US2009210012A1PendingUtilityA1

Laminoplasty devices and methods

53
Individually held — no corporate assignee on recordPriority: May 30, 2002Filed: Apr 24, 2009Published: Aug 20, 2009
Est. expiryMay 30, 2022(expired)· nominal 20-yr term from priority
Inventors:William B. NullRobert W. WeakleyGregory C. MarikJohn G. HellerJeffrey C. Wang
A61B 17/7059A61B 17/7071A61B 17/70A61B 2017/564
53
PatentIndex Score
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Cited by
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References
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Claims

Abstract

Laminoplasty plates are engageable to at least one portion of a divided lamina to maintain a desired spacing relative to the spinal canal. The laminoplasty plates include a spacer portion having a first end and a second end that spans a gap formed by at least one of a divided lamina portion. The laminoplasty plates can include a lamina engagement portion at one end for engagement with the divided lamina portion.

Claims

exact text as granted — not AI-modified
1 - 35 . (canceled) 
   
   
       36 . A laminoplasty plate, comprising:
 a spacer portion extending along a longitudinal axis between a first and a second end;   a first lamina engagement portion adjacent said first end, said first lamina engagement portion including at least one stabilizing flange including at least one securement hole extending therethrough aligned with the longitudinal axis of said spacer portion; and   a second lamina engagement portion adjacent said second end, said second lamina engagement portion including at least one stabilizing flange including at least one securement hole extending therethrough, wherein said spacer portion includes an elongated slot extending therethrough along said longitudinal axis.   
   
   
       37 . The plate of  claim 36 , wherein said at least one stabilizing flange of said first lamina engagement portion includes a pair of securement holes aligned with the longitudinal axis of said spacer portion. 
   
   
       38 . The plate of  claim 37 , wherein said at least one stabilizing flange of said second lamina engagement portion includes a pair of securement holes offset on opposite sides of the longitudinal axis of said spacer portion. 
   
   
       39 . The plate of  claim 36 , wherein said at least one stabilizing flange of said second lamina engagement portion includes a pair of securement holes offset on opposite sides of the longitudinal axis of said spacer portion. 
   
   
       40 - 41 . (canceled) 
   
   
       42 . The plate of  claim 36 , wherein said spacer portion includes a width transverse to the longitudinal axis, said width being enlarged about said elongated slot. 
   
   
       43 . The plate of  claim 36 , wherein said elongated slot includes a recessed surface extending therearound permitting variable angle placement of a securement device therethrough. 
   
   
       44 . The plate of  claim 36 , wherein:
 said at least one stabilizing flange of said first lamina engagement portion includes a pair of securement holes extending therethrough to receive securement devices, said pair of securement holes each being aligned along the longitudinal axis of said spacer portion; and   said at least one stabilizing flange of said second lamina engagement portion includes a pair of securement holes extending therethrough to receive securement devices.   
   
   
       45 . The plate of  claim 44 , wherein said pair of securement holes of said at least one lamina stabilizing flange of said second lamina engagement portion are offset on opposite sides of said longitudinal axis and aligned along an axis extending orthogonally to the longitudinal axis of said spacer portion. 
   
   
       46 . The plate of  claim 44 , wherein:
 said at least one stabilizing flange of said first lamina engagement portion includes a pair of nodes, each of which includes a corresponding one of said pair of securement holes thereof; and   said at least one stabilizing flange of said second lamina engagement portion includes a pair of nodes, each of which includes a corresponding one of said pair of securement holes thereof.   
   
   
       47 . The plate of  claim 46 , wherein:
 said at least one stabilizing flange of said first lamina engagement portion includes a reduced width portion between said pair of nodes thereof and said spacer portion; and   said at least one stabilizing flange of said second lamina engagement portion includes a reduced width portion between said pair of nodes thereof and said spacer portion.   
   
   
       48 . The plate of  claim 46 , wherein each of said securement holes includes a recessed surface therearound permitting variable angle placement of securement devices therein. 
   
   
       49 . The plate of  claim 36  wherein:
 said at least one stabilizing flange of said first lamina engagement portion forms a first angle with said spacer portion; and   said at least one stabilizing flange of said second lamina engagement portion forms a second angle with said spacer portion.   
   
   
       50 . The plate of  claim 49 , wherein said first and second angles each range from about 35 degrees to about 55 degrees. 
   
   
       51 . The plate of  claim 49 , wherein said first and second angles are each about 45 degrees. 
   
   
       52 . The plate of  claim 49 , wherein said at least one stabilizing flanges of each of said first and second lamina engagement portions extend generally parallel to one another from said spacer portion. 
   
   
       53 - 87 . (canceled)

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