US 11,806,037 B2
Damping rings for an ultrasonic surgical instrument
Brian D. Black, Loveland, OH (US); Matthew T. Stone, Mason, OH (US); Andrew T. Beckman, Cincinnati, OH (US); and Charles J. Scheib, Loveland, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Oct. 22, 2020, as Appl. No. 17/077,152.
Prior Publication US 2022/0125461 A1, Apr. 28, 2022
Int. Cl. A61B 17/32 (2006.01); A61B 34/30 (2016.01)
CPC A61B 17/320068 (2013.01) [A61B 34/30 (2016.02); A61B 2017/320074 (2017.08); A61B 2017/320088 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An ultrasonic surgical instrument, comprising:
(a) an end effector including an ultrasonic blade;
(b) an ultrasonic transducer assembly; and
(c) a shaft assembly, including:
(i) a tube,
(ii) an acoustic waveguide received within the tube and acoustically connected between the ultrasonic blade and ultrasonic transducer assembly to communicate ultrasonic vibrations from the ultrasonic transducer assembly to the ultrasonic blade, wherein the acoustic waveguide extends along a longitudinal axis, and
(iii) a sheath radially positioned between the acoustic waveguide and the tube and including:
(A) a sheath body having an outer body surface, and
(B) a plurality of damping rings radially extending from the outer body surface and engaged with the tube,
wherein the plurality of damping rings are configured to acoustically isolate the acoustic waveguide from the tube.