US3526224A - Dressing - Google Patents

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US3526224A
US3526224A US3526224DA US3526224A US 3526224 A US3526224 A US 3526224A US 3526224D A US3526224D A US 3526224DA US 3526224 A US3526224 A US 3526224A
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dressing
film
surface
wound
skin
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Richard M Potts
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Johnson and Johnson
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Johnson and Johnson
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/00004Non-adhesive dressings
    • A61F13/00008Non-adhesive dressings characterized by the material
    • A61F13/00017Non-adhesive dressings characterized by the material synthetic, e.g. polymer based
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00157Wound bandages for burns or skin transplants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00246Wound bandages in a special way pervious to air or vapours
    • A61F2013/00263Wound bandages in a special way pervious to air or vapours vapour permeability >500 g/m2/24h
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00365Plasters use
    • A61F2013/00519Plasters use for treating burn
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00365Plasters use
    • A61F2013/00536Plasters use for draining or irrigating wounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00855Plasters pervious to air or vapours
    • A61F2013/00876Plasters pervious to air or vapours vapour permeability >500 g/mg/24h
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00902Plasters containing means
    • A61F2013/0091Plasters containing means with disinfecting or anaesthetics means, e.g. anti-mycrobic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • A61F2013/51411Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being impervious to fluids but not for air or vapours
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F2013/53445Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31554Next to second layer of polyamidoester

Description

United States Patent [72] Inventor Richard M. Potts I East Brunswick, New Jersey [21] Appl. No. 644,583 [22] Filed June 8, 1967 [45] Patented Sept. 1, 1970 [73] Assignee Johnson & Johnson a corporation of New Jersey [54] DRESSING 4 Claims, 8 Drawing Figs.

[52] U.S.Cl 128/156, 161/1 12 [51] 1nt.C1 A61t'15/00 [50] Field otSearch 128/155, 156,157, 580, 5 17; 161/109, 1 12, 76, 79,150, 151, 88, 89,148; 156/77 [56] References Cited UNlTED STATES PATENTS 2,485,725 10/1949 Francis 161/77 3,253,598 5/1966 Spanel 3,331,728 7/1967 Lane 16l/ll2X 161/112 ABSTRACT: An occlusive dressing designed to act as a synthetic skin, the dressing comprising a laminate of an elastomeric polyurethane film having a water vapor transmission rate within the range of 150 to 500 g/m /24 hours and a sheet of knitted velour fabric. The sheet of velour fabric has a surface of looped pile which is adapted to contact the surface of the wound and into which body tissue will grow during the healing process. The dressing is flexible and the fiber loop surface when placed in intimate contact or engagement with the wound surface eliminates pockets or voids between the dressing surface and the substrate tissue.

Patented Sept. 1, 1970 3,526,224

INVENTOR flaw/=0 M 0775 ATTORNEY DRESSING BRIEF SUMMARY OF THE INVENTION The dressings of the present invention comprise an elastomeric polyurethane film laminated to a knitted fabric velour. The dressings, which are designed to act as a protective skin or membrane over a wound such, for example, as burn wounds, are, because of their structure, both flexible and extensible. They also provide a surface to which underlying wound tissue can adhere while controlling the amount of moisture leaving the surface. The dressings differ from normally conceived dressings in that they are not designed primarily for the absorption of fluids exuding from the wound or solely for protecting the wound from outside contact, but rather are designed to act as an artificial skin permitting natural healing and growth to take place under the dressing. The dressing is then removed after healing, by surgery if necessary. The artificial skin dressing thus protects the wound area permitting normal growth and healing thereunder and prevents excess loss of moisture by the patient through the wound area. The artificial skin dressing may remain in place until the pa- DESCRIPTION OF THE INVENTION For dressings of the synthetic skin type to be satisfactory the same must be sufficiently flexible to allow the surface of the dressing to come into intimate contact with the substrate wound surface over which they are placed. They should also have sufficient flexibility and extensibility to permit movement of the underlying wound surface without separation from the surface of the dressing. Further, the dressings must act as a shield against external contact and/or abrasion thereby giving the protection normally provided by intact skin.

