Patella cutting clamp

Details Patella cutting clamp Patella cutting clamp

1991-04-12

1992-04-28

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 82, 606 87, A61F 238

Patent

active

051084015

ABSTRACT:
A patella cutting clamp comprises a pair of jaw members joined together in scissors-like relation for pivotal movement relative to each other about a pivot axis intermediate their ends. Each jaw member has a handle portion extending in one direction from the pivot axis and a jaw portion extending in the other direction. The jaw portions have edges facing each other that are shaped for engagement with opposite borders of a patella. Teeth along the patella-gripping edges grip and hold the patella firmly. Saw guide slots in the jaw portions lying in a common plane guide the saw when the saw cut is made. A patella elevator member is attached to the jaw members for movement along the pivot axis and has a platform portion adapted to engage the anterior aspect of the patella. A mechanism is provided for establishing and maintaining a predetermined position of the elevator member relative to the jaw members and thereby positioning the patella at a predetermined position relative to the saw guide slots. Another mechanism holds the jaw members in an adjusted position relative to each other with the jaw portions engaging and holding the patella.

REFERENCES:
patent: 1676574 (1928-07-01), Ostermeier
patent: 2566626 (1951-09-01), Otto
patent: 4462403 (1984-07-01), Martin
patent: 4633862 (1987-01-01), Petersen
patent: 4722338 (1988-02-01), Wright et al.
patent: 4777948 (1988-10-01), Wright
patent: 5019081 (1991-05-01), Watanabe

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