STORAGE STABLE FLUID INJECTION DEVICE AND ASSOCIATED PROCESS

• US 20010027293A1
• Filed: 06/29/1999
• Published: 10/04/2001
• Est. Priority Date: 06/29/1999
• Status: Abandoned Application

• Current Assignee: Microlin LLC
• Original Assignee: Microlin LLC
• Inventors: JOSHI, ASHOK V.
• Application Number:
  US09/342,851
• Publication Number:
  US 20010027293A1
• Time in Patent Office: Days
• US Class Current: 604/131
• CPC Class Codes: A61M 5/2046 Media being expelled from injector by gas generation, e.g. explosive charge
• CPC Class Codes: A61M 5/30 Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules

Abstract

A storage stable needleless fluid injection device comprising a reaction chamber capable of retaining a predetermined quantity of a chemical reagent that generates pressure when the chemical reagent is at least one of reacted, ignited, exploded, and decomposed, an initiator for initiating reaction, ignition, explosion and/or decomposition of the chemical reagent, a fluid retention chamber capable of retaining a fluid, wherein the fluid retention chamber includes an aperture, and means for dispensing a fluid retained within the fluid retention chamber out of the aperture, and in turn, into a human or animal body, or other object. The device is capable of generating pressures in excess of 500 p.s.i. with the use of only very small amounts of the chemical reagent. Such high pressures enable needless injections to deep sub-dermal locations within a body or other desired environments.

Claims

1. A storage stable fluid injection device comprising:

a reaction chamber capable of retaining a predetermined quantity of a chemical reagent that generates pressure when the chemical reagent is at least one of reacted, ignited, exploded, and decomposed;

an initiator for initiating at least one of reaction, ignition, explosion, and decomposition of the chemical regent;

a fluid retention chamber capable of retaining a fluid, wherein the fluid retention chamber includes an aperture; and

means for dispensing a fluid retained within the fluid retention chamber out of the aperture, and in turn, injecting the fluid.

2. The fluid injection device according to

claim 1

, wherein the reaction chamber includes a chemical reagent selected from the group consisting essentially of azides, oxides, superoxides, peroxides, perchlorates, hydroxides, hydrides, nitrates, nitrides, carbonates, metal powders, explosive compositions and mixtures thereof.

3. The fluid injection device according to

claim 2

, wherein the chemical reagent consists essentially of an azide mixed with a metal oxide.

4. The fluid injection device according to

claim 3

, wherein the chemical reagent consists of sodium azide.

5. The fluid injection device according to

claim 2

, wherein the chemical reagent is selected from the group consisting of explosive compositions.

6. The fluid injection device according to

claim 1

, wherein the initiator is selected from the group consisting of an electrical or mechanical spark ignitor, an electrical resistor ignitor, a mechanical compression ignitor, and combinations thereof.

7. The fluid injection device according to

claim 1

, wherein the fluid is injected into a body.

8. The fluid injection device according to

claim 1

, wherein the means for dispensing the fluid retained within the fluid retention chamber comprises a fluid dispensing one-way valve.

9. The fluid injection device according to

claim 1

, wherein the means for dispensing a fluid retained within the fluid retention chamber comprises a movable member associated with the fluid retention chamber.

10. The fluid injection device according to

claim 9

, wherein the movable member comprises an elastomeric membrane.

11. The fluid injection device according to

claim 9

, wherein the movable member comprises a plunger.

12. The fluid injection device according to

claim 1

, further comprising a needle associated with the aperture of the fluid retention chamber.

13. The fluid injection device according to

claim 1

, further comprising a pressure relief valve.

14. The fluid injection device according to

claim 1

, further including a clamp for stabilizing the device during operation.

15. A process for injecting a fluid comprising the steps of:

initiating at least one of reaction, ignition, explosion, and decomposition of a predetermined quantity of a chemical reagent retained within a reaction chamber;

generating pressure from at least one of the reacted, ignited, exploded and decomposed chemical reagent;

displacing a member associated with a fluid retention chamber with the generated pressure, to in turn, dispense a predetermined amount of fluid out of an aperture of the fluid retention chamber; and

injecting the fluid.

16. The process according to

claim 15

, wherein the step of initiating includes the step of igniting a portion of the chemical reagent with heat generated from an electrical resistor.

17. The process according to

claim 15

, wherein the step of initiating includes the step of igniting a portion of the reagent with a spark from a mechanical or electrical sparker.

18. The process according to

claim 15

, wherein the step of initiating includes the step of igniting a potion of the reagent at predetermined intervals.

19. The process according to

claim 15

, wherein the step of generating pressure includes the step of generating a gaseous species from at least one of the group consisting essentially of azides, oxides, superoxides, peroxides, perchlorates, hydroxides, hydrides, nitrates, nitrides, metal powders, explosive compositions and mixtures thereof.

20. The process according to

claim 15

, wherein the step of generating pressure includes the step of generating nitrogen from decomposing an azide.

21. The process according to

claim 15

, wherein the step of generating pressure includes the step of generating at least one of water vapor, nitrogen, and carbon dioxide from the group consisting essentially of carbonates, hydroxides, hydrides, nitrides, nitrates, metal powders, and mixtures thereof.

22. The process according to

claim 15

, wherein the step of displacing the member associated with the fluid retention chamber includes the step of displacing an elastomeric membrane.

23. The process according to

claim 15

, wherein the step of displacing the member associated with the fluid retention chamber includes the step of displacing a plunger.