MOTORIZED SURGICAL INSTRUMENT

摘要

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.

主权项

1. A surgical instrument comprising:
an end effector comprising a moveable firing member; an electric motor for actuating the firing member; and a motor control circuit for controlling the motor, wherein the motor control circuit comprises:
a power source connected to the motor for electrically powering the motor;a charge accumulator device; anda switching circuit connected to the power source and the charge accumulator device, wherein the switching circuit comprises:
a first switch for temporarily connecting the charge accumulator device to the power source not in series to charge the charge accumulator device; anda second switch for selectively connecting the charge accumulator device in series with the power source to provide additional power to the motor, wherein, when the first switch is temporarily connecting the charge accumulator device to the power source, the second switch is not selectively connecting the charge accumulator device in series with the power source.