Sacroiliac joint fixation system

• US 8,808,377 B2
• Filed: 07/01/2011
• Issued: 08/19/2014
• Est. Priority Date: 01/13/2010
• Status: Active Grant

• Current Assignee: JCBD, LLC
• Original Assignee: JCBD, LLC
• Inventors: Donner, Edward Jeffrey
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): SCHILLINGER, ANN M
• Application Number:
  US13/135,381
• Publication Number:
  US 20110264229A1
• Time in Patent Office: 1,145 Days
• Field of Search: 623 2211- 222
• US Class Current: 623/17.11
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/1626 Control means; Display units
• CPC Class Codes: A61B 17/1739 specially adapted for particular parts of the body
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/7043 with a longitudinal element fixed to one or more transverse elements which connect multiple screws or hooks
• CPC Class Codes: A61B 17/7055 connected to sacrum, pelvis or skull
• CPC Class Codes: A61B 17/7074 Tools specially adapted for spinal fixation operations other than for bone removal or filler handling A61B17/7062, A61B17/808, A61B17/8858 take precedence; for spinal image producing devices A61B90/36, A61B34/20; markers A61B90/39
• CPC Class Codes: A61B 17/8645 Headless screws, e.g. ligament interference screws
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61F 2/30988 Other joints not covered by any of the groups A61F2/32 - A61F2/4425
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30179 X-shaped
• CPC Class Codes: A61F 2002/30622 Implant for fusing a joint or bone material
• CPC Class Codes: A61F 2002/30995 for sacro-iliac joints
• CPC Class Codes: A61F 2002/4687 Mechanical guides for implantation instruments
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00179 Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/00359 Bone or bony tissue

Abstract

A sacroiliac joint fixation fusion system that provides a method of fixation and fusion of the sacroiliac joint and a sacroiliac joint implant which upon placement within the articular region of the sacroiliac joint facilitates stability and fusion of the sacroiliac joint.

Claims

1. A sacroiliac joint implant adapted for placement in an interarticular space between articular surfaces within an articular region of a sacroiliac joint, the implant comprising:

an elongate body comprising a first longitudinal axis;

a first and a second wing member extending radially from the first longitudinal axis of the elongate body, the second wing member disposed in substantially opposed relation to the first wing member, the first and the second wing members forming a first plane;

a third and a fourth wing member extending radially from the first longitudinal axis of the elongate body, the third wing member disposed in substantially opposed relation to the fourth wing member, the third and the fourth wing members forming a second plane, wherein the second plane is disposed in a substantially orthogonal relation to the first plane,

the first, the second, the third, and the fourth wing members generally extend along the first longitudinal axis of the elongate body; and

a first bore through the sacroiliac joint implant, wherein the first bore comprises a second longitudinal axis that is generally transverse to the first longitudinal axis of the elongate body,

wherein the second longitudinal axis is disposed in a third plane, wherein the third plane is disposed in the proximity of and parallel to the second plane.

2. The sacroiliac joint implant of claim 1, wherein the elongate body is cylindrical.

3. The sacroiliac joint implant of claim 1, wherein the first and the second wing members extend a first height radially from the first longitudinal axis of the elongate body, and the third and the fourth wing members extend a second height radially from the first longitudinal axis of the elongate body, wherein the first height exceeds the second height.

4. The sacroiliac joint implant of claim 1, wherein the first and second wing members comprise a first width, and the third and the fourth wing members comprise a second width, wherein the first width exceeds the second width.

5. The sacroiliac joint implant of claim 1, wherein the elongated body comprises a first distal end and a second proximal end, wherein the first distal end comprises a bullnose shape.

6. The sacroiliac joint implant of claim 1, wherein the first bore extends through the elongate body.

7. The sacroiliac joint implant of claim 1, wherein the second longitudinal axis is not perpendicular to the first longitudinal axis of the elongate body.

8. The sacroiliac joint implant of claim 1, further comprising an anchoring element, wherein the anchoring element is received by the first bore.

9. The sacroiliac joint implant of claim 8, wherein the anchoring element comprises a bone screw.

10. The sacroiliac joint implant of claim 1, further comprising a second bore, wherein the second bore has a third longitudinal axis parallel with the first longitudinal axis of the elongated body.

11. The sacroiliac joint implant of claim 10, wherein the second bore is threaded and configured to fixedly mate with an insertion tool.

12. The sacroiliac joint implant of claim 10, wherein the second bore further comprises:

a second distal end disposed along the first longitudinal axis at about an intersection of the first and the second bores; and

a second proximal end disposed along the first longitudinal axis at the first proximal end of the elongate body.

13. The sacroiliac joint implant of claim 1, further comprising one or more aperture elements which communicate through one or more of the first, the second, the third, or the fourth wing members or elongate body.

14. The sacroiliac joint implant of claim 13, further comprising an amount of biocompatible material located within one or more of the aperture elements, wherein the biocompatible material promotes bone growth.

15. The sacroiliac joint implant of claim 1, further comprising a coating coupled to at least a portion of at least one of the elongated body, the first, the second, the third, or the fourth wing members capable of biocompatible osseointegration with the interarticular surfaces of the sacroiliac joint.