Ankle replacement system and method

Patent metadata

Field	Value
Publication number	US-9974588-B2
Application number	US-201414365474-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Dec 27, 2012
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

Various surgical devices and methods are disclosed herein. Also disclosed is multi-component prosthesis, which can be used as an ankle prosthesis. One of the disclosed surgical alignment systems 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 system, comprising:
a first surgical tool including a body having a first bone-contacting side and a second side that is disposed opposite the first bone-contacting side, the first bone-contacting side including a patient-specific surface sized and configured to be coupled to a first bone of a patient, the second side of the body including a pin holder extending from a superior portion of the second side in a direction away from the second side, the pin holder defining a hole therethrough that defines an axis that is parallel to an axis related to the first bone, the hole sized and configured to receive a pin therein, wherein the body defines a first set of holes that extend through an inferior portion of the body.

2. The system of claim 1 , wherein the first surgical tool includes a pin disposed within the hole, the pin formed from a radiopaque material.

3. The system of claim 1 , further comprising a second surgical tool defining a second set of holes, wherein a position of the first set of holes defined by the first surgical tool correspond to a position of the second set of holes defined by the second surgical tool.

4. The system of claim 1 , wherein the bone comprises a tibia.

5. The system of claim 4 , wherein the axis is a longitudinal axis of the tibia.

6. The system of claim 1 , wherein the axis is a mechanical axis.

7. The system of claim 1 , wherein the patient-specific surface is configured to mate with a distal end of a tibia.

8. The system of claim 1 , further comprising a second surgical tool, wherein the first set of holes are positioned with respect to the body of the first surgical tool such that they provide a guide for orienting a placement of the second surgical tool once the first surgical tool has been removed from an engagement with a first set of pins received within the first set of holes.

9. The system of claim 1 , wherein the superior portion of the body defines a third set of holes.

10. The system of claim 9 , wherein the pin holder is located between at least two of the third set of holes on the superior portion of the first surgical instrument.

11. A method comprising:
placing a guide having a patient-specific surface on a first bone, the guide including a pin holder that engages a pin that extends in a direction that is parallel to an axis related to the first bone, wherein the first bone is a tibia, and wherein the axis is at least one of a mechanical axis and an anatomical axis; and
inserting a plurality of pins into a pair of spaced apart holes defined by the guide.

12. The method of claim 11 , further comprising:
sliding the guide along the plurality of pins to remove the guide from contacting the first bone; and
sliding a conversion instrument over a first subset of the plurality of pins.

Assignees

• Wright Medical Tech Inc

Inventors

• Stemniski Paul
• Reynolds David
• Mcginley Shawn
• Luna Ramon

Classifications

• A61B17/88 Primary

  Osteosynthesis instruments;} Methods or means for implanting or extracting internal {or external} fixation devices {(A61B17/7074 takes precedence) · CPC title

• A61B17/1739 Primary

  specially adapted for particular parts of the body · CPC title

• A61B17/1682

  for the foot or ankle · CPC title

• A61F2/4684

  Trial or dummy prostheses · CPC title

• A61F2/4606

  of wrists or ankles; of hands, e.g. fingers; of feet, e.g. toes · CPC title