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US 10,456,133 B2Granted
Motorized surgical instrument
AssigneeEthicon, Inc.
InventorsDavid C. Yates, Thomas W. Huitema, Frederick E. Shelton, IV
Life of this patent
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Abstract
A surgical cutting and fastening instrument that is motorized. The instrument comprises in one embodiment a charge accumulator device, separate from a battery, that provides additional power to the motor under certain conditions. In addition, the motor may comprise multiple windings.
Claims10
A surgical instrument, comprising:
- an end effector comprising a firing element;
- a motor mechanically coupled to the firing element;
- a power source;
- and
- a control system electrically coupled to the motor and the power source, wherein the control system comprises:
- a sensing device configured to sense a position of the firing element;
- a control circuit electrically coupled to the sensing device;
- a switching device controlled by the control circuit;
- and
- a resistive element electrically connected in parallel with the switching device,
- and wherein the control system is configured to modulate power applied to the motor based on the following:
- the sensed position of the firing element;
- and
- a direction of travel of the firing element.
11 more elements
Dependencies are inferred from the claim text.