Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3528416 A
Publication typeGrant
Publication dateSep 15, 1970
Filing dateNov 6, 1967
Priority dateNov 6, 1967
Publication numberUS 3528416 A, US 3528416A, US-A-3528416, US3528416 A, US3528416A
InventorsLawrence J Chamberlain
Original AssigneeLawrence J Chamberlain
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Protective bandage
US 3528416 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent [72] Inventor Lawrence J. Chamberlain 6856 W. Gunnison, Harwood Heights, Chicago, Illinois 60656 [21] Appl. No. 680,652 [22] Filed Nov. 6, 1967 [45] Patented Sept. 15, 1970 [54] PROTECTIVE BANDAGE 3 Claims, 5 Drawing Figs.

[52] U.S.Cl... 128/154 [51] Int. Cl A6lf 15/00 [50] Field of Search 128/155 157, 149, 153, 154

[56] References Cited UNITED STATES PATENTS 2,599,523 6/1952 Dorr 128/153 2,888,013 5/1959 Levitt 128/153 3,062,210 11/1962 Scholl 128/156 Primary Examiner-L.W. Trapp Attorney- Harbaugh, Thomas and Bruce K. Thomas ABSTRACT: A bandage having a flat, resilient air-permeable, liquid-impermeable membrane with a supporting peripheral flanged edge on one side adapted to adhere to the skin of a patient and provide an enclosure for the wound which is waterproof and allows air to pass to and from the enclosure so that healing is promoted. The membrane of the bandage is constructed of a resilient, foamed plastic material which has interstices that are pervious to air and impervious to liquids. Other embodiments are disclosed including the use of a medicated gauze overlay for the wound which is temporarily held in place within the enclosure of the bandage.

Patented Sept. 15, 1970 3,528,416

I/V VEN 7'01? LAWRENCE J. CHAMBERLAIN I By Mix-" Attorney PROTECTIVE BANDAGE BACKGROUND OF THE INVENTION Most wounds or abrasions of the skin heal best in the presence of air under sanitary conditions including the prevention of the accumulation of moisture or body fluids about the wound. The healing process is aided by immobilization of the member. It is not always possible or practical .to provide the optimum combination of healing conditions for a wound. The use of gauze or absorbent bandages is a compromise which protects the wound for a sufficient time to start the healing process and maintain medicinal compositions thereagainst as a further aid to healing. Cloth bandages become soiled and must be regularly replaced if the healing process extends over any length of time. It is exceedingly difficult and awkward to wash or bathe a member without soiling or wetting the bandage with consequent loss of sanitary conditions for the wound. Although an absorbent pad is often a necessary part of the treatment of a wound, the meansby which it may be afflxed thereto are not always practical, comfortable or convenient.

Various forms of strip bandages having adhesive tabs are available that represent an improvement over the cloth bandage. These bandages are individually wrapped, have non-adhering protective strips on the adhesive layers and have a gauze pad intermediate the ends to cover the wound. Macro perforations are provided in the back side of the strip opposite the gauze pad for the purpose of admitting air. In some forms of bandages the gauze pad is itself encased in a thin plastic sheet having perforations therethrough to allow limited access of air and prevent its adhesion to the wound. All of these forms of unitized bandages are subject to damage and contamination in the presence of water, e.g. during bathing or washing.

The instant invention concerns a form of plastic cover for a wound or for a gauze covered wound which is easily applied, gives permanent protection from moisture and does not prevent the passage of air to and from the enclosed area. The device of this invention does not adhere to dirt, flexes with the movements of the bandaged member and provides an encasement for the wound and medication which is impervious to all contaminants but air. The device of this invention does not have a stiffened crown, hinges or side corrugations to provide both protection and flexibility as in some prior art devices qualifying as wound protectors. The instant invention overcomes these andother drawbacks of the prior art devices.

SUMMARY OF THE INVENTION The instant invention concerns primarily the use of a foamed plastic enclosure, formed in such a manner as to have interstices of small diameter which allow the passage of air but are too small in diameter to allow the passage of liquids. The

enclosure has a depending adhesive edge or flangetherearound, adapted or shaped so as to be positioned over a wound with the edges contiguous to the skin around the wound in a sealed peripheral arrangement. By these means as air enclosure is formed about the wound which prevents the ingress of water, may be used to hold a medicated gauze piece upon the wound and may be subjected to washing without loss of the protective seal.

