Water retention monitoring
First Claim
1. A device for monitoring heart failure by measuring the increase in water retention in the body tissue of the patient, said measuring performed by measuring the electrical properties of said tissue in a manner which compensates for tissue thickness.
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Accused Products
Abstract
The water contents of the tissue is measured by placing part of the body, such as the arm or ankle, between two capacitive electrodes and calculating the water contents based on the dielectric properties of the tissue. The device is shaped like a bracelet or hinged clip. When placed over part of the body the hinge position is measured to normalize the reading for the tissue thickness. The device can alert the user of water retention, and can also contact the physician directly via a wireless link.
11 Citations
17 Claims
- 1. A device for monitoring heart failure by measuring the increase in water retention in the body tissue of the patient, said measuring performed by measuring the electrical properties of said tissue in a manner which compensates for tissue thickness.
- 2. A device for monitoring heart failure by measuring the increase in water retention in a patient'"'"'s tissue, said device measuring the dielectric constant of the tissue by placing the tissue between two electrodes and compensating for the tissue thickness.
- 3. A device for monitoring heart failure by measuring the increase in water retention in a patient'"'"'s tissue, said device sensing the change in the impedance of the tissue by placing the tissue between to electrodes and comparing the current impedance to a previously recorded impedance.
Specification