Patent Description:
This document relates to fluid handling devices for use in fluid systems. For example, some embodiments described in this document relate to a quick disconnect type of fluid coupling device that inhibits fluid spillage during and after disconnection.

Fluid systems commonly include components such as tubing, couplings, valves, pumps, reservoirs, filters, and the like. Such components can be connected together in a network to define a fluid flow path.

Fluid systems are often used in a medical context. Some examples of fluid systems used in the medical context include urinary drainage systems, wound drainage systems, infusion systems, respiratory systems, anesthesia systems, blood transfusion circuits, kidney dialysis systems, extracorporeal membrane oxygenation systems, extracorporeal circuits for heart/lung bypass, and the like. Some such medical fluid systems include the use of quick disconnect fluid coupling devices.

<CIT> describes a method for forming an aseptic connection. The method includes inserting an end of a sealed fill connector into a receptacle of an aseptic connector assembly; moving a pivot portion of the aseptic connector assembly relative to a body portion of the aseptic connector assembly so as to sever a portion of the fill connector, the pivot portion being at least partially disposed within the body portion; and advancing a conduit portion of the aseptic connector assembly into the fill connector so as to form an aseptic connection therebetween, the conduit portion being at least partially disposed within the pivot portion or the body portion of the aseptic connector assembly after advancing.

This document describes fluid handling devices for use in fluid systems. For example, some embodiments described in this document relate to a quick disconnect type of fluid coupling device that prevents, inhibits, or minimizes fluid spillage during and after disconnection. For example, particular embodiments of these fluid coupling devices can be configured to improve medical fluid handling equipment because the fluid coupling devices can be connected and disconnected (e.g., multiple times) while minimizing fluid spillage. In the context of this disclosure, the term "fluid" includes both gases and liquids.

According claim <NUM>, a fluid handling device includes a first body portion defining a first lumen extending between a first port and a first aperture, and a second body portion defining a second lumen extending between a second port and a second aperture. The first and second body portions are: (i) coupleable with each other and (ii) separable from each other. While the first and second body portions are separated from each other, the first and second apertures are each occluded. While the first and second body portions are coupled with each other, the fluid handling device is configurable in: (a) a first coupled configuration in which an open flow path is defined between the first and second ports and (b) a second coupled configuration in which the first and second apertures are each occluded.

The first body portion is pivotable in relation to the second portion to reconfigure the fluid handling device between the first and second coupled configurations. The fluid handling device may also include a core member pivotably coupled with the second body portion. Pivoting the first and second body portions between the first and second coupled configurations may cause the core member to pivot in relation to each of the first and second body portions. An engagement mechanism between the first body portion and the core member may limit how much the core member can pivot in relation to the first body portion. The fluid handling device may also include a core member movably coupled with the second body portion. The core member may define a central lumen. The open flow path may comprise the central lumen. The open flow path may be linear and unobstructed. While the first and second body portions are separated from each other, each end of the central lumen may be occluded by the second body portion. The fluid handling device may also include a seal between the first body portion and the second body portion. The seal may include a first material in contact with a second material that is softer than the first material. The seal may prevent entrance of bio-contamination into the first and second lumens. The seal may prevent entrance of bio-contamination into the first and second lumens during reconfiguration of the fluid handling device between the first and second coupled configurations.

Particular embodiments of the subject matter described in this document can be implemented to realize one or more of the following advantages. First, in some embodiments the fluid coupling devices described herein are configured to allow fluid flow therethrough, and subsequently to allow the coupling halves to be uncoupled and separated while minimizing spillage of the fluid. Such a low-spillage quick disconnect fluid coupling device can be used while advantageously mitigating contamination caused by spillage of fluids that can be messy or even hazardous (e.g., biohazardous, corrosive, etc.). Associated safety risks and clean-up costs can thereby be reduced or eliminated.

Second, in some embodiments the fluid coupling devices provided herein are configured to convey fluid flow with a minimized amount of pressure drop and flow restriction. For example, some embodiments of the fluid coupling device can be configured for connection to <NUM> (<NUM>/<NUM> inch) inside diameter tubing while also having a pressure drop that is similar to the pressure drop of an equivalent length of <NUM> (<NUM>/<NUM> inch) inside diameter tubing.

Third, in some embodiments, the fluid coupling systems may advantageously provide a user with audible and/or tactile feedback in response to the motions performed for physically connecting and disconnecting the two portions of the fluid coupling devices in relation to each other. Such audible and/or tactile feedback can provide the user with an efficient and conclusive indication or confirmation of the proper function and desired configuration of the fluid coupling devices.

Fourth, some embodiments are designed with fail-safe provisions. For example, the coupling halves of some embodiments are physically prevented from being separated unless the anti-spillage members are in place and active for the prevention of spillage.

Fifth, some embodiments of the fluid coupling devices provided herein are advantageously designed with a robust locking system. That is, when the two halves of the coupling system are operably connected with each other, they are also mechanically locked in place. In some embodiments, to release the lock, special user actions are required (e.g., a latch on the coupling must be depressed). Such a design may reduce the likelihood of unintentional disconnections.

Sixth, some embodiments have a user-friendly design that is intuitive to properly operate. Accordingly, minimal operator training is required, and user mistakes are minimized.

Seventh, the low-spillage quick disconnect devices described herein are designed to be manufacture-able at a low cost. For example, some embodiments include only four components. The components can be molded plastic items in some cases. Moreover, in some embodiments the components can be simply snapped together (manually or automatically) for a low-cost assembly process.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. In addition, the materials, methods, and examples of the embodiments described herein are illustrative only and not intended to be limiting.

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description herein.

Like reference numbers represent corresponding parts throughout.

The low-spillage quick disconnects described herein can be used in a variety of different implementations. For example, referring to <FIG>, in some cases a low-spillage quick disconnect <NUM> as described herein can be used in a medical setting. In the depicted example, the low-spillage quick disconnect <NUM> is being used along a urine drainage line <NUM> between a patient <NUM> and a fluid collection bag <NUM>.

Eventually, the fluid collection bag <NUM> will need to be emptied (e.g., by a nurse, healthcare aide, or other type of patientcare attendant). While the bag <NUM> needs to be emptied, the patient-end of the urine drainage line <NUM> usually needs to stay in place relative to the patient <NUM>. The low-spillage quick disconnect <NUM> can be particularly useful in such a situation.

To disconnect the fluid collection bag <NUM> from being attached to the patient <NUM> by the urine drainage line <NUM>, the low-spillage quick disconnect <NUM> can be opened (e.g., disconnected, separated, or decoupled). In particular, a first body portion <NUM> of the low-spillage quick disconnect <NUM> can be uncoupled from and separated from a second body portion <NUM> of the low-spillage quick disconnect <NUM>. When the body portions <NUM> and <NUM> are separated (as described further below), the low-spillage design features of the low-spillage quick disconnect <NUM> come into use. That is, while body portions <NUM> and <NUM> are separated, apertures of the body portions <NUM> and <NUM> that would otherwise be open are instead occluded to inhibit or prevent fluid spillage from the body portions <NUM> and <NUM>.

Referring to <FIG>, an example embodiment of the low-spillage quick disconnect <NUM> is shown in a first coupled configuration. In this first coupled configuration, an open flow path exists between a first port <NUM> of the first body portion <NUM> and a second port <NUM> of the second body portion <NUM>. While the depicted embodiment of the low-spillage quick disconnect <NUM> includes barbed connections for coupling with a flexible tube or hose, it should be understood that any type of fluid handling connection can be used. For example, connections such as, but not limited to, tube stems, bond ports, a barbed fitting (as shown), a luer fitting, a compression fitting, a quick disconnect fitting, a threaded fitting (internal or external), a sanitary fitting, a pigtail, a T-fitting, a Y-fitting, a bag fitment, and any other suitable type of configuration can be included such that the fluid coupling device <NUM> is suitable for connection to a fluid system as desired. In some embodiments, the low-spillage quick disconnect <NUM> may be supplied with removable caps (not shown), or another type of component, that is releasably coupled with the ends that define the ports <NUM> and/or <NUM>.

