ULTRASONIC SURGICAL APPARATUS

An electrical apparatus for driving an ultrasonic piezoelectric crystal transducer in a surgical handpiece for the fragmentation and aspiration of tissue, which apparatus includes an electronic control loop (12) in combination with a voltage source amplifier (2) having an output which is connected t...

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Bibliographic Details
Main Author ROSE, EMERY, S
Format Patent
LanguageEnglish
Published 19.08.1993
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
DIAGNOSIS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
FOR PERFORMING MECHANICAL WORK IN GENERAL
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PERFORMING OPERATIONS
PROSTHESES
SURGERY
TRANSPORTING
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:An electrical apparatus for driving an ultrasonic piezoelectric crystal transducer in a surgical handpiece for the fragmentation and aspiration of tissue, which apparatus includes an electronic control loop (12) in combination with a voltage source amplifier (2) having an output which is connected to the piezoelectric crystal transducer (3) with a tuning inductor (4) in parallel. A control system for monitoring the control loop (12) and a component for controlling tissue selectivity are also disclosed. Appareil électrique destiné à commander un transducteur à quartz piézoélectrique ultrasonique situé dans un instrument chirurgical servant à fragmenter et à aspirer des tissus. Ledit appareil comporte une boucle d'avertissement électronique (12) en combinaison avec un amplificateur de source de tension (2) ayant une sortie qui est connectée au transducteur à quartz piézoélectrique (3) avec un inducteur d'accord (a) en parallèle. Un système de commande destiné à surveiller la boucle d'asservissement (12) et un composant destiné à commander la sélection des tissus sont également décrits.
Bibliography:Application Number: WO1992US09322