Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1995-04-11
1997-02-11
Ro, Bentsu
Electricity: motive power systems
Switched reluctance motor commutation control
128755, H02P 620, H02P 624, A61B 1732
Patent
active
056024495
ABSTRACT:
A surgical system, adapted to operate with at least one surgical device, has a handpiece containing a motor which is adapted to receive the surgical device. The surgical device is driven through a continuum of positions by the motor output shaft. A controller microprocessor controls the operation of the system. The motor has sensors for generating electrical position signals and the controller is responsive to input signals for defining both a stop position and a reversal position for the surgical device. As a result, the controller initiates operation of the surgical device at the so called stop position and stops operation of the surgical device so that it comes to rest substantially at the stop position. In an oscillatory mode of operation, the controller also forces reversals to occur solely at a reversal position dictated by the system, under the control of the user. In connection with an arthroscopic cutting device, the control enables the surgeon to control, for example, the opening of the aperture through which tissue and fluids are removed from the surgical site during the reversal and start/stop conditions.
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Krause Kenneth W.
Sjostrom Douglas D.
Ro Bentsu
Smith & Nephew Endoscopy Inc.
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