Pressure-responsive lockout valve and method of use

A - Human Necessities – 61 – F

Patent

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A61F 2/26 (2006.01) A61F 5/41 (2006.01)

Patent

CA 2261266

A lockout valve for an inflatable penile prosthesis which responds to internal fluid pressure. The lockout valve comprises a housing having inlet and outlet ports, an interior chamber, an apertured valve seat, and a poppet biased toward the closed position. The inlet communicates with the prosthesis reservoir, and the outlet communicates with the interior chamber and the prosthesis pump. The housing includes a flexible diaphragm which moves toward the poppet when flexed inwardly. Fluid pressure through the inlet port urges the poppet into sealing engagement against the valve seat, therefore closing the lockout valve. Negative fluid pressure applied to the interior chamber from the outlet port (when the pump is actuated) causes the diaphragm to flex inwardly and contact the poppet to open the valve. The lockout valve operates like a check valve when subject to reverse flow.

Clapet de verrouillage destiné à une prothèse pénienne gonflable, qui réagit à la pression d'un fluide interne. Le clapet comprend un logement comportant un orifice d'entrée et un orifice de sortie, une chambre interne, un siège de clapet perforé et un champignon sollicité vers la position fermée. L'orifice d'entrée communique avec le réservoir de la prothèse, et l'orifice de sortie communique avec la chambre interne et la pompe de la prothèse. Le logement comporte un diaphragme flexible qui se déplace vers le champignon quand il est soumis à une pression dirigée vers l'intérieur. La pression fluidique exercée au travers de l'orifice d'entrée pousse le champignon de façon à le bloquer hermétiquement contre le siège du clapet, ce qui ferme le clapet de verrouillage. Quand une pression fluidique négative est exercée sur la chambre interne depuis l'orifice de sortie (quand la pompe est actionnée), le diaphragme se courbe vers l'intérieur et entre en contact avec le champignon, ce qui ouvre le clapet. Celui-ci fonctionne comme un clapet anti-retour quand il est soumis à un flux inversé.

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