# US 12,178,439 B2 · Embolic devices for occluding body lumens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,439 B2 - Document ID: US12178439B2 - Status: Granted - Kind: B2 - Application number: 16/679,641 - Filed: 2019-11-11 - Published: 2021-05-13 - Granted: 2024-12-31 - Earliest claimed: 2019-11-11 - Assignees: Stryker Corporation; Stryker European Operations Limited - Applicants: Stryker Corporation; Stryker European Operations Limited - Inventors: Andrew S. Lee; Clifford Teoh; Hancun Chen; Jinhoon Park - Web page: https://patentgrep.com/patent/US12178439B2 ## CPC - A61B 17/12031: {complete occlusion} - A61B 17/12113: {within an aneurysm} - A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)} - A61B 17/12145: {having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526)} - A61B 17/12168: {having a mesh structure (A61B17/1214 takes precedence)} - A61B 17/12172: {having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526)} - A61M 25/0133: {Tip steering devices} - A61B 2017/00292: {mounted on or guided by flexible, e.g. catheter-like, means} - A61M 2025/0163: {Looped catheters} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract An embolic device for placement in a body lumen, includes: a first segment having a first linear configuration when located inside a catheter, the first segment being configured to form a first three-dimensional structure when outside the catheter, wherein the first three-dimensional structure defines a cavity; and a second segment extending from the first segment, the second segment having a second linear configuration when located inside the catheter, the second segment being configured to form a second three-dimensional structure when outside the catheter; wherein the cavity of the first three-dimensional structure is configured to accommodate at least a majority of the second three-dimensional structure. ## Claims ### Claim 1 An embolic device for placement in a body lumen, the embolic device comprising: a first segment having a first curvilinear configuration with a first curvature when located inside a catheter, the first segment being configured to form a first three-dimensional structure when outside the catheter; and a second segment extending from the first segment, the second segment having a second curvilinear configuration when located inside the catheter, the second segment being configured to form a second three-dimensional structure when outside the catheter; wherein the first segment has a cross section with a first cross-sectional width measured in a direction that is perpendicular to a first longitudinal axis of the first segment when the first segment is inside the catheter; wherein the first segment is configured to go through a first change and a second change when the first segment is outside the catheter, wherein in the first change, the cross-section of the first segment increases from the first cross-sectional width to a second cross-sectional width greater than the first cross-sectional width, and wherein in the second change, the first segment changes shape to have a second curvature higher than the first curvature, and wherein the first segment configured to form the first three-dimensional structure is distal to the second segment configured to form the second three-dimensional structure when the embolic device is inside the catheter such that the first segment is configured to exit the catheter in the body lumen before the second segment, wherein the first three-dimensional structure formed by the first segment comprises at least two non-parallel first loops, wherein the second three-dimensional structure formed by the second segment comprises at least two non-parallel second loops, and wherein each of the first non-parallel first loops of the first three-dimensional structure is larger than the non-parallel second loops of the second three-dimensional structure. ### Claim 2 (depends on 1) The embolic device of claim 1, wherein a first loop curvature of one of the first loops of the first three-dimensional structure is less than a second loop curvature of one of the second loops of the second three-dimensional structure. ### Claim 3 (depends on 1) The embolic device of claim 1, wherein the first segment has a first thickness, and the second segment has a second thickness that is less than the first thickness. ### Claim 4 (depends on 1) The embolic device of claim 1, wherein the first segment and the second segment form a unity configuration. ### Claim 5 (depends on 1) The embolic device of claim 1, wherein loop widths, braid widths, braid thicknesses, braid angles, or any combination of the foregoing, of the respective ones of the first loops increase or decrease along a length of the first segment forming the first three-dimensional structure; and/or wherein loop widths, braid widths, braid thicknesses, braid angles, or any combination of the foregoing, of the respective ones of the second loops increase or decrease along a length of the second segment forming the second three-dimensional structure. ### Claim 6 (depends on 1) The embolic device of claim 1, wherein the at least two non-parallel first loops comprise at least four first loops L1, L2, L3, L4 with different respective pitch angles; and/or wherein the at least two non-parallel second loops comprise at least four second loops L′1, L′2, L′3, L′4 with different respective pitch angles. ### Claim 7 (depends on 1) The embolic device of claim 1, wherein the at least two non-parallel first loops of the first three-dimensional structure form a first angle, and wherein the at least two non-parallel second loops of the second three-dimensional structure form a second angle that is less than the first angle. ### Claim 8 (depends on 1) The embolic device of claim 1, wherein the first longitudinal axis of the first segment extends through a first body structure of the first segment. ### Claim 9 (depends on 1) The embolic device of claim 1, wherein the first segment comprises a flat braided segment extending continuously at least along a majority of a longitudinal length of the first segment, and wherein a major plane of the flat braided segment is parallel to the first longitudinal axis of the first segment when the first segment is outside the catheter. ### Claim 10 An embolic device for placement in a body lumen, the embolic device comprising: a first segment having a first linear configuration when located inside a catheter, the first segment being configured to form a first three-dimensional structure when outside the catheter; and a second segment extending from the first segment, the second segment having a second linear configuration when located inside the catheter, the second segment being configured to form a second three-dimensional structure when outside the catheter; wherein the first segment comprises a first braided segment forming at least a majority of the first three-dimensional structure, and the second segment comprises a second braided segment forming at least a majority of the second three-dimensional structure; wherein the first braided segment is distal to the second braided segment when the first braided segment and the second braided segment are inside the catheter such that the first braided segment is configured to exit the catheter in the body lumen before the second braided segment, wherein the first braided segment has a maximum cross-sectional width that is larger than a maximum cross-sectional width of the second braided segment when the first braided segment and the second braided segment is outside the catheter, and wherein the first braided segment has a flat cross-sectional shape when the first braided segment is outside the catheter; wherein the first three-dimensional structure configured to be formed by the first braided segment that is distal to the second braided segment comprises at least two non-parallel first loops, wherein the second three-dimensional structure configured to be formed by the second braided segment comprises at least two non-parallel second loops, wherein each of the non-parallel first loops is larger than the non-parallel second loops. ### Claim 11 (depends on 10) The embolic device of claim 10, wherein the maximum cross-sectional width of the first braided segment is measured in a direction that is perpendicular to a longitudinal axis of the first braided segment. ### Claim 12 (depends on 10) The embolic device of claim 10, wherein the first braided segment comprises a flat braided segment extending continuously at least along a majority of a longitudinal length of the first braided segment, and wherein a major plane of the flat braided segment is parallel to a longitudinal axis of the first segment when the first segment is outside the catheter. ### Claim 13 An embolic device for placement in a body lumen, the embolic device comprising: an elongated member having a proximal end and a distal end; wherein the elongated member comprises a first segment configured to form a first three-dimensional structure; wherein the elongated member comprises a second segment configured to form a second three-dimensional structure; wherein the first segment comprises a first braided segment forming at least a majority of the first three-dimensional structure, and the second segment comprises a second braided segment forming at least a majority of the second three-dimensional structure; and wherein the first braided segment of the elongated member is distal to the second braided segment of the elongated member when the elongated member is inside a catheter such that the first braided segment is configured to exit the catheter in the body lumen before the second braided segment, wherein the first braided segment comprises a first flat braided segment forming at least three non-parallel first braided loops when the first segment is outside the catheter, wherein the second braided segment comprises a second flat braided segment forming at least three non-parallel second braided loops when the second segment is outside the catheter, and wherein each of the non-parallel first braided loops is larger than the non-parallel second braided loops. ### Claim 14 (depends on 13) The embolic device of claim 13, wherein a first loop curvature of one of the non-parallel first braided loops of the first three-dimensional structure is less than a second loop curvature of one of the non-parallel second braided loops of the second three-dimensional structure. ### Claim 15 (depends on 13) The embolic device of claim 13, wherein the first segment has a first thickness, and the second segment has a second thickness that is less than the first thickness. ### Claim 16 (depends on 13) The embolic device of claim 13, wherein the first segment and the second segment form a unity configuration. ### Claim 17 (depends on 13) The embolic device of claim 13, wherein loop widths, braid widths, braid thicknesses, braid angles, or any combination of the foregoing, of the respective ones of the at least three non-parallel first braided loops increase or decrease along a length of the first segment forming the first three-dimensional structure; and/or wherein loop widths, braid widths, braid thicknesses, braid angles, or any combination of the foregoing, of the respective ones of the at least three non-parallel second braided loops increase or decrease along a length of the second segment forming the second three-dimensional structure. ### Claim 18 (depends on 13) The embolic device of claim 13, wherein the at least three non-parallel first braided loops of the first three-dimensional structure comprise at least four first loops L1, L2, L3, L4 with different respective pitch angles; and/or wherein the at least three non-parallel second braided loops of the second three-dimensional structure comprise at least four second loops L′1, L′2, L′3, L′4 with different respective pitch angles. ### Claim 19 (depends on 13) The embolic device of claim 13, wherein two of the non-parallel first braided loops of the first three-dimensional structure form a first angle, and wherein two of the non-parallel second braided loops of the second three-dimensional structure form a second angle that is less than the first angle. ### Claim 20 (depends on 13) The embolic device of claim 13, wherein the first flat braided segment extends continuously at least along a majority of a longitudinal length of the first segment, and wherein a major plane of the first flat braided segment is parallel to a longitudinal axis of the first segment when the first segment is outside the catheter.