FLOORMAT PHYSIOLOGICAL SENSOR
First Claim
1. A system for measuring a blood pressure value from a patient, comprising:
- a base comprising a bottom surface configured to rest on or near a substantially horizontal surface, and a top surface configured to receive at least one of the patient'"'"'s feet;
a pressure-delivery system connected to the top surface and comprising an opening which covers a portion of at least one of the patient'"'"'s feet when they are in contact with the top surface, the pressure-delivery system comprising a flexible member configured to apply pressure to a portion of at least one of the patient'"'"'s feet, and a pressure sensor configured to measure a first set of signals representative of pressure applied to the portion of at least one of the patient'"'"'s feet;
an optical system connected to the top surface and comprising at least one light source that emits optical radiation, and a photodetector, the photodetector configured to receive the optical radiation after it irradiates a portion of the patient'"'"'s feet to generate a second set of signals representative of a photoplethysmogram from the patient; and
a processing system in electrical contact with the pressure sensor and optical system, and configured to;
1) receive the first set of signals from the pressure-delivery system and convert them into a set of pressure values;
2) receive the second set of signals from the optical system and convert them into a set of pulsatile signals; and
3) collectively analyze the set of pressure values and the set of pulsatile signals to determine the blood pressure value.
1 Assignment
0 Petitions
Accused Products
Abstract
A stand-on physiological sensor (e.g. floormat) measures vital signs and various hemodynamic parameters, including blood pressure and ECG waveforms. The sensor is similar in configuration to a common bathroom scale and includes electrodes that take electrical measurements from a patient'"'"'s feet to generate bioimpedance waveforms, which are analyzed digitally to extract various other parameters, as well as a cuff-type blood pressure system that takes physical blood pressure measurements at one of the patient'"'"'s feet. Blood pressure can also be calculated/derived from the bioimpedance waveforms. Measured parameters are transmitted wirelessly to facilitate remote monitoring of the patient for heart failure, chronic heart failure, end-stage renal disease, cardiac arrhythmias, and other degenerative diseases.
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Citations
41 Claims
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1. A system for measuring a blood pressure value from a patient, comprising:
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a base comprising a bottom surface configured to rest on or near a substantially horizontal surface, and a top surface configured to receive at least one of the patient'"'"'s feet; a pressure-delivery system connected to the top surface and comprising an opening which covers a portion of at least one of the patient'"'"'s feet when they are in contact with the top surface, the pressure-delivery system comprising a flexible member configured to apply pressure to a portion of at least one of the patient'"'"'s feet, and a pressure sensor configured to measure a first set of signals representative of pressure applied to the portion of at least one of the patient'"'"'s feet; an optical system connected to the top surface and comprising at least one light source that emits optical radiation, and a photodetector, the photodetector configured to receive the optical radiation after it irradiates a portion of the patient'"'"'s feet to generate a second set of signals representative of a photoplethysmogram from the patient; and a processing system in electrical contact with the pressure sensor and optical system, and configured to;
1) receive the first set of signals from the pressure-delivery system and convert them into a set of pressure values;
2) receive the second set of signals from the optical system and convert them into a set of pulsatile signals; and
3) collectively analyze the set of pressure values and the set of pulsatile signals to determine the blood pressure value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for measuring a blood pressure value from a patient, comprising:
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a base comprising a bottom surface configured to rest on or near a substantially horizontal surface, and a top surface configured to receive at least one of the patient'"'"'s feet; a pressure-delivery system connected to the top surface and comprising an opening which covers a portion of at least one of the patient'"'"'s feet when they are in contact with the top surface, the pressure-delivery system comprising a flexible member configured to apply pressure to a portion of at least one of the patient'"'"'s feet, and a pressure sensor configured to measure a first set of signals representative of pressure applied to the portion of at least one of the patient'"'"'s feet; an optical system connected to the top surface and comprising at least one light source that emits optical radiation, and a photodetector, the photodetector configured to receive the optical radiation after it irradiates a portion of the patient'"'"'s feet to generate a second set of signals representative of a photoplethysmogram from the patient; a weight-measuring system connected to the top surface, the weight-measuring system comprising an electrical system that measures a set of voltages that correlates with a force applied to the top surface; and a processing system in electrical contact with the pressure sensor, and configured to;
1) receive the first set of signals from the pressure-delivery system and convert them into a set of pressure values;
2) receive the second set of signals from the optical system and convert them into a set of pulsatile signals;
3) collectively analyze the set of pressure values and the set of pulsatile signals to determine the blood pressure value. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification