Patent ID: 9027562
Filing Date: 2015-05-12
Classification: A61M

Abstract:
1. A connector for connecting an oxygen input flow duct with two narrowed oxygen output flow ducts, thereby to meter oxygen flow to nasal cannula, comprising a) a hollow body having a relatively large flow input chamber sized for telescopic interfit with said input flow duct, said input chamber having an interior and having a diameter, b) the body having two relatively smaller flow output chambers sized for reception of and telescopic interfit with the respective output flow ducts, and located in direct and open alignment with the interior of said input chamber throughout the length thereof, said input chamber having substantially the same interior width throughout the length thereof, c) said two output chambers having direct and like-sized communication with said input chamber whereby input flow is equally divided into two output flow streams, d) the output flow ducts directly communicating with the entirety of the input flow duct proximate two intervening venturi passages defined by the connector, said input flow duct sealingly connected with said input chamber, and said output flow ducts sealingly connected with said two output chambers, said two venturi passages having overall width less than the diameter of said input chamber throughout the length thereof, e) said body having a wall extending about the interior of said input chamber, said wall having an internal surface that slightly tapers endwise directionally toward said output chambers to further define said interior width, for endwise progressively increasing sealing engagement with the input flow duct, said internal surface having said diameter that everywhere exceeds internal diameters defined by the flow output chambers, f) said output chambers have interior surfaces that taper endwise directionally toward said input chamber, for endwise progressively increasing sealing push-in engagement with the output flow ducts, g) and including nasal cannula in communication with said output flow ducts, h) there being a body first curved surface to guide flow from said flow input chamber into said venturi passages, and body second curved surfaces to guide flow from said venturi passages toward said output flow ducts.