Method of making an electrochemical sensing cell
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.
- Assignee:
- Cordis Europa, N. V. (Netherlands)
- Patent Number(s):
- US 4534825
- OSTI ID:
- 6457042
- Resource Relation:
- Patent Priority Date: Priority date 9 Mar 1984, Netherlands; Other Information: PAT-APPL-587819
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mixing in the human carotid artery during carotid drug infusion studied with PET
Roles of thrombin and platelet membrane glycoprotein IIb/IIIa in platelet-subendothelial deposition after angioplasty in an ex vivo whole artery model
Related Subjects
47 OTHER INSTRUMENTATION
BLOOD
CHEMICAL COMPOSITION
IN VIVO
ION SELECTIVE ELECTRODE ANALYSIS
MONITORING
ELECTROCHEMICAL CELLS
DESIGN
FABRICATION
MONITORS
ELECTROCHEMISTRY
SAMPLING
TRANSISTORS
BIOLOGICAL MATERIALS
BODY FLUIDS
CHEMICAL ANALYSIS
CHEMISTRY
MATERIALS
MEASURING INSTRUMENTS
SEMICONDUCTOR DEVICES
550601* - Medicine- Unsealed Radionuclides in Diagnostics
440300 - Miscellaneous Instruments- (-1989)