# US 2017/0281147 A1 · Methods and devices for the prevention of incisional surgical site infections > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0281147 A1 - Document ID: US20170281147A1 - Status: Published application - Kind: A1 - Application number: 15/442,090 - Filed: 2017-02-24 - Published: 2017-10-05 - Earliest claimed: 2013-03-14 - Assignees: Prescient Surgical, Inc.; Leland Stanford Junior University - Applicants: Prescient Surgical,Inc.; The Leland Stanford Junior University - Inventors: Jeremy Koehler; Jonathan Coe; Insoo Suh - Web page: https://patentgrep.com/patent/US20170281147A1 ## CPC - A61B 17/3423: {Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247)} - A61B 17/0218: {for minimally invasive surgery (A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)} - A61M 1/77: {Suction-irrigation systems (aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463)} - 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 3/0279: {Cannula; Nozzles; Tips; their connection means} - A61B 17/0293: {with ring member to support retractor elements} - A61B 17/3431: {being collapsible, e.g. made of thin flexible material (A61B17/3423 takes precedence)} - A61B 2017/0225: {flexible, e.g. fabrics, meshes, or membranes} - A61B 2017/3429: {having a unitary compressible body, e.g. made of silicone or foam} - 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)} ## Abstract A surgical access device for facilitating access through an incision to a surgical site in a patient's body has a pliable membrane which is configured to engage and expand the incision. The pliable membrane includes a base layer, a permeable membrane attached to the base layer, and a fluid channel disposed between the layers. The fluid channel is fluidly coupled to a fluid source. The fluid is delivered to the surgical site via the permeable membrane. The surgical access device may also have a locking mechanism for holding the device in a desired configuration. ## Claims ### Claim 1 A surgical access device for facilitating access through an incision to a surgical site in a patient's body, said device comprising: a pliable membrane having a superior end and an inferior end, the pliable membrane configured to engage and expand the incision, the pliable membrane comprising: a base layer; a permeable membrane attached to the base layer; and a fluid channel disposed between the base layer and the permeable membrane, wherein the fluid channel is fluidly coupled to a fluid source and fluid from the fluid source is delivered to the surgical site via the permeable membrane, wherein the pliable membrane is a planar structure. ### Claim 2 (depends on 1) The device of claim 1, further comprising an intermediate layer of material disposed between the base layer and the permeable membrane. ### Claim 3 (depends on 2) The device of claim 2, wherein the intermediate layer of material comprises foam. ### Claim 4 (depends on 1) The device of claim 1, wherein the inferior end of the pliable membrane is concave and the superior end of the pliable membrane is convex when the pliable membrane is flattened. ### Claim 5 (depends on 1) The device of claim 1, wherein the base layer is impermeable. ### Claim 6 (depends on 1) The device of claim 1, wherein the permeable membrane comprises a plurality of holes disposed therethrough. ### Claim 7 (depends on 1) The device of claim 1, further comprising a superior retention member coupled to the superior end of the pliable membrane. ### Claim 8 (depends on 7) The device of claim 7, wherein the superior retention member is radially expandable and radially collapsible. ### Claim 9 (depends on 7) The device of claim 7, wherein the superior retention member forms a closed ring. ### Claim 10 (depends on 7) The device of claim 7, wherein the superior retention member comprises a maximum diameter and the incision comprises a length, and wherein the maximum diameter of the superior retention member is at least the length of the incision plus two centimeters. ### Claim 11 (depends on 1) The device of claim 1, further comprising an inferior retention member coupled to the inferior end of the pliable membrane, and wherein the inferior retention member is resilient. ### Claim 12 (depends on 11) The device of claim 11, wherein the inferior retention member forms a closed ring. ### Claim 13 (depends on 1) The device of claim 1, wherein the superior end of the pliable membrane comprises a plurality of tabs each having a hole disposed therethrough, the hole configured to be coupled with an engagement element on the superior retention member. ### Claim 14 (depends on 1) The device of claim 1, wherein the pliable membrane forms a substantially frustoconical shape. ### Claim 15 (depends on 1) The device of claim 1, wherein the pliable membrane maintains a fixed length when the incision is expanded. ### Claim 16 (depends on 1) The device of claim 1, further comprising a suction channel disposed between the base layer and the permeable membrane, wherein the suction channel is configured to be coupled to a vacuum source, and vacuum from the vacuum source draws fluid from the surgical site into the suction channel via the permeable membrane. ### Claim 17 (depends on 16) The device of claim 16, wherein the permeable membrane comprises a plurality of holes disposed therethrough, and wherein the plurality of holes comprise a first plurality of holes and a second plurality of holes, the first plurality of holes through which the vacuum is applied, and the second plurality of holes through which the fluid passes. ### Claim 18 (depends on 17) The device of claim 17, wherein the second plurality of holes are smaller than the first plurality of holes. ### Claim 19 (depends on 16) The device of claim 16, wherein the suction channel and the fluid channel comprise a plurality of channels, and wherein the plurality of channels are positioned along the pliable membrane so as to substantially minimize fluidic resistance at a respective exit point. ### Claim 20 (depends on 19) The device of claim 19, wherein the plurality of channels comprise a plurality of inner suction channels and a plurality of outer suction channels.