Methods and systems for monitoring intrabody tissues

• US 10,506,943 B2
• Filed: 02/20/2017
• Issued: 12/17/2019
• Est. Priority Date: 09/05/2007
• Status: Active Grant

• Current Assignee: Sensible Medical Innovations Ltd.
• Original Assignee: Sensible Medical Innovations Ltd.
• Inventors: Kochba, Ilan, Rappaport, Dan, Saroka, Amir, Bergida, Shlomi, Mizrahi, Nadav, Ronen, Amir
• Primary Examiner(s): Fernandez, Katherine L
• Assistant Examiner(s): Kellogg, Michael S
• Application Number:
  US15/436,902
• Publication Number:
  US 20170156626A1
• Time in Patent Office: 1,030 Days
• Field of Search: None
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/0075 by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy A61B5/0071 takes precedence
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• 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 5/0507 using microwaves or terahertz waves
• CPC Class Codes: A61B 5/4076 Diagnosing or monitoring particular conditions of the nervous system A61B5/4821, A61B5/4824 take precedence
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61B 5/4504 Bones A61B5/4547 takes precedence
• CPC Class Codes: A61B 5/4842 Monitoring progression or stage of a disease
• CPC Class Codes: A61B 5/4848 Monitoring or testing the effects of treatment, e.g. of medication
• CPC Class Codes: A61B 5/4869 Determining body composition
• CPC Class Codes: A61B 5/72 Signal processing specially adapted for physiological signals or for diagnostic purposes character recognition, recognising digital ink, document-oriented image-based pattern recognition G06V30/00; recognition or understanding of postal images G06V30/424
• CPC Class Codes: A61B 5/7246 using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence

Abstract

A method for monitoring an intrabody region of a patient. The method comprises intercepting electromagnetic (EM) radiation from the intrabody region in a plurality of EM radiation sessions during a period of at least 6 hours, calculating a dielectric related change of the intrabody region by analyzing respective the intercepted EM radiation, detecting a physiological pattern according to said dielectric related change and outputting a notification indicating the physiological pattern.

Claims

1. A wearable monitoring device for monitoring an intrabody region during a stress ergometry test for detecting a pathological state in a patient, comprising:

at least one probe comprising at least one transducer configured for transmitting to and intercepting electromagnetic (EM) radiation from at least one intrabody region of the lungs of the patient while said patient is performing the stress examination test;

at least one hardware processor in communication with the at least one probe, and in communication with the at least one of a communication interface and a display;

a non-transitory memory having stored thereon a code for execution by the at least one hardware processor of the wearable monitoring device, comprising;

code for detecting a breathing cycle of the patient according to an analysis of the intercepted EM radiation transmitted by the at least one probe;

code for calculating a dielectric related change of the at least one intrabody region by analyzing respective said intercepted EM radiation transmitted by the at least one probe in view of a differential signal computed according to the detected breathing cycle; and

code for detecting a change in measured fluid in the lungs during said stress examination test according to said dielectric related change,

wherein said change in measured fluid is detected relative to a baseline level of fluid within the at least one intrabody tissue, wherein the baseline level of fluid is measured during a calibration stage performed before monitoring of the stress examination test is initiated; and

code for outputting via at least one of the communication interface and the display, a notification indicative of said change in measured fluid in the lungs during said stress examination test, wherein said change in measured fluid in the lungs is indicative of the pathological state of the patient with higher sensitivity and/or specificity in comparison to stress examination test alone.

2. The wearable monitoring device of claim 1, wherein said detecting a change in measured fluid in the lungs includes:

code for estimating an expected signal of intercepted electromagnetic radiation, and

code for matching said estimated signal to a detected signal of intercepted electromagnetic radiation, thereby detecting said change in measured fluid in the lungs.

3. The wearable monitoring device of claim 1,

wherein said non-transitory memory further has stored thereon code for computing a medical index of interest by comparing the dielectric related change of the at least one intrabody region to estimated values of dielectric related change during the stress examination test.

4. The wearable monitoring device of claim 1, wherein the at least one transducer of said at least one probe, said non-transitory memory and said at least one hardware processor are contained in a housing designed for being disposed on the body of the patient performing the stress examination test.

5. The wearable monitoring device of claim 1, wherein said at least one probe is arranged to intercept EM radiation which passes through the intrabody region.

6. The wearable monitoring device of claim 1, wherein said dielectric related change is analyzed to detect an indication of a computed expected change in a plurality of properties of said intrabody region.

7. The wearable monitoring device of claim 6, wherein said plurality of properties of said intrabody region indicated by the calculated dielectric related change comprises a member of a group consisting of a density, a size, a shape, and a concentration of fluids.

8. The wearable monitoring device of claim 1, further comprising code for diagnosing at least one coronary abnormality based on the detected change in measured fluid in the lungs during the stress examination test.

9. The wearable monitoring device of claim 1, wherein the differential signal is analyzed in relation to expected changes in the dielectric coefficient of the at least one intrabody region during the detected breathing cycle.

10. The wearable monitoring device of claim 9, wherein the expected changes in the dielectric coefficient are obtained from a reference chest wall model adjusted according to the detected breathing cycle.

11. The wearable monitoring device of claim 1, wherein the dielectric related change of the at least one intrabody region is calculated at least according to changes of amplitude of the differential signal.

12. The wearable monitoring device of claim 1, wherein the differential signal is computed as the differences between intercepted EM radiation received during inhalation and intercepted EM radiation received during exhalation of the detected breathing cycle.

13. A method for monitoring an intrabody region during a stress ergometry test for detecting a pathological state in a patient, comprising:

intercepting electromagnetic (EM) radiation transmitted by at least one probe from the at least one intrabody region of the patient performing the stress examination test in at least one EM radiation session;

detecting a breathing cycle of the patient according to an analysis of the intercepted EM radiation transmitted by the at least one probe;

calculating a dielectric related change of the at least one intrabody region by analyzing respective said intercepted EM radiation transmitted by the at least one probe in view of a differential signal computed according to the detected breathing cycle;

detecting a change in measured fluid in the lungs during said stress examination test according to said dielectric related change,

wherein said change in measured fluid is detected relative to a baseline level of fluid within the at least one intrabody tissue, wherein the baseline level of fluid is measured during a calibration stage performed before monitoring of the stress examination test is initiated; and

outputting a notification indicating said change in measured fluid in the lungs during said stress examination test, wherein said change in measured fluid in the lungs is indicative of the pathological state of the patient with higher sensitivity and/or specificity in comparison to said stress examination test alone.

14. The method of claim 13, further comprising diagnosing at least one coronary abnormality based on the detected change in measured fluid in the lungs during the stress examination test.