintain a shape of the interior chamber(s) and to help with the passage of fluids within at least a portion of the interior chamber(s). The mat or topper member further comprises an inlet in fluid communication with one or more of the interior chambers, and one or more fluid modules. In one embodiment, the fluid module comprises a blower, fan or other fluid transfer device, a thermoelectric device (e.g., a Peltier circuit), a convective heater, other thermal conditioning devices, sensors, controller, a housing and/or the like. In some embodiments, the mat or topper member also includes a conduit that places an outlet of one or more fluid modules in fluid communication with the inlet. In some arrangements, one or more fluid modules selectively deliver fluid to at least one interior chamber through the conduit and the inlet. In some embodiments, fluid entering the interior chamber through the inlet is generally distributed within said at least one interior chamber by the at least one spacer material before exiting through the plurality of openings along the upper layer. In one embodiment, the conditioner mat is configured to releasably (e.g., using straps, hook-and-loop connections, buttons, zippers, other fasteners, etc.) or permanently secure to a top of a bed assembly. 
     According to some embodiments, the upper and lower layers comprise a plastic (e.g., vinyl), a fabric and/or any other material. In some embodiments, a fluid module comprises at least one thermoelectric device for thermally or environmentally conditioning (e.g., heating, cooling, dehumidifying, etc.) a fluid being delivered to one or more of the interior chambers. In one embodiment, a spacer material comprises spacer fabric. In some embodiments, the upper and lower layers are configured to form at least one fluid boundary, which fluidly separates a first chamber from one or more other chambers (e.g., a second chamber). In some embodiments, the fluid boundary is generally away from a periphery of the conditioner mat (e.g., toward the middle of the mat or topper member, along the sides but not at the edges, etc.). In some embodiments, the first chamber comprises a spacer material and the second chamber comprises a generally fluid impermeable member, wherein the second chamber being configured to not receive fluid from a fluid module. In certain arrangements, the generally fluid impermeable member comprises a foam pad or other member that provides a continuous feel to an occupant situated on the mat or topper member. In one embodiment, the mat or topper member additionally includes a third chamber, wherein such a third chamber includes a spacer material and is configured to receive fluid (e.g., it is a fluid zone). In one embodiment, the second chamber is generally positioned between the first and third chambers, and wherein the generally fluid impermeable member in the second chamber provides thermal insulation and/or general fluid flow blocking between the first and third chambers. In some embodiments, both the first and second chambers comprise a spacer material, and the both the first and second chambers are configured to receive fluid. In one embodiment, a first fluid module is in fluid communication with the first chamber and a second fluid module is in fluid communication with the second chamber. 
     According to some embodiments, the conditioner mat comprises a skirt portion configured to releasably secure to a mattress or other support structure of a bed like a fitted sheet. In one embodiment, at least one fluid module is at least partially contained within a fluid box, wherein such a fluid box is configured for attachment to a bed assembly (e.g., at, along or near the headboard, footboard, guiderail, etc.). In another embodiment, at least one fluid module is configured to hang along a side and below of the conditioner mat. In other embodiments, one or more fluid conduits of the mat or topper member are insulated to reduce the likelihood of thermal losses. In some embodiments, the spacer material is generally positioned in locations that are likely to be adjacent to targeted high pressure contact areas with an occupant. In some arrangements, the conditioner mat is configured to be positioned on top of a mattress, pad or other support member of a bed assembly, wherein such a mattress, pad or other support member comprises softness and structural characteristics that facilitate pressure redistribution for an occupant positioned thereon. In one embodiment, the mattress, pad or support member comprises foam, gel, fluid-filled chambers and/or any other material, component, device or feature. In some embodiments, the mat or topper member comprises at least one sensor (e.g., humidity, condensation, temperature, pressure, etc.). In some embodiments, such sensors are configured to provide a signal to a controller to regulate the operation of a fluid module and/or any other electronic device or component. In some embodiments, one or more fluid conduits are at least partially incorporated within a guard rail of a bed assembly. In some embodiments, the conditioner mat is configured to be secured on top of a medical bed, a hospital bed, another type of bed, a wheelchair and/or any other type of seating assembly. 
     According to some embodiments, a topper member for use with a medical bed includes an enclosure defining at least one fluidly-distinct interior chamber and having substantially fluid impermeable upper and lower layers. In one embodiment, the upper layer includes a plurality of openings through which fluid from the fluidly-distinct interior chamber(s) can exit. The topper member additionally includes one or more securement devices (e.g., straps, elastic bands, buttons, zippers, clip or other fasteners, etc.) for at least temporarily securing the topper member to a medical bed. The topper member further comprises one or more spacer materials positioned within the fluidly-distinct interior chamber(s), wherein such spacer materials are configured to maintain a desired separation between the upper and lower layers and to help distribute fluid within the fluidly-distinct chambers. The topper member also includes at least one fluid module comprising a fluid transfer device (e.g., a blower, fan), a thermoelectric device, convective heater or other thermal conditioning device and/or the like. In some embodiments, the topper member comprises one or more conduits that place an outlet of a fluid module in fluid communication with at least one fluidly-distinct interior chamber. In some embodiments, the fluid module selectively delivers fluids to one or more fluidly-distinct interior chambers through one or more conduits. In some embodiments, fluids entering the interior chambers are generally distributed within such chambers by using at least one spacer material (e.g., spacer fabric, lattice member, honeycomb structure, air permeable foam member, other fluid distribution device, etc.) before exiting through the plurality of openings along the upper layer of the topper member. 
     According to some embodiments, the enclosure defines a first fluidly-distinct chamber and at least a second fluidly-distinct chamber, such that the first fluidly-distinct chamber is configured to receive fluid having a first temperature from a first fluid module and the second fluidly-distinct chamber is configured to receive fluid having a second temperature from a second fluid module. In some embodiments, at least one property or characteristic of the fluid entering the first chamber is different than a corresponding property or characteristic of the fluid entering the second chamber (e.g., temperature, fluid flow rate, humidity, additives, etc.). 
     According to some embodiments, a method of preventing or reducing the likelihood of bed sores to an occupant of a bed includes providing a climate controlled topper member. In some embodiments, the topper member includes an enclosure defining at least one fluidly-distinct interior chamber and having substantially fluid impermeable upper and lower layers. In one embodiment, the upper layer includes a plurality of openings through which fluid from the fluidly-distinct interior chamber(s) can exit. The topper member further includes one or more securement devices for at least temporarily securing the topper member to a bed (e.g., a hospital or medical bed, a conventional bed, a wheelchair, other seating assembly, etc.). In some embodiments, a spacer material is positioned within a fluidly-distinct interior chamber, wherein the spacer material is configured to maintain a desired separation between the upper and lower layers and to help distribute fluid within one or more of the fluidly-distinct chambers. The topper member further comprises at least one fluid module (e.g., a fluid transfer device, a thermoelectric device, heat transfer members, controller, etc.) and a conduit placing an outlet of the fluid module in fluid communication with one or more fluidly-distinct interior chambers. In some embodiments, the fluid module selectively delivers fluids to one or more interior chambers through the conduit. In some embodiments, fluids entering the fluidly-distinct interior chambers are generally distributed within said chambers by the spacer material before exiting through the plurality of openings along the upper layer of the topper member. The method additionally includes positioning the topper member on a mattress or support pad of a bed and securing the topper member to the mattress or support pad. In some embodiments, the method comprises activating at least one fluid module to selectively transfer fluids to a bed occupant through the interior chambers. In some embodiments, the method further comprises removing the topper member from the mattress or support pad for cleaning or replacing said topper member or for any other purpose. In one embodiment, cleaning the topper member comprises cleaning exterior surfaces of the upper and lower layers (e.g., wiping it down with a cleansing solution or member). 
     According to certain arrangements, a conditioner mat for use with a bed assembly includes an upper layer comprising a plurality of openings, a lower layer being substantially fluid impermeable, at least one interior chamber defined by the upper layer and the lower layer and a spacer material positioned within the interior chamber. In one embodiment, the spacer material is configured to maintain a shape of the interior chamber and to help with the passage of fluids within a portion of interior chamber. The conditioner mat additionally includes an inlet in fluid communication with the interior chamber, at least one fluid module comprising a fluid transfer device and a conduit placing an outlet of the at least one fluid module in fluid communication with the inlet. In some arrangements, the fluid module selectively delivers fluids to the interior chamber through the conduit and the inlet. In one embodiment, fluids entering the chamber through the inlet are generally distributed within the chamber by the spacer material before exiting through the plurality of openings along the upper layer. The conditioner mat can be configured to releasably secure to a top of a bed assembly. 
     According to some arrangements, the upper and lower layers comprise a plastic (e.g., vinyl), fabric (e.g., tight-woven fabric, a sheet, etc.) and/or the like. In one embodiment, the fluid module comprises at least one thermoelectric device for thermally conditioning a fluid being delivered to the chamber. In other arrangements, the spacer material comprises spacer fabric, open-cell foam, other porous foam or material and/or the like. In certain embodiments, the upper and lower layers are configured to form at least one fluid boundary that generally separates a first chamber from a second chamber. In some arrangements, the first chamber comprises a spacer material and the second chamber comprises a generally fluid impermeable member (e.g., foam pad), such that the second chamber is configured to not receive fluid from a fluid module. In other arrangements, the mat additionally includes a third chamber, such that the second chamber is generally positioned between the first and third chambers. The generally fluid impermeable member in the second chamber provides thermal insulation between the first and third chambers. 
     According to certain embodiments, both the first and second chambers comprise a spacer material, wherein both the first and second chambers are configured to receive fluid, and wherein the upper layer in each of the first and second chambers comprises a plurality of openings. In other arrangements, a system includes a first fluid module and at least a second fluid module, such that the first fluid module is in fluid communication with the first chamber and the second fluid module is in fluid communication with the second chamber. In one embodiment, the conditioner mat comprises a skirt portion configured to releasably secure to a mattress or other support structure of a bed like a fitted sheet. In other arrangements, the fluid module is at least partially contained within a fluid box, which is configured for attachment to a bed assembly. In one embodiment, the fluid module is configured to hang along a side of the conditioner mat. In another arrangement, the conduit is insulated to reduce the likelihood of thermal losses. 
     According to certain arrangements, the spacer material is generally positioned in locations that are likely to be adjacent to targeted high pressure contact areas with an occupant. In one embodiment, the conditioner mat is configured to be positioned on top of a mattress or support pad of a bed assembly. The mattress or support pad includes softness and structural characteristics that facilitate pressure redistribution for an occupant positioned thereon. In other arrangements, the mattress or support pad comprises a foam, a gel or a plurality of fluid-filled chambers. In one embodiment, the conduit is at least partially incorporated within a guard rail of a bed assembly. In another arrangement, the conditioner mat is configured to be secured on top of a medical bed. 
     According to certain arrangements, a topper member for use with a medical bed includes an enclosure defining at least one fluidly-distinct interior chamber and having substantially fluid impermeable upper and lower layers. The upper layer includes a plurality of openings through which fluid from the one fluidly-distinct interior chamber can exit. The topper member additionally includes at least one securement device for at least temporarily securing the topper member to a medical bed, a spacer material positioned the fluidly-distinct interior chamber, such that the spacer material is configured to maintain a desired separation between the upper and lower layers and to help distribute fluid within the fluidly-distinct chamber, at least one fluid module comprising a fluid transfer device and a conduit placing an outlet of the fluid module in fluid communication with the fluidly-distinct interior chamber. In one arrangement, the fluid module selectively delivers fluids to the fluidly-distinct interior chamber through the conduit. In another arrangement, fluids entering the at least one fluidly-distinct interior chamber are generally distributed within the chamber by the spacer material before exiting through the plurality of openings along the upper layer. In one embodiment, the enclosure defines a first fluidly-distinct chamber and at least a second fluidly-distinct chamber, wherein the first fluidly-distinct chamber is configured to receive fluid having a first temperature from a first fluid module, and wherein the second fluidly-distinct chamber configured to receive fluid having a second temperature from a second fluid module. The first temperature is greater than the second temperature. 
     According to certain arrangements, a method of preventing bed sores to an occupant of a bed includes providing a topper member. The topper member comprises an enclosure defining at least one fluidly-distinct interior chamber and having substantially fluid impermeable upper and lower layers. The upper layer comprising a plurality of openings through which fluid from the fluidly-distinct interior chamber can exit. The topper member additionally includes at least one securement device for at least temporarily securing the topper member to a bed, a spacer material positioned within the fluidly-distinct interior chamber, wherein the spacer material is configured to maintain a desired separation between the upper and lower layers and to help distribute fluid within the at least one fluidly-distinct chamber, at least one fluid module comprising a fluid transfer device and a conduit placing an outlet of the fluid module in fluid communication with the fluidly-distinct interior chamber. In some arrangements, the fluid module selectively delivers fluids to the fluidly-distinct interior chamber through the conduit. In another embodiment, fluids entering the fluidly-distinct interior chamber are generally distributed within the chamber by the spacer material before exiting through the plurality of openings along the upper layer. The method additionally includes positioning the topper member on a mattress of a bed, securing the topper member to the mattress and activating the fluid module to selectively transfer fluids to a bed occupant through the fluidly-distinct interior chamber. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other features, aspects and advantages of the present inventions are described with reference to drawings of certain preferred embodiments, which are intended to illustrate, but not to limit, the present inventions. It is to be understood that the attached drawings are provided for the purpose of illustrating concepts of the present inventions and may not be to scale. 
         FIG.  1    illustrates an exploded perspective view of one embodiment of a conditioner mat or topper member configured for placement on a bed assembly; 
         FIG.  2    illustrates a perspective view of a conditioner mat or topper member according to one embodiment; 
         FIG.  3 A  illustrates a partial cross-sectional view of a conditioner mat or topper member according to one embodiment; 
         FIG.  3 B  illustrates another partial cross-sectional view of a conditioner mat or topper member according to one embodiment; 
         FIG.  3 C  illustrates yet another partial cross-sectional view of a conditioner mat or topper member according to one embodiment; 
         FIGS.  4  and  5    schematically illustrate plan views of a conditioner mat or topper member according to one embodiment; 
         FIG.  6    illustrates a partial bottom view of one embodiment of a conditioner mat or topper member secured to a mattress, pad or other support member of a bed assembly; 
         FIG.  7    illustrates a perspective view of a conditioner mat or topper member secured to a bed mattress or other support structure according to another embodiment; 
         FIG.  8    illustrates a perspective view of a conditioner mat or topper member according to one embodiment; 
         FIG.  9    illustrates a perspective view of a conditioner mat or topper member according to another embodiment; 
         FIG.  10 A  illustrates a perspective view of a conditioner mat or topper member according to one embodiment; 
         FIG.  10 B  illustrates a partial perspective view of the conditioner mat or topper member of  FIG.  10 A ; 
         FIG.  11 A  illustrates a perspective view of a conditioner mat or topper member according to one embodiment; 
         FIG.  11 B  illustrates a partial perspective view of the conditioner mat or topper member of  FIG.  11 A ; 
         FIG.  12 A  illustrates a perspective view of a conditioner mat or topper member according to one embodiment; 
         FIG.  12 B  illustrates a partial perspective view of the conditioner mat or topper member of  FIG.  12 A ; 
         FIG.  13 A  illustrates a perspective view of a conditioner mat or topper member according to one embodiment; 
         FIG.  13 B  illustrates a partial perspective view of the conditioner mat or topper member of  FIG.  13 A ; 
         FIG.  14    illustrates a perspective view of a conditioner mat or topper member according to another embodiment; 
         FIG.  15    schematically illustrates possible positions for a fluid module relative to a conditioner mat or topper according to one embodiment; 
         FIG.  16 A  illustrates a top view of a conditioner mat or topper member according to another embodiment; 
         FIG.  16 B  illustrates a perspective view of one embodiment of a conditioner mat or topper member positioned on a mattress or other support structure of a bed; 
         FIG.  16 C  illustrates a perspective view of another embodiment of a conditioner mat or topper member positioned on a mattress or other support structure of a bed; 
         FIG.  16 D  illustrates a perspective view of yet another embodiment of a conditioner mat or topper member positioned on a mattress or other support structure of a bed; 
         FIG.  17 A  illustrates a perspective view of one embodiment of a conditioner mat or topper member positioned on a medical bed; 
         FIG.  17 B  illustrates a partial cross-sectional view of the conditioner mat and medical bed of  FIG.  17 A ; 
         FIGS.  17 C and  17 D  illustrate perspective views of another embodiment of a conditioner mat or topper member positioned on a medical bed; 
         FIGS.  18 A and  18 B  illustrate different perspective views of a conditioner mat or topper member according to one embodiment; 
         FIG.  18 C  illustrates a cross-sectional view of the conditioner mat of  FIGS.  18 A and  18 B ; 
         FIG.  18 D  illustrates another perspective view of the conditioner mat of  FIGS.  18 A- 18 C ; 
         FIG.  18 E  illustrates another cross-sectional view of the conditioner mat of  FIGS.  18 A- 18 D ; 
         FIG.  19 A  illustrates a perspective view of a fluid box according to one embodiment; 
         FIGS.  19 B and  20    illustrate front views of an interior of the fluid box of  FIG.  19 A ; 
         FIG.  21    illustrates various embodiments of outlet fittings; 
         FIG.  22    illustrates a perspective view of a fluid box according to another embodiment; 
         FIG.  23 A  illustrates a front view of the fluid box of  FIG.  22   ; 
         FIG.  23 B  illustrates a front view of the interior of the box of  FIGS.  22  and  23 A ; 
         FIG.  24    schematically illustrates fluid diagram within a fluid box comprising two fluid modules, in accordance with one embodiment; 
         FIG.  25    illustrates a plan view of an insulated conduit in fluid communication with a conditioner mat or topper member according to one embodiment; 
         FIG.  26    illustrates a plan view of a conduit system in fluid communication with a conditioner mat or topper member according to another embodiment; 
         FIG.  27    illustrates a plan view of the interface of a fluid inlet and a conditioner mat or topper member according to one embodiment; and 
         FIGS.  28 A- 28 C  illustrates flow diagrams representing various methods of balancing airflow into the various fluid zones of a conditioner mat or topper member, in accordance with one embodiment. 
         FIGS.  29 A and  29 B  illustrate different perspective views of a conditioner mat or topper member according to another embodiment; 
         FIG.  30    illustrates a perspective view of a spacer material or other fluid distribution member configured for use within a conditioner mat or topper member according to one embodiment; 
         FIG.  31    illustrates a perspective view of a fluid nozzle or other inlet of a conditioner mat or topper member according to one embodiment; 
         FIG.  32    illustrates a perspective view of a fluid nozzle or other inlet of a conditioner mat or topper member according to another embodiment; 
         FIG.  33    illustrates a cross-sectional view of the fluid nozzle of  FIG.  32   ; 
       and 
         FIG.  34    schematically illustrates one embodiment of a control scheme for the operation of a climate controlled topper member. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     This application is generally directed to climate control systems for beds or other seating assemblies. More specifically, in certain arrangements, the present application discloses climate controlled fluid conditioner members or topper members that are configured to be selectively positioned on top of hospital beds, medical beds, other types of beds and/or other seating assemblies (e.g., chairs, wheelchairs, other seats, etc.). Thus, the topper members or conditioner mats and the various systems and features associated with them are described herein in the context of a bed assembly (e.g., medical bed) because they have particular utility in this context. However, the devices, systems and methods described herein, can be used in other contexts as well, such as, for example, but without limitation, seat assemblies for automobiles, trains, planes, motorcycles, buses, other types of vehicles, wheelchairs, other types of medical chairs, beds and seating assemblies, sofas, task chairs, office chairs, other types of chairs and/or the like. 
     One embodiment of a conditioner mat  20  or topper member adapted to be attached to or otherwise positioned on top of a medical bed  8  is illustrated in  FIG.  1   . As shown, the mat  20  can be positioned on a mattress, pad, cushion or other support member  10  of a bed  8 . According to certain embodiments, the mattress  10  or other support member comprises foam, viscoelastic, air chambers, gel, springs and/or any other resilient materials to give it a desired or required feel. For example, the firmness, pliability and other physical characteristics of the mattress or other support member can be selected so as to enhance pressure redistribution when an occupant is positioned thereon. As discussed in greater detail herein, this can assist in preventing decubitus ulcers for bed occupants. 
     As discussed in greater detail herein, the conditioner mat  20  can be releasably secured to a mattress  10  or other portion of a bed using one or more attachment methods or devices. For example, as illustrated in  FIG.  6   , the mat  20  can comprise a peripheral skirt that is configured to fit around a portion of the mattress (e.g., like a fitted sheet, other encapsulating member, etc.). The skirt can include one or more elasticized portions or members to facilitate its securement to and/or removal from the mattress. Such a design can also provide a more secure connection between the mat  20  and the mattress, pad, cushion or other support member  10 . In other arrangements, the position of the separate topper member  20  is maintained relative to the mattress  10  using one or more straps ( FIG.  7   ), zippers, hook-and-loop type fasteners, buttons, snap connections, friction surfaces and/or the like, as desired or required. In one embodiment, the straps  21 ′ are elastic or otherwise expandable. Alternatively, the topper or mat  20  can be permanently attached to a support member  10  (e.g., mattress, pad, cushion, etc.) or other portion of a bed  8 . 
     With continued reference to  FIG.  1   , one or more portions of the conditioner mat  20  can be selectively supplied with ambient and/or thermally-conditioned (e.g., heated, cooled, etc.) air or other fluid. According to certain arrangements, such fluids are generated by one or more fluid modules located within a separate fluid box  60 . A fluid module can include a blower, fan or other fluid transfer device. In certain embodiments, the fluid module can additionally include a thermoelectric device (e.g., Peltier circuit), a convective heater, other types of heating or cooling devices, dehumidifier and/or any other environmentally conditioning device. A fluid module can also include one or more of the following, as desired or required: fluid transfer members (e.g., fins), a sensor (e.g., temperature, humidity, condensation, etc.), a controller and the like. 
     As illustrated in  FIG.  1   , fluid exiting a fluid module, which in some embodiments is housed within a fluid box  60  or other enclosure, can be advantageously routed to the mat or topper member  20  using one or more ducts or other fluid conduits  72 ,  74 . The ducts can include one or more flexible, semi-rigid and/or rigid materials, such as, for example, plastic, rubber and the like. In some embodiments, such ducts or conduits are at least partially insulated to prevent or reduce the likelihood of thermal losses between the fluid module and the topper member  20 . As discussed in greater detail herein, a fluid module that supplies air or other fluid to a conditioner mat  20  need not be positioned within a separate box  60 . For instance, a fluid module can be incorporated within, adjacent to or near a main portion of the topper member. Alternatively, a fluid module can be configured to hang off one or more edges of the topper member and/or the like. Additional disclosure regarding fluid modules is provided in U.S. patent application Ser. No. 11/047,077, filed Jan. 31, 2005 and issued on Sep. 15, 2009 as U.S. Pat. No. 7,587,901, the entirety of which is hereby incorporated herein. 
     Regardless of the exact configuration of the topper member and fluid modules that are in fluid communication with it, the topper member  20  can include one or more fluid zones  34 ,  36 ,  44 ,  46  into which thermally-conditioned or ambient air can be selectively delivered. For example, the conditioner mat  20  illustrated in  FIGS.  1  and  2    comprises a total of four climate control zones  34 ,  36 ,  44 ,  46 . The mat  20  can be designed so that two or more zones are in fluid communication with one another. Consequently, air or other fluid having a first type of ventilation or thermal conditioning properties can be provided to certain portions of the mat  20 , while air or fluid having a second type of ventilation or thermal conditioning properties can be provided to other portions of the mat, as desired or required. For example, one set of fluid zones  34 ,  36  can be supplied with relatively cool air, while another set of fluid zones  44 ,  46  can be supplied with relative warm air, or vice versa. 
     In other arrangements, a mat or topper member  20  can include additional or fewer fluid zones, as desired or required. For instance, the mat  20  can include only a single conditioning zone (e.g., extending, at least partially, across some or most of the mat&#39;s surface area) such as the arrangement illustrated in  FIG.  8   . In certain embodiments, two or more zones of the topper member or mat  20  are fluidly isolated from each other. Thus, air or other fluid entering one zone (or one set of zones) can be kept substantially separate and distinct from air or fluid entering another zone (or another set of zones). This can help ensure that fluid streams having varying properties and other characteristics (e.g., type or composition of fluid, temperature, relative humidity level, flowrate, etc.) can be delivered to targeted portions of a conditioner mat  20  in a desired manner. 
     According to certain embodiments, as discussed in greater detail herein, air or other fluid delivered into a zone  34 ,  36 ,  44 ,  46  exits through one or more openings  24  (e.g., holes, apertures, slits, etc.) located along an upper layer or other upper surface of the mat  20 . Thus, ambient and/or environmentally-conditioned (e.g., cooled, heated, dehumidified, etc.) air can be advantageously directed to targeted portions of an occupant&#39;s body. For example, in the topper member  20  illustrated in  FIGS.  1  and  2   , the zones  34 ,  36 ,  44 ,  46  are arranged in a manner to generally target an occupant&#39;s head (zone  34 ), shoulders (zone  44 ), ischial region (zone  36 ) and heels (zone  46 ). However, a conditioner mat  20  in accordance with any of the embodiments disclosed herein can be modified to include more or fewer zones to target these and/or other body portions of an occupant. 
     In certain embodiments, the fluid zones  34 ,  36 ,  44 ,  46  of a conditioner mat or topper member  20  are strategically positioned to target portions of the anatomy that are susceptible to decubitus ulcers, other ailments, general discomfort and/or other problems resulting from prolonged contact with a bed surface. As noted above, reducing the temperature and/or moisture levels in such susceptible anatomical regions can help prevent (or reduce the likelihood of) bed sores and help improve the comfort level of an occupant. For example, with respect to the hospital or medical bed  8  illustrated in  FIGS.  1  and  2   , the fluid zones  34 ,  36 ,  44 ,  46  can be arranged so that ambient and/or conditioned (e.g., heated, cooled, dehumidified, etc.) air or other fluids are selectively delivered through the topper member  20  toward an occupant&#39;s back of the head, shoulders, upper back, elbows, lower back, hips, heels and/or any other target anatomical region. 
