PERIPHERAL IMPEDANCE PLETHYSMOGRAPHY ELECTRODE AND SYSTEM WITH DETECTION OF ELECTRODE SPACING
First Claim
Patent Images
1. A method for peripheral impedance plethysmography, the method comprising:
- (a) attaching an electrode to an extremity of a patient, the electrode comprising two outer current electrodes and two inner voltage electrodes;
(b) applying an alternating current to the two outer current electrodes;
(c) measuring a voltage in each of the two inner voltage electrodes induced by the alternating current;
(d) automatically receiving, in a processing device, the voltage measured in step(c) and a value of a distance between the two inner voltage electrodes; and
(e) calculating, in the processing device, a volume change in the extremity in accordance with the voltage measured in step (c) and the value of the distance received in step (d).
1 Assignment
0 Petitions
Accused Products
Abstract
In a system and method for peripheral impedance plethysmography, an electrode for application to the patient'"'"'s limb includes two outer current electrodes and two inner voltage electrodes. A distance between the two inner electrodes is automatically input into an analyzing device, either as a pre-stored value or as determined automatically from the electrode. Peripheral blood flow is calculated in accordance with that distance.
32 Citations
18 Claims
-
1. A method for peripheral impedance plethysmography, the method comprising:
-
(a) attaching an electrode to an extremity of a patient, the electrode comprising two outer current electrodes and two inner voltage electrodes; (b) applying an alternating current to the two outer current electrodes; (c) measuring a voltage in each of the two inner voltage electrodes induced by the alternating current; (d) automatically receiving, in a processing device, the voltage measured in step (c) and a value of a distance between the two inner voltage electrodes; and (e) calculating, in the processing device, a volume change in the extremity in accordance with the voltage measured in step (c) and the value of the distance received in step (d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18-62. -62. (canceled)
Specification