Cantilever aneurysm clip system

Details Cantilever aneurysm clip system Cantilever aneurysm clip system

1995-10-10

1997-06-03

Buiz, Michael

Surgery

Instruments

Surgical mesh, connector, clip, clamp or band

606142, A61B 1708, A61B 1704

Patent

active

056349327

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.

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Mizuho Ikakogyo Co. Catalog, pp. 2-7 (Apr., 1995).
AESCULAP (Aneurysm-Clip System) Brochure, 2 pages (1995).
AESCULAP (Forceps) Brochure, 4 pages (1995).
Handbook of Spring Design, p. 31 (Spring Manufacturers Institute 1981).
AESCULAP.RTM. Catalog, 2 pages (1992).
"Spring Design Data," Section 4, p. 4 (AMETEK, Inc. 1964).
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Axel Perneczky, M.D. and Georg Fries, M.D., "Use of a new aneurysm clip with an inverted-spring mechanism to facilitate visual control during clip application," J. Neurosurg, vol. 82, pp. 898-899 (May, 1995).

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