Wound-frce intracranial pressure monitoring method and apparatus

A visual evoked potential and monitoring device technology, applied in the field of biomedical electronic engineering, can solve problems such as large measurement errors, small application range, and key technical difficulties that cannot be overcome, and achieve simple monitoring, avoiding danger and patient pain, and functional rich effect

Inactive Publication Date: 2003-03-26
重庆海威康医疗仪器有限公司
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Problems solved by technology

[0005] In order to achieve non-invasive detection of intracranial pressure, colleagues at home and abroad have started research o...

Method used

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  • Wound-frce intracranial pressure monitoring method and apparatus
  • Wound-frce intracranial pressure monitoring method and apparatus
  • Wound-frce intracranial pressure monitoring method and apparatus

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Embodiment Construction

[0049] The above-mentioned method and device of the present invention can be further illustrated by the embodiments given in the specific drawings.

[0050] According to the invention, the steps of the method include:

[0051] 1. The flashing eye mask sends a standard light stimulation signal to the human eye, which is converted into an electrical signal by the retinal photoreceptor:

[0052] The light source in the eye mask is pulsed, triggered and controlled by a computer, and constitutes the excitation signal of the evoked potential. The flash frequency, flash pulse width, flash times, and brightness adopt the optimal combination value:

[0053] 1.0Hz, 5.997ms, 60 times, 22000cd / m 2 .

[0054] The brightness of the light needs to be controlled quantitatively, and an appropriate and stable flash stimulation intensity can be maintained to ensure the adaptability and consistency of the non-invasive intracranial pressure detection.

[0055] The characteristics of this light...

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Abstract

The non-invasive intracranial pressure monitoring method adopts the flash eye-shield to give out standard photostimulation signal to human eye, said signal is sensed by retina and converted into electric signal, said electric signal can be picked up by detection electrode and undergone the process of amplifier treatment, then inputted into computer to display flashing visual evoked potential (FVEP) characteristic curve and define the peak latency of III wave, then the function relationship of intracranial pressure and peak latency of III wave, ICP=f(III Latency) can be used to display intracranial pressure value correspondent to wave peak (negative phase) point of III wave on the FVEP-Latency curve on the display screen.

Description

technical field [0001] The invention relates to biomedical electronic engineering, in particular to a non-invasive intracranial pressure monitoring method and device based on the principle of flash visual evoked potential. technical background [0002] Intracranial pressure is an important indicator reflecting the state of brain function. Brain damage can be manifested as abnormal intracranial pressure. Increased intracranial pressure is a clinical emergency. Timely and accurate grasp of the patient's intracranial pressure status is the key to the success of critically ill patients. The results of intracranial pressure monitoring provide a direct basis for accurate diagnosis, active treatment, and curative effect evaluation. [0003] Intracranial pressure monitoring is an essential technology in clinical intensive care. However, the traditional methods for detecting intracranial pressure are lumbar puncture or craniotomy, both of which are invasive methods. For some disea...

Claims

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Application Information

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IPC IPC(8): A61B5/03
Inventor 朱光辉杨凯丁玉成董为伟张建国周冀英
Owner 重庆海威康医疗仪器有限公司
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