DEVICE AND METHOD FOR ASSESSING PHYSIOLOGICAL PARAMETERS

• US 20100324437A1
• Filed: 09/12/2008
• Published: 12/23/2010
• Est. Priority Date: 09/12/2007
• Status: Active Application

• Current Assignee: Respiratory Motion, Inc. (Senzime AB (publ))
• Original Assignee: Respiratory Motion, Inc. (Senzime AB (publ))
• Inventors: Panasyuk, Svetlana, Freeman, Jenny E.
• Application Number:
  US12/677,216
• Publication Number:
  US 20100324437A1
• Time in Patent Office: Days
• US Class Current: 600/529
• CPC Class Codes: A61B 5/085 Measuring impedance of respiratory organs or lung elasticity
• CPC Class Codes: A61B 5/726 using Wavelet transforms

Abstract

This invention is directed to a device and a method for assessing a subject. The device has at least one impedance measuring element functionally connected to a programmable element, programmed to analyze an impedance measurement, and to provide an assessment of at least one respiratory parameter of the subject. In another embodiment, the device has at least one small-scale motion measuring element. In another embodiment, the device preferably has a high resolution lens, a camera, and a programmable element, which is programmed to analyze at least one physiological parameter of the subject. The physiological parameter is preferably obtained by measuring differential displacements in the camera'"'"'s field of view. The method according to the present invention involves recording a physiological parameter, analyzing the parameter to make a prediction, and providing an indication of the prediction to a user.

Claims

1. A device for assessing a subject, the device comprising:

at least one impedance measuring element functionally connected to a programmable element, programmed to analyze an impedance measurement, and to provide an assessment of at least one respiratory parameter of the subject.

2. A device according to claim 1, wherein the at least one impedance measuring element is one or more remote probes, wherein the one or more remote probes measure body wall movements, wherein the one or more remote probes are arranged as a net, vest, or array, and wherein one or more probes are placed on the thorax or abdomen of the subject.

6. The device according to claim 1, wherein the at least one respiratory parameter is selected from the group consisting of the subject'"'"'s respiratory rate, the subject'"'"'s respiratory pressure, the subject'"'"'s respiratory flow, the subject'"'"'s end tidal CO₂, the subject'"'"'s sublingual CO₂, intensity of respiration, variability of intensity of respiration, depth of respiration, variability of depth of respiration, localization of respiration, variation in localization of respiration, shape of a respiratory curve, change in shape of a respiratory curve, a respiratory curve based on inhaled volume, a respiratory curve based on exhaled volume, a respiratory curve based on inhaled pressure, a respiratory curve based on exhaled pressure, a respiratory curve based on inhaled flow, a respiratory curve based on exhaled flow, a respiratory curve based on motion of the subject'"'"'s chest as measured by imaging, a respiratory curve based on motion of the subject'"'"'s chest as measured by, contact sensors placed on the chest, and combinations thereof, and wherein the impedance measurement is based on a plurality of remote probe data sets, and wherein the programmable element is further programmed to enhance at least one of the plurality of remote probe data sets;

or to stabilize at least one of the plurality of remote probe data sets;

or to analyze each of the plurality of remote probe data sets for dynamic range and signal to noise ratio (SNR) values;

or to evaluate and remove global motion;

or to build a motion vector map to determine target displacements;

or to calculate a differential motion map.

9. The device according to claim 1, wherein the at least one respiratory parameter is selected from the group consisting of intensity of an acoustic signal, variability of an acoustic signal and is recorded for a duration of 30 seconds;

continuously;

intermittently;

up to at least 10 of the subject'"'"'s breaths;

up to at least 100 of the subject'"'"'breaths;

or up to at least 1000 of the subject'"'"'s breaths.

3-5. -5. (canceled)

7-8. -8. (canceled)

10-13. -13. (canceled)

14. A device for assessing a subject, the device comprising:

at least one small-scale motion measuring element functionally connected to a programmable element, programmed to analyze a small-scale motion measurement and to provide an assessment of the subject based on the small-scale motion measurement, wherein the at least one small-scale motion measuring element comprises a high resolution lens functionally connected to a camera, and wherein the at least one small-scald motion measuring element comprises one or more remote probes.

17. The device according to claim 14, wherein the one or more remote probes measure body wall movements, wherein the body wall movements are selected from the group consisting of movements of a thorax, a neck, an abdomen, an extremity, and combinations thereof.

