METHOD AND APPARATUS FOR A VALVE AND IRRIGATOR

摘要

A valve and irrigator 10 used with a suction tube 11 has an elongate funnel 12 with an axis through an enlarged entrance 15 and an opposed extended exit duct 16 of a flexible elastomer. A flow passage 17 through the elongate funnel 12 connects the entrance to the exit permitting fluid communication. A web 19 across and near the enlarged entrance 15 sealingly separates that from the exit. The web 19 and the elongate funnel 12 are made of silicone elastomer and are adhesively adhered to together. A portal 20 in the web 19 passes therethrough along the axis and is circular in shape to surround in fluid tight engagement the suction tube 11. A lid 28, proximally of the web 19 on the enlarged entrance 15, has an inlet 29 for irrigation and a pass through 30 for the tube; the lid 28 closes the enlarged entrance 15 forming a chamber 31 between the web 19 and the lid 28. A slit 23 within the web 19, near the portal 20 and spaced from the axis is in the form of a closed mouth 24 composed of a pair of sealing lips. Normally the pair of lips 25 are together but are able to separate and define a passageway 26 for fluid flow through the web 19. A peripheral bump 27 is radially disposed relative to the slit 23 and is located on the entrance in position to align flexure force therethrough and toward the axis. A method of using the valve and irrigator 10 with the suction tube 11 has steps including locating an elongate funnel 12 along the axis with the entrance thereon. Positioning the exit on the elongate funnel 12 opposite the entrance and along the axis is a step. Merging the exit with the entrance is step. A step is permitting fluid communication through the flow passage 17 between the entrance and exit. Sealingly separating the entrance and exit with the web 19 is a step. The step of passing the portal 20 through the web 19 along the axis so it surrounds tube therethrough. A method for making the valve and irrigator 10 has steps of locating the web 19 near the entrance, passing through the web 19 the portal 20 and slit 23.