Pressure sensor for measuring intracranial pressure and intracranial pressure detection system

Abstract

The invention provides a pressure sensor for measuring intracranial pressure. A pressure chip is packaged in a packaging device, the exposed surface of a pressure conducting layer is flush with or higher than the surface of the packaging device, so that the pressure sensor can be arranged between the skull and the dura mater or between the dura mater and the arachnoid to measure the intracranial pressure, and does not enter brain parenchyma or ventricle, injury to a patient is small, and the risk caused by product use is reduced.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a pressure sensor and an intracranial pressure detection system for measuring intracranial pressure. Background technique [0002] The cranial cavity contains brain tissue, cerebrospinal fluid and blood. When the cranial sutures are closed in children or adults, the volume of the cranial cavity is fixed, about 1400-1500ml. The pressure generated by the above three contents in the cranial cavity on the wall of the cranial cavity is called intracranial pressure (ICP), also known as brain pressure. Increased intracranial pressure (increased intracranial pressure) is a common clinicopathological syndrome in neurosurgery, and it is a common sign of craniocerebral injury, brain tumor, cerebral hemorrhage, hydrocephalus, and intracranial inflammation. Intracranial pressure continued at 2.0kPa (200mmH 2 0) above, thus causing the corresponding syndrome, known as increased i...

AI Technical Summary

Problems solved by technology

[0003] At present, the pressure sensors used to measure intracranial pressure mainly use pressure chip probes and air bag probes for measurement. Among them, the measurement of air bag probes is an indirect measurement. The intracranial pressure is transmitted to the air in the bag through the thin wall of the air bag, and then is measured The pressure sensor is converted into an electronic signal. This method is not very accurate in measuring data. The pressure chip probe has an electrical signal chip probe and an optical signal chip probe. The optical signal chip probe uses optical fiber transmission due to material limitations and cannot be bent. Signal pressure chip probe pressure sensor, the existing electrical signal pressure chip can only be used to measure pressure in the ventricle or brain parenchyma due to design reasons, which is easy to cause damage to patients

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