Patent ID: 9687182
Date: 2017-06-27
CPC Classifications: A61B,B01D,F15C,F16K

Claim:
1. A method for operating a medical sensor system having: A. a reservoir having a reservoir interior sample volume and a reservoir exterior, B. a sensor situated within the reservoir interior sample volume, and C. a reservoir cap separating the reservoir interior sample volume and the reservoir exterior, wherein the cap is defined by an organic membrane having pores therein, the pores having controllably adjustable pore sizes, the method including the steps of: a. applying a stimulus to the cap to change it from a closed state wherein the pores are closed, with the cap thereby separating the sample volume from the exterior of the reservoir, to an intermediate state wherein the pores are open to less than their maximum pore sizes, thereby exposing the sample volume to the exterior of the reservoir; b. obtaining a reference reading from the sensor when the cap is in the intermediate state; c. applying a stimulus to the cap to change it to a measurement state wherein the pores are open to a desired pore size greater than the pore size at the intermediate state; d. obtaining a measurement reading from the sensor when the cap is in the measurement state; e. adjusting the measurement reading in dependence on the reference reading.