Referring to <FIG>, a longitudinal cross-section of the low-spillage quick disconnect <NUM> taken along section line <NUM>--<NUM> (as shown in <FIG>) is illustrated. In this view, the open flow path between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM> is visible. It can also be seen that the open flow path through the low-spillage quick disconnect <NUM> is linear and unobstructed. Hence, the pressure drop and flow resistance through the low-spillage quick disconnect <NUM> is quite minimal.

The cross-sectional view of <FIG> also reveals two other internally-located components of the low-spillage quick disconnect <NUM>. The two other components are a shut-off member <NUM> and a core member <NUM>. The structures and functions of the shut-off member <NUM> and the core member <NUM> are described further below.

Referring to <FIG>, the low-spillage quick disconnect <NUM> can be reconfigured between the first coupled configuration as shown in <FIG> and a second coupled configuration as shown in <FIG>. The body portions <NUM> and <NUM> are movably coupled with each other to facilitate the reconfiguration between the first and second coupled configurations. In fact, a close comparison of the first and second configurations reveals that, in the depicted embodiment, the body portions <NUM> and <NUM> are pivotably or rotatably coupled with each other, and therefore rotatable relative to each other about a central axis <NUM>. The axis <NUM> is perpendicular to the open flow path defined between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM> (while the low-spillage quick disconnect <NUM> is in the first coupled configuration as shown in <FIG> and <FIG>).

In the depicted second coupled configuration, there is not an open flow path defined between the first port <NUM> and the second port <NUM>. Rather, the flow or the potential for flow through the low-spillage quick disconnect <NUM> is, occluded, stopped or blocked when the low-spillage quick disconnect <NUM> is configured in the second coupled configuration.

Referring to <FIG>, a longitudinal cross-section of the low-spillage quick disconnect <NUM> taken along section line <NUM>--<NUM> (as shown in <FIG>) is illustrated. In this view, it can be seen that there is no open flow path between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM>. Rather, the lumen defined by the first body portion <NUM> is occluded by the shut-off member <NUM>, and the lumen defined by the second body portion <NUM> is occluded by the core member <NUM>.

A comparison between the longitudinal cross-sectional views of <FIG> reveals that, while the body portions <NUM> and <NUM> have been rotated in relation to each other by a particular angular amount (e.g., about <NUM> degrees in the depicted embodiment), the core member <NUM> has rotated by less than that particular angular amount (e.g., the core member has rotated by about <NUM> degrees in the depicted embodiment). These functional relationships between the components of the low-spillage quick disconnect <NUM> contribute to the low-spill characteristics of the low-spillage quick disconnect <NUM>, and will be described further below.

Referring to <FIG>, the body portions <NUM> and <NUM> of the low-spillage quick disconnect <NUM> are manually separable from each other. That is, when the low-spillage quick disconnect <NUM> is in the second coupled configuration (e.g., as shown in <FIG> and <FIG>), the body portions <NUM> and <NUM> can be separated from each other by moving them apart from each other along the central axis <NUM>.

One of ordinary skill in the art will readily envision that separated body portions <NUM> and <NUM> can be recoupled to each other in order to reconnect them in a fluid system, and to reestablish fluid flow through the low-spillage quick disconnect <NUM>. Of course, the process of coupling or recoupling separated body portions <NUM> and <NUM> is simply the reverse of the decoupling process.

While the body portions <NUM> and <NUM> are being separated, and while the body portions <NUM> and <NUM> remain separated, fluids in the body portions <NUM> and <NUM> are retained therein (assuming, of course, that tubes connected at ports <NUM> and <NUM> remain in place). In other words, while the body portions <NUM> and <NUM> are separated, spillage of fluid from the body portions <NUM> and <NUM> is inhibited and substantially prevented.

While the body portions <NUM> and <NUM> are separated, the shut-off member <NUM> is retained in a coupled arrangement with the first body portion <NUM>, and the core member <NUM> is retained in a coupled arrangement with the second body portion <NUM>. Accordingly, while the body portions <NUM> and <NUM> are separated, the lumen defined by the first body portion <NUM> is occluded by the shut-off member <NUM>, and the lumen defined by the second body portion <NUM> is occluded by the core member <NUM> (as seen in <FIG>). The occlusion provided by the shut-off member <NUM> and the core member <NUM> inhibits and substantially prevents spillage from the body portions <NUM> and <NUM> while they are separated from each other.

Referring to <FIG>, here an example first body portion <NUM> is shown in isolation from the other components of the low-spillage quick disconnect <NUM>. Accordingly, greater detail of the first body portion <NUM> is now visible.

The first body portion <NUM> defines an internal space <NUM> that is shaped and sized to receive the second body portion <NUM> (<FIG>). Accordingly, the body portions <NUM> and <NUM> can be selectively mated and movably coupled with each other as described in reference to <FIG> and <FIG>.

An annular groove <NUM> is defined circumferentially along an inner wall of the first body portion <NUM> within the internal space <NUM>. The annular groove <NUM> is shaped and sized to releasably engage with, and slidingly mate with, a corresponding annular protrusion located around a circumference of the second body portion (as described further below in reference to <FIG>). Accordingly, when the body portions <NUM> and <NUM> are pushed into engagement with each other, auditory and/or tactile feedback may be generated as a result of the engagement of the annular groove <NUM> and the annular protrusion. Simply stated, the two body portions <NUM> and <NUM> may snap together, for example. Additionally, the engagement of the annular groove <NUM> and the annular protrusion can serve to releasably detain the body portions <NUM> and <NUM> in the second coupled arrangement (<FIG>). Accordingly, separation of the body portions <NUM> and <NUM> (as depicted in <FIG>) necessitates an intentional action by a user of the low-spillage quick disconnect <NUM>.

The first body portion <NUM> also defines an L-shaped slot <NUM>. The L-shaped slot <NUM> is sized and shaped to define a clearance pathway that slidingly receives the fluid handling connection <NUM> (<FIG>) of the second body portion <NUM>. The pathway defined by the L-shaped slot <NUM> facilitates both: (i) the relative movements of the body portions <NUM> and <NUM> between the uncoupled/separated arrangement as shown in <FIG> and the second coupled configuration as shown in <FIG>, and (ii) the relative movements of the body portions <NUM> and <NUM> between the first coupled arrangement as shown in <FIG> and the second coupled arrangement as shown in <FIG>. Additionally, the L-shaped slot <NUM> prevents separation of the body portions <NUM> and <NUM> unless the low-spillage quick disconnect <NUM> is in the second coupled configuration as shown in <FIG>. Accordingly, the L-shaped slot <NUM> prevents separation of the body portions <NUM> and <NUM> unless the lumens defined within the low-spillage quick disconnect <NUM> are occluded. In this manner, the L-shaped slot <NUM> provides a fail-safe feature.

In the depicted embodiment, the terminal end (closed end or dead end) of the L-shaped slot <NUM> is shaped to create a detent position <NUM> where the fluid handling connection <NUM> (<FIG>) of the second body portion <NUM> will snap into place. While the fluid handling connection <NUM> of the second body portion <NUM> is in that detent position <NUM>, the body portions <NUM> and <NUM> are arranged in the first configuration (<FIG> and <FIG>) such that the open flow path exists between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM>. Accordingly, the detent position <NUM> provides auditory and/or tactile feedback that the low-spillage quick disconnect <NUM> is arranged in the first configuration (which operatively allows for fluids to flow therethrough).

The first body portion <NUM> also includes a mechanism that engages with the core member <NUM> (<FIG>). For example, in the depicted embodiment the first body portion <NUM> includes a projection <NUM> (like a mechanical key member) that engages with a corresponding recess <NUM> defined by the core member <NUM> (as described further below in reference to <FIG>). The mechanical interaction between the projection <NUM> and the corresponding recess defined by the core member <NUM> serves to limit how much the core member <NUM> can rotate or pivot in relation to the first body portion <NUM>.

In some embodiments, the first body portion <NUM> (and/or one or more other components of the low-spillage quick disconnect <NUM>) is made of a thermoplastic material. In particular embodiments, the first body portion <NUM> is made of a thermoplastic, such as, but not limited to, polycarbonate, polysulfone, polyether ether ketone, polysulphide, polyester, polyvinylidene fluoride (PVDF), polyethylene, polyphenylsulfone (PPSU; e.g., Radel®), polyetherimide (PEI; e.g., Ultem®), polypropylene, polyphenylene, polyaryletherketone, Acrylonitrile butadiene styrene (ABS), and the like, and combinations thereof. In some embodiments, the first body portion <NUM> (or one or more portions thereof) is transparent or translucent so that internal components and/or fluids are visible. In some embodiments, the first body portion <NUM> (or one or more portions thereof) are overmolded with a second type of moldable material. In some embodiments, the low-spillage quick disconnect <NUM> is entirely metallic-free. That is, in some embodiments no metallic materials are included in the low-spillage quick disconnect <NUM>. In some embodiments, one or more of the components of the low-spillage quick disconnect <NUM> (e.g., the first body portion <NUM>, the second body portion <NUM>, etc.) are made of metals such as, but not limited to, stainless steel, brass, aluminum, beryllium copper, and the like.

In some embodiments, the inner wall <NUM> (or portions thereof) that defines the internal space <NUM> is overmolded or coated with a softer material that seals against the second body portion <NUM> and/or the shut-off member <NUM> (which can each be made of harder materials). For example, one or more portions of the inner wall <NUM> (or the majority thereof, or the entirety thereof) can be overmolded with a softer seal material such as, but not limited to, silicone, fluoroelastomers (FKM), ethylene propylene diene monomer (EPDM), thermoplastic elastomers (TPE), buna, buna-N, thermoplastic vulcanizates (TPV), and the like. In some such embodiments, such a softer seal material is overmolded as an annular band around the aperture <NUM>. Alternatively, some embodiments of the first body portion <NUM> include an o-ring seal member positioned around the aperture <NUM>.

It should be understood that the inclusion of features to create one or more such seals between the first body portion <NUM> and the second body portion <NUM> and/or the shut-off member <NUM> can serve to maintain the sterility of a sterilized low-spillage quick disconnect <NUM> during storage and use. That is, such seal(s) prevents the entrance of bio-contamination between the first body portion <NUM> and the second body portion <NUM> and/or shut-off member <NUM> that could otherwise enter into the first and second lumens defined by the first and second body portions <NUM> and <NUM>. The seal performs that role during storage, and also during reconfiguration of the low-spillage quick disconnect <NUM> between the first and second coupled configurations (as shown in <FIG> and <FIG>).

While the seal(s) described above is comprised of a soft material on the surface of the inner wall <NUM> which abuts against a harder material of the second body portion <NUM> and/or the shut-off member <NUM>, in some embodiments the locations of the soft and hard materials can be reversed. That is, in some embodiments the inner wall <NUM> of the first body portion <NUM> can be a hard material and one or more portions (or an entirety) of surface of the second body portion <NUM> and/or the shut-off member <NUM> can be overmolded with a softer material.

The first body portion <NUM> also defines a first aperture <NUM> which is at an opposite end of the fluid handling connection <NUM> that defines the first lumen extending from the first port <NUM>. When the first body portion <NUM> is separated from the second body portion <NUM> (as shown in <FIG>), the first aperture <NUM> is occluded so that fluid spillage from the first body portion <NUM> is inhibited and substantially prevented.

Referring also to <FIG>, the shut-off member <NUM> is movably positioned within, and remains captured within, the internal space <NUM> so that it can occlude the first aperture <NUM> while the first body portion <NUM> is separated from the second body portion <NUM> (as shown in <FIG>). The first body portion <NUM> defines an annular seal seat <NUM> that slidably receives a correspondingly-sized and shaped seal base <NUM> of the shut-off member <NUM>.

In some embodiments, the first body portion <NUM> includes one or more tabs (not shown) that loosely abut the top surface of the annular seal base <NUM> to mechanically detain the shut-off member <NUM> in the first body portion <NUM>. Indeed, the shut-off member <NUM> and the first body portion <NUM> remain coupled together during use (both while the body portions <NUM> and <NUM> are coupled, and while the body portions <NUM> and <NUM> are separated). In the depicted embodiment, the annular seal base <NUM> defines an optional split <NUM> (e.g., the annular seal base <NUM> is an open C-shape) to facilitate assembly of the shut-off member <NUM> to the first body portion <NUM>.

Extending from the annular seal base <NUM> is a sidewall portion <NUM>. The sidewall portion <NUM> is sized and shaped to releasably engage with a correspondingly-sized and shaped cutout defined by the second body portion <NUM> (as described further below in reference to <FIG>).

The sidewall portion <NUM> includes a sealing projection <NUM>. The sealing projection <NUM> is sized and shaped to releasably engage with the first aperture <NUM> like a plug or a stopper. When the sealing projection <NUM> is engaged with the first aperture <NUM>, a substantially fluid-tight seal is established (assuming an operating pressure that is consistent with the specifications of the particular low-spillage quick disconnect <NUM> being used).

While the depicted embodiment of the shut-off member <NUM> includes the sidewall portion <NUM> that is cantilevered from the annular seal base <NUM>, alternative designs are also envisioned. For example, in some embodiments the sidewall portion <NUM> makes up a portion of a cylinder. That is, additional material is included such that, rather than having a cantilevered sidewall portion <NUM>, the shut-off member <NUM> is shaped as a hollow cylinder and sidewall portion <NUM> is within or part of the wall of that hollow cylinder. Such a cylindrical design may provide advantages such as increased rigidity and shape-stability. In some such embodiments, the sidewall portion <NUM> can be thicker than other portions of the cylinder wall. That way the sidewall portion <NUM> can still mechanically engage with the second body portion <NUM> (as described further below). The optional split <NUM> can still be included in a cylindrical design. In such a case, the optional split <NUM> would be a notch out of the end of the cylinder.

The shut-off member <NUM> can be made of any of the materials described above in reference to the first body portion <NUM>. Alternatively, or additionally, in some embodiments the shut-off member <NUM> (or portions thereof, e.g., by overmolding) is made of materials such as, but not limited to, silicone, FKM, buna, buna-N, EPDM, TPE, TPV, and the like.

Referring to <FIG>, here an example second body portion <NUM> is shown in isolation from the other components of the low-spillage quick disconnect <NUM>. Accordingly, greater detail of the second body portion <NUM> is now visible. The second body portion <NUM> can be made of any of the materials described above in reference to the first body portion <NUM>.

The second body portion <NUM> includes a generally cylindrical body <NUM> that is configured to be releasably received within the internal space <NUM> defined by the first body portion <NUM> as shown in <FIG>. The second body portion <NUM> also includes a fluid handling connection <NUM> that can extend through the L-shaped slot <NUM> of the first body portion <NUM>.

Reference will now be made to the physical features of the second body portion <NUM> that were mentioned above as being releasably engageable with corresponding-sized and shaped features of the first body portion <NUM> or the shut-off member <NUM>. For example, the second body portion <NUM> includes an annular protrusion <NUM> that is shaped and sized to releasably engage with, and slidingly mate with, the annular groove <NUM> of the first body portion <NUM> (<FIG>). Additionally, the second body portion <NUM> includes a cutout <NUM> that is sized and shaped to releasably engage with the sidewall portion <NUM> of the shut-off member <NUM> (<FIG>). The engagement between the cutout <NUM> and the sidewall portion <NUM> ensures that rotations of the second body portion <NUM> in relation to the first body portion <NUM> also cause corresponding rotations of the shut-off member <NUM> in relation to the first body portion <NUM>. That physical relationship between the cutout <NUM> and the sidewall portion <NUM> is visible by comparing the configurations of <FIG> to each other.

