Systems and methods of fusing a sacroiliac joint

• US 9,421,109 B2
• Filed: 07/18/2013
• Issued: 08/23/2016
• Est. Priority Date: 01/13/2010
• Status: Active Grant

• Current Assignee: JCBD, LLC
• Original Assignee: JCBD, LLC
• Inventors: Donner, Edward Jeffrey, Donner, Christopher Thomas
• Primary Examiner(s): Robert, Eduardo C
• Assistant Examiner(s): MATTHEWS, TESSA M
• Application Number:
  US13/945,053
• Publication Number:
  US 20140088707A1
• Time in Patent Office: 1,132 Days
• Field of Search: 623/17.11, 623/17.16
• US Class Current: 1/1
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• 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 17/844 with expandable anchors or anchors having movable parts
• 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: A61B 2017/0225 flexible, e.g. fabrics, meshes, or membranes
• 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 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• 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 2002/4622 having the shape of a forceps or a clamp
• 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

One implementation of the present disclosure may take the form of a sacroiliac joint fusion system including a joint implant and a delivery tool. The joint implant includes at least one integral anchor configured to move relative to a body of the implant when being brought into anchoring engagement with bone defining a sacroiliac joint space in which the body of the implant is located. In one embodiment, the at least one anchor extends distally and laterally relative to a body of the implant when being brought into anchoring engagement with the bone. In another embodiment, the at least one anchor rotates relative to the body of the implant when being brought into anchoring engagement with the bone. The delivery tool is configured to support the implant off of a distal portion of the tool. The delivery tool is further configured to cause the displacement of the at least one anchor relative to the implant body so as to cause the at least one anchor to be brought into anchoring engagement with the bone.

Claims

1. A system for treating a sacroiliac joint via implantation, the system comprising:

a sacroiliac joint implant configured for implantation in the sacroiliac joint and comprising a body including a leading distal end, a trailing proximal end opposite the leading distal end, a lateral side located between the leading distal end and trailing proximal end, and a passage extending in a distal-lateral direction through the body from the trailing proximal end such that the passage distally projects in a direction that extends out the lateral side, the body further includes an edge side extending perpendicular to the lateral side, the edge side being thinner than the lateral side, the edge side and lateral side defining a corner and two adjacent sides of a box-like portion of the body, the body further includes another edge side opposite the edge side and another lateral side opposite the lateral side, wherein a width between the another edge side and the edge side is between approximately 10 mm and approximately 20 mm, and a thickness between the another lateral side and the lateral side is between approximately 3 mm and approximately 10 mm, the body further includes a projecting portion of the distal leading end that projects generally perpendicular the edge side such that the body has an L-shaped appearance when viewed from a direction perpendicular to the lateral side;

a delivery tool comprising a distal region and a proximal region opposite the distal region, the distal region configured to operably couple with the sacroiliac joint implant such that the sacroiliac joint implant is selectively releasably supported off of the distal region and the trailing proximal end is immediately adjacent the distal region, the distal region including a guide that aligns with the passage when the distal region is operably coupled with the sacroiliac joint implant; and

an anchor member comprising a distal termination, a proximal termination and a length extending between the distal termination and the proximal termination, wherein the anchor member is distally displaceable within the passage from a non-deployed state to a deployed state,

wherein, when the distal region is operably coupled with the sacroiliac joint implant and the anchor member is in the non-deployed state, the distal termination does not project out of the lateral side, the proximal termination and at least a part of the length are located in the guide, and the distal termination is oriented so as to distally displace along the passage upon the anchor member being caused to transition from the non-deployed state to the deployed state,

wherein, when the anchor member is in the deployed state, the distal termination extends outward from the lateral side and the at least a part of the length is located in the passage.

