CONTINUOUS CUFFLESS BLOOD PRESSURE MEASUREMENT USING A MOBILE DEVICE

• US 20150073239A1
• Filed: 04/30/2014
• Published: 03/12/2015
• Est. Priority Date: 09/09/2013
• Status: Abandoned Application

• Current Assignee: Maxim Integrated Products, Inc. (Analog Devices, Inc.)
• Original Assignee: Maxim Integrated Products, Inc. (Analog Devices, Inc.)
• Inventors: Pei, Cheng-Wei, Sthalekar, Chirag C.
• Application Number:
  US14/265,434
• Publication Number:
  US 20150073239A1
• Time in Patent Office: Days
• US Class Current: 600/324
• CPC Class Codes: A61B 5/02125 of pulse wave propagation time
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/6898 Portable consumer electronic devices, e.g. music players, telephones, tablet computers
• CPC Class Codes: A61B 5/7285 for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal A61B6/5205, A61B6/541, A61B8/5207, A61B8/543 take precedence
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence

Abstract

A mobile blood pressure monitor is described that includes an integrated acoustic device, an optical sensor including at least one of a light source or a pulse oximeter device, and control circuitry coupled to the integrated acoustic device and the optical sensor. Additionally, a mobile electronic device configured to measure blood pressure is described that includes a mobile system and a mobile blood pressure monitor as disclosed above. In implementations, a process for measuring blood pressure includes sensing a heart sound with an integrated acoustic device, measuring a blood pulse rate at a peripheral site with an optical sensor, calculating a pulse wave transit time using a sensed heart sound and a measured blood pulse rate, and correlating a blood pressure using the heart sound and the blood pulse rate.

Claims

1. A mobile blood pressure monitor, comprising:

an integrated acoustic device;

an optical sensor; and

control circuitry coupled to the integrated acoustic device and the optical sensor.

2. The mobile blood pressure monitor of claim 1, wherein the integrated acoustic device includes a microphone sensor.

3. The mobile blood pressure monitor of claim 1, wherein the integrated acoustic device is disposed on a first side of the mobile blood pressure monitor that is adjacent to a second side of the mobile blood pressure monitor with the optical sensor device.

4. The mobile blood pressure monitor of claim 1, wherein the optical sensor includes a pulse oximeter device.

5. The mobile blood pressure monitor of claim 1, wherein the control circuitry is configured to measure pulse wave transit time.

6. The mobile blood pressure monitor of claim 1, wherein the control circuitry includes synchronization circuitry configured to synchronize a heart sound measurement and a photoplethysmography (PPG) measurement.

7. The mobile blood pressure monitor of claim 1, wherein the control circuitry includes computing circuitry configured to control the integrated acoustic device and the pulse oximeter device.

8. The mobile blood pressure monitor of claim 1, wherein the optical sensor includes a light source.

9. A mobile electronic device configured to measure blood pressure, comprising:

a mobile system; and

a mobile blood pressure monitor integrated into the mobile system, including

an integrated acoustic device;

an optical sensor; and

control circuitry coupled to the integrated acoustic device and the optical sensor.

10. The mobile electronic device of claim 9, wherein the mobile system includes a cell phone device.

11. The mobile electronic device of claim 9, wherein the mobile system includes a smart phone device.

12. The mobile electronic device of claim 9, wherein the mobile system includes a tablet computing device.

13. The mobile electronic device of claim 9, wherein the acoustic device includes a microphone sensor.

14. The mobile electronic device of claim 9, wherein the acoustic device is disposed on a first side of the mobile electronic device that is adjacent to a second side of the mobile electronic device with the optical sensor.

15. The mobile electronic device of claim 9, wherein the optical sensor includes a pulse oximeter device.

16. The mobile electronic device of claim 9, wherein the optical sensor includes a light source.

17. A process for measuring blood pressure, comprising:

sensing a heart sound with an integrated acoustic device;

measuring a blood pulse rate at a peripheral site with an optical sensor;

calculating a pulse wave transit time using a sensed heart sound and a measured blood pulse rate; and

correlating a blood pressure using the heart sound, the blood pulse rate, and the pulse wave transit time.

18. The process for measuring blood pressure of claim 17, wherein measuring a blood pulse rate includes measuring a photoplethysmography (PPG) measurement.

19. The process for measuring blood pressure of claim 17, wherein measuring a blood pulse rate at a peripheral site includes measuring the blood pulse rate from a finger.

20. The process for measuring blood pressure of claim 17, wherein correlating the blood pressure includes correlating a systolic blood pressure.