Crank retractor handle

Abstract

The present invention relates to an apparatus for adapting a non-cylindrical serrated surgical retractor blade handle to the cylindrical bore of a universal joint. The apparatus includes an adaptor housing having a retractor handle passageway, at least a portion of the retractor handle passageway being configured to receive the slideable insertion of a non-cylindrical retractor blade handle. The adaptor housing is configured for rotational insertion into the cylindrical bore of a clamping member, thereby allowing the adaptor housing, the non-cylindrical retractor blade handle, and an attached retractor blade, to rotate about the longitudinal axis of the non-cylindrical retractor blade handle. In the illustrated embodiment, a pawl mechanism is connected to the adaptor housing and configured for automatic engagement with at least one of a plurality of serrations that are located on the non-cylindrical retractor blade handle, thereby allowing for the efficient adjustment and automatic locking of the linear position of the non-cylindrical retractor blade handle relative to the operative site.

What is claimed is: 
     
         1 . A universal clamping joint comprising:
 a first clamping member having a cylindrical clamping bore;   an adapter housing having a non-cylindrical, solid-walled retractor handle passageway and a sleeve, the sleeve including an outer surface, at least a portion of the outer surface of the sleeve being configured for insertion into the cylindrical clamping bore, the outer surface and the cylindrical clamping bore also configured to allow for the rotation of the adapter housing about a longitudinal axis of the cylindrical clamping bore; and   a locking mechanism operably connected to the first clamping member, the locking mechanism being movable between an unclamped position and a clamped position, the clamped position being capable of imposing a clamping force on the cylindrical clamping bore to prevent the rotation of adaptor housing about the longitudinal axis of the cylindrical clamping bore.   
     
     
         2 . The apparatus of  claim 1 , wherein the apparatus further includes a non-cylindrical retractor blade handle for insertion into the non-cylindrical solid walled retractor handle passageway, the non-cylindrical retractor blade handle having a plurality of serrations. 
     
     
         3 . The apparatus of  claim 2 , wherein the apparatus further includes a pinion, the pinion is operably connected to the adaptor housing, the pinion having a plurality of pinion teeth. 
     
     
         4 . The apparatus of  claim 3 , wherein the pinion teeth are configured for engagement with at least one of the plurality of serrations configured in the non-cylindrical retractor blade handle. 
     
     
         5 . The apparatus of  claim 4 , wherein a crank knob is operably connected to the pinion, the rotation of the crank knob facilitating the rotation of the pinion. 
     
     
         6 . The apparatus of  claim 2 , wherein the apparatus further includes a pawl, the pawl mechanism is pivotably mounted onto the adapter housing, the pawl mechanism being configured for both a releasable engagement and a locking engagement with at least one of the plurality serrations configured in the non-cylindrical retractor blade handle. 
     
     
         7 . The apparatus of  claim 6 , wherein a spring pin is operably connected to the pawl mechanism, the spring pin being configured to bias the pawl mechanism against at least one of the plurality of serrations in the non-cylindrical retractor blade handle. 
     
     
         8 . The apparatus of  claim 1 , wherein at least a portion of the retractor handle passageway is a cylindrical orifice. 
     
     
         9 . The apparatus of  claim 1 , wherein the locking mechanism is a cam locking mechanism, the cam locking mechanism having a cam handle and a cam. 
     
     
         10 . The apparatus of  claim 9 , wherein the locking mechanism engages a through-rod and a nut. 
     
     
         11 . The apparatus of  claim 9 , wherein the cam handle has an unclamped position and a clamped position, the clamped position and the unclamped position of the cam handle being configured to be substantially parallel to the retractor handle passageway. 
     
     
         12 . The apparatus of  claim 1 , wherein a second clamping member is rotatably connected to the first clamping member, the second clamping member and the first clamping member being capable of rotational movement about the same axis.