Patent Abstract:
A field stretcher comprising a subject transporting portion, the subject transporting portion comprising a region capable of forming a subject retaining compartment for retaining a subject positioned within the subject transporting portion, is disclosed and described. A method of transporting a subject generally horizontally, is provided, the method comprising providing a field stretcher comprising a subject transporting portion, positioning a subject in the subject transporting portion, and drawing at least a portion of the subject transporting portion about at least a portion of the subject.

Full Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims benefit of priority under 35 U.S.C. §119(e) to the filing date of U.S. Provisional Application 61/084,746, filed on Jul. 30, 2008, which is incorporated herein by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present invention relates to field stretchers, particularly for recovering wounded soldiers from field. 
     BACKGROUND 
     Field stretchers are known in the art and are used for transporting wounded individuals in the field. They differ from medical stretchers used in medical facilities in that they are designed to be lightweight and compact, enabling the field stretcher to be carried about an individual person and a casualty to be moved by a single person. 
     Known field stretchers comprise a simple piece of fabric material upon which an injured person may be placed, then the stretcher dragged to a position of safety. Problems with this type of known stretcher exist in that a wounded individual may roll off the stretcher during transport. Also, in many instances, such stretchers are used to recover soldiers or other casualties from mine fields, having been wounded by a land mine. Often in such cases, the causality&#39;s legs may have been severely injured or removed, and as such, may have a significantly reduced body length. In such scenarios, known field stretchers are inappropriate since they are too large and again promote the incidence of subjects rolling off the stretcher. The inappropriate length of the know field stretchers in these situations dictates that carry handles are not in the optimum place for safe subject transport. 
     SUMMARY 
     It is an object of aspects of the present invention to provide a solution to the above mentioned or other problems. 
     According to a first embodiment, there is provided a field stretcher comprising a subject transporting portion, the subject transporting portion comprising a region capable of forming a subject retaining compartment for retaining a subject positioned within the subject transporting portion. 
     In one aspect of the first embodiment, the field stretcher further comprises one or more handles positioned about the subject transporting portion operable for dragging the stretcher along a surface. 
     In another aspect of the first embodiment, the subject transporting portion has a lower region and preferably an upper region. Preferably, the lower region generally corresponds to a position of a lower portion of a subject&#39;s body, in use. Preferably, the upper region generally corresponds to a position of an upper portion of a subject&#39;s body, in use. 
     In another aspect of the first embodiment, the subject transporting portion is generally elongate and is preferably generally coffin shaped in plan. Preferably, the subject transporting portion comprises one or more handles at or toward an upper end thereof, preferably being the longitudinal terminus of the upper region. 
     In another aspect of the first embodiment, the subject transporting portion comprises one or more handles along sides thereof. Preferably, the handles are arranged in pairs, preferably at opposing sides of the subject transporting portion. 
     In another aspect of the first embodiment, the stretcher further comprises a retaining region forming a part of the subject retaining compartment. 
     In another aspect of the first embodiment, the retaining region may be drawn together with the lower region of the subject transporting portion. 
     In another aspect of the first embodiment, the subject transporting portion may comprise drawing means operable to draw a portion, preferably a portion of the perimeter, of the subject transporting portion. In this manner, a subject retaining compartment may be formed adapted to the particular subject in need of transport. The drawing means may extend around a portion of the perimeter of the subject transporting portion and may extend around a portion of the perimeter of the retaining region. An example of perimeter shortening means is a drawstring. The field stretcher may comprise a drawstring operable to draw the subject transporting portion, thereby forming the subject retaining compartment. The drawstring may extend around a portion of an edge of the subject transporting portion. The drawstring may extend around a portion of the retaining region. 
     In another aspect of the first embodiment, the subject transporting portion may comprise a dual skin, which may have an access therein defining retaining means between the skins. The access may be situated toward an upper region of the subject transporting portion and may be a lateral slit, that is, generally perpendicular to a longitudinal axis of the stretcher. A pad, support, or heat source may be placed between the two skins of the dual skinned subject transporting portion. The subject transporting portion may comprise a manipulation slit therein, which may allow a user to pull the pad, support, or heat source into the stretcher body. The manipulation slit may be situated toward a lower end of the stretcher and may be parallel with a longitudinal axis of the stretcher. 
     In another aspect of the first embodiment, the drawstring may be provided with a toggle to preferably allow the drawstring to be retained in a predetermined drawn position. 
     In another aspect of the first embodiment, at least a portion of the subject transporting portion is formed from a fabric material, preferably an abrasion resistant fabric material. The fabric material may be natural or synthetic. The fabric material may be knitted or woven. An example of a suitable material is Cordura® commercially available from Invista. The fabric material may contain or be coated with an abrasion resistant agent, anti-static agent, a flame-retardant agent, or combinations thereof. 
     In a second embodiment, a method of transporting a subject generally horizontally, is provided. The method comprises providing a field stretcher comprising a subject transporting portion, positioning a subject in the subject transporting portion, and drawing at least a portion of the subject transporting portion about at least a portion of the subject. 
     All of the features contained herein may be combined with any of the above aspects and in any combination. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For a better understanding of the invention, and to show how embodiments of the same may be carried into effect, reference will now be made, by way of example, to the accompanying diagrammatic drawings in which: 
         FIG. 1  shows a prospective view of a field stretcher embodiment of the present invention, showing the bottom surface thereof; 
         FIG. 2  shows a prospective view of the field stretcher embodiment of  FIG. 1 , showing the top surface thereof; 
         FIG. 3  shows a prospective view of an embodiment of the field stretcher of  FIG. 1 , showing the top surface thereof; 
         FIG. 4  shows a prospective view of an embodiment of the field stretcher of  FIG. 1 , showing the top surface thereof; 
         FIG. 5  shows a partial prospective end view of the field stretcher of  FIG. 1 , showing an accessible compartment therein; 
         FIG. 6  shows a partial view of a lower section of the field stretcher of  FIG. 1 ; 
         FIG. 7  shows a prospective view of the field stretcher of  FIG. 1 , including a subject thereon; 
         FIG. 8  shows a prospective view of the field stretcher of  FIG. 1 , depicted in a subject transporting configuration; 
         FIG. 9  shows a enlarged view of the lower portion of the field stretcher of  FIG. 8 , in a subject transporting configuration. 
     
    
    
     DETAILED DESCRIPTION 
     The various aspects of the field stretcher disclosed and described herein are provided for the removal of injured or incapacitated individuals, making it possible to move, or generally horizontally slide, the individual from one place to another. In addition, the various aspects of the field stretcher configuration provide for the containment of individuals who are otherwise likely to roll or slide off a conventional stretcher due to the partial or total loss of one or both lower body appendages. 
     Referring to  FIGS. 1-4  there is provided a field stretcher  102  having a subject transporting portion  104 . The stretcher may preferably be in the form of a dual skinned fabric material in a general sheet form that may be stitched together at predetermined positions about the form. The subject transporting portion is depicted as generally coffin shaped in plan, for example, being an irregular hexagon, to contour the general shape of a human body. In this manner, the subject transporting portion is generally elongate and comprises a lower region  106 , where a lower part of a subject&#39;s body would typically be situated in use, and an upper region  108  where an upper part of a subject&#39;s body would typically be situated, in use. 
     Pairs of handles  110 ,  112  and  114  are situated at edges of the stretcher  102 . A first pair of handles  110  is situated at either side of the subject transporting portion  104  adjacent the lower region  106  thereof. A second pair of handles  112  is situated at either side of the subject transporting portion  104  at the widest part thereof (corresponding generally to the proximity of a subjects shoulders), and a third pair of handles  114  are situated at an upper end of the subject transporting portion  104 , for example, above or in proximity to a subject&#39;s head, when in use. The stretcher may be configured of a dual skin of material comprising an upper skin and lower skin. In this configuration the material may be configured to provide one or more compartments at predetermined positions about the stretcher. Toward the upper region  108  is at least one optional lateral slit  121  in an upper skin of an optional dual skin subject transporting portion and toward the lower region  106  is at least one optional longitudinal slit  123  in the upper skin of the subject transporting portion  104 . 
