Publication

Instrument chirurgical ultrasonique : Etude d'une solution

2005
Student Projects

Abstract

Afin de concevoir et développer un ensemble d’instruments chirurgicaux ultrasoniques permettant de découper ou enlever du tissu humain, du cartilage, des os et surtout, des disques intervertébraux, plusieurs méthodes de transmission et amplification du mouvement ont été envisagées et retenues. Le but du projet est d’étudier un système composé d’un « arbre résonant » (transmission), d’un « levier intégré » (amplification) et d’un élément piézoélectrique (source du mouvement).

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2005
Student Projects

Abstract

Official source

Related concepts (7)

Automatic transmission

An automatic transmission (sometimes abbreviated AT) is a multi-speed transmission used in motor vehicles that does not require any input from the driver to change forward gears under normal driving conditions. The most common type of automatic transmission is the hydraulic automatic, which uses a planetary gearset, hydraulic controls, and a torque converter. Other types of automatic transmissions include continuously variable transmissions (CVT), automated manual transmissions (AMT), and dual-clutch transmissions (DCT).

Transmission (mechanical device)

A transmission (also called a gearbox) is a mechanical device which uses gears to change the speed or direction of rotation in a machine. Many transmissions have multiple gear ratios, but there are also transmissions that use a single fixed gear ratio. Most currently-produced passenger cars with petrol or diesel engines use transmissions with 5-8 forward gear ratios and one reverse gear ratio. Electric vehicles typically use a single-speed or two-speed transmission.

Continuously variable transmission

A continuously variable transmission (CVT) is an automatic transmission that can change through a continuous range of gear ratios. This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant RPM while the vehicle moves at varying speeds. CVTs are used in cars, tractors, side-by-sides, motor scooters, snowmobiles, bicycles, and earthmoving equipment.

Related publications (1)

Instrument chirurgical ultrasonique : Etude d'une solution

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