Patent ID: 11890030
Assignee: AURIS HEALTH, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 18:
19. A surgical instrument, comprising:
(a) a shaft assembly, comprising
(i) a drive chassis,
(ii) a proximal shaft portion extending along a first longitudinal axis,
(iii) an articulation assembly operatively coupled to the drive chassis, and
(iv) an ultrasonic waveguide, wherein the ultrasonic waveguide extends through the proximal shaft portion and at least a section of the articulation assembly;

(b) an end effector extending distally from the shaft assembly, wherein the articulation assembly is configured to deflect the end effector toward and away from the first longitudinal axis between a straight configuration and an articulated configuration, wherein the end effector comprises:
(i) an ultrasonic blade extending from the ultrasonic waveguide, wherein the ultrasonic blade defines a second longitudinal axis, and
(ii) a clamp arm configured to actuate relative to the ultrasonic blade between an open configuration and a closed configuration in order to grasp tissue; and

(c) a clamp arm driver including a circular rack and a proximal gear operatively coupled to the drive chassis, wherein the drive chassis is configured to translate the clamp arm driver via the circular rack to thereby actuate the clamp arm between the open and closed configurations while the end effector is in the articulated configuration, wherein the drive chassis is also configured to rotate the clamp arm driver via the proximal gear to rotate the clamp arm relative to the ultrasonic blade about the second longitudinal axis while the end effector is in the articulated configuration.