CN201333032Y

CN201333032Y - Implanted wireless automatic intracranial pressure monitoring system

Info

Publication number: CN201333032Y
Application number: CNU2008201244164U
Authority: CN
Inventors: 陈昭祥; 李平; 费兴波
Original assignee: Beijing Aomaite Science & Technology Co Ltd
Current assignee: Beijing Ruizhicong Technology Co.,Ltd.
Priority date: 2008-12-05
Filing date: 2008-12-05
Publication date: 2009-10-28
Anticipated expiration: 2018-12-05

Abstract

The utility model relates to an implanted wireless automatic intracranial pressure monitoring system which comprises an in vivo part and an external part. The external part sends an instruction to the in vivo part through wireless electromagnetic waves; after receiving the instruction, the in vivo part collects the intracranial pressure data through a piezoelectric sensor and sends the intracranial pressure data to the external part through wireless electromagnetic waves, thus reaching the purpose of automatic monitoring. The monitoring system comprises the in vivo part and the external part which are totally independent in aspect of hardware. When in use, the two parts communicate with each other through radio frequency to reach the function of automatically monitoring the intracranial pressure (ICP). The external part comprises a power supply circuit, a singlechip, a radio frequency circuit chip, an antenna coil and a display and control interface. The in vivo part comprises an antenna coil, a power supply acquisition circuit, a load modulation circuit, a singlechip, a pressure sensor and a signal processing circuit. The monitoring system is more convenient, quick, accurate, safe, reliable and effective and causes less infection and has high adaptability.

Description

A kind of implantation type wireless intracranial pressure automatic monitoring system

Technical field

This utility model relates to a kind of intracranial pressure measuring system device, particularly a kind of implantation type wireless intracranial pressure automatic monitoring system.

Background technology

It is a kind of reflection of intracranial disease or intracranial Secondary cases pathological changes that ICP (intracra-nial pressure (ICP) (intracranial pressure)) increases, and increases and takes therapy measure as can not in time finding ICP, then may cause serious consequence, even threat to life.In clinical position, simple dependence observation neurological symptom or CT, MRI imaging data judge whether ICP increases, be difficult to the practical level of explanation ICP, so adopt the ICP monitoring that continues as " early alert system ", help early discovery and increase and intracranial disease, and improve curative effect with timely processing IC P.According to the objective data of ICP, can guiding clinical treatment, predict prognosis, this is the important measures that improve the cure rate of Heavy craniocerebral injury and other associated patient and reduce mortality rate.

The dynamic monitoring of ICP, very important for the disease of brain patient, the method for the present monitoring of ICP clinically can be divided into wound and noinvasive two big classes.But the non-invasive measurement method exists characteristics such as measuring accuracy is poor, method is loaded down with trivial details and is not widely used in clinical.Therefore, the at present domestic and international comparatively popular clinically method that is wound.Monitoring intracranial pressure technology and equipment thereof so far also and imperfection, exist monitoring result inadequately accurately, problem such as infection easily.

The utility model content

In order to overcome the shortcoming of above-mentioned prior art, the utility model proposes a kind of new monitoring intracranial pressure system, this system by on the hardware fully independently in the body part and outer body form.Described outer body provides energy and sends instruction by part in the wireless electromagnetic wave direction body, part is obtained the intracranial pressure data by pressure transducer in the body, and these intracranial pressure data are sent to outer body by radio magnetic wave, reach the purpose of automatic monitoring ICP.

The outer body of this system can partly be pressed automatic, the continuous monitoring intracranial pressure in setting-up time interval in the control volume.Outer body can show, write down measurement result in real time; The measurement result data also can be transferred to that other equipment show by output interface, analysis and record.

Outer body comprises: power-supply circuit, and single-chip microcomputer, radio circuit, aerial coil show and the control interface data storage, data output interface; Wherein, described power-supply circuit, single-chip microcomputer and radio circuit chip link to each other with power-switching circuit respectively; Described single-chip microcomputer and aerial coil link to each other with no radio circuit chip respectively, and described demonstration and control interface link to each other with single-chip microcomputer.Power-supply circuit is total system power supply, and Single-chip Controlling also sends electromagnetic wave by radio frequency chip, and part transmits energy and control instruction in body; During measuring, outer body receives the inner measurement data that sends of dividing of body, and this data signal is sent into single-chip microcomputer, after decoding is handled, obtains the intracranial pressure data, shows by display, is stored in storage wherein, also can export by data-interface.

Body comprises inner the branch: aerial coil, power supply acquisition cuicuit, load-modulate circuit, single-chip microcomputer, pressure transducer and signal conditioning circuit; Wherein, described aerial coil, single-chip microcomputer, signal conditioning circuit and pressure transducer link to each other with the power supply acquisition cuicuit respectively; Described load-modulate circuit and signal conditioning circuit link to each other with single-chip microcomputer respectively, and described pressure transducer links to each other with signal conditioning circuit, and described aerial coil links to each other with the load-modulate circuit.After the aerial coil of part in the body received radio magnetic wave, the power supply acquisition cuicuit was induced signal rectification, filtering, and provided required voltage by the voltage transitions chip for each circuit unit of part in the body; Pressure transducer perception intracranial pressure signal, described signal conditioning circuit carries out filtering, processing and amplifying to this signal, and sends in the single-chip microcomputer; Described single-chip microcomputer will carry out A/D conversion and coding through the intracranial pressure signal after the conditioning; This intracranial pressure measurement data sends to outer body by the load-modulate mode at last.

Outer body also comprises data storage and data output interface; Data storage can be preserved the measurement data in the certain hour; Data output interface can be sent to measurement data other equipment, and this interface can be USB or RS232 interface.