2. A system for treating a sacroiliac joint via implantation, the system comprising:

a sacroiliac joint implant configured for implantation in the sacroiliac joint and comprising a body including a leading distal end, a trailing proximal end opposite the leading distal end, a lateral side located between the leading distal end and trailing proximal end, and a passage extending in a distal-lateral direction through the body from the trailing proximal end such that the passage distally projects in a direction that extends out the lateral side, the body further includes an edge side extending perpendicular to the lateral side, the edge side being thinner than the lateral side, the edge side and lateral side defining a corner and two adjacent sides of a box-like portion of the body, the body further includes another edge side opposite the edge side and another lateral side opposite the lateral side, wherein a width between the another edge side and the edge side is between approximately 10 mm and approximately 20 mm, and a thickness between the another lateral side and the lateral side is between approximately 3 mm and approximately 10 mm, the body further comprises a cumulative exterior side edge border surface that defines a shape resembling a shape of an adult human sacroiliac joint as viewed in a direction perpendicular a plane of the sacroiliac joint;

a delivery tool comprising a distal region and a proximal region opposite the distal region, the distal region configured to operably couple with the sacroiliac joint implant such that the sacroiliac joint implant is selectively releasably supported off of the distal region and the trailing proximal end is immediately adjacent the distal region, the distal region including a guide that aligns with the passage when the distal region is operably coupled with the sacroiliac joint implant; and

an anchor member comprising a distal termination, a proximal termination and a length extending between the distal termination and the proximal termination, wherein the anchor member is distally displaceable within the passage from a non-deployed state to a deployed state,

wherein, when the distal region is operably coupled with the sacroiliac joint implant and the anchor member is in the non-deployed state, the distal termination does not project out of the lateral side, the proximal termination and at least a part of the length are located in the guide, and the distal termination is oriented so as to distally displace along the passage upon the anchor member being caused to transition from the non-deployed state to the deployed state,

wherein, when the anchor member is in the deployed state, the distal termination extends outward from the lateral side and the at least a part of the length is located in the passage.

3. A system for treating a sacroiliac joint via implantation, the system comprising:

a sacroiliac joint implant configured for implantation in the sacroiliac joint and comprising a body including a leading distal end, a trailing proximal end opposite the leading distal end, a lateral side located between the leading distal end and trailing proximal end, and a passage extending in a distal-lateral direction through the body from the trailing proximal end such that the passage distally projects in a direction that extends out the lateral side, the body further includes an edge side extending perpendicular to the lateral side, another edge side opposite the edge side, and another lateral side opposite the lateral side, wherein a width between the edge side and the another edge side is substantially greater than a thickness between the lateral side and another lateral side, the body further includes a projecting portion of the distal leading end that projects generally perpendicular the edge side such that the body has an L-shaped appearance when viewed from a direction perpendicular to the lateral side;

a delivery tool comprising a distal region and a proximal region opposite the distal region, the distal region configured to operably couple with the sacroiliac joint implant such that the sacroiliac joint implant is selectively releasably supported off of the distal region and the trailing proximal end is immediately adjacent the distal region, the distal region including a guide that aligns with the passage when the distal region is operably coupled with the sacroiliac joint implant; and

an anchor member comprising a distal termination, a proximal termination and a length extending between the distal termination and the proximal termination, wherein the anchor member is distally displaceable within the passage from a non-deployed state to a deployed state,

wherein, when the distal region is operably coupled with the sacroiliac joint implant and the anchor member is in the non-deployed state, the distal termination does not project out of the lateral side, the proximal termination and at least a part of the length are located in the guide, and the distal termination is oriented so as to distally displace along the passage upon the anchor member being caused to transition from the non-deployed state to the deployed state,

wherein, when the anchor member is in the deployed state, the distal termination extends outward from the lateral side and the at least a part of the length is located in the passage.

4. The system of claim 3, wherein the projecting portion is unitarily constructed with the edge side.

5. A system for treating a sacroiliac joint via implantation, the system comprising:

a sacroiliac joint implant configured for implantation in the sacroiliac joint and comprising a body including a leading distal end, a trailing proximal end opposite the leading distal end, a lateral side located between the leading distal end and trailing proximal end, and a passage extending in a distal-lateral direction through the body from the trailing proximal end such that the passage distally projects in a direction that extends out the lateral side, the body further includes an edge side extending perpendicular to the lateral side, another edge side opposite the edge side, and another lateral side opposite the lateral side, wherein a width between the edge side and the another edge side is substantially greater than a thickness between the lateral side and another lateral side, the body further includes a cumulative exterior side edge border surface that defines a shape resembling a shape of an adult human sacroiliac joint as viewed in a direction perpendicular a plane of the sacroiliac joint;

