Motor-driven surgical cutting instrument with electric actuator directional control assembly
First Claim
1. A surgical instrument, comprising:
- an end effector comprising a moveable component;
an electric motor for powering the end effector;
a motor control circuit connected to the motor for controlling the motor, wherein the motor control circuit comprises a plurality of switches, wherein the plurality of switches comprises a first switch with a moveable actuator;
a pinion that is rotated by rotation of the electric motor;
a rack that is driven by the pinion upon rotation by the electric motor, wherein the rack moves longitudinally when driven by the pinion upon rotation by the electric motor, wherein the rack causes movement of the moveable component in the end effector when driven by the pinion upon rotation by the electric motor; and
a slider that moves in a same direction as the rack and actuates the moveable actuator of the first switch when the rack engages the slider to move the slider from a first slider position to a second slider position relative to the first switch,wherein the slider remains in the second slider position relative to the first switch until the rack engages the slider to move the slider from the second slider position to the first slider position.
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Accused Products
Abstract
A motor-driven surgical instrument having a control assembly for controlling a switch of the instrument. The surgical instrument may comprise a motor control circuit, a drive member, and a slider. The drive member comprises a first shoulder at a first position and a second shoulder at a second position. A first portion of the slider interfaces the drive member such that the slider is moveable in a direction of movement of the drive member when either the first shoulder or the second shoulder of the drive member engages the first portion of the slider. A second portion of the slider actuates a switch of the motor control circuit when the drive member moves the slider to a first position relative to the first switch. In various embodiments, the switches of the control circuit are not embodied as a part of an IC.
2626 Citations
17 Claims
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1. A surgical instrument, comprising:
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an end effector comprising a moveable component; an electric motor for powering the end effector; a motor control circuit connected to the motor for controlling the motor, wherein the motor control circuit comprises a plurality of switches, wherein the plurality of switches comprises a first switch with a moveable actuator; a pinion that is rotated by rotation of the electric motor; a rack that is driven by the pinion upon rotation by the electric motor, wherein the rack moves longitudinally when driven by the pinion upon rotation by the electric motor, wherein the rack causes movement of the moveable component in the end effector when driven by the pinion upon rotation by the electric motor; and a slider that moves in a same direction as the rack and actuates the moveable actuator of the first switch when the rack engages the slider to move the slider from a first slider position to a second slider position relative to the first switch, wherein the slider remains in the second slider position relative to the first switch until the rack engages the slider to move the slider from the second slider position to the first slider position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification