# US 12,178,954 B2 · Reduced-pressure dressings employing tissue-fixation elements > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,954 B2 - Document ID: US12178954B2 - Status: Granted - Kind: B2 - Application number: 18/389,307 - Filed: 2023-11-14 - Published: 2024-03-14 - Granted: 2024-12-31 - Earliest claimed: 2011-06-24 - Assignees: Solventum Intellectual Properties Company - Applicants: Solventum Intellectual Properties Company - Inventors: Timothy Mark Robinson; Tyler H. Simmons; Colin John Hall; Jeanette Losole - Web page: https://patentgrep.com/patent/US12178954B2 ## CPC - A61M 1/90: {Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing} - A61F 13/025: {having a special distribution arrangement of the adhesive} - A61F 13/0253: {characterized by the adhesive material} - A61F 13/05: specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT] - A61M 1/915: {Constructional details of the pressure distribution manifold} - A61F 2013/00174: {possibility of applying pressure} - A61F 2013/00412: {for use with needles, tubes or catheters} - A61F 2013/00536: {for draining or irrigating wounds} - Y10T 29/49826: Assembling or joining - 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)} - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A reduced-pressure system for treating a tissue site on a patient includes a distribution manifold that adheres to a tissue site to allow retention without external support. The distribution manifold includes a porous member and a tissue-fixation element. The tissue-fixation element maintains the porous member substantially adjacent to the tissue site while a sealing member is applied. In one instance, the tissue-fixation element is a soluble adhesive that partially covers either the tissue-facing side of the porous member or a tissue-facing side of a fluid-permeable substrate layer that is on the tissue-facing side of the porous member. Other systems, distributions manifolds, and methods are presented. ## Claims ### Claim 1 A reduced-pressure system for treating a tissue site, comprising: a porous member comprising a plurality of flow channels for distributing reduced pressure; a fenestrated film coupled to the porous member; an adhesive layer coupled to the fenestrated film opposite the porous member; and a sealing member configured to create a sealed space containing the porous member, wherein the porous member is between the fenestrated film and the sealing member. ### Claim 2 (depends on 1) The system of claim 1, wherein the porous member comprises foam. ### Claim 3 (depends on 1) The system of claim 1, wherein the porous member comprises a felted mat. ### Claim 4 (depends on 1) The system of claim 1, wherein the adhesive layer has a tackiness strength that varies at different locations on the fenestrated film. ### Claim 5 (depends on 1) The system of claim 1, wherein the adhesive layer partially covers the fenestrated film. ### Claim 6 (depends on 1) The system of claim 1, wherein the adhesive layer is configured to allow fluid flow between portions of the adhesive layer on the fenestrated film. ### Claim 7 (depends on 1) The system of claim 1, wherein the adhesive layer comprises a spaced pattern configured to allow fluid flow through the adhesive layer. ### Claim 8 (depends on 1) The system of claim 1, wherein the adhesive layer comprises an open area configured to allow fluid flow through the adhesive layer and the fenestrated film. ### Claim 9 (depends on 1) The system of claim 1, wherein the sealing member is coupled to the porous member. ### Claim 10 (depends on 1) The system of claim 1, wherein the adhesive layer extends beyond the porous member to form an extension portion. ### Claim 11 (depends on 10) The system of claim 10, wherein the extension portion is configured to aid in off loading forces to the epidermis proximate to the tissue site. ### Claim 12 A dressing for treating a tissue site with reduced pressure, the dressing comprising: a first foam member; a second foam member coupled to the first foam member, the second foam member having a density higher than a density of the first foam member; an adhesive member coupled to the second foam member; and a sealing member configured to create a sealed space. ### Claim 13 (depends on 12) The dressing of claim 12, wherein the adhesive member comprises a pressure-sensitive adhesive. ### Claim 14 (depends on 12) The dressing of claim 12, wherein the adhesive member is not water-soluble. ### Claim 15 (depends on 12) The dressing of claim 12, wherein the adhesive member comprises silicone. ### Claim 16 (depends on 12) The dressing of claim 12, wherein the adhesive member comprises silicone gel. ### Claim 17 A dressing for treating a tissue site with reduced pressure, the dressing comprising: an open-cell foam member configured to distribute reduced pressure; a fenestrated film coupled to the open-cell foam member; and an adhesive layer coupled to the fenestrated film opposite the open-cell foam member, wherein the adhesive layer includes one or more openings configured to allow fluid flow through the adhesive layer. ### Claim 18 (depends on 17) The dressing of claim 17, further comprising a sealing member configured to be applied to the tissue site to create a sealed space containing the open-cell foam member. ### Claim 19 (depends on 17) The dressing of claim 17, wherein the adhesive layer extends beyond the open-cell foam member to form an extension portion. ### Claim 20 (depends on 17) The dressing of claim 17, further comprising an absorptive member.