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US 5,350,397 AGranted
Axially detachable embolic coil assembly
AssigneeTarget Therapeutics, Inc.
InventorsThomas J. Palermo, Phong Pham
Life of this patent
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Abstract
This invention is a surgical instrument and specifically is a device for delivering an embolic coil to a selected site within a vessel in a human body via use of a catheter. In particular, the device involves an embolic coil having an enlarged member, such as a ball attached thereto which coil is released by forcing the enlarged member through an aperture in a socket situated on the distal end of a pusher assembly.
Claims7
A pusher-coil assembly for use in occluding a selected site within a vessel comprising:
- (a) a vasoocclusive coil having a proximal end and a distal end and having an enlarged member with a diameter, said enlarged member fixedly attached to the coil's proximal end;
- (b) a pusher housing having a distal end and having a socket at its distal end, said socket having a throat aperture diameter smaller than the diameter of the enlarged member within which the enlarged member is held;
- and
- (c) a plunger located within the pusher housing, said plunger axially movable relative to the pusher housing and coil from a first position to a second position, which axial movement pushes the coil and the enlarged member through the socket throat and thus uncouple the coil from the pusher housing.
1 more element
Dependencies are inferred from the claim text.