Instruments and methods for removing fixation devices from intervertebral implants
AssigneeLDR Medical
InventorsHervé Dinville, Samuel Lequette, Emmanuel Bougère
Life of this patent
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Abstract
Anchor removal instruments and methods for using the instruments are provided. In some embodiments, an intervertebral implant anchor extractor tool comprises a support, a support retainer configured to hold the support fixed with respect to the implant, an extractor having an anchor retainer, and an extractor guide. An embodiment of a method of using this implant anchor extractor tool comprises the steps of obtaining access to an anchor, grasping the anchor, and applying a withdrawal force on the anchor while applying a countervailing force against the implant or a vertebral structure.
Claims23
A vertebral implant system comprising
- an implant anchor;
- an implant having a pathway configured to receive the anchor from the side of the implant and guide the anchor into a vertebral endplate;
- and
- a tool for removing the anchor from the intervertebral implant comprising:
- an elongated support comprising a vertebral body bumper at a first end of the support and a stabilization handle disposed proximal to a second end of the support;
- a coupler configured to fix the support to the implant;
- an elongated extractor comprising an anchor attachment at one end of the extractor and an extraction actuator;
- an extractor guide disposed along the support proximal to the first end of the support;
- and
- an extractor support disposed along the support proximal to the second end of the support.
A vertebral implant system comprising
- an implant anchor;
- an intervertebral implant having a pathway configured to receive the anchor from the side of the implant and guide the anchor into a vertebral endplate;
- and
- an instrument for removing the anchor from the intervertebral implant comprising:
- a support comprising a vertebral body bumper and a stabilization handle;
- a coupler configured to fix the support to the implant;
- an extractor comprising an anchor attachment and an extraction actuator;
- and
- an extractor guide disposed along the support.
A vertebral implant system comprising
- an implant anchor;
- an intervertebral implant having a pathway configured to receive the anchor from the side of the implant and guide the anchor into a vertebral endplate;
- and
- an instrument for removing the anchor inserted into the intervertebral implant to retain the implant against a vertebral body, the instrument comprising:
- an anchor extractor shaft having a first end configured with an anchor attachment and a second end longitudinally distal from the first end;
- an anchor extractor shaft guide comprising
- a channel configured to receive the anchor extractor shaft and permit rotational movement of anchor extractor shaft, and
- an implant contact surface configured to abut the intervertebral implant when the anchor extractor shaft guide is placed for removal of the anchor;
- and
- an operation handle connectable to the second end of the anchor extractor shaft and operable to extract the anchor.
A vertebral implant system comprising:
- an implant anchor;
- an implant having a pathway configured to receive the anchor from the side of the implant and guide the anchor into a vertebral endplate;
- and
- an implant anchor extractor tool comprising
- a support,
- a support retainer configured to hold the support fixed with respect to the implant,
- an extractor having an anchor retainer, and
- an extractor guide.
Dependencies are inferred from the claim text.