Ankle replacement system and method

Patent metadata

Field	Value
Publication number	US-11864778-B2
Application number	US-202117402760-A
Country	US
Kind code	B2
Filing date	Aug 16, 2021
Priority date	Dec 27, 2012
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A system that provides a guide arm, a ratchet arm frame configured to be coupled 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. The first radiopaque object has a length that corresponds to a length of a second prosthesis component. 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. The second radiopaque object has a profile that corresponds to a profile of a first prosthesis component for installation on a second bone.

First claim

What is claimed is:

1. A sagittal sizing guide comprising:
a first component comprising a mating extension, an extension opposite the mating extension, and an elongated sliding area, wherein the mating extension is configured to be attached at a first side of a first bone to a position adjustment device attached to the first bone and wherein the extension opposite the mating extension is configured to be manipulated;
a second component connected to the first component and configured to extend in front of a second side of the first bone, wherein the second component is configured to slide along the elongated sliding area; and
a radiopaque guide connected to the second component that corresponds to a length of a prosthesis component so that when a surgical alignment system is positioned for use on a patient, the radiopaque guide identifies a location at which a first resection of the first bone is to be performed.

2. The sagittal sizing guide of claim 1 , wherein the radiopaque guide comprises a first radiopaque object and a second radiopaque object.

3. The sagittal sizing guide of claim 2 , wherein the first radiopaque object comprises a linearly-extending component configured to extend in front of the second side of the first bone.

4. The sagittal sizing guide of claim 3 , wherein the first bone is a tibia.

5. The sagittal sizing guide of claim 2 , wherein the second radiopaque object is configured to be fluoroscopically aligned with a second bone.

6. The sagittal sizing guide of claim 5 , wherein the second radiopaque object is beneath the first radiopaque object.

7. The sagittal sizing guide of claim 6 , wherein the first bone is a tibia and the second bone is a talus.

8. The sagittal sizing guide of claim 7 , wherein the mating extension is configured to be inserted into a slot formed in the position adjustment device.

9. The sagittal sizing guide of claim 1 , wherein the mating extension and the extension opposite the mating extension are generally perpendicular to the elongated sliding area.

10. The sagittal sizing guide of claim 1 , wherein the second component comprises a locking knob configured to lock the second component along the elongated sliding area.

11. The sagittal sizing guide of claim 1 , wherein the second component comprises a ratchet arm configured to releasably fix the radiopaque guide.

Assignees

• Wright Medical Tech Inc

Inventors

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

Classifications

• A61B17/1739 Primary

  specially adapted for particular parts of the body · CPC title

• A61B17/15

  Guides therefor · CPC title

• A61B17/1682

  for the foot or ankle · CPC title

• A61B17/1703

  using imaging means, e.g. by X-rays · CPC title

• A61F2/4202

  for ankles · CPC title