a delivery tool comprising a distal region and a proximal region opposite the distal region, the distal region configured to operably couple with the sacroiliac joint implant such that the sacroiliac joint implant is selectively releasably supported off of the distal region and the trailing proximal end is immediately adjacent the distal region, the distal region including a guide that aligns with the passage when the distal region is operably coupled with the sacroiliac joint implant; and

an anchor member comprising a distal termination, a proximal termination and a length extending between the distal termination and the proximal termination, wherein the anchor member is distally displaceable within the passage from a non-deployed state to a deployed state,

wherein, when the distal region is operably coupled with the sacroiliac joint implant and the anchor member is in the non-deployed state, the distal termination does not project out of the lateral side, the proximal termination and at least a part of the length are located in the guide, and the distal termination is oriented so as to distally displace along the passage upon the anchor member being caused to transition from the non-deployed state to the deployed state,

wherein, when the anchor member is in the deployed state, the distal termination extends outward from the lateral side and the at least a part of the length is located in the passage.

6. The system of claim 5, wherein the cumulative exterior side edge border surface extends unitarily and unbroken.

7. An implant configured for insertion into a sacroiliac joint via a deliver tool comprising an implant interfacing arrangement on a distal end of the tool the implant comprising:

a) a body comprising;

i) a distal region defining a leading insertion end of the body;

ii) a proximal region opposite the distal region;

iii) a tool interfacing arrangement proximal the distal region and complementary to the implant interfacing arrangement such that the tool interfacing arrangement and implant interfacing arrangement can releasably connect together such that the implant can be supported off of the tool distal end during insertion of the implant into the sacroiliac joint via the tool and released from the tool distal end once the implant is inserted into the sacroiliac joint;

iv) a first lateral side surface between the distal and proximal regions;

v) a second lateral side surface between the distal and proximal regions and spaced-apart from the first lateral side surface by a thickness, the first and second lateral side surfaces are at least substantially parallel to each other;

vi) a first side edge surface located between the first and second lateral side surfaces and a second side edge surface located between the first and second lateral side surfaces and spaced-apart from the first side edge surface by a width, wherein the width is substantially greater than the thickness; and

vii) a cumulative exterior side edge border surface that defines a shape resembling a shape of an adult human sacroiliac joint as viewed in a direction perpendicular a plane of the sacroiliac joint, wherein the cumulative exterior side edge border surface extends unitarily and unbroken;

b) a first anchor supported in the body and configured to transition from a recessed condition to a deployed condition, the deployed condition being when a bone engagement portion of the first anchor extends from one of the lateral sides, the recessed condition being when the bone engagement portion does not extend from any of the lateral sides, the first anchor configured to be transitioned from the recessed condition to the deployed condition by being actuated from the proximal region.

8. An implant configured for insertion into a sacroiliac joint via a delivery tool comprising an implant interfacing arrangement on a distal end of the tool, the implant comprising:

a) a body comprising;

i) a distal region defining a leading insertion end of the body;

ii) a Proximal region opposite the distal region;

iii) a tool interfacing arrangement proximal the distal region and complementary to the implant interfacing arrangement such that the tool interfacing arrangement and implant interfacing arrangement can releasably connect together such that the implant can be supported off of the tool distal end during insertion of the implant into the sacroiliac joint via the tool and released from the tool distal end once the implant is inserted into the sacroiliac joint;

iv) a first lateral side surface between the distal and proximal regions;

v) a second lateral side surface between the distal and proximal regions and spaced-apart from the first lateral side surface by a thickness, the first and second lateral side surfaces are at least substantially parallel to each other;

vi) a first side edge surface located between the first and second lateral side surfaces and a second side edge surface located between the first and second lateral side surfaces and spaced-apart from the first side edge surface by a width, wherein the width is substantially greater than the thickness; and

vii) a cumulative exterior side edge border surface that defines a shape resembling a boot for a human foot, wherein the cumulative exterior side edge border surface extends unitarily and unbroken;

b) a first anchor supported in the body and configured to transition from a recessed condition to a deployed condition, the deployed condition being when a bone engagement portion of the first anchor extends from one of the lateral sides, the recessed condition being when the bone engagement portion does not extend from any of the lateral sides, the first anchor configured to be transitioned from the recessed condition to the deployed condition by being actuated from the proximal region.

