Gas amplifier

• US 5,855,761 A
• Filed: 06/27/1996
• Issued: 01/05/1999
• Est. Priority Date: 06/07/1995
• Status: Expired due to Fees

• Current Assignee: Microlin LLC
• Original Assignee: Ceramatec, Inc. (Trelleborg AB)
• Inventors: Joshi, Ashok V.
• Primary Examiner(s): ACHUTAMURTHY, PONNATHAPURA N
• Application Number:
  US08/671,247
• Time in Patent Office: 922 Days
• Field of Search: 423/659, 422/87, 422/129, 436/55, 205/615, 205/618, 205/619, 205/620, 205/628, 205/633, 205/637
• US Class Current: 205/615
• CPC Class Codes: A61M 2005/14204 with gas-producing electrochemical cell
• CPC Class Codes: A61M 5/14526 the piston being actuated by fluid pressure

Abstract

A fluid delivery device (10) operated by a first gas delivery device (12) (e.g. electrochemical pump) that takes advantage of sequential gas production methods. The fluid delivery device includes a container (14) with an interior surface. An first gas delivery device for producing or delivering a first gas is placed in one end of the container. A moveable member (e.g. piston, bladder (18) or membrane) is positioned within the container, which moveable member, together with the container'"'"'s interior surface and the electrochemical cell, structurally define a fluid-tight chamber. The moveable member may abut a first reactive material. Unreacted material (34), chemically reactive with the either the first gas or the first reactive material to generate a second gas, is contained within the container. This apparatus also includes a reservoir of a liquid, adjacent to the moveable member in such a way that when the moveable member moves, the liquid is displaced out of the reservoir through a spout associated with the end of the container distal to the electrochemical cell. The reactive fluids are generally acids, bases, azides, and peroxides. The invention is useful for, among other things, the controlled delivery of medical fluids, fragrances, insecticides, and lubricants.

Claims

1. A process for delivering a fluid comprising the steps of:

controllably generating a first gas into a reaction chamber;

reacting the first gas with a chemical reagent in the reaction chamber to controllably generate a second gas;

imparting pressure upon a movable member associated with a fluid dispensing chamber, associated with the reaction chamber, by the second gas; and

controllably displacing a fluid through and out of an aperture of the fluid dispensing chamber upon movement of the movable member.

2. The process according to claim 1, wherein the step of controllably generating a first gas comprises an electrochemical reaction.

3. The process according to claim 1, further comprising the step of regulating the generation of the first gas.

4. The process according to claim 3, further comprising the step of monitoring at least one of the temperature, pressure and flow rate of at least one of the reaction chamber and fluid dispensing chamber.

5. The process of claim 1, wherein the first generated gas is selected from the group consisting of hydrogen, oxygen, nitrogen, halogen, carbon dioxide, sulfur dioxide and mixtures thereof.

6. The process according to claim 1, wherein the chemical reagent is selected from the group consisting of azides, peroxides, nitrides, carbonates, bicarbonates.

7. The process according to claim 1, wherein the fluid in the fluid dispensing chamber comprises compounds selected from the group consisting of medicinal products, lubricants, disinfectants, deodorants, pesticides, and insecticides.

8. A process for delivering a fluid comprising the steps of:

controllably generating a first gas into a chamber;

imparting pressure upon a movable member associated with a first fluid dispensing chamber, associated with the gas chamber, by the first gas;

controllably displacing a first chemical reagent through and out of an aperture of the first fluid dispensing chamber and into a reaction chamber;

reacting the first chemical reagent with a second chemical reagent in the reaction chamber to controllably generate a second gas;

imparting pressure upon a movable member associated with a second fluid dispensing chamber, associated with the reaction chamber, by the second gas; and

controllably displacing a fluid through and out of an aperture of the fluid dispensing chamber upon movement of the movable member.

9. The process according to claim 8, wherein the step of controllably generating a first gas comprises an electrochemical reaction.

10. The process according to claim 8, further comprising the step of regulating the generation of the of the first gas.

11. The process according to claim 10, further comprising the step of monitoring at least one of the temperature, pressure, and flow rate of at least one of the gas chamber, first fluid dispensing chamber, reaction chamber, and second fluid dispensing chamber.

12. The process of claim 8, wherein the first generated gas is selected from the group consisting of hydrogen, oxygen, nitrogen, halogen, carbon dioxide, sulfur dioxide and mixtures thereof.

13. The process according to claim 8, wherein the first chemical reagent is selected from the group consisting of azides, nitrides, peroxides, carbonates, bicarbonates and mixtures thereof and the second chemical reagent is selected from fluids which will react with the first chemical reagent to produce a gas.

14. The process according to claim 8, wherein the first chemical reagent is an acid.

15. The process according to claim 8, wherein the second chemical reagent is a base.

16. The process according to claim 8, wherein the second chemical reagent is selected from at least one of the group consisting of reactive metals, metal oxides, carbonates and bicarbonates.

17. The process according to claim 8, wherein the first chemical reagent is a base and the second chemical reagent is an acid.

18. The process according to claim 8, wherein the fluid in the fluid dispensing chamber comprises compounds selected from the group consisting of medicinal products, lubricants, disinfectants, deodorants, pesticides, and insecticides.