Embolic coil delivery system with spring wire release mechanism

Details Embolic coil delivery system with spring wire release mechanism Embolic coil delivery system with spring wire release mechanism

2006-09-29

2010-10-26

Erezo, Darwin P (Department: 3773)

Surgery

Instruments

Internal pressure applicator

C606S191000, C623S001110

Reexamination Certificate

active

07819892

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 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 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. A kicker member which takes the form of a generally U-shaped wire spring which extends from the distal end of the pusher member and is biased so as to lift the retaining ring off of the engagement member to ensure the release of the embolic device when the detachment member is withdrawn from the aperture of the engagement member.

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