Ultrasound handpiece

A - Human Necessities – 61 – F

Patent

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Details

A61F 9/007 (2006.01) A61B 17/00 (2006.01) A61B 17/32 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2410846

A handpiece having a set of longitudinally vibrating piezoelectric elements and an electric motor to provide rotational or oscillatory movement to the ultrasound horn. The ultrasound horn and the shaft of the motor are held within the handpiece shell by spring-loaded seals. The portions of the ultrasound horn and the motor shaft that rotate and longitudinally vibrate within the seals are hardened, such as by plating with titanium nitride or other hard coating. Such a hardening process increases the life of the handpiece.

L'invention concerne une pièce à main dotée d'une série d'éléments piézo-électriques vibrant dans le sens longitudinal et d'un moteur électrique servant à fournir un mouvement rotatif et oscillatoire à la corne à ultrasons. Cette dernière et l'arbre du moteur sont maintenus à l'intérieur de l'enveloppe de la pièce à main par des joints montés sur ressort. Les portions de ladite corne et de l'arbre du moteur qui peuvent tourner et vibrer dans le sens longitudinal à l'intérieur des joints sont durcies, par exemple par dépôt de nitrure de titane ou au moyen d'un autre revêtement dur. Un tel processus de durcissement accroît la durée de vie de la pièce à main.

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