The dressings are of the occlusive type in that the dressings either substantially prevent the escape of moisture from the wound area or permit only a relatively small amount of moisture vapor to escape. Although wound healing has been observed to occur more readily under an occlusive type dressing, one of the difficulties encountered is that in any pocket or open space formed between the dressing surface and the underlying wound tissue bacterial growth becomes excessive. Apparently such areas act as excellent media for the growth of bacteria such as Staphylococcus aureus or Pseudomonas aeruginosa. Where, however, the surface of the dressing is in intimate contact with the underlying tissue and the surface of the dressing is such that adhesion develops in a relatively short time, this adhesion prevents the formation of pockets or voids and bacterial growth between the dressing and the underlying tissue is substantially reduced.

In accordance with the present invention the synthetic skin dressings are prepared by using a film of polyurethane as the moisture barrier in the dressing. Films of this material in thicknesses of one to four mils regulate the escape of moisture from the wound surface in a range such as to give the advantages of occlusive dressings while at the same time permitting some moisture to escape and thus more closely approach the action of normal skin.

The polyurethane films also have the extensible nature of skin in that the same can be readily extended while being slightly elastic so as to return to substantially their original dimension. A still further advantage of utilizing polyurethane film as the moisture barrier in the dressing is that the polyurethane film has the characteristic of binding to itself thus permitting the assembly of two dressing elements through contact and pressure of the film surfaces to provide a composite dressing having a velour surface also on the outside; a structure that is desirable where substantial abrasion of the outer surface may be expected to occur.

In accordance with the present invention the preferred polyurethane films are formed through solvent casting of elastomeric thermoplastic polyurethanes of the block polymer type made from 4,4-diphenylmethane diisocyanate, (MDI), a low molecular weight polyester derived from adipic acid and 1,4-butanediol, and l,4-butanediol. These polymers, which have the following general structure, can be made with varying lengths of polyester and also varying lengths of aromatic blocks:

These materials can be dissolved in tetrahydrofuran, dioxane, cyclohexanone and dimethyl formamide. Many of these polymers are also soluble in acetone and methyl ethyl ketone.

The wound contacting surface of the dressing is formedas previously indicated by the nap surface of a knitted nylon velour in which the fiber on one side of the fabric has been brushed up to form a dense looped pile or nap. This pile provides small interstices or spaces into which the substrate tissue can readily move to produce significant adhesion to the substrate tissue within the first hour of application. Good adherence of the laminate to substrate tissue with virtual freedom from dead spaces or voids is essential to the successful application of a synthetic skin dressing.

Synthetic skin dressings would normally be applied to a wound area using the standard techniques for making living skin grafts which are well known to surgeons skilled in this art. Thus, the synthetic skin dressing may be held in place initially by suitable sutures or skin clips around the periphery as is the usual case in skin grafting, although in some cases the surgeon may choose to use an overlying compress or bandage for this purpose.

The synthetic skin dressing offers several important advantages. It canv be used as a temporary or even semi-permanent replacement for damaged skin. Since it is a manufactured item available in unlimited quantities, it completely avoids the problem of the short supply, or, in the case of extensive burn victims, the completely inadequate supply of autograph skin. The dressing is of a soft, flexible, conformable material which produces a minimum foreign body response. The host tissue will accept it as a completely adequate skin substitute. Due to its small but definite moisture vapor transfer, it allows limited transpiration similar to that of healthy skin while still avoiding the extreme insensible water loss of severe burn victims.

Reference is now made to the drawings wherein are set forth by way of illustration and example certain embodiments of the present invention. Referring to the drawings:

FIG. 1 is a perspective view of a sheet of dressing material made in accordance with the present invention;

FIG. 2 is an enlarged cross-sectional view taken along lines 2-2 of FIG. 1; FIG. 3 is a perspective view of a dressing of the present invention in place on a wound; I FIG. 4 is a microphotograph of a sectional slice througha wound to which a dressing has been applied illustrating the intimate contact of the undersurface of the dressing with the substrate tissue of the wound surface and the growing of tissue into the dressing;

FIG. 5 is a perspective view of a different modification of dressing of the present invention;

FIG. 6 is a cross-sectional view taken along lines 6-6 of the dressing of FIG. 5;

FIG. 7 is a perspective view ofa dressing of FIG. 1 on a carrier sheet; and

FIG. 8 is a cross-sectional view taken along lines 88 of FIG. 7.

