WO2000038742B1 - Method and apparatus for infrared sterilization - Google Patents
Method and apparatus for infrared sterilizationInfo
- Publication number
- WO2000038742B1 WO2000038742B1 PCT/US1999/031103 US9931103W WO0038742B1 WO 2000038742 B1 WO2000038742 B1 WO 2000038742B1 US 9931103 W US9931103 W US 9931103W WO 0038742 B1 WO0038742 B1 WO 0038742B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared radiation
- sterilized
- chamber
- heating element
- pathogen
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/085—Infrared radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/12—Apparatus for isolating biocidal substances from the environment
- A61L2202/122—Chambers for sterilisation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
Abstract
The disclosed invention relates to sterilization by infrared radiation to eliminate pathogenic bacteria such as Salmonella, E. Coli 0157:H7 and E. Coli (EXEC) from articles such as medical, dental and veterinary instruments, as well as from tableware and eating utensils. The invention further relates to sterilization of soil, military and agriculture equipment to eliminate pathogenic bacteria such as hepatitis, AIDS, and anthrax, and prions such as mad cow disease using infrared radiation. Sterilization is performed by exposing the article to infrared radiation generated from heating elements (15A, 15B) positioned in an enclosed chamber (9).
Claims
AMENDED CLAIMS
[received by the International Bureau on 22 June 2000 (22.06.00); original claims 1-25 replaced by amended claims 1-25 (5 pages)]
1. An apparatus for sterilizing an object of pathogens by infrared radiation in the presence of an atmosphere, the apparatus comprising, a chamber 9 having an atmosphere therein, the chamber 9 adapted tc receive a heating element to generate infrared radiation within chamber 9, the chamber 9 having means to support at least one tray 11 for holding an object to be sterilized, the chamber 9 also having a surface for reflecting infrared radiation generated by the Heating element onto the object, wherein the heating element consists essenLially of Nichrome w±re housed in a quartz tube, wherein the apparatus is free of a means for supplying a liquid to the object to be sterilized.
2. The apparatus of claim 1 further comprising wire mesh 13 positioned in tray 11, the wire mesh 13 adapted to support an object to be sterilized thercon.
3. The apparatus of claim 2 wherein the heating elements 15A, 15B generate infrared radiation at a wavelength of about 3.23 micron.
4 . The apparatus of claim 3 wherein the heating elements 15A,15B generate infrared radiation at an intensity of about 20KW/m^ to about. SOKW/rπ2.
5. The apparatus of claim 4 wherein the infrared radiation genexaled by Lhe heating element is able to cause the objects to be sterilized to reach a temperature of about 160 °C.
6. The apparatus of claim 1 wherein the reflecting surfaces are any of parabolic curvature or spherical curvature.
7. The apparatus of claim 6 wherein the reflecting surface has a
spherical curvature and a radius of curvature of about 3.75 inches.
3. An apparatus for sterilizing an object of pathogens by infrared radiation in the presence of an atmosphere, the apparatus comprising, a chamber 9 adapted for receiving a heating element for generating infrared radiation, the heating element consisting essentially ul a Nichrome wire housed in a sealed quartz tube and capable of generating infrared radiation at a wavelength of about 3.? mc.ron and at intensity of about 20KW/m2 to about 50KW/ιu2, the chamber 9 having means to support a tray 11 comprising wire mesh 13 positioned in tray 11 for holding an object to be sterilized, the chamber 9 also having a spherical reflecting suriace having a radius of curvature of about 3.75 inches for reflecting infrared radiation from the heating element onto the object to be sterilized, and wherein the apparatus is free of a means for supplying a liquid to the object to be sterilized.
10. A method for sterilizing an object of pathogens in an atmosphere by infrared radiation comprising, exposing an object free of applied liquid thereon and having a pathogen to be sterilized to infrared radiation within an apparatus 1 comprising a chamber 9 adapted to receive a heating element for generating infrared radiation, the heating element consisting essentially of a Nichrome wire housed in a sealed quartz tube to cause the object to reach a temperature sufficient to sterilize the object of pathogens without causing ambient atmosphere in chamber 9 to reach a temperature sufficient to sterilize the object of pathogens, the chamber 9 having means to support a tray 11 for holding
T
an object to be sterilized, wherein the apparatus is free of a means for supplying a liquid to the object to be sterilized
11. The method of claim 10 wherein the temperature is about 160° C.
12. The method of claim 10 wherein the infrared radiation has a wavelength of about 3.23 micron.
13. The method of claim 12 wherein the infrared radiation has an intensity of about 20KW/m2 to about 50KW/ιτt.
14. The method of claim 13 wherein the objects to be sterilized are exposed to the infrared radiation for a time sufficient to cause the objects to reach a temperature of about 160 °C.
15. The method of claim 10 wherein the pathogen is selected from the group consisting of Salmonella, E. Coli 0157 ;H7, E.Coli (EXEC), hepatitis, anthrax, and prions.
16. The method of claim 15 wherein the object to be sterilized is any of medical instruments, dental instruments, veterinary instruments, lableware, eating utensils, and soil,
17. A method for sterilizing an object of pathogens by infrared radiation in a atmosphere wherein the object is free of applied liquid comprising, exposing an object free of applied liquid and having a pathogen to be sterilized to infrared radiation from a heating element located in a chamber 9 housed in an apparatus 1, the infrared radiation having a wavelength of about 3.23 micron and an intensily of about 20KW/m' to about SOKN/m , the heating element consisting essentially of a Nichrome
wire housed in a scaled quartz tube, wherein the exposing is sufficient to cause the object to reach about 160° C without causing any ambient atmosphere in chamber 9 to 160° C, and wherein the pathogen is any of Salmonella, E. Coli 015 :H7, Ξ.Coli (EXEC), hepatitis, anthrax, and prions, and wherein the object to be sterilized is any of medical instruments, dental instruments, veterinary instruments, tableware, eating utensils, and soil.
18. A method for sterilizing agricultural products of pathogens by infrared radiation comprising, exposing an agricultural product having a pathogen to be sterilized to infrared radiation within an apparatus 1 having a chamber 9 wherein the infrared radiation is generated by a heating elements consisting essentially of a Nichrome wire housed in sealed quartz tube located in chamber 9 to cause the agricultural product to reach a temperature sufficient to sterilize a pathogen on the agricultural product without causing any ambient atmosphere in chamber 9 to reach the temperature sufficient to sterilize the agricultural product of a pathogen.
19. The method of claim 18 wherein the agricultural product is any of hamburger meat, ground meat, beef, poultry, and pork.
20. The method of claim 18 wherein the pathogen is any of Salmonella, E. Coli 0157-H7, E.Coli (EXEC), hepatiLis, anthrax, and prions.
21. The method of claim 18 wherein the temperature is about 158°F to about 176°F.
22. The method of claim 18 wherein the heating element generates
36
infrared radiation at a wavelength of about 3.23 micron.
23. The method of claim 22 wherein the heating element generates infrared radiation at an intensity of about 20KW/m to about 50KW/m2.
24. The method of claim 23 wherein the infrared radiation causes the product to be sterilized to reach about 160 °C.
25. The method of claim 18 wherein the pathogen is any of hepatitis, anthrax, and prions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU27161/00A AU2716100A (en) | 1998-12-30 | 1999-12-29 | Method and apparatus for infrared sterilization |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11424798P | 1998-12-30 | 1998-12-30 | |
| US60/114,247 | 1998-12-30 | ||
| US12524999P | 1999-03-19 | 1999-03-19 | |
| US60/125,249 | 1999-03-19 | ||
| US09/473,555 | 1999-12-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2000038742A1 WO2000038742A1 (en) | 2000-07-06 |
| WO2000038742B1 true WO2000038742B1 (en) | 2000-08-17 |
| WO2000038742A9 WO2000038742A9 (en) | 2001-11-01 |
Family
ID=26811974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1999/031103 WO2000038742A1 (en) | 1998-12-30 | 1999-12-29 | Method and apparatus for infrared sterilization |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2716100A (en) |
| WO (1) | WO2000038742A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6613505B2 (en) | 2001-04-12 | 2003-09-02 | Bioresource International, Inc. | Composition and method for destruction of infetious prion proteins |
| US6660227B2 (en) | 2002-09-20 | 2003-12-09 | Innovatek Corporation | Device and method for detecting, isolating and eliminating hazardous microbiological polluting agents |
| AT523884B1 (en) * | 2020-05-26 | 2023-02-15 | Robert Puerker | Device for inactivating microorganisms |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01192361A (en) * | 1988-01-27 | 1989-08-02 | Houshin Kagaku Sangiyoushiyo:Kk | Sanitary device |
| US5472720A (en) * | 1992-06-17 | 1995-12-05 | Mitec Scientific Corporation | Treatment of materials with infrared radiation |
| JP3530954B2 (en) * | 1994-03-24 | 2004-05-24 | 清之 竹迫 | Far-infrared sterilizer |
| US5820820A (en) * | 1997-04-18 | 1998-10-13 | Pierce; Brian N. | Method of thermally and selectively separating water and or solvents from solids under vacuum utilizing radiant heat |
-
1999
- 1999-12-29 WO PCT/US1999/031103 patent/WO2000038742A1/en active Application Filing
- 1999-12-29 AU AU27161/00A patent/AU2716100A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000038742A9 (en) | 2001-11-01 |
| WO2000038742A1 (en) | 2000-07-06 |
| AU2716100A (en) | 2000-07-31 |
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