     With continued reference to  FIG.  2   , air or other fluid can be directed from the fluid module(s) (e.g., stand-alone unit(s), unit(s) located within a fluid box  60 , etc.) to the conditioner mat  20  through one or more ducts  72 ,  74 . The ducts  72 ,  74  can include standard or non-standard conduits. For instance, a duct can include flexible 1-inch diameter rubber tubing having a generally circular cross-section. However, the materials of constructions, cross-sectional size or shape, flexibility or rigidity and other details regarding the ducts  72 ,  74  or other fluid conduits can vary, as desired or required. 
     In addition, according to certain arrangements, fluid is supplied to the conditioner mat  20  from both the left and right sides of the bed  8 . However, the number, location and other details regarding the fluid inlets into the mat  20  can vary, as desired or required. In  FIG.  2   , the fluid box  60  is secured to or near the headboard of the bed assembly  8 . However, as discussed in greater detail herein, the fluid box  60  can be positioned at any other location relative to the bed, such as, for example, along the footboard, one of the sides and/or the like. Positioning the fluid modules away from the occupant head, regardless of whether or not the fluid modules are included within a fluid box  60 , can reduce the noise levels perceived by the occupant. Additional details regarding the fluid modules and the ducts are provided herein. 
     According to certain arrangements, one or more fittings  76 ,  78  are situated at the interface of the topper member  20  and a fluid conduit  72 ,  74 . As discussed in greater detail herein, such fittings  76 ,  78  can advantageously facilitate the connection of the conduits  72 ,  74  to (and/or disconnection from) the mat or topper member  20 . This can be beneficial whenever there is a need or desire to remove the mat  20  from the adjacent mattress, pad, cushion or other support member  10  for cleaning, servicing, replacement and/or any other purpose. The fittings  76 ,  78  can also help reduce the likelihood that fluids inadvertently leak prior to their delivery into an interior space (e.g., passages  32 ,  42 , zones  34 ,  36 ,  44 ,  46 , etc.) of the mat  20 . 
     As illustrated in  FIG.  3 A , the mat  20  can include an upper layer  22  and a lower layer  26  that together generally define a space S therebetween. According to certain arrangements, the upper and lower layers  22 ,  26  comprise one or more fluid impermeable or substantially fluid impermeable materials and/or conductive materials, such as, for example, vinyl, other plastics, fabric and/or the like. In order to allow air or other fluids to exit the interior space S (e.g., in the direction of a bed occupant), the upper layer  22  can include a plurality of openings  24  (e.g., holes, orifices, etc.) along its upper layer  22 . The quantity, shape, size, spacing, orientation, location and other details of the openings  24  can be varied to achieve a desired or required airflow scheme along the top of the mat or topper member  20  during use. 
     In other arrangements, the upper layer  22  and/or the lower layer  26  of the mat conditioner mat  20  comprise a generally fluid impermeable lining, coating or other member along at least a portion (e.g., some or all) of its surface area in order to provide the mat with the desired air permeability or conductive characteristics or properties. Alternatively, one or more portions of the mat&#39;s upper surface (e.g., upper layer  22 ) can be at least partially fluid permeable. Thus, air or other fluids delivered within an interior space S of a topper member  20  may diffuse through such air permeable portions, toward a bed occupant. 
     According to certain configurations, as illustrated, for example, in  FIG.  3 A , one or more fluid distribution members  28  or spacer materials can be positioned within an interior space S of the conditioner mat  20 . Such fluid distribution members can provide desired structural characteristics to the mat  20  so that the integrity of the space S is sufficiently maintained during use. In addition, the fluid distribution member  28  or spacer material can help distribute air or other fluids within the interior space S. Consequently, air or other fluids delivered to the conditioner mat or topper member  20  can be advantageously distributed within the interior spaces S of the various zones. This can help ensure that ambient and/or conditioned (e.g., cooled, heated, dehumidified, etc.) fluids are properly delivered through the openings  24  along the top surface of the mat  20 . 
     With continued reference to  FIG.  3 A , the conditioner mat  20  can be shaped, sized and generally configured to receive a fluid distribution member  28  within the interior space (e.g., generally between the upper and lower layers  22 ,  26 ). As noted above, the fluid distribution member  28  can include one or more spacer materials that are adapted to generally maintain their shape when subjected to compressive forces and other loads (e.g., from an occupant seated thereon or thereagainst). For example, in some embodiments, the fluid distribution member  28  comprises a spacer fabric, open cell or other porous foam, a mesh, honeycomb or other porous structure, other materials that are generally air permeable and/or conductive or that have an open structure through which fluids may pass and/or the like. Such spacer fabrics or other spacer materials can be configured to maintain a minimum clearance between the upper and lower layers  22 ,  26  so that air or other fluid entering the mat  20  can be at least partially distributed within the interior space S before exiting the openings  24 . As discussed in greater detail herein, in certain arrangements, the mat or topper member  20  is configured to be selectively removed from the interior space S for replacement, cleaning, repair or for any other purpose. 
     In some embodiments, the mat or topper member comprises a spacer fabric that is configured to generally retain its three-dimensional shape when subjected to compressive and/or other types of forces. The spacer fabric can advantageously include internal pores or passages that permit air or other fluid to pass therethrough. For example, the spacer fabric can comprise an internal lattice or other structure which has internal openings at least partially extending from the top surface to the bottom surface of the spacer fabric. In some embodiments, the thickness of the spacer fabric or other fluid distribution member is approximately 6-14 mm (e.g., about 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, values between such ranges, etc.). In other arrangements, the thickness of the spacer fabric or other fluid distribution member of the mat is less than approximately 6 mm (e.g., about 5 mm, 4 mm, 3 mm, 2 mm, 1 mm, less than 1 mm, values between such ranges, etc.) or greater than approximately 14 mm (e.g., about 15 mm, 16 mm, 18 mm, 20 mm, 24 mm, 28 mm, 36 mm, greater than 36 mm, values between such ranges, etc.). The spacer fabric or other fluid distribution member can be manufactured from one or more durable materials, such as, for example, foam, plastic, other polymeric materials, composites, ceramic, rubber and/or the like. The rigidity, elasticity, strength and/or other properties of the spacer fabric can be selectively modified to achieve a target spacing within an interior of the mat or topper member, a desired balance between comfort and durability and/or the like. In some embodiments, the spacer fabric can comprise woven textile, nylon mesh material, reticulated foam, open-cell foam and/or the like. The spacer fabric can be advantageously breathable, resistant to crush and air permeable. However, in other embodiments, a spacer fabric can be customized to suit a particular application. Therefore, the breathability, air permeability and/or crush resistance of a spacer fabric can vary. 
       FIG.  3 B  illustrates a partial cross-sectional view of one embodiment of a conditioner mat  20  which includes a boundary or node N across or through which air or other fluid is generally not permitted to pass. In the illustrated arrangement, the mat comprises fluid impermeable or substantially fluid impermeable upper and lower layers  22 ,  26  (e.g., vinyl or other thermoplastic sheet, tight-woven fabric, etc.) that define a first interior space S 1 . As shown in  FIG.  3 B  and noted above with reference to  FIG.  3 A , the mat or topper member  20  can be sized, shaped and generally configured to removably or permanently receive a fluid distribution member  28  within such a first interior space S 1 . 
     In certain configurations, the upper and lower layers  22 ,  26  are formed from a unitary sheet or member of plastic, fabric and/or other material that has been wrapped around an edge  25  to form a bag-like structure. Alternatively, as illustrated in  FIG.  3 C , an edge  25 ′ of the mat  20  can be formed by attaching the free ends of the layers  22 ,  26  to each other, using one or more connection methods or devices, such as, for example, hot melting, stitching, glues or other adhesives, crimping, clips or other fasteners and/or the like. 
     With continued reference to  FIG.  3 B , the conditioner mat  20  can include one or more intermediate fluid boundaries or nodes N that act to block or substantially block air flow. Such nodes N can help maintain air or other fluids within certain desired portions or zones of the mat  20 . For example, in the arrangement of  FIG.  3 B , the fluid boundary or node N helps to generally prevent air from passing from the first interior space S 1  to the second interior space S 2  located immediately adjacent to it. Alternatively, in other arrangements, the second interior space S 2  also comprises a fluid distribution member (not shown in  FIG.  3 B ) that is, at least partially, thermally and/or fluidly isolated from the fluid distribution member  28 . Under certain circumstances, the mat or topper member  20  comprises one or more interior spaces that are configured to not receive fluids, and thus, to not distribute fluids through the upper layer  22  defining their upper surface. For example, such non-fluid zones can be located along bodily portions of the occupant that are less susceptible to ulcer-formation, other ailments, discomfort and/or other undesirable conditions resulting from prolonged contact with a bed surface. 
     Relatedly, a mat  20  can include one or more non-fluid zones  50 ,  52  ( FIGS.  1  and  2   ) where air flow to an occupant is undesirable, unnecessary or otherwise unwanted. In other arrangements, non-fluid zones  50 ,  52  can provide one or more other functions or benefits. For example, a non-fluid zone can help reduce manufacturing costs, as the cost of relatively expensive spacer fabric and/or other spacer materials is reduced. Further, the use of non-fluid zones  50 ,  52  can provide an additional level of thermal isolation and/or fluid isolation, with respect to adjacent fluid zones  34 ,  36 ,  44 ,  46 . As discussed in greater detail herein, a pad, cushion, gel or similar member comprising foam (e.g., closed-cell, open-cell, viscoelastic, etc.), rubber, fabric, natural or synthetic filler material and/or any other material or substance can be positioned within the second interior space S 2 . The pad or other member positioned within a non-fluid zone can be air-permeable or non-air permeable, as desired or required. In addition, in some embodiments, the pad or other member or material that is positioned within a non-fluid zone  50 ,  52  is selected so that the overall firmness, flexibility and/or other characteristics of the non-fluid zones  50 ,  52  match or substantially match the corresponding properties of one or more adjacent fluid zones. 
     For any of the embodiments of a conditioner mat or topper member disclosed herein, the mat can have a generally flexible configuration in order to help it conform to the shape of the mattress, pad, cushion or other support member of the bed on which it may be placed. Moreover, a mat or topper member can be designed with certain immersion and envelopment characteristics in mind to assist with pressure redistribution. Such characteristics can further enhance a topper member&#39;s ability to help prevent or reduce the likelihood of pressure ulcers, other ailments, general discomfort and/or other undesirable conditions to an occupant positioned thereon. 
     To further improve the immersion and envelopment characteristics of any of the embodiments of a conditioner mat or topper member disclosed herein, or equivalents thereof, one or more additional layers, cushions or other comfort members can be selectively positioned beneath the mat (e.g., between the mat and the mattress or other support structure of a bed). Such additional layers and/or other members can further enhance the ability of the mat and adjacent surfaces to generally conform to an occupant&#39;s anatomy and body contours and shape. 
     As illustrated in  FIGS.  1  and  2   , the conditioner mat  20  can include one or more main passages  32 ,  42  that receive ambient or thermally conditioned air from the fluid modules (e.g., the inlet fittings  76 ,  78 ) and distribute it to one or more fluid zones  34 ,  36 ,  44 ,  46 . In the depicted embodiment, the mat  20  includes two main passages  32 ,  42  that extend longitudinally along opposite sides of the mat  20  (e.g., at or near what would be the edge of the bed&#39;s mattress or other upper support structure). As discussed in greater detail herein, the passages  32 ,  42  can be configured to direct air or other fluid to different zones  34 ,  36 ,  44 ,  46  of the mat or topper member  20 . A mat  20  can include more or fewer passages  32 ,  42 , as desired or required for a particular design or application. The size, shape, location, spacing, orientation, general configuration and/or other details regarding the passages  32 ,  42  can also be modified. 
     The passages  32 ,  42  can comprise upper and lower layers of plastic, fabric or other material, as discussed herein with reference to  FIGS.  3 A- 3 C . In some embodiments, the upper and lower layers that define the passages  32 ,  42  are the same layers that also define the interior spaces of the fluid zones and/or the non-fluid zones. In such designs, the conditioner mat can include one or more fluid boundaries (e.g., nodes) which help to direct air or other fluids toward specific portions of the mat interior. Such a fluid boundary can include a continuous or substantially continuous line that strategically extends along one or more portions of the mat or topper member (e.g., to define passages  32 ,  42 , fluid zones  34 ,  36 ,  44 ,  46 , non-fluid zones  50 ,  52  and/or the like). As discussed herein with reference to  FIGS.  3 B and  3 C , such fluid boundaries can be established by joining the upper and lower layers  22 ,  26  of the mat  20  to each other, using, for example, hot melting, stitching, adhesives and/or the like. In other embodiments, as depicted in  FIG.  3 B , a fluid boundary is created by wrapping a layer around an edge (e.g., bag-like design). As with the fluid zones, one or more spacer materials (e.g., spacer fabric, open cell foam, other porous foam, honeycomb or other porous structure, etc.) can be positioned within the passages  32 ,  42  to help ensure that the integrity of the passages (e.g., the passage height) is maintained during use. Fluid flow within the passages  32 ,  42  can be controlled by creating one or more boundary lines (e.g., nodes that extend across a portion of the mat). 
