Patent ID: 9658167
Date: 2017-05-23
CPC Classifications: A61B,B01L,G01D,G01K,G01N

Claim:
1. A sensor label that is designed for and fabricated for single use or disposability that senses a parameter and records the sensed parameter, comprising: a semi-permeable medium; a parameter-sensitive and activatable developer on the semi-permeable medium, the developer, when activated exhibits a detectable manifestation of a changed state that progresses over time; the activatable developer is a piezo-electric that is configured to provide a voltage which changes in response to an environmental factor that is fixed against a time by a shock wave progressing during the time through the semi-permeable medium; a reader of the detectable manifestation of this changed state; and a recorder of the detectable manifestation of this changed state that logs parameter change data.