Orthopaedic milling guide for milling intersecting planes

• US 5,593,411 A
• Filed: 03/13/1995
• Issued: 01/14/1997
• Est. Priority Date: 03/13/1995
• Status: Expired due to Term

• Current Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Zimmer Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Harris, James C., Stalcup, Gregory C.
• Primary Examiner(s): Buiz, Michael Powell
• Assistant Examiner(s): LEONARDO, MARK
• Application Number:
  US08/403,034
• Time in Patent Office: 673 Days
• Field of Search: 606/79, 606/80, 606/81, 606/82, 606/83, 606/84, 606/85, 606/86, 606/87, 606/88, 606/89, 606/96
• US Class Current: 606/88
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 2017/1602 Mills

Abstract

A milling guide for connection to an exposed end of a bone for guiding a milling device along the bone to mill away portions of the bone for accommodation of an orthopaedic implant. The guide includes a plurality of walls positioned in intersecting planes, each of the walls including a slot therein for capturing a milling device. A recess in the travel path of the milling device permits the milling device to rotate from the plane of one wall to that of another wall whereby the milling device is not removed from said milling guide during the cutting of intersecting planes on the bone.

Claims

1. In combination a milling guide and a milling device, said milling device including a bobbin shaped nose portion defined by a plate held in space relationship from a body of the nose by a cylinder, the milling device further including a burr having a shaft, wherein said shaft extends through the cylinder and contacts a drive member to rotate the burr relative to the nose portion, said burr is spaced from the plate by said shaft, said milling guide being adapted for connection to an exposed end of a bone, said milling guide including a first wall and a second wall positioned intersecting planes, each of said first and second walls including a slot therein defined by a pair of rails, said bobbin shaped nose portion being accommodated by said slots such that the plate is on one side of said rails and the body of the nose is on another side of the rails with the cylinder passing between said rails such that said bobbin shaped nose portion is captured by the slot in said walls, the first wall including a notch formed therein adjacent said second wall, said notch accommodating a portion of said plate as said bobbin shaped nose portion moves along the notch in said first wall into the notch in said second wall, said notch constituting means for permitting the milling device to shift from the slot in the first wall into the slot in the second wall without removing the milling device from the milling guide.

2. The combination of claim 1 further including a notch formed in the second wall adjacent the first wall, the notch in the second wall accommodating a portion of the plate as said milling device is shifted from the slot in the second wall into the slot in the first wall.

3. The combination of claim 2 wherein the notch formed in the first wall is in alignment with said one side of said rails forming the slot in said second wall, the notch in the second wall being in alignment with said one side of said rails forming the slot in said first wall.