Sacroiliac joint implant and sacroiliac joint instrument for fusing a sacroiliac joint

摘要

A system for fixating a dysfunctional sacroiliac joint for SI joint fusion, the system including a sacroiliac joint implant, a sacroiliac joint screw or rod and a delivery tool configured for approaching a sacroiliac joint. The system may include an implant having a porous 3D matrix structure and may be manufactured by laser or electron beam additive manufacturing. The delivery tool may include a radiolucent material. The SI fusion system may further include custom sacroiliac joint implants, anchors, alignment tools or targeting arms manufactured for a particular patient. Pre-surgical imaging studies, including 3D rendering, and their interpretation may assist in planning desired trajectories, anchor dimensions and implant dimensions and may provide details specific to the manufacture of particular sacroiliac joint tools or implants and their implantation into the sacroiliac joint. The system may be configured for use with surgical robots and may include an integrated nerve monitoring and stimulation system.

主权项

1. A sacroiliac joint fusion system for fusing a sacroiliac joint having a sacrum, an ilium, and a joint plane defined between the sacrum and the ilium, the system comprising:
a) a joint implant comprising a body having a hollow interior and an exterior surface having a plurality of openings defined therein that extend into the hollow interior, a first lateral side comprising a first surface, a second lateral side opposite the first lateral side comprising a second surface, a side extending between the first and second lateral sides, and a first bore extending through the joint implant, the first and second surfaces being generally parallel to each other, the hollow interior being adapted to have a biological material located therein prior to the implantation of the joint implant, the side extending a perimeter of the joint implant and including a closed inferior side so as to limit an amount of seepage of the biological material from the hollow interior of the joint implant; b) an anchor element configured to be received in the first bore; and c) a delivery tool comprising:
i) an implant arm configured to releasably couple to the joint implant and configured to deliver the joint implant into the sacroiliac joint such that the first and second surfaces are generally parallel with the joint plane of the sacroiliac joint; andii) an anchor arm coupled to the implant arm and configured to deliver the anchor element to the first bore, wherein a final manufactured configuration of the tool and a final manufactured configuration of the joint implant are such that, when the system is assembled such that the implant arm is releasably coupled to the joint implant, a delivery arrangement automatically exists such that the anchor arm is correctly oriented to deliver the anchor element to the first bore.