PHYSIOLOGICAL MONITORING SYSTEM FEATURING FLOORMAT AND HANDHELD SENSOR
First Claim
1. A system for monitoring a patient suffering from heart failure, comprising:
- a floormat sensor configured to rest on a substantially horizontal surface, the floormat sensor comprising;
a weight-measuring system comprising at least one load cell and an amplifier system configured to measure a voltage from the at least one load cell and process it to determine a weight value;
an optical system comprising an optical system with at least two light sources and a photodetector configured to measure at least one photoplethysmogram waveform and process it to determine an SpO2 value;
a first impedance system comprising a first electrode configured to inject an electrical current near a foot of the patient, a second electrode configured to measure at least one signal representative of an impedance encountered by the electrical current and process it to determine a fluid value representative of the patient'"'"'s lower extremities; and
a first wireless transmitter;
a handheld sensor comprising;
a second wireless transmitter in communication with the first wireless transmitter comprised by the floormat sensor; and
a second impedance system comprising a first electrode configured to inject an electrical current near a hand of the patient, a second electrode configured to measure at least one signal representative of an impedance encountered by the electrical current and process it and the weight value received from the floormat system to determine a stroke volume value; and
a processing system configured to receive the weight value, fluid value, and SpO2 value from the floormat sensor and the stroke volume value for the handheld sensor, the processing system configured to detect trends in a set of weight values, a set of fluid values, a set of SpO2 values, and a set of stroke volume values to monitor the patient suffering from heart failure.
1 Assignment
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Accused Products
Abstract
The invention described herein is a system that features a Floormat and Handheld Sensor that operate in concert with a user'"'"'s mobile device. The Floormat resembles a conventional bathroom scale, but features an enhanced set of measurements that include pulse rate and/or heart rate, SpO2, respiratory rate, weight, body composition, and Fluids. The Handheld Sensor features an integrated form factor that fits in a user'"'"'s hand, which measures parameters such as blood pressure (e.g. systolic, diastolic, mean and pulse pressures), stroke volume, and cardiac output. Measurements of stroke volume and cardiac output require information from the Floormat (e.g., weight and body composition) to be sent to and processed by the Handheld Sensor. The Handheld Sensor can also make redundant measurements of heart rate, SpO2, and respiratory rate. Both systems transmit information through a wireless interface to a web-based system, where a clinician can analyze it to help diagnose a user.
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Citations
22 Claims
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1. A system for monitoring a patient suffering from heart failure, comprising:
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a floormat sensor configured to rest on a substantially horizontal surface, the floormat sensor comprising; a weight-measuring system comprising at least one load cell and an amplifier system configured to measure a voltage from the at least one load cell and process it to determine a weight value; an optical system comprising an optical system with at least two light sources and a photodetector configured to measure at least one photoplethysmogram waveform and process it to determine an SpO2 value; a first impedance system comprising a first electrode configured to inject an electrical current near a foot of the patient, a second electrode configured to measure at least one signal representative of an impedance encountered by the electrical current and process it to determine a fluid value representative of the patient'"'"'s lower extremities; and a first wireless transmitter; a handheld sensor comprising; a second wireless transmitter in communication with the first wireless transmitter comprised by the floormat sensor; and a second impedance system comprising a first electrode configured to inject an electrical current near a hand of the patient, a second electrode configured to measure at least one signal representative of an impedance encountered by the electrical current and process it and the weight value received from the floormat system to determine a stroke volume value; and a processing system configured to receive the weight value, fluid value, and SpO2 value from the floormat sensor and the stroke volume value for the handheld sensor, the processing system configured to detect trends in a set of weight values, a set of fluid values, a set of SpO2 values, and a set of stroke volume values to monitor the patient suffering from heart failure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification