08430898 is referenced by 217 patents and cites 286 patents.

A surgical instrument. The surgical instrument may comprise a transducer and an end effector. The transducer may be configured to provide vibrations along a longitudinal axis at a predetermined frequency and may comprise a piezoelectric stack positioned along the longitudinal axis. The transducer also may comprise a first metallic end mass positioned along the longitudinal axis adjacent a first end of the piezoelectric stack and a second metallic end mass positioned along the longitudinal axis adjacent a second end of the piezoelectric stack. The length of the transducer may be greater than or equal to of one wavelength and less than ½ of one wavelength. The end effector may be coupled to the transducer and may extend along the longitudinal axis. The length of the transducer and the end effector may be a multiple of ½ of one wavelength.

Title
Ultrasonic surgical instruments
Application Number
11/888171
Publication Number
8430898 (B2)
Application Date
July 31, 2007
Publication Date
April 30, 2013
Inventor
Karen K Isaacs
Burlington
KY, US
Michael J Stokes
Cincinnati
OH, US
Foster B Stulen
Mason
OH, US
Eitan T Wiener
Cincinnati
OH, US
Assignee
Ethicon Endo Surgery
OH, US
IPC
A61B 17/32
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