Search International and National Patent Collections

1. (WO2018013629) ULTRASONIC SURGICAL INSTRUMENT WITH PIEZOELECTRIC CENTRAL LUMEN TRANSDUCER

Pub. No.:    WO/2018/013629    International Application No.:    PCT/US2017/041626
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Thu Jul 13 01:59:59 CEST 2017
IPC: A61B 17/32
B06B 1/06
A61B 17/22
A61B 17/00
Applicants: ETHICON LLC
Inventors: RHEE, Sora
GEE, Jacob S.
SMOLIK, Steven P.
BALEK, Stephen J.
DANNAHER, William D.
STULEN, Foster B.
Title: ULTRASONIC SURGICAL INSTRUMENT WITH PIEZOELECTRIC CENTRAL LUMEN TRANSDUCER
Abstract:
A surgical instrument includes a transducer assembly (2500) with a housing (2502) having a conduit section (2510) and a base portion (2520). A fluid passageway (2515) is defined through the conduit and base portion (2520), an ultrasonic transducer (2504) including a plurality of piezoelectric elements (2508A-D) and a plurality of electrodes (2509A-D) are arranged in a stack (2504) configuration, where an electrode is located between each pair of piezoelectric elements. A first borehole (2527) is defined through the ultrasonic transducer (2504) and an end mass (2506) having a second borehole (2527) defined therethrough. A surface (2330) of the end mass (2506) is positioned adjacent a first end of the ultrasonic transducer (2504), the end mass (2506) is configured to engage with the housing (2502), and the conduit section (2510) of the housing (2502) is configured to pass through the second borehole (2527) of the end mass (2506). The end mass (2506) is configured to compress the ultrasonic transducer (2504) against a surface (2330) of the housing (2502) when the end mass (2506) is engaged with the housing (2502).