While the depicted embodiment of the second body portion <NUM> includes the cutout <NUM>, alternative designs are also envisioned. For example, in some embodiments the area of the cutout <NUM> can be a portion of the generally cylindrical body <NUM> with a thinner wall than other portions of the generally cylindrical body <NUM>. Such a more completely cylindrical design of the second body portion <NUM> may provide advantages such as increased rigidity and shape-stability. Since the area of the cutout <NUM> would have a thinner wall than other portions of the generally cylindrical body <NUM>, mechanical engagement between the second body portion <NUM> and the sidewall portion <NUM> of the shut-off member <NUM> would still be facilitated.

The generally cylindrical body <NUM> of the second body portion <NUM> also defines two apertures: (i) a second aperture <NUM> and (ii) a third aperture <NUM>. Here the second aperture <NUM> and the third aperture <NUM> are referred to as "second" and "third" to distinguish them from the first aperture <NUM> of the first body portion <NUM>, as described above. The second aperture <NUM> is at an opposite end of the fluid handling connection <NUM> that defines the second lumen extending from the second port <NUM>. When the second body portion <NUM> is separated from the first body portion <NUM> (as shown in <FIG>), the second aperture <NUM> is occluded so that fluid spillage from the second body portion <NUM> is inhibited and substantially prevented.

The generally cylindrical body <NUM> of the second body portion <NUM> also defines an internal space <NUM>. The internal space <NUM> is generally cylindrical. The cutout <NUM>, the second aperture <NUM>, and the third aperture <NUM> are open to the internal space <NUM>.

Referring also to <FIG>, the core member <NUM> includes a generally cylindrical body <NUM> that can be movably positioned within internal space <NUM> so that it can occlude the second aperture <NUM> and the third aperture <NUM> while the second body portion <NUM> is separated from the first body portion <NUM> (as shown in <FIG>).

The core member <NUM> can be made of any of the materials described above in reference to the first body portion <NUM>. Alternatively, or additionally, in some embodiments the core member <NUM> (or portions thereof, e.g., by overmolding) is made of materials such as, but not limited to, silicone, buna, buna-N, FKM, EPDM, TPE, TPV, and the like.

In some embodiments, the core member <NUM> can include an annular protrusion <NUM>. The annular protrusion <NUM> can be sized and shaped to releasably engage with, and slidingly mate with, a corresponding annular groove (not visible) that is defined circumferentially around an inner wall of the internal space <NUM> of the second body portion <NUM>. Engagement of the annular protrusion <NUM> within such an annular groove can ensure that the core member <NUM> remains coupled within the internal space <NUM> of the second body portion <NUM> while also being rotatably movable relative to the second body portion <NUM>.

The core member <NUM> defines a third lumen <NUM> that extends laterally fully through the generally cylindrical body <NUM>. Depending on the relative rotational position of the core member <NUM> in relation to the second body portion <NUM>, the third lumen <NUM> of the core member <NUM> can serve as a fluid flow path between the second and third apertures <NUM> and <NUM>. That is, when the third lumen <NUM> is in alignment with the second and third apertures <NUM> and <NUM>, the third lumen <NUM> provides a fluid flow path between the second and third apertures <NUM> and <NUM> (and also between the first and second ports <NUM> and <NUM> which is through an entirety of the low-spillage quick disconnect <NUM>). Such alignment exists while the low-spillage quick disconnect <NUM> is in the first coupled configuration (<FIG> and <FIG>).

When the core member <NUM> is rotated in relation to the second body portion <NUM> such that the third lumen <NUM> is not in alignment with the second and third apertures <NUM> and <NUM>, then the core member <NUM> occludes the second and third apertures <NUM> and <NUM>, and flow through the low-spillage quick disconnect <NUM> is prevented. Such an arrangement exists while the low-spillage quick disconnect <NUM> is in the second coupled configuration (<FIG> and <FIG>), and also while the first and second body portions <NUM> and <NUM> are separated from each other (<FIG>). Moreover, while the third lumen <NUM> is not in alignment with the second and third apertures <NUM> and <NUM>, then the third lumen <NUM> is itself also occluded at each end thereof by the inner wall of the second body portion <NUM>.

The core member <NUM> also defines a recess <NUM>. In the depicted embodiment, the recess <NUM> has a cross-sectional shape that resembles a bow tie. Like a mechanical key within a keyway, the recess <NUM> physically receives the projection <NUM> of the first body portion <NUM> (<FIG>), while defining additional clearance space there between. Since the recess <NUM> is larger than the projection <NUM>, the mechanical interaction between the projection <NUM> and the recess <NUM> allows the core member <NUM> to rotate or pivot in relation to the first body portion <NUM>, but also limits how much the core member <NUM> can rotate or pivot in relation to the first body portion <NUM>.

The recess <NUM> can be designed to allow any desired amount of relative rotation between the core member <NUM> and the first body portion <NUM>. In the depicted embodiment, about <NUM> degrees of relative rotation is allowed by the mechanical interaction of the recess <NUM> and the projection <NUM>. In some embodiments, an allowed relative rotation between the core member <NUM> and the first body portion <NUM> is within a range of about <NUM> degrees to about <NUM> degrees, or about <NUM> degrees to about <NUM> degrees, or about <NUM> degrees to about <NUM> degrees.

Referring to <FIG>, another example embodiment of a low-spillage quick disconnect <NUM> is shown in a first coupled configuration. In this first coupled configuration, an open flow path exists between a first port <NUM> of the first body portion <NUM> and a second port <NUM> of the second body portion <NUM>. While the depicted embodiment of the low-spillage quick disconnect <NUM> includes sleeve, socket, or nipple connections for coupling with a flexible tube or hose, it should be understood that any type of fluid handling connection can be used. For example, connections such as, but not limited to, barbed connections, bond ports, a luer fitting, a compression fitting, a quick disconnect fitting, a threaded fitting (internal or external), a sanitary fitting, a pigtail, a T-fitting, a Y-fitting, a bag fitment, and any other suitable type of configuration can be included such that the fluid coupling device <NUM> is suitable for connection to a fluid system as desired. In some embodiments, the low-spillage quick disconnect <NUM> may be supplied with removable caps and/or plugs (not shown), or another type of component, that is releasably coupled with the ends that define the ports <NUM> and/or <NUM>.

Referring to <FIG>, a longitudinal cross-section of the low-spillage quick disconnect <NUM> taken along section line <NUM>-<NUM> (as shown in <FIG>) is illustrated. In this view, the open flow path between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM> is visible. It can also be seen that the open flow path through the low-spillage quick disconnect <NUM> is linear and unobstructed. Hence, the pressure drop and flow resistance through the low-spillage quick disconnect <NUM> is quite minimal.

The depicted embodiment of the low-spillage quick disconnect <NUM> includes an optional latch mechanism <NUM>. When the low-spillage quick disconnect <NUM> is in the first coupled configuration (as shown in <FIG>), the latch mechanism <NUM> detains the body portions <NUM> and <NUM> from rotating in relation to each other. That is, the body portions <NUM> and <NUM> cannot be rotated relative to each other (e.g., to reconfigure the low-spillage quick disconnect <NUM> to the second coupled configuration as shown in <FIG>) unless the latch mechanism <NUM> is affirmatively acted upon to unlatch or deactivate the latch mechanism <NUM>. Accordingly, the latch mechanism <NUM> can safeguard against an accidental or unintentional closing of the open flow path defined between the first port <NUM> and the second port <NUM> that exists while the low-spillage quick disconnect <NUM> is in the first coupled configuration as shown in <FIG>. When the latch mechanism <NUM> is affirmatively acted upon to deactivate it, then the body portions <NUM> and <NUM> can be pivoted in relation to each other to reconfigure the low-spillage quick disconnect <NUM> from the first coupled configuration as shown in <FIG> to the second coupled configuration as shown in <FIG>. In the depicted embodiment, the latch mechanism is deactivated by depressing a tab, as described further below.

Still referring to <FIG>, in the depicted second coupled configuration, there is not an open flow path defined between the first port <NUM> and the second port <NUM>. Rather, the flow or the potential for flow through the low-spillage quick disconnect <NUM> is, occluded, stopped or blocked when the low-spillage quick disconnect <NUM> is configured in the second coupled configuration.

