STRETCH RESISTANT THERAPEUTIC DEVICE

• US 20120035648A1
• Filed: 10/03/2011
• Published: 02/09/2012
• Est. Priority Date: 07/23/2002
• Status: Active Grant

• Current Assignee: DePuy Synthes Products LLC (Johnson & Johnson)
• Original Assignee: Micrus Corporation (Johnson & Johnson)
• Inventors: WILSON, Peter, LEOPOLD, Eric, DESAI, Rupesh K.
• Granted Patent: US 8,523,811 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• 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 17/12099 characterised by the location of the occluder
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• 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 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/00955 thermoplastic
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/12068 detachable by heat

Abstract

A vasoocclusive coil is reinforced with a stretch resistant member to improve safety during retraction of the coil. The stretch resistant member is fixedly attached at one end to the vasoocclusive coil, and the other end of the stretch resistant member is detachably mounted to an elongated pusher member to allow for placement and release of the vasoocclusive coil within the patient'"'"'s vasculature.

Claims

1. An apparatus for release and deployment of a stretch resistant therapeutic device within a patient'"'"'s vasculature from an elongated pusher member, comprising:

a vasoocclusive coil having a proximal end and a distal end, said vasoocclusive coil defining a lumen between said proximal and distal ends;

a stretch resistant member extending through said lumen of said vasoocclusive coil, said stretch resistant member having a distal end fixedly attached to said distal end of said vasoocclusive coil, and said stretch resistant member having a proximal end looped about said proximal end of said vasoocclusive coil; and

a severable member detachably connected to said proximal end of said vasoocclusive coil configured to detachably mount said vasoocclusive coil to a distal end of an elongated pusher member to allow for placement of the vasoocclusive coil within the patient'"'"'s vasculature.

2. The apparatus of claim 1, wherein said stretch resistant member is formed of a primary wind.

3. The apparatus of claim 1, wherein said stretch resistant member is formed of a stranded material.

4. The apparatus of claim 1, wherein said stretch resistant member is a fiber formed from a polymer.

5. The apparatus of claim 1, wherein said stretch resistant member is a fiber formed from a polymer selected from the group consisting of an ethylene-octene copolymer, polypropylene, and polyethylene.

6. The apparatus of claim 1, wherein said stretch resistant member is radiopaque.

7. The apparatus of claim 5, wherein the distal end of said vasoocclusive coil is fixedly attached to the distal end of the stretch resistant member by heating of the distal end of the stretch resistant member.

8. An apparatus for release and deployment of a stretch resistant therapeutic device within a patient'"'"'s vasculature, comprising:

a vasoocclusive coil having a proximal end and a distal end, said vasoocclusive coil defining a lumen between said proximal and distal ends;

a stretch resistant member extending through said lumen of said vasoocclusive coil, said stretch resistant member having a distal end fixedly attached to said distal end of said vasoocclusive coil, and said stretch resistant member having a proximal end looped about said proximal end of said vasoocclusive coil; and

an elongated pusher member having a distal end adjacent to said proximal end of said vasoocclusive coil, said proximal end of said vasoocclusive coil being detachably mounted to the distal end of the elongated pusher member to allow for placement of the vasoocclusive coil within the patient'"'"'s vasculature.

9. The apparatus of claim 8, wherein said displaced coil segment of said vasoocclusive coil is detachably mounted to said elongated pusher member by a severable member.

10. The apparatus of claim 8, wherein said stretch resistant member is formed of a primary wind.

11. The apparatus of claim 8, wherein said stretch resistant member is formed of a stranded material.

12. The apparatus of claim 8, wherein said stretch resistant member is a fiber formed from a polymer.

13. The apparatus of claim 8, wherein said stretch resistant member is a fiber formed from a polymer selected from the group consisting of an ethylene-octene copolymer, polypropylene, and polyethylene.

14. The apparatus of claim 8, wherein said stretch resistant member is radiopaque.

15. The apparatus of claim 13, wherein the vasoocclusive coil is attached to the first end of the stretch resistant member by heating of the end of the fiber.