Accordingly, it becomes a primary object of this invention to provide an enclosing plastic seal for a wound or bandaged area which is characterized by its ability to provide protection from destruction or invasion by liquid media, offer some protection from mechanical shock, and is practical, economical, easy to use, and long lasting. These and other objects of this invention will be described or become apparent as the specification proceeds.

DESCRIPTION OF THE DRAWINGS An embodiment of this invention is shown in the drawings wherein:

FIG. 1 is a top plan view of one form of bandage having a rectangular form;

FIG. 2 is a cross-sectional view taken along lines 2-2 of FIG. 1;

FIG. 3 is a fragmentary view in cross-section of the bandage of this invention applied to a wound and retaining thereon a medicated gauze;

FIG. 4 is a top plan view of another form'of bandage of this invention; and

FIG. 5 is a fragmentary cross-sectional view taken along the lines 5-5 of FIG. 4.

THE PREFERRED EMBODIMENT Referring to the drawings, particularly FIGS. 1 and 2, there is shown a unitzed bandage 10 of a rectangular shape having a peripheral depending flanged edge 12 and a connecting membrane wall or cover 14 therebetween. The outer edge of the flange 12 as indicated at 16 has a pressure sensitive adhesive layer thereon for attachment to the skin around a .wound.

In FIG. 3 the bandage 10 is shown attached around a wound 18 in the skin 20 of a patient and holding within the enclosure 22 a medicated gauze 24 against the wound. In this embodiment the wall 14 is in a flexed position illustrating the ability of the bandage of this invention to flex with the skin and remain attached thereto. Also the bandage may be formed and molded with the cover wall 14 in a somewhat loose configuration whereby it encompasses. a raised position when applied to the skin. The bandage 10 can be lifted at one end to remove or replace the medicated gauze as needed.

In FIG. 4 the bandage 10 is circular and is formed in a flattened configuration for use over a larger wound. FIG. 5 shows the bandage 10 affixed to the skin 20 of a patient to form the enclosure 22 over the wound 18 by meansof the membrane-like cover wall 14'.

Although the drawings are not to scale, they show that the flanged edges 12 are thicker than the wall 14. The relationship of these relative thicknesses is subject to some variation. In general, the wall 14. will be about 0.01 to 0.1 inch in thickness while the flangel2 will be about 0.2 to 0.4 inch in thickness. Also, the height of the bandage represented by the lines A-B in FIG. 2 is subject to variation and may be about 0.2 inch to 0.75 inch or more. With'the higher bandages the thickness of the flange will be about the maximum of the foregoing dimensions;

The bandage .of this invention is formed of a foamed sheet plastic having low waterabsorption properties in which the interstices are concinuous, that is, extend, connect, or communicate between'the enclosure 22 and the outside of the bandage. This interstitial communication can also extend through the side flanges 12. For thispurpose the bandage is formed by molding a foamed plastic composition such as polyvinyl chloride, certain .phenolics, acrylics, celluloses, polystyrene and polyethylene under conditions'to allow rapid expansion under atmospheric pressure. This causes uneven cell structure and a large percentage of interconnecting cells or interstices. Cellular polyethylene exhibits good abrasion,rchemical resistance, flexibility,- toughness, lightness of weight, low moisture absorption, high resistivity in cellular form to be suited for this purpose. Cellular polyethylene is produced by dispersing a chemical blowing agent intimately into the resin and subsequently causing this thermally. sensitive agent 'to liberate gas at a relatively rapid rate to rupture the bubbles formed. This is carried out in an extruder with the application of heat as the material enters the die forming the bandage. By proper adjustment of the heat and pressure the product will have a smooth surface'and an interconnected cell structure as opposed to the usual unicellular structure. Operation of the extruder and mold in the upper range of molding conditions will produce the desired lack of uniformity in bubble size, interconnected ruptured bubbles forming interstices therethrough. These conditions are attained by setting the barrel and head at temperatures of about 300 to 350F. respectively, and measuring the density and porosity of the molded bandage. The barrel and head temperatures are then raised in increments of about 25F until the density of the product is about 0.47 or lower.

Similarly, cellular phenolics having cells which are elongated in the direction of expansion can be formed during the blowing process and the sheets cut across the grain to expose the interstices; A Bakelite foaming resin composition known as BVR18763 having the following formulation of proprietary products can be used:

FOAMIN G RESIN EVE-18763 The components of BVR- 18763 are combined and thoroughly mixed in an agitator-equipped container in order to incorporate air. When the volume has increased about 20 percent in the container, the mixture and the hardener BHR- -l8769 is added in a ratio of about 67 cc. of hardener per pound of BVR-l8763 formulation. Violent agitation is applied for a short time, e.g.l--5 seconds, and the mixture is poured into the mold having the desired volumetric shape to form the flanged bandage of this invention.

