Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using sonic or ultrasonic energy
Patent
1983-05-23
1984-05-15
Lacey, David L.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using sonic or ultrasonic energy
422 24, 422 28, 422 36, 422 37, 422300, A61L 210, A61L 218
Patent
active
044487509
ABSTRACT:
A method for disinfecting and/or sterilizing small objects such as medical and dental instruments and the like wherein the object to be disinfected and/or sterilized is contacted with a liquid, such as an aqueous solution of sodium dodecyl sulfate and carbamide, which is substantially transparent to ultraviolet radiation and has some bactericidal activity itself, at a temperature in the range from about 0.degree. C. to about 100.degree. C. and preferably at about 25.degree. C., and the object while contacted by the liquid is exposed simultaneously to ultrasonic radiation having a frequency in the range from about 8 kilohertz to about 300 kilohertz, preferably from 15 kilohertz to 60 kilohertz, with an energy density of application from about 10 watts/liter to about 5 watts/milliliter, and to ultraviolet radiation having a wavelength in the range from about 1500 .ANG. to about 4000 .ANG., preferably at about 2537 .ANG..
REFERENCES:
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patent: 3478758 (1969-11-01), Davies
patent: 3672823 (1972-06-01), Boucher
patent: 3697222 (1972-10-01), Sierra
patent: 3912450 (1975-10-01), Boucher
patent: 3955922 (1976-05-01), Moulthrop
M. L. Fuesting and A. N. Bahn, "Synergistic Bacterial Activity of Ultrasonic, Ultraviolet Light and Hydrogen Peroxide", AADR Abstracts #493, 1980.
El'piner, Ultrasound, Physical, Chemical and Biological Effects, Consultants Bureau, New York, 1964, pp. 266-289.
Boucher, M. G., Ultrasonics: A Tool To Improve Biocidal Efficacy of Sterilants or Disinfectants in Hospital and Dental Practice, Canadian Journal of Pharmaceutical Sciences, vol. 14, No. 1, 1979, pp. 1-12.
Boucher, M. G., Advances in Sterilization Techniques State of the Art and Recent Breakthroughs, American Journal of Hospital Pharmacy 29, pp. 660-672 (Aug.), 1972.
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