05449370 is referenced by 419 patents and cites 15 patents.

A blunt tipped trocar which uses ultrasonic energy in the form of vibrations to assist a user in penetrating tissue. In one embodiment of the invention, a feedback mechanism is provided which senses a variation in load on the trocar tip and adjusts the ultrasonic energy level of the vibrating tip in accordance with the load condition. Another embodiment of the invention provides a trocar with a self-contained ultrasonic generator.

Title
Blunt tipped ultrasonic trocar
Application Number
8/60897
Publication Number
5449370
Application Date
May 12, 1993
Publication Date
September 12, 1995
Inventor
Jeffrey J Vaitekunas
West Chester
OH, US
Agent
Susan M Schmitt
Assignee
Ethicon
NJ, US
IPC
A61B 17/70
A61B 17/32
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