PRESSURIZED RESERVOIR SYSTEM FOR STORING AND DISPENSING LIQUIDS

• US 20110309107A1
• Filed: 02/25/2010
• Published: 12/22/2011
• Est. Priority Date: 02/26/2009
• Status: Abandoned Application

• Current Assignee: G-Sense Ltd.
• Original Assignee: G-Sense Ltd.
• Inventors: Shekalim, Avraham, Peleg, Noam
• Application Number:
  US13/148,316
• Publication Number:
  US 20110309107A1
• Time in Patent Office: Days
• US Class Current: 222/135
• CPC Class Codes: A61M 2005/1787 Syringes for sequential delivery of fluids, e.g. first medicament and then flushing liquid
• CPC Class Codes: A61M 2005/31598 having multiple telescopically sliding coaxial pistons encompassing volumes for components to be mixed
• CPC Class Codes: A61M 5/1407 Infusion of two or more substances
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons

Abstract

A pressurized reservoir system for storing and dispensing a plurality of liquids in very small quantities in which the liquids are dispensed independently from each other and also together in fixed volumetric proportions.

Claims

1. A pressurized reservoir system for storing and dispensing liquids comprising;

(a) a housing;

(b) a piston arrangement in said housing including at least one piston, said

piston arrangement at least partially defining at least two liquid-storage volumes not in fluid communication with each other, each of said liquid-storage volumes having a flow path for dispensing a stored liquid; and

(c) a resilient biasing element configured to bias said piston arrangment to pressurize said liquid-storage volumes,

wherein said piston arrangement is configured to independently dispense each of the liquids stored in said liquid-storage volumes.

2. The pressurized reservoir system of claim 1, wherein said piston arrangement comprises two pistons in axial alignment, said biasing element being disposed between said two pistons so as to bias both of said two pistons in opposite directions.

3. The pressurized reservoir system of claim 1, wherein said piston arrangement further comprises at least one floating.

4. The pressurized reservoir system of claim 1, wherein said piston arrangement comprises at least one piston having a cavity of parallel walls, wherein said parallel walls slidingly engage an extended body thereby at least partially defining a first of said two liquid-storage volumes.

5. The pressurized reservoir system of claim 4, wherein said at least one piston has an external surface extending from said parallel walls so as to be in sliding engagement with said housing thereby partially defining a second of said two liquid-storage volumes not in fluid communication with each other.

6. The pressurized reservoir system of claim 4, wherein said at least one piston is implemented as a floating piston.

7. The pressurized reservoir system of claim 5, wherein said extended body includes a static projection from said housing.

8. The pressurized reservoir system of claim 5, wherein said, wherein said static projection includes flow path of said first liquid-storage.

9. The pressurized reservoir system of claim 1, wherein said housing comprises a cylindrical wall.

10. The pressurized reservoir system of claim 1, wherein said biasing element comprises a spring.

11. The pressurized reservoir system of claim 1, wherein said biasing element comprises a compressed gas.

12. The pressurized reservoir system of claim 1, further comprising a valve-actuator control-system configured for controlling valves regulating flow in said flow paths.

13. The pressurized reservoir system of claim 1, further comprising an outlet conduit at least partially containing one of said flow paths, said outlet conduit passing through an opening in said primary piston and extending into one of said liquid-storage volumes, said primary piston being in sealed sliding engagement with said outlet conduit.