Blade grounding mechanisms and alternative pin designs
AssigneeCilag GmbH International
InventorsSean P. Conlon, Ellen Burkart, Guion Y. Lucas
Life of this patent
Estimating the term…
Abstract
A surgical instrument includes a body, a shaft assembly, and an end effector. The end effector includes an ultrasonic blade and a clamp arm movably coupled with the shaft assembly. The shaft assembly extends between the body and the end effector and includes an acoustic waveguide, a rotational driver, and a driver wrench. The rotational driver is configured to be received within the rotational drive channel and rotate the shaft assembly relative to the body. The acoustic waveguide includes a notch and the driver wrench includes a key, wherein the first notch of the acoustic waveguide is configured to receive the key.
Claims20
A surgical instrument, comprising:
- (a) a body including a rotational drive channel;
- (b) an end effector including an ultrasonic blade;
- and
- (c) a shaft assembly extending between the body and the end effector along a longitudinal axis and configured to rotatably couple to the body, the shaft assembly including:
- (i) an acoustic waveguide extending from the ultrasonic blade and including a bore, and
- (ii) a guide pin positioned within the bore and configured to be received within the rotational drive channel, wherein the guide pin includes a base layer and a first insulating layer configured to insulate the base layer, wherein the base layer includes a deep annular groove, wherein the first insulating layer is positioned within the deep annular groove.
A surgical instrument, comprising:
- (a) a body including a rotational drive channel;
- (b) an end effector, including:
- (i) an ultrasonic blade, and
- (ii) a clamp arm movably coupled relative to the ultrasonic blade;
- and
- (c) a shaft assembly extending between the body and the end effector along a longitudinal axis and configured to rotatably couple to the body, the shaft assembly including:
- (i) an elongated tube,
- (ii) an acoustic waveguide positioned within the elongated tube and including a bore, and
- (iii) a guide pin positioned within the bore and configured to be received within the rotational drive channel, wherein the guide pin includes a base layer, a first insulating layer configured to insulate the base layer, and a second insulating layer configured to insulate the first insulating layer.
A surgical instrument, comprising:
- (a) a body including a rotational drive channel;
- (b) an end effector, including:
- (i) an ultrasonic blade, and
- (ii) a clamp arm movably coupled relative to the end effector;
- and
- (c) a shaft assembly extending between the body and the end effector defining a longitudinal axis and configured to rotatably couple to the body, the shaft assembly including:
- (i) an elongated tube,
- (ii) an acoustic waveguide positioned within the elongated tube and including a bore, and
- (iii) a guide pin having a base layer and positioned within the bore, wherein the guide pin is configured to be received within the rotational drive channel, wherein the base layer includes a shallow annular groove and a deep annular groove located within the shallow annular groove, wherein the deep annular groove intersects the longitudinal axis.
Dependencies are inferred from the claim text.