Title:
MONITORING SPEED CONTROL AND PRECISION INCREMENTING OF MOTOR FOR POWERED SURGICAL INSTRUMENTS
Document Type and Number:
WIPO Patent Application WO/2016/144681
Kind Code:
A3
Abstract:
Motor speed control systems are disclosed that include a motor having an output shaft, a motor speed control system, a sensor to detect the speed of the motor, and a controller to receive a signal from the sensor and to control the speed of the output shaft. A gear reduction assembly is operably coupled to the output shaft and a detectable element located in the gear reduction assembly. The sensor senses the detectable element. The sensor is placed in the radial path of the detectable element. Another system includes a brushless motor having a housing and an output shaft, the brushless motor comprising electromagnetic field coils arrayed radially around a central magnetic shaft, a gear reduction assembly operably coupled to the output shaft, and a sensor placed in proximity to the brushless motor. The sensor communicates with a controller to control the speed of the output shaft.
Inventors:
SHELTON IV FREDERICK E (US)
MORGAN JEROME R (US)
HARRIS JASON L (US)
MORGAN JEROME R (US)
HARRIS JASON L (US)
Application Number:
PCT/US2016/020619
Publication Date:
November 03, 2016
Filing Date:
March 03, 2016
Export Citation:
Assignee:
ETHICON ENDO SURGERY LLC (US)
International Classes:
A61B17/072; B25F5/00
Domestic Patent References:
| WO2008080148A2 | 2008-07-03 |
Foreign References:
| US5553675A | 1996-09-10 | |||
| US20110088921A1 | 2011-04-21 | |||
| US8956342B1 | 2015-02-17 | |||
| EP1943956A2 | 2008-07-16 | |||
| EP2364651A1 | 2011-09-14 |
Attorney, Agent or Firm:
PLANTZ, Bernard F. et al. (One Johnson & Johnson PlazaNew Brunswick, New Jersey, US)
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