Lateral distractor

Patent metadata

Field	Value
Publication number	US-9827114-B2
Application number	US-201614994476-A
Country	US
Kind code	B2
Filing date	Jan 13, 2016
Priority date	Oct 20, 2012
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A distraction device includes a cage distractor, two distractor blades, an inserter positioner, and a clip inserter. The cage distractor is selectively securable to the two distractor blades and includes two distractor housings moveable relative to one another. The inserter positioner is selectively securable to the two distractor blades and include a center member that is centered between the distractor blades when the inserter positioner is secured to the two distractor blades. The clip inserter is configured to secure a clip to a distal end thereof and is slidable through the center member to secure the clip to a cage distracted by the movement of the two distractor housings away from one another. The clip maintaining the distraction of the cage.

First claim

What is claimed:

1. A method of distracting a cage, the method comprising:
securing a proximal end portion of a first distractor blade in a first distractor housing of a cage distractor and securing a proximal end portion of a second distractor blade in a second distractor housing of the cage distractor;
sliding a distal end portion of the first distractor blade and a distal end portion of the second distractor blade onto a cage;
rotating a center shaft of the cage distractor to move the first distractor housing away from the second distractor housing such that the distal end portion of the first distractor blade moves away from the distal end portion of the second distractor blade to distract the cage, wherein the center shaft is disposed along an axis parallel to the movement of the first distractor housing away from the second distractor housing; and
securing at least one of the first and second distractor blades to the cage with a blade shaft inserted through a passage of the at least one of the first and second distractor blades and threading a threaded end of the blade shaft into a threaded hole in the cage.

2. A method of distracting a cage, the method comprising:
securing a proximal end portion of a first distractor blade in a first distractor housing of a cage distractor and securing a proximal end portion of a second distractor blade in a second distractor housing of the cage distractor;
sliding a distal end portion of the first distractor blade and a distal end portion of the second distractor blade onto a cage;
rotating a center shaft of the cage distractor to move the first distractor housing away from the second distractor housing such that the distal end portion of the first distractor blade moves away from the distal end portion of the second distractor blade to distract the cage, wherein the center shaft is disposed along an axis parallel to the movement of the first distractor housing away from the second distractor housing;
securing a clip positioner to the proximal end portion of the first distractor blade and the proximal end portion of the second distractor blade, the clip positioner including a center member centered between the first and second distractor blades;
securing a clip to a distal end portion of a clip inserter; and
sliding the clip inserter through a bore of the center member to center the clip between the distal end portions of the first and second distractor blades.

3. The method according to claim 2 , wherein securing the clip to the distal end portion of the clip inserter includes threading a threaded end of an inserter shaft passed through a cannula of a cannulated body of the clip inserter into a threaded hole in the clip.

4. The method according to claim 2 , wherein the bore of the center member is a threaded bore and the clip inserter includes a handle having a threaded handle end, the handle rotatable about a cannulated body portion of the clip inserter, and wherein securing the clip onto the cage includes threading the threaded handle end into the threaded bore.

Assignees

• K2M Inc

Inventors

• Theofilos Charles
• Wallenstein Todd
• Wassinger Adam
• Jones Scott

Classifications

• A61F2/4603

  for insertion or extraction of endoprosthetic joints or of accessories thereof · CPC title

• A61F2002/30593

  hollow · CPC title

• A61F2002/30841

  Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes · CPC title

• A61F2002/4627

  with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument · CPC title

• A61F2/4465

  having a circular or kidney shaped cross-section substantially perpendicular to the axis of the spine · CPC title