     With continued reference to the conditioner mat  20  of  FIGS.  1  and  2   , a first passage  32  is configured to receive fluid (e.g., ambient or conditioned air) from one or more conduits  72  and deliver it to two zones  34 ,  36 , each of which is located along a different region of the mat  20 . Likewise, a second passage  42  is configured to receive fluid from one or more conduits and deliver it to two other zones  44 ,  46 . Thus, the conditioning (e.g., cooling, heating, ventilation, etc.) for each set of zones  34 ,  36  or  44 ,  46  can be advantageously controlled separately. For example, in one embodiment, relatively cool air is directed to zones  34 ,  36  (e.g., intended to target a bed occupant&#39;s head, shoulders, hips, ischial region, lower back, etc.), while relatively warm air is directed to zones  44 ,  46  (e.g., intended to target a bed occupant&#39;s main torso and feet), or vice versa. In other arrangements, both sets of zones  34 ,  36  and  44 ,  46  are subjected to the same or similar type of ventilation or conditioning (e.g., heating, cooling, dehumidification, etc.). Further, the rate of fluid flow into each fluid zone (or set of fluid zones) can be separately adjusted in order to achieve a desired or required effect along the top surface of the mat or topper member  20 . For instance, the rate of fluid flow into (and thus, out of the corresponding openings  24 ) of the first set of zones  34 ,  36  can be greater or less than the fluid flow into the second set of zones  44 ,  46 . Alternatively, each passage  72 ,  74  can be configured to selectively delivery air or other fluid to fewer (e.g., one) or more (e.g., three, four, more than four) zones, as desired or required. 
     As discussed in greater detail herein, a conditioner mat or topper member  20  can include one or more generally air-impermeable portions or non-fluid zones  50 ,  52  which can assist in establishing physical and/or thermal boundaries. Further, such non-fluid zones  50 ,  52  can be used to help to create a substantially even and continuous thickness and/or indentation force along the mat  20 , especially in regions that do not include a spacer material (e.g., the areas located between adjacent climate controlled zones). Thus, such non-fluid zones can help maintain a generally continuous thickness and feel to the mat or topper member. This can help improve an occupant&#39;s comfort level. In addition, the incorporation of non-fluid zones into a mat or topper member design can help reduce manufacturing costs, as the spacer materials that are typically positioned within the fluid zones materials tend to be relatively expensive. 
     A plan view of one embodiment of a conditioner mat or topper member  20 A is schematically illustrated in  FIG.  4   . As in the arrangement of  FIGS.  1  and  2   , the depicted mat  20 A comprises two passages  32 ,  42  which are generally located along opposite edges of the mat  20 A and which extend, at least partially, in the longitudinal direction of the mat. In other embodiments, however, a mat or topper member can include fewer or more passages, which may be positioned along or near different portions of the mat (e.g., near the edges, away from edges, near the middle, etc.). Arrows included in  FIG.  4    illustrate the general direction of fluid flow through the passages  32 ,  42  and into (and/or out of) the respective fluid zones  34 ,  36 ,  44 ,  46 . For example, ambient and/or conditioned (e.g., cooled, heated, dehumidified, etc.) air or other fluid entering a first passage  32  is generally directed to zones  34  and  36 , whereas air or other fluid entering a second passage  42  is generally directed to zones  44  and  46 . As noted above, such a configuration can allow air to be distributed to and within certain target regions or areas of the conditioner mat  20 A, and thus, the bed (e.g., hospital bed, medical bed, other bed or seating assembly, etc.) on which the mat is positioned. The ability to deliver ambient and/or conditioned (e.g., cooled, heated, etc.) air can help provide one or more benefits to a bed&#39;s occupant. For example, as discussed in greater detail herein, such a scheme can help reduce the likelihood of bed sores resulting from heat, friction, moisture, prolonged contact and/or other factors. In addition, such embodiments can improve the general comfort level of the occupant, especially in difficult environmental conditions (e.g., extreme heat or cold, excessively high relative humidity levels, etc.). 
     With continued reference to  FIG.  4   , the mat is designed such that adjacent fluid zones (e.g., zones  34  and  44 , zones  44  and  36 , zones  36  and  46 , etc.) are not in fluid communication with the same main passage  32 ,  42 . In addition, as shown in  FIG.  4   , adjacent zones are generally separated by one or more air-impermeable or substantially air-impermeable zones  50 . In certain embodiments, interior spaces of one or more non-fluid zones  50  comprise foam (e.g., closed-cell, open-cell, viscoelastic, etc.), one or more natural or synthetic filler materials or some other generally air-impermeable pad or material. 
       FIG.  5    schematically illustrates another embodiment of a conditioner mat  20 B that comprises two main passages  32 ,  42 . A conditioner mat can include additional non-fluid zones  52 , which in the illustrated arrangement, are oriented along one edge of a zone and perpendicularly extend between the main non-fluid zones  50 . As discussed herein, the various generally air-impermeable zones (e.g., non-fluid zones)  50 ,  52  included within a conditioner mat can help create thermal and/or fluid barriers between adjacent climate controlled zones  34 ,  36 ,  44 ,  46  (e.g., fluid zones). Accordingly, the function of the conditioner mat can be improved, as the specific zones can operate closer to a target cooling, heating, ventilation or other environmentally-controlled effect. 
     According to certain arrangements, a conditioner mat, such as any of those disclosed herein, can be approximately 3 feet wide by 7 feet long. However, depending on the size, shape and general design of the bed (e.g., hospital bed, other medical bed, etc.) or other seating assembly on which a mat is configured to be positioned, the dimensions (e.g., length, width, etc.) of the mat can be larger or smaller than noted above. For example, a mat or topper member can be about 3 feet wide by 6 foot-4 inches or 6 foot-8 inches long. In some embodiments, the mat or topper member is sized to fit a standard sized bed (e.g., single, twin, queen, king, etc.) or a custom-designed (e.g., non-standard sized) bed. Thus, conditioner mats or topper members can be specially designed (e.g., non-standard shapes, sizes, etc.) according to a specific bed with which they will be used. Possible shapes include, but are not limited to, other triangular, square, other polygonal, circular, oval, irregular, etc. In addition, the mat can encompass all or substantially all of the top surface area of the mattress or other support member of a bed. Alternatively, the mat or topper member can encompass only a fraction of a mattress&#39;s total top surface area, such as, for example, 95%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, more than 95%, less than 20%, ranges between these values, and/or the like. 
     In some arrangements, the length and width of the fluid zones  34 ,  36 ,  44 ,  46  of a conditioner mat  20  are approximately 12 inches and 31 inches, respectively. Further, in certain embodiments, the length of the main non-fluid zones  50  is approximately 8 inches. However, the dimensions of the fluid zones and/or the non-fluid zones can vary, as desired or required by a particular application or use. For example, in one arrangement, the length of one or more fluid zones is approximately 8 inches or 16 inches, while the length of the non-fluid zones  50  is approximately 4 inches. In other embodiments, the length, width, shape, location along the mat, orientation, spacing and/or other details of the various portions and components of a conditioner mat may be greater or less than indicated herein. For instance, in some embodiments, the length of a fluid zone or a non-fluid zone is between about 1 inch and 24 inches (e.g., approximately 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ranges between such values, etc.) less than about 1 inch, more than about 24 inches, etc. 
       FIG.  6    illustrates a bottom view of a conditioner mat  20  positioned on a mattress  10 , cushion or other support member (e.g., foam pad). As shown, the mat  20  can include a lower skirt portion  21  or other securement device that is configured to at least partially wrap around the mattress  10  in order to secure the mat  20  to a bed (e.g., hospital or medical bed) or other seating assembly. Thus, the conditioner mat or topper member  20  can be generally designed like a fitted sheet, allowing it to be conveniently attached to and/or removed from a mattress or other upper support member of a bed assembly. In certain arrangements, the bottom skirt portion  21  extends continuously around the entire mattress  10  or other support member. Alternatively, the skirt portion  21  can be intermittently or at only partially positioned around the periphery of the mat  20 , as desired or required. The skirt portion  21  can include one or more elasticized portions or regions to help accommodate for variations in the dimensions of mattresses or other support members and/or to provide for a more snug fit. 
     As illustrated in  FIG.  7   , a conditioner mat  20  can include one or more straps  21 ′, bands, belts or other securement devices to help secure the mat  20  to a mattress, pad or other support structure  10  of a bed. For example, in the depicted embodiment, the mat  20  comprises a total of two securement devices  21 ′ that are shaped, sized and otherwise adapted to partially or completely surround the mattress  10 . The securement devices  21 ′ can include flexible straps that comprise an elastic structure and/or one or more elastic, stretchable or other flexible materials or members. Consequently, in such configurations, a user can conveniently pass the straps  21 ′ underneath a mattress  10  or other support structure of a bed in order to properly position the conditioner mat  20  on a bed assembly. Alternatively, each strap, band or other securement device  21 ′ can include two or more loose ends that are configured to be selectively attached to each other using a connection device or method (e.g., belt-like connection, mating clip portions, hook-and-loop fasteners, zippers, buttons, other mechanical fastener systems, a simple tie or knot system and/or the like). Further, regardless of their exact configuration, one or more properties of the securement devices  21 ′ can be modifiable to accommodate mattresses and other bed support structures of various sizes, shaped and types. For instance, in some embodiments, the length of a strap is adjustable. 
     Any of the embodiments of a conditioner mat or topper member  20  disclosed herein, or equivalents thereof, can be configured to include a fitted sheet design (e.g.,  FIG.  6   ), a strap or other securement device (e.g.,  FIG.  7   ) and/or any other device or method for temporary or permanent attachment to one or more portions of a bed (e.g., upper mattress or other support structure or member). Alternatively, a mat can be positioned adjacent to a mattress or other portion of a bed without being attached to it. In certain arrangements, a bottom surface of a conditioner mat or topper member includes one or more tactile or non-slip features or properties that are configured to increase the friction between the mat and the adjacent support structure, and thus, reduce the likelihood of movement of the mat relative to the bed, especially when an occupant is positioned thereon. For example, the mat can include a generally unsmooth surface (e.g., a surface having bumps, other projections or other tactile features, recesses or cavities, etc.), one or more relatively high friction regions (e.g., areas having rubber or relatively high-friction layers or strips) and/or the like. In other embodiments, the conditioner mat or other topper member are incorporated into a unitary structure with the bed&#39;s mattress or other support structure. 
     According to certain embodiments, for example, such as disclosed in  FIG.  8   , a conditioner mat  120  or topper member includes only a single zone  130  through which ambient and/or conditioned (e.g., cooled, heated, dehumidified, etc.) air or other fluid is selectively delivered. As discussed with reference to other arrangements herein, such a fluid zone  130  can extend along one or more regions or areas of the mat  120  in order to target specific portions of an occupant&#39;s body (e.g., head, shoulders, hips, heels, etc.). 
     Within the fluid zone  130  of the mat illustrated in  FIG.  8   , an upper surface (e.g., upper fabric, layer, film, other member, etc.) of the mat  120  can include a plurality of openings  124 . As discussed herein with reference to other configurations (e.g., those illustrated in  FIGS.  1 ,  2 ,  3 A- 3 C , etc.), such openings  124  can be configured to allow air or other fluid that enters into an interior space of the mat&#39;s fluid zone (e.g., through a spacer fabric, fluid distribution member, etc.). In certain embodiments, the quantity, size, shape, location, density, spacing, orientation and/or other characteristics of the openings  124  are selected to direct the fluid exiting the conditioner mat  120  in targeted regions or areas of the occupant&#39;s body, such as, for example, high pressure, temperature, friction and/or moisture regions that are susceptible to decubitus ulcers, other ailments, general discomfort and/or the like. 
     As shown in  FIG.  8   , the mat or topper member  120  can include one or more non-fluid zones or areas  150 ,  152  that are configured to prevent or substantially prevent air and other fluids from entering therein. According to some arrangements, such non-fluid zones  150 ,  152  comprise a foam (e.g., closed-cell, open-cell, viscoelastic, etc.) pad, other polymeric or other type of pad, filler materials, other layers or members and/or the like. As discussed herein with reference to other embodiments, such as, for example, those illustrated in  FIGS.  3 A- 3 C , the upper and lower layers (e.g., vinyl, other plastic, fabric, etc.) of a mat or topper member can be advantageously attached adjacent to such non-fluid zones or portions  50 ,  52 , thereby forming fluid boundaries that block or substantially block fluid flow. In the embodiment illustrated in  FIG.  8   , the conditioner mat  120  includes non-fluid zones or portions  150 ,  152  along the bottom and one of the sides of the bed  100 . However, such zones  150 ,  152  or portions that are generally configured to not receive fluids can be positioned at, along or near additional and/or different areas of the mat  120 . Further, the respective surface areas of the mat  120  covered by fluid zones  130  and non-fluid zones  150 ,  152  can be varied to accomplish a desired ventilation and/or conditioning (e.g., cooling, heating, dehumidification, etc.) effect above the mat  120 . 
