Monitoring and control of sterilization processes with semicondu

Details Monitoring and control of sterilization processes with semicondu Monitoring and control of sterilization processes with semicondu

1996-07-03

1999-03-16

Smith, Lynette F.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

422110, 422108, 422105, 422 32, A61L 200, G05D 700, G05D 1600, G05B 100

Patent

active

058825908

ABSTRACT:
The invention is a system and method for real-time monitoring and control of chemical sterilant concentration during all phases of a sterilization cycle by employing semiconductor-based sensor modules to selectively detect and measure the actual sterilant concentration in real time. In response to the transmitted concentration values, the sterilizer control system controls critical environmental parameters to maintain concentration levels within acceptable ranges for given time periods to assure sterilization efficacy and that the sterilant has been properly exhausted at completion of the cycle. The selectivity, sensitivity and accuracy of the semiconductor sensor are optimized by calibrating the sensor to baseline environmental parameters and by adjusting the sensor concentration reading when environmental parameters change during the sterilization cycle, by programming a new baseline value for the sterilant concentration at the new condition.

REFERENCES:
patent: 4908188 (1990-03-01), Jeffries
patent: 5608156 (1997-03-01), Ando et al.

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