Heated vascular occlusion coil development system

• US 6,277,126 B1
• Filed: 09/21/1999
• Issued: 08/21/2001
• Est. Priority Date: 10/05/1998
• Status: Expired due to Term

• Current Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Original Assignee: Cordis Neurovascular, Inc. (Johnson & Johnson)
• Inventors: Mitelberg, Vladimir, Jones, Donald K., Barry, David C.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): Priddy, Michael B.
• Application Number:
  US09/400,680
• Time in Patent Office: 700 Days
• Field of Search: 606/108, 606/178, 606/200, 606/205-208
• US Class Current: 606/108
• 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 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61B 2017/12068 detachable by heat

Abstract

An embolic coil deployment system for placing a coil at a preselected site within a vessel of the human body. The deployment system includes a heating element at the distal end of a delivery member and a heat responsive coupling for holding the coil during positioning of the coil and activation means for releasing the coil at a desired position within the vessel.

Claims

1. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member having a lumen extending therethrough and being positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member;

an energy transmission conductor extending through the lumen of the delivery member and extending from the proximal end to the distal end of the delivery member wherein said energy transmission conductor is an electrical conductor, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member adhesively bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, releasing its adhesive bond whereby upon applying energy through the energy transmission conductor to the heating element, the heating element causes the heat responsive coupling member to release the embolic coil at the pre-selected site.

2. A vascular occlusion coil deployment system as defined in claim 1, wherein said heat responsive coupling member between said heating element and said embolic coil is positioned within the lumen of said embolic coil.

3. A vascular occlusion coil deployment system as defined in claim 1, wherein said energy is electrical energy.

4. A vascular occlusion coil deployment system as defined in claim 1, wherein said heating element is an electrically heated element.

5. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member having a lumen extending therethrough and being positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member, wherein said heating element is an electrically heated coil;

an energy transmission conductor extending through the lumen of the delivery member and extending from the proximal end to the distal end of the delivery member, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member adhesively bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, releasing its adhesive bond whereby upon applying energy through the energy transmission conductor to the heating element, the heating element causes the heat responsive coupling member to release the embolic coil at the pre-selected site.

6. A vascular occlusion coil deployment system as defined in claim 5, wherein said heat responsive coupling member is formed of a solid material, wherein the yield strength is reduced at least 50 percent when heated to about 65 degrees Celsius, between said heating element and said embolic coil.

7. A vascular occlusion coil deployment system as defined in claim 6, wherein said solid material is formed of a polymer.

8. A vascular occlusion coil deployment system as defined in claim 6, wherein said solid material is formed of a metal alloy.

9. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member being positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member;

an energy transmission conductor extending through the lumen of the positioning member, wherein said energy transmission conductor is an electrical conductor, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, having a reduced adhesive force whereby upon applying energy through the energy transmission conductor to the heating element, the heating element causes the heat responsive coupling member to release the embolic coil at the pre-selected site.

10. A vascular occlusion coil deployment system as defined in claim 9, wherein said heat responsive coupling member between said heating element and said embolic coil is positioned within the lumen of said embolic coil.

11. A vascular occlusion coil deployment system as defined in claim 9, wherein said energy is electrical energy.

12. A vascular occlusion coil deployment system as defined in claim 9, wherein said heating element is an electrically heated element.

13. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member being positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member, wherein said heating element is an electrically heated coil;

an energy transmission conductor extending through the lumen of the positioning member, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, having a reduced adhesive force whereby upon applying energy through the energy transmission conductor to the heating element, the heating element causes the heat responsive coupling member to release the embolic coil at the pre-selected site.

14. A vascular occlusion coil deployment system as defined in claim 13, wherein said heat responsive coupling member is formed of a solid material, wherein the yield strength is reduced at least 50 percent when heated to about 65 degrees Celsius, between said heating element and said embolic coil.

15. A vascular occlusion coil deployment system as defined in claim 14, wherein said solid material is formed of a polymer.

16. A vascular occlusion coil deployment system as defined in claim 14, wherein said solid material is formed of a metal alloy.

17. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member being slidably positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member;

an energy transmission conductor extending through the lumen of the positioning member wherein said energy transmission conductor is an electrical conductor, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, softening thereby reducing its yield strength whereby upon applying energy through the energy transmission conductor to the heating element the heating element causes the heat responsive coupling member to break thereby releasing the embolic coil at the pre-selected site.

18. A vascular occlusion coil deployment system as defined in claim 17, wherein said heat responsive coupling member between said heating element and said embolic coil is positioned within the lumen of said embolic coil.

19. A vascular occlusion coil deployment system as defined in claim 17, wherein said energy is electrical energy.

20. A vascular occlusion coil deployment system as defined in claim 17, wherein said heating element is an electrically heated element.

21. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member being slidably positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member, wherein said heating element is an electrically heated coil;

an energy transmission conductor extending through the lumen of the positioning member, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, softening thereby reducing its yield strength whereby upon applying energy through the energy transmission conductor to the heating element the heating element causes the heat responsive coupling member to break thereby releasing the embolic coil at the pre-selected site.

22. A vascular occlusion coil deployment system as defined in claim 21, wherein said heat responsive coupling member is formed of a solid material, wherein the yield strength is reduced at least 50 percent when heated to about 65 degrees Celsius, between said heating element and said embolic coil.

23. A vascular occlusion coil deployment system as defined in claim 22, wherein said solid material is formed of a polymer.

24. A vascular occlusion coil deployment system as defined in claim 22, wherein said solid material is formed of a metal alloy.

25. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member having a lumen extending therethrough and being positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member;

a non-optical fiber energy transmission conductor extending through the lumen of the delivery member and extending from the proximal end to the distal end of the delivery member, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member adhesively bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, releasing its adhesive bond whereby upon applying energy through the energy transmission conductor to the heating element, the heating element causes the heat responsive coupling member to release the embolic coil at the pre-selected site.

26. A vascular occlusion coil deployment system as defined in claim 25, wherein said heating element is an electrically heated element.

27. A vascular occlusion coil deployment system as defined in claim 25, wherein said heat responsive coupling member is formed of a solid material, wherein the yield strength is reduced at least 50 percent when heated to about 65 degrees Celsius, between said heating element and said embolic coil.

28. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member being positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member;

a non-optical fiber energy transmission conductor extending through the lumen of the positioning member, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, having a reduced adhesive force whereby upon applying energy through the energy transmission conductor to the heating element, the heating element causes the heat responsive coupling member to release the embolic coil at the pre-selected site.

29. A vascular occlusion coil deployment system as defined in claim 28, wherein said heating element is an electrically heated element.

30. A vascular occlusion coil deployment system as defined in claim 28, wherein said heat responsive coupling member is formed of a solid material, wherein the yield strength is reduced at least 50 percent when heated to about 65 degrees Celsius, between said heating element and said embolic coil.

31. A vascular occlusion coil deployment system for use in placing a coil at a pre-selected site within a vessel comprising:

an elongated flexible positioning member having a lumen extending therethrough and having proximal and distal ends;

an embolic coil;

an elongated flexible delivery member being slidably positioned within the lumen of the positioning member and having proximal and distal ends;

a heating element mounted on the distal end of the delivery member;

a non-optical fiber energy transmission conductor extending through the lumen of the positioning member, said energy transmission conductor being coupled to said heating element; and

,

a heat responsive coupling member bonded to both the heating element and to the embolic coil, said heat responsive coupling member exhibits the characteristic of, upon being heated, softening thereby reducing its yield strength whereby upon applying energy through the energy transmission conductor to the heating element the heating element causes the heat responsive coupling member to break thereby releasing the embolic coil at the pre-selected site.

32. A vascular occlusion coil deployment system as defined in claim 31, wherein said heating element is an electrically heated element.

33. A vascular occlusion coil deployment system as defined in claim 32, wherein said heat responsive coupling member is formed of a solid material, wherein the yield strength is reduced at least 50 percent when heated to about 65 degrees Celsius, between said heating element and said embolic coil.