Ultrasonic probe device with rapid attachment and detachment...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/22 (2006.01) A61B 17/00 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2462728

An ultrasonic medical device comprising an ultrasonic probe (25) and a collet assembly for probe attachment and detachment, and a method of removing occlusions in blood vessels using the ultrasonic medical device. The probe (25) detachability allows insertion, manipulation and withdrawal independently of a device body. The collet assembly (5) comprises a compression clamp (10) capable of releasably receiving the probe (25), and a compression housing (14) that initiates a minimal area "line-contact" between the collet assembly segments upon engagement. A line-contact lip (21) ensures consistent and repeatable contact between the compression clamp (10) and the compression housing (14) at a pre-determined location to provide a consistent closing force on the probe (25) for any selected tightening torque. The line- contact between the collet assembly segments provides efficient ultrasonic energy transfer from an ultrasonic energy source (30) to the probe (25) thereby increasing probe efficiency during tissue ablation.

L'invention concerne un dispositif médical ultrasonique comprenant une sonde ultrasonique (25) et un ensemble de pince destiné à la fixation et au décollement de la sonde. Cette invention a également trait à une méthode d'élimination des occlusions dans des vaisseaux sanguins, au moyen dudit dispositif médical ultrasonique. Le caractère détachable de la sonde (25) permet son insertion, sa manipulation et son retrait indépendamment d'un corps du dispositif. Cet ensemble de pince (5) comprend un collier de compression (10) capable de recevoir, de manière libérable, la sonde (25), et un boîtier de compression (14) qui enclenche un </= contact en ligne >/= de zone minimale entre les segments de l'ensemble de pince, suite à la mise en contact. Une lèvre de contact en ligne (21) garantit un contact reproductible et conséquent entre le collier de compression (10) et le boîtier de compression (14) à un emplacement prédéterminé, de manière à produire une force de fermeture importante sur la sonde (25) pour tout couple de serrage sélectionné. Le contact en ligne entre les segments de l'ensemble de pince engendre un transfert d'énergie ultrasonique efficace d'une source d'énergie ultrasonique (30) à la sonde (25), ce qui permet d'accroître l'efficacité de la sonde, au cours d'une ablation tissulaire.

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