SYSTEMS AND METHODS FOR NON-CONTACT MULTIPARAMETER VITAL SIGNS MONITORING, APNEA THERAPY, SWAY CANCELLATION, PATIENT IDENTIFICATION, AND SUBJECT MONITORING SENSORS

• US 20120022348A1
• Filed: 05/16/2011
• Published: 01/26/2012
• Est. Priority Date: 05/14/2010
• Status: Abandoned Application

• Current Assignee: Kai Medical, Inc.
• Original Assignee: Kai Medical, Inc.
• Inventors: Droitcour, Amy, Shing, Tommy, Vergara, Alexander, El Hourani, Charles, Nakata, Robert, Mostafanezhad, Isar, Miyasato, Scott
• Application Number:
  US13/108,795
• Publication Number:
  US 20120022348A1
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 5/0507 using microwaves or terahertz waves
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/7257 using Fourier transforms
• CPC Class Codes: A61N 1/37282 characterised by communication with experts in remote locations using a network
• CPC Class Codes: G01S 13/534 based upon amplitude or phase shift resulting from movement of objects, with reference to the surrounding clutter echo signal, e.g. non coherent MTi, clutter referenced MTi, externally coherent MTi
• CPC Class Codes: G01S 13/825 with exchange of information between interrogator and responder
• CPC Class Codes: G01S 13/87 Combinations of radar systems, e.g. primary radar and secondary radar
• CPC Class Codes: G01S 13/88 Radar or analogous systems specially adapted for specific applications electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/2886 using I/Q processing
• CPC Class Codes: G01S 7/358 using I/Q processing

Abstract

Aspects of the of the disclosure relate to a non-contact physiological motion sensor and a monitor device that can incorporate use of the Doppler effect. A continuous wave of electromagnetic radiation can be transmitted toward one or more subjects and the Doppler-shifted received signals can be digitized and/or processed subsequently to extract information related to the cardiopulmonary motion in the one or more subjects. The extracted information can be used, for example, to determine apneic events and/or to provide apnea therapy to subjects when used in conjunction with an apnea therapy device. In addition, methods of use are disclosed for sway cancellation, realization of cessation of breath, integration with multi-parameter patient monitoring systems, providing positive providing patient identification, or any combination thereof.

Claims

1. A system for treating sleep apnea, said system comprising:

a wireless sleep monitor comprising;

one or more antennas, each of the one or more antennas configured to perform one or more of the following;

receive electromagnetic radiation and transmit electromagnetic radiation;

one or more processors configured to extract information related to cardiopulmonary motion by executing at least one of a demodulation module, a non-cardiopulmonary motion detection module, and a rate estimation module;

the one or more processors further configured to detect an apneic event; and

a communications module configured to communicate with a therapeutic device, said therapeutic device configured to perform at least one action related to a sleep apnea state of the subject; and

a therapeutic device comprising a bio-feedback mechanism configured to arouse the patient when an apneic event is detected.

2. The system of claim 1, wherein the wireless sleep monitor includes a vital signs sensor configured to generate information associated with at least one of a beginning, a status, and an ending of an apneic state of the subject.

3. The system of claim 1, wherein the wireless sleep monitor comprises at least one of a pulse oximeter, a nasal air flow sensor and an oral airflow sensor.

4. The system of claim 1, wherein the therapeutic device comprises an audible alarm configured to progressively increase in volume.

5. The system of claim 1, wherein the therapeutic device comprises at least one of a wrist worn device, pillow, mattress, clothing, and collars configured to stimulate the subject.

6. The system of claim 1, wherein the therapeutic device includes one or more visual indicators configured to activate in response to a received intensity signal.

7. The system of claim 1, wherein the wireless sleep monitor is configured to communicate with the therapeutic device via one or more of the following communication protocols:

USB, Bluetooth, Zigbee, Wi-Fi, Ethernet, and Cellular.

