EP0091312A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus and method for mixing separately stored components
Assignee: Baxter International Inc
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Filing: 1983-04-05
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Granted: —
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Expires: 2003-04-05
Abstract
Abstract Apparatus for selectively mixing two components such as a powder and a liquid in a quick and efficient manner. The apparatus Includes a compressible chamber (22) with a liquid component (74) therein, the compressible chamber including gas-trapping and reservoir compartments (32, 30) In open communication. Included is means (44) to access the gas-trapping compartment such that the chamber may be connected to a container (80) having a mixing component such as a powder therein so as to form a selectively opened pathway between the container (80) and the compressible chamber (22) of the apparatus. The apparatus may include the container (80). After the pathway is opened, the gas-trapping and reservoir compartments (32, 30) are selectively positioned to facilitate proper mixing of the liquid component in the chamber with the component (82) in the container. Also disclosed is a method for separately storing and selectively mixing two components (74, 82) in the apparatus including the container (80), the method including the steps of pathway opening, liquid transfer, liquid exchange and liquid emptying from the container into the chamber.
Inventors
- 👤 Steffen A. Lyons
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:02
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2089; A61J1/05; A61J1/10; A61J1/2003; A61J1/2006; A61J1/201; A61J1/2017; A61J1/2068; A61J1/2072; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
Apparatus for separately storing and selectively mixing two components, comprising: a compressible chamber containing a liquid first component and including a selectively gas-trapping compartment, a reservoir compartment and an open flow path between said gas-trapping and reservoir compartments; a container containing a second component such as a liquid or a particulate solid, at least one of said container and said compressible chamber also containing a gas; and an openable pathway between said container and said gas-trapping compartment of said compressible chamber; whereupon after the pathway is opened, the gas-trapping and reservoir compartments may be selectively positioned relative to each other to facilitate proper mixing of the first and second mixing components.
Claim 2
Dependent Claim
111 words
Apparatus for separately storing and selectively mixing two components, comprising: a compressible chamber containing a liquid first component and including a selectively gas-trapping compartment, a reservoir compartment and an open flow path between said gas-trapping and reservoir compartments; a container containing a second component such as a liquid or a particulate solid, at least one of said container and said compressible chamber also containing a gas; and an openable pathway between said container and said gas-trapping compartment of said compressible chamber; whereupon after the pathway is opened, the gas-trapping and reservoir compartments may be selectively positioned relative to each other to facilitate proper mixing of the first and second mixing components.
Claim 3
Dependent Claim
118 words
Apparatus for mixing a liquid first component stored therein with a second component stored in a container, comprising: a compressible chamber containing said liquid first component and a gas and including a selectively gas-trapping compartment, a reservoir compartment, and an open flow path between said gas-trapping and reservoir compartments; and means to access said gas-trapping compartment of said compressible chamber such that said compressible chamber access means may be connected to the container to form a selectively opened pathway between the container and said compressible chamber; whereupon after said pathway is opened, said gas-trapping and reservoir compartments may be selectively positioned relative to each other to facilitate the proper mixing of said first component and the second component.
Claim 4
Dependent Claim
118 words
Apparatus for mixing a liquid first component stored therein with a second component stored in a container, comprising: a compressible chamber containing said liquid first component and a gas and including a selectively gas-trapping compartment, a reservoir compartment, and an open flow path between said gas-trapping and reservoir compartments; and means to access said gas-trapping compartment of said compressible chamber such that said compressible chamber access means may be connected to the container to form a selectively opened pathway between the container and said compressible chamber; whereupon after said pathway is opened, said gas-trapping and reservoir compartments may be selectively positioned relative to each other to facilitate the proper mixing of said first component and the second component.
Claim 5
Independent Claim
101 words
The apparatus as in Claims 1 or 2, further including an internal wall in said compressible chamber, said internal wall having a closed end and an open end, defining said gas-trapping and reservoir compartments, segregating said gas-trapping and reservoir compartments along the length of said internal wall and at said closed end, and defining said open flow path between said gas-trapping and reservoir compartments, whereupon after opening said pathway said internal wall enables selective entrapment of at least a portion of said gas in said gas-trapping compartment adjacent said open pathway, upon the selective movement of said gas-trapping and reservoir compartments.
Claim 6
Dependent Claim
28 words
The apparatus as in Claim 3, wherein said compressible chamber is defined by two flexible plastics sheets sealed together to form an external seal about said compressible chamber.
Claim 7
Dependent Claim
92 words
The apparatus as in Claim 4, wherein said external seal of said flexible, plastics sheets and said internal wall together define a generally "J" configuration for said compressible chamber, said reservoir compartment corresponding to the long leg of the "J" configuration, said gas-trapping compartment corresponding to the short leg of the " J " configuration and said internal wall separating the long and short legs of the "J" configuration, and further wherein said pathway communicates with a top of said gas-trapping compartment, said top corresponding to the top of the "J" configuration.
Claim 8
Dependent Claim
166 words
A method for mixing two components separately stored in an apparatus, according to Claim 1 or for mixing a liquid component in apparatus according to Claim 2 with a second component in a container after the access means of the apparatus has been connected with the container, the method comprising: (a) opening the pathway between the compressible chamber and the container; (b) transferring some of the liquid first component into the container through the pathway after some gas is in the container; (c) exchanging some of the liquid in the container with some of the liquid in the chamber by (i) manipulating the chamber until liquid in the gas-trapping compartment is adjacent the chamber access means and the chamber access means is above the gas-trapping compartment, (ii) compressing the chamber, thereby urging some liquid from the chamber into the container, and (iii) stopping said compression, thereby urging some liquid from the container into the chamber; and (d) emptying the liquid in the container into the chamber.
Claim 9
Dependent Claim
61 words
The method as in Claim 6, wherein said liquid transfer includes the steps of: (a) manipulating the chamber until the liquid first component is adjacent the chamber access means; (b) compressing the chamber, thereby urging some liquid from the chamber into contact with the second component in the container; and (c) stopping said compression before the container is filled with liquid.
Claim 10
Dependent Claim
124 words
The method as in Claim 6 or 7, wherein said liquid emptying step includes the further steps of: (a) manipulating the chamber such that at least some of the gas in the reservoir compartment enters the gas-trapping compartment through the flow path; (b) manipulating the chamber until the gas in the gas-trapping compartment is adjacent the selectively opened pathway and the selectively opened pathway is above the gas-trapping compartment; (c) compressing the chamber, thereby urging at least some of the gas from the gas-trapping compartment into the container, thus pressurizing the gas, above the liquid in the container; and (d) stopping said compression of the chamber, the pressurized gas in the container expelling the liquid in the container through the pathway into the chamber.
References Cited (Backward Citations)
No citation records indexed.
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