FLUID ACCUMULATION MONITORING DEVICES, SYSTEMS AND METHODS
First Claim
1. For use with an implantable system, a method for monitoring fluid accumulation in a patient'"'"'s thoracic cavity, the method comprising:
- (a) obtaining a thoracic impedance signal for the patient;
(b) determining, based on the thoracic impedance signal,(b.1) a duration metric indicative of a duration of drop of the thoracic impedance signal,(b.2) a magnitude metric indicative of a magnitude of drop of the thoracic impedance signal, and(b.3) a rate metric indicative of a rate of drop of the thoracic impedance signal; and
(c) monitoring a fluid accumulation level based on the duration metric, the magnitude metric and the rate metric.
1 Assignment
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Accused Products
Abstract
Provided herein are implantable systems, and methods for use therewith, for monitoring a patient'"'"'s fluid accumulation level. A thoracic impedance signal for the patient is obtained. Based on the thoracic impedance signal, a duration metric indicative of a duration of drop of the thoracic impedance signal, a magnitude metric indicative of a magnitude of drop of the thoracic impedance signal, and a rate metric indicative of a rate of drop of the thoracic impedance signal is determined. The patient'"'"'s fluid accumulation level is monitored based on the duration metric, the magnitude metric and the rate metric.
15 Citations
24 Claims
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1. For use with an implantable system, a method for monitoring fluid accumulation in a patient'"'"'s thoracic cavity, the method comprising:
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(a) obtaining a thoracic impedance signal for the patient; (b) determining, based on the thoracic impedance signal, (b.1) a duration metric indicative of a duration of drop of the thoracic impedance signal, (b.2) a magnitude metric indicative of a magnitude of drop of the thoracic impedance signal, and (b.3) a rate metric indicative of a rate of drop of the thoracic impedance signal; and (c) monitoring a fluid accumulation level based on the duration metric, the magnitude metric and the rate metric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable system configured to monitor fluid accumulation in a patient'"'"'s thoracic cavity, comprising:
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one or more electrodes configured to obtain a thoracic impedance signal for the patient; a fluid accumulation monitor configured to determine, based on the thoracic impedance signal, a duration metric indicative of a duration of drop of the thoracic impedance signal, a magnitude metric indicative of a magnitude of drop of the thoracic impedance signal, and a rate metric indicative of a rate of drop of the thoracic impedance signal; and wherein the fluid accumulation monitor is configured to monitor a fluid accumulation level based on the duration metric, the magnitude metric and the rate metric. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. For use with an implantable system, a method comprising:
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(a) obtaining a thoracic impedance signal indicative of fluid accumulation within a patient'"'"'s thoracic cavity; (b) monitoring, based on the thoracic impedance signal, a duration of drop of the thoracic impedance signal, a magnitude of drop of the thoracic impedance signal, and a rate of drop of the thoracic impedance signal; and (c) monitoring for an abnormal fluid accumulation level based on the duration of drop, the magnitude of drop and the rate of drop of the thoracic impedance signal. - View Dependent Claims (23, 24)
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Specification