# US 12,599,399 B2 · Method and system for providing active tissue site debridement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,599,399 B2 - Document ID: US12599399B2 - Status: Granted - Kind: B2 - Application number: 18/760,999 - Filed: 2024-07-01 - Published: 2024-10-24 - Granted: 2026-04-14 - Earliest claimed: 2018-05-25 - Assignees: Solventum Intellectual Properties Company - Applicants: Solventum Intellectual Properties Company - Inventors: Brett L. Moore; Christopher A. Carroll; Justin R. Rice; Benjamin A. Pratt; James Seddon - Web page: https://patentgrep.com/patent/US12599399B2 ## CPC - A61B 17/320758: {with a rotating cutting instrument, e.g. motor driven (A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002)} - 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 13/01008: {characterised by the material} - A61F 13/01029: {made of multiple layers} - A61F 13/01034: {characterised by a property} - 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] - A61B 2017/00017: {Electrical control of surgical instruments} - A61B 2017/00761: {Removing layer of skin tissue, e.g. wrinkles, scars or cancerous tissue} - A61B 2017/00867: {shape memory effect} - A61B 2017/320004: {abrasive} - A61B 2017/320008: {Scrapers} - A61K 9/0014: {Skin, i.e. galenical aspects of topical compositions (non-active ingredients are additionally classified in A61K47/00; A61K9/0009, A61K9/0021, A61K9/7015, A61K9/7023 take precedence; cosmetic preparations A61K8/00, A61Q; preparations for wound dressings or bandages A61L26/00)} - A61K 9/70: Web, sheet or filament bases {; Films; Fibres of the matrix type containing drug (hollow drug-filled fibres A61K9/0092)} - 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} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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) - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - 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)} ## Abstract A wound debridement system includes a wound dressing having an active layer and a wound interface layer. The active layer is formed from one or more drive elements arranged about a film layer, by which the drive elements are attached to the wound interface layer. Activation of the drive elements is configured to cause the movement of the wound interface layer relative to a tissue site to which the wound dressing is applied. The drive elements may include one or more drive members formed of a material having a shape memory effect configured to transition the drive members between expanded and collapsed configurations and/or one or more motors configured to translate or oscillate the active layer. The wound interface layer may be formed having an abrasive wound-facing surface, such that the movement of the wound interface layer causes a mechanical disruption and debridement of debris at the tissue site. ## Claims ### Claim 1 An active debridement wound dressing comprising: a wound interface layer comprising an abrasive surface configured to contact a wound and mechanically debride the wound when the wound interface layer moves relative to the wound; a fenestrated film fixed to the wound interface layer; an electro-active polymer having a plurality of segments fixed to the fenestrated film, the electro-active polymer configured to expand or contract when activated, thereby causing the wound interface layer to move relative to the wound and mechanically debride the wound, the fenestrated film and the electro-active polymer comprising an active layer; and a foam layer coupled to the active layer opposite the wound interface layer such that the active layer is encapsulated between the foam layer and the wound interface layer. ### Claim 2 (depends on 1) The active debridement wound dressing of claim 1, wherein the active layer comprises: a central hub of the electro-active polymer; and a plurality of radial segments of the electro-active polymer extending radially outward from the central hub. ### Claim 3 (depends on 2) The active debridement wound dressing of claim 2, wherein the active layer comprises a perimeter of the electro-active polymer forming a closed shape around the central hub and the plurality of radial segments. ### Claim 4 (depends on 3) The active debridement wound dressing of claim 3, wherein the plurality of radial segments connect the central hub to the perimeter. ### Claim 5 (depends on 1) The active debridement wound dressing of claim 1, wherein the electro-active polymer is activated by electric current and configured to expand or contract when the electric current is applied to the electro-active polymer. ### Claim 6 (depends on 1) The active debridement wound dressing of claim 1, further comprising a control unit coupled to the active layer and configured to activate the active layer by applying an electric current to the active layer. ### Claim 7 (depends on 6) The active debridement wound dressing of claim 6, wherein the control unit is configured to communicate with a driver unit outside the wound dressing and to activate the active layer upon receiving a control signal from the driver unit. ### Claim 8 (depends on 1) The active debridement wound dressing of claim 1, wherein the electro-active polymer is configured to forcefully return to a non-activated size or shape when no longer activated. ### Claim 9 (depends on 8) The active debridement wound dressing of claim 8, wherein the electro-active polymer is configured to oscillate between the non-activated size or shape and an activated size or shape to impart oscillating movement to the wound interface layer. ### Claim 10 (depends on 1) The active debridement wound dressing of claim 1, further comprising a drape layer sealable to a patient's skin surrounding the wound and configured to maintain the wound at negative pressure. ### Claim 11 An active debridement wound dressing comprising: a wound interface layer comprising an abrasive surface configured to contact a wound and mechanically debride the wound when the wound interface layer moves relative to the wound; a fenestrated film fixed to the wound interface layer; one or more oscillating motors fixed to the fenestrated film, the one or more oscillating motors configured to cause the wound interface layer to move relative to the wound when activated and thereby mechanically debride the wound, the fenestrated film and the one or more oscillating motors comprising an active layer; and a foam layer coupled to the active layer opposite the wound interface layer such that the active layer is encapsulated between the foam layer and the wound interface layer. ### Claim 12 (depends on 11) The active debridement wound dressing of claim 11, wherein the one or more oscillating motors are by powered by electric current and configured to cause the wound interface layer to move when the electric current is applied to the one or more oscillating motors. ### Claim 13 (depends on 11) The active debridement wound dressing of claim 11, further comprising a control unit coupled to the one or more oscillating motors and configured to drive the one or more oscillating motors by applying an electric current to the one or more oscillating motors. ### Claim 14 (depends on 13) The active debridement wound dressing of claim 13, wherein the control unit is configured to communicate with a driver unit outside the wound dressing and is configured to drive the one or more oscillating motors upon receiving a control signal from the driver unit. ### Claim 15 (depends on 13) The active debridement wound dressing of claim 13, wherein the control unit is configured to drive the one or more oscillating motors in response to a change in pressure within the wound dressing. ### Claim 16 (depends on 11) The active debridement wound dressing of claim 11, further comprising a drape layer sealable to a patient's skin surrounding the wound and configured to maintain the wound at negative pressure.