Method and Apparatus for Sacroiliac Joint Fusion
AssigneeTenon Medical, Inc.
InventorsWyatt Geist, John Souza
Life of this patent
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Abstract
A surgical fixation assembly and related method of fusing a sacroiliac joint are described herein. The surgical fixation assembly includes a compression member, a stabilizer, and a locking element. The compression member is rotatably implantable into two bone segments separated by a joint. The stabilizer is configured for coupling with the compression member in situ after implantation of the compression member and prevents rotation of the compression member after implantation. The locking element is provided on the stabilizer and is moveable from a first position that allows coupling of the stabilizer and compression member to a second position that prevents uncoupling of the stabilizer from the compression member.
Claims20
A surgical fixation assembly, comprising:
- a compression member comprising a cylindrical body having a proximal end, a distal end, a middle portion extending longitudinally between the proximal and distal ends, a first bone engaging feature positioned at the proximal end, a second bone engaging feature positioned at the distal end, and a stabilizer engagement feature positioned on an exterior surface of the compression member;
- an independent stabilizer configured to couple to the compression member by interacting with the stabilizer engagement feature, the stabilizer comprising an elongated body having a third bone engagement feature and a coupling feature;
- and
- a locking element rotatably coupled to the stabilizer, the locking element configured for movement between a first position enabling movement of the stabilizer relative to the compression member before or during coupling of the stabilizer and compression member, and a second position preventing movement of the stabilizer relative to the compression member after coupling of the stabilizer and compression member.
A method of fusing a first bone segment and a second bone segment across a joint between the first and second bone segments, comprising:
- establishing an operative corridor to a surgical target site;
- securing a compression member to a driver instrument having an elongated drill bit at a distal end, the compression member comprising a cylindrical body having a proximal end, a distal end, a middle portion extending longitudinally between the proximal and distal ends, a first bone engaging feature positioned at the proximal end, a second bone engaging feature positioned at the distal end, a stabilizer engagement feature positioned on an exterior surface of the compression member, and an inner lumen extending longitudinally through the elongated body between openings at the proximal and distal ends;
- implanting the compression member into the surgical target site by rotatably advancing the compression member through the first bone segment, across the joint and into the second bone segment until the second bone engaging feature is seated within the second bone segment, the first bone engaging feature is seated within the first bone segment, and the middle portion extends across the joint;
- advancing an independent stabilizer through the operative corridor toward the implanted compression member;
- coupling the independent stabilizer in situ to the implanted compression member such that the implanted compression member is prevented from rotating relative to the first and second bone segments;
- and
- upon in situ coupling of the stabilizer and the compression member, rotating a locking element coupled with the stabilizer from a first position enabling movement of the stabilizer relative to the compression member, to a second position preventing movement of the stabilizer relative to the compression member.
Dependencies are inferred from the claim text.