8. A system for sensing a physiological motion, said system comprising

one or more sources for generating electromagnetic radiation, wherein the frequency of the generated electromagnetic radiation is in the radio frequency range;

one or more communications modules configured to perform at least one of the following;

transmit the generated electromagnetic radiation towards a subject and receive a radiation scattered at least by the subject;

one or more antennas, each of the one or more antennas configured to perform at least one of the following;

transmit electromagnetic radiation and receive electromagnetic radiation;

one or more processors configured to;

extract information related to cardiopulmonary motion by executing at least one of a demodulation algorithm, a non-cardiopulmonary motion detection algorithm, a rate estimation algorithm, a paradoxical breathing algorithm and a direction of arrival algorithm;

analyze the signal to obtain information corresponding to a non-cardiopulmonary motion or other signal interference;

extract a Doppler shifted signal from the scattered radiation; and

transform the Doppler shifted signal to a digitized motion signal, said digitized motion signal comprising one or more frames, wherein the one or more frames comprise time sampled quadrature values of the digitized motion signal;

isolate a signal corresponding to a physiological movement at least a portion part of the subject;

obtain information corresponding to the physiological movement of at least a portion of the subject based on the isolated signal, said information substantially separate from at least one of said non-cardiopulmonary motion and other signal interference; and

estimate one or more of the group consisting of;

non-contact, spot, interval and continuous vital signs parameters and communicate the information to an output system that is configured to perform an output action;

wherein the system is configured to perform at least one of the following;

screen a sleep disorder, diagnose a sleep disorder, and provides therapy to the sleep disorder.

9. The system of claim 8, wherein the system is configured to estimate at least one of respiration rate, heart rate, cessation of breath, and apneic events.

10. A method for treating sleep apnea, the method comprising:

detecting, via a wireless sleep monitor, an apneic event associated with a subject;

transmitting information related to the apneic event to a therapeutic device configured to arouse the subject; and

arousing the patient using the therapeutic device.

11. The method of claim 10, further comprising the steps of:

transmitting information associated with breathing of the subject from the therapeutic device to the wireless sleep monitor;

detecting, via the wireless sleep monitor, that the subject has resumed breathing within a normal range of breathing; and

in response to detecting that the subject has resumed breathing, causing a command to be sent to the therapeutic device to stop arousal.

12. The method of claim 11, further comprising causing the therapeutic device to enter an idle state in response to detecting that the subject has resumed breathing.

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24. A system for integrated monitoring of physiological parameters of a subject, the system comprising:

one or more non-contact vital sign sensors configured to;

generate a radio frequency (RF) signal;

transmit the generated RF signal towards a subject;

receive radiation scattered by the subject;

extract a Doppler shifted signal from the scattered radiation; and

derive information corresponding to physiological movement of at least a portion of the subject that is substantially separate from non-cardiopulmonary motion; and

at least one of a separate contact based patient monitoring device and a separate contact based vital signs measurement device.

25. The system of claim 24, further comprising a wireless sleep monitor including:

one or more antennas, each of the one or more antennas configured to perform one or more of the following;

receive electromagnetic radiation and transmit electromagnetic radiation; and

one or more processors configured to extract information related to cardiopulmonary motion by executing at least one of a demodulation module, a non-cardiopulmonary motion detection module, and a rate estimation module;

the one or more processors further configured to detect a apneic event.

26. The system of claim 24, wherein the one or more non-contact vital sign sensors operate as a standalone unit that is capable of operating with at least one of the patient monitoring device and the vital sign measurement device.

27. The system of claim 24, wherein the one or more non-contact vital sign sensors are integrated into the at least one of the separate contact based patient monitoring device and the separate contact based vital signs measurement device.

28. The system of claim 24, wherein the one or more non-contact vital sign sensors communicate with the at least one of the separate contact based patient monitoring device and the separate contact based vital signs measurement device via at least one of a USB cable, a custom cable, Wi-Fi, Bluetooth, Zigbee, and a cellular network.

29. The system of claim 24, wherein the one or more non-contact vital sign sensors are configured to stream raw data to one or more central computing devices, and wherein the one or more central computing devices are configured to processes the raw data.

30. The system of claim 24, wherein the one or more non-contact vital sign sensors are configured to communicate with one or more of a central nurses'"'"' station, a personal digital assistant, a cellular phone, a computer note pad, a computer notebook, and a doctor'"'"'s office.

31. The system of claim 24 wherein the one or more non-contact vital sign sensors are configured to be controllable by one or more of a central nurses'"'"' station, a personal digital assistant, a cellular phone, a computer note pad, a computer notebook, and a doctor'"'"'s office.

32. The system of claim 24 wherein a radio used for the one or more non-contact vital sign sensors is used for communication with at least one of other local devices and central systems.

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