       FIGS. 2-3  depict alternate arrangements of the slits in the field stretchers  102 A,  102 B, and  102 C, for example, a single slit  121   a  in proximity to the head/shoulder region of a subject, a single slit  121   b  in proximity to the waist/leg region of a subject, and a combination of slits  121   a ,  121   b , as above, in the upper skin of a dual skin field stretcher for providing compartments about the subject as further discussed below.  FIG. 1  depicting surface  103  of the field stretcher, at least a portion thereof that contacts a surface (e.g., earth, concrete, carpet, vegetation, etc.) during transport is preferably of an anti-wear resistant material with anti-static, flame-retardancy, lubricity, or combinations of these properties, or may be a material surface treated to provide one or more of anti-wear resistance, anti-static, flame-retardancy, lubricity, or combinations thereof, to facilitate or improve the ability of the stretcher to transport across the surface or prevent or eliminate burning, ripping, or tearing of surface  103 . The surface of subject transport portion  104 , as shown in  FIGS. 2-4 , that contacts the subject may also be treated, for example, with an anti-infective, an anti-bacterial or combinations thereof. 
     Referring to  FIG. 5 , there is shown an accessible compartment  120  defined between the upper skin  140  and lower skin  150  of the dual skinned subject transporting portion  104  accessible via the lateral slit  121 . Into this compartment may be inserted at least one pad (e.g., thermal pad, mattress, adsorbent pad, or other support structure) (not shown) to increase the comfort of a subject or provide some level of medical assistance to the subject situated thereon. Insertion of the pad (not shown) is made easier by accessing the compartment  120  via the longitudinal slit  123  and pulling the pad (not shown) down into the compartment  120 . The pad may comprise an “instant heat” pak or similar thermally-actuated device to provide warmth, or the pad may be a combination of heating sources and supporting structure or absorbing material. The pad may be secured in place by securing means  125   a ,  125   b , which may be one or more cooperative Velcro patches, buttons, snaps, latches, or similar fasteners. In another aspect, the personal belongings or severed parts of the subject may be contained in the compartment of the stretcher. 
     The lower region  106  comprises a generally upstanding covering portion  117 , which can be seen in detail in  FIG. 6 . As the subject transporting portion  104  is formed from a fabric material, the upstanding covering portion  117  is shown as being folded essentially flat in  FIGS. 2-4 . Around the edge of the covering portion  117  and the lower region  106  of the subject transporting portion  104  is a drawstring  119  housed in lateral slit  121 . The drawstring  119  threaded about the edge  119   a  of the lower region has a toggle  118  thereon situated halfway along the edge of the covering portion  117 . Longitudinal slit  123  allows for the easy insertion of the pad (not shown) as shown and discussed above for  FIG. 6 . 
     Referring to  FIG. 7  there is shown a subject  200  situated on field stretcher  102 . The sides of the stretcher  102  are depicted as pulled up over the sides of subject  200  and the covering portion  117  has been pulled up over the subject&#39;s lower torso. In this configuration the subject may be transported, for example, substantially horizontally. 
     Referring now to  FIGS. 8 and 9 , stretcher  102  is shown having a subject  200  therein with the drawstring  119  drawn so that the lower end of the stretcher  102  (the covering portion  117  and the lower region  106  of the subject transporting portion  104 ) forms an accessible compartment  220  to retain the subject  200 . This is provided, for example, by holding the toggle  118  and pulling the drawstring  119  therethrough. The toggle  118  serves to hold the drawstring  119  in the drawn configuration. 
     A field stretcher made in accordance with the present invention allows a subject to be retained within an accessible compartment  220  of the stretcher  102  and thus when transported, for example by dragging via handles  110 ,  112 ,  114 , possibility of the subject rolling or sliding off the stretcher is prevented or eliminated. Also, as discussed above, in the theatre of war, soldiers often sustain major injuries to their feet and legs and, in severe cases, one or more of the legs may be removed by land mines. In such a scenario, the elongate extent of the field stretcher of the present invention can be significantly reduced to accommodate a person in this condition securely. The field stretcher disclosed and described, has the further advantage that the handles are situated at appropriate predetermined positions with regard to the subject, because the length of the stretcher  102  is adjustable to suit the subject, and in particular, a subject comprised by the loss of one or more lower appendages. 
     All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive. 
     Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features. 
     The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Technology Classification (CPC): 0