Ultrasonic knife

Details Ultrasonic knife Ultrasonic knife

1989-10-30

1990-12-04

Jaworski, Francis

Surgery

Truss

Perineal

604 22, A61H 2300

Patent

active

049745816

ABSTRACT:
A curved ultrasonic knife consisting of a transducer unit (5) and an amplitude-amplifying horn connected directly thereto, the knife being shaped to imbue the tip (43) of the horn with, to a great extent, purely longitudinal oscillation. The transducer unit includes a piezoelectric unit axially clamped in the transducer unit (5). A resonance rod (28) located between the piezoelectric unit and the horn (2) is bent to give a deflection of 16.degree., for example.

REFERENCES:
patent: 4169984 (1979-10-01), Parisi
patent: 4330278 (1982-05-01), Martin
patent: 4526571 (1985-07-01), Wuchinich
patent: 4535759 (1985-08-01), Polk et al.
patent: 4561438 (1985-12-01), Bonnet et al.
patent: 4634419 (1987-01-01), Kreizman et al.

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