Guided osteotome

Patent metadata

Field	Value
Publication number	US-10695076-B2
Application number	US-201715472534-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 29, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

The invention provides an osteotome which includes a curved guide member extending distally from its medial side. This curved guide member interfaces with the medial curvature of the femoral canal. The guide member guides the osteotome using the internal bone geometry of the femoral canal instead of relying on external anatomical landmarks.

First claim

The invention claimed is:

1. An osteotome for preparing a proximal end of a femur of a patient for installation of a stem of a femoral component of a prosthetic hip during hip replacement surgery, the osteotome comprising:
a body having
a proximal end connectable to a handle, and
a distal end having a cutting edge, wherein the distal end includes an aperture extending proximally into the body of the osteotome, and the aperture being bordered by the cutting edge, and
a curved guide member extending in a distal direction from the distal end of the body in which the curved guide member further includes cutting elements.

2. The osteotome of claim 1 , in which the distal end of the body has a medial side from which the curved guide member extends.

3. The osteotome of claim 1 , in which the curved guide member comprises;
a shaft with a longitudinal length, the shaft having;
a proximal end,
a distal tip,
a lateral face, and
a medial face,
in which each of the lateral face and medial face has a longitudinal curve extending between the proximal end of the guide member and the distal tip.

4. The osteotome of claim 1 , in which the cutting elements are disposed along the length of at least one of the lateral face and the medial face.

5. The osteotome of claim 1 , in which the cutting edge comprises at least one tooth extending distally therefrom.

6. The osteotome of claim 3 , in which the distal tip comprises a series of longitudinally disposed flutes.

7. The osteotome of claim 1 , in which the osteotome is a box osteotome.

8. An osteotome for preparing a proximal end of a femur of a patient for installation of a stem of a femoral component of a prosthetic hip during hip replacement surgery, the osteotome comprising:
a body having
a proximal end connectable to a handle, and
a distal end having a cutting edge, wherein the distal end includes an aperture extending proximally into the body of the osteotome, and the aperture being bordered by the cutting edge in which the cutting edge comprises at least one tooth extending distally therefrom, and
a curved guide member extending in a distal direction from the distal end of the body.

9. The osteotome of claim 8 , in which the distal end of the body has a medial side from which the curved guide member extends.

10. The osteotome of claim 8 , in which the curved guide member comprises:
a shaft with a longitudinal length, the shaft having;
a proximal end,
a distal tip,
a lateral face, and
a medial face,
in which each of the lateral face and medial face has a longitudinal curve extending between the proximal end of the guide member and the distal tip.

11. The osteotome of claim 8 , in which the curved guide member further includes cutting elements.

12. The osteotome of claim 10 , in which the cutting elements are disposed along the length of at least one of the lateral face and the medial face.

13. The osteotome of claim 11 , in which the distal tip comprises a series of longitudinally disposed flutes.

14. The osteotome of claim 8 , in which the osteotome is a box osteotome.

Assignees

• Depuy Ireland Ultd Co

Inventors

• Agunloye Marcus
• Birkbeck Alec
• Dutton Graeme
• Horne David
• Maack Thomas
• Mason John Bohannon
• Patnelli Richard

Classifications

• A61B17/175

  for preparing the femur for hip prosthesis insertion · CPC title

• A61B17/1659

  Surgical rasps, files, planes, or scrapers · CPC title

• A61B17/1735 Primary

  for rasps or chisels · CPC title

• A61B17/1668

  for the upper femur (A61B17/164 takes precedence) · CPC title