Ankle replacement system and method

Patent metadata

Field	Value
Publication number	US-11116524-B2
Application number	US-201815982337-A
Country	US
Kind code	B2
Filing date	May 17, 2018
Priority date	Dec 27, 2012
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A surgical alignment system includes a guide arm, a ratchet arm frame configured to be coupled slidably to the guide arm, a ratchet arm configured to be coupled to the ratchet arm frame, and a sagittal sizing guide body configured to be coupled to the ratchet arm. The sagittal sizing guide body includes a first radiopaque object disposed at a first position and a second radiopaque object disposed at a second position that is spaced apart from the first position.

First claim

What is claimed is:

1. A surgical alignment system, comprising:
a guide arm;
a ratchet arm frame configured to be coupled slidably to the guide arm;
a ratchet arm configured to be coupled to the ratchet arm frame; and
a sagittal sizing guide body configured to be coupled to the ratchet arm, wherein the sagittal sizing guide body includes a first radiopaque object disposed at a first position that includes a pin disposed in a first hole defined by the sagittal sizing guide body and a second radiopaque object that includes a profile that corresponds to a profile of a first prosthesis component and is disposed at a second position that is spaced apart from the first position,
wherein the first radiopaque object has a length that corresponds to a length of a second prosthesis component so that when the surgical alignment system is positioned for use on a patient, the first radiopaque object identifies a location at which a first resection of a first bone is to be performed, and wherein the second radiopaque object has a profile that corresponds to a profile of a first prosthesis component for installation on a second bone.

2. The surgical alignment system of claim 1 , wherein the pin has a length that corresponds to a length of a second prosthesis component.

3. A surgical alignment system, comprising:
a position adjustment device configured to be attached to a first bone, comprising:
a body; and
an adjustment device configured to adjust a position of the body in at least a proximal-distal direction and a medial-lateral direction relative to the first bone; and

a sagittal sizing guide, comprising:
a first component configured to be attached at a first side of the first bone to the position adjustment device;
a second component connected to the first component and configured to extend in front of a second side of the first bone; and
a radiopaque guide connected to the second component configured to be fluoroscopically aligned relative to at least the first bone using the adjustment device.

4. The surgical alignment system of claim 3 , wherein the radiopaque guide corresponds to a length of a prosthesis component so that when the surgical alignment system is positioned for use on a patient, the first radiopaque object identifies a location at which a first resection of the first bone is to be performed.

5. The surgical alignment system of claim 3 , wherein the body comprises a slot and the first component comprises an extension configured to be inserted into the slot.

6. The surgical alignment system of claim 3 , wherein the position adjustment device further comprises a locking screw configured lock the position of the body.

7. The surgical alignment system of claim 3 , wherein the radiopaque guide comprises a first radiopaque object and a second radiopaque object.

8. The surgical alignment system of claim 7 , wherein the first radiopaque object comprises a linearly-extending component configured to extend in front of the second side of the first bone.

9. The surgical alignment system of claim 8 , wherein the first bone is a tibia.

10. The surgical alignment system of claim 7 , wherein the second radiopaque object is configured to be fluoroscopically aligned with a second bone.

11. The surgical alignment system of claim 10 , wherein the second radiopaque object is beneath the first radiopaque object.

12. The surgical alignment system of claim 11 , wherein the first bone is a tibia and the second bone is a talus.

Assignees

• Wright Medical Tech Inc

Inventors

• Mcginley Shawn
• Howles Robert M
• Free Daniel E
• Patel Vinay D
• Luna Ramon
• Schultz Matthew D

Classifications

• A61F2002/4207

  Talar components · CPC title

• A61F2002/4687

  Mechanical guides for implantation instruments · CPC title

• A61B2090/3966

  Radiopaque markers visible in an X-ray image · CPC title

• A61F2002/4205

  Tibial components · CPC title

• A61F2002/30878

  with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts · CPC title