Device for the sterilization of fluid substances

• US 4,370,305 A
• Filed: 07/18/1980
• Issued: 01/25/1983
• Est. Priority Date: 07/23/1979
• Status: Expired due to Term

• Current Assignee: Hoelzle & Chelius Limited Liability Company
• Original Assignee: Hoelzle & Chelius KG
• Inventors: Affonso, Alvaro
• Primary Examiner(s): Richman, Barry S.
• Application Number:
  US06/170,104
• Time in Patent Office: 921 Days
• Field of Search: 422/29, 422/37, 422/238, 422/239, 422/305, 422/292, 210/753, 210/754, 210/757, 210/764, 210/192, 210/205, 239/34
• US Class Current: 422/292
• CPC Class Codes: A61L 2/20 Gaseous substances, e.g. vapours
• CPC Class Codes: A61L 9/015 using gaseous or vaporous substances, e.g. ozone A61L9/20 takes precedence ; evaporation in general B01B1/005
• CPC Class Codes: C02F 1/72 by oxidation C02F1/4672 takes precedence
• CPC Class Codes: C02F 1/76 with halogens or compounds of halogens C02F1/4674 takes precedence

Abstract

A device for the sterilization of fluids wherein a sterilizing gas is chemically generated in-situ within a liquid-impermeable container, which container is in contact with the fluid to be sterilized. The container is constructed at least in part of a solid, non-porous, liquid-impermeable synthetic plastic barrier, which barrier permits controlled diffusion of the sterilizing gas therethrough while preventing passage therethrough of impurities and the residue of the gas generation reaction.

Claims

1. An apparatus for the sterilization of fluids comprising:

a substance capable of generating a disinfecting gas upon chemical activation;

a liquid-impermeable container surrounding said substance, at least a portion of the wall of said container being formed of a solid, non-porous, liquid-impermeable synthetic plastic barrier separating said substance from a fluid to be sterilized and permitting controlled diffusion of disinfecting gas while preventing the passage of impurities and the residue of the gas generation reaction therethrough; and

means for contacting said fluid to be sterilized with said synthetic plastic barrier.

2. The fluid sterilization apparatus of claim 1 wherein said means for contacting said fluid with said synthetic plastic barrier comprises a vessel simultaneously housing said container and said fluid.

3. The fluid sterilization apparatus of claim 1 wherein said means for contacting said fluid with said synthetic plastic barrier comprises a circuit for the flow of said fluid past said synthetic plastic barrier.

4. The fluid sterilization apparatus of claim 1 wherein said substance is activated and generates disinfecting gas upon contact with water.

5. The fluid sterilization apparatus of claim 1 wherein said container is a cartridge having at least a portion of the outside surface thereof comprised of said solid, non-porous, liquid-impermeable synthetic plastic barrier.

6. The fluid sterilization apparatus of claim 1 further comprising a plurality of said containers.

7. The fluid sterilization apparatus of claim 1 wherein said synthetic plastic barrier is formed from a solid synthetic polymer selected from the group consisting of polyethylene, polypropylene, polyvinylchloride, polyethylene-polypropyleneamide, polytetrafluoroethylene and mixtures and derivatives thereof.

8. The fluid sterilization apparatus of claim 1 wherein the disinfecting gas is selected from the group consisting of halogen, a dioxide of a halogen, sulfur dioxide and derivatives thereof.

9. The fluid sterilization apparatus of claim 1 wherein said container comprises a bag having at least a portion of the wall thereof formed of said solid, non-porous, liquid-impermeable synthetic plastic barrier.

10. The fluid sterilization apparatus of claim 1 wherein said container is a flexible tube member having at least a portion of the wall thereof covered by said solid, non-porous, liquid-impermeable synthetic plastic barrier.

11. The fluid sterilization apparatus of claim 1 wherein said container comprises two chambers separated by a releasable separating means;

one of said chambers containing said substance capable of generating said disinfecting gas, and the other of said chambers containing a chemical activator for said substance.

12. The fluid sterilization apparatus of claim 1 wherein said fluid is water.

13. The fluid sterilization apparatus of claim 12 further comprising a means for introducing a chemical activator into contact with said substance capable of generating disinfecting gas.

14. The fluid sterilization apparatus of claim 13 wherein said activator introducing means comprises a conduit into said container.