Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
1999-09-01
2001-06-12
Mancene, Gene (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
Reexamination Certificate
active
06245074
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to orthopaedic instrumentation, and, more particularly, to an orthopaedic reamer used to prepare a bone for receiving an implant.
2. Description of the Related Art
An orthopaedic reamer is used to prepare a bone for receiving an orthopaedic implant. For example, a glenoid reamer may include an elongate shaft which is attached to a cutting head. The cutting head may include an axial cutting face with a plurality of cutting teeth. The cutting head has a substantially constant radial perimeter. The surgeon places the cutting head against the glenoid surface and rotates the reamer using an external rotatable drive source such that the cutting teeth rotate to form the glenoid surface. Since the cutting head is of a substantially constant uniform diameter, the surgeon typically removes a relatively small amount of bone, and moves the cutting head away from the glenoid surface to inspect the cut surface. If additional bone must be removed, it is necessary for the surgeon to again insert the cutting head through the opening formed in the soft tissue and against the glenoid surface to be cut. This process of cutting the glenoid surface, moving the cutting head away from the glenoid surface, inspecting the glenoid surface, and reinserting the cutting head for additional cutting is time consuming.
What is needed in the art is a glenoid reamer which allows a surgeon to adequately inspect the glenoid surface during a cutting operation without removing the reamer from the bone.
SUMMARY OF THE INVENTION
The present invention provides an orthopaedic glenoid reamer having a cutting head with a plurality of visualization slots which extend radially inward from a radial perimeter to allow a surgeon to visualize a cut bone surface during surgery.
The invention comprises, in one form thereof, an orthopaedic reamer including an elongate shaft and a cutting head attached to an end of the shaft. The cutting head has a diameter which is larger than the shaft. The cutting head has a radial perimeter and an axial cutting face with a plurality of cutting teeth. The cutting head has at least one visualization groove which extends radially inward from the radial perimeter. The at least one visualization groove allows a surgeon to visualize the cut bone during surgery.
An advantage of the present invention is that the reamer does not have to be removed from the glenoid surface for the surgeon to inspect the cut bone surface.
Another advantage is that the visualization grooves in the cutting head may have different configurations and still allow adequate visualization of the cut bone surface.
REFERENCES:
patent: 1923177 (1933-08-01), Tucker
patent: 3412733 (1968-11-01), Ross
patent: 4011025 (1977-03-01), Kress
patent: 4023572 (1977-05-01), Weigand et al.
patent: 4199284 (1980-04-01), Kress et al.
patent: 4239427 (1980-12-01), Walton, II
patent: 5092719 (1992-03-01), Zsiger
patent: 5203653 (1993-04-01), Kudla
patent: 5376092 (1994-12-01), Hein et al.
patent: 5658290 (1997-08-01), Lechot
patent: 5709688 (1998-01-01), Salyer
patent: 5755719 (1998-05-01), Frieze et al.
patent: 5976148 (1999-11-01), Charpenet et al.
patent: 6045302 (2000-04-01), Orr
Global™ Total Shoulder Arthroplasty System Design Rationale and Surgical Technique; 1992 DePuy.
Kirschner Integrated Shoulder System™ Surgical Technique; Biomet, Inc. Published 1995.
The Neer II Total Shoulder System; the 3M™ Modular Shoulder System Surgical Technique; Published 1995.
Allard Randall N.
Meyers John E.
Bristol-Myers Squibb Co.
Mancene Gene
Robert Eduardo C.
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