Device for repeated registration of the number of thermal cycles to which a part for medical usage has been subjected
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United States of America Patent
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Sep 25, 2001
Grant Date -
N/A
app pub date -
Aug 3, 1999
filing date -
Aug 5, 1998
priority date (Note) -
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Abstract
A device for repeated registration of the number of thermal cycles to which a part for medical usage has been subjected has a temperature-sensitive element and/or a pressure-sensitive element arranged in conjunction with the part. This element reversibly changes its physical shape with temperature and/or pressure, variations in pressure being invariably associated with changes in temperature. A registration unit registers this change in shape when it exceeds a specific threshold value, as an indication of the part undergoing, or having undergone, a thermal cycle.
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