Back to results
US 2026/0026850 A1Published application
Ratchet retracting handles and methods of using the same
AssigneeNuVasive, Inc.
InventorsNaomi Kibrya, John Love, Matthew Tobias Jacobs, Ryan Woods, Megan Jeffords
Life of this patent
Estimating the term…
Abstract
Disclosed herein are ratchet retracting handles and related methods for automatically retracting a stylet during insertion of a bone anchor.
Claims12
A method for inserting a bone anchor and automatically retracting a stylet, the method comprising:
- providing a retracting handle adapted to be attached to a screw driver for inserting the bone anchor, the retracting handle including:
- a cap assembly coupled to the stylet and configured to transition the retracting handle between a docking mode where the stylet is retained at a fixed protrusion relative to the bone anchor attached to the screw driver and an extended mode where the stylet is configured to translate relative to the attached bone anchor:
- a retractor assembly coupled to the cap assembly, wherein engagement of the retractor assembly with the cap assembly allows the retractor assembly to translate distally;
- and
- a cover at least partially enclosing the cap assembly and the retractor assembly;
- attaching the retracting handle to the screw driver such that the stylet is positioned at least partially in the screw driver;
- rotating the cover in a first direction to advance the stylet and the bone anchor in the distal direction;
- and
- rotating the cover in a second direction, opposite the first direction, to restrain the bone anchor from rotating and simultaneously retract the retractor assembly and the stylet automatically and proximally relative to the bone anchor.
6 more elements
A method for inserting a bone anchor and automatically retracting a stylet, the method comprising:
- providing a bone anchor insertion device including:
- a screw driver having a hollow shaft to which the bone anchor is configured to be attached, the bone anchor being a hollow bone screw;
- a retracting handle having a stylet disposed therein, the retracting handle configured to switch between a docking mode where the stylet is retained at a fixed protrusion relative to the bone anchor attached to the screw driver and an extended mode where the stylet is configured to translate relative to the attached bone anchor;
- attaching the retracting handle to the screw driver such that the stylet is inserted through the screw driver shaft and the attached bone anchor and the stylet is retained at a fixed protrusion relative to the bone anchor;
- malleting the retracting handle to cause the stylet to translate distally while the stylet remains translationally fixed to the bone anchor so as to dock the screw and the stylet on a bone without the bone anchor skiving off the bone;
- rotating the retracting handle in a first direction to advance the stylet and the bone anchor in the distal direction;
- and
- switching the retracting handle to the extended mode;
- rotating the retracting handle in a second direction, opposite the first direction, to restrain the bone anchor from rotating and simultaneously retract the stylet automatically and proximally relative to the bone anchor.
6 more elements
Dependencies are inferred from the claim text.