Referring to <FIG>, a longitudinal cross-section of the low-spillage quick disconnect <NUM> taken along section line <NUM>-<NUM> (as shown in <FIG>) is illustrated. In this view, it can be seen that there is no open flow path between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM>. Rather, the lumen defined by the first body portion <NUM> is occluded by the shut-off member <NUM>, and the lumen defined by the second body portion <NUM> is occluded by the core member <NUM>.

A comparison between the longitudinal cross-sectional views of <FIG> reveals that, while the body portions <NUM> and <NUM> have been rotated in relation to each other by a particular angular amount (e.g., about <NUM> degrees in the depicted embodiment), the core member <NUM> has rotated by less than that particular angular amount (e.g., the core member has rotated by about <NUM> degrees in the depicted embodiment). In addition, while in the depicted embodiment the body portions <NUM> and <NUM> have been rotated in relation to each other by <NUM> degrees and the core member <NUM> has rotated by about <NUM> degrees, the shut-off member <NUM> has rotated by about <NUM> degrees. These functional relationships between the components of the low-spillage quick disconnect <NUM> contribute to the low-spill characteristics of the low-spillage quick disconnect <NUM>, and will be described further below.

While the body portions <NUM> and <NUM> are separated, the shut-off member <NUM> is retained in a coupled arrangement with the first body portion <NUM>, and the core member <NUM> (not visible) is retained in a coupled arrangement with the second body portion <NUM>. Accordingly, while the body portions <NUM> and <NUM> are separated, the lumen defined by the first body portion <NUM> is occluded by the shut-off member <NUM>, and the lumen defined by the second body portion <NUM> is occluded by the core member <NUM> (as seen in <FIG>). The occlusion provided by the shut-off member <NUM> and the core member <NUM> inhibits and substantially prevents spillage from the body portions <NUM> and <NUM> while they are separated from each other.

The first body portion <NUM> defines an internal space <NUM> that is shaped and sized to receive the second body portion <NUM> (<FIG>). Accordingly, the body portions <NUM> and <NUM> can be selectively mated and movably coupled with each other as described in reference to <FIG>.

An annular groove <NUM> is defined circumferentially along an inner wall of the first body portion <NUM> within the internal space <NUM>. The annular groove <NUM> is shaped and sized to releasably engage with, and slidingly mate with, one or more corresponding protrusions located on the second body portion <NUM> (as described further below in reference to <FIG>). In some embodiments, rather than the annular groove <NUM> the first body portion <NUM> includes one or more protrusions that extend inwardly into the internal space <NUM>. In such a case, the second body portion <NUM> includes one or more corresponding grooves or slots that slidingly receive the protrusion(s) (as described further below in reference to <FIG>). Accordingly, when the body portions <NUM> and <NUM> are pushed into engagement with each other, auditory and/or tactile feedback may be generated as a result of the engagement of the annular groove <NUM> and the one or more protrusions of the second body portion <NUM>. Simply stated, the two body portions <NUM> and <NUM> may snap together, for example, and a "click" sound and/or tactile feedback may be generated. Additionally, the engagement of the annular groove <NUM> and the one or more protrusions can serve to releasably detain the body portions <NUM> and <NUM> in the second coupled arrangement (<FIG>). Accordingly, separation of the body portions <NUM> and <NUM> (as depicted in <FIG>) necessitates an intentional action by a user of the low-spillage quick disconnect <NUM>.

As part of the latch mechanism <NUM> (as described above in reference to <FIG>), the first body portion <NUM> includes a first deflectable member 225a and a second deflectable member 225b. The first deflectable member 225a is positioned along one side of the L-shaped slot <NUM> and the second deflectable member 225b is positioned symmetrically along an opposing side of the L-shaped slot <NUM>. The deflectable members 225a-b extend from other portions of the first body portion <NUM> like cantilevered beams. In their natural positions (undeflected), the distance between the free end portions of the deflectable members 225a-b is less than the distance between the ends of the deflectable members 225a-b that are attached to the other portions of the first body portion <NUM>. As the two body portions <NUM> and <NUM> are rotated in relation to each other into the first coupled arrangement as shown in <FIG>, physical interference between the fluid handling connection <NUM> (<FIG>) of the second body portion <NUM> and the deflectable members 225a-b causes the deflectable members 225a-b to flex in opposite directions (like cantilevered beams) outwardly away from the L-shaped slot <NUM>. When the relative rotation between the body portions <NUM> and <NUM> reaches (or nearly reaches) its end of travel where the low-spillage quick disconnect <NUM> is in its first coupled configuration (<FIG>), the fluid handling connection <NUM> clears the free ends of the deflectable members 225a-b and the deflectable members 225a-b snap back to their undeflected positions (as shown). When the deflectable members 225a-b snap back to their undeflected positions, the free end portions of the deflectable members 225a-b physically interfere with and block the fluid handling connection <NUM> from moving out of its position at the end of the L-shaped slot <NUM>. The free end portions of the deflectable members 225a-b thereby detain or latch the low-spillage quick disconnect <NUM> in the first coupled configuration. An affirmative activation of the latch mechanism <NUM> is required to flex the deflectable members 225a-b out of the way of the fluid handling connection <NUM> so that the low-spillage quick disconnect <NUM> can be reconfigured away from the first coupled configuration.

When, after the fluid handling connection <NUM> pass by the deflectable members 225a-b and the deflectable members 225a-b snap back to their undeflected positions (as described above), an audible indication will be created. Accordingly, the deflectable members 225a-b provide auditory and/or tactile feedback that the low-spillage quick disconnect <NUM> is arranged in the first configuration (which operatively allows for fluids to flow therethrough).

The first body portion <NUM> also includes a mechanism that engages with the core member <NUM> (<FIG>). For example, in the depicted embodiment the first body portion <NUM> includes a first projection 226a and a second projection 226b. The projections 226a-b function like a mechanical key member that engages with a corresponding recess <NUM> defined by the core member <NUM> (as described further below in reference to <FIG>). The mechanical interaction between the projections 226a-b and the corresponding recess defined by the core member <NUM> serves to limit how much the core member <NUM> can rotate or pivot in relation to the first body portion <NUM>.

It should be understood that the inclusion of features to create one or more such seals between the first body portion <NUM> and the second body portion <NUM> and/or the shut-off member <NUM> can serve to maintain the sterility of a sterilized low-spillage quick disconnect <NUM> during storage and use. That is, such seal(s) prevents the entrance of bio-contamination between the first body portion <NUM> and the second body portion <NUM> and/or shut-off member <NUM> that could otherwise enter into the first and second lumens defined by the first and second body portions <NUM> and <NUM>. The seal performs that role during storage, and also during reconfiguration of the low-spillage quick disconnect <NUM> between the first and second coupled configurations (as shown in <FIG>).

While the seal(s) described above is/are comprised of a soft material on the surface of the inner wall <NUM> which abuts against a harder material of the second body portion <NUM> and/or the shut-off member <NUM>, in some embodiments the locations of the soft and hard materials can be reversed. That is, in some embodiments the inner wall <NUM> of the first body portion <NUM> can be a hard material and one or more portions (or an entirety) of surface of the second body portion <NUM> and/or the shut-off member <NUM> can be overmolded with a softer material.

The first body portion <NUM> also defines a first aperture <NUM> that is at an opposite end of the fluid handling connection <NUM> that defines the first lumen extending from the first port <NUM>. When the first body portion <NUM> is separated from the second body portion <NUM> (as shown in <FIG>), the first aperture <NUM> is occluded so that fluid spillage from the first body portion <NUM> is inhibited and substantially prevented.

In the depicted embodiment, the first body portion <NUM> includes an undercut area <NUM> (<FIG>) that engages with one or more tab members <NUM> positioned around the inner circumference of the annular seal base <NUM> to mechanically detain the shut-off member <NUM> in the first body portion <NUM> while allowing relative rotation of the shut-off member <NUM> in relation to the first body portion <NUM>. Indeed, the shut-off member <NUM> and the first body portion <NUM> remain coupled together during use (both while the body portions <NUM> and <NUM> are coupled, and while the body portions <NUM> and <NUM> are separated). In some embodiments, the annular seal base <NUM> defines an optional split (e.g., the annular seal base <NUM> is an open C-shape) to facilitate assembly of the shut-off member <NUM> to the first body portion <NUM>.