       FIG.  9    illustrates another embodiment of a conditioner mat or topper member  220  secured to a medical bed  200  or other bed assembly. As shown, the mat  220  includes two fluid zones  234 ,  236  that are in fluid communication with a main passage  232  which extends along one of the mat&#39;s sides. In some arrangements, ambient and/or conditioned air is delivered from one or more fluid modules (not shown in  FIG.  9   ) into the main passage  232  via one or more ducts  272  or fluid conduits. The conditioner mat  220  can include one or more additional fluid zones  244  that are generally not in fluid communication with the first set of fluid zones  234 ,  236 . Accordingly, as discussed herein with reference to the arrangements of  FIGS.  1  and  2   , separate fluid zones (or sets of fluid zones) that are fluidly, hydraulically and/or thermally isolated from each other can be used to vary the ventilation and/or thermal conditioning effects along the top of a mat. Thus, fluid zones  234 ,  236  of the conditioner mat or topper member  220  can be cooled, while fluid zone  244  is heated, or vice versa. Alternatively, the type of fluid (e.g., ambient air, heated or cooled air, etc.) being delivered to all the fluid zones  234 ,  236 ,  244  of a mat  220  can be similar or substantially similar. In other embodiments, although the distinct fluid zones  234 ,  236 ,  244  are configured to receive the same or similar types of fluids, the flowrate of fluid delivery can be varied between fluid zones, as desired or required. 
     Another embodiment of a conditioner mat or topper member  320  is illustrated in  FIGS.  10 A and  10 B . As shown, the main portion  330  of the mat or topper member  320  can have a generally rectangular shape. In some arrangements, the dimensions, shape and other properties of the mat  320  are selected to generally match corresponding characteristics of the bed on which the mat will be positioned. As discussed herein with reference to other embodiments, the mat  320  of  FIG.  10 A  can include one or more fluid zones (e.g., regions having an interior space that is configured to receive air or other fluids) and/or non-fluid zones (e.g., regions having an interior space that is not configured to receive fluids) to achieve a desired fluid discharge pattern, and thus a desired climate control scheme, along a top portion of the mat  320 . 
     With continued reference to  FIGS.  10 A and  10 B , the mat or topper member  320  can include a fluid module  380  that is in fluid communication with one or more fluid zones of the mat&#39;s main portion  330 . As shown, the fluid module  380  can include a blower, fan or other fluid transfer device  382  that selectively delivers/draws air or other fluids to/from the main portion  330  of the mat  320 . The fluid module  380 , which in the illustrated arrangement is configured to hang off one side of the mat&#39;s main portion  330 , can also include an inlet fitting  386  that is fluidly coupled to an inlet  321  of the main portion  330 . Alternatively, as illustrated in other arrangements herein, a fluid module can be designed to hang from an end of the bed (e.g., a top or bottom end), along another side and/or any other location on, within or near the bed assembly. The fluid transfer device  382  can be placed in fluid communication with the downstream inlet fitting  386  using one or more conduits  384  or other passages. 
     According to certain embodiments, the fluid module  380  is configured to selectively heat and/or cool the fluid being transferred by the blower  382  toward the main portion  330  of the topper member  320 . For example, the fluid transfer device  382  can be placed in fluid communication with one or more thermoelectric devices (e.g., Peltier circuits), convective heaters and/or other conditioning (e.g., heating, cooling, dehumidifying, etc.) devices to selectively heat, cool and/or otherwise condition a fluid passing from the fluid module  380  to the main portion  330  of the mat  320 . For example, a thermoelectric device, which may be positioned within an inlet fitting  386 , can selectively heat or cool air or other fluid being transferred by the fluid module  380  to the main portion  330  of the mat or topper member  320 . As discussed in greater detail herein, fluid modules comprising blowers or other fluid transfer devices, thermoelectric devices or other conditioning devices and/or the like can be incorporated into any of the embodiments of a conditioner mat or topper member disclosed herein, or equivalents thereof. 
       FIGS.  11 A and  11 B  illustrate another embodiment of a topper member or mat  420  configured to be removably secured to the top of a medical bed, other type of bed or other seating assembly. As discussed herein with reference to other arrangements, the main portion  430  can include one or more fluid zones and/or non-fluid zones (not shown in  FIGS.  11 A and  11 B ) that are configured to direct ambient and/or conditioned air or other fluid to targeted regions of an occupant&#39;s anatomy. In the configuration depicted in  FIGS.  11 A and  11 B , the fluid module  480  is conveniently positioned within an interior cavity  432  or recessed portion of the topper member  420 . The cavity or recess  432  can be formed along an end (e.g., top or bottom) of the mat&#39;s main portion  430 . Alternatively, such a cavity or other space  432  can be included along a side, middle and/or any other location of the conditioner mat  420 , as desired or required. 
     With continued reference to  FIGS.  11 A and  11 B , the cavity  432  can be defined, at least in part, by a pair of oppositely-mounted enclosure members  434 . Regardless of its exact details, the cavity  432  can be configured to advantageously hide all or most (or at least some) of the fluid module  480  and related components, such as, for example, the blower, fan or fluid transfer device  482 , the one or more conduits  484  that place the fluid transfer device  482  in fluid communication with the mat&#39;s main portion  430 , the fluid inlet fitting  486  that establishes an interface with one or more interior spaces of the mat&#39;s fluid zones and/or the like. As illustrated in  FIGS.  11 A and  11 B , the cavity  432  can also be provided with a vent  438  that permits ambient air to enter the cavity so as to avoid a negative pressure being created therein. 
     The various embodiments of a conditioner mat or topper member disclosed herein, or equivalents thereof, can include one or more electrical connections for supplying electrical power to the fluid module(s) and/or any other electric components or devices included and/or associated with the mat. The electrical power supplied to a conditioner mat can come in any form, including AC or DC power, as desired or required. Therefore, a mat can comprise a power supply, a power transformer, a power cord, an electrical port configured to receive a cord and/or the like for electrically connecting the mat&#39;s electrical components to a facility&#39;s power system. Alternatively, the mat can be supplied with one or more batteries to eliminate the need for a hardwired connection into an electrical outlet while the mat is in use. According to certain embodiments, the battery comprises a rechargeable battery that can be easily and conveniently recharged while the mat is not in use. In some configurations, the battery can be separated and removed from the mat for replacement, recharging (e.g., using a separate charging station or device), repair or servicing, inspection and/or for any other purpose. 
     A mat can also include one or more wires and/or other electrical connections for incorporating other components into the mat&#39;s control system. For example, as discussed in greater detail herein, a mat can be equipped with one or more sensors (e.g., temperature, humidity, condensation, pressure, occupant detection, etc.). In some embodiments, a fluid module, power supply, sensor, other electrical component, device or connection and/or any other sensitive item can be separated and removed from the mat prior to a potentially damaging operation (e.g., washing or cleaning or the mat). For instance, the cavity  432  of  FIGS.  11 A and  11 B  can comprise a housing that is detachable from and re-attachable to the mat  420 . 
     Another embodiment of a conditioner mat or topper member  520  is illustrated in  FIGS.  12 A and  12 B . As shown, the main portion  530  of the mat  520  can include a cutout  532  or other feature that is sized, shaped and otherwise configured to accommodate a fluid module  580 . Accordingly, similarly to the arrangement of  FIGS.  11 A and  11 B , the fluid module  580  can be contained within an outer periphery of a bed when the mat  520  is positioned thereon. The cutout or recess  532  can be positioned along any portion of the mat and need not be confined to a particular corner or region of a main portion  530 . The cutout  532  can be situated along a different corner, along a side (e.g., generally between two corners), within an interior region of the main portion  530  and/or the like, as desired. By way of example, the conditioner mat  620  illustrated in  FIGS.  13 A and  13 B  comprises a cutout  632  along its front or back end and generally between its two sides. As shown in  FIG.  13 B , the fluid module  680  can be at least partially situated within the cutout  632 . In addition, at least some of the components and portions of a fluid module  680  that selectively supply fluid to the mat  620  can hang along an end or side of the mat  620 . For example, in the depicted arrangement, the fluid transfer device  682  and a portion of the conduit  684  are oriented generally perpendicularly relative to the main portion  630 . 
       FIG.  14    illustrates a perspective view of another embodiment of a conditioner mat  720  configured to be positioned along the top of a mattress  10 , pad, cushion or other support structure of a bed. As shown, one or more fluid modules  780  can be connected to a main portion  730  along one of the sides of the mat  720 . As discussed with reference to other arrangements herein, a fluid module can be positioned along any other portion of the mat  720 , either in lieu of or in addition to one of its sides. Similarly to the conditioner mat  620  of  FIGS.  13 A and  13 B , in some embodiments, at least a portion of the fluid module  780  in the depicted embodiment is generally perpendicular to the mat  720 . Therefore, for any of the embodiments disclosed herein, or equivalents thereof, a fluid module can be configured to hang along a side or an end of a conditioner mat. In such arrangements, one or more portions or components of the fluid module can be secured, temporarily or permanently, to an adjacent surface, such as, for example, a portion of a mattress or other support structure, a bed headboard or footboard, a bed guardrail, another portion of a bed assembly, the floor or a wall, other equipment located within a hospital room and/or the like. 
     As illustrated schematically in  FIG.  15   , a fluid module  80  can be positioned at any location within a main portion  30  of a conditioner mat  20  or at any location adjacent to or near the main portion  30 . For example, one or more fluid modules can be situated within a cavity or recess ( FIGS.  11 A and  11 B ) or a cutout ( FIGS.  12 A- 13 B ) of the main portion  30  along the top  80 A, bottom  80 C and/or the sides  80 B,  80 D of the mat  20 . Alternatively, one or more fluid modules can extend away from the main portion  30  of a mat  20  (e.g., along the top  80 A′, bottom  80 C′ and/or the sides  80 B′,  80 D′). For instance, a fluid module can generally hang off the side of the mat and the bed ( FIGS.  13 A,  13 B and  14   ). In any of the embodiments disclosed herein, a fluid module can be removably or permanently secured to a bed assembly (e.g., mattress or other support member, footboard or headboard, side rail) and/or any other device or surface. 
       FIG.  16 A  schematically illustrates a plan view of another conditioner mat or topper member  820 . As shown, the mat  820  includes four separate fluid zones  832 ,  834 ,  836 ,  838  that are positioned immediately adjacent to each other. One or more non-fluid zones (not shown) can be situated between the fluid zones to provide thermal or fluid isolation, to reduce costs and/or to provide any other benefit, as desired. In  FIG.  16 A , each fluid zone  832 ,  834 ,  836 ,  838  is supplied ambient and/or conditioned (e.g., cooled, heated, dehumidified, etc.) air or other fluid by one or more dedicated fluid modules  880 A,  880 B,  880 C,  880 D. In the illustrated embodiment, the fluid modules are positioned along a side of the mat  820 . The fluid modules can be located within a cavity or cutout. Alternatively, the fluid modules  880 A,  880 B,  880 C,  880 D can generally form a side edge of the mat  820 , can extend outwardly from the mat (e.g., past the outer periphery of the mattress on which the mat is positioned), can hang off the side of the mat  820  and/or the like. In other configurations, the fluid modules can be positioned in a location generally separate and remote from the mat  820 . For example, one or more of the fluid modules are located within a fluid box or other container that can be conveniently mounted on the bed assembly (e.g., to, along or near a headboard, footboard, guardrail, etc.), a wall, the floor and/or the like. In such embodiments, the fluid modules can be placed in fluid communication with the respective fluid zones of the mat&#39;s main portion  830  using one or more conduits. Additional details regarding fluid boxes are provided herein with reference to the arrangements illustrated in, inter alia,  FIGS.  17 A,  17 B and  19 A- 27   . 
     Additional embodiments of a conditioner mat or topper member  820 B- 820 C configured to be positioned on a medical bed, other type of bed or other seating assembly are illustrated in  FIGS.  16 B- 16 D . As depicted in  FIG.  16 B , the conditioner mat  820 B can include a single fluid zone  832 B and may be bordered by one or more adjacent non-fluid zones  850 B, as desired or required to achieve a particular fluid delivery scheme along an upper portion the bed  800 B. The non-fluid zones  850 B located at the upper and lower ends of the mat or topper member  820 B can have a generally tapered profile to improve the feel and general comfort level to an occupant. Fluid (e.g., ambient and/or conditioned air) is selectively supplied to the fluid zone  832 B of the conditioner mat  820 B using one or more fluid modules (e.g., blowers or other fluid transfer devices, thermoelectric devices, convective heaters, other thermal conditioning devices, dehumidifiers, etc.), which in some embodiments, are positioned within a fluid box  880 , or other enclosure and/or the like. 
