# US 10,864,116 B2 · Sealing systems and methods employing a hybrid switchable drape > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,116 B2 - Document ID: US10864116B2 - Status: Granted - Kind: B2 - Application number: 15/410,991 - Filed: 2017-01-20 - Published: 2017-07-06 - Granted: 2020-12-15 - Earliest claimed: 2011-12-16 - Assignees: KCI Licensing, Inc. - Applicants: KCI Licensing, Inc. - Inventors: Christopher Brian Locke; Timothy Mark Robinson - Web page: https://patentgrep.com/patent/US10864116B2 ## CPC - A61F 13/00068 - A61F 13/00059: {provided with visual effects, e.g. printed or colored} - A61F 13/00063: {comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic (drug delivery dressings A61K9/70; chemical aspect of the additives A61L15/00)} - A61F 13/023: {wound covering film layers without a fluid retention layer} - A61F 13/0216 - A61F 13/0253: {characterized by the adhesive material} - A61F 13/0256: {characterized by the parametric properties of the adhesive} - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - B32B 27/08: of synthetic resin - B32B 27/283: {comprising polysiloxanes} - B32B 27/308: {comprising acrylic (co)polymers} - C09J 7/20: characterised by their carriers - A61B 2046/205: {Adhesive drapes} - A61F 2013/00289: {easy removing of the protection sheet} - A61M 1/0088 - B32B 2250/24: All layers being polymeric - B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer - B32B 2307/7242: Non-permeable - B32B 2535/00: Medical equipment, e.g. bandage, prostheses or catheter - C09J 2201/20 - C09J 2201/36 - Y10T 156/1056: Perforating 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) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## 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 ### Claim 1 A sealing member, comprising: a film layer; a first adhesive layer coupled to the film layer; a second adhesive layer coupled to the first adhesive layer; 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; and a plurality of polymer particles disposed in the first adhesive layer, the polymer particles configured to dissolve in response to interaction with a switching solution. ### Claim 2 (depends on 1) The sealing member of claim 1, wherein the film layer is perforated. ### Claim 3 (depends on 1) The sealing member of claim 1, wherein the film layer includes a plurality of perforations, the plurality of perforations coincident with the second adhesive layer. ### Claim 4 (depends on 1) The sealing member of claim 1, wherein the film layer includes a plurality of perforations and each perforation has an average effective diameter between about 0.2 mm and about 0.5 mm. ### Claim 5 (depends on 1) The sealing member of claim 1, wherein the film layer includes a plurality of perforations, the plurality of perforations registered with the plurality of apertures. ### Claim 6 (depends on 5) The sealing member of claim 5, wherein each perforation of the plurality of perforations is registered with a respective aperture of the plurality of apertures. ### Claim 7 (depends on 5) The sealing member of claim 5, wherein the plurality of perforations are configured to permit interaction of the switching solution with the first adhesive layer adjacent to the plurality of apertures. ### Claim 8 (depends on 1) The sealing member of claim 1, further comprising dye particles disposed in the first adhesive layer, the dye particles configured to dissolve in response to interaction with the switching solution. ### Claim 9 A system for providing negative-pressure therapy, the system comprising: a tissue interface configured to be disposed proximate to a tissue site; a cover configured to be disposed over the tissue interface to form a sealed space containing the tissue interface, the cover comprising: a barrier layer; an acrylic adhesive layer coupled to the barrier layer; a silicone gel layer coupled to the acrylic adhesive layer; a plurality of apertures extending through the silicone gel layer, exposing at least a portion of the acrylic adhesive layer through the silicone gel layer; and a plurality of release agents disposed in the acrylic adhesive layer, the release agents configured to dissolve in response to interaction with a release solution; and a negative-pressure source configured to be fluidly coupled to the sealed space to draw fluid from the sealed space. ### Claim 10 (depends on 9) The system of claim 9, wherein the acrylic adhesive layer has a first bond strength of about 8.0N/cm and a second bond strength of about 0.5N/cm, the acrylic adhesive layer transitioning from the first bond strength to the second bond strength in response to the dissolution of the release agents. ### Claim 11 (depends on 9) The system of claim 9, wherein the barrier layer is perforated. ### Claim 12 (depends on 9) The system of claim 9, wherein the barrier layer includes a plurality of perforations, the plurality of perforations coincident with the silicone gel layer. ### Claim 13 (depends on 9) The system of claim 9, wherein the barrier layer includes a plurality of perforations and each perforation has an average effective diameter between about 0.2 mm and about 0.5 mm. ### Claim 14 (depends on 9) The system of claim 9, wherein the barrier layer includes a plurality of perforations, the plurality of perforations registered with the plurality of apertures. ### Claim 15 (depends on 14) The system of claim 14, wherein each perforation of the plurality of perforations is registered with a respective aperture of the plurality of apertures. ### Claim 16 (depends on 15) The system of claim 15, wherein the plurality of perforations are configured to permit interaction of the release solution with the acrylic adhesive layer adjacent to the plurality of apertures. ### Claim 17 (depends on 9) The system of claim 9, further comprising dye particles disposed in the acrylic adhesive layer, the dye particles configured to dissolve in response to interaction with the release solution. ### Claim 18 A method for removing a drape, the method comprising: applying a switching solution to a drape, wherein the drape comprises: a film layer; a first adhesive layer coupled to the film layer; a second adhesive layer coupled to the first adhesive layer; 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; and a plurality of polymer particles disposed in the first adhesive layer; dissolving the polymer particles with the switching solution to reduce a bond strength of the first adhesive layer; and lifting an edge of the drape. ### Claim 19 (depends on 18) The method of claim 18, wherein dissolving the polymer particles with the switching solution comprises: applying the switching solution to an edge of the first adhesive layer; expanding the polymer particles to lift the film layer away from the second adhesive layer; and dissolving the polymer particles to form a polymer particle solution, the polymer particle solution configured to interact with the first adhesive layer to decrease the bond strength of the first adhesive layer. ### Claim 20 (depends on 18) The method of claim 18, wherein dissolving the polymer particles with the switching solution comprises: applying the switching solution to a plurality of perforations of the film layer, the plurality of perforations registered with the plurality of apertures; expanding the polymer particles to lift the film layer away from an epidermis; dissolving the polymer particles to form a polymer particle solution, the polymer particle solution configured to interact with the first adhesive layer to decrease the bond strength of the first adhesive layer adjacent the apertures in the second adhesive layer; and lifting the drape away from the epidermis to remove the film layer, the first adhesive layer and the second adhesive layer.