Water-jet device for separating a biological structure

Details Water-jet device for separating a biological structure Water-jet device for separating a biological structure

A - Human Necessities

61

B

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

Patent

CA 2529853

The invention relates to a water-jet device. The aim of the invention is to improve the adaptation of one such water-jet device to different applications. To this end, the piston cylinder unit (2) is connected to the eccentric drive device (20) in a separable manner and is embodied as an application-specific set with the suction line (4), the pressure line (7), and the operating handpiece (3). According to the invention, the piston cylinder unit (2) is especially provided with an annular fixing region (25) in which the sealing element of the piston (17) plunges and loses tension in the drawn-out end position of the piston (17), and the membrane (26) has sufficient free space to move.

L'invention vise à mettre en oeuvre un dispositif à jet d'eau présentant une meilleure faculté d'adaptation à diverses situations d'utilisation. A cet effet, l'unité piston-cylindre (2) est reliée de façon amovible au dispositif d'entraînement excentrique (20), et l'unité piston-cylindre (2) est conçue avec la conduite d'aspiration (4), la conduite de pression (7) et la pièce à main d'utilisation (3), en tant qu'ensemble d'application spécifique à l'utilisation. Par ailleurs, ladite unité piston-cylindre (2) comporte de façon particulière un espace annulaire de repos (25) dans lequel le joint du piston (17) est d'une part immergé et détendu dans la position d'extension terminale du piston, et la membrane (26) bénéficie d'autre part d'une liberté de mouvement suffisante.

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