Spring-less check valve for a handpiece

A - Human Necessities – 61 – F

Patent

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Details

A61F 9/007 (2006.01)

Patent

CA 2736896

A hand piece for a surgical instrument is provided. The handpiece has an inlet (22), a chamber (with upstream and downstream portions), a flow control member, a pulse engine (26), and an outlet. The inlet communicates with the upstream portion (37) of the chamber. The downstream portion of the chamber communicates with the engine. The engine communicates with the outlet (24). In a closed position of the member, flow from the inlet moves the member to the open position thereby allowing flow through the flow path. In the open position, pulses from the engine move the member to the closed position before pulses from the pulse engine can flow through the flow path, thereby preventing flow through the flow path.

L'invention concerne une pièce à main pour instrument chirurgical. La pièce à main comporte une entrée (22), une chambre (comprenant des parties amont et aval), un organe de régulation du débit, un moteur (26) à impulsions et une sortie. Lentrée communique avec la partie amont (37) de la chambre. La partie aval de la chambre communique avec le moteur. Le moteur communique avec la sortie (24). Dans une position fermée de lorgane, lécoulement provenant de lentrée déplace lorgane vers la position ouverte, permettant ainsi lécoulement à travers le passage découlement. En position ouverte, des impulsions provenant du moteur déplacent lorgane vers la position fermée avant que les impulsions provenant du moteur à impulsions puissent se propager à travers le passage découlement, empêchant ainsi lécoulement à travers le passage découlement.

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