     As discussed in greater detail with reference to other arrangements disclosed herein, the conditioner mat or topper member  820 B can be removably attachable to a mattress  810 B or other support structure (e.g., pad, cushion, box spring, etc.) of a bed assembly  800 B (e.g., hospital or medical bed, typical bed for home use, futon, etc.) using one or more connection devices or methods, such as, for example, straps, hook-and-loop fasteners, zippers, clips, buttons and/or the like. Alternatively, the position of the mat  820 B can be maintained relative to the top of a mattress  810 B or other support structure by friction (e.g., the use of non-skid surfaces, without the use of separate connection devices or features, etc.). Regardless of how the topper member is secured or otherwise maintained relative to a bed assembly, its size, shape, location relative to the mattress and an occupant positioned thereon and/or other details can be different than disclosed herein, as desired or required. 
       FIG.  16 C  illustrates another embodiment of a conditioner mat or topper member  820 C for a medical bed, other type of bed or other seating assembly. As shown, the mat  820 C can comprise more than one (e.g., two, three, four, more than four, etc.) separate fluid zones  832 C,  834 C. As discussed in greater detail herein, each fluid zone  832 C,  834 C can be configured to receive fluid having the same or a different properties (e.g., type, temperature, humidity, flowrate, etc.) than another zone. This can help provide customized ventilation, heating, cooling and/or other environmentally-conditioned schemes to a seated occupant. In the arrangement depicted in  FIG.  16 C , air or other fluid is selectively delivered to the fluid zones  832 C,  834 C by one or more fluid modules (not shown) positioned within a fluid box  880 . Alternatively, one or more fluid modules providing conditioned and/or unconditioned fluid to the conditioner mat  820 C need not be positioned within a fluid box  880  or other enclosure. In addition, as illustrated in  FIG.  16 D , a conditioner mat  820 D can include two or more fluid boxes  880 A,  880 B, as desired or required. For example, in the depicted embodiment, air from one or more fluid modules housed within a first fluid box  880 A is selectively delivered to a first fluid zone  832 D of the mat  820 D. Likewise, air from one or more fluid modules housed within a second fluid box  880 B can be selectively delivered to a second fluid zone  834 D. Thus, the type, flowrate, temperature and/or other properties or characteristics of the fluid being delivered to each zone  832 D,  834 D can be varied in order to achieve a desired ventilation, cooling and/or heating effect along the top surface of the mat or topper member  820 C. 
     As illustrated in the embodiments of  FIGS.  16 B- 16 D , the conditioner mat or topper member can be configured to only partially cover the underlying mattress or other support structure of a bed assembly. For example, the topper member can be positioned so that air can be selectively delivered to targeted areas of an occupant&#39;s anatomy. In any of the embodiments disclosed herein, or equivalents thereof, the mat or topper member can extend partially or completely across the length and/or the width of the mattress, pad or other bed support member situated therebelow. 
       FIGS.  17 A and  17 B  illustrate a hospital med or other medical bed  900  that is configured to receive one embodiment of a conditioner mat or topper member  920 . As shown, the conditioner mat  920  is positioned along the top of a mattress  10 , pad, cushion or other support structure of the bed  900 . The mat  920  can be removably or temporarily secured to the mattress or other support structure  710  using one or more securement devices  921  (e.g., a bottom skirt member such as included in a fitted sheet design), straps ( FIG.  7   ) and/or the like. Further, as with other arrangements disclosed herein, the depicted mat  920  can include one or more fluid zones into which ambient and/or environmentally-conditioned (e.g., cooled, heated, dehumidified, etc.) air or other fluids can be selectively delivered. The fluid zones can comprise spacer materials  928  (e.g., spacer fabric, other porous members or material, etc.) that are generally positioned within a interior space defined by upper and lower layers  922 ,  926 . 
     With continued reference to  FIGS.  17 A and  17 B , one or more of the bed&#39;s guardrails  904 , frame members or other support structures can be advantageously configured to receive a fluid conduit  972 ,  974 . Such guardrails  904  or other members can include one or more internal channels or passages through which air or other fluid may pass. Thus, air or other fluid discharged from one or more fluid modules (e.g., located within the fluid box  960  in the depicted embodiment) can be routed through one or more hoses or other conduits  972 ,  974  to such guardrails  904 . Thus, as illustrated in  FIGS.  17 A and  17 B , the hoses or other conduits  972 ,  974  can be placed in fluid communication with corresponding conduits  972 ′,  974 ′ formed within one or more portions of a guardrail or similar structure. Accordingly, ambient and/or environmentally-conditioned air or other fluids exiting the fluid box  960  can be selectively routed to the guardrail conduits  972 ′,  974 ′. Air or other fluid entering the fluid passages of the guardrails  904  can be distributed to the interior spaces of the various fluid zones of the mat  920  using one or more intermediate fluid connectors  976  or other fluid branches. 
     In the arrangement illustrated in  FIGS.  17 A and  17 B , the fluid box  960  is mounted to the footboard  906  of the bed assembly  900 . Alternatively, the fluid box  960 , and thus the one or more fluid modules positioned therein, can be mounted to the headboard  902 , on one of the guardrails  904  and/or any other location (e.g., either on the bed or away from the bed), as desired or required. In addition, as discussed herein with reference to other embodiments, the conditioner mat  920  of  FIGS.  17 A and  17 B  can be configured so that it is removable from the mattress  10 , the fluid connectors  976  that place the mat  920  in fluid communication with the guardrail conduits  972 ′,  974 ′ and/or any other portion of the bed assembly, for cleaning, other maintenance and/or any other purpose. 
       FIGS.  17 C and  17 D  illustrate another embodiment of a medical bed  900 ′ configured to selectively provide conditioned and/or unconditioned air or other fluid toward an occupant positioned thereon. As shown, the bed  900 ′ can comprise a conditioner mat or topper member  920 ′ positioned, at least partially, along its top surface. The conditioner mat  920 ′ can include one or more fluid zones  932 ′,  934 ′,  936 ′,  938 ′ and/or non-fluid zones, allowing for customized ventilation and/or thermal or environmental conditioning (e.g., cooling, heating, etc.) schemes along the upper surface of the bed  900 ′. In the depicted arrangement, air or other fluid is provided to the various fluid zones  932 ′,  934 ′,  936 ′,  938 ′ of the topper member  920 ′ using one or more fluid modules (e.g., blowers or other fluid transfer devices, thermoelectric devices, convective heaters and/or other thermal conditioning devices, dehumidifying devices, etc.) that may be located within, along or near a fluid box  960 ′, another type of enclosure or device, an adjacent surface (e.g., wall, floor, etc.) and/or the like. In  FIGS.  17 C and  17 D , the bed  900 ′ comprises a single fluid box  960 ′ that is removably secured to the footboard  906 ′. However, the quantity, type, size, shape, location and/or other details of the fluid box  960 ′ and/or the various components located therein can vary, as desired or required. 
     With continued reference to  FIG.  17 C , conditioned and/or unconditioned fluid exiting the fluid box  960 ′ can be delivered to the various fluid zones of the conditioner mat  920 ′ using one or more delivery conduits  972 ′. As discussed in greater detail with reference to other embodiments discussed herein, such delivery conduits  972 ′ can be incorporated into the design of the mat  920 ′ itself. Alternatively, one or more delivery conduits  972 ′ can be physically separated from the conditioner mat  920 ′. For example, in certain arrangements, the delivery conduits  972 ′ are incorporated into and/or positioned adjacent to a side guardrail  904 ′, footboard  906 ′, headboard  902 ′ and/or any other portion of the bed  900 ′ or other seating assembly. Thus, air or other fluid (e.g., having a general direction of flow schematically represented by arrows A in  FIG.  17 D ) can be selectively transferred from one or more delivery conduits into one or more fluid zones  932 ′,  934 ′,  936 ′,  938 ′. Air or other fluid can enter an interior space of the conditioner mat  920 ′ along one or more other portions of the bed assembly  900 ′ (e.g., the opposite side, top, bottom, etc.), as desired or required. 
       FIGS.  18 A- 18 E  illustrate various views of another embodiment of a conditioned mat or topper member  1020 . The mat  1020  can include a main portion  1030  that comprises one or more fluid zones and/or non-fluid zones (not shown). The main portion  1030  can include upper and lower layers or members  1022 ,  1026  that generally define one or more interior spaces S 1 , S 2 , S 3 . A spacer material or other fluid distribution member  1028  can be positioned within one or more of the interior spaces defined by the upper and lower layers of the mat&#39;s main portion  1030 . Such spacer materials or other members can help maintain the shape and integrity of the interior spaces, especially when the mat or topper member  1020  is subjected to compressive loads during use. In addition, as discussed with reference to other configurations herein, the mat  1020  can include one or more fluid boundaries or nodes N that generally create separate fluid zones and/or non-fluid zones within the mat. 
     With continued reference to  FIGS.  18 A- 18 E , the conditioner mat  1020  can include a fluid header  1072  through which ambient and/or environmentally-conditioned (e.g., cooled, heated, dehumidified, etc.) air or other fluid is selectively conveyed. In certain arrangements, such a header  1072  can at least partially form or can be incorporated, at least in part, into a guardrail or other portion of a bed assembly (e.g., hospital bed, other medical bed, other type of bed, other seating assembly, etc.). Thus, as discussed herein with reference to the assembly of  FIGS.  17 A and  17 B , the depicted embodiment can provide a relatively simple and convenient way of delivering fluids to a conditioner mat  1020 . 
     According to certain arrangements, the fluid header  1072  comprises a multi-piece design that allows the internal passage P of the header  1072  to be conveniently accessed by a user. For example, by removing one or more end pieces  1073  and/or other fasteners (not shown), the fluid header  1072  can be opened along a seam  1075  to expose its internal passage P. Thus, one or more intermediate fluid connectors  1076  can be positioned within such a seam, prior re-attaching the adjacent components of the header  1072  to each other. Consequently, the openings within the intermediate fluid connectors  1076  can advantageously place the internal passage P of the header  1072  in fluid communication with one or more fluid zones of the mat&#39;s main portion  1030 . Thus, as air is delivered from a fluid module into the fluid header  1072 , such air can be conveyed to the various fluid zones of the mat  1020  via the fluid connectors  1076 . Such a design allows for the conditioner mat or topper member  1020  to be conveniently modified as desired or required by a particular application or use. For example, intermediate fluid connectors  1076  can be quickly and reliably added to or removed from the system. Further, the main portion  1030  of the mat  1020  can be easily removed for cleaning, maintenance, replacement, inspection and/or any other purpose. The fluid header can comprise one or more materials, such as for example, foam, plastic, wood, paper-based materials and/or the like. 
     As discussed with reference to other configurations herein, the upper and lower layers  1022 ,  1026  of the conditioner mat  1020  can include plastics (e.g., vinyl), tight-woven fabrics, specially-engineered materials and/or the like. However, in one simplified arrangement, the layers  1022 ,  1026  of the mat  1020  comprise cotton, linen, satin, silk, rayon, bamboo fiber, polyester, other textiles, blends or combinations thereof and/or other materials typically used in bed sheets and similar bedding fabrics. In some embodiments, such fabrics have a generally tight weave to reduce the passage of fluids thereacross. In one embodiment, one or more coatings, layers and/or other additives can be added to such fabrics and other materials to improve their overall fluid impermeability. Thus, such readily accessible materials can be used to manufacture a relatively simple and inexpensive version of a conditioner mat or topper member  1020 . For example, the upper and lower layers can be easily secured to each other (e.g., using stitching, glue lines or other adhesives, mechanical fasteners, etc.) to form the desired interior spaces S 1 , S 2 , S 3  of the fluid zones. Spacer fabric  1028  or other spacer or distribution materials can be inserted within one or more of the fluid zones, as desired or required. In some embodiments, foam pads, other filler materials and/or the like can be inserted into spaces or chambers of the mat  1020  to create corresponding non-fluid zones. 
     As with any of the embodiments discussed herein, the spacer fabric  1028  or other spacer materials can be easily removed from the interior spaces prior to washing or otherwise cleaning the mat  1020 . However, the spacer fabric  1028  can be left within the corresponding space or pocket of the mat during such cleaning, maintenance, repair, inspection and/or other procedures. 
     For any of the embodiments of a conditioner mat or topper member disclosed herein, one or more additional layers or members can be positioned on top of the mat. For example, as shown in the exploded perspective view of  FIG.  1   , a fluid distribution and conditioning member  90  may be situated along the upper surface of the mat  20 . Such a conditioning member  90  can help provide a more uniform distribution of fluid flow toward an occupant. In addition, the conditioning member  90  can improve the comfort level to the occupant (e.g., by providing a softer, more consistent feel). 
     In addition, for any of the topper member arrangements disclosed herein, one or more layers can be positioned immediately beneath the fluid zones to enhance the operation of the topper member. For instance, in one embodiment, a lower portion of the mat (or alternatively, an upper portion of the mattress or other support structure on which the mat is positioned) can comprise one or more layers of foam (e.g., closed-cell foam), other thermoplastics and/or other materials that have advantageous thermal insulation and air-flow resistance properties. Thus, such underlying layers can help reduce or eliminate the loss of thermally-conditioned fluids being delivered into the fluid zones through the bottom of the mat or topper member. Such a configuration can also help to reduce the likelihood of inadvertent mixing of different fluid streams being delivered in adjacent or nearby fluid zones. 
