# US 11,896,463 B2 · Optimized compression bandage and kit using said bandage

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- Number: US 11,896,463 B2
- Document ID: US11896463B2
- Status: Granted
- Kind: B2
- Application number: 15/778,406
- Filed: 2016-11-25
- Published: 2018-12-06
- Granted: 2024-02-13
- Earliest claimed: 2015-11-26
- Assignees: Urgo Recherche Innovation Et Developpement
- Applicants: Urgo Recherche Innovation Et Developpement
- Inventors: Céline Cohade; David Grange; Serge Lecomte; Magali Roblot
- Web page: https://patentgrep.com/patent/US11896463B2

## CPC

- A61F 13/01038: {Flexibility, stretchability or elasticity}
- A61F 13/01017: {synthetic, e.g. polymer based}
- D04B 21/18: incorporating elastic threads
- D10B 2331/02: polyamides (D10B2331/08 takes precedence)
- D10B 2331/04: polyesters, e.g. polyethylene terephthalate [PET]
- D10B 2403/0213: with apertures, e.g. with one or more mesh fabric plies
- D10B 2509/028: Elastic support stockings or elastic bandages
- 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)
- D04B: KNITTING
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

A compression bandage in the form of a knit obtained by warp stitch technology on the basis of synthetic yarns and comprising two textile surfaces of respective textile structures that may be identical or different, the surfaces being interconnected by spacer yarns, each surface including elastic yarns, the bandage being characterized in that said knit presents: longitudinal stretch measured in compliance with the standard EN 14704-1 lying in the range 30% to 160%; and threshold shear stress greater than or equal to 2800 Pa.

## Claims

### Claim 1

A compression bandage in the form of a single knit obtained by warp stitch technology, the single knit consisting of synthetic yarns and comprising two textile surfaces of respective textile structures that may be identical or different, the two textile surfaces being interconnected by spacer yarn of the synthetic yarns, each of the two textile surfaces including elastic yarn of the synthetic yarns, said single knit not including adhesive and not including latex, and said single knit having:
a longitudinal stretch measured in compliance with the standard EN 14704-1 lying in the range 30% to 160%, and
a threshold shear stress of greater than or equal to 2800 Pa, wherein the threshold shear stress is a minimum shear stress that causes lateral slipping between two exterior faces of the single knit when pressed against each other with a force of 5.3 kPa, the two exterior faces respectively provided by the two textile surfaces, wherein
the spacer yarn is a monofilament that presents weight lying in the range 20 dtex to 80 dtex,
the single knit presents weight lying in the range 160 g/m2 to 370 g/m2 and a thickness lying in the range 1 mm to 2 mm,
the elastic yarn in one of the two textile surfaces presents weight lying in the range 40 dtex to 80 dtex, and
the two textile surfaces include thermoplastic yarns of the synthetic yarns presenting weights lying in the range 40 dtex to 90 dtex.

### Claim 2 (depends on 1)

A compression bandage according to claim 1, wherein the single knit presents spacing between the two textile surfaces lying in the range 0.4 mm to 1.5 mm.

### Claim 3 (depends on 2)

A compression bandage according to claim 2, wherein the single knit presents the spacing between the two textile surfaces lying in the range 0.5 mm to 1.1 mm.

### Claim 4 (depends on 1)

A compression bandage according to claim 1, wherein the spacer yarn presents weight lying in the range 40 dtex to 70 dtex.

### Claim 5 (depends on 1)

A compression bandage according to claim 1, wherein
a first exterior face of the two exterior faces has a textile structure that is at least one selected from the following list:
charmeuse,
open or closed loop,
atlas in one or more rows, and
closed or open loop or alternating closed loop and open loop pillar stitch,
the first exterior face being opposite to a second exterior face of the two exterior faces that is to be put into contact with the skin, the second exterior face having a textile structure that is a net, presenting an open-work textile structure.

### Claim 6 (depends on 1)

A compression bandage according to claim 1, wherein the single knit presents thickness lying in the range 1 mm to 1.5 mm.

### Claim 7 (depends on 1)

A compression bandage according to claim 1, wherein the single knit presents weight lying in the range 160 g/m2 to 300 g/m2.

### Claim 8 (depends on 1)

A compression bandage according to claim 1, wherein the single knit presents longitudinal stretch as defined in the standard EN 14704-1 lying in the range 50% to 120%.

### Claim 9 (depends on 1)

A compression bandage according to claim 1, wherein the single knit is fabricated using a single bar for the spacer yarn that connects together the two textile surfaces.

### Claim 10 (depends on 1)

A kit comprising one or more compression bandages according to claim 1 and one or more dressings adapted to be placed on a wound prior to putting the compression bandage into place.

### Claim 11 (depends on 1)

A compression bandage according to claim 1, wherein the single knit when wound around itself results in the two exterior faces being disposed in consecutive wraps of the single knit and in contact with each other.