Systems and methods for the fusion of the sacral-iliac joint

• US 20110087294A1
• Filed: 10/05/2010
• Published: 04/14/2011
• Est. Priority Date: 08/09/2004
• Status: Active Grant

• Current Assignee: SI-Bone, Incorporated
• Original Assignee: SI-Bone, Incorporated
• Inventors: Reiley, Mark A.
• Granted Patent: US 8,986,348 B2
• Time in Patent Office: Days
• US Class Current: 606/279
• CPC Class Codes: A61B 17/1615 Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1664 for the hip
• CPC Class Codes: A61B 17/1671 for the spine
• 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 17/683 comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
• CPC Class Codes: A61B 17/686 Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
• CPC Class Codes: A61B 17/7055 connected to sacrum, pelvis or skull
• CPC Class Codes: A61B 17/84 Fasteners therefor or fasteners being internal fixation devices
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 17/863 with thread interrupted or changing its form along shank, other than constant taper
• CPC Class Codes: A61B 17/864 hollow, e.g. with socket or cannulated
• CPC Class Codes: A61B 17/866 Material or manufacture
• CPC Class Codes: A61B 17/8665 Nuts
• CPC Class Codes: A61B 17/8685 comprising multiple separate parts
• CPC Class Codes: A61B 17/8695 Washers surrounding screw head in plate hole A61B17/8047, between bone plate and bone A61B17/8028
• CPC Class Codes: A61B 17/8875 Screwdrivers, spanners or wrenches
• CPC Class Codes: A61B 17/8891 at its periphery
• CPC Class Codes: A61B 17/8897 Guide wires or guide pins
• CPC Class Codes: A61B 2017/681 : Alignment, compression, or distraction mechanisms
• CPC Class Codes: A61B 2017/8675 : clamping effect due to tapering, e.g. conical thread
• CPC Class Codes: A61F 2/0077 : Special surfaces of prostheses, e.g. for improving ingrowth A61F2/30767 takes precedence
• CPC Class Codes: A61F 2/28 : Bones joints A61F2/30
• CPC Class Codes: A61F 2/30767 : Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• 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 2/4465 : having a circular or kidney shaped cross-section substantially perpendicular to the axis of the spine
• CPC Class Codes: A61F 2/447 : substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2002/30062 : (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30156 : triangular
• CPC Class Codes: A61F 2002/30179 : X-shaped
• CPC Class Codes: A61F 2002/3023 : wedge-shaped cylinders
• CPC Class Codes: A61F 2002/30235 : tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30405 : made by screwing complementary threads machined on the parts themselves
• CPC Class Codes: A61F 2002/305 : Snap connection
• CPC Class Codes: A61F 2002/30576 : with extending fixation tabs
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30622 : Implant for fusing a joint or bone material
• CPC Class Codes: A61F 2002/30777 : Oblong apertures
• CPC Class Codes: A61F 2002/30785 : parallel
• CPC Class Codes: A61F 2002/30787 : inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/3082 : Grooves
• CPC Class Codes: A61F 2002/30841 : Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/3085 : with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
• CPC Class Codes: A61F 2002/4238 : for tarso-metatarsal joints, i.e. TMT joints
• CPC Class Codes: A61F 2002/448 : comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2230/0023 : triangular
• CPC Class Codes: A61F 2230/0058 : X-shaped
• CPC Class Codes: A61F 2230/0069 : cylindrical
• 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 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00131 : Tantalum or Ta-based alloys
• CPC Class Codes: A61F 2310/00179 : Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/00329 : Glasses, e.g. bioglass
• CPC Class Codes: A61F 2310/00796 : Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
• CPC Class Codes: A61F 2310/0097 : Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics

Abstract

The sacral-iliac joint between an iliac and a sacrum is fused either by the creation of a lateral insertion path laterally through the ilium, through the sacral-iliac joint, and into the sacrum, or by the creation of a postero-lateral insertion path entering from a posterior iliac spine of an ilium, angling through the sacral-iliac joint, and terminating in the sacral alae. A bone fixation implant is inserted through the insertion path and anchored in the interior region of the sacrum or sacral alea to fixate the sacral-iliac joint.

Claims

1. A method for the fusion of the sacral-iliac joint between an iliac and a sacrum comprising

creating a lateral insertion path laterally through the ilium, through the sacral-iliac joint, and into the sacrum,

providing a bone fixation implant,

inserting the bone fixation implant through the insertion path laterally from the ilium, through the sacral-iliac joint, and into the sacrum, and

anchoring the bone fixation implant in the interior region of the sacrum to fixate the sacral-iliac joint.

2. A method according to claim 1

wherein the bone fixation implant comprises a screw-like structure.

3. A method according to claim 1

wherein the bone fixation implant comprises a fusion cage structure.

4. A method according to claim 1

wherein the bone fixation implant comprises an elongated implant structure having a rectilinear cross section including an exterior surface region treated to provide bony in-growth or through-growth along the implant structure.

5. A method according to claim 1

wherein the bone fixation implant comprises an elongated implant structure having a triangular cross section including an exterior surface region treated to provide bony in-growth or through-growth along the implant structure.

6. A method according to claim 1

whereby the bone fixation implant includes a bony in-growth or through-growth region to accelerate the fixation or fusion of the sacral-iliac joint fixated by the bone fixation implant.

7. A method according to claim 1

wherein the insertion path is created in a non-invasive manner without prior removal of cartilage.

8. A method according to claim 1

wherein the insertion path comprises a bore sized approximately at or approximately about an outer maximum dimension of the bone fixation implant.

9. A method for the fusion of the sacral-iliac joint between an iliac and a sacrum comprising

creating a postero-lateral insertion path entering from a posterior iliac spine of an ilium, angling through the sacral-iliac joint, and terminating in the sacral alae,

providing a bone fixation implant,

inserting the bone fixation implant through the postero-lateral insertion path, and

anchoring the bone fixation implant in the interior region of the sacral alae to fixate the sacral-iliac joint.

10. A method according to claim 9

wherein the bone fixation implant comprises a screw-like structure.

11. A method according to claim 9

wherein the bone fixation implant comprises a fusion cage structure.

12. A method according to claim 9

wherein the bone fixation implant comprises an elongated implant structure having a rectilinear cross section including an exterior surface region treated to provide bony in-growth or through-growth along the implant structure.

13. A method according to claim 9

wherein the bone fixation implant comprises an elongated implant structure having a triangular cross section including an exterior surface region treated to provide bony in-growth or through-growth along the implant structure.

14. A method according to claim 9

wherein the bone fixation implant comprises an elongated implant structure spanning the sacral-iliac joint, the elongated implant structure including an exterior surface region treated to provide bony in-growth or through-growth along the implant structure to accelerate the fusion of the sacral-iliac joint.

15. A method according to claim 9

whereby the bone fixation implant include a bony in-growth or through-growth region to accelerate the fixation or fusion of the sacral-iliac joint fixated by the bone fixation implant.

16. A method according to claim 9

wherein the insertion path is created in a non-invasive manner without prior removal of cartilage.

17. A method according to claim 9

wherein the insertion path comprises a bore sized approximately at or approximately about an outer maximum dimension of the bone fixation implant.