CN209450518U - A kind of intracranial pressure noninvasive monitoring device - Google Patents
A kind of intracranial pressure noninvasive monitoring device Download PDFInfo
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- CN209450518U CN209450518U CN201821289134.XU CN201821289134U CN209450518U CN 209450518 U CN209450518 U CN 209450518U CN 201821289134 U CN201821289134 U CN 201821289134U CN 209450518 U CN209450518 U CN 209450518U
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Abstract
A kind of intracranial pressure noninvasive monitoring device provided by the utility model, including according to sequentially connected near-infrared blood oxygen saturation detection probe, blood oxygen AD conversion module, microprocessor and display screen, and according to sequentially connected blood pressure detector, blood pressure AD conversion module and microprocessor；The oxygen saturation signal that near-infrared blood oxygen saturation detection probe will test is transmitted to microprocessor after analog-to-digital conversion, the mean arterial pressure signal that blood pressure detector will test is transmitted to microprocessor after analog-to-digital conversion, microprocessor carries out data processing, and by after data processing as the result is shown on display screen.Cerebral blood oxygen saturation is obtained using near infrared spectrum, and mean arterial pressure is combined to carry out real-time monitoring to intracranial pressure, accurately measures the numerical value of intracranial pressure.
Description
Technical field
The utility model relates to biomedical engineering technology fields, and in particular to intracranial pressure noninvasive monitoring device.
Background technique
One main cause of intracranial hypertension room secondary brain injury, degree and duration have been demonstrated and survive
Rate, the degree of permanent disfunction are related, especially when encephalic volume-pressure curve reaches critical point, as long as encephalic body
Slight variations occur for product, and intracranial pressure will sharply increase, and aggravate brain displacement and hernia cerebri, center of origin failure crisis, therefore clinic
Monitoring intracranial pressure is extremely important.
In a kind of intracranial pressure noninvasive comprehensive monitoring analysis method and device of Patent No. CN101627905, disclose logical
It crosses flash visual evoked potential measurement and obtains physiology and biomechanical parameter through the how general monitoring subsystem of cranium, by intracranial pressure noninvasive
Comprehensive monitoring mathematical model and software carry out seamless fusion and processing analysis to parameter, obtain the non-invasive quantitative detected value of intracranial pressure
And dynamic changing process.Flash visual evoked potential can more accurate, noninvasive intracranial pressure, but at present on there are it is following not
Foot: (1) flash visual evoked potential mainly calculates intracranial pressure value by the preclinical length of N2 wave, but operator selects N2 wave
Preclinical order of accuarcy directly affects measurement result, and there are no unified science marks for selection preclinical to N2 wave at present
It is quasi-；(2) parametric equation of flash visual evoked potential is the disease set up based on hydrocephalic, but different at present,
Such as whether the influence of intracranial infection, brain edema, contusion and laceration of brain, hydrocephalus and brain tumor to nerve conduction velocity is consistent still can not
Know；(3) age also has an impact to nerve conduction velocity, and 60 years old or more patient can extend with the incubation period of increasing at age, also not
Suitable for monitoring children's increased intracranial pressure patient.
Also, based on different testing principles, as doppler ultrasound, eardrum displacement, optic nerve diameter, funduscopy,
The non-invasive monitoring method of the intracranial pressures such as computed tomography Magnetic resonance imaging can not continuously carry out.
Near-infrared spectrum technique is a kind of detection technique quickly grown in recent decades, it can measure local tissue oxygen
Saturation degree, and can continuous real-time monitoring.Near infrared light penetrates during tissue constantly by the deoxidation blood in tissue
Lactoferrin, oxyhemoglobin absorb and decay.The absorption of light follows Beer-Lambert law, the absorption master of near infrared light
Related with Hb, HbO2, for absorption peak respectively in 760nm and 850nm, the opposite variation of the two reflects the big of the oxygen content of blood
It is small, brain tissue is irradiated with the incident light of two kinds of different wave lengths, further according to the difference of some scattered light of the two kinds of wavelength received
Intensity can directly calculate Hb the and HbO2 concentration in tissue, and derive cerebral blood oxygen saturation RSO2.Blood oxygen of brain is full
It is 50-90% with degree RSO2 normal value, it is abnormal less than 50% prompt, will occur serious cerebral hypoxia damage less than 40%,
The factor for influencing RSO2 is mainly influenced by brain groundwater increment and brain metabolism.The raising of ICP can cause the reduction of cerebral perfusion pressure, existing
Propose between brain oxygen saturation and ICP that there are significant negative correlativing relations in technology although having, not according to measurement brain oxygen
Saturation degree obtains the accurate data of intracranial pressure, does not also design a inspection that intracranial pressure is obtained according to measurement brain oxygen saturation
Survey/monitoring device.