9. An implant configured for insertion into a sacroiliac joint via a delivery tool comprising an implant interfacing arrangement on a distal end of the tool, the implant comprising:

a) a body comprising;

i) a distal region defining a leading insertion end of the body;

ii) a proximal region opposite the distal region;

iii) a tool interfacing arrangement proximal the distal region and complementary to the implant interfacing arrangement such that the tool interfacing arrangement and implant interfacing arrangement can releasably connect together such that the implant can be supported off of the tool distal end during insertion of the implant into the sacroiliac joint via the tool and released from the tool distal end once the implant is inserted into the sacroiliac joint;

iv) a first lateral side surface between the distal and proximal regions;

v) a second lateral side surface between the distal and proximal regions and spaced-apart from the first lateral side surface by a thickness, the first and second lateral side surfaces are at least substantially parallel to each other;

vi) a first side edge surface located between the first and second lateral side surfaces and a second side edge surface located between the first and second lateral side surfaces and spaced-apart from the first side edge surface by a width, wherein the width is substantially greater than the thickness; and

vii) a projecting portion of the distal region that projects generally perpendicular from the second side edge surface such that the body generally has an L-shaped appearance when viewed from a direction perpendicular to either of the first or second lateral side surfaces, wherein the projecting portion is unitarily constructed with the second side edge surface;

b) a first anchor supported in the body and configured to transition from a recessed condition to a deployed condition, the deployed condition being when a bone engagement portion of the first anchor extends from one of the lateral sides, the recessed condition being when the bone engagement portion does not extend from any of the lateral sides, the first anchor configured to be transitioned from the recessed condition to the deployed condition by being actuated from the proximal region.

10. The implant of claim 9, wherein the body further includes a first keel extending generally perpendicularly from the first lateral side surface and extending between the distal and proximal regions.

11. The implant of claim 10, wherein the body further includes a second keel substantially parallel to the first keel and extending generally perpendicularly from the second lateral side surface, the second keel extending between the distal and proximal regions.

12. The implant of claim 11, wherein the first and second keels are substantially coplanar to each other.

13. The implant of claim 12, wherein the first and second keels are generally positioned centrally on the respective first and second lateral side surfaces so as to be generally equidistant between a top edge surface and a bottom edge surface.

14. A system for treating a sacroiliac joint via implantation, the system comprising:

a sacroiliac joint implant configured for implantation in the sacroiliac joint and comprising a body including a leading distal end, a trailing proximal end opposite the leading distal end, a lateral side located between the leading distal end and trailing proximal end, and a passage extending in a distal-lateral direction through the body from the trailing proximal end such that the passage distally projects in a direction that extends out the lateral side;

a delivery tool comprising a distal region and a proximal region opposite the distal region, the distal region configured to operably couple with the sacroiliac joint implant such that the sacroiliac joint implant is selectively releasably supported off of the distal region and the trailing proximal end is immediately adjacent the distal region, the distal region including a guide that aligns with the passage when the distal region is operably coupled with the sacroiliac joint implant, the delivery tool further comprises an implant arm and an anchor arm, the implant arm comprising the distal region and the proximal region, the anchor arm coupled to the implant arm and configured to deliver another anchor element generally transverse to a longitudinal axis of the body of the sacroiliac joint implant; and

an anchor member comprising a distal termination, a proximal termination and a length extending between the distal termination and the proximal termination, wherein the anchor member is distally displaceable within the passage from a non-deployed state to a deployed state,

wherein, when the distal region is operably coupled with the sacroiliac joint implant and the anchor member is in the non-deployed state, the distal termination does not project out of the lateral side, the proximal termination and at least a part of the length are located in the guide, and the distal termination is oriented so as to distally displace along the passage upon the anchor member being caused to transition from the non-deployed state to the deployed state,

wherein, when the anchor member is in the deployed state, the distal termination extends outward from the lateral side and the at least a part of the length is located in the passage.

15. The system of claim 14, wherein in being coupled together, the implant arm and the anchor arm form an angle relative to each other, and the angle is non-adjustable.

