Improved ultrasonic knife

Details Improved ultrasonic knife Improved ultrasonic knife

1992-02-20

1993-11-16

Rosenbaum, C. Fred

Surgery

Instruments

Cutting, puncturing or piercing

606169, 30355, A61B 1732

Patent

active

052619222

ABSTRACT:
Disclosed is an improved ultrasonic knife of the type for surgical incision in various types of tissue and/or for the removal of cement within the body. The knife has a reduced thermal footprint to minimize thermally induced tissue damage. Tooth configuration on the knife cooperates with the stroke of the ultrasonic drive to produce efficient cutting, as well as tactile feedback to the surgeon with respect to the rate of cutting, and changes in tissue density. Ultrasonic knife tip extenders are also disclosed for advancing the ultrasonic knife tip through the working channel of an endoscope. Methods utilizing the foregoing apparatus are also disclosed.

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