Wrist tower

Abstract

A wrist tower attachment for an arm stabilizer device is configured for modular attachment on a support arm secured in a rail clamp mounted on a rail of an operating table. The wrist tower attachment includes a wrist tower base and a wrist tower post protruding upwardly from the wrist tower base. The support arm includes a stabilizer bar having a distal bar end, and the wrist tower attachment is secured onto the distal bar end. In some embodiments, the wrist tower attachment includes a female axial socket shaped to receive the male distal bar end. A traction bar is positioned on the wrist tower post and protrudes radially from the wrist tower post. A tension gauge is disposed on the traction bar in some embodiments.

What is claimed is: 
     
         1 . An arm positioning apparatus for mounting on a rail of an operating table and for supporting patient's arm when the patient is lying in a supine position on the table, the apparatus comprising:
 a rail clamp configured for attachment to the rail;   a rail clamp socket defined in the rail clamp;   a support arm including a base and a stabilizer bar pivotally attached to the base, the stabilizer bar including a proximal bar end adjacent the base and a distal bar end extending away from the base, the base configured for insertion into the rail clamp socket;   a wrist tower attachment configured for attachment to the distal end of the support arm, the wrist tower attachment including a wrist tower base and a wrist tower post extending upwardly from the wrist tower base;   an axial socket defined in the wrist tower base, wherein the distal end of the support arm is received in the axial socket;   a traction bar disposed on the wrist tower post extending radially from the wrist tower post, the traction bar defining a traction bar passage shaped to receive the wrist tower post; and   an axial stop disposed on the wrist tower post below the traction bar.   
     
     
         2 . The apparatus of  claim 1 , wherein the wrist tower post is a vertical post. 
     
     
         3 . The apparatus of  claim 2 , wherein the axial socket in the wrist tower base has a blind end. 
     
     
         4 . The apparatus of  claim 2 , further comprising a traction bar collar on the traction bar, the traction bar collar defining the traction bar passage. 
     
     
         5 . The apparatus of  claim 4 , wherein the wrist tower post is received in the traction bar passage on the traction bar collar. 
     
     
         6 . The apparatus of  claim 5 , wherein the traction bar is freely angularly moveable around the vertical wrist tower post. 
     
     
         7 . The apparatus of  claim 6 , wherein the wrist tower post is a threaded post. 
     
     
         8 . The apparatus of  claim 7 , wherein the axial stop comprises a threaded nut. 
     
     
         9 . The apparatus of  claim 8 , further comprising a tension gauge disposed on the traction bar. 
     
     
         10 . The apparatus of  claim 1 , further comprising a modular reducer attachment configured for attachment to the stabilizer bar. 
     
     
         11 . The apparatus of  claim 10 , further comprising a modular wrist support attachment configured for attachment to the stabilizer bar. 
     
     
         12 . The apparatus of  claim 11 , further comprising a modular humeral support configured for attachment to the rail clamp.