Patient specific implants and instrumentation for patellar prostheses

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United States of America Patent

PATENT NO 9675399
SERIAL NO

13761629

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Abstract

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Patient specific implants and instrumentation for replacing a portion of a patella. Methods for producing patient specific implants and instrumentation include conducting imaging studies of the patient's native patella, deriving measurements of the patella and surrounding soft tissues from the imaging studies, manufacturing customized implants and instrumentation specific to the derived measurements, and implanting a customized implant using the customized instrumentation. Patient specific instrumentation includes: a patellar clamp ring, an anterior clamp, a restraining arm, a posterior clamping surface, a dual bore reaming collet, a reamer, a reaming depth gauge, and a resection cutting guide. Patient specific portions of a patellar implant include: topography of the posterior articular surface, facet angle, shape and dimensions of the anterior attachment surface, implant length, implant width, implant thickness and the outer perimeter shape of the implant.

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Patent Owner(s)

Patent OwnerAddress
RIES MICHAEL D115 ST THOMAS WAY TIBURON CA 94920

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Butters, Joshua A Chandler, US 110 5804
Ries, Michael D Tiburon, US 46 1060
Rindal, Bjorn N Chandler, US 10 654
Slater, Nicholas Chandler, US 57 1964

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