Portable device and blood pressure measurement method

Patent metadata

Field	Value
Publication number	US-11071466-B2
Application number	US-201816019948-A
Country	US
Kind code	B2
Filing date	Jun 27, 2018
Priority date	Aug 24, 2017
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A portable device includes: an ECG detection circuitry configured to detect an ECG signal of a user; a pulse detection circuitry configured to detect a pulse wave signal of the user; an identity determination circuitry configured to determine identity information about the user; and a blood pressure calculation circuitry connected to the ECG detection circuitry, the pulse detection circuitry and the identity determination circuitry, storing therein a plurality of blood pressure calculation models, and configured to select a blood pressure calculation model corresponding to the identity information about the user among the plurality of blood pressure calculation models in accordance with the identity information, and perform calculation to acquire a blood pressure signal of the user using the selected blood pressure calculation model in accordance with the ECG signal and the pulse wave signal.

First claim

What is claimed is:

1. A portable device, wherein the portable device is a smart phone configured to be used by a user to measure a blood pressure of the user, the portable device comprising:
an electrocardiogram (ECG) detection circuitry configured to detect an ECG signal of a user;
a pulse detection circuitry configured to detect a pulse wave signal of the user;
an identity determination circuitry configured to determine identity information about the user; and
a blood pressure calculation circuitry connected to each of the ECG detection circuitry, the pulse detection circuitry and the identity determination circuitry, wherein the blood pressure calculation circuitry is configured to store therein a plurality of blood pressure calculation models, select a blood pressure calculation model corresponding to the identity information about the user among the plurality of blood pressure calculation models in accordance with the identity information, and perform calculation to acquire a blood pressure signal of the user using the selected blood pressure calculation model in accordance with the ECG signal and the pulse wave signal,
wherein the ECG detection circuitry comprises:
an ECG detection electrode arranged on the portable device, and configured to collect voltage signals corresponding to a left hand and a right hand of the user respectively; and
a second signal processing sub-circuitry connected to the ECG detection electrode, and configured to process the voltage signals corresponding to the left hand and the right hand of the user respectively, to acquire the ECG signal of the user,
wherein the ECG detection electrode and a housing of the portable device are formed into one piece;
the ECG detection electrode consists of a first ECG detection sub-electrode, a second ECG detection sub-electrode, and a third ECG detection sub-electrode that are insulated from each other, the housing of the portable device comprises a top lateral portion, a bottom lateral portion, a left lateral portion, and a right lateral portion, the top lateral portion is opposite to the bottom lateral portion, the left lateral portion is opposite to the right lateral portion, the first ECG detection sub-electrode and one of the top lateral portion and the bottom lateral portion are formed into one piece, the third ECG detection sub-electrode and the other one of the top lateral portion and the bottom lateral portion are formed into one piece, the second ECG detection sub-electrode and one of the left lateral portion and the right lateral portion are formed into one piece, the first ECG detection sub-electrode is configured to collect the voltage signal corresponding to one hand of the user, the second ECG detection sub-electrode is configured to collect a noise signal interfering with the voltage signal corresponding to the one hand of the user, and the third ECG detection sub-electrode is configured to collect the voltage signal corresponding to the other hand of the user; and
the first and second ECG detection sub-electrodes are further configured to be contacted by the one hand of the user at a contact area greater than or equal to 1 cm 2 , and the third ECG detection sub-electrode is further configured to be contacted by the other hand of the user when the portable device is used by the user to measure a blood pressure.

2. The portable device according to claim 1 , wherein the pulse detection circuitry comprises:
a light-emission sub-circuitry configured to generate an initial light signal;
a photosensing sub-circuitry configured to collect a reflected light signal formed by the initial light signal reflected by the user; and
a first signal processing sub-circuitry connected to the photosensing sub-circuitry, and configured to process the reflected light signal to acquire the pulse wave signal of the user.

3. The portable device according to claim 2 , wherein the identity determination circuitry comprises:
a fingerprint identification sensor configured to determine fingerprint information about the user; and
an inquiry sub-circuitry configured to inquire the identity information about the user in accordance with the fingerprint information about the user.

4. The portable device according to claim 3 , wherein the portable device is a mobile terminal, a fingerprint identification button of the mobile terminal serves as the fingerprint identification sensor, a flash lamp of the mobile terminal serves as the light-emission sub-circuitry, and a camera of the mobile terminal serves as the photosensing sub-circuitry.

5. The portable device according to claim 2 , wherein the initial light signal is a green light signal, a red light signal or an infrared light signal.

6. The portable device according to claim 1 , further comprising:
a behavior pattern detection circuitry connected to the blood pressure calculation circuitry, and configured to detect behavior pattern information about the user during measurement of blood pressure of the user;
wherein the blood pressure calculation circuitry is further configured to modify the blood pressure signal of the user in accordance with the behavior pattern information.

7. The portable device according to claim 6 , wherein the behavior pattern detection circuitry comprises a movement sensor arranged inside the portable device.

8. The portable device according to claim 6 , wherein the behavior pattern information comprises information indicating that the user is in a movement state or a sit-down state during the measurement of the blood pressure.

9. The portable device according to claim 6 , further comprising:
a display circuitry configured to display the behavior pattern information, the ECG signal, the pulse wave signal, the identity information and/or the modified blood pressure signal.

10. The portable device according to claim 1 , wherein
the blood pressure calculation model is BP=f(x,y)*h(a,b,c,d), where BP represents the blood pressure signal of the user, x represents the ECG signal of the user, y represents the pulse wave signal of the user, a represents gender of the user, b represents an age of the user, c represents a height of the user, and d represents a weight of the user.

11. A blood pressure measurement method comprising:
providing the portable device according to claim 1 ;
detecting, by the portable device, the ECG signal of the user;
detecting, by the portable device, the pulse wave signal of the user;
determining, by the portable device, the identity information about the user; and
selecting, by the portable device, the blood pressure calculation model corresponding to the identity information about the user according to the identity information, and performing, by the portable device, calculation to acquire the blood pressure signal of the user using the selected blood pressure calculation model in accordance with the ECG signal and the pulse wave signal.

12. The blood pressure measurement method according to claim 11 , wherein
the blood pressure calculation model is BP=f(x,y)*h(a,b,c,d), where BP represents the blood pressure signal of the user, x represents the ECG signal of the user, y represents the pulse wave signal of the user, a represents gender of the user, b represents an age of the user, c represents a height of the user, and d represents a weight of the user.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Huang Zicheng
• Li Liang
• Ni Pan

Classifications

• A61B5/02108 Primary

  from analysis of pulse wave characteristics · CPC title

• A61B5/6898

  Portable consumer electronic devices, e.g. music players, telephones, tablet computers · CPC title

• A61B5/1172

  using fingerprinting · CPC title

• A61B5/332

  Portable devices specially adapted therefor · CPC title

• A61B5/02125

  of pulse wave propagation time · CPC title