Chest non-invasive blood pressure detecting probe based on pulse wave transit time and device thereof

Patent metadata

Field	Value
Publication number	US-2022202300-A1
Application number	US-202017606305-A
Country	US
Kind code	A1
Filing date	Jul 3, 2020
Priority date	Jul 3, 2019
Publication date	Jun 30, 2022
Grant date	—

Abstract

A chest non-invasive blood pressure detecting probe based on pulse wave transit time and a device thereof are provided. The detecting probe is attached closely to the skin surface of the human chest, and includes a probe body and a patch, which are of split type. The patch is attached and mounted, in a male-female fastener form, on the probe body for use, so that when the patch needs to be replaced, the patch is directly removed and replaced with a new patch, which is convenient for use. The detecting probe is portable and used for continuous dynamic real-time acquiring of the human aortic blood pressure, which is free from the constraints of lead wires, small and comfortable, and high in measuring precision.

First claim

1 . A chest non-invasive blood pressure detecting probe based on pulse wave transit time, the detecting probe comprising a shell, a patch and an elastic component; wherein
a bottom of the shell is provided with a flexible bottom plate, and a surface of the flexible bottom plate is provided with a plurality of electrode female fasteners, a photoelectric sensor module and an acceleration sensor; the electrode female fasteners and the acceleration sensor are closely attached on the surface of the flexible bottom plate; the photoelectric sensor module is fixed on the elastic component; the elastic component comprises two fixed telescopic rod and a spring conductive wire; the two fixed telescopic rods are fixed at a bottom of the photoelectric sensor module; the flexible bottom plate is provided with slotted holes; the two fixed telescopic rods are inserted into the slotted holes to form a movable pair capable of telescopic adjustment; the bottom of the photoelectric sensor module is connected with one end of the spring conductive wire, and another end of the spring conductive wire is supported on the flexible bottom plate; the photoelectric sensor module protrude from the surface of the flexible bottom plate without external pressure; a plurality of electrode assemblies are provided in the patch; the electrode assemblies comprise respective electrode sheets and respective electrode male fasteners; the patch has a same external contour as the surface of the flexible bottom plate, and a middle portion of the patch is provided with a hollow area; the photoelectric sensor module is placed in the hollow area, and the photoelectric sensor module is connected with the flexible bottom plate through the two fixed telescopic rods inserted into the slotted holes; the electrode male fasteners of the electrode assemblies are fixedly embedded on a surface of the patch, the electrode male fasteners and the electrode female fasteners are arranged in one-to-one correspondence, and the electrode male fasteners and the electrode female fasteners are snapped and fixed in pairs; a surface of each of the electrode male fasteners is closely attached with a corresponding one of the electrode sheets.

2 . The chest non-invasive blood pressure detecting probe based on pulse wave transit time according to claim 1 , wherein the electrode assemblies are arranged in pairs, the electrode assemblies comprise two setting manners that are double electrodes and four electrodes; each pair of the electrode assemblies is symmetrically arranged with the photoelectric sensor module as a center.

3 . The chest non-invasive blood pressure detecting probe based on pulse wave transit time according to claim 2 , wherein a reference electrode is provided on the patch.

4 . The chest non-invasive blood pressure detecting probe based on pulse wave transit time according to claim 1 , wherein the electrode sheets are made of Ag/AgCl, metal or fabric electrodes; a gel layer is coated on a surface of each of the electrode sheets.

5 . The chest non-invasive blood pressure detecting probe based on pulse wave transit time according to claim 1 , wherein the photoelectric sensor module comprises at least one photoelectric receiving tube and at least one LED array; the at least one photoelectric receiving tube is used for receiving light beams emitted by the at least one LED array and reflected by human skin.

6 . The chest non-invasive blood pressure detecting probe based on pulse wave transit time according to claim 1 , wherein a cavity for accommodating a detection circuit is provided between the shell and the flexible bottom plate.

