# US 9,539,122 B2 · Aneurysm treatment device and method of use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,539,122 B2 - Document ID: US9539122B2 - Status: Granted - Kind: B2 - Application number: 14/223,939 - Filed: 2014-03-24 - Published: 2014-09-25 - Granted: 2017-01-10 - Earliest claimed: 2001-07-20 - Assignees: MicroVention, Inc. - Applicants: MicroVention, Inc. - Inventors: Thomas H. Burke; Brian J. Cox; Matthew J. Fitz; David Ferrera - Web page: https://patentgrep.com/patent/US9539122B2 ## CPC - A61F 2/82: Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) - A61B 17/12022: {Occluding by internal devices, e.g. balloons or releasable wires (plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20)} - A61B 17/12118: {for positioning in conjunction with a stent} - A61B 17/12172: {having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526)} - A61B 17/12177: {comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated} - A61B 17/12186: {liquid materials adapted to be injected} - A61B 17/1219: {expandable in contact with liquids} - A61B 2017/12054: {Details concerning the detachment of the occluding device from the introduction device} - A61F 2002/065: {Y-shaped blood vessels} - A61F 2002/823: {Stents, different from stent-grafts, adapted to cover an aneurysm} - A61F 2250/0067: Means for introducing or releasing pharmaceutical products into the body - 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) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An apparatus for treating vascular aneurysms includes an occlusive support device comprised of one or more support members. The occlusive device has, an end cap member and an anchoring member. The end cap member is comprised of at least one of one or more of the support members. The end cap member has openings and the end cap member comprises a reactive material that is configured to hydrate upon delivery of the device and to reduce the size of said openings. The device is configured so that the occlusive members can be positioned in the blood vessel proximate the neck of a vascular aneurysm, the reactive material hydrates and increases the resistance to blood flow into the aneurysm, and the anchoring member anchors the device in the blood vessel without occluding flow through the blood vessel. ## Claims ### Claim 1 An apparatus for treating vascular aneurysms, comprising: an occlusive support device comprising one or more support members forming a first end portion and a second end portion and defining a lumen therethrough; and a rounded end cover member forming a longitudinal sidewall at said first end portion of said occlusive support device; wherein said end cover member has openings and said end cover member comprises a reactive material that is configured to hydrate upon delivery of the device and to reduce the size of said openings; an anchoring member at said second end portion; and, a plurality of elongated members along said longitudinal axis and connecting said end cover member to said anchoring member, said elongated members having a length selected to span across a blood vessel adjacent to a targeted aneurysm to connect the anchoring member to the end cover while minimizing resistance to blood flow through the adjacent blood vessel. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein said end cover member comprises at least one of said one or more support members. ### Claim 3 (depends on 1) The apparatus of claim 1 wherein said end cover member comprises a support member formed in a circular shape of decreasing diameter. ### Claim 4 (depends on 1) The apparatus of claim 1 wherein said end cover member comprises a plurality of interwoven support members forming a fenestrated end cover. ### Claim 5 (depends on 1) The apparatus of claim 1 wherein said reactive material is applied to said end cover member. ### Claim 6 (depends on 1) The apparatus of claim 1 wherein said end cover member comprises a porous material. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein said end cover is capable of increasing the resistance of blood flow therethrough. ### Claim 8 (depends on 1) The apparatus of claim 1 wherein said end cover member comprises one or more filamentary elements. ### Claim 9 (depends on 8) The apparatus of claim 8 wherein said filamentary elements are arranged to form an end cover member selected from the group consisting of a coil, a weave, a braid, a mesh, a screen, and a cable. ### Claim 10 (depends on 1) The apparatus of claim 1 wherein said reactive material is a hydrogel. ### Claim 11 (depends on 1) The apparatus of claim 1 wherein said reactive material in configured to expand in response to changes in physiological pH. ### Claim 12 (depends on 1) The apparatus of claim 1 wherein said end cover member comprises a mesh member comprised