Orthopaedic surgical instrument extraction system and method

Patent metadata

Field	Value
Publication number	US-10500065-B2
Application number	US-201715704087-A
Country	US
Kind code	B2
Filing date	Sep 14, 2017
Priority date	Sep 14, 2017
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A surgical instrument extraction system includes a first extraction tool having a first body that extends between a first end and a second end. The first extraction tool has a first plurality of threads formed on the first end and a second plurality of threads formed on the second end. A second extraction tool has a second body that extends between a first end having a first diameter and a second end having a second diameter greater than the first diameter. The second extraction tool has a first plurality of threads formed on the first end and a second plurality of threads formed on the second end The first body of the first extraction tool is sized to extend through a bore of the second extraction tool. The second body of the second extraction tool is sized to extend through a bore of the first extraction tool.

First claim

The invention claimed is:

1. A surgical instrument extraction system comprising:
a first extraction tool having a first body that extends between a first end and a second end, the first extraction tool having (i) a first plurality of threads formed on the first end and sized and shaped to selectively couple to a threaded end of a stem component of a femoral trial system and a stem component of a tibial trial system, (ii) a second plurality of threads formed on the second end and sized and shaped to selectively couple to a stem stabilizer of a femoral intramedullary adaptor, and (iii) a first bore extending through the body between a first side of the first body and a second side of the first body, and
a second extraction tool having a second body that extends between a first end having a first diameter and a second end having a second diameter greater than the first diameter, the second extraction tool having (i) a first plurality of threads formed on the first end and sized and shaped to selectively couple to an intermediate trial component of a tibial trial system, (ii) a second plurality of threads formed on the second end and sized and shaped to selectively couple to an intermediate trial component of a femoral trial system, and (iii) a second bore extending through the second body between a first side of the second body and a second side of the second body,
wherein the first body of the first extraction tool is sized to extend through the second bore of the second extraction tool to couple the first extraction tool to the second extraction tool to provide leverage to the second extraction tool to aid in extraction, and
wherein the second body of the second extraction tool is sized to extend through the first bore of the first extraction tool to couple the second extraction tool to the first extraction tool to provide leverage to the first extraction tool to aid in extraction.

2. The surgical instrument extraction system of claim 1 , wherein:
the first plurality of threads of the first extraction tool are female threads that are sized and shaped to couple to a male thread of the stem component of a femoral trial system and a male thread of the stem component of a tibial trial system, and
the second plurality of threads of the first extraction tool are male threads that are sized and shaped to couple to a female thread of the stem stabilizer.

3. The surgical instrument extraction system of claim 2 , wherein:
the stem component of the femoral trial system couples to the intermediate trial component of the femoral trial system, and
the stem component of the tibial trial system couples to the intermediate trial component of the tibial trial system.

4. The surgical instrument extraction system of claim 3 , wherein:
the stem component of the femoral trial system is a femoral stem trial, and
the stem component of the tibial trial system is a tibial stem trial.

5. The surgical instrument extraction system of claim 1 , wherein:
the first plurality of threads of the second extraction tool are male threads that are sized and shaped to couple to a female thread of the intermediate trial component of a tibial trial system, and
the second plurality of threads of the second extraction tool are male threads that are sized and shaped to couple to a female thread of the intermediate trial component of a femoral trial system.

6. The surgical instrument extraction system of claim 5 , wherein the first plurality of threads of the second extraction tool has a first thread diameter and the second plurality of threads of the second extraction tool has a second thread diameter, the second threads diameter being greater than the first thread diameter.

7. The surgical instrument extraction system of claim 6 , wherein the first end of the second extraction tool is a tapered end that tapers from the second body to the first diameter.

8. The surgical instrument extraction system of claim 7 , wherein the tapered end is sized and shaped to be received in a bore extending through a side of the stem stabilizer to remove the stem stabilizer from the femoral intramedullary adaptor.

9. The surgical instrument extraction system of claim 5 , wherein:
the intermediate trial component of a tibial trial system couples to a surface tibial trial of the tibial trial system, and
the intermediate trial component of the femoral trial system couples to a surface femoral trial of the femoral trial system.

10. The surgical instrument extraction system of claim 9 , wherein:
the intermediate trial component of a tibial trial system is at least one of a fixed bearing adaptor trial, a fixed bearing stem adaptor trial, a rotating platform stem adaptor trial, or a tibial offset adaptor trial, and
the intermediate trial component of the femoral trial system is at least one of a boss adaptor trial or a femoral offset adaptor trial.

Assignees

• Depuy Ireland Ultd Co

Inventors

• Gilson Lindsay L
• Walcutt Jeffrey M
• Wogoman Thomas E
• Deffenbaugh Daren L

Classifications

• A61F2/461 Primary

  of knees · CPC title

• A61F2/38

  for elbows or knees · CPC title

• A61F2002/30604

  modular · CPC title

• A61F2/4684 Primary

  Trial or dummy prostheses · CPC title

• A61F2/468

  Testing instruments for artificial joints (for testing non-implantable prostheses A61F2/76) · CPC title