IL296760A - A system for measuring physiological parameters and pressure which is applied to the surface of the system - Google Patents

A system for measuring physiological parameters and pressure which is applied to the surface of the system

Info

Publication number
IL296760A
IL296760A IL296760A IL29676022A IL296760A IL 296760 A IL296760 A IL 296760A IL 296760 A IL296760 A IL 296760A IL 29676022 A IL29676022 A IL 29676022A IL 296760 A IL296760 A IL 296760A
Authority
IL
Israel
Prior art keywords
contact surface
sensor
pressure
internal volume
change
Prior art date
Application number
IL296760A
Other languages
Hebrew (he)
Other versions
IL296760B2 (en
IL296760B1 (en
Original Assignee
Cardiacsense Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cardiacsense Ltd filed Critical Cardiacsense Ltd
Priority to IL296760A priority Critical patent/IL296760B2/en
Priority to PCT/IL2023/051027 priority patent/WO2024062486A1/en
Publication of IL296760A publication Critical patent/IL296760A/en
Publication of IL296760B1 publication Critical patent/IL296760B1/en
Publication of IL296760B2 publication Critical patent/IL296760B2/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6843—Monitoring or controlling sensor contact pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02416—Measuring pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02438—Measuring pulse rate or heart rate with portable devices, e.g. worn by the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02444—Details of sensor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
    • A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb using a particular sensing technique
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/681—Wristwatch-type devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6824—Arm or wrist
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0297—Constructional arrangements for removing other types of optical noise or for performing calibration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0247—Pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
    • A61B2562/164—Details of sensor housings or probes; Details of structural supports for sensors the sensor is mounted in or on a conformable substrate or carrier
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
    • A61B2562/168—Fluid filled sensor housings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A61B5/02055—Simultaneously evaluating both cardiovascular condition and temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Measuring devices for evaluating the respiratory organs
    • A61B5/0816—Measuring devices for examining respiratory frequency

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Physiology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Description

