Synchronous breath and heartbeat signal extraction method and synchronous breath and heartbeat signal extraction device for collecting multiple medical signals

A technology for synchronizing signals and extracting methods, applied in the field of medical signal acquisition, can solve problems such as the operator's inability to actively control the patient's breathing movement, inapplicability, and unsatisfactory patient cooperation, so as to prevent false peak interference, improve accuracy, and reduce effect of influence

Inactive Publication Date: 2016-02-17
FUDAN UNIV
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Problems solved by technology

Its disadvantage is that the operator cannot actively control the breathing movement of the patient, resulting in unsatisfactory c

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  • Synchronous breath and heartbeat signal extraction method and synchronous breath and heartbeat signal extraction device for collecting multiple medical signals
  • Synchronous breath and heartbeat signal extraction method and synchronous breath and heartbeat signal extraction device for collecting multiple medical signals
  • Synchronous breath and heartbeat signal extraction method and synchronous breath and heartbeat signal extraction device for collecting multiple medical signals

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[0046] The general structure diagram of the breathing and heartbeat synchronization method and device proposed by the present invention is as follows figure 1 Shown. The signals that the system needs to collect include respiratory signal 103 and ECG signal 104. Finally, after the synchronization selection of this method, a time window synchronization signal 117 used to eliminate the influence of respiratory activity and heartbeat is obtained.

[0047] In the respiratory signal acquisition module 101, a constant pressure excitation is applied in the front and rear directions of the chest cavity. A 10Ω respiratory signal measurement resistor is connected in series in the excitation circuit. Because the impedance of the entire chest cavity changes periodically during the breathing process, it will lead to the measurement of the respiratory signal The pressure drop on the resistance changes in synchronization with breathing, and the breathing signal 103 can be measured. The respirat...

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Abstract

The invention belongs to the field of medical signal collection, and specifically relates to a method and a device for extracting a synchronous breath and heartbeat signals. The device consists of a signal collection module, a signal pre-processing module and a synchronous signal extraction module, wherein the signal collection module is used for completing the collection of a breath signal and a body surface ECG(Electrocardiogram) signal; the signal pre-processing module is used for carrying out amplifying-filtering pre-processing on the breath signal and the ECG signal; the synchronous signal extraction module is used for extracting a synchronous signal according to requirements through recognizing characteristic points of the breath signal and the ECG signal, i.e., providing a time window for collecting other medical signals. According to the method and the device for extracting the synchronous breath and heartbeat signals, disclosed by the invention, a suitable time window can be set for collecting the other medical signals through the synchronous breath and heartbeat signals, the interference, which is caused by breath and heartbeats, on the other medical signals can be effectively restrained, and the method is simple and effective.

Description

technical field [0001] The invention belongs to the technical field of medical signal acquisition, in particular to a method and device for extracting synchronous signals of breathing and heartbeat. Background technique [0002] When some medical signals are collected, the body vibration and impedance changes caused by respiratory activity and heartbeat will cause interference to the collected signals that is not easy to eliminate. [0003] In order to solve the above problems, in the current related diagnosis / treatment, the commonly used method is that the operator monitors the breathing dynamics to instruct the patient to hold his breath at an appropriate time to eliminate the influence of breathing movement. Its disadvantage is that the operator cannot actively control the breathing movement of the patient, resulting in unsatisfactory cooperation of the patient, and it is even more unsuitable for children, patients with respiratory dysfunction and poor compliance. Theref...

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Application Information

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IPC IPC(8): A61B5/00A61B5/0402A61B5/085G06F19/00
Inventor 邬小玫朱甬
Owner FUDAN UNIV
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