US2013253591A1PendingUtilityA1

Percutaneous posterolateral spine fusion

44
Individually held — no corporate assignee on recordPriority: Jan 5, 2006Filed: May 23, 2013Published: Sep 26, 2013
Est. expiryJan 5, 2026(expired)· nominal 20-yr term from priority
Inventors:Ezriel Kornel
A61B 17/1659A61B 17/3417A61B 17/90A61B 17/1671A61B 17/7074A61B 17/1697A61B 17/1757
44
PatentIndex Score
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Claims

Abstract

A method, tools, and system for performing a percutaneous or minimally invasive spine fusion procedure are provided. A trocar and then dilator are used to create a channel for a hollow and longitudinally slit delivery tube. The method includes inserting a decorticator, such as a rasp, via a delivery tube, decorticating a first region of a first bone associated with a spine, and pushing a bone fusion substance via the delivery tube to the region to fuse the first region with a second region of a second bone associated with the spine. The spine fusion may be a posterolateral fusion and the first region may be a transverse process region of a lumber spine. The bone fusion substance may be pushed using a pusher instrument inserted into the delivery tube, and the delivery tube may be removed while the pusher instrument is held in place to direct the bone fusion substance.

Claims

exact text as granted — not AI-modified
1 . A method of performing a spine fusion procedure, the method comprising the steps of:
 inserting a decorticator via a delivery tube proximal to the spinal bone of interest, the delivery tube having a longitudinal slit;   decorticating a first region of a spinal first bone by sliding the decorticator along said longitudinal slit in the delivery tube; and   pushing a bone fusion substance via the delivery tube to the region to fuse the first region with a second region of a second bone associated with the spine, the bone fusion substance also sliding along the longitudinal slit of the delivery tube.   
     
     
         2 . The method of  claim 1 , wherein the spine fusion comprises posterolateral fusion and the first region is a transverse process region. 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . The method of  claim 1 , wherein the decorticator comprises a rasp. 
     
     
         6 . The method of  claim 1 , further comprising inserting a dilator before inserting the delivery tube. 
     
     
         7 . The method of  claim 6 , further comprising inserting a trocar before inserting said dilator. 
     
     
         8 . The method of  claim 7 , further comprising inserting a guide wire before inserting the trocar. 
     
     
         9 . A method of performing a spine fusion procedure, the method comprising:
 inserting a trocar into a body through an incision;   inserting a dilator over the trocar;   inserting a delivery tube having a longitudinal slit over the dilator and removing said trocar and dilator;   decorticating a transverse process region by inserting a decorticator into said delivery tube and sliding said decorticator along said slit;   inserting a pusher instrument into the delivery tube; and   pushing a bone fusion substance via the delivery tube and also along said slit to the transverse process region.   
     
     
         10 . The method of  claim 9 , further comprising removing the delivery tube while holding the pusher instrument in place to direct the bone fusion substance. 
     
     
         11 . The method of  claim 9 , further comprising inserting a guide wire before inserting the 20 trocar. 
     
     
         12 . The method of  claim 9 , further comprising determining a curvature of at least a portion of a human spine and adjusting the curvature of said decorticator and/or said pusher instrument, accordingly. 
     
     
         13 . The method of  claim 9 , wherein said trocar comprises a cannula. 
     
     
         14 . The method of  claim 9 , wherein the decorticator comprises a rasp. 
     
     
         15 . A system for performing a spine fusion procedure, the system comprising:
 a trocar adapted to be inserted into a body through an incision;   a dilator adapted to be inserted over said trocar;   a longitudinally slit delivery tube adapted to be inserted over said dilator;   a decorticator adapted to be inserted into the delivery tube with its working end projecting through said slit to decorticate a transverse process region; and   a pusher instrument adapted to be inserted into said delivery tube to push a bone fusion substance to the region.   
     
     
         16 . The system of  claim 15 , wherein at least one of said trocar, said dilator, said delivery tube, said decorticator or said pusher is adapted to be malleable to a curvature of at least a portion of a human spine according to the spine curvature of a patient for the transverse process region. 
     
     
         17 . The system of  claim 15 , wherein a curvature of at least one of said trocar, said dilator,
 said delivery tube, said decorticator or the pusher is pre-determined to a curvature of at least a portion of a human spine.   
     
     
         18 . The system of  claim 15 , wherein said trocar comprises a cannula. 
     
     
         19 . The system of  claim 15 , wherein said decorticator comprises a rasp.

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