Flow regulation and control device for the cerebrospinal...

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/00 (2006.01) A61M 27/00 (2006.01) A61M 39/22 (2006.01) G05D 16/06 (2006.01) G05D 16/20 (2006.01)

Patent

CA 2154700

Device for regulating and controlling the flow of cerebrospinal fluid in a drainage circuit in subjects suffering from hydrocephalus, comprising a valve to be implanted subcutaneously, between an upstream conduit (3) from one of the ventricles of the subject's cranial cavity and a downstream conduit (5) which discharges the liquid into one of the subject's appropriate organs, the valve consisting of a valve body (1) linking the upstream conduit and the downstream conduit, a valve closure (14) to shut down the flow between the two conduits and control means (7, 15) connected to the said closure (14) to move it from a closed to an open position, characterized by the fact that the control means comprise an initial chamber (12) in the body (1) that is closed imperviously by a mobile wall (7), a second chamber (6) in the body, separated from the first by the mobile wall (7) and where the part (2) of the connecting passage upstream from the valve closure terminates, means for coupling the mobile wall (7) to the closure (14) and a valve closure return spring (17).

Dispositif de régulation et de contrôle de l'écoulement du liquide céphalo-rachidien dans un circuit de drainage chez un sujet atteint d'hydrocéphalie, comprennant une valve à transplantation sous cutanée, intercalée entre un conduit (3) amont issu de l'un des ventricules de la boîte crânienne du sujet et un conduit aval (5) de décharge du liquide dans un organe approprié du sujet, la valve comprennant un corps (1) délimitant un passage de liaison du conduit amont et du conduit aval, un clapet (14) de fermeture de ce passage de liaison et des moyens de commande (7, 15) accouplés à ce clapet (14) pour le déplacer entre une première position de fermeture du passage et une seconde position d'ouverture de ce passage, caractérisé en ce que les moyens de commande comprennant une prermière chambre (12) ménagée dans le corps (1) et fermée de manière étanche par une paroi mobile (7), une seconde chambre (6), ménagée dans le corps, séparée de la première par la paroi mobile (7), et dans laquelle débouche la partie (2) du passage de liaison situé en amont du clapet, des moyens d'attelage de la paroi mobile (7) au clapet (14) et un ressort (17) de rappel du clapet.

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