IP Library Granted Patent US 11,944,520
Granted Patent B2
US 11,944,520 · App. 16/746,425 · Granted Apr 2, 2024

Sealing systems and methods employing a hybrid switchable drape

Inventors: Christopher Brian Locke (Bournemouth, GB); Timothy Mark Robinson (Shillingstone, GB)
Assignee: 3M Innovative Properties Company
A61F13/00068A61F13/00059A61F13/00063A61F13/0216A61F13/023A61F13/0253A61F13/0256A61M1/915B32B3/266B32B27/08B32B27/283B32B27/308C09J7/20A61B2046/205A61F2013/00289A61M1/962B32B2250/24B32B2255/10B32B2307/7242B32B2535/00C09J2301/18C09J2301/208Y10T156/1056
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Quick Facts
Patent No.
US 11,944,520
App. No.
16/746,425
Granted
Apr 2, 2024
Kind
B2
Abstract

Systems, kits, methods of manufacturing, and a sealing member for creating a sealed space are described. The sealing member can include a film layer and a first adhesive layer coupled to the film layer. The sealing member can also include a second adhesive layer coupled to the first adhesive layer. A plurality of apertures may extend through the second adhesive layer. Each aperture can expose at least a portion of the first adhesive layer through the second adhesive layer. A plurality of polymer particles may be disposed in the first adhesive layer. The polymer particles can be configured to dissolve in response to interaction with a switching solution.

Claims (37)

1. A sealing member, comprising:

a film layer having a plurality of perforations extending through the film layer;

a first adhesive layer coupled to the film layer and covering the plurality of perforations, a tackiness of the first adhesive layer configured to decrease in response to application of a solution to the first adhesive layer;

a second adhesive layer coupled to the first adhesive layer; and

a plurality of apertures extending through the second adhesive layer, each aperture exposing at least a portion of the first adhesive layer through the second adhesive layer.

2. The sealing member of claim 1 , wherein the perforations comprise slits having no material removed from the film layer.

3. The sealing member of claim 1 , wherein the plurality of perforations have an average effective diameter between about 0.05 mm and about 0.4 mm.

4. The sealing member of claim 1 , wherein a surface area of the plurality of perforations is between about 0.2% and about 13% of a surface area of the film layer.

5. The sealing member of claim 1 , wherein the perforations comprise half-moon slits.

6. The sealing member of claim 1 , wherein the perforations have a pitch in a range of about 1.0 mm to about 3.0 mm.

7. The sealing member of claim 1 , wherein the film layer has a thickness in a range of about 5 microns to about 60 microns.

8. The sealing member of claim 1 , further comprising a soluble layer coupled to the film layer and the first adhesive layer, the solution being operable to substantially dissolve the soluble layer.

9. A kit for forming a seal over a portion of a patient's body, the kit comprising:

a drape comprising:

an outer layer having a first side, a second side, and a plurality of perforations extending through the outer layer,

a first adhesive covering the plurality of perforations on the second side of the outer layer,

a second adhesive coupled to the first adhesive and having a plurality of apertures extending through the second adhesive, each aperture exposing at least a portion of the first adhesive through the second adhesive,

a first release member releasably coupled to the first side of the outer layer, and

a second release member releasably coupled to the second adhesive; and

a solution configured to decrease an adhesive strength of the first adhesive if applied to the first side of the outer layer.

10. The kit of claim 9 , wherein the solution comprises alcohol.

11. The kit of claim 9 , wherein the solution further comprises a local pain killer.

12. The kit of claim 9 , wherein the solution is adapted to decrease a tackiness of the first adhesive between about 0% and about 70%.

13. The kit of claim 9 , wherein the solution is adapted to decrease a tackiness of the first adhesive by about 50%.

14. The kit of claim 9 , further comprising:

the first release member having gripping portions; and

the second release member having gripping portions.

15. A sealing system for use in treating a tissue site on a patient with reduced pressure, the sealing system comprising:

an outer layer formed from a drape material and having a first side and a second side, wherein the outer layer is formed with a plurality of slits extending through the outer layer and having no drape material removed from the outer layer;

a high-strength adhesive coupled to the second side of the outer layer, wherein the high-strength adhesive has a first side, a second side, and a tackiness;

a sealing adhesive coupled to the high-strength adhesive and having a plurality of apertures extending through the sealing adhesive, each aperture exposing at least a portion of the high-strength adhesive through the sealing adhesive; and

a switching solution, wherein when the switching solution is applied to the high-strength adhesive, the tackiness of the high-strength adhesive decreases.

16. The sealing system of claim 15 , wherein the plurality of slits have an average effective diameter between about 0.05 mm and about 0.4 mm.

17. The sealing system of claim 15 , wherein a surface area of the drape material removed to form the plurality of slits is between about 0.2% to about 13% of surface area of the outer layer.

18. The sealing system of claim 15 , wherein the high-strength adhesive comprises an acrylic adhesive.

19. The sealing system of claim 15 , wherein the high-strength adhesive further comprises expansion members that are configured to expand primarily perpendicularly to the second side of the outer layer when activated by the switching solution.

20. The sealing system of claim 15 , wherein the switching solution comprises alcohol.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2024
From: 3M INNOVATIVE PROPERTIES COMPANY
To: SOLVENTUM INTELLECTUAL PROPERTIES COMPANY
Reel/Frame 066436/0225 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 25, 2023
From: KCI LICENSING, INC.
To: 3M INNOVATIVE PROPERTIES COMPANY
Reel/Frame 064718/0544 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2020
From: LOCKE, CHRISTOPHER BRIAN; ROBINSON, TIMOTHY MARK
To: KCI LICENSING, INC.
Reel/Frame 051960/0442 →
Continuity (7)
Continuation 15410991 · Jan 20, 2017
Continuation In Part 14919055 · Oct 21, 2015
Continuation 13715982 · Dec 14, 2012
Continuation In Part 13715967 · Dec 14, 2012
Provisional Application 61576774 · Dec 16, 2011
Provisional Application 61576786 · Dec 16, 2011
Related Publication 20200146898A1 · May 14, 2020