System and method for cavity generation for surgical planning and initial placement of a bone prosthesis

Patent 5824085 Issued on October 20, 1998. Estimated Expiration Date:

September 30, 2016. 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.

Abstract Claims Description Full Text

Patent References

Image-directed robotic system for precise robotic surgery including redundant consistency checking
Patent #: 5086401
Issued on: 02/04/1992
Inventor: Glassman, et al.

Image-directed robotic system for precise robotic surgery including redundant consistency checking
Patent #: 5299288
Issued on: 03/29/1994
Inventor: Glassman, et al.

Image-directed robotic system for precise robotic surgery including redundant consistency checking Patent #: 5408409
Issued on: 04/18/1995
Inventor: Glassman, et al.

Inventors

Assignee

Integrated Surgical Systems, Inc.

Application

No. 724497 filed on 09/30/1996

US Classes:

128/898, Methods606/53, Orthopedic instrumentation606/79, Orthopedic cutting instrument606/86, Means for use in bone reperation623/914, Bone700/245Robot control

Examiners

Primary: Buiz, Michael
Assistant: Reip, David O.

Attorney, Agent or Firm

Townsend and Townsend and Crew LLP

International Class

A61F 002/28

Abstract

Methods, systems and apparatus for planning the position of a prosthesis in a long bone in orthopaedic surgical procedures, such as hip replacement surgery, knee replacement surgery, long bone osteotomies, and the like. A bone model is generated from a scanned image of a bone, a prosthesis model is selected from a library of prosthesis models and then a cavity model is formed based on the prosthesis model and/or the bone model. The cavity model may then be positioned over the bone model, either interactively by the surgeon or automatically through an algorithm based on clinical parameters, to determine a reasonable location for implantation of a prosthesis within the bone. The cavity model allows the surgeon to optimize placement of the implant within the bone, and it provides important clinical information to the surgeon, such as areas in which press fits are provided, extension areas for possible subsidence and access areas for allowing the surgeon to insert the implant into the cavity.