7 . The chest non-invasive blood pressure detecting probe based on pulse wave transit time according to claim 1 , wherein the shell and/or the flexible bottom plate are made of polydimethylsiloxane.

8 . A chest non-invasive blood pressure detecting device based on pulse wave transit time, the chest non-invasive blood pressure detecting device comprising the chest no-invasive blood pressure detecting probe based on pulse wave transit time, the chest non-invasive blood pressure detecting probe comprising a shell, a patch and an elastic component; wherein
a bottom of the shell is provided with a flexible bottom plate, and a surface of the flexible bottom plate is provided with a plurality of electrode female fasteners, a photoelectric sensor module and an acceleration sensor; the electrode female fasteners and the acceleration sensor are closely attached on the surface of the flexible bottom plate; the photoelectric sensor module is fixed on the elastic component; the elastic component comprises two fixed telescopic rod and a spring conductive wire; the two fixed telescopic rods are fixed at a bottom of the photoelectric sensor module; the flexible bottom plate is provided with slotted holes; the two fixed telescopic rods are inserted into the slotted holes to form a movable pair capable of telescopic adjustment; the bottom of the photoelectric sensor module is connected with one end of the spring conductive wire, and another end of the spring conductive wire is supported on the flexible bottom plate; the photoelectric sensor module protrudes from the surface of the flexible bottom plate without external pressure; a plurality of electrode assemblies are provided in the patch; the electrode assemblies comprise respective electrode sheets and respective electrode male fasteners; the patch has a same external contour as the surface of the flexible bottom plate, and a middle portion of the patch is provided with a hollow area; the photoelectric sensor module is placed in the hollow area, and the photoelectric sensor module is connected with the flexible bottom plate through the two fixed telescopic rods inserted into the slotted holes; the electrode male fasteners of the electrode assemblies are fixedly embedded on a surface of the patch, the electrode male fasteners and the electrode female fasteners are arranged in one-to-one correspondence, and the electrode male fasteners and the electrode female fasteners are snapped and fixed in pairs; a surface of each of the electrode male fasteners is closely attached with a corresponding one of the electrode sheets; wherein the detecting device further comprises an ECG/cardiac impedance signal detector, a pulse signal detector, an acceleration body plethysmography signal detector, a main control/Bluetooth unit, a power supply management unit and a storage unit; the ECG/cardiac impedance signal detector comprises an ECG signal analog front end and the electrode assemblies arranged in pairs; the electrode assemblies are electrically connected with the ECG signal analog front end; the electrode sheets on the electrode assemblies are used for picking up ECG signals and ICG signals of a human body surface; the ECG signals and the ICG signals are processed and converted by the ECG signal analog front end; the pulse signal detector comprises a pulse analog front end and the photoelectric sensor module; the photoelectric sensor module is electrically connected with the pulse analog front end; the photoelectric sensor module is configured for picking up human pulse and blood flow volume signals based on a photoplethysmographic method, and the human pulse and blood flow volume signals are processed and converted by the pulse analog front end; the acceleration body plethysmography signal detector comprises an APG analog front end and the acceleration sensor; the acceleration sensor is electrically connected with the APG analog front end; the acceleration sensor is used for acquiring APG signals; the APG signals are processed and converted by the APG analog front end; the main control/Bluetooth unit comprises a main control chip; the main control chip comprises

Assignees

• Univ Zhejiang

Inventors

• Zhou Congcong
• Zhang Yiming
• Ye Xuesong

Classifications

• A61B5/0059 Primary

  using light, e.g. diagnosis by transillumination, diascopy, fluorescence (photoacoustic A61B5/0093; optical measurement of heart rate A61B5/02416; optical measurement of blood flow A61B5/0261; optical measurement of analytes A61B5/1455) · CPC title

• A61B2503/10

  Athletes · CPC title

• A61B5/27

  Conductive fabrics or textiles · CPC title

• A61B5/1102

  Ballistocardiography · CPC title

• A61B5/0295

  using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography · CPC title