Metabolite sensor including a chemical concentration sensitive flow controller for a drug delivery system
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United States of America Patent
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Nov 10, 1987
Grant Date -
N/A
app pub date -
Feb 3, 1986
filing date -
Feb 3, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for the measurement of a metabolite in a physiological fluid is disclosed which comprises a catheter which includes an internal metabolite sensor downstream from a semipermeable region where dynamic equilibrium is attained between the external metabolite and a higher concentration of the same metabolite contained in an infusate which is flowed through the catheter. The changing metabolite concentration also can open and close a chemical valve to control the codelivery of a drug through the catheter.
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