19. The device according to claim 14, wherein the one or more remote probes measure impedance of the subject, and wherein the programmable element is further programmed to analyze an impedance measurement and to provide the assessment of the subject based on the small-scale motion measurement and the impedance measurement.

20. The device according to claim 14, wherein the at least one small-scale motion measuring element comprises one or more remote probes, and wherein the programmable element is further programmed to analyze one or more remote probe data sets collected from the one or more remote probes, wherein the one or more remote probe data sets comprise a measurement, selected from the group consisting of measurements of body wall movements of the subject, impedance of the subject, differential displacements of the one or more remote probes in relation to one another, and combinations thereof.

22. The device according to claim 20, wherein the programmable element is further programmed to analyze an external probe data set collected from an external probe, and wherein a combination of one or more remote probe data sets and the external probe data set provides a measurement of differential displacements of the one or more remote probes in relation to the external probe.

23. The device according to claim 22, wherein the measurement of differential displacements provides a respiratory rate of the subject.

24. The device according to claim 22, wherein the measurement of differential displacements is based on a plurality of remote probe data sets, and wherein the programmable element is further programmed to segment at least one of the plurality of remote probe data sets, or to enhance at least one of the plurality of remote probe data sets, or to stabilize at least one of the plurality of remote probe data sets, or to analyze each of the plurality of remote probe data sets for dynamic range and signal to noise ratio (SNR) values, or to evaluate and remove global motion or to calculate a differential motion map.

26. The device according to claim 22, wherein the measurement of differential displacements is based on a plurality of remote probe data sets, and wherein the programmable element is further programmed to build a motion vector map to determine target displacements.

15-16. -16. (canceled)

18. (canceled)

21. (canceled)

25. (canceled)

27. (canceled)

28. A device for assessing a subject, the device comprising:

a high resolution lens functionally connected to

a camera functionally connected to

a programmable element, programmed to analyze at least one physiological parameter obtained by measuring differential displacements in a field of view of the camera.

29. The device according to claim 28, wherein the device is mounted on a stationary mount, or on a passively gyro-stabilized platform or is handheld or is stabilized by a gyrostabilizer.

32. The device according to claim 28, wherein the device provides sensitivity to measure the differential displacements from a distance of up to 1 meter or up to 100 meters.

34. The device according to claim 28, wherein the at least one physiological parameter obtained by measuring differential displacements in a field of view of the camera is the heart rate of the subject, or the respiratory rate of the subject.

35. The device according to claim 28, wherein the measurement of differential displacements is based on a plurality of images, and wherein the programmable element is further programmed to segment at least one of the plurality of images;

or to enhance at least one of the plurality of images;

or to stabilize at least one of the plurality of images;

or to analyze each of the plurality of images for dynamic range and signal to noise ratio (SNR) values, and to adjust camera gain and exposure based on the dynamic range and SNR values;

or to evaluate and remove global image motion;

or to build a motion vector map to determine target displacements;

or to calculate a differential motion map.

36. The device according to claim 28, wherein the programmable element is further programmed to analyze one or more remote probe data sets collected from a one or more remote probes, wherein the one or more remote probe data sets comprise a measurement selected from the group consisting measurements of body wall movements of the subject;

impedance of the subject differential displacements of the one or more remote probes in relation to one another, and combinations thereof.

38. The device according to claim 36, wherein the programmable element is further programmed to analyze an external probe data set collected from an external probe, and wherein a combination of one or more remote probe data sets and the external probe data set provides a measurement of differential displacements of the one or more remote probes in relation to the external probe and optionally provides a respiratory rate of the subject.

41. The device according to claim 38, wherein the measurement of differential displacements is based on a plurality of remote probe data sets, and wherein the programmable element is further programmed to enhance at least one of the plurality of remote probe data sets;

or to stabilize at least one of the plurality of remote probe data sets;

or to analyze each of the plurality of remote probe data sets for dynamic range and signal to noise ratio (SNR) values;

or to evaluate and remove global motion;

or to build a motion vector map to determine target displacements;

or to calculate a differential motion map or to segment at least one of the plurality of remote probe data sets.

30-31. -31. (canceled)

33. (canceled)

37. (canceled)

39-40. -40. (canceled)

42-55. -55. (canceled)