SYSTEM FOR DETACHING AN OCCLUSIVE DEVICE WITHIN A MAMMALIAN BODY USING A SOLDERLESS, ELECTROLYTICALLY SEVERABLE JOINT

• US 20010049521A1
• Filed: 10/27/1999
• Published: 12/06/2001
• Est. Priority Date: 12/30/1994
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: David Kupiecki, Hong Doan, Ivan Sepetka, Michael Mariant, Pete Phong Pham, Son Gia, U. Hiram Chee
• Inventors: SEPETKA, IVAN, GIA, SON, PHAM, PETE PHONG, CHEE, U. HIRAM, DOAN, HONG, KUPIECKI, DAVID, MARIANT, MICHAEL
• Granted Patent: US 6,589,230 B2
• Time in Patent Office: Days
• US Class Current: 606/1
• 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 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61B 2018/1495 Electrodes being detachable from a support structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts

Abstract

This is a solderless sacrificial link between a detachable member which is placed at and is intended to remain at a desired site within the mammalian body and the core wire used to introduce the detachable member. The detachable member device may be one used to create emboli in the vascular system or may be of any other type deliverable into the human body and detached into an ionic aqueous environment, either for later removal or permanent placement.

Claims

1. A mammalian implant assembly comprising:

(a) a wire having an axis, a proximal end, a tapered distal section and a distal end, the wire having a single distal sacrificial region comprising a discrete, metallic link that is susceptible to electrolytic disintegration in an ionic medium, the wire not being susceptible to electrolytic disintegration proximal of said link, and

(b) a detachable implant joined to the wire without solder, the implant not being susceptible to electrolytic disintegration in an ionic medium.

2. The assembly of

claim 1

where the distal end of the wire has a constant diameter.

3. The assembly of

claim 1

additionally comprising a sleeve not susceptible to electrolytic disintegration joining the wire to the implant.

4. The assembly of

claim 3

where the sleeve is metallic.

5. The assembly of

claim 1

additionally comprising means for providing column strength to the distal section of the wire.