Systems and methods for treating a sacroiliac joint

Patent metadata

Field	Value
Publication number	US-2023355408-A1
Application number	US-202318224116-A
Country	US
Kind code	A1
Filing date	Jul 20, 2023
Priority date	Jan 25, 2021
Publication date	Nov 9, 2023
Grant date	—

Abstract

A method of treating a sacroiliac joint and/or a region proximate the sacroiliac joint includes distracting and/or stabilizing a recess between a sacral wall of a sacrum and an ilial wall of an ilium, cutting a surface of the ilial wall using a cutting device, and positioning an implant having a first planar wall and a second planar wall opposite the first planar wall into the recess, such that the first planar wall of the implant is in contact with an uncut surface of the sacral wall, and the second planar wall is in contact with the cut surface of the ilial wall. The implant can be formed as a wedge-shape, a double-wedge shape, or a cuboid shape.

First claim

We claim:

1 . A method of treating a sacroiliac joint and/or a region proximate the sacroiliac joint, the method comprising:
distracting a recess between a sacral wall of a sacrum and an ilial wall of an ilium; cutting a surface of the ilial wall using a cutting device; and positioning an implant having a first planar wall and a second planar wall opposite the first planar wall into the distracted recess, such that the first planar wall of the implant is in contact with an uncut surface of the sacral wall, and the second planar wall is in contact with the cut surface of the ilial wall.

2 . The method of claim 1 , wherein each of the first and second planar walls are defined by at least one first side edge and a second side edge, the first side edge of the first planar wall is distanced from the first side edge of the second planar wall by a first separation distance, and the second side edge of the first planar wall is distanced from the second side edge of the second planar wall by a second separation distance; and
wherein the first separation distance is smaller than the second separation distance.

3 . The method of claim 2 , wherein the implant comprises:
third and fourth planar walls each extending between the first and second planar walls, the third planar wall extending between a third side edge of the first planar wall and a third side edge of the second planar wall, the fourth planar wall extending between a fourth side edge of the first planar wall and a fourth side edge of the second planar wall, wherein the third planar wall has a length that is shorter than that of the fourth planar wall.

4 . The method of claim 1 , further comprising:
inserting a guide tube into the recess between the sacral wall and the ilial wall; positioning the guide tube within the recess using two distal tangs of the guide tube, the two distal tangs being asymmetrically formed to fit within the recess; anchoring, using a pin, the guide tube within the recess and parallel to at least a portion of the sacral wall; and inserting the implant into the recess through the guide tube.

5 . The method of claim 4 , further comprising:
creating a surgical access point for inserting the guide tube into the recess by a posterior approach.

6 . The method of claim 4 , wherein the implant is shaped as of one of a cuboid, a rectangular cuboid, a wedge-shaped cuboid, and a double-wedge-shaped cuboid.

7 . The method of claim 6 , wherein at least one surface of the implant is a curved surface.

8 . The method of claim 4 , wherein cutting a surface of the ilial wall using a cutting device further comprises:
inserting the cutting device through the guide tube; penetrating, with the cutting device, a portion of the ilium; and removing, with the cutting device, a portion of the ilial wall to form a cavity within the ilium.

9 . The method of claim 8 , wherein the sacral wall is not penetrated by the cutting device.

10 . The method of claim 9 , further comprising:
inserting a screw through a hole of the implant into the ilial wall, the screw configured to serve as a base of a lumbo-sacral construct.

11 . The method of claim 9 , further comprising:
inserting at least one screw through a screw hole of the implant into at least one of the ilial wall and the sacral wall.

12 . An implant for treating a sacroiliac joint and/or a region proximate the sacroiliac joint; the implant comprising:
a first planar wall; and a second planar wall opposite the first planar wall; wherein each of the first and second planar walls are defined by at least a first side edge and a second side edge; wherein the first side edge of the first planar wall is distanced from the first side edge of the second planar wall by a first separation distance, and the second side edge of the first planar wall is distanced from the second side edge of the second planar wall by a second separation distance; and wherein the first separation distance is smaller than the second separation distance; and wherein the implant is a double-wedge-shaped cuboid.

13 . The implant of claim 12 , the implant further comprising:
first and second sidewalls extending between the first and second planar walls, the second sidewall opposite the first sidewall, wherein the second sidewall is a curved sidewall.

14 . The implant of claim 12 , wherein at least one of the first and second planar walls comprise a plurality of surface features having anchors perpendicular to the at least one of the first and second planar walls.

15 . The implant of claim 12 , wherein the implant defines a cavity that extends from the first planar wall to the second planar wall, wherein the cavity is configured to receive a bone fusion material.

16 . A guide tube for inserting an implant into a recess of a patient between an ilial wall and a sacral wall, the guide tube comprising:
a first end; a second end opposite the first end; a wall extending from the first end to the second end, the wall forming a channel between the first end and the second end, the wall having a first and second flat surfaces formed on an outer surface of the wall extending from the first end to the second end, the first and second flat surfaces positioned opposite one another; and first and second tangs extending from the second end, the first and second tangs formed as flat extensions of the wall, each having a first edge extending distally from and parallel to the first flat surface of the wall, a distal tip, and a second tapered edge from the distal tip to the second flat surface of the wall.

17 . The guide tube of claim 16 , wherein the first flat surface is configured to be positioned in contact with a sacral wall in the recess of the patient.

18 . The guide tube of claim 17 , wherein the first tang and second tang are asymmetrical, such that at least one of a length of the first edge, a width of the distal tip, or a shape of the second edge of the first tang are different than the second tang.

19 . A kit for treating a sacroiliac joint and/or a region proximate the sacroiliac joint using an implant, the kit comprising:
a plurality of implants, each implant having a double-wedge-shaped cuboid shape; and at least one guide tube comprising:
a first end;
a second end opposite the first end;
a wall extending from the first end to the second end, the wall forming a channel between the first end and the second end, the wall having a first and second flat surfaces formed on an outer surface of the wall extending from the first end to the second end, the first and second flat surfaces positioned opposite one another; and
first and second tangs extending from the second end, the first and second tangs formed as flat extensions of the wall, each having a first edge extending distally from and parallel to the first flat surface of the wall, a distal tip, and a second tapered edge from the distal tip to the second flat surface of the wall.

20 . The kit of claim 19 further comprising:
at least one of a rectangular-shaped cutting device, an L-shaped cutting device, a box-cutter, a box chisel, a curette, a distractor, a rasp, an inserting device, a removing device, a screw, a hammer, and a pin.

Assignees

• Univ South Florida

Inventors

• Freeman Thomas B
• Hoghaug Thomas G

Classifications

• A61F2/4603 Primary

  for insertion or extraction of endoprosthetic joints or of accessories thereof · CPC title

• A61B17/1739

  specially adapted for particular parts of the body · CPC title

• A61F2/30749

  Fixation appliances for connecting prostheses to the body · CPC title

• A61F2002/30995

  for sacro-iliac joints · CPC title

• A61F2002/30263

  cubical · CPC title