Distal reamer for use during an orthopaedic surgical procedure to implant a revision hip prosthesis

Patent metadata

Field	Value
Publication number	US-10064725-B2
Application number	US-201213440406-A
Country	US
Kind code	B2
Filing date	Apr 5, 2012
Priority date	Apr 6, 2011
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

Surgical instruments and methods for use in implanting a modular femoral prosthesis during performance of a hip revision procedure are disclosed, and include a distal reamer operable to ream an intramedullary canal of a patient's femur during a surgical procedure. The distal reamer includes an elongated shank having a cutting head formed in a distal end of the elongated shank and a drive connector formed in a sidewall positioned at an opposite, proximal end of the elongated shank. The cutting head has a plurality of helical cutting flutes arranged in a geometry that corresponds with the geometry of the distal stem component. The drive connector has a female drive socket and a number of locking slots formed in the sidewall so as to open into the female drive socket.

First claim

The invention claimed is:

1. A distal reamer operable to ream an intramedullary canal of a patient's femur during a surgical procedure to implant a distal stem component of a modular orthopaedic hip prosthesis, comprising:
an elongated shank having (i) a cutting head formed in a distal end of the elongated shank, the cutting head having a plurality of helical cutting flutes arranged in a geometry that corresponds with the geometry of the distal stem component, and (ii) a drive connector formed in a sidewall positioned at an opposite, proximal end of the elongated shank, the drive connector having (a) a female drive socket extending inwardly from a superior surface of the elongated shank, and (b) a number of locking slots formed in the sidewall so as to open into the female drive socket, each locking slot extending inferiorly from an opening defined in the superior surface of the elongated shank.

2. The distal reamer of claim 1 , wherein the locking slots comprise L-shaped locking slots.

3. The distal reamer of claim 1 , wherein the locking slots are formed in the sidewall on opposite sides of the female drive socket.

4. The distal reamer of claim 1 , wherein the female drive socket comprises a female hex drive socket.

5. A distal reamer operable to ream an intramedullary canal of a patient's femur during a surgical procedure to implant a distal stem component of a modular orthopaedic hip prosthesis, comprising:
a cutting head having a plurality of helical cutting flutes arranged in a geometry that corresponds with the geometry of the distal stem component,
a female drive socket, and
a threaded bore having a superior end that opens into the drive socket and extending inferiorly away therefrom,
further comprises a number of locking slots arranged around, and opening into, the female drive socket.

6. The distal reamer of claim 5 , wherein the locking slots comprise L-shaped locking slots.

7. The distal reamer of claim 5 , wherein the locking slots are formed in a sidewall on opposite sides of the female drive socket.

8. The distal reamer of claim 5 , wherein the female drive socket comprises a female hex drive socket.

Assignees

• Carr Jonathan E
• Hood Megan A
• Mccleary Larry G
• Fortin Michael J
• Depuy Synthes Products Inc

Inventors

• Carr Jonathan E
• Hood Megan A
• Mccleary Larry G
• Fortin Michael J

Classifications

• A61F2002/30738

  Sleeves · CPC title

• A61F2002/4627

  with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument · CPC title

• A61F2002/4622

  having the shape of a forceps or a clamp · CPC title

• A61F2002/3674

  Connections of proximal parts to distal parts · CPC title

• A61F2002/4662

  for measuring penetration depth · CPC title