Steerable catheter with hydraulic or pneumatic actuator

A - Human Necessities – 61 – M

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Details

A61M 25/092 (2006.01)

Patent

CA 2573553

A hydraulically assisted actuator in a handle (e.g., 6) connects with a catheter having a deflectable distal ablation tip (e.g., 64). The hydraulic actuator translates small mechanical movement by a clinician into large travel movements of connected steering cables (e.g., 38, 40) and increased tension in the ablation tip for greater deflection. The hydraulic system further dampens the return of the ablation tip from a deflected position to an equilibrium position. The hydraulic actuation system is also incorporated into a set of foot pedals (e.g., 106, 108).

Selon l'invention, un dispositif d'actionnement assisté de manière hydraulique dans un manche (par exemple, 6) se rattache à un cathéter pourvu d'un embout d'ablation distal déviable (par exemple, 64). Ce dispositif d'actionnement permet de transposer un petit mouvement mécanique d'un clinicien en grands mouvements de parcours de fils de guidage raccordés (par exemple, 38, 40) et d'engendrer une tension accrue dans l'embout d'ablation en vue d'une plus grande déviation. Ce système hydraulique permet, également, d'amortir le retour de l'embout d'ablation d'une position déviée à une position d'équilibre. Ledit système d'actionnement hydraulique est aussi incorporé dans un ensemble de pédales (par exemple, 106, 108).

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