US2004122435A1PendingUtilityA1

Bone alignment lever

43
Individually held — no corporate assignee on recordPriority: May 29, 2001Filed: Nov 18, 2003Published: Jun 24, 2004
Est. expiryMay 29, 2021(expired)· nominal 20-yr term from priority
Inventors:James M. GreenStanley J. Kmiec, Jr.
A61B 17/8866A61B 17/28A61B 17/282A61B 17/8872A61B 2017/00367A61B 2017/2944
43
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A lever for grasping bone tissue includes a shaft defining a channel and having a proximal end and a distal end, a claw member disposed on the distal end of the shaft for holding the bone tissue, and a rod threadably received in the channel and having a proximal end and a distal end. Rotation of the rod with respect to the shaft causes the rod to move substantially axially with respect to the shaft to selectively position the distal end of the rod with respect to the claw member. The lever may further include a locking member to allow the rod to slide axially with respect to the shaft. Various other features which improve the functioning of the lever may be provided separately or in combination.

Claims

exact text as granted — not AI-modified
What is claimed:  
     
         1 . A lever for grasping bone tissue, comprising: 
 a shaft having a proximal end and a distal end, and defining a first channel;    a claw member disposed on the distal end of the shaft for holding the bone tissue;    a locking member defining a second channel substantially aligned with the first channel, the locking member movable between a first position and a second position;    a rod at least partially received in the first and second channels for engaging the bone tissue; and    a retaining member for retaining the locking member in the second position;    wherein the rod is axially slidable in the first channel when the locking member is in the first position, and the rod is substantially prevented from axial sliding in the first channel when the locking member is in the second position.    
     
     
         2 . The lever of  claim 1 , wherein the retaining member substantially prevents movement of the locking member to the first position.  
     
     
         3 . The lever of  claim 1 , wherein the retaining member is movable between a retaining position wherein the retaining member retains the locking member in the second position, and a non-retaining position wherein the locking member is movable from the second position to the first position.  
     
     
         4 . The lever of  claim 3 , wherein the retaining member is slidable between the retaining position and the non-retaining position.  
     
     
         5 . The lever of  claim 3 , wherein when the retaining member is in the retaining position, a portion of the retaining member engages a portion of the locking member.  
     
     
         6 . The lever of  claim 3 , wherein the locking member defines a third channel, and when the retaining member is in the retaining position, a portion of the retaining member is received in the third channel.  
     
     
         7 . The lever of  claim 6 , wherein the retaining member includes a substantially cylindrical engagement portion for being received in the third channel.  
     
     
         8 . The lever of  claim 3 , further including at least one detent for releasably holding the retaining member in the retaining position.  
     
     
         9 . The lever of  claim 3 , further including at least one detent for releasably holding the retaining member in the non-retaining position.  
     
     
         10 . A lever for grasping bone tissue comprising: 
 a shaft having a proximal end and a distal end, and defining a first channel;    a claw member disposed on the distal end of the shaft for holding the bone tissue;    a rod received in the first channel for engaging the bone tissue;    a locking member operatively associated with the shaft and moveable between a first position wherein the rod is axially slidable in the first channel, and a second position wherein the locking member threadably engages the shaft to substantially prevent axial sliding of the shaft in the first channel; and    a retaining member for retaining the locking member in the second position.    
     
     
         11 . The lever of  claim 10 , wherein the retaining member substantially prevents movement of the locking member to the first position.  
     
     
         12 . The lever of  claim 10 , wherein the retaining member is movable between a retaining position wherein the retaining member retains the locking member in the second position, and a non-retaining position wherein the locking member is movable from the second position to the first position.  
     
     
         13 . The lever of  claim 12 , wherein the retaining member is slidable between the retaining position and the non-retaining position.  
     
     
         14 . The lever of  claim 12 , wherein when the retaining member is in the retaining position, a portion of the retaining member engages a portion of the locking member.  
     
     
         15 . The lever of  claim 12 , wherein the locking member defines a third channel, and when the retaining member is in the retaining position, a portion of the retaining member is received in the third channel.  
     
     
         16 . The lever of  claim 15 , wherein the retaining member includes a substantially cylindrical engagement portion for being received in the third channel.  
     
     
         17 . The lever of  claim 12 , further including at least one detent for releasably holding the retaining member in the retaining position.  
     
     
         18 . The lever of  claim 12 , further including at least one detent for releasably holding the retaining member in the non-retaining position.  
     
     
         19 . A lever for grasping bone tissue, comprising: 
 a shaft having a claw member for holding the bone tissue, the shaft defining a first channel;    a rod at least partially received in the first channel for biasing the bone tissue into the claw member;    a locking member movably associated with the shaft between a first position wherein the rod is axially slidable in the first channel, and a second position wherein the rod is substantially prevented from axial sliding in the first channel; and    a retaining member for retaining the locking member in the second position.    
     
     
         20 . The lever of  claim 19 , wherein when the locking member is in the second position, rotation of the rod with respect to the shaft causes the rod to move substantially axially with respect to the shaft.  
     
     
         21 . The lever of  claim 19 , wherein: 
 the locking member includes a first threaded portion;    the rod includes a second threaded portion; and    the first threaded portion engages the second threaded portion when the locking member is in the second position.    
     
     
         22 . The lever of  claim 21 , wherein the locking member is resiliently biased toward the second position.  
     
     
         23 . The locking member of  claim 21 , wherein: 
 the locking member defines a second channel;    a portion of the rod extends through the second channel; and    the first threaded portion is formed on the second channel.    
     
     
         24 . The lever of  claim 19 , wherein the retaining member is movable between a retaining position wherein the retaining member retains the locking member in the second position, and a non-retaining position wherein the locking member is movable from the second position to the first position.  
     
     
         25 . The lever of  claim 24 , wherein the retaining member is slidable between the retaining position and the non-retaining position.  
     
     
         26 . The lever of  claim 24 , wherein when the retaining member is in the retaining position, a portion of the retaining member engages a portion of the locking member.  
     
     
         27 . The lever of  claim 26 , wherein the locking member defines a third channel, and when the retaining member is in the retaining position, a portion of the retaining member is received in the third channel.

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