Importance

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Abstract

A transmission for converting rotary motion to simultaneous reciprocating motion of a tool in two mutually transverse directions. A driver is selectively attached to one end of an input shaft and the opposite end of the input shaft terminates at an eccentric cam. An output shaft extends between a driven end and a working end. The driven end is apertured to rotatably receive the eccentric cam and the output shaft is slidably received in the diametrically extending bore of a spherical bearing member. Upon rotation of the input shaft, the working end of the output shaft is caused to reciprocate toward and away from the input shaft and, simultaneously, laterally relative to a longitudinal axis of the input shaft. The working end of the output shaft may be provided with appropriate cutting teeth to enable its use, for example, as a power broach for the precise removal of bone to enable proper implantation of a prosthetic device. In another embodiment, the working end may be movable in three mutually transverse directions.

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First Claim