U.S. patents available from 1976 to present.
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Method and apparatus for locating bone cuts at the distal condylar femur region to receive a femoral prothesis and to coordinate tibial and patellar resection and replacement with femoral resection and replacement

Patent 6077270 Issued on June 20, 2000. Estimated Expiration Date: Icon_subject October 22, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Modular knee joint prosthesis
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System of inserts for the tibial component of a knee prosthesis
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Patent #: 5354075
Issued on: 10/11/1994
Inventor: Marik, et al.

External alignment system for preparing a femur for an implant
Patent #: 5364401
Issued on: 11/15/1994
Inventor: Ferrante, et al.

Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery
Patent #: 5417694
Issued on: 05/23/1995
Inventor: Marik, et al.

Femoral cutting guide
Patent #: 5454816
Issued on: 10/03/1995
Inventor: Ashby

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Inventor

Application

No. 177334 filed on 10/22/1998

US Classes:

606/88, Knee or knee joint606/87, Osteotomy jig or fixture606/102Gauging or measuring device

Examiners

Primary: Buiz, Michael
Assistant: Woo, Julian W.

Attorney, Agent or Firm

International Class

A61B 017/58

Abstract

A femoral resection apparatus and method is provided for resecting at least one of the posterior, anterior, and distal surfaces of the medial and lateral condyles of a femur to provide seating surface to receive a femoral prosthesis. The apparatus includes a measuring system to determine a location of the posterior, anterior, and distal resections to be made. The apparatus additionally includes a graduated scale to measure a distance between the anterior and posterior surfaces of the femoral condyles, including markings representing different prosthesis sizes and markings in between the size markings to account for the difference between the measured distance and the nearest prosthesis size. The femoral resection apparatus and method may be used in combination with a tibial resection apparatus and method for resecting a tibial plateau to provide a seating surface to receive a corresponding tibial prosthesis. The tibial apparatus includes a measurement scale to indicate a proper resection location. Additionally, a patellar reamer apparatus and method may be used to fit a patella with a patellar insert. The patellar reamer apparatus also includes a measurement scales to indicate a proper reaming depth which corresponds to a thickness of the patellar insert.

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