Method and sensor for detecting catheter obstruction
First Claim
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1. A self-monitoring catheter system for detecting an obstruction during use of a catheter comprising:
- a catheter with an interior lumen that has one or more ports into the lumen;
a first and a second electrode; and
an impedance measurement instrument that measures and signals changes in the impedance between the first and the second electrodes that is caused by an obstruction during use of the catheter after the first electrode is exposed to fluid within the catheter lumen,wherein the first or the second electrode is affixed to a polymer substrate within the catheter lumen.
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Abstract
A self-monitoring catheter system may detect an obstruction during use of a catheter. The system may include a catheter with an interior lumen that has one or more ports into the lumen; a first and a second electrode; and an impedance measurement instrument that measures changes in the impedance between the first and the second electrodes after the first electrode is exposed to fluid within the catheter lumen, thereby signaling an obstruction during use of the catheter.
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14 Claims
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1. A self-monitoring catheter system for detecting an obstruction during use of a catheter comprising:
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a catheter with an interior lumen that has one or more ports into the lumen; a first and a second electrode; and an impedance measurement instrument that measures and signals changes in the impedance between the first and the second electrodes that is caused by an obstruction during use of the catheter after the first electrode is exposed to fluid within the catheter lumen, wherein the first or the second electrode is affixed to a polymer substrate within the catheter lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification