Appeal No. 96-0251
Application 07/874,697
APPENDIX
3. A method for extending the service life of
implantable sensors containing corrodible electrodes within a
potentiostat sensor circuit having a sensor having a
corrodible reference electrode, at least one noble metal
cathodic working electrode, and at least one noble metal
anodic counter electrode maintained at a low impedance, which
comprises including in said sensor a plurality of working or
reference electrodes, with only one of said plurality of
electrodes operative at any one time, with all of said
electrodes adapted to be connected sequentially into the
sensor circuit.
7. A method for extending the service life of
implantable sensors containing corrodible electrodes within a
potentiostat sensor circuit having a sensor having a
corrodible reference electrode, at least one noble metal
cathodic working electrode, and at least one noble metal
anodic counter electrode maintained at a low impedance, which
comprises periodically changing the polarization of said
working and reference electrodes so as to drive
electrodeposited material from the working electrode back to
the reference electrode.
9. A method for extending the service life of
implantable sensors containing corrodible electrodes within a
potentiostat sensor circuit having a sensor having a
corrodible reference electrode, at least one noble metal
cathodic working electrode, and at least one noble metal
anodic counter electrode maintained at a low impedance, which
comprises applying to said reference electrode a cathodic
current.
10. A method for extending the service life of
implantable sensors containing corrodible electrodes within a
potentiostat sensor circuit having a sensor having a
corrodible reference electrode, at least one noble metal
cathodic working electrode, and at least one noble metal
anodic counter electrode maintained at a low impedance, which
comprises increasing the input impedance at the reference
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