Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2005-02-15
2005-02-15
Milano, Michael (Department: 3731)
Surgery
Instruments
Orthopedic instrumentation
C623S020230
Reexamination Certificate
active
06855150
ABSTRACT:
A patellar trial and drill guide for use during knee replacement surgery comprising an articular surface member and a fixation peg drill guide. The articular surface member is the exact geometry as the artificial patellar implant, and the drill guide aligns the holes for the fixation pegs of the artificial patellar implant. The patellar trial is placed on the resected patella in the desired position, a patellar clamp is used to temporary fix the patellar trial to the patella. The patella is then returned to its normal position and a trial reduction of the total knee replacement is completed. If the placement and/or size of the patellar trial is unacceptable, the patella is inverted, the patellar trial removed, and a different sized trial or new location is determined. The new patellar trial is secured to the resected patella, and another trial reduction of the total knee replacement is completed. This procedure can be repeated until the patellar trial is the correct size and in the proper location. If the placement of the patella is acceptable, the patella is inverted, the articular surface member removed, fixation peg holes are drilled using the fixation peg holes of the drill guide, and an artificial patellar implant is implanted on the patient's remaining patella.
REFERENCES:
patent: 4565192 (1986-01-01), Shapiro
patent: 4706660 (1987-11-01), Petersen
patent: 5030219 (1991-07-01), Matsen et al.
patent: 5035700 (1991-07-01), Kenna
patent: 5129908 (1992-07-01), Petersen
patent: 5380332 (1995-01-01), Ferrante
patent: 5383937 (1995-01-01), Mikhail
patent: 5480443 (1996-01-01), Elias
patent: 5486177 (1996-01-01), Mumme et al.
patent: 5520692 (1996-05-01), Ferrante
patent: 5536271 (1996-07-01), Daly et al.
patent: 5542947 (1996-08-01), Treacy
patent: 5571196 (1996-11-01), Stein
patent: 5571197 (1996-11-01), Insall
patent: 5575793 (1996-11-01), Carls et al.
patent: 5580353 (1996-12-01), Mendes et al.
patent: 5667512 (1997-09-01), Johnson
patent: 5690637 (1997-11-01), Wen et al.
patent: 5702465 (1997-12-01), Burkinshaw
patent: 5716360 (1998-02-01), Baldwin et al.
patent: 5769856 (1998-06-01), Dong et al.
patent: 5824099 (1998-10-01), Mendes et al.
patent: 5871540 (1999-02-01), Weissman et al.
patent: 5941884 (1999-08-01), Corvelli et al.
patent: 6010509 (2000-01-01), Delgado et al.
patent: 6056756 (2000-05-01), Eng et al.
patent: 6080196 (2000-06-01), Bertin
patent: 6159246 (2000-12-01), Mendes et al.
patent: 6174314 (2001-01-01), Waddell
patent: 6217617 (2001-04-01), Bonutti
“Surgical Techniques for Preparation of the Patella Using the Zimmer Patella Reamer”; Zimmer, Inc. 1990, 1991.
“NexGen Sytem Complete Knee Solution; Implant Options; The System of Specifics”; Zimmer, Inc. 1998.
“NexGen System Complete Knee Solution; Instrumentation Options; Surgeon-Specific” Zimmer, Inc. 1998.
“Nexgen Complete Knee Solution; Revision Instrumentation Surgical Technique for Legacy Constrained Condylar Knee”; Zimmer, Inc. 1997, 1999.
“Nexgen Complete Knee Solution; Surgical Technique for Cruciate Retaining Knees” Zimmer, Inc. 1995.
Godfrey & Kahn S.C.
Milano Michael
Nguyen Victor
LandOfFree
Patellar trial and drill guide for use in knee replacement... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Patellar trial and drill guide for use in knee replacement..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Patellar trial and drill guide for use in knee replacement... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3512332