The sidewall portion <NUM> includes a sealing projection <NUM>. The sealing projection <NUM> is sized, shaped, and positioned to releasably engage with the first aperture <NUM> like a plug or a stopper. The sealing projection <NUM> is engaged with the first aperture <NUM> while the low-spillage quick disconnect <NUM> is configured in the second coupled configuration as shown in <FIG> and <FIG>, and while the first body portion <NUM> is separated from the second body portion <NUM> (as shown in <FIG>). When the sealing projection <NUM> is engaged with the first aperture <NUM>, a substantially fluid-tight seal is established (assuming an operating pressure that is consistent with the specifications of the particular low-spillage quick disconnect <NUM> being used).

The sidewall portion <NUM> also defines an aperture <NUM>. The aperture <NUM> is sized shaped, and positioned to align with the first aperture <NUM> while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration as shown in <FIG> and <FIG>. Accordingly, the aperture <NUM> defines a portion of the open flow path that exists between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration.

The second body portion <NUM> includes a generally cylindrical body <NUM> that is configured to be releasably received within the internal space <NUM> defined by the first body portion <NUM> as shown in <FIG>. The second body portion <NUM> also includes a fluid handling connection <NUM> that can extend through and travel within the L-shaped slot <NUM> of the first body portion <NUM>.

Reference will now be made to the physical features of the second body portion <NUM> that were mentioned above as being releasably engageable with corresponding-sized and shaped features of the first body portion <NUM> or the shut-off member <NUM>. For example, the second body portion <NUM> includes one or more protrusions <NUM> that is/are shaped and sized to releasably engage with, and slidingly mate with, the annular groove <NUM> of the first body portion <NUM> (<FIG>). Additionally, the second body portion <NUM> includes a cutout <NUM> that is sized and shaped to releasably engage with the sidewall portion <NUM> of the shut-off member <NUM> (<FIG>). The engagement between the cutout <NUM> and the sidewall portion <NUM> ensures that rotations of the second body portion <NUM> in relation to the first body portion <NUM> also cause corresponding rotations of the shut-off member <NUM> in relation to the first body portion <NUM>. That physical relationship between the cutout <NUM> and the sidewall portion <NUM> is visible by comparing the configurations of <FIG> to each other.

In the depicted embodiment, the cutout <NUM> is larger than the sidewall portion <NUM> of the shut-off member <NUM> (<FIG>). In other words, while the sidewall portion <NUM> of the shut-off member <NUM> is positioned within the cutout <NUM> of the second body portion <NUM>, spatial clearance exists between the side(s) of the sidewall portion <NUM> and the cutout <NUM>. Accordingly, while rotations of the second body portion <NUM> tend to drive rotations of the shut-off member <NUM> (as a result of the engagement between the cutout <NUM> and the sidewall portion <NUM>), the resulting rotation of the shut-off member <NUM> will be less than the rotation of the second body portion <NUM> in some circumstances. For example, by comparing the configurations of <FIG> to each other, it can be seen that while the second body portion <NUM> was rotated about <NUM> degrees the shut-off member <NUM> was rotated by about <NUM> degrees. The benefit of such an arrangement is that the exposure of the shut-off member <NUM> to the ambient environment is lessened. For example, as shown in <FIG>, the shut-off member <NUM> is completely within the confines of the first body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the second coupled configuration. Additionally, as shown in <FIG>, the shut-off member <NUM> is essentially completely within the confines of the first body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration. Hence, especially while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration, ambient contamination of the shut-off member <NUM> is advantageously prevented or inhibited because the cutout <NUM> of the second body portion <NUM> is larger than the sidewall portion <NUM> of the shut-off member <NUM>.

The generally cylindrical body <NUM> of the second body portion <NUM> also defines an aperture <NUM>. The aperture <NUM> is at an opposite end of the fluid handling connection <NUM> that defines the second lumen extending from the second port <NUM>. When the second body portion <NUM> is separated from the first body portion <NUM> (as shown in <FIG>), the second aperture <NUM> is occluded by the core member <NUM> (as shown in <FIG>) so that fluid spillage from the second body portion <NUM> is inhibited and substantially prevented.

The generally cylindrical body <NUM> of the second body portion <NUM> also defines an internal space <NUM>. The internal space <NUM> is generally cylindrical. The cutout <NUM> and the aperture <NUM> are open to the internal space <NUM>.

The depicted embodiment of the second body portion <NUM> also includes an annular undercut area <NUM> that mechanically engages (e.g., using a snap-in slip fit) with one or more tabs <NUM> of the core member <NUM> (refer to <FIG>), while still allowing for relative rotation between the second body portion <NUM> and the core member <NUM>. Accordingly, the core member <NUM> and the second body portion <NUM> remain rotatably coupled together during use (during both: (i) while the body portions <NUM> and <NUM> are coupled, and (ii) while the body portions <NUM> and <NUM> are separated).

The second body portion <NUM> can also include a hard stop member <NUM> (<FIG>). The hard stop member <NUM> is positioned to abut against a stop surface <NUM> (<FIG>) of the first body portion <NUM> when the low-spillage quick disconnect <NUM> is configured in the second coupled configuration as shown in <FIG>. That is, contact between the hard stop member <NUM> and the stop surface <NUM> establishes the rotational orientation between the first body portion <NUM> and the second body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the second coupled configuration.

Referring also to <FIG>, the core member <NUM> includes a generally cylindrical body <NUM> that can be movably positioned within internal space <NUM> of the second body portion <NUM> so that it can occlude the aperture <NUM> while the second body portion <NUM> is separated from the first body portion <NUM> (as shown in <FIG>).

In some embodiments, the core member <NUM> can include one or more tabs <NUM>. The one or more tabs <NUM> can be sized and shaped to releasably engage with, and slidingly mate with, a corresponding undercut area <NUM> (<FIG>) that is defined within the internal space <NUM> of the second body portion <NUM>. Engagement of the tabs <NUM> with such a corresponding undercut area <NUM> can ensure that the core member <NUM> remains coupled within the internal space <NUM> of the second body portion <NUM> while also being rotatably movable relative to the second body portion <NUM>.

The core member <NUM> defines a lumen <NUM> that extends laterally, fully through the generally cylindrical body <NUM>. In some embodiments, annular protrusions extending laterally from the generally cylindrical body <NUM> define the ends of the lumen <NUM>. Such annular protrusions can help to seal the fluid flow path through the low-spillage quick disconnect <NUM> (while open and/or while closed).

Depending on the relative rotational position of the core member <NUM> in relation to the second body portion <NUM>, the lumen <NUM> of the core member <NUM> can serve as a fluid flow path in conjunction with the aperture <NUM> of the second body portion <NUM> (and in conjunction with the aperture <NUM> of the shut-off member <NUM>). That is, when the low-spillage quick disconnect <NUM> is in the first coupled configuration (<FIG> and <FIG>), an open fluid flow path is defined between the first and second ports <NUM> and <NUM>. That open fluid flow path extends from the first port <NUM> through: (i) the lumen defined by the fluid handling connection <NUM> of the first body portion <NUM>, (ii) the aperture <NUM> of the first body portion <NUM>, (iii) the aperture <NUM> of the shut-off member <NUM>, (iv) the lumen <NUM> of the core member <NUM>, (v) the aperture <NUM> of the second body portion <NUM>, (vi) the lumen defined by the fluid handling connection <NUM> of the second body portion <NUM>, and then to the second port <NUM>.

When the core member <NUM> is rotated in relation to the second body portion <NUM> such that the lumen <NUM> is not in alignment with the aperture <NUM>, then the core member <NUM> occludes the aperture <NUM>, and flow through the low-spillage quick disconnect <NUM> is prevented. Such an arrangement exists while the low-spillage quick disconnect <NUM> is in the second coupled configuration (<FIG> and <FIG>), and also while the first and second body portions <NUM> and <NUM> are separated from each other (<FIG>). Moreover, while the lumen <NUM> is not in alignment with the aperture <NUM>, then the lumen <NUM> is itself also occluded at each end thereof by the inner wall of the second body portion <NUM>.

