US 11,744,607 B2
Ultrasonic surgical instrument with blade replacement features
John A. Hibner, Mason, OH (US); Richard C. Smith, Milford, OH (US); Catherine A. Corbett, Cincinnati, OH (US); Craig N. Faller, Batavia, OH (US); and David A. Witt, Maineville, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Dec. 21, 2020, as Appl. No. 17/128,523.
Application 16/174,320 is a division of application No. 14/976,127, filed on Dec. 21, 2015, granted, now 10,231,749, issued on Mar. 19, 2019.
Application 17/128,523 is a continuation of application No. 16/174,320, filed on Oct. 30, 2018, granted, now 10,973,542.
Prior Publication US 2021/0137553 A1, May 13, 2021
Int. Cl. A61B 17/32 (2006.01); A61N 7/02 (2006.01); A61B 17/00 (2006.01); A61B 17/29 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01); A61N 7/00 (2006.01)
CPC A61B 17/320092 (2013.01) [A61N 7/02 (2013.01); A61B 2017/0042 (2013.01); A61B 2017/00389 (2013.01); A61B 2017/00455 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/2926 (2013.01); A61B 2017/2931 (2013.01); A61B 2017/2947 (2013.01); A61B 2017/320093 (2017.08); A61B 2017/320094 (2017.08); A61B 2018/0063 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00619 (2013.01); A61B 2090/0808 (2016.02); A61B 2090/0811 (2016.02); A61B 2090/0813 (2016.02); A61N 2007/0056 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surgical instrument, comprising:
(a) an end effector including an ultrasonic blade; and
(b) a shaft assembly defining a longitudinal axis and having the ultrasonic blade distally projecting therefrom, wherein the shaft assembly includes:
a first tube,
(ii) an acoustic waveguide extending through the first tube, wherein the acoustic waveguide is unitarily attached to the ultrasonic blade and configured to be removed from the first tube, and
(iii) a lock configured to releasably secure the acoustic waveguide relative to the first tube longitudinally along the longitudinal axis and angularly about the longitudinal axis,
wherein the lock includes a key lock configured to selectively move from a locked position toward an unlocked position, wherein the key lock in the locked position is configured to releasably secure the first tube relative to the acoustic waveguide, and wherein the key lock in the unlocked position is configured to release the first tube relative to the acoustic waveguide such that the acoustic waveguide is configured to be longitudinally removed from the first tube,
wherein the key lock is resiliently biased toward at least one of the locked or unlocked positions.