Flash sterilization with plasma

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using direct contact with electrical or electromagnetic...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

422 23, 422 33, 422 29, 422906, A61L 200

Patent

active

051788292

ABSTRACT:
A method for flash sterilization with a plasma gas includes exposing an unpackaged article in a sterilizing chamber to a gas plasma flowing from a plasma generating chamber until the temperature in the sterilizing chamber rises to a preselected maximum temperature of at least 100.degree. C. The flow of the plasma gas to the sterilizing chamber is terminated until the temperature in the sterilizing chamber falls to a temperature below the preselected maximum temperature. These steps are repeated until sterilization of the article is effected. The temperature below the preselected maximum temperature when gas plasma flow is again initiated is preferably not more than 3.degree. C. below the preselected maximum temperature. The gas plasma can be generated from a mixture of gases consisting essentially of argon, helium, nitrogen or mixtures thereof; from 1 to 21 (v/v) % oxygen; and from 1 to 20 (v/v) % hydrogen; or a mixture containing from 1 to 10 (v/v) % oxygen and from 3 to 7 (v/v) % hydrogen; or a mixture containing 1 to 10 (v/v) % hydrogen and from 90 to 99 (v/v) % of argon, helium, nitrogen or mixtures thereof. Preferably the pressure in the sterilizing chamber rises to from 0.1 to 10 torr when the gas plasma is flowing into the chamber, and the pressure in the sterilizing chamber falls to a lower pressure when the gas plasma flow into the sterilizing chamber is terminated.

REFERENCES:
patent: 3383163 (1968-05-01), Menashi
patent: 3704096 (1972-11-01), Verses et al.
patent: 3737608 (1973-06-01), Nagao et al.
patent: 3851436 (1974-12-01), Fraser et al.
patent: 3948601 (1976-04-01), Fraser et al.
patent: 4169123 (1979-09-01), Moore et al.
patent: 4169124 (1979-09-01), Forstrom et al.
patent: 4203943 (1980-05-01), Coillis et al.
patent: 4207286 (1980-09-01), Boucher
patent: 4230663 (1980-10-01), Forstrom et al.
patent: 4241010 (1980-12-01), Baran
patent: 4289728 (1981-09-01), Peel et al.
patent: 4321232 (1982-03-01), Bithell
patent: 4348357 (1982-09-01), Bithell
patent: 4366125 (1982-12-01), Kodera et al.
patent: 4437567 (1984-03-01), Jeng et al.
patent: 4643876 (1987-02-01), Jacobs et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Flash sterilization with plasma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flash sterilization with plasma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flash sterilization with plasma will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1218009

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.