16. An implant configured for insertion into a sacroiliac joint via a delivery tool comprising an implant interfacing arrangement on a distal end of the tool, the implant comprising:

a) a body comprising;

i) a distal region defining a leading insertion end of the body,

ii) a proximal region opposite the distal region;

iii) a tool interfacing arrangement proximal the distal region and complementary to the implant interfacing arrangement such that the tool interfacing arrangement and implant interfacing arrangement can releasably connect together such that the implant can be supported off of the tool distal end during insertion of the implant into the sacroiliac joint via the tool and released from the tool distal end once the implant is inserted into the sacroiliac joint;

iv) an outer surface comprising;

a first lateral side surface between the distal and proximal regions;

a second lateral side surface between the distal and proximal regions and spaced-apart from the first lateral side surface by a thickness;

a first side edge surface located between the first and second lateral side surfaces;

a second side edge surface located between the first and second lateral side surfaces and spaced-apart from the first side edge surface by a width; and

a projecting portion at the distal region that projects generally perpendicular to the first and second side edge surfaces such that the body has an L-shaped appearance when viewed from a direction perpendicular to the first or second lateral side surfaces; and

b) a first anchor supported in the body and configured to transition from a recessed condition to a deployed condition, the deployed condition being when a bone engagement portion of the first anchor extends from the outer surface of the body, the recessed condition being when the bone engagement portion does not extend from the outer surface of the body, the first anchor configured to be transitioned from the recessed condition to the deployed condition by being actuated from the proximal region.

17. The implant of claim 16, wherein the deployed condition is when the bone engagement portion of the first anchor extends from the first or second lateral side surface, the recessed condition being when the bone engagement portion does not extend from either of the first or second lateral side surface.

19. The implant of claim 16, wherein the outer surface is unitarily constructed.

20. The implant of claim 16, wherein the body further includes a first keel extending generally perpendicularly from the first lateral side surface and extending between the distal and proximal regions.

21. The implant of claim 20, wherein the body further includes a second keel substantially parallel to the first keel and extending generally perpendicularly from the second lateral side surface, the second keel extending between the distal and proximal regions.

22. The implant of claim 21, wherein the first and second keels are substantially coplanar to each other.

23. The implant of claim 22, wherein the first and second keels are generally positioned centrally on the respective first and second lateral side surfaces so as to be generally equidistant between the first and second side edge surfaces.

24. The implant of claim 16, wherein the body further comprises a first anchor passage extending in a distal-lateral direction through the body, and the first anchor comprises a distal end and a proximal end opposite the distal end, wherein the anchor is displaceable in the first anchor passage from the recessed position wherein the distal end is recessed within the first anchor passage to the deployed position wherein the distal end projects distal-lateral from the body.

25. The implant of claim 16, wherein the body further comprises a first anchor passage extending in a generally distal direction through the body, and the first anchor comprises a distal end and a proximal end opposite the distal end, wherein the anchor is displaceable in the first anchor passage from the recessed position wherein the distal end is recessed within the first anchor passage to the deployed position wherein the distal end projects generally distal from the body.

26. The implant of claim 16, wherein the body further comprises a first anchor passage extending in a generally lateral direction through the body, and the first anchor comprises a distal end and a proximal end opposite the distal end, wherein the anchor is displaceable in the first anchor passage from the recessed position wherein the distal end is recessed within the first anchor passage to the deployed position wherein the distal end projects generally lateral from the body.

27. The implant of claim 16, wherein the first anchor is configured to lock in the deployed position against retraction into the body.

28. The implant of claim 16, wherein the first anchor comprises a threaded screw.

29. The implant of claim 16, wherein the body further comprises a first radius opposite the projecting portion, the first radius arcuately transitioning the first side edge surface into an extreme distal surface that faces generally distal and is located between the first and second lateral side surfaces.

30. The implant of claim 29, wherein the body further comprises an overall length extending between the extreme distal surface and an extreme proximal surface of the proximal region, the overall length being a distance of between approximately 35 mm and approximately 60 mm.

31. The implant of claim 29, wherein the body further comprises a second radius arcuately transitioning the second side edge surface into a proximal surface of the projecting portion that faces generally proximal and is located between the first and second lateral side surfaces.

32. The implant of claim 31, wherein the second radius is different in size as compared to the first radius.

33. The implant of claim 32, wherein the second radius is smaller than the first radius.

34. The implant of claim 16, wherein the projecting portion comprises a third side edge surface that defines an extreme side extent of the projecting portion and is offset from the second side edge surface by a distance of between approximately 8 mm and approximately 20 mm.

35. The implant of claim 16, wherein the body further comprises a first opening extending through the body from the first lateral side surface to the second lateral side surface, the first opening defined by an interior wall surface generally perpendicular to the first lateral side surface.

36. The implant of claim 35, wherein the first opening is defined in the proximal region of the body.

37. The implant of claim 35, wherein the first opening is defined in the distal region of the body.

38. The implant of claim 35, wherein the body further comprises a second opening extending through the body from the first lateral side surface to the second lateral side surface, the first opening defined in the proximal region of the body, the second opening distal the first opening and defined in the distal region of the body.

39. The implant of claim 38, wherein the second opening extends at least partially into the projecting portion.

40. The implant of claim 35, wherein the first opening extends at least partially into the projecting portion.

41. The implant of claim 16, wherein the body further comprises first and second openings extending through the body from the first lateral side surface to the second lateral side surface, each of the first and second openings defined by a respective interior wall surface perpendicular to the first lateral side surface, the first opening defined in a rectangular box-like portion of the proximal region of the body, the second opening distal the first opening and defined in the distal region of the body.

42. The implant of claim 41, wherein the second opening extends at least partially into the projecting portion.

63. A system for treating a sacroiliac joint via implantation, the system comprising:

a) the sacroiliac joint implant as in claim 16; and

,

b) a delivery tool comprising a distal region and a proximal region opposite the distal region, the delivery tool distal region comprising an implant interfacing arrangement, the delivery tool distal region including a guide that aligns with an anchor passage of the implant when the delivery tool implant interfacing arrangement is operably coupled with the sacroiliac joint implant tool interfacing arrangement.

64. The system of claim 63, wherein the delivery tool further comprises an implant arm and an anchor arm, the implant arm comprising the distal region and the proximal region, the anchor arm coupled to the implant arm proximal the delivery tool distal region and configured to deliver another anchor element generally transverse to a longitudinal axis of the body of the sacroiliac joint implant.

65. The system of claim 63, wherein the guide is funnel shaped including a proximal anchor loading end that is wider in diameter than a distal anchor discharging end that opens into the anchor passage when the delivery tool distal region is operably coupled with the sacroiliac joint implant.

18. The implant of 16, wherein the first and second lateral side surfaces are unitarily constructed.

49. The implant of claim 18, wherein the first and second keels are generally positioned centrally on the respective first and second lateral side surfaces so as to be generally equidistant between the first and second side edges.

43. An implant configured for insertion into a sacroiliac joint via a delivery tool comprising an implant interfacing arrangement on a distal end of the tool, the implant comprising:

a) a body comprising;

i) a distal region defining a leading insertion end of the body,

ii) a proximal region opposite the distal region;

iii) a tool interfacing arrangement proximal the distal region and complementary to the implant interfacing arrangement such that the tool interfacing arrangement and implant interfacing arrangement can releasably connect together such that the implant can be supported off of the tool distal end during insertion of the implant into the sacroiliac joint via the tool and released from the tool distal end once the implant is inserted into the sacroiliac joint;

iv) an outer surface comprising;

a first lateral side between the distal and proximal regions;

a second lateral side between the distal and proximal regions and spaced-apart from the first lateral side by a thickness;

a first side edge located between the first and second lateral sides;

a second side edge located between the first and second lateral sides and spaced-apart from the first side edge by a width, the first and second side edges defining a cumulative side edge border surface that defines a shape resembling a shape of an adult human sacroiliac joint as viewed in a direction perpendicular to a plane of the sacroiliac joint; and

b) a first anchor supported in the body and configured to transition from a recessed condition to a deployed condition, the deployed condition being when a bone engagement portion of the first anchor extends from the outer surface of the body, the recessed condition being when the bone engagement portion does not extend from the outer surface of the body, the first anchor configured to be transitioned from the recessed condition to the deployed condition by being actuated from the proximal region.

