Thermal Detachment System For Implantable Devices

• US 20160317156A1
• Filed: 07/13/2016
• Published: 11/03/2016
• Est. Priority Date: 08/25/2004
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Fitz, Matthew, Gulachenski, Joseph
• Granted Patent: US 10,413,302 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• 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 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• 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 17/12154 having stretch limiting means
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00637 for sealing trocar wounds through abdominal wall
• CPC Class Codes: A61B 2017/1205 Introduction devices
• 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
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument

Abstract

The present invention provides for implant device delivery apparatuses and related methods of use. The delivery systems of the present invention incorporate a stretch resistant tube that advantageously makes the implant device, such as an embolic coil, stretch resistant

Claims

1. An implant device delivery system comprising:

a delivery pusher having a proximal end and a distal end;

a stretch resistant tube coupled to the distal end of the delivery pusher;

a heating element coupled to the proximal end of the stretch resistant tube; and

an implant device coupled to the stretch resistant tube distal from the heating element.

2. The implant device delivery system of claim 1, wherein the heating element is disposed on an exterior surface of the stretch resistant tube.

3. The implant device delivery system of claim 1, further comprising:

a positive electrical wire coupled to the heating element; and

a negative electrical wire coupled to the heating element;

wherein the positive electrical wire and the negative electrical wire are configured to apply a current to the heating element.

4. The implant device delivery system of claim 3, further comprising a power source coupled to the positive electrical wire and the negative electrical wire.

5. The implant device delivery system of claim 1, further comprising an atraumatic distal end.

6. The implant device delivery system of claim 1, wherein the implant device comprises a coil.

7. The implant device delivery system of claim 1, wherein the delivery pusher comprises a hollow tube.

8. The implant device delivery system of claim 1, wherein the delivery pusher comprises a solid core wire.

9. The implant device delivery system of claim 1, wherein the delivery pusher comprises a hollow tube and a flexible coil.

10. The implant device delivery system of claim 1, wherein the delivery pusher comprises a material chosen from the group consisting of plastic, steel, platinum, and steel coils.

11. The implant device delivery system of claim 1, wherein the stretch resistant tube comprises a hollow tube.

12. The implant device delivery system of claim 1, wherein the stretch resistant tube comprises a solid member.

13. The implant device delivery system of claim 1, wherein the stretch resistant tube is formed from a polymer.

14. The implant device delivery system of claim 1, wherein the heating element is formed from a material chosen from the group consisting of tantalum, tungsten, steel, platinum, and mangalin.

15. The implant device delivery system of claim 1, wherein the heating element comprises a structure chosen from the group consisting of a coil, a band, a pipe, and a hypotube.

16. The implant device delivery system of claim 1, further comprising an insulting sleeve surrounding the heating element.

17. The implant device delivery system of claim 1, further comprising a compressive spring configured to detach the implant device from the implant device delivery system.

18. An implant device delivery system comprising:

a delivery pusher comprising a proximal end, a distal end, a lumen therebetween, and a core wire disposed in the lumen;

a stretch resistant tube coupled to the distal end of the delivery pusher;

a heating element disposed within the lumen of the delivery pusher and formed by a positive electrical wire, a negative electrical wire, and the core wire; and

an implant device coupled to the stretch resistant tube distal from the heating element.

19. The implant device delivery system of claim 18, further comprising a power source coupled to the positive electrical wire and the negative electrical wire, the positive electrical wire and the negative electrical wire being coupled to the core wire.

20. The implant device delivery system of claim 18, wherein the implant device comprises a coil.

21. The implant device delivery system of claim 18, further comprising a compressive spring coupled to the stretch resistant tube proximal to the implant device, wherein the compressive spring is configured to detach the implant device from the implant device delivery system.

22. The implant device delivery system of claim 18, further comprising an atraumatic distal end.