US 7,377,932 B2 · Embolic coil delivery system with mechanical release mechanism

Abstract

A medical device for placing an embolic device at a predetermined site within a vessel of the body including a delivery catheter and a flexible pusher member having a lumen therethrough and being slidably disposed within the lumen of the catheter. An embolic device is retained within the delivery catheter by a mechanical interlocking mechanism which includes an engagement member which is attached to the distal end of the pusher member and extends through a retaining ring at the proximal end of the embolic device. A detachment member extends through an aperture at the distal end of the engagement member thereby locking the embolic device onto the pusher member. When the embolic device is advanced to the predetermined site within the vessel, the detachment member is withdrawn from the aperture to thereby release the embolic device at the treatment site.

Claims18

Dependent claims

A vasooclusive embolic device deployment system for use in placing an embolic device at a predetermined site within a vessel comprising:

an elongated flexible deployment catheter having a lumen extending therethrough and having proximal and distal ends;
an elongated pusher member having a lumen extending therethrough and having proximal and distal ends and being slidably disposed within the lumen of the deployment catheter;
an embolic device having a retaining ring at the proximal end thereof;
an engagement member fixedly attached to the distal end of the pusher member and having an aperture extending through the distal end portion thereof, the distal end portion of said engagement member that defines the aperture extending through said retaining ring;
and,
an elongated detachment member extending from a position proximal of the proximal end of the pusher member, through the lumen of the pusher member and through the aperture of the engagement member such that when the detachment member is pulled proximally the distal end of the detachment member is withdrawn from the aperture of the engagement member to thereby release the embolic device.

3 more elements

A vasooclusive embolic device deployment system for use in placing an embolic device at a predetermined site within a vessel comprising:

an elongated flexible deployment catheter having a lumen extending therethrough and having proximal and distal ends;
an elongated pusher member having proximal and distal ends and being slidably disposed within the lumen of the deployment catheter;
an embolic device having a retaining ring at the proximal end thereof;
an engagement member fixedly attached to the distal end of the pusher member and having an aperture extending through the distal end portion thereof, the distal end portion of said engagement member that defines the aperture extending through said retaining ring of the embolic device;
and,
an elongated detachment member extending from a position proximal of the deployment catheter, through the lumen of the catheter and through the aperture of the engagement member such that when the detachment member is pulled proximally the distal end of the detachment member is withdrawn from the aperture of the engagement member to thereby release the embolic device.

3 more elements

Dependencies are inferred from the claim text.

Embolic coil delivery system with mechanical release mechanism

Life of this patent

Embolic coil delivery system with mechanical release mechanism

Life of this patent

Abstract

Claims18