Ratcheting compression device

Abstract

Abstract A ratcheting compression device (14) is provided which is very strong, which can be customized in length, which can be retightened periodically to maintain compression, which allows precise placement and alignment of bones with both grossly tuned compression and finely tuned compression, and in which only a limited inventory of parts is required. The two-piece compression device (14) comprises (a) a novel first piece (10) having a bone screw (16) located at a first end thereof and having a ratcheting means (18) located near the second end thereof and comprising teeth (20) having their crests (27) lying substantially in a plane and (b) a novel second piece (12) comprising an anti-rotation means which acts in cooperation with the ratcheting means (18) of the first piece (10) to compress two segments of bone together. In yet other embodiments, two embodiments of a driver are provided for quickly driving the stop onto the ratcheting means (18) to a desired extent. In a further embodiment, a customized method for compressing and fixing a first bone segment and a second bone segment together is provided.

Inventors

• 👤 Stanley E. Asnis
• 👤 John S. Crombie

Bibliographic Details