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US 4,706,660 AGranted
Patellar clamp
OwnerThomas D. Peterseninventor
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Abstract
Disclosed herein is a patellar clamp which includes a fixed jaw having a spike centrally disposed on a part spherical surface with this spike being axially aligned with a reciprocating plunger. The plunger is operated by a second handle pivotably disposed with respect to the first handle and spring biasing means between the handles biases them in a direction of separation of the plunger and spike. The inventive patellar clamp is utilized to install a patellar button onto a resected patella.
Claims6
A patellar clamp for installing a patella button on a resected posterior surface of a patella, comprising:
- (a) a body portion including a first handle fixedly extending therefrom, said body portion including a C-shaped structure having a bottom surface and a top opening;
- (b) said bottom surface having a convex surface with a fixation spike extending upwardly therefrom substantially centrally located thereon;
- (c) said top opening comprising one end of a linear bore through said body portion which is substantially coaxial with said fixation spike;
- (d) a second handle pivotably mounted to said body portion;
- (e) a plunger extending through said bore and including a first end facing said fixation spike and a second end with a slot receiving a distal end of said second handle;
- (f) whereby pivotal movement of said second handle with respect to said first handle causes linear reciprocation of said plunger in said bore.
3 more elements
Dependencies are inferred from the claim text.