as required , detailed embodiments of the present invention are disclosed herein ; however , it is to be understood that the disclosed embodiments are merely exemplary of the invention , which may be embodied in various forms . therefore , specific structural and functional details disclosed herein are not to be interpreted as limiting , but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure . the reference numeral 1 generally refers to a patient transfer sheet device in accordance with the present invention , as shown in fig1 through 6d . the device 1 includes a first sheet 3 ; a second sheet 5 ; dividing means , such as a separable heat lamination or a perforation 7 ; and attachment means , such as a plurality of cuffs 9 . the first sheet 3 is constructed of thin plastic material such as polyethylene or other suitable material . the first sheet 3 has an inner surface 11 with a first coefficient of friction between contacting portions of the inner surface 11 such that a portion of the first sheet 3 glides easily over another portion of the first sheet 3 as a heavy weight , such as a patient 12 , bears thereon , as shown in fig1 . an outer surface 13 of the first sheet 3 has a second coefficient of friction , which is substantially greater than the first coefficient of friction previously described , as the first sheet 3 is pressed against supporting surfaces , such as a first supporting structure 15 , e . g ., an operating table , and a second supporting structure 17 , e . g ., a gurney . the thin sheet 3 is dimensioned such that it generally covers a substantial portion of an upper surface 19 of the first supporting structure 15 and , preferably , approximately one - half of a second upper surface 21 of the second supporting structure 17 , which is spaced alongside the first supporting structure 15 , with a minimal gap 23 between the first supporting structure 15 and the second supporting structure 17 . preferably , the first sheet 3 has sufficient length to support both the head and feet of the patient 12 . the second sheet 5 is constructed of thin material , preferably impervious non - woven , hypoallergenic material similar to that commonly used in hospital operating rooms , or other suitable material . the second sheet 5 is fixedly secured to the first sheet 3 , by adhesive or other suitable means , such that one edge of the second sheet 5 is disposed approximately medially to the first sheet 3 . the length of the second sheet 5 may differ from the length of the first sheet 3 , as shown in fig5 or alternatively , the length of the second sheet 5 may be the same as the length of the first sheet . for some applications , the second sheet 5 may be eliminated . the perforation 7 is generally spaced approximately medially , lengthwise to the second sheet 5 and penetrates both the first sheet 3 and the second sheet 5 . the perforation 7 is structured such that a lateral pull sufficient to transfer the patient 12 from the first supporting structure 15 to the second supporting structure 17 will not cause the perforation 7 to separate . the amount of material remaining between adjacent punctures of the perforation 7 , however , is sufficiently minimal that hands 31 of a person standing at one end of the perforation 7 can grasp the device 1 on each side of the perforation 7 and by pulling outwardly away from the perforation 7 , divide the device 1 along the perforation 7 into a plurality of sections , such as sections 33 and 35 , as illustrated in fig6 d , which can then be easily removed from beneath the patient 12 , without turning or rolling the patient 12 to facilitate such removal . the cuffs 9 are generally fixedly secured to the second sheet 5 and are dimensioned such that corners 39 of the first supporting structure 15 are enclosable thereby . the cuffs 9 may include elastic strips , hook and loop fasteners , or other suitable means to releasably secure the device 1 to the first supporting structure 15 . in an application of the present invention , the device 1 is placed on the first supporting structure 15 such that the second sheet 5 is generally centered in the first upper surface 19 of the first supporting structure 15 and the first sheet 3 is folded back under the second sheet 5 such that end portions 41 extend substantially to one side of the second sheet 5 , as shown in fig6 a . the device 1 is oriented relative to the first supporting structure such that the end portions 41 drape over the side thereof toward the direction the patient 12 will be transferred from the first supporting structure 15 to the second supporting structure 17 . the patient 12 is then placed on the second thin sheet 5 such that the perforation 7 is spaced generally medially lengthwise to the patient 12 . after completing the medical procedure on the patient 12 , a second supporting structure 17 is spaced alongside the first supporting structure 15 and the end portions 41 are extended outwardly from the second sheet 5 such that the end portions 41 span the gap 23 and onto , but generally less than approximately one - half of , the width of the second supporting structure 17 . a person standing on the far side of the second supporting structure 17 then grasps the upper one of the end portions 41 , as designated by the numeral 43 in fig6 c , and pulls such that the patient 12 is transferred from the first supporting structure 15 to the second supporting structure 17 , as shown by the arrow designated by the numeral 44 in fig6 c . the device 1 is then divided into the segments 33 and 35 as hereinbefore described and are urged sideways from the patient 12 , as indicated by the arrows designated by the numeral 45 in fig6 d , and discarded . a first modified patient transfer sheet device in accordance with the present invention is schematically shown in fig7 a through 7e and is generally designated by the reference numeral 50 . many of the characteristics of the first modified patient transfer sheet device 50 are substantially similar to those previously described for the patient transfer sheet device 1 and will not be reiterated here in detail . the first modified patient transfer sheet device 50 includes a first sheet 52 and a second sheet 53 . the first sheet 52 is configured in the form of a band such that the first sheet 52 is foldable with a top layer 54 and a bottom layer 56 . the top layer 54 and the bottom layer 56 terminate at first and second lengthwise folds 58 and 60 such that the first fold 58 is spaced lengthwise along an edge of the second sheet 53 , which is fixedly secured to the top layer 54 . a removal perforation 64 , spaced approximately lengthwise medially to the second sheet 53 , penetrates both the second sheet 53 and the top layer 54 . a first transfer perforation 66 is spaced alongside the second fold 60 and a second transfer perforation 68 penetrates the bottom layer 56 such that the second transfer perforation 68 is spaced generally below the removal perforation 64 . it is to be understood that the first sheet 52 may be folded in such a way that the first fold 58 occurs along the other side of the second sheet 53 , in which case the second transfer perforation 68 would be spaced along the second fold 60 and the first transfer perforation 66 would be spaced generally below the removal perforation 64 . altering the relative locations of the first and second folds 58 and 60 as described provides the ability to prepare the device 50 , prior to placing the patient 70 thereon , such that the patient 70 can be transferred either to his left or to his right without re - orienting the device 50 end - for - end relative to a first supporting structure 72 . after performing a medical procedure on the patient 70 , while positioned on the first supporting structure 72 , a second supporting structure 74 is positioned alongside the first supporting structure 72 with a minimal gap 76 therebetween . the first transfer perforation 66 is then separated and the portions of the first sheet 52 are extended outwardly from the patient 70 , to his right as shown in fig8 b , such that the top layer 54 and the bottom layer 56 span the gap 76 and extend onto , but preferably not more than approximately one - half of , the width of the second supporting structure 74 . the top layer 54 is then pulled laterally away from the patient 70 such that the patient 70 is transferred from the first supporting structure 7 to the second supporting structure 74 , as shown by the arrow indicated by the numeral 77 in fig7 c . if desired , the device 50 may then be separated along the removal perforation 64 and discarded , as hereinbefore described . alternatively , the device 50 may be used to transfer the patient 70 to a third supporting structure 78 , such as a ward bed spaced alongside the second supporting structure 74 to the left of the patient 70 . in that event , the first supporting structure 72 , as shown in fig7 c , would be replaced by the third supporting structure 78 and the device 50 would be separated along the second transfer perforation 68 . ends 79 and 80 resulting from such separation are extended transversely outwardly from the patient 70 to span a gap 81 and , preferably , not more than approximately one - half of , the width of the second supporting structure 74 . the end 79 is then pulled , transferring the patient 70 from the second supporting structure 7 to the third supporting structure 78 , as referenced by the arrow designated by the numeral 82 in fig7 d , across the gap 81 spanned by the end 80 . the second sheet 53 is then divided into two sections 86 and 88 by dividing the second sheet 53 along the $ perforation 64 and removing the sections 86 and 88 , along with portions of the first sheet 52 attached thereto , and the end 80 from beneath the patient 70 , without rolling or lifting the patient 70 , as indicated by the arrows designated by the numeral 90 in fig7 e . a second modified patient transfer sheet device in accordance with the present invention is schematically shown in fig8 a through 8d and is generally designated by the reference numeral - 00 . many of the characteristics of the second modified patient transfer device 100 are substantially similar to those previously described for the devices 1 and 50 herein and will not be reiterated here in detail . the second modified patient transfer sheet device 100 includes a first sheet 102 which is configured in the form of a band 104 having an accordion - fold configuration , and a second sheet 106 , as schematically shown in fig8 a . the first sheet 102 has a top layer 108 , which generally extends just beyond the second sheet 106 to a pair of top folds 110 ; a bottom layer 112 , which generally extends to a pair of bottom folds 114 spaced in close proximity to and generally below the top folds 110 ; and intermediate layers 116 , each extending from one of the top folds 110 to one of the bottom folds 114 and having one of a pair of intermediate folds , 118 and 119 , which are spaced in close proximity to each other and generally below a removal perforation 120 , which penetrates the top layer 108 and the second sheet 106 . the intermediate fold 118 has a lengthwise transfer perforation 122 and the intermediate fold 119 has a lengthwise transfer perforation 124 . a third transfer perforation 126 penetrates the bottom layer 112 and is medially spaced generally below the removal perforation 120 . after completing a medical procedure on a patient 128 placed on the second sheet 106 , the intermediate fold 118 is then extended outwardly from the patient 128 , to his right as shown in fig8 b . loop handles , tabs or the like ( not shown ) may be secured to the first sheet 102 in the vicinity of the intermediate fold 118 to facilitate such extension thereof . after separation of the first sheet 102 along the transfer perforation 122 , sections 130 and 131 resulting from such separation are extended across a gap 132 between a first supporting platform 134 and a second supporting platform 136 . it is to be understood that the patient 128 could have been transferred to his left instead of to his right , a decision which is not required prior to placing the patient 128 on the device 100 . after transferring the patient 128 to the second supporting structure 136 , as indicated by the arrow designated by the numeral 138 in fig8 c , the device 100 may be separated along the removal perforation 120 and the device 100 removed from beneath the patient 128 , without rolling or lifting the patient 128 as hereinbefore described , and discarded . alternatively , a discard portion 140 of the first sheet 102 may be removed in anticipation of subsequently transferring the patient 128 to his left onto another supporting structure , by separating the first sheet 102 along the first transfer perforation 124 and the third transfer perforation 126 . such a subsequent transfer would then be conducted as schematically illustrated in fig7 d and 7e for the device 50 . a third modified patient transfer sheet device 150 in accordance with the present invention is shown in fig9 a through 9g and is generally designated by the reference numeral 150 . many of the characteristics of the third modified transfer sheet device 150 are substantially similar to those previously described for other embodiments herein and will not be reiterated here in detail . the third modified transfer sheet device 150 includes a first sheet 152 , having an accordion - fold configuration as hereinbefore described for the device 100 ; a second sheet 154 fixedly secured to an upper layer 156 of the first sheet 152 ; and a third sheet 158 , having an accordion - fold configuration similar to that of the first sheet 152 and fixedly secured to and spaced generally below the first sheet 152 , as schematically illustrated in fig9 a . one of the advantages of the third modified transfer sheet device 150 is that a decision to transfer a patient 160 can be transferred either to the left or to the right from a first supporting structure 162 to a second supporting structure 164 is not required prior to placing the patient 160 on the device 150 . subsequently , the patient 150 can also be selectively transferred to the left or to the right from the second supporting structure 164 to a third supporting structure 166 . preferably , the first such transfer is conducted with the third sheet 158 and the second such transfer is conducted with the first sheet 152 , as hereinafter described . the first sheet 152 has first and second transfer perforations 168 and 169 situated generally medially lengthwise along first and second intermediate folds 170 and 171 of first and second intermediate layers 172 and 173 . similarly , the third sheet 158 has third and fourth transfer perforations 174 and 175 situated medially lengthwise along third and fourth intermediate folds 176 and 177 of third and fourth intermediate layers 178 and 179 . to transfer the patient 160 to the second supporting structure 164 , the third intermediate fold 176 is extended outwardly from the patient 160 to span a gap 180 between the first supporting structure 162 and the second supporting structure 164 and also span a portion of , but preferably not more than approximately one - half of , the width of the second supporting structure 164 . after separating the third sheet 158 along the third transfer perforation 174 into sections 182 and - 83 , the section 182 is pulled laterally such that the patient 160 is transferred to the second supporting structure 164 , as indicated by the arrow designated by the numeral 184 in fig9 c . the device 150 may then be separated along a first removal perforation 186 and along a second removal perforation 188 , removed from beneath the patient 160 , without rolling or lifting the patient 160 as hereinbefore described , and discarded . alternatively , in anticipation of transferring the patient 160 to a third supporting structure 166 , the third sheet 154 can be separated along the fourth transfer perforation 175 and removed for discarding , as indicated by the arrow designated by the numeral 190 in fig9 b . after spacing the third supporting structure 166 alongside the second supporting structure 164 with a minimal gap 192 therebetween , the first intermediate fold 170 is extended outwardly from the patient 160 such that the first sheet 152 spans the gap 192 and also spans a portion of , but preferably not more than approximately one - half of the width of , the third supporting structure 166 . after separating the first sheet 152 along the first transfer perforation 168 into sections 194 and 195 , the patient 160 is transferred to the third supporting structure 166 by pulling on the section 194 , as indicated by the arrow designated by the numeral 196 in fig9 f . the first sheet 152 and the second sheet 15 are then separated along the first removal perforation 186 and removed from beneath the patient 160 for disposal , as indicated by the arrows designated by the numeral 198 in fig9 g , without rolling or lifting the patient 160 . it is to be understood that while certain forms of the present invention have been illustrated and described herein , it is not to be limited to the specific forms or arrangement of parts described and shown .
an improved patient transfer sheet device includes a thin first sheet , having a low coefficient of friction for contacting inner surfaces thereof and substantially higher coefficients of friction for other surfaces contacting the first sheet , and a thin second sheet , fixedly connected to the first sheet . the device has a plurality of corner cuffs for releasably securing the device to a first supporting structure . a perforation , medially spaced lengthwise of a patient lying on the device , penetrates the first and second sheets such that the device can be divided and removed from under the patient without rolling or lifting the patient . a first modified transfer device provides a thin band having additional lengthwise perforations such that the device can be placed such that a patient can be transferred sidewise in a pre - selected direction and , subsequently , be transferred in the reverse direction . a second modified transfer device provides a thin sheet in an accordion - fold configuration such that the patient can be selectively transferred to either side after being placed on the device . a third modified transfer device provides a thin sheet in an accordion - fold configuration such that the patient can be transferred to either side and , subsequently , be transferred again to either side .