44. The implant of claim 43, wherein the deployed condition is when the bone engagement portion of the first anchor extends from the first or second lateral side surface, the recessed condition being when the bone engagement portion does not extend from either of the first or second lateral side surface.

45. The implant of claim 43, wherein the outer surface is unitarily constructed.

46. The implant of claim 43, wherein the body further includes a first keel extending generally perpendicularly from the first lateral side surface and extending between the distal and proximal regions.

47. The implant of claim 46, wherein the body further includes a second keel substantially parallel to the first keel and extending generally perpendicularly from the second lateral side surface, the second keel extending between the distal and proximal regions.

48. The implant of claim 47, wherein the first and second keels are substantially coplanar to each other.

50. The implant of claim 43, wherein the body further comprises a first anchor passage extending in a distal-lateral direction through the body, and the first anchor comprises a distal end and a proximal end opposite the distal end, wherein the anchor is displaceable in the first anchor passage from the recessed position wherein the distal end is recessed within the first anchor passage to the deployed position wherein the distal end projects distal-lateral from the body.

51. The implant of claim 43, wherein the body further comprises a first anchor passage extending in a generally distal direction through the body, and the first anchor comprises a distal end and a proximal end opposite the distal end, wherein the anchor is displaceable in the first anchor passage from the recessed position wherein the distal end is recessed within the first anchor passage to the deployed position wherein the distal end projects generally distal from the body.

52. The implant of claim 43, wherein the body further comprises a first anchor passage extending in a generally lateral direction through the body, and the first anchor comprises a distal end and a proximal end opposite the distal end, wherein the anchor is displaceable in the first anchor passage from the recessed position wherein the distal end is recessed within the first anchor passage to the deployed position wherein the distal end projects generally lateral from the body.

53. The implant of claim 43, wherein the first anchor is configured to lock in the deployed position against retraction into the body.

54. The implant of claim 43, wherein the first anchor comprises a threaded screw.

55. The implant of claim 43, wherein the body further comprises a first opening extending through the body from the first lateral side surface to the second lateral side surface, the first opening defined by an interior wall surface generally perpendicular to the first lateral side surface.

56. The implant of claim 55, wherein the first opening is defined in the proximal region of the body.

57. The implant of claim 55, wherein the first opening is defined in the distal region of the body.

58. The implant of claim 55, wherein the body further comprises a second opening extending through the body from the first lateral side surface to the second lateral side surface, the first opening defined in the proximal region of the body, the second opening distal the first opening and defined in the distal region of the body.

59. The implant of claim 58, wherein the second opening is defined by an interior wall surface generally perpendicular to the first lateral side surface, the interior wall surface of the second opening includes a curvature that generally matches a curvature of the side edge border surface.

60. The implant of claim 55, wherein the interior wall surface includes a curvature that generally matches a curvature of the side edge border surface.

61. The implant of claim 55, wherein the body further comprises a proximal bore extending distally from a proximal end and into communication with the first opening, the first opening including a bone graft having a bore in alignment with the proximal bore, the bore configured to allow at least one of the following:

i) a retainer member to pass therethrough such that the graft is retained within the opening during implantation of the implant, or ii) reception of an injectate therein.

62. The implant of claim 61, wherein the bone graft further comprises passages communicating between an external surface of the bone graft and the bore of the bone graft.

66. A system for treating a sacroiliac joint via implantation, the system comprising:

a) the sacroiliac joint implant as in claim 43; and

,

b) a delivery tool comprising a distal region and a proximal region opposite the distal region, the delivery tool distal region comprising an implant interfacing arrangement, the delivery tool distal region including a guide that aligns with an anchor passage of the implant when the delivery tool implant interfacing arrangement is operably coupled with the sacroiliac joint implant tool interfacing arrangement.

67. The system of claim 66, wherein the delivery tool further comprises an implant arm and an anchor arm, the implant arm comprising the distal region and the proximal region, the anchor arm coupled to the implant arm proximal the delivery tool distal region and configured to deliver another anchor element generally transverse to a longitudinal axis of the body of the sacroiliac joint implant.

68. The system of claim 66, wherein the guide is funnel shaped including a proximal anchor loading end that is wider in diameter than a distal anchor discharging end that opens into the anchor passage when the delivery tool distal region is operably coupled with the sacroiliac joint implant.