Syringe and accessory
OwnerJohn K. Barnwellinventor
Life of this patent
Estimating the term…
Abstract
A syringe has a chamber isolated from an open ended barrel. A valve provides fluid communication between the chamber and barrel and an outlet. In an alternative form the chamber is within a structurally independent cell that may be mounted to a conventional syringe in piggyback fashion.
Claims10
A syringe comprising a tubular housing having a barrel open at one end in which a plunger is slidably positioned and a storage chamber separated from said barrel by a partition;
- a conduit extending through said partition and said storage chamber to a needle mount orifice and having an outlet opening into said chamber;
- and three-way valve means associated with said conduit for alternatively providing fluid communication through said conduit between said needle mount orifice and said storage chamber for loading said storage chamber with a medication, for fluid communication between said storage chamber and said barrel for drawing medication from said chamber into said barrel upon actuation of said plunger, and for providing fluid communication between said barrel and said needle mount orifice for medication ejection.
Apparatus for separately storing, mixing and ejecting a medication comprising:
- a syringe having a tubular coupling at one end and plunger means operatively extending out of the other end;
- and
- a cell having a chamber adapted to house a medication, a tubular coupling adapted to be coupled with said syringe coupling, another tubular coupling adapted to be coupled with a needle, a conduit mounted within said chamber extending between said cell couplings and having an opening into said chamber, and valve means for selectively controlling the flow of medication between said cell couplings and said opening.
Apparatus for storing and supplying medication to a syringe when mounted thereto and with said apparatus comprising a cell having a conduit extending therethrough between two externally accessible tubular couplings and having an orifice opening into the cell interior, and valve means for controlling the flow of medication through said conduit, whereby the cell may be filled with medication with the valve means establishing communication between one of the couplings and the orifice through the conduit, the cell contents drawn into the syringe with the valve means etablishing communication between the orifice and the coupling to which the syringe is coupled, and medication expelled to ambiance through the cell conduit with the valve means establishing communication between the two cell couplings.
Dependencies are inferred from the claim text.