Motor control and feedback in powered surgical devices
AssigneeCilag GmbH International
InventorsEric N. Johnson, Gregory A. Trees, Geoffrey S. Strobl
Life of this patent
Estimating the term…
Abstract
Surgical devices and methods are described herein that provide improved motor control and feedback, thereby combining advantages of manually-operated and powered surgical devices. In one embodiment, a surgical device includes a proximal handle portion that includes a motor, a distal end effector coupled to the handle portion, and a cutting element configured to cut tissue engaged by the end effector, wherein the motor is configured to supply power that moves the cutting element. The device also includes a motor control mechanism configured to cause the amount of the power to dynamically change in response to a manual user input when the cutting element is moving.
Claims18
A surgical device, comprising:
- an end effector configured to engage tissue;
- a motor configured to output power that causes at least one of a compression member and a cutting element to move along the end effector;
- an actuator configured to be manually actuated by a user to cause the at least one of the compression member and a cutting element to move along the end effector;
- and
- an electronic control circuit configured to cause the motor to dissipate current internally in response to a stop of the manual actuation of the actuator.
A surgical device, comprising:
- a proximal handle portion that includes a motor and a handle, the handle including a fluid-filled bladder configured to be manually held by a user;
- an elongate shaft extending distally from the handle portion;
- and
- an end effector at a distal end of the elongate shaft;
- wherein the fluid-filled bladder is configured to actuate the motor in response to a user input of pressure thereto, the fluid-filled bladder being configured to actuate the motor to move a cutting element configured to cut a tissue engaged by the end effector, an amount of the pressure being proportional to an amount of power that is supplied by the motor.
Dependencies are inferred from the claim text.