Suction pump
AssigneeMedela, Inc.
InventorsAndy Greter, Hansruedi Kuenzler, Brian H Silver
Life of this patent
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Abstract
The inventive suction pump is essentially comprised of three separate pump parts, namely of a drive unit located inside a main casing (1), of a collecting reservoir (8) and of a valve block (6), which is arranged directly between the casing (1) and reservoir, whereby these parts can be easily coupled to one another in a manner that enables them to be detached.
Claims4
Suction pump for medical applications, specifically pump for sucking off secretions, with a collecting reservoir for material to be sucked off, a valve block for a alternating connection of the pump chamber through corresponding valves for a production of a vacuum in latter or a blowing off circuit resp., depending from the direction of movement of the membrane pump plunger, and a driving unit of the membrane plunger, characterized in that collecting reservoir, valve block and driving unit are designed as separate pump parts which for the operation of the pump can be releasable coupled to each other, whereby the valve block comes to lie directly between collecting reservoir and driving unit and the membrane pump plunger located in the driving unit cooperates at its front end with a membrane which is arranged sealed against the inside of the driving unit, is however exposed towards the environment, and the pump chamber is located between valve block and driving unit and is defined by the wall of the valve block provided with the valves and a wall of the driving unit or membrane, resp.
Dependencies are inferred from the claim text.