Non-invasive intracranial pressure measurement method and measurement instrument

Abstract

The invention discloses a non-invasive intracranial pressure measurement method and a measurement instrument implementing the method. The method comprises that a vibration signal generated in front of the head portion of a patient is transmitted to the non-invasive intracranial pressure measurement instrument; the resonance frequency of the head portion of the patient is extracted through treatment by the non-invasive intracranial pressure measurement instrument, and a measurement value of the intracranial pressure is obtained; and measurement parameters of the intracranial pressure of the patient at the moment are displayed on an upper computer software interface and a liquid crystal display. By the aid of the method, diagnoses can be conducted in real time and quickly, a high-performance processor is used for converting and analyzing signals, and results can be obtained in a few seconds after scanning is finished, so that measurement can be conducted at any time, additional influence on the patient is prevented, conditions can be monitored in real time, and changes can be grasped.

Description

technical field [0001] The invention belongs to the field of biomedicine, in particular to the measurement of skull internal pressure. Background technique [0002] Intracranial pressure refers to the pressure generated by the contents of the cranial cavity on the wall of the cranial cavity, which can be expressed by the hydrostatic pressure of the cerebrospinal fluid. Medically, it is believed that the normal range of human beings is 7-18 cm water column (0.69-0.78kPa), and the intracranial pressure of 18-20 cm water column (1.77-1.96kPa) is a suspicious clinical symptom, and the pressure above 20 cm (1.96kPa) is Increased intracranial pressure. [0003] Brain diseases such as brain tissue injury infection, internal hemorrhage, hydrocephalus, etc., will cause cerebrospinal fluid accumulation, resulting in a rapid increase in intracranial pressure, and increased intracranial pressure is one of the common causes of clinical deterioration, postoperative adverse events or deat...

AI Technical Summary

Problems solved by technology

Among them, the CN202161317U near-infrared spectrum signal device relies on the principle that different materials and materials have characteristic absorption of near-infrared rays, but the intracranial pressure is outside the inner skull, and the weak signal generated by the weakly changing exoskeleton tension is difficult to measure intracranial pressure efficiently and sensitively, requiring professional and meticulous analysis by medical personnel; CN1404793A The flash visual evoked potential detection method and device rely on the electrical signals sent by the head nerves under pulsed flash, requiring sophisticated flash instruments, fuzzy experience curves, and complicated signals processing, there are many sources of error and measurement problems; CN101150989A non-invasive measurement through acoustic transducers and CN200980680Y cerebrovascular hemodynamics detection device rely on the trans-frequency ultrasound Doppler technology originally used for cerebrovascular imaging, mainly based on blood flow changes caused by intracranial pressure to find lesions, but this process has to go through four processes: increased intracranial pressure, loss of regulatory function, decreased perfusion pressure, and decreased cerebral blood flow. It is often too late when significant changes in cerebral blood flow are found. Vasoactivity is affected by various non-linear factors (such as PaCO2, PaO2, pH value, blood pressure) and heartbeat fluctuations. The physiological environment in the brain is complicated when the lesion occurs, so that the conditions for measuring intracranial pressure are complicated and there is cross-interference, and the parameters cannot be accurately determined.

In addition, there are less commonly used methods such as retinal manometry, bioelectrical impedance method, magnetic induction tomography, etc., but the above methods all have the problems of complex and expensive instruments and processing, long preparation and measurement time, difficult implementation and maintenance, and inability to directly measure. Instead, they only use the clinical symptoms or chemical characteristics of increased intracranial pressure, resulting in a lack of stability and sensitivity of the results. For the above, please refer to ISBN: 9787040288681 "Intracranial Pressure Noninvasive Detection Method and Implementation", Ji Zhong

[0007] It can be seen that in recent years, there have been many researches on non-invasive detection methods of intracranial pressure at home and abroad, but now these programs are only discussing the feasibility of observing intracranial pressure through other parameters in a certain complex inspection method, and there are not many non-invasive instruments that can be used in clinical practice to measure intracranial pressure efficiently and accurately.

Images