     According to some embodiments, any of the conditioner mats or topper members disclosed herein, or equivalents thereof, are configured to selectively receive non-ambient air within one or more of their fluid zones, either in lieu of or in addition to environmentally or thermally-conditioned (e.g., heated, cooled, dehumidified, etc.) air or other fluids. For example, a header or other conduit in fluid communication with one or more of the mat&#39;s fluid zones can be connected to a vent or register that is configured to deliver fluids from a facility&#39;s main HVAC system. Alternatively, a facility can have a dedicated fluid system for delivering air and other fluids to the various topper members and/or other climate controlled seating assemblies. In other arrangements, one or more medicaments or other substances can be added to the ambient and/or conditioned (e.g., heated, cooled, dehumidified, etc.) air or other fluids being delivered (e.g., by a fluid module, HVAC system, etc.) into a topper member. For example, medicines, pharmaceuticals, other medicaments and/or the like (e.g., bed sore medications, asthma or other respiratory-related medications, anti-bacterial medications or agents, anti-fungal medications or agents, anesthetics, other therapeutic agents, insect repellents, fragrances and/or the like). In some embodiments, a climate conditioned bed additionally includes at least one humidity or moisture sensor and/or any other type of sensor that are intended to help prevent or reduce the likelihood of pressure ulcers can be selectively delivered to a patient through a conditioner mat or topper member. In other embodiments, such medicaments or other substances can be adapted to treat, mitigate or otherwise deal with any related symptoms. 
     In addition, in some embodiments, it may be beneficial to cycle the operation of one or more fluid modules to reduce noise and/or power consumption or to provide other benefits. For example, fluid modules can be cycled (e.g., turned on or off) to remain below such a threshold noise level or power consumption level. In some embodiments, the threshold or maximum noise level is determined by safety and health standards, other regulatory requirements, industry standards and/or the like. In other arrangements, an occupant is permitted to set the threshold or maximum noise level, at least to the extent provided by standards and other regulations, according to his or her own preferences. Such a setting can be provided by the user to the climate control system (e.g., control module) using a user input device. Additional details for such power conservation and/or noise abatement embodiments are provided in U.S. patent Ser. No. 12/208,254, filed Sep. 10, 2008, titled OPERATIONAL CONTROL SCHEMES FOR VENTILATED SEAT OR BED ASSEMBLIES and published on Mar. 12, 2009 as U.S. Publication No. 2009/0064411, the entirety of which is hereby incorporated by reference herein. 
     One embodiment of a control scheme for operation of one or more fluid modules configured to provide environmentally-conditioned (e.g., heated, cooled, dehumidified, etc.) and/or ambient air to a topper member or mat is schematically and generally represented by the wiring diagram  1500  illustrated in  FIG.  34   . As shown, in order to reduce power consumption of the climate controlled topper member, to improve its performance, enhance the occupant&#39;s comfort level and/or for any other purpose, the system&#39;s control unit  1510  (e.g., electronic control unit, control module, etc.) can be adapted to regulate the operation of a fluid module (e.g., a blower or other fluid transfer device, a thermoelectric device, a convective heater or other thermal conditioning device, etc.) and/or any other electric component of device of the system based on, at least in part, input from a moisture sensor  1530  and/or any other type of sensor (e.g., temperature sensor, pressure sensor, occupant-detection sensor, humidity sensor, condensation sensor, etc.). Such control schemes can help avoid excessive use of battery power, over cooling or over heating of the topper member and/or any other undesirable conditions. 
     With continued reference to the schematic of  FIG.  34   , a moisture sensor  1530  located on or near the topper member or the bed assembly on which the topper member is positioned can advantageously determine if excessive humidity or moisture is present near the occupant. Accordingly, the sensor  1530  can provide a corresponding feedback signal to the control unit  1510  in order to determine if, when and how the fluid module should be activated or deactivated. For example, is some embodiments, a fluid module can be operated only when a threshold level of moisture, humidity and/or temperature has been detected by one or more sensors  1530 . Such a scheme can help extend the useful charge period of a battery or other power source  1520  that supplies electrical power to one or more fluid modules of the system. Such control schemes can also help ensure that potentially dangerous and/or uncomfortable over-temperature or under-temperature conditions do not result when operating a climate controlled conditioner mat or topper member. In addition, such control methods, which in some arrangements incorporate one or more other devices or components (e.g., an electrical load detection device, an occupant detection switch or sensor  1550 , other switches or sensors, etc.), can be incorporated into any of the topper embodiments disclosed herein, or equivalents thereof. 
     In some embodiments, a climate-controlled mat or topper member can include a timer configured to regulate the fluid module(s) based on a predetermined time schedule. For example, such a timer feature can be configured to regulate when a blower or other fluid transfer device, a thermoelectric device, a convective heater or other thermal conditioning device and/or any other electrical device or component is turned on or off, modulated and/or the like. Such timer-controlled schemes can help reduce power consumption, enhance occupant safety, improve occupant comfort and/or provide any other advantage or benefit. 
     Relatedly, one or more of the components (e.g., fluid transfer device, thermoelectric device, etc.) that can be included in fluid modules, which supply air and other fluids to corresponding mats or topper members, can also be configured to cycle (e.g., turn on or off, modulate, etc.) according to a particular algorithm or protocol to achieve a desired level of power conservation. Regardless of whether the fluid module cycling is performed for noise reduction, power conservation and/or any other purpose, the individual components of a fluid module, such as, for example, a blower, fan or other fluid transfer device, a thermoelectric device, a convective heater and/or the like, can be controlled independently of each other. 
     Additional details regarding the incorporation of a separate HVAC system into an individualized climate control system (e.g., topper member), the injection of medicaments and/or other substances into a fluid stream and the cycling of fluid modules are provided in: U.S. Provisional application Ser. No. 12/775,347, filed May 6, 2010 and titled CONTROL SCHEMES AND FEATURES FOR CLIMATE-CONTROLLED BEDS; U.S. patent application Ser. No. 12/505,355, filed Jul. 17, 2009, titled CLIMATE CONTROLLED BED ASSEMBLY and published on Jan. 21, 2010 as U.S. Publication No. 2010/0011502; and U.S. patent application Ser. No. 12/208,254, filed Sep. 10, 2009, titled OPERATIONAL CONTROL SCHEMES FOR VENTILATED SEAT OR BED ASSEMBLIES and published on Mar. 12, 2009 as U.S. Publication No. 2009/0064411, the entireties of all of which are hereby incorporated by reference herein. 
       FIGS.  19 A and  19 B  illustrate one embodiment of a fluid box  60  that is sized, shaped and otherwise designed to house one or more fluid modules  62 A,  62 B,  64 A,  64 B. The depicted fluid box  60  includes a total of four fluid modules within its interior I. As shown, the fluid modules are grouped into two pairs (e.g., a first module pair  62 A,  62 B and a second module pair  64 A,  64 B). In some embodiments, such as the one illustrated in  FIG.  19 B , the first pair (or other grouping) of fluid modules  62 A,  62 B is configured to selectively deliver ambient and/or environmentally-conditioned air to one side of a conditioner mat (see  FIGS.  1  and  2   ), while the second pair (or other grouping) of fluid modules  64 A,  64 B is configured to selectively deliver ambient and/or environmentally-conditioned air to the opposite side of a conditioner mat. However, the quantity, spacing, orientation, grouping and/or other details associated with the inclusion of fluid modules within a fluid box can be different than illustrated and discussed herein, as desired or required. For example, each fluid module can be configured to deliver ambient and/or conditioned fluid into only a single fluid zone. In other arrangements, fluid exiting two or more modules can be combined and delivered simultaneously into one or more fluid zones of a conditioner mat. 
     With continued reference to  FIG.  19 B , the interior of a fluid box  60  can include one or more layers of insulating materials  68  that are configured to reduce temperature fluctuations within certain portions of the fluid box interior I and/or reduce the noise levels emanating from the fluid box  60  when the fluid modules are operating. In some embodiments, the fluid box can include one or more noise reduction layers, materials, devices or features, either in lieu of or in addition to thermal insulating materials. In some arrangements, the same layers, devices or members are used to provide a desired level of thermal insulation and a desired amount of noise reduction. As shown, a power supply  61 , which provides electrical power to the fluid modules  62 A,  62 B,  64 A,  64 B and/or any other electrical component associated with the mat&#39;s climate control system, can be positioned within an interior I of the fluid box  60 . Alternatively, the power supply  61  can be moved outside the box  60  to avoid high heat conditions and other potentially damaging temperature fluctuations resulting from the operation of the fluid modules (e.g., fluid transfer devices, thermoelectric devices, etc.). For example, in one embodiment, the system includes a power supply  61  that is physically separated from the box or other enclosure. In such arrangements, one or more electrical cables, wires and/or other connections are provided to properly connect a power supply to the fluid modules and/or any other electrical components. 
     With continued reference to  FIG.  19 B , each thermoelectric housing  66 ,  67  and/or any other portion or component of the fluid module  62 A,  62 B,  64 A,  64 B can comprise its own outlet fitting  63 A,  63 B,  65 A,  65 B, which, in some embodiments, serves as an interface between the fluid transfer device and the conduit  72 ,  74  that places the corresponding fluid module in fluid communication with at least a portion of a conditioner mat or topper member. Various non-limiting embodiments of an outlet fitting  63 A- 63 E are illustrated in  FIG.  21   . As shown, the outlet fittings  63 A- 63 E can include any shape, size, general configuration and/or other features or characteristics, as desired or required for a particular application or use. For example, two of the fittings  63 B,  63 D comprise bellows, while one of the fittings  63 D is configured to accommodate a thermoelectric device. 
     In some embodiments, such as those illustrated in  FIGS.  19 B and  20   , the outlet fittings  63 A,  63 B,  65 A,  65 B comprise a thermoelectric device  66 ,  67  (or a convective heater or any other type of thermal conditioning device) positioned therein. Thus, air and other fluids passing from the respective fluid transfer devices to the outlet fittings can be advantageously heated or cooled, as desired or required. The waste air stream from the thermoelectric devices  66 ,  67  can be routed to the space generally outside the insulation layer  68  where it can be more effectively and conveniently eliminated from the outlet vents V 2  located along the top of the fluid box  60 . As shown in  FIG.  19 B , ambient air can be drawn into an interior I of the fluid box  60  through one or more inlet vents V 1  located along the bottom of the box. Further, in order to increase the use of generally less-expensive, commercially-available materials, the downstream end of the outlet fittings  63 A- 63 E (see, e.g.,  FIG.  21   ) can include standard 1-inch or 2-inch diameter rubber tubing or other commercially available conduits. This can help reduce manufacturing and maintenance costs. In other embodiments, however, one or more non-standard conduits can be used. In addition, as shown in  FIG.  20   , a fluid box  60  can include a hinged door  69  or similar device to facilitate access to its interior I. 
     Another embodiment of a fluid box  60 ′ is illustrated in  FIGS.  22 ,  23 A and  23 B . The depicted fluid box  60 ′ is generally smaller than the box  60  of  FIGS.  19 A and  19 B . As illustrated in  FIG.  23 B , the fluid box  60 ′ includes only a single fluid module  62 ′. Thus, such a smaller fluid box  60 ′ can be utilized when the fluid demand for a conditioner mat or topper member is relatively small. The fluid box  60 ′ can include one or more buttons  94  or other controllers that help regulate the operation of the fluid module(s) positioned therein. For example, in one embodiment, the box  60 ′ includes a red button or other controller, which the user presses or otherwise manipulates to direct relatively warm air to the topper member, and a blue button or other controller, which the user presses or otherwise manipulates to direct relatively cool air to the topper member. A fluid box (or a separate controller or control panel) can include additional buttons, knobs, dials, keypads, touchscreens and/or other controllers, as desired. 
     With continued reference to  FIG.  22   , a channel  96  or other hooking device located along the rear surface of the fluid box  60 ′ can help mount the box  60 ′ to a headboard, footboard, a side rail, a side panel, a frame or other support structure and/or any other portion of a bed (e.g., hospital or medical bed, conventional bed, other type of bed, other seating assembly, etc.) and/or any other surface or location (e.g., wall, floor, an adjacent medical device, other hospital equipment, etc.). 
     In certain embodiments where fluid modules  62 ,  64  located within a single fluid box  60  are configured to both heat and cool a fluid being delivered to a conditioner mat, the waste streams of the respective thermoelectric devices  65 ,  66  can be used to help improve the overall thermal-conditioning efficiency of the system. For example, assuming that the first fluid module  62  schematically illustrated in  FIG.  24    is operating in a cooling mode, the waste fluid W 1  exiting the first thermoelectric device  65  will be warm relative to ambient air. Thus, at least a portion of this relatively “warm” fluid stream can be directed into the inlet of the second fluid module  64 , which is operating in a heating mode. Thus, it will be generally easier and more cost effective to heat the air exiting the second fluid module  64  under such a scheme (e.g., because the starting temperature of the fluid to be heated is generally higher than ambient air). Likewise, the efficiency of the first fluid module  62  can be improved if a portion of the relatively cool waste fluid W 2  exiting the second thermoelectric device  66  is directed to the inlet of the first fluid module  62 . 
