Electricity: motive power systems – Battery-fed motor systems
Reexamination Certificate
2006-06-21
2009-12-29
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Battery-fed motor systems
C318S114000, C318S647000, C318S652000, C318S671000
Reexamination Certificate
active
07638958
ABSTRACT:
A powered surgical tool with a housing that contains a power generating unit such as a motor. A control module is disposed in a shell that is mounted in the housing. The control module contains a control circuit for regulating the actuation of the power generating unit. The power generating unit emits a signal representative of the operating state of the unit that is transmitted through the structural material forming the shell. Also internal to the control module shell is a sensor that monitors the signal emitted by the power generating unit. This signal output by the sensor is applied to the control circuit. The control circuit, based on the sensor signal regulates actuation of the power generating unit. Wherein the power generating unit is a motor, the signal emitted is the magnetic field that varies with rotor position. The sensor monitors the strength of this field.
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EPO, International Search Report and ISA Written Opinion for PCT App. No. PCT/US2006/024120, Jul. 2007.
Malackowski Don
Philipp Christopher
Dinh Thai
Ro Bentsu
Stryker Corporation
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