US 12,446,913 B2
Ultrasonic surgical instrument with piezoelectric central lumen transducer
Sora Rhee, Spring Mills, PA (US); Jacob S. Gee, Cincinnati, OH (US); Steven P. Smolik, West Chester, OH (US); Stephen J. Balek, Springboro, OH (US); and William D. Dannaher, Cincinnati, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Dec. 1, 2023, as Appl. No. 18/526,230.
Application 17/215,234 is a division of application No. 16/170,788, filed on Oct. 25, 2018, granted, now 10,966,744, issued on Apr. 6, 2021.
Application 16/170,788 is a division of application No. 15/626,768, filed on Jun. 19, 2017, granted, now 10,245,064, issued on Apr. 2, 2019.
Application 18/526,230 is a continuation of application No. 17/215,234, filed on Mar. 29, 2021, granted, now 11,883,055.
Claims priority of provisional application 62/381,785, filed on Aug. 31, 2016.
Claims priority of provisional application 62/361,136, filed on Jul. 12, 2016.
Prior Publication US 2024/0164802 A1, May 23, 2024
Int. Cl. B06B 1/06 (2006.01); A61B 17/32 (2006.01); B06B 3/00 (2006.01); A61B 17/00 (2006.01); A61B 17/22 (2006.01)
CPC A61B 17/320068 (2013.01) [A61B 17/320092 (2013.01); B06B 1/0611 (2013.01); B06B 3/00 (2013.01); A61B 2017/00084 (2013.01); A61B 2017/0011 (2013.01); A61B 2017/00402 (2013.01); A61B 2017/00504 (2013.01); A61B 2017/22027 (2013.01); A61B 2017/320071 (2017.08); A61B 2017/320084 (2013.01); A61B 2017/320094 (2017.08); B06B 1/0614 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A transducer assembly comprising:
a housing comprising a conduit section and a base portion;
a conductive element at least partially surrounding the conduit section of the housing;
an ultrasonic transducer comprising a plurality of piezoelectric elements and a plurality of electrodes arranged in a stack configuration, wherein the ultrasonic transducer comprises an even multiple of the plurality of piezoelectric elements;
a first borehole defined through the ultrasonic transducer;
an end mass comprising an interior surface, a wall, and a second borehole, wherein the second borehole is defined therethrough, and wherein the end mass to engage with the housing; and
wherein:
the conduit section of the housing to pass through the first borehole of the ultrasonic transducer and the second borehole of the end mass,
the end mass to compress the ultrasonic transducer against the base portion of the housing, and
the plurality of piezoelectric elements are electrically connected in parallel.