System and method for bone anchor removal
AssigneesHyun Bae, Medicinelodge, Inc. Dba Imds Co-Innovation, Edwin Su
InventorsHyun Bae, Edwin Su, Neil Etherington, Carlyle Creger, Nathan Erickson, Andrew Fauth
Life of this patent
Estimating the term…
Abstract
Systems and methods for bone anchor removal include a removal guide and a removal instrument. The removal guide includes grooves for guiding the removal instrument to the anchors, and for guiding removal of the anchor. The removal instrument includes a distal working end with a grasping feature designed to engage a portion of the bone anchor and an engagement feature designed to engage the grooves of the removal guide for anchor removal.
Claims29
A system for removal of an anchor from an implant, the implant having a channel, the anchor at least partially contained within the channel, the system comprising:
- a removal guide, wherein the removal guide comprises a first surface having a groove, wherein the removal guide is positionable such that the groove is coaxially aligned with the channel, wherein when the groove is coaxially aligned with the channel, the groove and the channel define a removal axis;
- and
- an instrument, the instrument comprising a body, wherein the body comprises a central axis and a working end, wherein the working end comprises a grasping feature and an engagement feature, the grasping feature adapted to engage a support of the anchor, and the engagement feature adapted to engage the groove.
A system for removal of an anchor from an implant, the implant having a channel, the anchor at least partially contained within the channel, the system comprising:
- a removal guide, wherein the removal guide comprises a first surface, wherein the first surface comprises a groove, wherein the removal guide is positionable such that the groove is coaxially aligned with the channel, wherein when the groove is coaxially aligned with the channel, the groove and the channel define a removal axis;
- and
- an instrument, the instrument comprising a handle and a working end, the working end comprising a grasping feature and a rocker that is adapted to engage the channel, wherein the grasping feature is adapted to engage a support structure of the anchor, wherein when the rocker engages the channel, the working end is pivotable between a first alignment and a second alignment.
An instrument for removal of an anchor from an implant, the implant having a channel, wherein the anchor is at least partially contained within the channel, wherein the anchor comprises a support structure, wherein the support structure comprises a first end and a second end, wherein the channel defines a removal axis, the instrument comprising:
- a handle;
- and
- a working end, the working end comprising a grasping feature, wherein the grasping feature is transitionable between a neutral position and a deflected position.
A method for removing a bone anchor from an implant, the implant comprising a channel defining a removal axis, the method comprising:
- positioning a removal guide adjacent to the implant, wherein the removal guide comprises a first surface, wherein the first surface comprises a groove, wherein when the removal guide is positioned adjacent to the implant, the groove is coaxially aligned with the channel defining a removal axis;
- and
- engaging a removal instrument with the anchor, wherein the removal instrument comprises a working end and a handle, wherein the working end comprises a grasping feature and an engagement feature, wherein when the removal instrument is engaged with the anchor, the grasping feature is lockably connected to a portion of the anchor.
Dependencies are inferred from the claim text.