US 11,723,643 B2
Distraction and retraction assembly incorporating locking feature
Kevin Seex, Kingswood (AU)
Assigned to RETROSPINE PTY LTD, Nsw (AU)
Filed by Retrospine Pty Ltd, Kingswood (AU)
Filed on Sep. 11, 2020, as Appl. No. 17/18,391.
Claims priority of application No. 2019903392 (AU), filed on Sep. 12, 2019.
Prior Publication US 2021/0128131 A1, May 6, 2021
Int. Cl. A61B 17/70 (2006.01); A61B 17/02 (2006.01)
CPC A61B 17/025 (2013.01) [A61B 17/0206 (2013.01); A61B 17/7076 (2013.01); A61B 2017/0256 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A device for use in a surgical distraction and retraction assembly, the assembly including the device and at least one bone anchoring pin for securing the device against a bearing surface; characterized in that the device comprises: an integral frame defining an internal space, the frame having a first pair of opposing side arms and a second pair of opposing side arms; at least one of said side arms of said first pair of opposing side arms including at least one recess each having one of its ends open to the internal space defined by the frame and an opposite closed end terminating within said at least one side arm; each said recess retaining one said at least one bone anchoring pin and configured to enable relative movement between the frame and the bone anchoring pins; the relative movement allowing locking of said at least one anchor pin against the frame at a user selected location to maintain a selected extent of vertebral distraction.