SYSTEM FOR MEASURING PHYSIOLOGICAL PARAMETERS AND A PRESSURE APPLIED ON A SURFACE THEREOF TECHNOLOGICAL FIELD The present disclosure is in the field of physiological parameters measurement devices.
BACKGROUND ART References considered to be relevant as background to the presently disclosed subject matter are listed below: - WO 2019/2157 Acknowledgement of the above references herein is not to be inferred as meaning that these are in any way relevant to the patentability of the presently disclosed subject matter.
GENERAL DESCRIPTION The present disclosure provides a system that allows compensation of sensed values of physiological parameters obtained during contact of the system with the sensed region, typically a skin of a subject, according to the pressure extent applied to the system during the contact of the sensed region. This is performed by sensing a change of pressure in a sealed volume of the system that is affected by the amount of pressure applied to the system. Therefore, an aspect of the present disclosure provides a system for measuring physiological parameters and a pressure applied on a surface thereof. The system comprises an enclosure confining an internal volume sealed for fluid exchange, in particular gas exchange, between it and the ambient surrounding. The volume is sealed for fluids, namely gas and liquid, although there can be a minor and negligible exchange of gases between the internal volume and the ambient surrounding. The enclosure is defined by a housing portion and a contact surface coupled to the housing, wherein pressure applied on the contact surface results in a volume change of the internal volume and therefore, pressure changes due to the fact that the internal volume is sealed. A gas pressure sensor is disposed within the internal volume, calibrated to a certain reference value, and configured to sense a change of pressure in the internal volume due to the change of the volume in response to pressure applied on the contact surface. One or more physiological sensors are directly or indirectly coupled to the contact surface and configured to sense physiological parameters from a subject contacting the contact surface, Typically, a skin portion of the subject engages the contact surface, and the physiological sensors sense physiological parameters of the subject through the skin. The sensing of the physiological parameters can be made through the contact surface, for example by a PPG sensor that emits and receive light that propagates through the contact surface or directly from the skin such as an electrocardiography (ECG) sensor or galvanic skin response (GSR) sensor. It is to be noted that any combination of the described embodiments with respect to any aspect of this present disclosure is applicable. In other words, any aspect of the present disclosure can be defined by any combination of the described embodiments. In some embodiments of the system, the gas pressure sensor is a barometric sensor. In some embodiments of the system, the contact surface is coupled to the housing portion via a flexible member, the flexible member is characterized by flexibility properties greater than the housing and the contact surface. Namely, the flexible member is more flexible than the other parts of the enclosure and it allows the contact surface to move with respect to the housing along at least one axis. The enclosure is defined by the housing portion, the contact surface, and the flexible member. In some embodiments of the system, the contact surface or a contact surface member comprises the contact surface has at least a portion being reversibly deformable such that pressure applied thereon causes a reversible deformation of the contact surface and resulting in said volume change of the internal volume. In some embodiments of the system, the one or more physiological sensors are selected from any one of: ECG sensor, PPG sensor, temperature sensor, galvanic skin response sensor or any combination thereof. In some embodiments, the system further comprises a processing circuitry configured to receive barometric data indicative of pressure change within the internal volume and process it to determine pressure data indicative of pressure applied on the contact surface. The barometric data can be the raw data that is derived from the barometric sensor or any type of processed data of the signals derived from the barometric sensor. In some embodiments of the system, the processing circuitry is configured to (i) receive sensed data obtained by the one or more physiological sensors and (ii) apply correction function, being dependent on the barometric data, on the sensed data to correct sensed values determined from the one or more physiological sensors. In some embodiments of the system, said correction function cancels the sensed values upon determination of pressure data exceeding a certain threshold. In some embodiments of the system, the barometric sensor is configured to perform calibration upon receiving a calibration signal. The calibration comprises setting the existing pressure value in the internal volume at the time of receiving said calibration signal as a pressure reference value. Namely, that from the time of calibration until the next calibration process, the change of pressure within the internal volume will be measured from the new pressure reference value. In some embodiments of the system, the calibration signal is provided when the system is coupled to a charging station for charging the system and the skin contact surface is in a neutral position with no pressure applied thereon. In some embodiments of the system, the calibration signal is provided periodically, namely after a certain constant or about constant amount of time. Yet another aspect of the present disclosure provides a medical watch comprising the system of any one of the above-described embodiments or any combination thereof.
BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the subject matter that is disclosed herein and to exemplify how it may be carried out in practice, embodiments will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which: Fig. 1 is a schematic illustration of a cross-sectional view of a non-limiting example of an embodiment of the system according to an aspect of the present disclosure, in which the contact surface member is deformable. Fig. 2 is a schematic illustration of a cross-sectional view of a non-limiting example of an embodiment of the system according to an aspect of the present disclosure, in which the contact surface member is displaceable due to being coupled to the housing portion via a flexible member.

Claims (13)

