Medical implant detachment systems and methods

US8221483B2 · kind B2 · utility

Assignees

• Stryker Corporation · US
• Stryker NV Operations Limited · IE

Inventors

• Russell Ford · Palo Alto, US
• Scott A. McGill · San Ramon, US
• Clifford Teoh · Los Altos, US
• Michael Williams · Dover, US
• Kamal Ramzipoor · Fremont, US
• Like Que · Livermore, US
• Ann Huang · Fremont, US
• Elena Oo · Fremont, US
• Christina Ma · Fremont, US
• Stella Chu · Fremont, US

Key dates

• Filing date: May 16, 2008
• Grant date: Jul 17, 2012
• Expiry date: Oct 14, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2017/12063
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.