Vaso-occlusive device with attached polymeric materials

• US 6,287,318 B1
• Filed: 05/25/1999
• Issued: 09/11/2001
• Est. Priority Date: 02/13/1998
• Status: Expired due to Term

• Current Assignee: Target Therapeutics, Inc. (Boston Scientific Corporation)
• Original Assignee: Target Therapeutics, Inc. (Boston Scientific Corporation)
• Inventors: Aganon, Nestor, Villar, Francisco S.
• Primary Examiner(s): Recla, David O.
• Assistant Examiner(s): HO, TAN-UYEN THI
• Application Number:
  US09/318,018
• Time in Patent Office: 840 Days
• Field of Search: 606/191, 606/1, 606/104, 606/170, 606/32, 424/422, 424/423, 424/426
• US Class Current: 606/191
• CPC Class Codes: 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
• CPC Class Codes: A61B 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 17/12154 having stretch limiting means
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable, resorptive for implantable prostheses A61F2210/0004

Abstract

A device for occluding a space within the body, and particularly,the device usefle as a vaso-occlusive device. In partiular, the device typically comprises a metallic core or core member, and two polymeric conjuncts, often polymeric members, of differing thrombogenicity. Typically, the core member comprises a metallic helically-wound coil; the first polymeric member and second polymeric member are fibrous materials woven into a braid. The device may be placed at the desired site within a mammal to facilitate the formation of an occlusion. The device promotes the formation of scar tissue, healing tissue, or neocapillaries in vascular occlusions made by the device.

Claims

1. A vaso-occlusive implant with a size, shape, and configuration of such that it may be introduced and implanted into a mammalian blood vessel, the implant comprising in combination an elongated core member, a fibrous member attached to the elongated core member, the elongated core member having a proximal end and a distal end, the fibrous member comprised of a copolymer comprising a first polymeric material, and a second polymeric material different from the first polymeric material.

2. The vaso-occlusive device of claim 1 wherein the elongated core member is metallic.

3. The vaso-occlusive device of claim 2 wherein the metallic elongated core member comprises platinum.

4. The vaso-occlusive device of claim 1 wherein the elongated core member comprises a helical coil member.

5. The vaso-occlusive device of claim 1 wherein the fibrous member is woven into a braid exterior to the elongated core member.

6. The vaso-occlusive device of claim 1 wherein the fibrous member is tufted.

7. The vaso-occlusive device of claim 1 wherein the fibrous member is glued onto said elongated core member.

8. The vaso-occlusive device of claim 1 wherein said elongated core member proximal end comprises a mechanical joint adapted to join to a pusher wire.

9. The vaso-occlusive device of claim 1 wherein said elongated core member proximal end comprises an electrolytically severable joint.

10. The vaso-occlusive device of claim 4 further comprising a stretch-resisting member fixable attached to at least one of said proximal end and distal end.

11. The vaso-occlusive device of claim 1 wherein the elongated core member is comprised of a third polymeric material.

12. The vaso-occlusive device of claim 1 wherein the first polymeric material comprises a non-biodegradable polymeric material.

13. The vaso-occlusive device of claim 1 wherein the first polymeric material is a material selected from the group consisting of polyethyleneterephthalate, polyethylene, polypropylene, Nylon, and polyaramid.

14. The vaso-occlusive device of claim 1 wherein the second polymeric material comprises a biodegradable polymeric material.

15. The vaso-occlusive device of claim 1 wherein the second polymeric material is a material selected from the group consisting of polyglycolic acid, polylactic acid, cotton, and silk.

16. A vaso-occlusive device comprising a core member with a size, shape, and configuration of such that it may be introduced and implanted into a mammalian blood vessel, comprising a core member and a biodegradable fibrous material of a type promoting production of neo-capillaries in said blood vessel.