Although the term foamed or expanded plastics generally means a resinous material having a completely uniform porous or cellular structure, these materials can be formed with non-uniform porous interconnected interstitial structures by carrying out the foaming processes in a manner to rupture some if not all of the cells into an interconnected form. Such plastics as polyvinyl chloride, polyvinyl acetal,

polyvinyl esters, urea-formaldehyde, melamine-formaldehyde phenol-formaldehyde, polystyrene, cellulose acetate, polyesters and polyurethanes made from polyesters and isocyanates can be used in this manner. Although the chemical resistance of these resins may vary and also their flexibilities, etc., each can be used to form a molded bandage of this invention. A preferred plastic material for this purpose is a proprietary product of the 3M Corporation known as Micro-Pore. Various methods can be used to form the interstices required in the bandage of this invention all of which are applicable to the gas, chemical, aeration, soluble solid, bulk filler and low boiling solvent methods of forming foamed or expanded plastics.

Other proprietary products that can be used are Corfam",

Mille Pore and the vinyl Porvic". A water repellant coating e.g. a silicone, can be applied to those expanded plastics which are not sufficiently water repellant.

Any pressure sensitive adhesive which is adapted for use on surgical bandages and strip bandages can be used for the layer 16. Such products may be based on GR-S type X-40 rubber, GR-S type X-272 rubber, poly-2-ethylbutyl acetate, the copolymerization of 60 parts of n-butyl acrylate and n-hexyl acrylate with 40 parts of methylacrylate, polyvinyl acetate, polyvinyl butyral, stabilized rubber-like polyvinylisobutyl ether (Op panol C) and stabilized high mol. wt. vinyl n-butyl ether polymers. These latter can be compounded with rosin esters, zinc oxide, viscous liquid polyvinylisobutyl ethers (e.g. lgevin 560), with or without a hydrocarbon solvent to form the surgical type pressure, sensitive adhesive layer 16.

A feature of this invention IS the adaptibihty of the bandage to a number of different and convenient uses. The bandage can be formed in various sizes sufficient to cover large wounds or very small cuts. The pad 24 can be a plain sterile gauze adapted to stop the flow of blood or may contain a pain reliever or antiseptic composition. The bandage can be packaged in sterile wax or plastic coated paper packets with separate sterile pads of gauze therein for use as desired. The packet containing the bandages and gauze pads can be properly labelled as to the medicant contained on the pad. The bandages can be conveniently carried on the person or in a purse or luggage and applied anywhere at any time. This eliminates the need for keeping supplies of medicants available for emergency or general use.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that details of the construction shown may be altered or omitted without departing from the spirit of the invention as defined by the following claims.

Iclaim:

1. A protective bandage consisting of:

a. a unitary flat flexible resilient member formed of expanded plastic as a single molded unit;

b. with an integral depending continuous peripheral flange along one side;

0. said resilient member and said flange having interconnected air permeable and water impermeable interstices therethrough;

d. a layer of pressure sensitive adhesive on the outer edge of said flange; and

e. whereby adherence of said bandage to the skin of a patient by means of said adhesive layer forms a protective flexible enclosure thereupon.

2. A protective bandage in accordance with claim 1 in which said flat resilient member comprises an expanded plastic of the group consisting of polyvinyl chloride, polystyrene and polyethylene formed under conditions that rupture the continuity of bubbles therein to produce a moisture barrier having air transmissive interstices communicating therethrough.

