Патент USA US3054409код для вставки
Sept. 18, 1962 c. P. MEEK 3,054,404 SKIN GRAF'T APPLICATOR Filed Aug. 14, 1961 ' /0 2 f1‘ 7. .Z. a 5 4v INVEN TOR. BY H TTOE/VE Y5 ij?ii?ei grates Fatenr fine 3,954,4d4 Patented Sept. 18, 1962 2 3,054,494 SKIN GRAFI‘ APPLICATUR Cicero P. Meek, 105 Jackson Drive, Aiken, S.C. Filed Aug. 14, 1961, Ser. No. 131,434 4 Claims. (Cl. 128-—260) This invention relates to a skin graft applicator, a method of making the same, and a method of applying material is preferably cloth which may be easily and effectively sterilized although the invention is not limited thereto and other suitable ?exible sheet materials may be found and employed. ' In forming the applicator the sheet 2 is ?rst folded in an obvious manner to form a ?rst pleat 4 extending there across and pressed snugly against the upper face of the sheet 2. A second pleat 6 is then folded in the material a skin graft to a patient. 2 in a direction transverse to the ?rst pleat 4 and which The purpose of the present invention is to provide a 10 includes the folds of the ?rst pleat. As shown, the method and means for applying skin graft material to a pleat 6 extends at right angles to the pleat 4. This rela predetermined area on a patient whereby the material is properly and e?iciently distributed over the desired area in sufficient quantity to effect growth of new skin on the tionship is preferred although obviously the angular rela tionship need not be exactly as shown. After the second pleat 6 is folded across the material, patient and employing only a minimum quantity of live 15 a third pleat 8 is formed adjacent the ?rst pleat 4 and skin from a donor. parallel thereto, which pleat extends across the second According to applicant’s method a small quantity of pleat 6 and includes the layers thereof within its folds. live skin from a donor is cut into small squares or pieces As shown, the second pleat 8 and subsequent pleats are of other shape and is mixed with an appropriate carrier folded to lie on the same face of the sheet material 2 material to form a spreadable mixture. It is desirable and to extend in the same direction thereover. This that this spreadable mixture be applied to the patient’s body in spaced, relatively small, quantities which start to grow and spread to cover the entire area. Applicant employs an applicator means comprising a sheet of ?ex— relationship, however, is not essential since the pleat 8 (FIG. 3) could with equal facility be folded in the opposite direction to extend toward the pleat 4, if de-~ ible material, preferably cloth, folded and pleated in 25 sired, so long as it does not entirely cover the ?rst pleat. After the pleat 8 is formed, a fourth pleat 10 is folded such a manner that small discrete and normally spaced areas on one face of the sheet are placed in contiguous relation. The skin graft material is then spread, in a thin layer, over the folded portion of the sheet to cover all of the discrete areas. The sheet is then stretched paraliel and adjacent to the pleat 6 and extending across ‘both pleats 4 and 8. Thereafter additional pleats are folded in the same manner, alternating in parallelism to ?rst pleat 4 and second pleat 6, until the structure of FIG. 1 is produced. Obviously, the number of pleats to its unfolded condition, which separates the skin graft and size of the sheet material 2 may be any value de material into relatively small but regularly spaced por sired to give a cross-pleated area of the desired size. tions distributed uniformly over a face of the unfolded As is obvious from FIGS. 1 and 3, the cross-pleated sheet. The applicator is then applied to the patient’s area of the sheet 2 exposes only discrete and contiguous body with the spaced portions of skin graft material 35 area portions 12 of the upper surface of original sheet 2. innermost and the material is thus transferred to the area The pleats having been formed at right angles and alter where the skin graft is desired. The sheet material may nately and in a sense interlock with each other which be left in position and serve as a temporary bandage until the material has started to grow and adheres to prevents inadvertent or accidental unfolding, whereby It is therefore an object of the present invention to the structure remains in the form shown in FIG. 1 until forcibly stretched to extended position. It is preferred that the pleats be permanently creased, as by pressing provide a skin graft applicator and method of high efficiency and simplicity and which effects a proper and uniform distribution of skin graft material over the de By reference to FIG. 2, it will be seen that the small discrete surface portions 12 are uniformly and evenly the patient’s tissues, after which it may be removed and the area treated or rebandaged as desired. sired area. with a hot iron. 45 distributed over the surface of sheet 2 when the latter is stretched to its unfolded condition. The surface por tions 12 are spaced apart when the sheet is stretched but are contiguous when cross-pleated, as in FIG. 1. Still another object is to provide a novel method of In use, a previously prepared skin graft material, com making a skin graft applicator embodying the present 50 prising small particles of donor skin and a suitable car invention. rier is spread over the cross-pleated area of the appli A further object is to provide a novel method of cator of FIG. 1 to completely cover the same and thereby grafting skin over a predetermined area on a patient’s cover each of the areas 12. Thereafter, the appliactor body. is stretched to the unfolded condition of FIG. 2 where Additional objects and advantages will become ap upon the layer of skin graft material is separated into parent to those skilled in the art as the description pro small rectangular portions, each covering one of the ceeds with reference to the accompanying drawings areas 12, which effects a uniform distribution of the ma wherein: terial over the applicator sheet and enables a skin graft FIG. 1 is a plan view of an applicator embodying the to be made over a much larger area than encompassed present invention, and ready for use; by the cross-pleated portion of FIG. 1. FIG. 2 is a plan view of the applicator of FIG. 1 Finally, the applicator is applied to the patient’s body in the early stages of folding the same to the desired in the manner previously set forth to place the skin graft condition, and; Another object of the invention is to provide a novel applicator for achieving the objectives of the invention. FIG. 3 is a fragmentary enlarged, sectional view through material in proper position against the patient’s tissues to adhere thereto and to grow and form new skin. 65 FIGS. 1 and 2. The alternate cross-pleating described with reference The drawings herein illustrate a preferred form of to FIG. 1 is, as stated, the preferred method of forming the applicator as seen on any one of the lines 3-—3 of the invention although, as will be pointed out, the appli the applicator. However, all pleats of one set may be initially formed in the set and thereafter the sheet may be folded to form all of the pleats of the second set ex material 2 is folded to form two sets of parallel pleats, 70 tending transversely thereto. Such an applicator may each set extending transversely of the other set. The be used in the same manner and with the same results cator may be formed in other ways. Referring ?rst to FIG. 2, a sheet of suitable ?exible 3,054,404 3 t 42 extending thereacross and including the layers of said ?rst pleat in its folds; folding a third pleat across ‘said material, adjacent and parallel to said ?rst pleat and ex as the one described in detail, although it has more tend ency to unfold or open by itself. Other folding sequences are possible and other forms of pleats than those speci?cally shownherein may be employed without departing from the scope of applicant’s' tending across said second pleat; folding a fourth pleat across said material adjacent and, parallel to said second pleat and extending across said ?rst'and third'pleats; invention. and folding additional pleats in said material, alternately , While a limited ‘number of speci?c embodiments of the invention are described herein, the same are merely illustrative and other forms may be resorted to Within the scope of the appended claims. I claim: parallel to said ?rst and second pleats, respectively until -* a desired area of pleated material is formed. 10 4. The method of applying a skin graft, comprising the steps of: folding a sheet of material to position nor ' mally spaced discrete surface portions of one face there of in contiguous relation; spreading a layer of skin graft material, comprising small particles of donor skin, on parallel pleats; said sets of pleats extending transversely said contiguous surface portions; unfolding said sheet of to each other whereby to expose only spaced discrete 15 material to separate said surface portions whereby the portions of a face of said ?exible material, said portions skin graft material thereon is separated into spaced por being in contiguous relation when said sheet is pleated as tions on one face of said unfolded sheet; and applying described; the layers of material comprising said pleats said one face against a donee’s body to thereby transfer being free of securement to each other whereby said said spaced portions of skin graft material to said donee. pleated sheet may be pulled to unpleated ?at condition wherein said discrete portions are spaced apart in non References Cited in the ?le of this patent contiguous relation. UNITED STATES PATENTS 2. 'A skin graft applicator as de?ned in claim 1 where v1. A skin graft applicator comprising; a sheet of ?ex- I ible material folded and creased to de?ne two ‘sets. of in the pleats of at least one set include Within their folds 2,583,341 the overlying layers of material de?ning pleats of the 25 2,716,407 other set, whereby the pleats of said sets are temporarily interlocked to prevent inadvertent; unfolding thereof. ' 3. The method of forming a skin graft applicator, Reese __-_' ____________ _.. Jan. 22, 1952 Glickman ___________ __ Aug. 30, 1955 OTHER REFERENCES “Paper-Backed Postage Stamp Skin Grafts in the Treat comprising the steps of: folding a sheet of ?exible ma terial to form a ?rst pleat thereacross; folding a second ment Of Burns,” Elliott and Grow. pleat across said material, transverse to said ?rst pleat, 55, 128-3055. Copy in Division '