Encephalic pressure detecting system of the present utility model has following advantage:

(1) convenient, fast

Use other (wound is arranged) when system monitors, must just can carry out, but also need special technical staff to operate in operating room.Also have, measure once, must puncture once, but also get the concern wound situation of not stopping, cumbersome.

And use this system, and only need to do the most at the beginning a minor operation, " system in the body " is implanted to intracranial, just can monitor patient's ICP afterwards quickly and easily.Monitoring afterwards can be carried out anywhere or anytime, is not subjected to time and spatial restriction, such as can stay at home at any time or the ward in monitor, nor need special technical staff to operate, only need by several buttons, system can move automatically, voluntarily monitoring.

(2) accurate

According to one's analysis, when the monitoring of ICP was carried out in Intraventricular, ratio of precision was higher, and this system can be implanted to Intraventricular with pick off and monitor according to actual needs.Also have, along with improving constantly of sensor technology, can find reliable and stable pick off, it is not subject to the intracranial Effect of Environmental, and its piezoelectricity conversion accuracy can be guaranteed preferably like this.And aspect the transmission and processing of the signal of telecommunication, all can reach higher precision.

(3) safety, reliable effective, the few infection

When using other (wound is arranged) system monitoring patients' ICP, the capital makes some position and the extraneous communications and liaison of patient's head, like this, not only cause intracranial infection easily, but also be subjected to the influence of non-intracranial factor easily, cause moving of pick off such as restless, or can cause the distortion of connecting line or fracture, cause inaccurate even other major accidents of measurement or the like.

And this system, will be in the body part be buried in intracranial, adopt wireless mode with the communication in the external world, so just not only can reduce infection, can also reduce the pick off that causes because of other factors unfavorable factor that is shifted or the like.Because implant surgery belongs to Wicresoft, and is also smaller to the influence that health causes.

(4) suitability height

This system can be implanted to corresponding position with pick off as required, as: places such as (or outer) in Intraventricular, the brain essence, under the arachnoidea or under the cerebral dura mater.Since not with extraneous communications and liaison, the applicable long-time monitoring that continues.Details can be decided according to practical situation.

Description of drawings

Fig. 1 is an implantation type wireless intracranial pressure automatic monitoring system frame diagram of the present utility model;

Fig. 2 is an implantation type wireless intracranial pressure automatic monitoring system outer body structure chart of the present utility model;

Fig. 3 is part-structure figure in the implantation type wireless intracranial pressure automatic monitoring system body of the present utility model;

Fig. 4 is that implantation type wireless intracranial pressure automatic monitoring system of the present utility model is used flow chart.

The specific embodiment

The encephalic pressure detecting system that this utility model provides, by on the hardware fully independently in the body part and outer body form, as shown in Figure 1.During use, two parts reach the effect of automatic monitoring ICP by radio-frequency communication.

As shown in Figure 2, described outer body comprises: power-supply circuit, and single-chip microcomputer, radio circuit, aerial coil show and the control interface data storage, data output interface.

As shown in Figure 3, described body comprises inner the branch: aerial coil, power supply acquisition cuicuit, load-modulate circuit, single-chip microcomputer, pressure transducer and signal conditioning circuit.

Use this system, carry out as follows:

(1) implants " system in the body "

At first to do a minor operation, implant " system in the body ", perhaps when doing other operation, finish in passing.As the case may be, piezoelectric transducer can be placed Intraventricular, brain essence, arachnoidea down or under the cerebral dura mater (or outer), partial circuit module in the connected body is planted under the scalp layer.This belongs to Minimally Invasive Surgery, and is little to physical effects.

(2) measure ICP

During measurement (as shown in Figure 4), the aerial coil opposite position that needs elder generation that external aerial coil is placed on and implants, only need open the on and off switch and the start button of outer body then, all can receive the measuring-signal of ex vivo implant anywhere or anytime, thereby automatically continuously, repeat to monitor patient's ICP, up to the power supply of closing outer body.

Measurement result shows in real time that on the display screen of outer body measurement data is automatic record in the memorizer of outer body, and measurement data also can be sent to other equipment by data output interface.

Claims

1, a kind of intracranial pressure automatic monitoring system is characterized in that, described monitoring system comprises: part and outer body in the body;

Described outer body comprises: power-supply circuit, power-switching circuit, single-chip microcomputer, radio circuit chip, aerial coil and demonstration and control interface;

Wherein, described power-supply circuit, single-chip microcomputer and radio circuit chip link to each other with power-switching circuit respectively; Described single-chip microcomputer and aerial coil link to each other with no radio circuit chip respectively, and described demonstration and control interface link to each other with single-chip microcomputer;

Described body comprises inner the branch: aerial coil, power supply acquisition cuicuit, load-modulate circuit, single-chip microcomputer, pressure transducer and signal conditioning circuit;

Wherein, described aerial coil, single-chip microcomputer, signal conditioning circuit and pressure transducer link to each other with the power supply acquisition cuicuit respectively; Described load-modulate circuit and signal conditioning circuit link to each other with single-chip microcomputer respectively, and described pressure transducer links to each other with signal conditioning circuit, and described aerial coil links to each other with the load-modulate circuit.

2, monitoring system according to claim 1 is characterized in that, described outer body also comprises data storage and data output interface; Described data storage is used to preserve the measurement data in the certain hour; Described data output interface is used for measurement data is sent to other equipment.

3, monitoring system according to claim 2 is characterized in that, described data storage and data output interface are USB or RS232 interface.

4, monitoring system according to claim 2 is characterized in that, part is pressed automatic, the continuous monitoring intracranial pressure in setting-up time interval in the outer body control volume of this system; Described outer body shows, writes down measurement result in real time; Described measurement result data by data output interface be transferred to that other equipment show, analysis and record.