- 6 - CLAIMS:
1. A system for measuring physiological parameters and a pressure applied on a surface thereof, comprising: an enclosure confining an internal volume sealed for fluid exchange between it and the ambient surrounding, said enclosure is defined by a housing portion and a contact surface coupled to the housing portion, wherein pressure applied on the contact surface results in a volume change of the internal volume; a gas pressure sensor disposed within the internal volume and is configured to sense a change of pressure in the internal volume resulting from said volume change; one or more physiological sensors directly or indirectly coupled to the contact surface and configured to sense physiological parameters from a subject contacting the contact surface.
2. The system of claim 1, wherein the contact surface is coupled to the housing portion via a flexible member, the flexible member is characterized by flexibility properties greater than the housing portion and the contact surface, wherein the enclosure is further defined by the flexible member.
3. The system of claim 1 or 2, wherein the contact surface or a contact surface member comprises the contact surface has at least a portion being reversibly deformable such that pressure applied thereon causes a reversible deformation of the contact surface and resulting in said volume change of the internal volume.
4. The system of any one of claims 1-3, wherein said one or more physiological sensors are selected from any one of: ECG sensor, PPG sensor, temperature sensor, galvanic skin response sensor or any combination thereof.
5. The system of any one of claims 1-4, comprising a processing circuitry configured to receive gas pressure data indicative of pressure change within the internal volume and process it to determine pressure data indicative of pressure applied on the contact surface.
6. The system of claim 5, wherein the processing circuitry is configured to (i) receive sensed data obtained by the one or more physiological sensors and (ii) apply correction function, being dependent on the gas pressure data, on the sensed data to correct sensed values determined from the one or more physiological sensors.
7. The system of claim 6, wherein said correction function cancels the sensed values upon determination of pressure data exceeding a certain threshold. - 7 -
8. The system of any one of claims 1-7, wherein the gas pressure sensor is configured to perform calibration upon receiving a calibration signal, said calibration comprises setting the existing pressure value in the internal volume at the time of receiving said calibration signal as a pressure reference value.
9. The system of claim 8, wherein the calibration signal is provided when the system is coupled to a charging station for charging the system.
10. The system of claim 8, wherein the calibration signal is provided periodically.
11. The system of any one of claims 1-10, wherein the gas pressure sensor is a barometric sensor.
12. A medical watch comprising the system of any one of claims 1-10.
13. A system for measuring physiological parameters and a pressure applied on a surface thereof, comprising: an enclosure confining an internal volume sealed for fluid exchange between it and the ambient surrounding, said enclosure is defined by a housing portion and a contact surface coupled to the housing portion, wherein pressure applied on the contact surface results in a volume change of the internal volume; a gas pressure sensor disposed within the internal volume and is configured to sense a change of pressure in the internal volume resulting from said volume change; one or more physiological sensors directly or indirectly coupled to the contact surface and configured to sense physiological parameters from a subject contacting the contact surface; wherein said gas pressure sensor is a barometric sensor; wherein said one or more physiological sensors are selected from any one of: ECG sensor, PPG sensor, temperature sensor, galvanic skin response sensor or any combination thereof; and wherein the contact surface is a part of a contact surface member that accommodates said one or more physiological sensors.
IL296760A 2022-09-22 2022-09-22 A system for measuring physiological parameters and pressure which is applied to the surface of the system IL296760B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IL296760A IL296760B2 (en) 2022-09-22 2022-09-22 A system for measuring physiological parameters and pressure which is applied to the surface of the system
PCT/IL2023/051027 WO2024062486A1 (en) 2022-09-22 2023-09-21 System for measuring physiological parameters and a pressure applied on a surface thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL296760A IL296760B2 (en) 2022-09-22 2022-09-22 A system for measuring physiological parameters and pressure which is applied to the surface of the system

Publications (3)

Publication Number Publication Date
IL296760A true IL296760A (en) 2024-01-01
IL296760B1 IL296760B1 (en) 2024-01-01
IL296760B2 IL296760B2 (en) 2024-05-01

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Application Number Title Priority Date Filing Date
IL296760A IL296760B2 (en) 2022-09-22 2022-09-22 A system for measuring physiological parameters and pressure which is applied to the surface of the system

Country Status (2)

Country Link
IL (1) IL296760B2 (en)
WO (1) WO2024062486A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180146870A1 (en) * 2015-06-02 2018-05-31 CardiacSense Ltd. Sensing at least one biological parameter, e.g., heart rate or heart rate variability of a subject
WO2020172152A1 (en) * 2019-02-20 2020-08-27 Ganchi Parham A Breast-measuring device
US10849555B1 (en) * 2015-09-29 2020-12-01 Apple Inc. Devices and systems for correcting errors in blood pressure measurements

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180146870A1 (en) * 2015-06-02 2018-05-31 CardiacSense Ltd. Sensing at least one biological parameter, e.g., heart rate or heart rate variability of a subject
US10849555B1 (en) * 2015-09-29 2020-12-01 Apple Inc. Devices and systems for correcting errors in blood pressure measurements
WO2020172152A1 (en) * 2019-02-20 2020-08-27 Ganchi Parham A Breast-measuring device

Also Published As

Publication number Publication date
IL296760B2 (en) 2024-05-01
WO2024062486A1 (en) 2024-03-28
IL296760B1 (en) 2024-01-01

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