US 5,984,929 A · Fast detaching electronically isolated implant

Abstract

This is an implant for placement in the human body and an assembly for so placing that implant. Most desirably, it is an implant for use in the vasculature of the human body and is used to occlude some space in that vasculature as a portion of a treatment regimen. The implant itself is preferably a component of a deployment device using an electrolytically severable joint. The implant is electrically isolated from the electrolytically severable joint by a highly resistive or insulative layer. Such isolation and minimization of the conductive pathway from the placement apparatus to the body's fluids appears to enhance the susceptibility of the electrolytic joint to quick erosion and detachment of the implant from the deployment media. Although the implant itself is preferably a vaso-occlusive device, it may instead be a stent, a vena cava filter, or other implant which may be installed in this manner.

Claims16

Dependent claims

An implant assembly for placement of an implant in the human body comprising:

(a.) an implant member having a proximal end and a distal end, and
(b.) a wire having an electrolytically severable joint, said wire attached to said implant member proximal end, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member,
wherein said implant member is electrically isolated from said electrolytically severable joint by a continuous, insulative or highly resistive layer disposed on said wire proximal of said joint and a continuous, insulative or highly resistive layer disposed on said wire distal of said joint.

Dependencies are inferred from the claim text.

Fast detaching electronically isolated implant

Life of this patent

Fast detaching electronically isolated implant

Life of this patent

Abstract

Claims16