Implants for bone fixation or fusion

• US 10,166,033 B2
• Filed: 09/18/2015
• Issued: 01/01/2019
• Est. Priority Date: 09/18/2014
• Status: Active Grant

• Current Assignee: SI-Bone, Incorporated
• Original Assignee: SI-Bone, Incorporated
• Inventors: Reiley, Mark A., Schneider, Bret W., Leung, Joanne, Sand, Paul, Yerby, Scott A.
• Primary Examiner(s): Beccia, Christopher
• Application Number:
  US14/859,046
• Publication Number:
  US 20160081810A1
• Time in Patent Office: 1,201 Days
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/84 Fasteners therefor or fasteners being internal fixation devices
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30171 rosette- or star-shaped
• CPC Class Codes: A61F 2002/30879 Ribs
• CPC Class Codes: A61F 2002/30884 Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/30995 for sacro-iliac joints

Abstract

Implants for the fusion or fixation of two bone segments are described. For example, the implants can be used for the fusion or fixation of the sacroiliac joint. The implants can include fenestrations, have a rectilinear overall cross-sectional area, and have a curvature. Some implants can also be used to rescue failed implants.

Claims

1. A method of implanting a curved implant across a joint or fracture between a first bone segment and a second bone segment, the method comprising:

forming a curved insertion path from the first bone segment, across the joint or fracture between the first bone segment and the second bone segment, and to the second bone segment, wherein the curved insertion path has a predetermined radius of curvature along its length;

inserting a curved guidewire along the curved insertion path;

disposing a drill bit over the curved guidewire;

drilling a curved bore along the curved guidewire;

disposing a broach over the curved guidewire;

shaping the curved bore with the broach to form the insertion path; and

inserting a curved implant having a matching radius of curvature into the curved insertion path and into the first bone segment, across the joint or fracture, and into the second bone segment.

2. The method of claim 1, wherein the curved guidewire is rotated into the curved insertion path.

3. The method of claim 1, wherein both the shaped insertion path and the curved implant have a transverse overall cross-sectional profile that is rectilinear.

4. The method of claim 1, wherein both the shaped insertion path and the curved implant have a transverse overall cross-sectional profile that is defined by at least one apex.

5. The method of claim 1, wherein both the shaped insertion path and the curved implant have a transverse overall cross-sectional profile that is triangular.

6. The method of claim 1, wherein both the shaped insertion path and the curved implant have a transverse overall cross-sectional profile that is rectangular.

7. The method of claim 1, wherein the curved implant comprises an elongate body with a plurality of fenestrations.

8. The method of claim 7, wherein the fenestrations are located on a distal portion of the elongate body.