of a plurality of wires. ### Claim 13 (depends on 12) The apparatus of claim 12 wherein said mesh member is comprised of fine, self-expanding wires. ### Claim 14 (depends on 12) The apparatus of claim 12 wherein said mesh member is a low porosity mesh member. ### Claim 15 (depends on 14) The apparatus of claim 14 wherein said low porosity member is a nonporous barrier. ### Claim 16 (depends on 1) The apparatus of claim 1 wherein said end cover has an extension along said longitudinal axis of said device that is less than said end cover diameter. ### Claim 17 (depends on 1) The apparatus of claim 1 wherein said end cover has an extension along said longitudinal axis of said device that is less than two times said end cover diameter. ### Claim 18 (depends on 1) The apparatus of claim 1, wherein said support device is substantially cylindrical and said support device comprises one or more support members along said longitudinal axis and defining fenestrations through said support device. ### Claim 19 (depends on 18) The apparatus of claim 18 wherein said end cover member comprises a plurality of said one or more support members interwoven together. ### Claim 20 (depends on 1) The apparatus of claim 1 wherein said anchoring member is a stent. ### Claim 21 (depends on 20) The apparatus of claim 20 wherein said stent is comprised of support members defining fenestrations through said support device. ### Claim 22 (depends on 1) The apparatus of claim 1 wherein said end cover member is comprised of self-expanding end cover member wires and said elongated members comprise the same self-expanding material as said end cover member and said elongated members comprise wires of the same size as said end cover member wires. ### Claim 23 (depends on 22) The apparatus of claim 22 wherein said elongated members are extensions of said end cover member wires. ### Claim 24 (depends on 22) The apparatus of claim 22 wherein said elongated members are attached to said end cover member. ### Claim 25 (depends on 22) The apparatus of claim 22 wherein said anchoring member is comprised of the same self-expanding material as said end cover member and said elongated members. ### Claim 26 (depends on 22) The apparatus of claim 22 wherein said elongated members are an extension of said anchoring member. ### Claim 27 An apparatus for treating vascular aneurysms, comprising: an occlusive support device comprising a longitudinal axis having first end portion and a second end portion; a rounded end cover member forming a longitudinal sidewall at said first end portion of said occlusive support device, wherein said end cover member has an end cover diameter and said end cover is generally perpendicular to said longitudinal axis of said support device, wherein said end cover has an extension along said longitudinal axis of said device that is less than two times said end cover diameter and wherein said end cover member has openings and said end cover member comprises a reactive material that is configured to hydrate upon delivery of the device and to reduce the size of said openings; and an anchoring member at said second end portion; elongated members connecting the first end portion to the second end portion, said elongated members having a length selected to span across a blood vessel adjacent to a targeted aneurysm to connect the anchoring member to the end cover member while minimizing resistance to blood flow through the adjacent blood vessel. ### Claim 28 (depends on 27) The apparatus of claim 27 wherein said reactive material in configured to expand in response to changes in physiological pH. ### Claim 29 An apparatus for treating vascular aneurysms, comprising: an occlusive support device comprising one or more support members forming a first end portion and a second end portion and defining a lumen therethrough; and a rounded mesh end cover member at said first end portion of said occlusive support device, said mesh end cover member comprised of at least one of said one or more support members, said rounded mesh end cover member forming a longitudinal sidewall; wherein said end cover member has openings and said end cover member comprises a reactive material that is configured to hydrate upon delivery of the device and to reduce the size of said openings; and an anchoring member at said second end portion; elongated members connecting the first end portion to the second end portion, said elongated members having a length selected to span across a blood vessel adjacent to a targeted aneurysm to connect the anchoring member to the end cover while minimizing resistance to blood flow through the adjacent blood vessel. ### Claim 30 (depends on 29) The apparatus of claim 29 wherein said reactive material in configured to expand in response to changes in physiological pH.