Anesthetic container with metering elements
AssigneeDräger Medical AG & Co. KGaA
InventorsGötz Kullik, Jochim Koch
Life of this patent
Estimating the term…
Abstract
A reusable anesthetic container (1) has an anesthetic reserve space (2), which is provided with at least one movable wall element (3). The wall element (3) can be caused to follow the liquid anesthetic volume. In one embodiment, the movable wall element (3) is designed as a piston, which is caused to follow the anesthetic volume via a toothed piston rod (9). An elastomer ring is preferably provided on the storage container as a detent pawl for the piston rod (9). The anesthetic container (1) has a first metering element (5), which is actuated inductively by means of a complementary second metering element (6) cooperating with another metering element on the anesthesia apparatus (7) for metering the anesthetic.
Claims26
An anesthetic container comprising:
- a container structure defining an anesthetic reserve space with a metering opening and an open end;
- a liquid anesthetic disposed in said anesthetic reserve space;
- a movable wall element closing said open end such that said metering opening is the only fluid passage from inside of said reserve space to outside of said reserve space, said wall element being in contact with said liquid anesthetic and moving with said liquid anesthetic to follow a surface of said liquid anesthetic upon a change in a volume of said liquid anesthetic as liquid anesthetic is metered out of said reserve space;
- and
- a metering element for metering the liquid anesthetic out of said reserve space to outside of said reserve space through said metering opening.
An anesthetic container system comprising:
- a container part defining an anesthetic reserve space and having a metering opening and an open end;
- a liquid anesthetic in said anesthetic reserve space;
- a metering element connected to said container and disposed adjacent to or in said metering opening for regulating fluid flow through said metering opening from within said reserve space to outside of said reserve space;
- a movable wall element part closing said reserve space open end such that said metering opening is the only fluid passage from within said reserve space to outside of said reserve space, said wall element applying pressure on said liquid anesthetic and being in contact with a surface of said liquid anesthetic whereby said anesthetic reserve space is free of gas and only filled by said liquid anesthetic, said wall element being disposed in said container part moving with said surface of said liquid anesthetic as liquid anesthetic flows out of said reserve space through said metering opening.
Dependencies are inferred from the claim text.