APPARATUS AND METHODS FOR REMOTE MONITORING OF PHYSIOLOGICAL PARAMETERS

• US 20160022145A1
• Filed: 03/12/2014
• Published: 01/28/2016
• Est. Priority Date: 03/15/2013
• Status: Abandoned Application

• Current Assignee: Mostov, Kirill
• Original Assignee: Mostov, Kirill
• Inventors: Mostov, Kirill
• Application Number:
  US14/775,617
• Publication Number:
  US 20160022145A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/0026 characterised by the transmission medium
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/05 Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves impedance plethysmography A61B5/0295; measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/1135 by monitoring thoracic expansion
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/7228 Signal modulation applied to the input signal sent to patient or subject; demodulation to recover the physiological signal modulation H03C

Abstract

The invention relates to an apparatus for remote monitoring physiological parameters, comprising: a radar transmitter for transmitting radio frequency signal towards a human body; and a radar receiver for receiving frequency signals reflected from a human body. An accelerometer is adapted to be placed on a human body, and a signal processor, which is configured for extracting and processing physiological parameters of the at least one human body from the inputted signals of the receiver and accelerometer. A specific embodiment of the apparatus relates to a radar and a wireless communication channel controller for receiving data from patients. Patients have accelerometers attached to their bodies and the patients can be without motion or move freely within a room. For each patient, the device determines breathing and pulse rate; cardiac performance and the patient identification by automatically setting up a match between the determined parameters and each patient'"'"'s ID.

Claims

1. An apparatus for remote monitoring physiological parameters, comprising:

a radar transmitter having a transmitting antenna for radiation of a radio frequency signal towards at least one human body, and at least one radar receiver for receiving a signal reflected from the at least one human body, the radar receiver comprising a receiving antenna positioned at a predefined distance from the transmitting antenna, the apparatus further comprising at least one accelerometer adapted to be placed on a human body, and a signal processor, wherein respective outputs of the radar receiver and accelerometer are connected to the input of the signal processor which is configured for extracting and processing physiological parameters of the at least one human body from the inputted signals of the receiver and accelerometer.

2. The apparatus of claim 1, wherein the accelerometer contains a wireless transmitter,the signal processor contains a wireless receiver, and the output of the accelerometer is connected to the input of the signal processor through a wireless communication channel.

3. The apparatus of claim 1, further comprising at least two radar receivers, wherein their respective receiving antennae are positioned at a predetermined distance from one another and from the transmitting antenna.

4. The apparatus of claim 1, wherein the radar receiver comprises a clocked amplifier having its input connected to the receiving antenna.

5. The apparatus of claim 1, wherein the transmitter is adapted to produce frequency modulated signals in the form of a train of pulses with a predefined delay between pulses.

6. The apparatus of claim 5, wherein the pulses have duration of half a period of modulation frequency variation.

7. The apparatus of claim 1, wherein the signal processor has a control output, which is connected to the digital input of a digital-to-analog converter, the radar transmitter has a frequency deviation control input, and the analog output of the digital-to-analog converter is connected to the frequency deviation control input of the radar transmitter.

8. A method for determination of the distance from each receiving antenna to a body using the apparatus of claim 1, wherein the emitted frequency and the received frequency are measured at the same moment, the difference between these frequencies is multiplied to the modulation frequency sweep period, and divided by the modulation frequency swing, and the result is scaled by the multiplication to one fourth of the speed of light in the air.

9. A method for determination of the azimuth to each body of the apparatus of claim 1, wherein a phase shift is measured between the harmonic components selected for the same human body, received from two receiver channels;

and the required azimuth is obtained as the arc sine of the said phase shift multiplied to the radar wavelength and divided by the distance between the receiving antennae.