Referring to FIG. 1, the dressing 10 comprises a knitted nylon velour fabric 11 having a hooked pile or nap 12 on one side and having laminated to the other side an elastommeric polyurethane film 13.

The synthetic skin dressing 10 is preferably adhered, as best illustrated in FIGS. 7 and 8, to a paper carrier sheet 14 containing a release coating 15 such, for example, as a cured silicone polymer release coating on one surface.

The synthetic skin dressing 10 is carried by the carrier paper 14 through light adhesion of the surface of film 13 to the release coating 15 on the carrier sheet.

Preferably, a portion of the knitted velour fabric 11 extends beyond the film 13 laminated thereto for ready grasping for removal of the dressing 10 from the carrier sheet 14. However, this is not necessary as the dressing 10 can be relatively I easily stripped from the carrier sheet.

In using the synthetic skin dressing the desired dressing size can be cut while still on the support paper 14 or can be cut after removal from such support paper to the size desired by the surgeon. The same is then secured to the wound area, as best illustrated in FIG. 3, by suturing around the edge as indicated at 16. In applying the dressing the edge of the dressing should come up to the edge of the intact skin, fully covering the wound area.

After application of the dressing the underlying tissue 17, during the healing process, is found to grow up into the nap 12 and around and through the loops 18, as best illustrated in FIG. 4. Adherence of the dressing to the underlying wound surface is found to occur within about 1 hour of application after which tissue growth seems to occur in much the same manner as under natural skin.

As previously indicated in some instances, either from the standpoint of appearance, or to give a better wearing surface, it is desirable to have a velour outer covering also present in the synthetic skin dressing when applied. This can be readily accomplished by the surgeon through folding over a section of the synthetic skin dressing illustrated in FIG. 1 onto itself with the two exposed film areas 13 being brought into intimate contact through pressure. If desired, some heat can be employed to obtain a more rapid bond or sealing between the two surfaces. Such a dressing might also be formed by pressing together two separate sheets rather than folding over a single sheet. Such a dressing is illustrated in FIGS. 5 and 6. Referring to FIG. 5, the dressing 19 has a velour 11 on each side. Either surface may be used to cover the wound while the other surface would be the outer surface of the dressing when applied. Such a dressing would comprise in cross section two outer velour surfaces of looped pile 24, the same being secured to the knitted base fabric 21 which contains the polyurethane film 22 bonded thereto, the films 22 in turn are bonded to each other to form a central film portion 23 which controls the occlusive nature ofthe dressing.

If desired, irrigation tubes may be placed between the two film surfaces 22 and the one film 22 which would be on the wound contacting the side of the dressing formed with small perforations. The irrigating tube would be a small perfusion tubing through which a fluid, such as a topical antibacterial fluid, may be introduced so that the same could pass into the bottom layer of the velour facing which is in contact with the wound and thence into contact with the substrate tissue should the surgeon so desire. The bonding characteristics of the polyurethane film, wherein the film is easily bonded to itself, make such film particularly suitable for the construction of such synthetic skin dressings with irrigation channels built therein.

A typical example of a dressing material such as that illustrated in FIG. 1. and its construction is as follows:

A 2 mil polyurethane film is prepared by casting from a solution of a polyester-based polyurethane of the type previously described and sold, for example, under the trade name Eastane 5703. The polymer has a specific gravity of 1.20 (ASTMD-12 27) and the film is cast from a suitable solvent such as methyl ethyl ketone onto a carrier paper having a release coating of a cured silicone resin.

The film so prepared has a M.V.T. of around 300, a Shore A durometer of 70 (ASTMD-676). a tensile strength in excess of 5000 pounds per square inch (p.s.i.)(ASTMD-4l 2), a 300 percent modulus ofless than 500 psi. and an elongation of700 percent. The moisture vapor transmission rate (M.V.T.) is the weight of water lost by evaporation through a film membrane of 25C. over a period of 24 hours. The weight loss is determined by sealing a film over the mouth ofa beaker, containing water. weighing the beaker, letting the beaker stand for 24 hours at atmospheric pressure in an environment having a humidity of 26 percent and temperature of 25C. and then again weighing the beaker to determine weight loss. To the film is laminated a knitted tricot fabric made from 30 denier textured nylon 6.6 yarn. the base of the fabric opposite to the side containing the looped nylon nap being laminated to the film. The lamination of film to velour is preferably carried out before complete drying of the film so that the polyurethane is still tacky with residual solvent. No separate laminating adhesive is required. If desired. however, an alternate method may be used in which the film is completely dried and then laminated with heat under low pressure l 2 psi.) at C. for 2 minutes. The velour knitted tricot fabric is laminated to the film while the same is still on the carrier paper. as best illustrated in FIGS. 7 and 8.

Particular embodiments of the invention have been used to illustrate the same. The invention, however, is not limited to these specific embodimentsv In view of the foregoing disclosure, variations or modifications thereof will be apparent, and it is intended to include within the invention all such variations and modifications except as do not come within the scope of the appended claims.

I claim:

1. A surgical dressing having a wound adhering surface and a moisture controlling film barrier comprising a laminate of a flexible extensible fabric having a fiber pile on one side thereof formed offibers extending outwardly from the surface of said fabric and a flexible elastomeric polyurethane block polymer film adhered to the other side of said fabric. said polymer film having a water permeability rate of 150 to 500 grams per square meter per 24 hours and said fiber pile forming the wound adhering surface of said film, the extending fibers of said pile providing small interstices or spaces into which wound tissue, when the dressing is applied, can readily move to provide adhesion between said dressing and the underlying wound surface.

2. A dressing of claim 1 wherein said elastomeric polyurethane is a block polymer made from 4,4-diphenylmethane diisocyanate and 1,4-butanediol.

3. A dressing of claim 1 wherein said elastomeric polyurethane block polymer film is laminated to the fabric side of a knitted velour fabric, the nap side of said knitted velour fabric forming the wound adhering surface of said dressing.

4. A dressing of claim 3 wherein said dressing comprises a laminate consisting essentially of a knitted velour fabric, a polyurethane film, a polyurethane film and a knitted velour fabric. the polyurethane film portion of the laminate being in the center thereof and the outer surface of said dressing being formed of the nap of said knitted velour fabrics.

US3526224A 1967-06-08 1967-06-08 Dressing Expired - Lifetime US3526224A (en)

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896802A (en) * 1974-04-19 1975-07-29 American Cyanamid Co Flexible flocked dressing
US3903882A (en) * 1974-04-19 1975-09-09 American Cyanamid Co Composite dressing
DE2631909A1 (en) * 1975-07-15 1977-02-10 Massachusetts Inst Technology Multilayer membrane and their use as synthetic skin
FR2342718A1 (en) * 1976-03-01 1977-09-30 Levine Norman Forming synthetic skin dressing for wounds
US4215686A (en) * 1979-04-06 1980-08-05 The United States Of America As Represented By The Secretary Of The Navy PCL Fabric/film laminate
EP0091800A1 (en) * 1982-04-08 1983-10-19 SMITH & NEPHEW plc Surgical adhesive dressing
EP0107915A1 (en) * 1982-10-02 1984-05-09 Smith and Nephew Associated Companies p.l.c. Surgical dressing
EP0114581A1 (en) * 1982-12-17 1984-08-01 SOGIMI S.r.l. Reactive polymers for dermal and transdermal therapy
USRE31887E (en) * 1968-07-09 1985-05-14 T. J. Smith & Nephew Limited Moisture-vapor-permeable pressure-sensitive adhesive materials
WO1985003444A1 (en) * 1984-02-03 1985-08-15 Medinvent S. A. A body tissue replacement product and a method of producing the product
WO1985003563A1 (en) * 1984-02-03 1985-08-15 Mellsjoe Carl Gustaf Heat exchanger
EP0171411A1 (en) * 1984-02-03 1986-02-19 Medinvent Sa A multilayered prosthesis material and a method of producing same.
WO1986002843A1 (en) * 1984-11-08 1986-05-22 WALLSTÉN, Hans, Ivar A method of producing a mono- or multilayered prosthesis material and the material hereby obtained
US4614787A (en) * 1984-11-13 1986-09-30 Thermedics, Inc. Drug dispensing wound dressing
US4638043A (en) * 1984-11-13 1987-01-20 Thermedics, Inc. Drug release system
US4727868A (en) * 1984-11-13 1988-03-01 Thermedics, Inc. Anisotropic wound dressing
US4751133A (en) * 1984-11-13 1988-06-14 Thermedics, Inc. Medical patches and processes for producing same
US4798201A (en) * 1983-04-13 1989-01-17 Smith And Nephew Associated Companies P.L.C. Surgical adhesive dressing
USRE32991E (en) * 1984-11-13 1989-07-18 Thermedics, Inc. Drug dispensing wound dressing
US4880690A (en) * 1984-11-13 1989-11-14 Thermedics, Inc. Perfume patch
US4995382A (en) * 1981-02-13 1991-02-26 Smith And Nephew Associated Companies Limited Wound dressing, manufacture and use
US5010883A (en) * 1983-12-24 1991-04-30 Smith & Nephew Associated Companies Plc Surgical dressing
US5059424A (en) * 1989-11-01 1991-10-22 Ndm Acquisition Corp. Hydrogel wound dressing product
US5106629A (en) * 1989-10-20 1992-04-21 Ndm Acquisition Corp. Transparent hydrogel wound dressing
US5115801A (en) * 1990-05-02 1992-05-26 Ndm Acquisition Corp. Hydrogel burn dressing product
US5204110A (en) * 1990-05-02 1993-04-20 Ndm Acquisition Corp. High absorbency hydrogel wound dressing
US5352216A (en) * 1989-10-26 1994-10-04 Alcare Co., Ltd. Stretch fabric for medical use
US5761743A (en) * 1996-06-28 1998-06-09 Marmon Holdings, Inc. Finger cot and method of manufacturing finger cot
US20050034731A1 (en) * 2003-08-13 2005-02-17 Rousseau Robert A. Surgical wound closure device
US20050034732A1 (en) * 2003-08-13 2005-02-17 Rousseau Robert A. Surgical wound closure device
US20060210960A1 (en) * 1990-09-12 2006-09-21 Lifecell Corporation, A Texas Corporation Method for processing and preserving collagen-based tissues for transplantation
US7358284B2 (en) 1998-06-19 2008-04-15 Lifecell Corporation Particulate acellular tissue matrix
US20110034887A1 (en) * 2009-08-10 2011-02-10 Arctic Ease, LLC Cooling products and methods

