Flexible, adherent, and non-polyurethane film wound drape cover

Patent metadata

Field	Value
Publication number	US-9561135-B2
Application number	US-201314080199-A
Country	US
Kind code	B2
Filing date	Nov 14, 2013
Priority date	Jan 2, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A system for treating a tissue site includes a reduced-pressure source to apply reduced pressure, a manifold in fluid communication with the pressure source to provide reduced pressure to the tissue site, and a drape for adhering to the tissue site to cover the tissue site and the manifold. The drape includes an adhesive layer for sealing the drape to the tissue site to create a sealed space having the manifold therein, and a non-adhesive layer formed from a portion of the adhesive layer. A method for manufacturing a medical drape includes providing a sheet of adhesive material and treating a side of the sheet of adhesive material to form a non-adhesive layer and an adhesive layer. The method laminates a release liner adjacent the adhesive layer.

First claim

We claim:

1. A system for treating a tissue site, the system comprising:
a reduced-pressure source configured to apply reduced pressure;
a manifold in fluid communication with the reduced-pressure source and configured to distribute reduced pressure to the tissue site; and
a drape consisting essentially of a substantially homogeneous silicone adhesive and further comprising:
an adhesive layer having a thickness greater than about 100 microns, the adhesive layer having a first surface and a second surface,
a plasma layer having a thickness of about 5 microns formed by treating the first surface of the adhesive layer with a plasma treatment process, and
wherein the second surface of the adhesive layer is configured to adhere at least to the tissue site and cover the manifold to create a sealed space over the manifold within the tissue site.

2. The system of claim 1 , wherein the thickness of the adhesive layer is between about 100 microns and about 600 microns.

3. A dressing for treating a tissue site comprising:
a manifold having a plurality of flow channels configured to distribute reduced pressure to the tissue site; and
a drape comprising:
an adhesive layer formed of a substantially uniform silicone adhesive having a thickness greater than about 100 microns, the adhesive layer having a first surface and a second surface,
a plasma layer having a thickness of about 5 microns formed by treating the first surface of the adhesive layer with a plasma treatment process, and
wherein the second surface of the adhesive layer is configured to adhere at least to the tissue site and cover the manifold to create a sealed space over the manifold within the tissue site.

4. The dressing of claim 3 , wherein the thickness of the adhesive layer is between about 100 microns and about 600 microns.

5. The dressing of claim 3 , wherein the drape further comprises a scrim layer disposed within the adhesive layer.

6. The dressing of claim 3 , wherein the drape further comprises a scrim layer proximate the first surface of the adhesive layer.

7. The dressing of claim 3 , wherein the drape further comprises a scrim layer disposed within the adhesive layer proximate the plasma layer.

8. A method for manufacturing a drape, the method comprising the steps of:
a) providing a sheet of adhesive material having a first surface, a second surface, and a thickness greater than about 100 microns, the sheet of adhesive material consisting essentially of a substantially homogeneous silicone adhesive;
b) treating the first surface of the sheet of adhesive material with a plasma treatment process to form a plasma layer having a thickness of about 5 microns on the first surface of the sheet of adhesive material and an adhesive layer on the second surface of the sheet of adhesive material; and
c) laminating a release liner adjacent the second surface of the sheet of adhesive material.

9. The method of claim 8 , wherein step (b) comprises exposing the first surface of the sheet of adhesive material to a plasma stream to activate a monomer in the sheet of adhesive material.

10. The method of claim 8 , wherein step (c) occurs prior to step (b).

11. The method of claim 8 , wherein step (b) comprises exposing a corona discharge to the first surface of the sheet of adhesive material.

12. A medical drape having a plasma layer on a first side of the medical drape and an adhesive layer on a second side of the medical drape, the plasma layer being formed from a portion of the adhesive layer, the medical drape produced by a process comprising the steps of:
a) providing a sheet of adhesive material having a first surface, a second surface, and a thickness greater than about 100 microns, the sheet of adhesive material formed solely from a silicone adhesive;
b) treating the first surface of the sheet of adhesive material with a plasma treatment process to form a plasma layer having a thickness of about 5 microns on the first surface of the sheet of adhesive material and an adhesive layer on the second surface of the sheet of adhesive material; and
c) laminating a release liner adjacent the second surface of the sheet of adhesive material.

13. The medical drape produced by the process of claim 12 , wherein step (b) comprises exposing the first surface of the sheet of adhesive material to a plasma stream to activate a monomer in the sheet of adhesive material.

14. The medical drape produced by the process of claim 12 , wherein step (c) occurs prior to step (b).

15. The medical drape produced by the process of claim 12 , wherein the adhesive is a silicone adhesive having a thickness between about 100 microns and about 600 microns.

Assignees

• Kci Licensing Inc

Inventors

• Robinson Timothy Mark
• Locke Christopher Brian

Classifications

• A61M1/962

  having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction · CPC title

• A61M1/915

  Constructional details of the pressure distribution manifold · CPC title

• Y10T428/28

  Web or sheet containing structurally defined element or component and having an adhesive outermost layer · CPC title

• A61F13/0253 Primary

  characterized by the adhesive material · CPC title

• Y10T428/2852

  Adhesive compositions · CPC title