# US 9,833,307 B2 · IVC filter with translating hooks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,833,307 B2 - Document ID: US9833307B2 - Status: Granted - Kind: B2 - Application number: 15/289,859 - Filed: 2016-10-10 - Published: 2017-03-23 - Granted: 2017-12-05 - Earliest claimed: 2002-02-20 - Assignees: C. R. Bard, Inc. - Applicants: C. R. Bard, Inc. - Inventors: Andrzej J. Chanduszko; Scott L. Randall; William R. Bratt - Web page: https://patentgrep.com/patent/US9833307B2 ## CPC - A61F 2/0105: {Open ended, i.e. legs gathered only at one side} - A61F 2/0108: {Both ends closed, i.e. legs gathered at both ends} - A61F 2002/016: {made from wire-like elements} - A61F 2002/018: {made from tubes or sheets of material, e.g. by etching or laser-cutting} - A61F 2210/0004: bioabsorbable - A61F 2210/0014: using shape memory or superelastic materials, e.g. nitinol - A61F 2220/0016: with sharp anchoring protrusions, e.g. barbs, pins, spikes - A61F 2230/0008: elliptical or oval - A61F 2230/005: Rosette-shaped, e.g. star-shaped - A61F 2230/008: paraboloidal - A61F 2250/0067: Means for introducing or releasing pharmaceutical products into the body - A61F 2310/00017: Iron- or Fe-based alloys, e.g. stainless steel - A61F 2310/00107: Palladium or Pd-based alloys - A61F 2310/00113: Silver or Ag-based alloys - A61F 2310/00143: Iridium or Ir-based alloys - A61F 2310/00149: Platinum or Pt-based alloys - A61F 2310/00155: Gold or Au-based alloys - 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) ## Abstract A filter with translating hooks is described. The filter can include strut members having first and second struts connected by a connecting portion. A translating hook is disposed adjacent the connecting portion at the strut members, the hook including a first elongate member attached at one end to the first strut and a second elongate member attached at one end to a second strut, the opposite ends of the elongate members connected together to define a tip. The translating hooks are configured to bend toward a central axis of the filter when the filter is in a collapsed configuration for delivery to a blood vessel and recovery from a blood vessel, and away from the central axis of the filter when the filter is in an expanded configuration within a blood vessel such that the hooks engage a vessel wall. ## Claims ### Claim 1 A filter comprising: a hub disposed on the central longitudinal axis of the filter; an appendage comprising: a first leg connected to the hub and a second leg connected to the hub; a strut member comprising first and second struts wherein each strut has a first end and a second end, the second ends of each strut are joined together through a first connecting portion, the first end of the first strut connects to the first leg through a second connecting portion, the first end of the second strut connects to the second leg through a third connecting portion, a biased hook-connected between the first strut and the second struts, wherein the filter has an expanded configuration with a perimeter measured orthogonal to the longitudinal axis and a retracted configuration with a perimeter measured orthogonal to the longitudinal axis smaller than the expanded configuration longitudinal perimeter. ### Claim 2 (depends on 1) The filter of claim 1 wherein the legs, struts, and connecting portion of an appendage are continuous. ### Claim 3 (depends on 2) The filter of claim 2 comprising two, three, four, five, or six appendages. ### Claim 4 (depends on 3) The filter of claim 3 wherein the hub further comprises a retrieval member. ### Claim 5 (depends on 4) The filter of claim 4 wherein the connection portions are adjacent the filter perimeter in the expanded configuration. ### Claim 6 (depends on 5) The filter of claim 5 wherein the biased hook is oriented toward the longitudinal axis in the retracted configuration. ### Claim 7 (depends on 6) The filter of claim 6 wherein the biased hook is oriented away from the longitudinal axis in the expanded configuration. ### Claim 8 (depends on 7) The filter of claim 7 wherein a biased hook is positioned adjacent to the first; second; first and second; second and third; or the first, second, and third connecting portions. ### Claim 9 (depends on 8) A method comprising: anchoring the filter of claim 8 by introducing the filter in the retracted configuration into a blood vessel lumen; and expanding the filter to the expanded configuration rotating at least one hook tip outward into the blood vessel wall. ### Claim 10 (depends on 9) The method of claim 9 further comprising retrieving the filter by compressing the filter back into the retracted configuration to rotate the hook tip inward out of the wall. ### Claim 11 (depends on 10) The method of claim 10 wherein compressing comprises moving the filter into a recovery catheter. ### Claim 12 (depends on 1) The filter of claim 1 comprising two, three, four, five, or six appendages. ### Claim 13 (depends on 12) The filter of claim 12 wherein the connection portions are adjacent the filter perimeter in the expanded configuration. ### Claim 14 (depends on 13) The filter of claim 13 wherein the biased hook is oriented toward the longitudinal axis in the retracted configuration. ### Claim 15 (depends on 14) The filter of claim 14 wherein the biased hook is oriented away from the longitudinal axis in the expanded configuration. ### Claim 16 (depends on 15) The filter of claim 15 wherein a biased hook is positioned adjacent to the first; second; first and second; second and third; or the first, second, and third connecting portions. ### Claim 17 (depends on 1) A method comprising: anchoring the filter of claim 1 by introducing the filter in the retracted configuration into a blood vessel lumen; and expanding the filter to the expanded configuration rotating at least one hook tip outward into the blood vessel wall. ### Claim 18 (depends on 17) The method of claim 17 further comprising retrieving the filter by compressing the filter back into the retracted configuration to rotate the hook tip inward out of the wall. ### Claim 19 (depends on 18) The method of claim 18 wherein compressing comprises moving the filter into a recovery catheter. ### Claim 20 (depends on 1) The filter of claim 1 wherein the biased hook is positioned adjacent the first connecting portion with a first end of the biased hook connected to an interior portion of the first strut and a second end of the biased hook connected to an interior portion of the second strut.