Sterilization indicator

Details Sterilization indicator Sterilization indicator

1983-09-27

1986-04-01

Warden, Robert J.

Chemistry: molecular biology and microbiology

Apparatus

Bioreactor

116307, 215228, 215230, 215253, 215307, 220366, 435 31, 435810, C12M 124, C12Q 122, G09F 900, B65D 2554

Patent

active

045798230

ABSTRACT:
A sterilization indicator device comprises a receptacle for containing a spore disc and a sealed ampule of culture medium. A closure is threaded onto the receptacle and cooperates with the receptacle to provide a passageway for the sterilization gases to reach the spore disc. Upon completion of the sterilization, the closure is threaded further onto the receptacle to fracture the ampule and cause the nutrient to come into contact with the spore disc. At the same time an indicator flag is moved from an initial position to a second position to indicate that the device has been activated. Also, a seal is provided between the closure and the receptacle to seal off the spore disc from exposure to ambient air during incubation of the spore strip.

REFERENCES:
patent: 2961108 (1960-11-01), Johnson
patent: 3216600 (1965-11-01), Dreps
patent: 3440144 (1969-04-01), Andersen
patent: 3638918 (1972-01-01), Denholtz
patent: 3655035 (1972-04-01), Muhlbauer
patent: 3661717 (1972-05-01), Nelson
patent: 3739947 (1973-06-01), Baumann et al.
patent: 3762540 (1973-10-01), Baumann et al.
patent: 3809280 (1974-05-01), Park et al.
patent: 4291122 (1981-09-01), Orelski
patent: 4304869 (1981-12-01), Dyke
patent: 4355111 (1982-10-01), Shimizu et al.
patent: 4461837 (1984-07-01), Karle et al.

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