3. A protective bandage in accordance with claim 2 in which said plastic is polyethylene.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3779369 *Jul 11, 1972Dec 18, 1973Lang JArt paint saver
US3782377 *Sep 7, 1971Jan 1, 1974Illinois Tool WorksSterile plastic shield
US4616643 *Jul 31, 1985Oct 14, 1986Jung Ha YDisposable ear protector
US4648391 *Nov 18, 1985Mar 10, 1987Carbomedics, Inc.Stabilizer for percutaneous medical devices
US5060662 *Jul 6, 1990Oct 29, 1991Farnswoth Iii Kenneth FOpen air bandage
US5062433 *Jan 16, 1990Nov 5, 1991Hospital For Joint DiseasesProtector pad
US5074847 *Apr 5, 1990Dec 24, 1991Century Plastics, Inc.Needle shield with transparency maintaining coating
US5080661 *Apr 18, 1991Jan 14, 1992Hollister IncorporatedFixation pin entry site dressing and method
US5395675 *Oct 5, 1992Mar 7, 1995Altholz; Charles K.Protective covering for select areas of the surface anatomy of the body
US5545128 *Jun 5, 1995Aug 13, 1996Beth Israel HospitalBone fracture prevention method
US5599290 *Nov 20, 1992Feb 4, 1997Beth Israel HospitalBone fracture prevention garment and method
US5817145 *Nov 21, 1994Oct 6, 1998Augustine Medical, Inc.Wound treatment device
US5947914 *Dec 29, 1997Sep 7, 1999Augustine Medical, Inc.Wound covering
US5954680 *Jan 21, 1997Sep 21, 1999Augustine Medical, Inc.Near hyperthermic heater wound covering
US5964721 *Oct 14, 1998Oct 12, 1999Augustine Medical, Inc.Wound covering
US5964723 *Jan 21, 1997Oct 12, 1999Augustine Medical, Inc.Normothermic tissue heating wound covering
US5986163 *Jan 21, 1997Nov 16, 1999Augustine Medical, Inc.Normothermic heater wound covering
US6010527 *Nov 6, 1997Jan 4, 2000Augustine Medical, Inc.Wound treatment device
US6013097 *Nov 21, 1995Jan 11, 2000Augautine Medical, Inc.Wound treatment device for attachment to skin
US6045518 *Mar 18, 1999Apr 4, 2000Augustine Medical, Inc.Normothermic heater wound covering
US6071254 *Mar 18, 1999Jun 6, 2000Augustine Medical, Inc.Near hyperthermic heater wound covering
US6093160 *Apr 11, 1997Jul 25, 2000Augustine Medical, Inc.Flexible non-contact wound treatment device
US6093468 *Mar 14, 1997Jul 25, 2000The Procter & Gamble CompanyFlexible lightweight protective pad with energy absorbing inserts
US6110197 *Apr 11, 1997Aug 29, 2000Augustine Medical, Inc.Flexible non-contact wound treatment device with a single joint
US6113561 *Mar 18, 1999Sep 5, 2000Augustine Medical, Inc.Normothermic tissue heating wound covering
US6164279 *May 17, 1999Dec 26, 2000Tweedle; Jack A.Wound protecting device
US6213966Jan 27, 2000Apr 10, 2001Augustine Medical, Inc.Normothermic tissue heating wound covering
US6217535Jan 27, 2000Apr 17, 2001Augustine Medical, Inc.Normothermic heater wound covering
US6241697Oct 4, 1999Jun 5, 2001Augustine Medical, Inc.Wound covering
US6241698Jan 27, 2000Jun 5, 2001Augustine Medical, Inc.Near hyperthermic heater wound covering
US6248084Nov 4, 1999Jun 19, 2001Augustine Medical, Inc.Wound treatment device
US6264622Mar 9, 1999Jul 24, 2001Augustine Medical, Inc.Normothermic heater wound covering
US6267740Feb 29, 2000Jul 31, 2001Augustine Medical, Inc.Flexible non-contact wound treatment device with a single joint
US6293917Nov 4, 1999Sep 25, 2001Augustine Medical, Inc.Wound treatment device for attachment to skin
US6406448Dec 26, 2000Jun 18, 2002Augustine Medical, Inc.Normothermic heater covering for tissue treatment
US6407307Jan 29, 2001Jun 18, 2002Augustine Medical, Inc.Near hyperthermic heater covering
US6419651Jan 29, 2001Jul 16, 2002Augustine Medical, Inc.Normothermic heater covering
US6423018Feb 7, 2001Jul 23, 2002Augustine Medical, Inc.Normothermic tissue heating wound covering
US6465708Jan 29, 2001Oct 15, 2002Augustine Medical, Inc.Covering
US6468295Mar 23, 2001Oct 22, 2002Augustine Medical, Inc.Treatment device
US6580012Apr 11, 2000Jun 17, 2003Augustine Medical, Inc.Flexible non-contact wound treatment device
