Depuy Products, Inc.

Paul Tomaszewski

Mark R DiSilvestro

John E Slamin

Terry L Dietz

Frank Matthews

Tony Petrella

Anthony J Petrella

Bob Hastings

A telemetric tibial tray includes a lower plate that defines a plurality of cylindrical transducer cavities having circular load diaphragms. An upper plate is attached to the lower plate through support posts projecting from the load diaphragms. The support posts have a circular cross-section and a diameter of about 5.0 mm. The lower plate further defines wiring channels communicating between the transducer cavities and a central cavity housing the circuit board for the telemetric tray. The wiring channels are arranged at a 45 degree angle relative to the sagittal plane of the knee joint in order to reduce the effects of the wiring channel intersection on the strain sensitivity of the tray. Each transducer cavity includes a radial strain gage array with four pairs of radially aligned strain gages, each pair aligned at a 45 degree angle relative to the sagittal plane of the knee joint. Each pair of strain gages includes an inner gage positioned at the point of maximum positive micro-strain across the diaphragm when loaded, and an outer gage positioned at the point of maximum negative micro-strain, to thereby increase the differential strain measured by the gages and increase the strain sensitivity of the tibial tray.

Telemetric tibial tray

A method for analyzing a prosthetic device includes the step of displaying a graphical user interface. The method further includes determining a user selected prosthetic device via the graphical user interface. The method also includes determining a first user selected orientation for the prosthetic device via the graphical user interface. Moreover, the method includes displaying an image of the prosthetic device via the graphical user interface. The method yet further includes calculating a first data set indicative of a first range of motion for the prosthetic device orientated in the first user selected orientation, and displaying a graphical representation of the first data set via the graphical user interface. An apparatus for analyzing a prosthetic device is also disclosed.

Method, apparatus, and program for analyzing a prosthetic device

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Columbia City, IN, United States of America

Paul Tomaszewski