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An implantable wireless passive intracranial pressure monitoring system

A wireless passive monitoring system technology, applied in the field of medical equipment, achieves the effect of low heat generation, light weight, and easy promotion and use

Active Publication Date: 2019-05-31
INST OF ELECTRONICS CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method and other existing implanted intracranial pressure monitoring devices are all wired, and there are many inconveniences in the continuous monitoring process

Method used

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  • An implantable wireless passive intracranial pressure monitoring system
  • An implantable wireless passive intracranial pressure monitoring system
  • An implantable wireless passive intracranial pressure monitoring system

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Experimental program
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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0036] Such as figure 2 As shown, the embodiment of the present invention provides an implantable wireless passive intracranial pressure monitoring system, which can realize long-term intracranial pressure monitoring, which includes:

[0037] The intracranial pressure sensor 21 is used to sense the intracranial pressure value, and its resonant frequency changes with the change of the intracranial pressure value;

[0038] The external patch reader 31, based on the principle of electromagnetic induction coupling, generates mutual inductance coupling with the intracranial pressure sensor 21, and its impedance spectrum changes at the resonant frequency of the intracranial pressure sensor;

[0039] The detection instrument 4...

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Abstract

The invention provides an embedded wireless passive intracranial pressure monitoring system. The system comprises an intracranial pressure sensor used for sensing the intracranial pressure value, an external SMD reader in mutual inductive coupling with the intracranial pressure sensor, and a detection instrument connected with the external SMD reader and used for detecting the resonant frequency of the intracranial pressure sensor to obtain the intracranial pressure value. According to the embedded wireless passive intracranial pressure monitoring system, a wire or conduit is not needed for connection with external equipment, so that the risk of intracranial infection is avoided, and normal activities of a patient will not be limited; a battery is not needed for supplying power to the system, and long-time monitoring can be realized; a pressure-sensitive capacitor of the LC resonant pressure sensor is of an MEMS structure and is small in size and low in cost; a flexible PCB printed coil is adopted in the external SMD reader and is low in weight, small in thickness and good in bending performance, and therefore the patient will not feel uncomfortable.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an implantable wireless passive intracranial pressure monitoring system. Background technique [0002] Intracranial pressure refers to the pressure generated by the contents of the cranial cavity on the wall of the cranial cavity, and is an important observation index for clinical diagnosis and treatment of neurosurgery. Normal intracranial pressure ranges from 70 to 180mmH 2 O, when intracranial pressure continues to exceed 180mmH 2 O, duration greater than 5min, clinically known as increased intracranial pressure. Increased intracranial pressure can lead to a series of physiological dysfunction and pathological changes, manifested as typical manifestations such as headache, nausea, vomiting, and papilledema. Severe intracranial hypertension can also be complicated by complications such as pulmonary edema and hypertensive crisis, and can also cause autonomic dysfuncti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/03A61B5/07
CPCA61B5/031A61B5/076A61B5/686A61B5/6868
Inventor 王军波魏秋旭赵明陈德勇陈健
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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