Stryker Corporation

Krishnamurthy Belagali

David Hershberger

William L Hassler, Jr

Michael Irvine

William L Hassler

James B Wiebe Iii

A battery and control module to which a powered surgical tool is releasably attached. Internal to the module there is: a cell for energizing the tool; a sensor for monitoring an operational state of the tool; a sensor for monitoring a trigger external to the module; and a control circuit. Based on the signals output by the sensors, the control circuit selectively applies energization signals from the cell to the power generating unit internal to the surgical tool. In some versions of the invention, the trigger is attached to the module.

Surgical tool system with a tool unit that includes a power generating unit and a battery and control module that is releasably attached to the tool unit for energizing and controlling the power generating unit

A surgical handpiece with a rotating spindle for receiving the coupling head of a surgical attachment or a cutting accessory. A gear train has plural drive heads that simultaneously rotate at different speeds. A clutch assembly has pins that move along the length of the spindle. The clutch assembly sets the position of the pins so they will engage one of the drive heads. The spindle rotates with the drive head with which the clutch pins are engaged.

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Portage, MI, United States of America

Krishnamurthy Belagali