Method of making an electrochemical sensing cell

Details Method of making an electrochemical sensing cell Method of making an electrochemical sensing cell

1984-03-09

1985-08-13

Kimlin, Edward

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156654, 1566591, 29570, 204403, 204416, 128635, 357 25, G01N 2746

Patent

active

045348251

ABSTRACT:
An in vivo electrochemical monitoring device is formed by a catheter-like member which terminates in a closed end having a wall with a fixed opening to admit fluid to be tested, such as blood in an artery. An electrochemical sensor, such as an ISFET device for monitoring the concentration of a particular ion in blood, is mounted inside the tube at a fixed location below the opening preferably a larger sensing chamber. An infusion channel in the tube is arranged to flood the sensor with a fluid of known chemical properties so that the sensor output can be calibrated. Under pressure the calibration fluid expels the test fluid out of the tube or chamber via the fixed opening. A method of constructing a suitable chamber on an ISFET wafer is also disclosed.

REFERENCES:
patent: 3476670 (1969-11-01), Weiner
patent: 3924321 (1975-12-01), Cook, Jr. et al.
patent: 4020830 (1977-05-01), Johnson et al.
patent: 4041933 (1977-08-01), Reichenberger
patent: 4152233 (1979-05-01), Chand
patent: 4221567 (1980-09-01), Clark et al.

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