Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2006-04-18
2006-04-18
Philogene, Pedro (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
C606S079000
Reexamination Certificate
active
07029479
ABSTRACT:
The present invention provides tools and methods for mapping and measuring the articular surface of a joint (or of any bony surface) and for fabricating a prosthetic device based on this recorded data. In one embodiment, once the defect of the chondral surface has been identified, a guide pin is inserted arthroscopically. A fixation screw is driven into the subchondral bone in relation to a reference axis that is approximately central to the defect, the fixation device also serving to define a tangent point to the surrounding articular surface. A further cylindrical proximal extension of the screw that eventually serves as a fixation element for the surface prosthetic is concealed with a cover or plug. The depth positioning of the cover or plug establishes an origin or reference point for all future measuring, cutting, and prosthetic machining operations. A measuring tool having a static post that establishes the axial location of origin is inserted on the reference axis. By rotating the outer arm or outrigger of the measuring tool relative to the static post while also maintaining contact with the articular surface, an axial displacement or Z dimension is established relative to the origin for any point along the known radial sweep of the outrigger to determine the final geometry of the prosthetic surface which fits within the defect. Data recorded during the mapping procedure is entered into parametric engineering design software or similar algorithm to define a three dimensional surface matched to the bearing surface geometry to be implanted and reproduce the anatomic contours mapped.
REFERENCES:
patent: 992819 (1911-05-01), Springer
patent: 1451610 (1923-04-01), Isidore
patent: 4044464 (1977-08-01), Schiess et al.
patent: 4158894 (1979-06-01), Worrell
patent: 4531517 (1985-07-01), Forte et al.
patent: 5358525 (1994-10-01), Fox et al.
patent: 5486178 (1996-01-01), Hodge
patent: 5580353 (1996-12-01), Mendes et al.
patent: 5616146 (1997-04-01), Murray
patent: 5632745 (1997-05-01), Schwartz
patent: 5702401 (1997-12-01), Shaffer
patent: 5782835 (1998-07-01), Hart et al.
patent: 6052909 (2000-04-01), Gardner
patent: 6081741 (2000-06-01), Hollis
patent: 6146385 (2000-11-01), Torrie et al.
patent: 6206885 (2001-03-01), Ghahremani et al.
patent: 6306142 (2001-10-01), Johanson et al.
patent: 6358253 (2002-03-01), Torrie et al.
patent: 6478801 (2002-11-01), Ralph et al.
patent: 6585666 (2003-07-01), Suh et al.
patent: 2004/0133276 (2004-07-01), Lang et al.
patent: 2933174 (1980-04-01), None
patent: 3516743 (1986-11-01), None
patent: 2242068 (1975-03-01), None
patent: 2 642 301 (1989-01-01), None
patent: WO 01/82677 (2001-11-01), None
“Partial Hemniarthroplasty for the Treatment of Osteonecrosis of the Femoral Head, An Experimental Study In The Dog”, The Journal of Bone & Joint Surgery, Aug. 2003, K. Ushio, M. Oka, S.H. Hyon, S. Yura, J. Toguchida, T. Nakamura, pp. 922-930.
M. Siguier, T. Judet, T. Sioguier, G. Charnley, B Brumpt and I Yugue, Preliminary Results of Partial Surface Replacement of the Femoral Head in Osteonecrosis, The Journal of Arthroplasty, vol. 14, No. 1, 1999, pp. 45-50.
T. Siguier, M. Siguier, T. Judet, G. Charnley and B Brumpt, Partial Resurfacing Arthroplasty of the Femoral Head in Avascular Necrosis, Clinical Orthopaedics and Related Research, No. 386, 2001, pp. 85-92.
Copy of Supplementary EPO Search Report for EPO Application No. 01932833.5, mailed Aug. 30, 2004.
Ek Steven W.
Tallarida Steven J.
ArthroSurface, Inc.
Grossman Tucker Perreault & Pfleger PLLC
Philogene Pedro
LandOfFree
System and method for joint resurface repair does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for joint resurface repair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for joint resurface repair will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3607903