# US 7,396,976 B2 · Easy-to-peel securely attaching bandage

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- Number: US 7,396,976 B2
- Document ID: US7396976B2
- Status: Granted
- Kind: B2
- Application number: 11/408,502
- Filed: 2006-04-21
- Published: 2007-10-25
- Granted: 2008-07-08
- Earliest claimed: 2006-04-21
- Assignees: I Did It, Inc.
- Inventors: Marni Markell Hurwitz; Dave Narasimhan; Ernest D. Buff
- Web page: https://patentgrep.com/patent/US7396976B2

## CPC

- A61F 13/0203: with fluid retention members
- A61L 15/58: Adhesives
- Y10T 156/1002: with permanent bending or reshaping or surface deformation of self sustaining lamina
- A61F: FILTERS 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 (dental prosthetics A61C)
- A61L: METHODS 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 (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A bandage remains securely attached to the skin of a wearer during extended exposure to arid, humid or wet conditions. The bandage is readily removed from the attached condition upon application of pressure to its exterior surface. Adhesive portions of the contain pockets or microcapsules filled with an adhesive-inactivating ingredient. The pockets are formed in the backing layer. Microcapsules, if present, are incorporated in the adhesive. The adhesive inactivating ingredient comprises oil from vegetable source, mineral source or fatty acids. The wearer ruptures the pockets or microcapsules by applying pressure to the bandage above the adhesive portions. The adhesive-inactivating ingredient is thereby released at the skin-adhesive interface, permitting an easy, pain-free removal of the bandage.

## Claims

### Claim 1

A bandage, comprising:
a. a backing layer;
b. a plurality of portions of the backing layer containing an adhesive appointed for contact with skin of a bandage wearer;
c. a plurality of pockets containing an adhesive-inactivating ingredient disposed in the adhesive-containing portions of the backing layer;
d. said pockets being operative to rupture upon application of pressure or scratching by the bandage wearer, thereby releasing said adhesive-inactivating ingredient;
e. said adhesive-inactivating ingredient, upon release, being delivered at the skin contacting interface of said adhesive, reducing adhesive bond strength and enabling pain-free removal of said bandage;
f. a central wound-contacting absorbent pad bonded by hot melt glue or strong adhesive to said backing layer; and
g. wherein said backing layer is embossed with pockets, filled with said adhesive-inactivating ingredient and sealed with a second polymeric layer prior to the application of said adhesive.

### Claim 2 (depends on 1)

A bandage as recited by claim 1, wherein the adhesive is selected from a group consisting of acrylic based, dextrin based, and urethane based adhesives, and adhesives based on natural and synthetic elastomers.

### Claim 3 (depends on 1)

A bandage as recited by claim 1, wherein the adhesive releasing ingredient is a member selected from the group consisting of vegetable oil, olive oil, safflower oil, cotton seed oil, peanut oil, soybean oil, caster oil, sesame oil, mineral oil, liquid paraffin or fatty acids, and mixtures thereof.

### Claim 4 (depends on 1)

A bandage as recited by claim 1, wherein said pockets have a volume ranging from about 0.01 cc to 0.5 cc and are spaced apart by a distance ranging from about 0.01 cm to 0.2 cm.

### Claim 5

A method for producing an easy-to-peel, securely attaching bandage, comprising the steps of:
a. selecting a first polymeric layer;
b. embossing said first polymeric layer to form a plurality of pockets therein;
c. filling said pockets with an adhesive-inactivating ingredient;
d. selecting a second polymeric layer;
e. spreading said second polymeric layer over said first polymeric layer to cover said filled pockets;
f. bonding said second polymeric layer to said first polymeric layer to form filled pockets of adhesive-inactivating ingredient having a backing layer; and
g. applying skin-contacting adhesive to portions of said backing layer, whereby release of the adhesive-inactivating ingredient can be triggered, and said bandage can be removed from the skin easily and without pain, when the wearer applies pressure to or scratches the backing layer, causing rupture of said pockets.