| CPC A61B 17/02 (2013.01) [A61B 17/1671 (2013.01); A61B 17/3423 (2013.01); A61B 2017/0256 (2013.01)] | 18 Claims |

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14. A system for minimally invasive spine surgery, the system comprising:
a portal cannula; and
a portal grip slidably attached to the portal cannula,
wherein the portal grip comprises a lumen and a lock assembly, wherein the lock assembly comprises a collet concentrically disposed about the portal cannula and configured to releasably secure the portal grip at one or more positions along a length of the portal cannula.
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