     As noted above and illustrated in  FIG.  25   , a conduit  72  that delivers thermally-conditioned fluid from the fluid modules (e.g., located within a fluid box) to a conditioner mat or topper member  20  can be partially or completed covered with one or more layers of thermal insulation  73 . Such a configuration, which may be incorporated into any of the embodiments disclosed herein or equivalents thereof, can help reduce or prevent undesirable heat transfer (e.g., either to or from the fluid being delivered to the mat). As a result, the temperature of the fluids being delivered to the fluid zones of a mat or topper member can be more accurately maintained within the desired range. 
     In certain arrangements, two or more outlet fittings  63  can be used to deliver ambient and/or conditioned fluid from one or more fluid modules to an inlet of a conditioner mat  20 . With reference to  FIG.  26   , such a dual conduit design can help reduce fluid headlosses through the system, thereby lowering the backpressure experienced by the blowers and other components of the fluid modules. With reference to  FIG.  27   , a fitting  76  can be used at the inlets of a conditioner mat or topper member  20 . Such a fitting  76  can help prevent or reduce the likelihood of leaks as air or other fluid is transferred from the upstream conduit  72  to the mat  20 . In addition, such a fitting  76  can make it easier for a user to connect (or disconnect) a mat from the upstream fluid delivery system (e.g., conduit  72 ). Such features can be incorporated into any of the mat or topper member embodiments disclosed herein, or equivalents thereof. 
       FIGS.  28 A- 28 C  illustrate different embodiments of ensuring that the desired volume or flowrate of fluid is delivered to each fluid zone of a conditioner mat or topper member. For example, in the arrangement depicted in  FIG.  28 A , the upstream fluid zone  34 A (e.g., the fluid zone closest to the inlet fitting  76 A) comprises a gate  51 A at or near the interface of the fluid zone  34 A and the main passage  32 A. According to some embodiments, the gate  51 A comprises one or more foam pieces or any other flow blocking or diversion members that can regulate the rate of fluid flowrate from the passage  32 A to the upstream fluid zone  34 A. The gate can include one or more other materials other than foam, such as, for example, other polymeric or elastomeric materials, paper or wood-based materials, metals, alloys, composites, textiles, fabrics, other natural or synthetic materials and/or the like. In other embodiments, the gates are created by strategically attaching the upper and lower portions (e.g., using stitching, adhesives, hot melting, crimping, other fasteners, any other connection method or device) to each other, either in lieu of or in addition to including flow blocking or diverting members (e.g., foam or other materials, etc.). Thus, regardless of how the gates are configured, as flow into the upstream fluid zone  34 A becomes restricted, more fluid will be delivered to downstream fluid zones (zone  36 , see, e.g.,  FIGS.  1 ,  2 ,  4  and  5   ). 
     In  FIG.  28 B , the main passage  32 B includes one or more fluid boundaries  33 B that help ensure that a particular portion of the fluid entering the conditioner mat  20 B enters the upstream fluid zone  34 B. As discussed in greater detail herein, such fluid boundaries or nodes can be created using various devices or methods, such as, for example, hot melting, gluing or otherwise joining the upper and lower sheets of the mat together. Alternatively, in order to ensure more accurate flow balancing between the various fluid zones, separate passages (e.g., in the form of conduits) can be used to feed individual fluid zones. 
     Another embodiment of improving or enhancing flow balancing into the various fluid zones is illustrated in  FIG.  28 C . As shown, the inlet fitting  76 C can be positioned further into the passage  32 C or conduit of the conditioner mat  20 C or topper member. Such a feature can help direct additional fluid past the upstream fluid zone  34 C and into downstream fluid zones, as fluid is less likely, hydraulically, to enter into the most upstream zone  34 C. One or more additional ways of balancing fluid flow into the various fluid zones can also be used, either in lieu of or in addition to those specifically disclosed herein. For example, the quantity, size, shape, density, spacing and other details of the outlet openings located within each fluid zone can affect how well fluid flows are balanced. In some embodiments, the size (e.g., width, length, height, cross-sectional area, etc.), location and other details of the gates or other inlets into each of the gates can be adjustable, allowing a user to modify flow distribution according to a desired or required scheme. For example, in one embodiment, the length of a blocking member that helps define a gate  51 A,  51 B can be shortened or lengthened (e.g., using a telescoping design, by removing or adding portions, etc.). 
       FIGS.  29 A and  29 B  illustrate another embodiment of a conditioner mat or topper member  1120  that is configured to be positioned, at least partially, along an upper portion of a medical bed, other type of bed or other seating assembly. As with other embodiments disclosed herein, the depicted conditioner mat  1120  comprises one or more fluid zones  1132 ,  1142  that are configured to selectively receive thermally or environmentally conditioned and/or unconditioned fluid (e.g., ambient, heated and/or cooled air from one or more fluid modules). 
     As illustrated in the partial perspective view of  FIG.  29 B , the conditioner mat  1120  can include one or more spacer material portions  1128 A- 1128 E positioned between a generally fluid impermeable bottom layer  1124  (e.g., vinyl sheet or layer, tight-woven fabric, lining, etc.) and an upper scrim layer  1180 . For clarity, at least some of the layers and other components of the mat  1120  are shown separated from each other in  FIG.  29 B . The generally fluid impermeable bottom layer  1124  and an upper scrim layer  1180  can be selectively and strategically attached to each other to form continuous or intermittent fluid barriers  1184  or borders that prevent or reduce the likelihood of fluid flow thereacross. Consequently, fluid zones, non-fluid zones, chambers, passages and other features can be advantageously provided within a conditioner mat  1120 . According to certain arrangements, the barriers  1184  can be formed using stitching, fusion, adhesives, heat staking, other bonding agents or techniques and/or any other attachment method or device. Such fluid barriers  1184  can help direct fluid into targeted fluid zones, through specific passages or openings and/or as otherwise desired or required. For example, in the arrangement illustrated in  FIGS.  29 A and  29 B , fluid barriers  1184  are used to create a plurality of passages  1128 B- 1128 E located along the sides of the mat  1120 . 
     With continued reference to  FIGS.  29 A and  29 B , as with any other embodiments disclosed herein, the conditioner mat  1120  can additionally include a comfort layer  1190  and/or any other layer generally above (and/or or below) the scrim layer  1180 . Such an air permeable comfort layer  1190  (e.g., quilt layer, soft air permeable or perforated foam, etc.) can further enhance the comfort level of an occupant positioned along the top of the conditioner mat  1120 . In some arrangements, the scrim layer  1180 , and/or any other layers or components positioned between the upper comfort layer  1190  and the spacer material  1128 A- 1128 E (e.g., spacer fabric, air permeable structure, woven polyester or other material, etc.) or other fluid distribution member, are configured to help distribute the air or other fluid being delivered to the mat or topper member  1120 . The use of heat staking, stitching, fusion, other types of bonding and/or any other attachment method or device can be incorporated into any embodiments of a conditioner mat or topper member disclosed herein or equivalents thereof, including those illustrated in  FIGS.  1 - 33   . 
     A partial perspective view of one embodiment of a spacer material  1200  configured for use in a conditioner mat or topper member is illustrated in  FIG.  30   . As shown, the spacer material  1200  can comprise one or more fluid permeable materials and/or structures. For example, the spacer material can include a spacer fabric, a porous foam, a honeycomb or other porous structure, other materials or members that are generally air permeable or that have an open structure through which fluids may pass and/or the like. As with the arrangement of  FIGS.  29 A and  29 B , the spacer material or member  1200  depicted in  FIG.  30    can include one or more fluid barriers  1284  that are continuously or intermittently positioned so as to create separate fluid passageways  1212 ,  1214 ,  1222 ,  1224 , fluid zones  1204 , non-fluid zones and/or other fluid boundaries, as desired or required. The barriers  1284  can be formed using stitching, heat staking, adhesives, crimping, clips, other fasteners, bonding or other fusion techniques and/or the like. In some embodiments, as illustrated in  FIG.  30   , a mat comprises a spacer  1200  that includes generally tubular spacer members  1212 ,  1214 ,  1222 ,  1224  and/or generally flat spacer members  1204 . The tubular spacer members, which in some arrangements serve as main conduits, can be positioned along the sides of the mat (as illustrated in  FIG.  30   ) and/or any other mat portion (e.g., middle, away from the sides, etc.), as desired or required. 
     One embodiment of a fluid nozzle or other inlet  1300  configured to be used on a conditioner mat is illustrated in  FIG.  31   . As shown, the nozzle  1300  can extend along an edge (e.g., side) of a conditioner mat or topper member  20  so as to facilitate connection to (or disconnection from) a conduit (not shown) that places the mat  20  in fluid communication with one or more fluid modules. The nozzle  1300  can include a main portion  1310 , which in some embodiments, includes a generally cylindrical shape defining an interior space  1304 . Along it exterior surface, the main portion  1310  can comprise one or more alignment and/or quick-connect features  1320  (e.g., tabs, other protrusions, slots, other recesses, etc.) that are shaped, sized and otherwise configured to generally mate with corresponding mating or engaging features on the conduit (not shown) to which the fluid nozzle  1300  can be selectively connected or disconnected. 
     Other embodiments of a fluid nozzle  1400  for a conditioner mat or topper member  20  are illustrated in  FIGS.  32  and  33   . As with the nozzle of  FIG.  31   , the depicted arrangements comprise a main portion  1410  which generally extends from an edge of the mat  20  and which comprises one or more alignment and/or quick-connect features  1420 . In addition, as illustrated in the cross-sectional view of  FIG.  33   , the layers and/or other components of the conditioner mat  20  that define an interior space through which air is selectively delivered can be configured to properly locate and secure the nozzle  1400  thereon. For example, fluid boundaries or barriers  1484  (e.g., stitching, heat staking, bonding, etc.) can be used to form the opening through which the nozzle  1400  can extend. 
     As discussed herein, control of the fluid modules and/or any other components of a conditioner mat or topper member can be based, at least partially, on feedback received from one or more sensors. For example, a mat or topper member can include one or more thermal sensors, humidity sensors, condensation sensors, optical sensors, motion sensors, audible sensors, occupant detection sensors, other pressure sensors and/or the like. In some embodiments, such sensors can be positioned on or near a surface of the mat or topper member to determine whether cooling and/or heating of the assembly is required or desired. For instance, thermal sensors can help determine if the temperature at a surface of the mat is above or below a desired level. Alternatively, one or more thermal sensors and/or humidity sensors can be positioned in or near a fluid module, a fluid conduit (e.g., fluid passageway) and/or a layer of the upper portion of the topper member (e.g., fluid distribution member, comfort layer, etc.) to detect the temperature and/or humidity of the discharged fluid. Likewise, pressure sensors can be configured to detect when a user has been in contact with a surface of the bed for a prolonged time period. Depending on their type, sensors can contact a portion of the mat or the adjacent portion of the bed assembly on which the mat has been situated. As discussed herein, in some embodiments, sensors are located within and/or on the surface of the mat or topper member. However, in other arrangements, the sensors are configured so they do not contact any portion of the mat at all. Such operational schemes can help detect conditions that are likely to result in pressure ulcers. In addition, such schemes can help conserve power, enhance comfort and provide other advantages. For additional details regarding the use of sensors, timers, control schemes and the like for climate controlled assemblies, refer to U.S. patent application Ser. No. 12/208,254, filed Sep. 10, 2008, titled OPERATIONAL CONTROL SCHEMES FOR VENTILATED SEAT OR BED ASSEMBLIES and published on Mar. 12, 2009 as U.S. Publication No. 2009/0064411, and U.S. patent application Ser. No. 12/505,355, filed Jul. 17, 2009, titled CLIMATE CONTROLLED BED ASSEMBLY and published on Jan. 21, 2010 as U.S. Publication No. 2010/0011502, the entireties of both of which are hereby incorporated by reference herein. 
     To assist in the description of the disclosed embodiments, words such as upward, upper, downward, lower, vertical, horizontal, upstream, downstream, top, bottom, soft, rigid, simple, complex and others have and used above to discuss various embodiments and to describe the accompanying figures. It will be appreciated, however, that the illustrated embodiments, or equivalents thereof, can be located and oriented in a variety of desired positions, and thus, should not be limited by the use of such relative terms. 
     Although these inventions have been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present inventions extend beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the inventions and obvious modifications and equivalents thereof. In addition, while the number of variations of the inventions have been shown and described in detail, other modifications, which are within the scope of these inventions, will be readily apparent to those of skill in the art based upon this disclosure. It is also contemplated that various combinations or subcombinations of the specific features and aspects of the embodiments may be made and still fall within the scope of the inventions. Accordingly, it should be understood that various features and aspects of the disclosed embodiments can be combined with, or substituted for, one another in order to perform varying modes of the disclosed inventions. Thus, it is intended that the scope of the present inventions herein disclosed should not be limited by the particular disclosed embodiments described above, but should be determined only by a fair reading of the claims.