US 5,634,932 AGranted

Cantilever aneurysm clip system

AssigneeIndustrial & Scientific Designs, Ltd.

InventorFerenc J. Schmidt

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Abstract

A system for clipping an aneurysm which includes an aneurysm clip and an applicator that allows improved visual control during application. The aneurysm clip has a unitary, integral, cantilever spring and a unitary, integral, rigid ring. The cantilever spring has two arms, open in the unbiased position, provides a spring force, and defines the clipping force of the aneurysm clip. The cantilever spring also includes bulges positioned on the outer surface of the arms and a bend at the ends of the arms. The rigid ring slips over the arms, is retained by the bulges, and forces the arms together. The applicator includes a first leg including a pin adapted to engage the bend of the cantilever spring of the aneurysm clip and a second leg movable relative to the first leg which includes structure for engaging the rigid ring of the aneurysm clip. A scissoring or squeezing motion of the applicator handle moves the arms to slide the rigid ring on and off the arms of the cantilever spring of the aneurysm clip.

Claims27

Dependent claims

An apparatus for clipping tissue during surgery on a cerebral aneurysm comprising:

an aneurysm clip allowing visual control during application, providing a clipping force, and having:
(a) a unitary, single-piece, integral cantilever spring open in the unbiased position, providing a spring force, and including (i) a first arm with a first end, a free end, an outer surface, and a first bulge positioned on said outer surface, (ii) a second arm with a first end, a free end, and an outer surface, and (iii) a bend disposed between said first end of said first arm and said first end of said second arm, and
(b) a unitary, single-piece, integral rigid ring adapted to slip over and completely surround said first and second arms, retained by said bulge on said first arm, pressing said first and second arms together into a closed position against the spring force while preventing scissoring of said first and second arms;
and
an applicator allowing visual control during application of said aneurysm clip and having:
(a) a first leg including a pin adapted to engage said bend of said cantilever spring of said aneurysm clip;
(b) a second leg movable relative to said first leg and having means for engaging said rigid ring of said aneurysm clip and sliding said rigid ring on and off said first and second arms, said first and second legs positioned adjacent one side of said aneurysm clip rather than around said aneurysm clip thereby reducing visual obstruction;
and
means attached to said first leg and to said second leg for moving said second leg relative to said first leg.

6 more elements

An aneurysm clip allowing visual control during application and providing a clipping force, said aneurysm clip comprising:

a monolithic cantilever spring, produced without any machining operation requiring at least one of flow and removal of material, open in the unbiased position, providing a spring force, and having:
(a) a first arm with a first end, a free end, an outer surface, and a first bulge positioned intermediate said first end and said free end on said outer surface,
(b) a second arm with a first end, a free end, and an outer surface, and
(c) a bend disposed between said first end of said first arm and said first end of said second arm;
and
a monolithic rigid ring adapted to slip over and completely surround said first and second arms, retained by said first bulge on said first arm, pressing said first and second arms together into a closed position against the spring force while preventing scissoring of said first and second arms.

3 more elements

Dependencies are inferred from the claim text.