# US 2014/0155916 A1 · Multi-Layer Porous Film Material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155916 A1 - Document ID: US20140155916A1 - Status: Published application - Kind: A1 - Application number: 13/690,445 - Filed: 2012-11-30 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Covidien LP - Applicants: Covidien LP - Inventors: Gerald N. Hodgkinson; Richard P. Stevenson - Web page: https://patentgrep.com/patent/US20140155916A1 ## CPC - A61B 17/07292: {Reinforcements for staple line, e.g. pledgets} - A61F 2/0063: {Implantable repair or support meshes, e.g. hernia meshes} - A61B 17/07207: {the staples being applied sequentially} - A61B 17/1155: {Circular staplers comprising a plurality of staples} - A61F 2002/0072: {Delivery tools therefor} - F04C 2270/0421: Controlled or regulated - 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) - F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS ## Abstract A surgical implant includes at least two porous film layers each having a plurality of pores. The porous film layers are in a stacked configuration and are interconnected to one another at a plurality of attachment points to define at least one void between the porous film layers. ## Claims ### Claim 1 A surgical implant, comprising: a first porous film layer including a plurality of pores; and a second porous film layer including a plurality of pores, the first and second porous film layers being in a stacked configuration and interconnected to one another at a plurality of attachment points to define at least one void between the first and second porous film layers. ### Claim 2 (depends on 1) The surgical implant of claim 1, wherein each of the first porous film layer and the second porous film layer is fabricated from at least one of a biodegradable material and a non-degradable material. ### Claim 3 (depends on 1) The surgical implant of claim 1, wherein the first and second porous film layers are substantially planar. ### Claim 4 (depends on 1) The surgical implant of claim 1, wherein the plurality of attachment points are substantially evenly spaced about the first and second porous film layers. ### Claim 5 (depends on 1) The surgical implant of claim 1, further comprising a filler material disposed within at least one of the openings of the first porous film layer, the openings of the second porous film layer, and the voids between the first and second porous film layers. ### Claim 6 (depends on 5) The surgical implant of claim 5, wherein the filler material comprises a drug. ### Claim 7 (depends on 5) The surgical implant of claim 5, wherein the filler material is a hydrogel. ### Claim 8 (depends on 1) The surgical implant of claim 1, wherein the first porous film layer has a first thickness and the second porous film layer has a second thickness that is different from the first thickness. ### Claim 9 (depends on 1) The surgical implant of claim 1, wherein the first porous film layer has a first modulus of elasticity and the second porous film layer has a second modulus of elasticity that is different from the first modulus of elasticity. ### Claim 10 (depends on 1) The surgical implant of claim 1, wherein the first porous film layer has a first degree of porosity and the second porous film layer has a second degree of porosity that is different from the first degree of porosity. ### Claim 11 (depends on 1) The surgical implant of claim 1, wherein the first porous film layer is uniaxially oriented in a first direction and the second porous film layer is uniaxially oriented in a second direction that is different from the first direction. ### Claim 12 (depends on 1) The surgical implant of claim 1, further comprising an adhesion barrier layer applied to an outer surface of at least one of the first and second porous film layers. ### Claim 13 (depends on 1) The surgical implant of claim 1, further comprising an adhesive layer applied to an outer surface of at least one of the first and second porous film layers. ### Claim 14 (depends on 1) The surgical implant of claim 1, further comprising a third porous film layer including a plurality of pores, the third porous film layer being interposed between the first and second porous film layers, and interconnected by at least one attachment point with at least one of the first and second porous film layers. ### Claim 15 A surgical implant comprising a plurality of porous substrates in a layered configuration, the porous substrates being interconnected by a plurality of spaced attachment points defining voids between successive layers of the porous substrates. ### Claim 16 (depends on 15) The surgical implant of claim 15, wherein each porous substrate is formed entirely from a film. ### Claim 17 (depends on 15) The surgical implant of claim 15, wherein the surgical implant is a surgical buttress. ### Claim 18 (depends on 15) The surgical implant of claim 15, wherein the surgical implant is a hernia repair device. ### Claim 19 (depends on 15) The surgical implant of claim 15, wherein the surgical implant is a scaffold. ### Claim 20 (depends on 15) The surgical implant of claim 15, wherein the surgical implant is a tissue sealant patch.