In the some embodiments, the core member <NUM> also includes one or more annular seals <NUM> partially or fully around the circumference of the core member <NUM>. In the depicted embodiment, two annular seals <NUM> are included on opposite sides of the openings to the lumen <NUM>. The one or more annular seals <NUM> can be made of a suitable type of compliant plastic or rubber.

The core member <NUM> also defines a recess <NUM>. In the depicted embodiment, the recess <NUM> has a cross-sectional shape that resembles a bow tie. Like a mechanical key within a keyway, the recess <NUM> physically receives the projections 226a-b of the first body portion <NUM> (<FIG>), while defining additional clearance space there between. Since the recess <NUM> is larger than the projections 226a-b, the mechanical interaction between the projections 226a-b and the recess <NUM> allows the core member <NUM> to rotate or pivot in relation to the first body portion <NUM>, but also limits how much the core member <NUM> can rotate or pivot in relation to the first body portion <NUM>.

In some embodiments, the core member <NUM> is an injection molded part. In particular embodiments, a core member can be made using a two-shot (overmolded) process.

Referring to <FIG>, a core member <NUM>' that is made using a two-shot (overmolded) process is depicted. The core member <NUM>' includes a generally cylindrical body <NUM>' that can be movably positioned within internal space <NUM> so that it can occlude the aperture <NUM> while the second body portion <NUM> is separated from the first body portion <NUM> (as shown in <FIG>).

The core member <NUM>' can be made of any of the materials described above in reference to the first body portion <NUM>. Alternatively, or additionally, in some embodiments the core member <NUM>' (or portions thereof, e.g., by overmolding) is made of materials such as, but not limited to, silicone, buna, buna-N, FKM, EPDM, TPE, TPV, and the like.

In some embodiments, the core member <NUM>' can include one or more protrusions or tabs <NUM>'. The one or more protrusions or tabs <NUM>' can be sized and shaped to releasably engage with, and slidingly mate with, a corresponding undercut area <NUM> (<FIG>) that is defined within the internal space <NUM> of the second body portion <NUM>. Engagement of the one or more protrusions or tabs <NUM>' within such a corresponding undercut area <NUM> can ensure that the core member <NUM>' remains coupled within the internal space <NUM> of the second body portion <NUM> while also being rotatably movable relative to the second body portion <NUM>.

The core member <NUM>' defines a lumen <NUM>' that extends laterally, fully through the generally cylindrical body <NUM>'. In some embodiments, annular protrusions extending laterally from the generally cylindrical body <NUM>' define the ends of the lumen <NUM>'. Such annular protrusions can help to seal the fluid flow path through the low-spillage quick disconnect <NUM> (while open and/or while closed).

Depending on the relative rotational position of the core member <NUM>' in relation to the second body portion <NUM>', the lumen <NUM>' of the core member <NUM>' can serve as a fluid flow path in conjunction with the aperture <NUM> of the second body portion <NUM> (and in conjunction with the aperture <NUM> of the shut-off member <NUM>). That is, when the low-spillage quick disconnect <NUM> is in the first coupled configuration (<FIG> and <FIG>), an open fluid flow path is defined between the first and second ports <NUM> and <NUM>. That open fluid flow path extends from the first port <NUM> through: (i) the lumen defined by the fluid handling connection <NUM> of the first body portion <NUM>, (ii) the aperture <NUM> of the first body portion <NUM>, (iii) the aperture <NUM> of the shut-off member <NUM>, (iv) the lumen <NUM>' of the core member <NUM>', (v) the aperture <NUM> of the second body portion <NUM>, (vi) the lumen defined by the fluid handling connection <NUM> of the second body portion <NUM>, and then to the second port <NUM>.

When the core member <NUM>' is rotated in relation to the second body portion <NUM> such that the lumen <NUM>' is not in alignment with the aperture <NUM>, then the core member <NUM>' occludes the aperture <NUM>, and flow through the low-spillage quick disconnect <NUM> is prevented. Such an arrangement exists while the low-spillage quick disconnect <NUM> is in the second coupled configuration (<FIG> and <FIG>), and also while the first and second body portions <NUM> and <NUM> are separated from each other (<FIG>). Moreover, while the lumen <NUM>' is not in alignment with the aperture <NUM>, then the lumen <NUM>' is itself also occluded at each end thereof by the inner wall of the second body portion <NUM>.

In the some embodiments, the core member <NUM>' also includes one or more annular seals <NUM>' partially or fully around the circumference of the core member <NUM>'. In the depicted embodiment, two annular seals <NUM>' are included on opposite sides of the openings to the lumen <NUM>'. The one or more annular seals <NUM>' can be made of a suitable type of compliant plastic or rubber. The core member <NUM>' also defines a recess <NUM>'. In the depicted embodiment, the recess <NUM>' has a cross-sectional shape that resembles a bow tie. Like a mechanical key within a keyway, the recess <NUM>' physically receives the projections 226a-b of the first body portion <NUM> (<FIG>), while defining additional clearance space there between. Since the recess <NUM>' is larger than the projections 226a-b, the mechanical interaction between the projections 226a-b and the recess <NUM>' allows the core member <NUM>' to rotate or pivot in relation to the first body portion <NUM>, but also limits how much the core member <NUM>' can rotate or pivot in relation to the first body portion <NUM>.

The recess <NUM>' can be designed to allow any desired amount of relative rotation between the core member <NUM>' and the first body portion <NUM>. In the depicted embodiment, about <NUM> degrees of relative rotation is allowed by the mechanical interaction of the recess <NUM>' and the projection <NUM>. In some embodiments, an allowed relative rotation between the core member <NUM>' and the first body portion <NUM> is within a range of about <NUM> degrees to about <NUM> degrees, or about <NUM> degrees to about <NUM> degrees, or about <NUM> degrees to about <NUM> degrees.

Referring to <FIG>, a system <NUM> includes the low-spillage quick disconnect <NUM> (or any other embodiment of low-spillage quick disconnect described herein) and a mounting patch <NUM>. In some embodiments, the mounting patch <NUM> is an adhesive patch such that the mounting patch <NUM> can be adhered to surfaces such as, but not limited, a patient's skin or clothing.

The first body portion <NUM> of the low-spillage quick disconnect <NUM> can define an attachment feature <NUM>. In the depicted embodiment, the attachment feature <NUM> is a recess. Other types of attachment features <NUM> are also envisioned such as, but not limited to, protrusions, threaded members, clips, and the like. The attachment feature <NUM> can be designed to releasably couple with a corresponding attachment feature <NUM> located on the mounting patch <NUM>. In the depicted embodiment the attachment feature <NUM> is a protrusion that can snap into a releasably detained relationship with the attachment feature <NUM> of the low-spillage quick disconnect <NUM>. In that fashion, the system <NUM> can allow the low-spillage quick disconnect <NUM> to be releasably affixed in a location relative to a patient while the low-spillage quick disconnect <NUM> is in use by the patient.

Referring to <FIG>, a low-spillage quick disconnect <NUM> that uses another type of second body portion <NUM>' is shown. The second body portion <NUM>' can be used with the first body portion <NUM> (e.g., <FIG>) and the shut-off member <NUM> (e.g., <FIG>) to create the low-spillage quick disconnect <NUM>. In some embodiments, the low-spillage quick disconnect <NUM> can include the latch mechanism <NUM>.

The low-spillage quick disconnect <NUM> does not need a core member (such as core member <NUM> or core member <NUM>). In other words, the low-spillage quick disconnect <NUM> can include merely three parts: (i) the first body portion <NUM>, (ii) the shut-off member <NUM>, and (iii) the second body portion <NUM>'. In result, though the shut-off member <NUM> seals the lumen defined by the fluid handling connection <NUM> of the first body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the second coupled configuration (<FIG> and <FIG>) and the uncoupled configuration (<FIG>), a lumen <NUM>' defined by the second body portion <NUM>' is not sealed.

