Aspirators for medical purposes
OwnerDieter Beinsen, Otto Kribitzneckinventors
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Abstract
Vacuum aspirator for medical use of the kind which is required to be sterilized by steam and then evacuated so as to be ready for use. Object of the invention is to provide an aspirator which is suitable for repeated use and re-sterilization. The aspirator is provided with an outwardly-opening, non-return valve which may be in a closure plug of a flask of the aspirator or mounted at or inserted in the end of a suction connection remote from the flask of the aspirator.
Claims6
A vacuum aspirator for removing fluids from body cavities comprising a container for receipt of such fluids, a closure for closing said container, means supported by said closure for receiving and thereafter directing said fluids through said closure into said container, combined valve means operatively associated with said closure for sequentially admitting pressurized steam to interior portions of said container and thereafter evacuating the same, said valve means including a first one-way inwardly opening inlet valve portion normally biased in a closed position to admit steam above a predetermined relative pressure therepast and a second one-way outwardly opening outlet valve portion normally biased in a closed position to permit the passage of gas within said container outwardly thereof during evacuation of said container, said receiving means and said valve means operable to maintain said container under vacuum until use of said aspirator.
Dependencies are inferred from the claim text.