US6605051May 31, 2002Aug 12, 2003Augustine Medical, Inc.Near hyperthermic tissue treatment
US6685681Nov 29, 2000Feb 3, 2004Hill-Rom Services, Inc.Vacuum therapy and cleansing dressing for wounds
US6752794Nov 27, 2001Jun 22, 2004Hill-Rom Services, Inc.Vacuum therapy and cleansing dressing for wounds
US6800074Nov 29, 2000Oct 5, 2004Hill-Rom Services, Inc.Wound treatment apparatus
US6840915May 28, 2002Jan 11, 2005Arizant Healthcare Inc.Normothermic tissue treatment
US6855135May 13, 2002Feb 15, 2005Hill-Rom Services, Inc.Vacuum therapy and cleansing dressing for wounds
US6921374Jul 18, 2002Jul 26, 2005Arizant Healthcare Inc.Tissue treatment by normothermic heating
US6987209Nov 8, 2002Jan 17, 2006Arizant Healthcare Inc.Flexible non-contact wound treatment device
US7022113Jul 11, 2002Apr 4, 2006Hill-Rom Services, Inc.Control of vacuum level rate of change
US7122046Sep 24, 2002Oct 17, 2006Arizant Technologies LlcTreatment device
US7195624Dec 20, 2002Mar 27, 2007Hill-Rom Services, Inc.Vented vacuum bandage with irrigation for wound healing and method
US7276051Aug 6, 1999Oct 2, 2007Hill-Rom Services, Inc.Wound treatment apparatus
US7338482Dec 20, 2002Mar 4, 2008Hill-Rom Services, Inc.External catheter access to vacuum bandage
US7534927Dec 20, 2002May 19, 2009Hill-Rom Services, Inc.Vacuum bandage packing
US7678090Nov 24, 2004Mar 16, 2010Risk Jr James RWound treatment apparatus
US7723560Dec 20, 2002May 25, 2010Lockwood Jeffrey SWound vacuum therapy dressing kit
US7763000Jul 6, 2004Jul 27, 2010Risk Jr James RWound treatment apparatus having a display
US7794438Jun 11, 2007Sep 14, 2010Alan Wayne HenleyWound treatment apparatus
US7867206Sep 19, 2003Jan 11, 2011Kci Licensing, Inc.Vacuum therapy and cleansing dressing for wounds
US7896856Dec 20, 2002Mar 1, 2011Robert PetrosenkoWound packing for preventing wound closure
US7896864Mar 12, 2007Mar 1, 2011Lockwood Jeffrey SVented vacuum bandage with irrigation for wound healing and method
US7910791May 15, 2001Mar 22, 2011Coffey Arthur CCombination SIS and vacuum bandage and method
US7927318Sep 20, 2005Apr 19, 2011Risk Jr James RobertWaste container for negative pressure therapy
US7928281Oct 9, 2007Apr 19, 2011Arizant Technologies LlcWound covering
US7931651Mar 30, 2007Apr 26, 2011Wake Lake University Health SciencesExternal fixation assembly and method of use
US7988680Feb 4, 2005Aug 2, 2011Kci Medical ResourcesVacuum therapy and cleansing dressing for wounds
US8021348Sep 5, 2006Sep 20, 2011Kci Medical ResourcesWound treatment apparatus
US8168848Dec 20, 2002May 1, 2012KCI Medical Resources, Inc.Access openings in vacuum bandage
US8246592Nov 13, 2009Aug 21, 2012Kci Medical ResourcesVacuum therapy and cleansing dressing for wounds
US8267960Jan 9, 2009Sep 18, 2012Wake Forest University Health SciencesDevice and method for treating central nervous system pathology
US8350116Dec 4, 2008Jan 8, 2013Kci Medical ResourcesVacuum bandage packing
US8377016Jan 10, 2007Feb 19, 2013Wake Forest University Health SciencesApparatus and method for wound treatment employing periodic sub-atmospheric pressure
US8454603Apr 26, 2011Jun 4, 2013Wake Forest University Health SciencesExternal fixation assembly and method of use
US8540687Aug 20, 2010Sep 24, 2013Kci Licensing, Inc.Wound treatment apparatus
US20100203108 *Feb 12, 2010Aug 12, 2010Nitto Denko CorporationPatch and patch preparation
EP2223686A2Feb 10, 2010Sep 1, 2010Nitto Denko CorporationPatch and patch preparation
WO1985001439A1 *Sep 21, 1984Apr 11, 1985Dawn Cynthia BrownWaterproof coverings
Classifications
U.S. Classification128/888
International ClassificationA61F13/15, A61F13/00
Cooperative ClassificationA61F2013/00855, A61F2013/00246, A61F13/8405, A61F2013/51411, A61F15/008, A61F2013/00165, A61F2013/00825, A61F13/00, A61F2013/530802, A61F2013/00731
European ClassificationA61F15/00P, A61F13/00