Surgical instruments and methods of surgically preparing a patient's tibia

Patent metadata

Field	Value
Publication number	US-10271862-B2
Application number	US-201815973684-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	May 30, 2012
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A method of surgically preparing a proximal end of a tibia includes inserting an intramedullary orthopedic surgical instrument into a medullary canal of the tibia, securing an attachment device to the intramedullary orthopedic surgical instrument, attaching a cutting block to the attachment device, resecting the proximal end of the tibia using the cutting block to form a surgically-prepared surface, positioning a tibial base trial on the surgically-prepared surface, and inserting a keel punch through a slot defined in the tibial base trial and into the surgically-prepared surface of the tibia.

First claim

The invention claimed is:

1. A surgical instrument system for surgically preparing a proximal end of a tibia, the system comprising:
a surgical reamer including a proximal end, a distal end positioned opposite the proximal end, a plurality of cutting teeth formed at the distal end,
a housing including an opening sized to receive the proximal end of the surgical reamer and a pair of rails extending transverse to the opening,
a mounting frame configured to slide along the pair of rails, the mounting frame including a pair of openings sized to receive the pair of rails of the housing and a flange positioned below the pair of openings,
a cutting block including a channel sized to receive the flange to secure the cutting block to the mounting frame, the cutting block further including a cutting guide sized to receive a cutting tool to resect the proximal end of the tibia to create a surgically-prepared surface, and
a tibial base trial configured to be positioned on the surgically-prepared surface, the tibial base trial including a slot sized to receive a keel punch.

2. The system of claim 1 , further comprising a keel punch sized to extend through the slot defined in the tibial base trial.

3. The system of claim 2 , wherein the cutting guide is positioned below the channel of the cutting block.

4. The system of claim 3 , wherein the cutting guide further includes an opening defined in an upper surface, and the channel is positioned below the opening.

5. The system of claim 1 , further comprising a retention mechanism configured to secure the attachment device to the surgical reamer.

6. A method of surgically preparing a proximal end of a tibia, the method comprising:
inserting a surgical reamer into a medullary canal of the tibia,
securing a housing of an attachment device to a proximal end of the surgical reamer,
aligning a mounting frame with a channel defined in a cutting block including a cutting guide, the channel being positioned above the cutting guide,
advancing a flange into the channel defined in the cutting block to secure the mounting frame to the cutting block,
aligning a pair of openings in the mounting frame with a pair of rails of the housing,
sliding a mounting frame along a pair of rails toward the housing, and
resecting the proximal end of the tibia using the cutting guide to form a surgically-prepared surface.

7. The method of claim 6 , further comprising:
positioning a tibial base trial on the surgically-prepared surface, and
inserting a keel punch through a slot defined in the tibial base trial and into the surgically-prepared surface of the tibia.

8. The system of claim 1 , further comprising a retention mechanism operable to inhibit movement of the mounting frame relative to the housing.

Assignees

• Depuy Ireland Ultd Co

Inventors

• Thomas Kyle B
• Kilpela Todd A
• Gowers Steven P
• Keefer Ryan C
• Macumber William R
• Lee Jonathan C
• Robertson Lisa M

Classifications

• A61F2/4684

  Trial or dummy prostheses · CPC title

• A61B17/1764 Primary

  for the knee · CPC title

• A61F2/389

  Tibial components (A61F2/3868 takes precedence) · CPC title

• A61B17/1675

  for the knee · CPC title

• A61B17/164

  intramedullary · CPC title