Method and apparatus for ultrasonic surgical cutting and hemosta

Details Method and apparatus for ultrasonic surgical cutting and hemosta Method and apparatus for ultrasonic surgical cutting and hemosta

1990-03-12

1991-06-25

Pellegrino, Stephen C.

Surgery

Instruments

Cutting, puncturing or piercing

606171, 310316, 604 22, 128 24AA, A61B 1732

Patent

active

050263870

ABSTRACT:
A power control arrangement for an ultrasonic surgical device such as a scalpel which provides power on demand in response to the continuous or periodic sensing of the loading condition (tissue contact or withdrawal) of the blade such that the device goes from a low power, idle state to a selectable high power, cutting state automatically depending on whether the scalpel is or is not in contact with tissue. A third, high power coagulation mode is manually selectable with automatic return to an idle power level when the blade is not in contact with tissue.

REFERENCES:
patent: 3489930 (1970-01-01), Shoh
patent: 3526792 (1970-09-01), Shoh
patent: 4156157 (1979-05-01), Mabille
patent: 4227110 (1980-10-01), Douglas et al.
patent: 4371816 (1983-02-01), Wieser

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