# US 11,432,809 B2 · Occlusive medical device with fabric retention barb > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,432,809 B2 - Document ID: US11432809B2 - Status: Granted - Kind: B2 - Application number: 15/965,120 - Filed: 2018-04-27 - Published: 2018-11-01 - Granted: 2022-09-06 - Earliest claimed: 2017-04-27 - Assignees: Boston Scientific Scimed, Inc. - Applicants: Boston Scientific Scimed, Inc. - Inventors: Joshua Mark Inouye; Brian Joseph Tischler; Dennis A Peiffer - Web page: https://patentgrep.com/patent/US11432809B2 ## CPC - A61B 17/0057: {Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect (sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009)} - A61B 17/12031: {complete occlusion} - A61B 17/12122: {within the heart (for closing a cardiac septal defect A61B17/0057)} - 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 2017/00592: {Elastic or resilient implements} - A61B 2017/00623: {Introducing or retrieving devices therefor} - A61B 2017/00632: {Occluding a cavity, i.e. closing a blind opening} - A61B 2017/00867: {shape memory effect} - A61B 2017/00884: {enhancing wound closure} - A61B 2017/00893: {pharmaceutically effective} - A61B 2017/12095: {Threaded connection} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An occlusive implant system may include a catheter having a lumen extending from a proximal opening to a distal opening, a core wire slidably disposed within the lumen, and an occlusive implant having an expandable framework configured to shift between a collapsed configuration and an expanded configuration, and an occlusive element disposed on the expandable framework. The expandable framework may include a plurality of anchor members extending radially outward from the expandable framework, at least some of the plurality of anchor members each have a barb projecting circumferentially therefrom. The occlusive implant may be releasably connected to a distal portion of the core wire. ## Claims ### Claim 1 An occlusive implant, comprising: an expandable framework configured to shift between a collapsed configuration and an expanded configuration that is configured to conform to and to be in a sealing engagement with a lateral wall of a left atrial appendage; and an occlusive element disposed on the expandable framework; wherein the expandable framework includes a plurality of anchor members extending radially outward from the expandable framework and through the occlusive element, wherein each of the plurality of anchor members includes a proximal body portion and a distal tip portion that is adapted to engage tissue, wherein at least some of the plurality of anchor members each have a barb that projects circumferentially from the at least some of the plurality of anchor members at points proximal of their respective tip portions and distal of the occlusive element and is configured to secure the occlusive element to the expandable framework. ### Claim 2 (depends on 1) The occlusive implant of claim 1, wherein the body portion of each anchor member of the at least some of the plurality of anchor members is attached to the expandable framework at a base of its respective anchor member. ### Claim 3 (depends on 2) The occlusive implant of claim 2, wherein each barb includes a forward surface facing towards the tip portion of its respective anchor member, and a rear surface facing towards the base of its respective anchor member. ### Claim 4 (depends on 3) The occlusive implant of claim 3, wherein the rear surface is positioned at an obtuse angle to the body portion. ### Claim 5 (depends on 3) The occlusive implant of claim 3, wherein the forward surface is positioned at an obtuse angle to the body portion. ### Claim 6 (depends on 3) The occlusive implant of claim 3, wherein an intersection of the forward surface with the rear surface forms a barb tip, the barb tip being rounded. ### Claim 7 (depends on 1) The occlusive implant of claim 1, wherein each barb comprises a semi-elliptical nub. ### Claim 8 (depends on 1) The occlusive implant of claim 1, wherein the expandable framework and the plurality of anchor members are formed from a unitary tubular member. ### Claim 9 An occlusive implant system, comprising: a catheter having a lumen extending from a proximal opening to a distal opening; a core wire slidably disposed within the lumen; and an occlusive implant having an expandable framework configured to shift between a collapsed configuration and an expanded configuration that is configured to conform to and to be in a sealing engagement with a lateral wall of a left atrial appendage, and an occlusive element disposed on the expandable framework; wherein the expandable framework includes a plurality of anchor members extending radially outward from the expandable framework, and through the occlusive element, the plurality of anchor members each having a distal tip and a proximal body, wherein at least some anchor members of the plurality of anchor members are configured to secure the occlusive element to the expandable framework and each of the at least some of the plurality of anchor members have a barb that projects circumferentially therefrom at a point proximal of the distal tip and distal of the occlusive element; wherein the occlusive implant is releasably connected to a distal portion of the core wire. ### Claim 10 (depends on 9) The occlusive implant system of claim 9, wherein the occlusive implant is disposed within the lumen proximate the distal opening in the collapsed configuration. ### Claim 11 (depends on 9) The occlusive implant system of claim 9, wherein a tip portion of each of the plurality of anchor members extends towards a proximal end of the occlusive implant. ### Claim 12 (depends on 9) The occlusive implant system of claim 9, wherein the occlusive element extends distally past all of the plurality of anchor members. ### Claim 13 (depends on 9) The occlusive implant system of claim 9, wherein the plurality of anchor members each extend through the occlusive element. ### Claim 14 An occlusive implant, comprising: an expandable framework configured to shift between a collapsed configuration and an expanded configuration that is configured to conform to and to be in a sealing engagement with a lateral wall of a left atrial appendage; and an occlusive element disposed over an outer surface of the expandable framework; wherein the expandable framework includes a plurality of anchor members extending radially outward from the expandable framework and through the occlusive element; wherein at least some of the plurality of anchor members each have two barbs projecting circumferentially therefrom at points distal of the occlusive element and proximal of a distal tip of the at least some of the plurality of anchor members and are configured to secure the occlusive element to the expandable framework. ### Claim 15 (depends on 14) The occlusive implant of claim 14, wherein each barb comprises a semi-elliptical nub, each semi-elliptical nub on a particular anchor member extending in a common circumferential direction from the particular anchor member. ### Claim 16 (depends on 14) The occlusive implant of claim 14, wherein the two barbs extend in opposing circumferential directions from their respective anchor member. ### Claim 17 (depends on 14) The occlusive implant of claim 14, wherein a distal portion of the occlusive element is attached to the expandable framework and attachment of the distal portion of the occlusive element to the expandable framework is devoid of sutures and adhesives. ### Claim 18 (depends on 14) The occlusive implant of claim 14, wherein each of the plurality of anchor members has at least one barb projecting circumferentially therefrom.