SYSTEMS FOR AND METHODS OF FUSING A SACROILIAC JOINT

• US 20140031935A1
• Filed: 07/19/2013
• Published: 01/30/2014
• Est. Priority Date: 01/13/2010
• Status: Active Grant

• Current Assignee: JCBD, LLC
• Original Assignee: JCBD, LLC
• Inventors: Donner, Edward Jeffrey, Donner, Christopher Thomas
• Granted Patent: US 9,333,090 B2
• Time in Patent Office: Days
• 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 17/1671 for the spine
• 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
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61F 2/30988 Other joints not covered by any of the groups A61F2/32 - A61F2/4425
• CPC Class Codes: A61F 2/4405 for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes devices implanted between spinous or transverse processes A61B17/7062
• 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 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30179 X-shaped
• CPC Class Codes: A61F 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/304 with additional means for limiting said sliding
• CPC Class Codes: A61F 2002/30401 with additional means for preventing or locking said sliding
• CPC Class Codes: A61F 2002/30428 : made by inserting a protrusion into a slot
• CPC Class Codes: A61F 2002/30484 : Mechanically expandable devices located on the first prosthetic part for locking into or onto the second prosthetic part
• CPC Class Codes: A61F 2002/305 : Snap connection
• CPC Class Codes: A61F 2002/30507 : using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/3055 : for adjusting length
• CPC Class Codes: A61F 2002/30579 : with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30601 : telescopic
• CPC Class Codes: A61F 2002/30622 : Implant for fusing a joint or bone material
• CPC Class Codes: A61F 2002/30774 : internally-threaded
• CPC Class Codes: A61F 2002/30828 : parallel
• 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
• CPC Class Codes: B33Y 80/00 : Products made by additive manufacturing

Abstract

Systems for and methods of fusing a sacroiliac joint are provided which include an implant assembly adapted to be inserted into the joint space defined by the bones of a sacrum and an ilium, a delivery tool and means for inserting the implant assembly into the joint. The implant assembly includes a body disposed intermediate distal and proximate end portions thereof and having oppositely disposed side members adapted to expandably engage the sacroiliac joint following insertion of the assembly into the joint space. A tool is provided and provides a means for placing the implant assembly adjacent the sacroiliac joint, inserting it into the joint space and expanding means are thereafter applied to expand the oppositely disposed side members into operative engagement with the joint.

Claims

1. A system for fusing a sacroiliac joint, the system comprising:

an implant assembly adapted to be inserted into the sacroiliac joint and having a distal end portion, a proximal end portion, and a body portion extending between the distal and proximal end portions, the body portion including first and second oppositely disposed side members, each side member being structured and arranged to expandably engage the sacroiliac joint following insertion therein;

means for expanding the first and second oppositely disposed side members into operative engagement with the sacroiliac joint;

a delivery tool for inserting the implant assembly into the sacroiliac joint; and

a tool interface formed in the implant assembly adapted to receive the delivery tool for inserting the implant assembly into the sacroiliac joint.

2. The sacroiliac joint fusing system of claim 1 wherein each of the side members includes a bone engaging surface having plurality of ridges formed thereon, each of the plurality of ridges being structured and arranged to securely engage the sacroiliac joint when urged into operative engagement therewith by the expanding means.

3. The sacroiliac joint fusing system of claim 1 further including a guide mechanism for guiding the expandable side members into operative engagement with the sacroiliac joint.

4. The sacroiliac joint fusing system of claim 3 wherein the guide mechanism includes a guide piece operatively connected to each of the expandable side members and disposed in the body portion, each guide piece including a sloped surface and at least one guide pin formed thereon, the at least one guide pin adapted to guide the movement of the side member into operative engagement with the sacroiliac joint.

5. The sacroiliac joint fusing system of claim 4 wherein the body portion includes at least one slot adapted to slideably receive the at least one guide pin formed on each guide piece to guide a respective one of the side members into operative engagement with the sacroiliac joint.

6. The sacroiliac joint fusing system of claim 4 wherein each of the sloped surfaces is adapted to operatively engage the expanding means whereby each of the expandable side surfaces are urged into operative engagement with the sacroiliac joint in response to operation of the expanding means.

7. The sacroiliac joint fusing system of claim 1 wherein the expanding means comprises an actuating body, the actuating body being movably disposed in the proximal end of the implant assembly.

8. The sacroiliac joint fusing system of claim 6 wherein the expanding means comprises an actuating body, the actuating body being movably disposed in the proximal end of the implant assembly and including a tapered end portion structured and arranged to operatively engage each of the sloped surfaces.

9. The sacroiliac joint fusing system of claim 8 wherein the actuating body is at least partially threaded.

10. The sacroiliac joint fusing system of claim 1 wherein the tool interface comprises at least one slot formed in the proximal end of the body portion.

11. The sacroiliac joint fusing system of claim 1 wherein the delivery tool comprises:

an implant arm including a retainer rod including a shaft terminating at one end in a pair of opposed, arm members biased apart a preselected distance and adapted to receive the implant assembly; and

a sleeve member structured and arranged to coaxially receive the retainer rod, the sleeve being structured and arranged to advance coaxially distally over the retainer rod whereby the biased-apart arm members are urged into operative engagement with the implant assembly for insertion thereof into the sacroiliac joint.

12. The sacroiliac joint fusing system of claim 1 wherein the delivery tool comprises a tong apparatus.

13. A method of fusing a sacroiliac joint comprising:

positioning an implant assembly adjacent a sacroiliac joint having a joint space defined by bone material, the implant assembly comprising a distal end portion, a proximal end portion, and a body portion extending between the distal and proximal end portions, the body portion including first and second oppositely disposed side members, each side member being structured and arranged to expandably engage the sacroiliac joint following insertion therein;

delivering the implant device into the sacroiliac joint space, the implant assembly being positioned in the joint space such that the first and second oppositely disposed side members are generally coplanar with a joint plane of the sacroiliac joint space; and

expanding the first and second oppositely disposed side members into operative engagement with the bone material defining the sacroiliac joint space.

14. The method of claim 13 wherein each of the side members includes a bone engaging surface having a plurality of ridges formed thereon structured and arranged to operatively engage the bone material defining the sacroiliac joint space in response to the expansion of the implant assembly.

15. The method of claim 13 wherein each of the side members includes guide means operatively connected thereto and adapted to guide the movement of the side member into operative engagement with the sacroiliac joint in response to the expansion of the side members.

16. The method of claim 13 wherein the each of the side members includes a sloped surface, the sloped surface being structured and arranged to operatively engage means for expanding the oppositely disposed side members.

17. The method of claim 13 wherein the body portion of the implant assembly includes an actuating body movably disposed in the proximal end of the implant assembly, the expanding step further comprising moving the actuating body into engagement with each of the oppositely disposed side members to expand them into engagement with the bone material defining the sacroiliac joint.

18. The method of claim 17 wherein the actuating body includes a tapered surface.

19. The method of claim 16 wherein the body portion of the implant assembly includes an actuating body having a tapered surface movably disposed in the proximal end of the implant assembly, the expanding step further comprising moving the tapered surface of the actuating body into engagement each of the sloped surfaces of the oppositely disposed side members to expand them into engagement with the bone material defining the sacroiliac joint.

20. The method of claim 19 wherein the actuating body is at least partially threaded.