Blood pressure real-time measurement device and method for measuring mean blood pressure

A technology for real-time measurement and average blood pressure, applied in diagnostic recording/measurement, vascular assessment, telemetry patient monitoring, etc. It can solve the problems of blood pressure accuracy improvement, cumbersome operation, and errors, and achieve the effect of simplifying operation and eliminating interference

Active Publication Date: 2016-08-17
TSINGHUA UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the phase difference is measured at a single position. However, since the measurement process is very sensitive to the position of the sensor, a small change in the position of the sensor during the two measurements requires re-calibration, which is cumbersome and leads to errors. The accuracy of blood pressure calculation needs to be improved

Method used

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  • Blood pressure real-time measurement device and method for measuring mean blood pressure
  • Blood pressure real-time measurement device and method for measuring mean blood pressure
  • Blood pressure real-time measurement device and method for measuring mean blood pressure

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Effect test

Embodiment 1

[0085] The blood pressure real-time measurement device 10 includes a pulse wave sensing module 12 at a first position, a pulse wave sensing module 14 at a second position, a signal processing module 16 and a wireless transmission module (not shown). The pulse wave sensing module 12, the signal processing module 16 and the wireless transmission module at the first position are integrated on a flexible circuit board to form a wristband, which is installed on the wrist for real-time measurement of blood pressure in the radial artery of the wrist. The pulse wave sensing module 14 at the second position is fixed on the fingertip of the middle finger with medical 3M scotch tape. Wherein, the first pulse wave sensing module 122 at the first position, the first pulse wave sensing module 142 at the second position are pressure pulse wave sensing modules, the second pulse wave sensing module 124 at the first position, and the second pulse wave sensing module 142 at the second position T...

Embodiment 2

[0090] The blood pressure real-time measurement device of this embodiment is basically the same as the blood pressure real-time measurement device of Embodiment 1, the difference is that in this embodiment, the first pulse wave sensing module 122 at the first position and the first pulse wave sensing module 122 at the second position The sensing module 142 is a blood flow velocity pulse wave sensing module, the second pulse wave sensing module 124 at the first position, and the second pulse wave sensing module 144 at the second position are photoplethysmographic sensing modules.

[0091] After testing, Δt A 42.33ms, Δt B is 22.15ms, the calibration parameters k=0.0116, c=65.3333, and the calculated average blood pressure of this cardiac cycle is 93.8183mmHg.

Embodiment 3

[0093] The blood pressure real-time measurement device of this embodiment is basically the same as the blood pressure real-time measurement device of Embodiment 1, the difference is that in this embodiment, the first pulse wave sensing module 122 at the first position and the first pulse wave sensing module 122 at the second position The sensing module 142 is a blood flow velocity pulse wave sensing module, the second pulse wave sensing module 124 at the first position, and the second pulse wave sensing module 144 at the second position are pressure pulse wave sensing modules.

[0094] After testing, Δt A 12.45ms, Δt B is 55.27ms, the calibration parameters k=0.0514, c=60.25, and the calculated average blood pressure of this cardiac cycle is 88.2830mmHg.

[0095] The present invention calculates the average blood pressure by collecting pulse wave phase difference information at two positions of the human body, and has the following advantages: firstly, it does not need to col...

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Abstract

The invention relates to a blood pressure real-time measurement device which comprises a first position pulse wave induction module, a second position pulse wave induction module and a signal processing module, wherein the first position pulse wave induction module comprises a first position first pulse wave induction module and a first position second pulse wave induction module; the second position pulse wave induction module comprises a second position first pulse wave induction module and a second position second pulse wave induction module; the signal processing module is used for calculating a first transmission signal difference delta tA between a first pulse wave signal A1 and a second pulse wave signal A2 of the first position and a second transmission signal difference delta tB between a first pulse wave signal B1 and a second pulse wave signal B2 of the second position, and obtaining mean blood pressure (MBP) of each cardiac cycle according to a difference delta t between the first transmission signal difference delta tA and the second transmission signal difference delta tB. The invention further relates to a method for measuring the mean blood pressure.

Description

technical field [0001] The invention relates to a blood pressure measuring device and an average blood pressure measuring method, in particular to a blood pressure noninvasive, continuous and real-time measuring device and a measuring method. Background technique [0002] Cardiovascular disease is currently the leading cause of death in both developed and developing countries. Hypertension is one of the most important risk factors for cardiovascular and cerebrovascular diseases. 50% to 70% of strokes and 40% to 50% of myocardial infarctions are related to elevated blood pressure. Blood pressure monitoring plays an important role in the prevention, early detection and treatment of cardiovascular and cerebrovascular diseases. Therefore, realizing non-invasive and continuous measurement of blood pressure is of great significance for health monitoring and clinical research. [0003] The traditional measurement of blood pressure based on Pulse Transit Time (PTT) is a relatively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/021A61B5/00
CPCA61B5/0004A61B5/0015A61B5/0059A61B5/02108A61B5/7271
Inventor 邓宁李毅彬
Owner TSINGHUA UNIV
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