| 摘要 |
A joint or clamp for a surgical retraction system uses a pivot linkage tightening mechanism. The pivot link primarily pivots to move one arm of the clamp relative to the other arm of the clamp. The handle contacts the clamp body at a friction interface of small radius to the handle pivot axis so little frictional torque is generated during tightening of the clamp. A handle pivot pin mostly translates above the handle pivot axis. The handle pivot pin has a center section which is offset, and the handle pivot pin can be received in any of numerous circumferential positions to absorb the tolerance stack for the clamp, resulting in a consistent and precise tightening mechanism achieved by a small throw of a short handle.
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