A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/00 (2006.01) A61M 1/02 (2006.01)
Patent
CA 2361648
The present invention provides for a dual port arrangement for a water seal chamber of a drainage device for channeling, and restricting fluid flow through the water seal during normal operation of the device when the patient is breathing normally, while preventing the breach of the water seal during reverse flow conditions when the patient takes a sudden, and deep inhalation. The dual port arrangement comprises a narrow side port and an elongated tunnel port interposed between, and in communication with, both arms of the water seal chamber. The side port has a thin slot configuration that restricts fluid flow communication through the side port, and the back tunnel port defines a low profile, elongated conduit with openings that channel fluid flow between both arms of the water seal chamber. The elongated configuration of the conduit also prevents a steep water gradient from falling below the upper portion of the conduit opening during reverse flow conditions, and breach the water seal.
La présente invention concerne un dispositif à deux orifices pour chambre à joint hydraulique (17) d'un dispositif de drainage (10) servant à canaliser et limiter le débit de fluide par le joint hydraulique (22) pendant le fonctionnement normal de l'appareil (10) lorsque le patient respire normalement, tout en empêchant la rupture du joint hydraulique (22) pendant les phases de flux inversé, notamment lorsque le patient fait soudainement une profonde inspiration. Le dispositif à deux orifices comporte un orifice latéral étroit et un orifice tunnel allongé communicant avec les deux branches (20, 21) de la chambre à joint hydraulique entre lesquelles il est monté. La configuration en fente fine de l'orifice latéral présente limite la communication d'écoulement fluidique par l'orifice latéral. L'orifice postérieur du tunnel définit un conduit allongé en profile bas dont les ouvertures canalisent le flux de fluide entre les deux branches de la chambre à joint hydraulique. Cette configuration allongée du conduit empêche qu'un gradient rapide de l'eau ne retombe en dessous de la partie supérieure de l'ouverture du conduit pendant les phases de flux inversé et ne rompe le joint hydraulique.
Ranford Alan
Yam Jacky
Covidien Ag
Sherwood Services Ag
Smart & Biggar
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