In <FIG>, the second body portion <NUM>' is shown in isolation from the other components of the low-spillage quick disconnect <NUM>. Accordingly, greater detail of the second body portion <NUM>' is now visible. The second body portion <NUM>' can be made of any of the materials described above in reference to the first body portion <NUM>.

The second body portion <NUM>' includes a generally cylindrical body <NUM>' that is configured to be releasably received within the internal space <NUM> defined by the first body portion <NUM> as shown in <FIG>. The second body portion <NUM>' also includes a fluid handling connection <NUM>' that can extend through and travel within the L-shaped slot <NUM> of the first body portion <NUM>.

Reference will now be made to the physical features of the second body portion <NUM>' that can be releasably engageable with corresponding-sized and shaped features of the first body portion <NUM> or the shut-off member <NUM>. For example, the second body portion <NUM>' includes one or more protrusions <NUM>' that is/are shaped and sized to releasably engage with, and slidingly mate with, corresponding features of the first body portion <NUM> (e.g., the annular groove <NUM> as shown in <FIG>). Additionally, the second body portion <NUM>' includes a cutout <NUM>' that is sized and shaped to releasably engage with the sidewall portion <NUM> of the shut-off member <NUM> (<FIG>). The engagement between the cutout <NUM>' and the sidewall portion <NUM> ensures that rotations of the second body portion <NUM>' in relation to the first body portion <NUM> also cause rotations of the shut-off member <NUM> in relation to the first body portion <NUM>. That physical relationship between the cutout <NUM>' and the sidewall portion <NUM> is visible by comparing the configurations of <FIG> to each other.

The second body portion <NUM>' can also include a hard stop member <NUM>' (<FIG>). The hard stop member <NUM>' is positioned to abut against a stop surface <NUM> (<FIG>) of the first body portion <NUM> when the low-spillage quick disconnect <NUM> is configured in the second coupled configuration as shown in <FIG>. That is, as depicted in the cross-sectional view of <FIG>, contact between the hard stop member <NUM>' and the stop surface <NUM> establishes the rotational orientation between the first body portion <NUM> and the second body portion <NUM>' while the low-spillage quick disconnect <NUM> is configured in the second coupled configuration.

In the depicted embodiment, the cutout <NUM>' is larger than the sidewall portion <NUM> of the shut-off member <NUM> (<FIG>). In other words, while the sidewall portion <NUM> of the shut-off member <NUM> is positioned within the cutout <NUM>' of the second body portion <NUM>', spatial clearance exists between the side(s) of the sidewall portion <NUM> and the cutout <NUM>'. Accordingly, while rotations of the second body portion <NUM>' tend to drive rotations of the shut-off member <NUM> (as a result of the engagement between the cutout <NUM>' and the sidewall portion <NUM>), the resulting rotation of the shut-off member <NUM> will be less than the rotation of the second body portion <NUM>' in some circumstances. For example, by comparing the configurations of <FIG> to each other, it can be seen that while the second body portion <NUM>' was rotated about <NUM> degrees the shut-off member <NUM> was rotated by about <NUM> degrees. The benefit of such an arrangement is that the exposure of the shut-off member <NUM> to the ambient environment is lessened. For example, as shown in <FIG>, the shut-off member <NUM> is completely within the confines of the first body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the second coupled configuration. Additionally, as shown in <FIG>, the shut-off member <NUM> is essentially completely within the confines of the first body portion <NUM> while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration. Hence, especially while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration, ambient contamination of the shut-off member <NUM> is advantageously prevented or inhibited because the cutout <NUM>' of the second body portion <NUM>' is larger than the sidewall portion <NUM> of the shut-off member <NUM>.

While the depicted embodiment of the second body portion <NUM>' includes the cutout <NUM>', alternative designs are also envisioned. For example, in the depicted embodiment the area of the cutout <NUM>' includes a portion of the generally cylindrical body <NUM>' that has a thinner wall than other portions of the generally cylindrical body <NUM>'. Such a more partially complete cylindrical design of the second body portion <NUM>' may provide advantages such as increased rigidity and shape-stability. Since the area of the cutout <NUM>' that has a thinner wall than other portions of the generally cylindrical body <NUM>' still allows for mechanical engagement between the second body portion <NUM>' and the sidewall portion <NUM> of the shut-off member <NUM> (as seen in <FIG>).

The lumen <NUM>' extends from the second port <NUM>' of the fluid handling connection <NUM>' to an aperture <NUM>'. Accordingly, while the low-spillage quick disconnect <NUM> is configured in the first coupled configuration (<FIG>) an open flow path extends from the first port <NUM> through: (i) the lumen defined by the fluid handling connection <NUM> of the first body portion <NUM>, (ii) the aperture <NUM> of the first body portion <NUM>, (iii) the aperture <NUM> of the shut-off member <NUM>, (iv) the aperture <NUM>' of the second body portion <NUM>', and (v) the lumen <NUM>' defined by the second body portion <NUM>', and then to the second port <NUM>'.

In some embodiments, an additional feature or component is included to prevent accidental or inadvertent reconfiguration of the low-spillage quick disconnect <NUM> away from the first coupled configuration in which an open flow path exists between the first port <NUM> of the first body portion <NUM> and the second port <NUM> of the second body portion <NUM>. For example, in some embodiments a latch mechanism is included that must be actuated to allow relative rotation of the first and second body portions <NUM> and <NUM>. In some embodiments, a cover component is included that retains the first and second body portions <NUM> and <NUM> in the first coupled configuration (in which the fluid handling connections <NUM> and <NUM> are linearly aligned). In some cases, such a cover component must be removed to allow relative rotation of the first and second body portions <NUM> and <NUM>. In some cases, such a cover component can be integral to the low-spillage quick disconnect <NUM> so that it can be pivoted, deflected, slid, or otherwise moved out of the way to allow relative rotation of the first and second body portions <NUM> and <NUM> while not totally separating the cover component from other portions of the low-spillage quick disconnect <NUM>.

In some embodiments, the fluid handling connections of the body portions described herein can include a flange or physical stop member that positionally limits the installation depth of a tube that is pressed onto the fluid handling connections. Excessive tube installation could cause interference with the rotational action of the low-spillage quick disconnects and flanges or stop members can prevent such a situation.

In some implementations, the assembled the low-spillage quick disconnects described herein (and, potentially, other fluid handling components connected thereto) is sterilized prior to use. Any suitable sterilization method can be used, such as gamma sterilization, ethylene oxide sterilization, e-beam sterilization, Noxilizer™ sterilization, Revox® sterilization, or using an autoclave, and the like. In some cases, the assembled the low-spillage quick disconnect may be coupled with tubing and/or other components prior to sterilization, and the assembly is sterilized in the coupled/assembled configuration.

Claim 1:
A fluid handling device, comprising:
a first body portion (<NUM>; <NUM>) defining a first lumen extending between a first port (<NUM>; <NUM>) and a first aperture (<NUM>; <NUM>); and
a second body portion (<NUM>; <NUM>; <NUM>') defining a second lumen (<NUM>') extending between a second port (<NUM>; <NUM>; <NUM>') and a second aperture (<NUM>; <NUM>; <NUM>'),
wherein the first and second body portions are: i) coupleable with each other and ii) separable from each other,
wherein, while the first and second body portions are separated from each other, the first and second apertures are each occluded, and
wherein, while the first and second body portions are coupled with each other, the fluid handling device is configurable in: a) a first coupled configuration in which an open flow path is defined between the first and second ports and b) a second coupled configuration in which the first and second apertures are each occluded,
wherein the first body portion (<NUM>; <NUM>) is pivotable in relation to the second portion (<NUM>; <NUM>; <NUM>') about a central axis (<NUM>; <NUM>) that is perpendicular to the open flow path to reconfigure the fluid handling device between the first and second coupled configurations, and wherein, while the fluid handling device is in the second coupled configuration, the first and second body portions are separable from each other by moving the first body portion and the second body portion apart from each other along the central axis.