# US 11,992,220 B2 · Occlusive medical device with fixation members > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,220 B2 - Document ID: US11992220B2 - Status: Granted - Kind: B2 - Application number: 17/708,864 - Filed: 2022-03-30 - Published: 2022-07-14 - Granted: 2024-05-28 - Earliest claimed: 2018-03-29 - Assignees: Boston Scientific Scimed, Inc. - Applicants: Boston Scientific Scimed, Inc. - Inventors: Joshua Mark Inouye; Brian Joseph Tischler - Web page: https://patentgrep.com/patent/US11992220B2 ## CPC - A61B 17/12122: {within the heart (for closing a cardiac septal defect A61B17/0057)} - A61B 17/12031: {complete occlusion} - 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 2017/00243: {cardiac} - A61B 2017/00526: {Methods of manufacturing} - A61B 2017/00579: {Barbed implements} - A61B 2017/00867: {shape memory effect} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An example occlusive implant is disclosed. The example occlusive implant includes an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein one or more of the plurality of strut members includes a first twisted portion and a face portion. The occlusive implant also includes a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members. ## Claims ### Claim 1 An occlusive implant, comprising: an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein one or more of the plurality of strut members includes a first twisted portion, a second twisted portion, and a face portion extending therebetween, wherein in the expanded configuration, an entirety of the face portion extends linearly between the first twisted portion and the second twisted portion; and a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members; wherein in the collapsed configuration, a first plurality of fixation members disposed along a first face portion are longitudinally offset and circumferentially interdigitated with a second plurality of fixation members disposed along an adjacent second face portion. ### Claim 2 (depends on 1) The occlusive implant of claim 1, wherein the plurality of fixation members and the expandable framework are formed from a unitary tubular member. ### Claim 3 (depends on 1) The occlusive implant of claim 1, wherein one or more of the plurality of fixation members extends radially away from the face portion. ### Claim 4 (depends on 1) The occlusive implant of claim 1, wherein each of the plurality of strut members includes 8 or more fixation members disposed thereon. ### Claim 5 (depends on 1) The occlusive implant of claim 1, wherein the plurality of fixation members are positioned adjacent to the first and second twisted portion of each of the strut members. ### Claim 6 (depends on 1) The occlusive implant of claim 1, wherein the plurality of fixation members are formed by laser cutting. ### Claim 7 (depends on 1) The occlusive implant of claim 1, wherein the first and second twisted portions are formed by a heat setting the one or more of the plurality of strut members. ### Claim 8 (depends on 1) The occlusive implant of claim 1, wherein the expandable framework comprises a shape-memory material. ### Claim 9 (depends on 1) The occlusive implant of claim 1, wherein in the expanded configuration, the expandable framework defines an enclosed volume. ### Claim 10 An occlusive implant, comprising: an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein one or more of the plurality of strut members includes a first twisted portion, a second twisted portion, and a face portion extending therebetween, wherein in the expanded configuration, an entirety of the face portion extends linearly between the first twisted portion and the second twisted portion; a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members, each fixation member having a first end fixed to the strut member and a second free end extending radially away from the strut member; and an occlusive member disposed along an outer surface of the expandable framework; wherein in the collapsed configuration, a first plurality of fixation members disposed along a first face portion are longitudinally offset and circumferentially interdigitated with a second plurality of fixation members disposed along an adjacent second face portion. ### Claim 11 (depends on 10) The occlusive implant of claim 10, wherein the plurality of fixation members and the expandable framework are formed from a unitary tubular member. ### Claim 12 (depends on 10) The occlusive implant of claim 10, wherein an entirety of one or more of the plurality of fixation members defines a curve. ### Claim 13 (depends on 10) The occlusive implant of claim 10, wherein each of the plurality of strut members includes four or more fixation members disposed thereon. ### Claim 14 (depends on 10) The occlusive implant of claim 10, wherein the second free end of one or more of the plurality of fixation members defines a point. ### Claim 15 (depends on 10) The occlusive implant of claim 10, wherein the occlusive member extends circumferentially around the outer surface of the occlusive member. ### Claim 16 (depends on 10) The occlusive implant of claim 10, wherein at least a portion of the plurality of fixation members extend through an aperture formed in the occlusive member. ### Claim 17 (depends on 10) The occlusive implant of claim 10, wherein in the expanded configuration, the expandable framework defines an enclosed volume. ### Claim 18 An occlusive implant, comprising: an expandable framework configured to shift between a collapsed configuration and an expanded configuration, wherein the expandable framework includes a plurality of strut members circumferentially spaced around a longitudinal axis of the expandable framework, wherein some of the plurality of strut members include a first twisted portion, a second twisted portion, and a face portion extending therebetween, wherein in the expanded configuration, the first and second twisted portions on a first strut member twist in a first direction, and the first and second twisted portions on a second strut member twist in a second direction opposite the first direction, wherein the first and second strut members are adjacent one another; and a plurality of fixation members disposed along the face portion of one or more of the plurality of strut members. ### Claim 19 (depends on 18) The occlusive implant of claim 18, wherein the expandable framework comprises a shape-memory material. ### Claim 20 (depends on 18) The occlusive implant of claim 18, wherein in the expanded configuration, the expandable framework defines an enclosed volume.