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31887E (en) * 1968-07-09 1985-05-14 T. J. Smith & Nephew Limited Moisture-vapor-permeable pressure-sensitive adhesive materials
US3896802A (en) * 1974-04-19 1975-07-29 American Cyanamid Co Flexible flocked dressing
US3903882A (en) * 1974-04-19 1975-09-09 American Cyanamid Co Composite dressing
DE2631909A1 (en) * 1975-07-15 1977-02-10 Massachusetts Inst Technology Multilayer membrane and their use as synthetic skin
FR2332863A1 (en) * 1975-07-15 1977-06-24 Massachusetts Inst Technology Membrane useful as multi-layer synthetic skin
US4060081A (en) * 1975-07-15 1977-11-29 Massachusetts Institute Of Technology Multilayer membrane useful as synthetic skin
FR2342718A1 (en) * 1976-03-01 1977-09-30 Levine Norman Forming synthetic skin dressing for wounds
US4051848A (en) * 1976-03-01 1977-10-04 Levine Norman S Synthetic skin wound dressing
US4215686A (en) * 1979-04-06 1980-08-05 The United States Of America As Represented By The Secretary Of The Navy PCL Fabric/film laminate
US4995382A (en) * 1981-02-13 1991-02-26 Smith And Nephew Associated Companies Limited Wound dressing, manufacture and use
EP0091800A1 (en) * 1982-04-08 1983-10-19 SMITH & NEPHEW plc Surgical adhesive dressing
WO1983003549A1 (en) * 1982-04-08 1983-10-27 Smith And Nephew Associated Companies P.L.C. Surgical adhesive dressing
US4595001A (en) * 1982-04-08 1986-06-17 Smith And Nephew Associated Companies P.L.C. Surgical adhesive dressing
US4747401A (en) * 1982-04-08 1988-05-31 Smith And Nephew Associated Companies P.L.C. Surgical adhesive dressing
US4657006A (en) * 1982-10-02 1987-04-14 Smith And Nephew Associated Companies P.L.C. Surgical dressing
EP0107915A1 (en) * 1982-10-02 1984-05-09 Smith and Nephew Associated Companies p.l.c. Surgical dressing
EP0114581A1 (en) * 1982-12-17 1984-08-01 SOGIMI S.r.l. Reactive polymers for dermal and transdermal therapy
US4798201A (en) * 1983-04-13 1989-01-17 Smith And Nephew Associated Companies P.L.C. Surgical adhesive dressing
US5010883A (en) * 1983-12-24 1991-04-30 Smith & Nephew Associated Companies Plc Surgical dressing
EP0171411A1 (en) * 1984-02-03 1986-02-19 Medinvent Sa A multilayered prosthesis material and a method of producing same.
WO1985003563A1 (en) * 1984-02-03 1985-08-15 Mellsjoe Carl Gustaf Heat exchanger
EP0171411B1 (en) * 1984-02-03 1989-11-02 Medinvent S.A. A multilayered prosthesis material and a method of producing same
US4770664A (en) * 1984-02-03 1988-09-13 Mendinvent S.A. Multilayered prosthesis material and a method of producing same
WO1985003444A1 (en) * 1984-02-03 1985-08-15 Medinvent S. A. A body tissue replacement product and a method of producing the product
WO1986002843A1 (en) * 1984-11-08 1986-05-22 WALLSTÉN, Hans, Ivar A method of producing a mono- or multilayered prosthesis material and the material hereby obtained
US4834747A (en) * 1984-11-08 1989-05-30 Medinvent S.A. Method of producing a multilayered prosthesis material and the material obtained
US4751133A (en) * 1984-11-13 1988-06-14 Thermedics, Inc. Medical patches and processes for producing same
USRE32991E (en) * 1984-11-13 1989-07-18 Thermedics, Inc. Drug dispensing wound dressing
US4638043A (en) * 1984-11-13 1987-01-20 Thermedics, Inc. Drug release system
US4614787A (en) * 1984-11-13 1986-09-30 Thermedics, Inc. Drug dispensing wound dressing
US4727868A (en) * 1984-11-13 1988-03-01 Thermedics, Inc. Anisotropic wound dressing
US4880690A (en) * 1984-11-13 1989-11-14 Thermedics, Inc. Perfume patch
US5106629A (en) * 1989-10-20 1992-04-21 Ndm Acquisition Corp. Transparent hydrogel wound dressing
US5352216A (en) * 1989-10-26 1994-10-04 Alcare Co., Ltd. Stretch fabric for medical use
US5059424A (en) * 1989-11-01 1991-10-22 Ndm Acquisition Corp. Hydrogel wound dressing product
US5115801A (en) * 1990-05-02 1992-05-26 Ndm Acquisition Corp. Hydrogel burn dressing product
US5204110A (en) * 1990-05-02 1993-04-20 Ndm Acquisition Corp. High absorbency hydrogel wound dressing
US20060210960A1 (en) * 1990-09-12 2006-09-21 Lifecell Corporation, A Texas Corporation Method for processing and preserving collagen-based tissues for transplantation
US5761743A (en) * 1996-06-28 1998-06-09 Marmon Holdings, Inc. Finger cot and method of manufacturing finger cot
US7358284B2 (en) 1998-06-19 2008-04-15 Lifecell Corporation Particulate acellular tissue matrix
US8272386B2 (en) * 2003-08-13 2012-09-25 Ethicon, Inc. Surgical wound closure device
US20050034732A1 (en) * 2003-08-13 2005-02-17 Rousseau Robert A. Surgical wound closure device
US20050034731A1 (en) * 2003-08-13 2005-02-17 Rousseau Robert A. Surgical wound closure device
US20110034887A1 (en) * 2009-08-10 2011-02-10 Arctic Ease, LLC Cooling products and methods

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