# US 12,004,926 B2 · Wound dressings and systems with remote oxygen generation for topical wound therapy and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,926 B2 - Document ID: US12004926B2 - Status: Granted - Kind: B2 - Application number: 16/648,308 - Filed: 2018-09-18 - Published: 2020-09-10 - Granted: 2024-06-11 - Earliest claimed: 2017-09-18 - Assignees: KCI Licensing, Inc.; KCI USA, Inc. - Applicants: Kci Licensing, Inc.; Kci USA, Inc. - Inventors: Justin Alexander Long; Christopher Brian Locke; Alexander Waite - Web page: https://patentgrep.com/patent/US12004926B2 ## CPC - 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 1/85: {with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants (for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208)} - A61M 1/913: {having a bridging element for transferring the reduced pressure from the connector to the dressing} - A61M 1/915: {Constructional details of the pressure distribution manifold} - A61M 1/94: {with gas supply means} - A61M 1/964: {having venting means on or near the dressing} - A61F 2013/0017: {possibility of applying fluid} - A61F 2013/00536: {for draining or irrigating wounds} - A61M 35/30: {Gas therapy for therapeutic treatment of the skin} - A61M 2202/0208: Oxygen - A61M 2205/7536: allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes - C01B 13/0214: {Hydrogen peroxide} - 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) - 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)} - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} ## Abstract This disclosure includes wound dressings and systems with remote oxygen generation for topical wound therapy and related methods. Some systems include a dressing for facilitating delivery of oxygen to the target tissue, the dressing having: a first manifold that defines a plurality of gas passageways and is configured to allow communication of oxygen to the target tissue; a gas-occlusive layer configured to be disposed over the first manifold and coupled to tissue surrounding the target tissue such that: an interior volume is defined between the gas-occlusive layer and the target tissue; and the gas-occlusive layer limits escape of oxygen from the interior volume between the gas-occlusive layer and the tissue surrounding the target tissue; a container outside the interior volume, the container having a sidewall that defines a chamber configured to be in fluid communication with the interior volume; and an oxygen-generating material disposed within the chamber of container and configured to release oxygen when exposed to water. ## Claims ### Claim 1 A dressing for facilitating delivery of oxygen to target tissue, the dressing comprising: a manifold that defines a plurality of gas passageways and is configured to allow communication of oxygen to the target tissue; a liquid control layer having a plurality of apertures having a planform area that changes in response to fluid flow, the liquid control layer configured to be disposed between the manifold and the target tissue to restrict communication of exudate toward the target tissue; a patient-interface layer configured to be disposed below the manifold and in contact with the tissue surrounding the target tissue, the patient-interface layer defining a plurality of openings configured to allow communication of oxygen and exudate through the patient-interface layer, the plurality of openings misaligned with the plurality of apertures of the liquid control layer; a gas-occlusive layer configured to be disposed over the manifold and coupled to tissue surrounding the target tissue such that: an interior volume is defined between the gas-occlusive layer and the target tissue; and the gas-occlusive layer limits escape of oxygen from the interior volume between the gas-occlusive layer and the tissue surrounding the target tissue; and a port coupled to the gas-occlusive layer, wherein the port is configured to be releasably coupled to an oxygen-generating device and to allow fluid communication of oxygen between the oxygen-generating device and the interior volume. ### Claim 2 (depends on 1) The dressing of claim 1, wherein the port is configured to be releasably coupled to the oxygen-generating device such that the oxygen-generating device can be decoupled from the port without removing the dressing from the tissue surrounding the target tissue. ### Claim 3 (depends on 1) The dressing of claim 1, wherein the port is configured to allow communication of oxygen into the interior volume through the port and allow communication of exudate out of the interior volume through the port. ### Claim 4 (depends on 1) The dressing of claim 1, comprising a filter coupled to the gas-occlusive layer and configured to allow communication of oxygen into the interior volume through the port and restrict communication of exudate out of the interior volume through the port. ### Claim 5 (depends on 1) The dressing of claim 1, comprising a sorbent layer having a sorbent material configured to be disposed above or below the manifold and to capture exudate.