# US 11,298,526 B2 · Device for healing wounds

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,298,526 B2
- Document ID: US11298526B2
- Status: Granted
- Kind: B2
- Application number: 16/564,987
- Filed: 2019-09-09
- Published: 2019-12-26
- Granted: 2022-04-12
- Earliest claimed: 2009-02-11
- Assignees: United States of America as represented by the Administrator of NASA
- Applicants: United States of America AS Represented By the Administrator of Nasa
- Inventors: Lisa S. Carnell; Emilie J. Siochi; Kam W. Leong
- Web page: https://patentgrep.com/patent/US11298526B2

## CPC

- A61N 1/0468: {Specially adapted for promoting wound healing}
- A61F 13/00051: {Accessories for dressings}
- A61F 13/023: {wound covering film layers without a fluid retention layer}
- A61L 15/24: Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof {(A61L15/225 takes precedence)}
- A61L 15/42: Use of materials characterised by their function or physical properties (liquid bandages A61L26/00)
- A61N 1/205: {for promoting a biological process}
- A61F 2013/00936: {metal}
- A61N 1/0464: {Specially adapted for promoting tissue growth}
- A61N 1/0492: {Patch electrodes (A61N1/0412, A61N1/0428 take precedence)}
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- 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)

## Abstract

A device for promoting healing of an injury in a living being is provided. Such device is based upon an injury covering portion, which portion comprises an electroactive polymer, such as poled polyvinylidine difluoride (PVDF) or a copolymer of PVDF. The electroactive polymer has either pyroelectric properties, piezoelectric properties, or both.

## Claims

### Claim 1

A device comprising: an injury covering portion configured to promote healing of an injury in a living being without the need to apply voltage during use and comprising a porous multilayer fiber mat comprising a plurality of layers, wherein each layer comprises a plurality of non-woven electroactive polymer fibers, wherein all of the fibers in a layer are aligned with and substantially parallel to one another, the fibers having both pyroelectric and piezoelectric properties, and the fibers comprising a poled polyvinylidine difluoride or a poled copolymer of polyvinylidine difluoride, wherein the fibers are electrospun.

### Claim 2 (depends on 1)

The device of claim 1, further comprising: an adhering portion for adhering the device to a living being.

### Claim 3 (depends on 1)

The device of claim 1, wherein the injury covering portion is sized to at least partially cover the injury.

### Claim 4 (depends on 1)

The device of claim 1, wherein the injury covering portion comprises a coating on at least one surface of the injury covering portion.

### Claim 5 (depends on 4)

The device of claim 4, wherein the coating comprises one of a biodegradable polymer or a precious metal.

### Claim 6 (depends on 1)

The device of claim 1, further comprising: a heat source for applying heat to the injury covering portion.