Importance

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Abstract

A clamp is used to attach generally rectangular bar stock, such as existing Bookwalter/Codman rings, to a post in a surgical retractor system. The clamp interacts with corners of the ring at any of a wide range of widths and thicknesses, while still retaining a simple and intuitive tightening action such as through a rotational collar which absorbs some of the clamping force as a hoop stress. In the preferred arrangement, the clamp makes a tripod top/planar bottom contact with the generally rectangular bar stock of the ring. An articulating joint permits best fold up of the clamp, with a ball shaft which is constrained within the bisecting plane of the joint clamp. A spherical nut is used on the clamp bolt in one of the clamps, which permits some change in orientation of the clamp bolt when the clamp bolt is tightened using a cammed handle.

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First Claim