Utility model content
For the defects in the prior art, the utility model provides a kind of intracranial pressure noninvasive monitoring device, utilizes near-infrared
Spectrum obtains cerebral blood oxygen saturation, and mean arterial pressure is combined to carry out real-time monitoring to intracranial pressure.
A kind of intracranial pressure noninvasive monitoring device provided by the utility model, including be saturated according to sequentially connected near-infrared blood oxygen
Detection probe, blood oxygen AD conversion module, microprocessor and display screen, and according to sequentially connected blood pressure detector, blood pressure AD
Conversion module and microprocessor；The oxygen saturation signal that near-infrared blood oxygen saturation detection probe will test is after analog-to-digital conversion
It is transmitted to microprocessor, the mean arterial pressure signal that blood pressure detector will test is transmitted to micro process after analog-to-digital conversion
Device, microprocessor carry out data processing, and by after data processing as the result is shown on display screen.
Further, the capable of emitting two kinds of different wave length near-infrareds of light source on the near-infrared blood oxygen saturation detection probe
Light, the near infrared light that two photodetectors apart from light source side are used to receive to return.Two photodetectors are respectively shallow
Layer tissue photodetector and deep tissues photodetector, the distance between shallow layer tissue's photodetector and light-emitting component are small
In the distance between deep tissues photodetector and light-emitting component.
Further, display screen is also used to show the blood oxygen saturation that infrared blood oxygen saturation detection probe detects, and
The mean arterial pressure that display of blood pressure detection device detects.
It further, further include communication module, the communication module is connected with the microprocessor, and the communication module will be examined
Blood oxygen saturation, mean arterial pressure and the intracranial pressure being calculated measured is sent to hospital management system.
As shown from the above technical solution, the utility model has the beneficial effects that
The utility model provides intracranial pressure noninvasive monitoring device, the blood oxygen that near-infrared blood oxygen saturation detection probe will test
Saturation signal is transmitted to microprocessor after analog-to-digital conversion, and the mean arterial pressure signal that blood pressure detector will test is through mould
Be transmitted to microprocessor after number conversion, microprocessor carries out data processing, and by after data processing as the result is shown to display screen
On.Cerebral blood oxygen saturation is obtained using near infrared spectrum, and mean arterial pressure is combined to carry out real-time monitoring to intracranial pressure, it is accurate to survey
Measure the numerical value of intracranial pressure.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is a kind of structural block diagram of intracranial pressure noninvasive monitoring device of the utility model.
Fig. 2 is a kind of flow diagram of intracranial pressure noninvasive monitoring device method.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this reality
The ordinary meaning understood with novel one of ordinary skill in the art.
Referring to Fig. 1, a kind of intracranial pressure noninvasive monitoring device provided in this embodiment, including it is full according to sequentially connected blood oxygen
With detection device, blood oxygen AD conversion module, microprocessor and display screen, and according to sequentially connected blood pressure detector, blood pressure
AD conversion module and microprocessor；The oxygen saturation signal that blood oxygen saturation detection device and detection probe will test is through modulus
Microprocessor is transmitted to after conversion, the mean arterial pressure signal that blood pressure detector will test is transmitted to micro- after analog-to-digital conversion
Processor, microprocessor carry out data processing, and by after data processing as the result is shown on display screen.Microprocessor is counted
According to the formula of processing are as follows:
ICP=(MAP-1.367 × RSO2)mmHg
Wherein, RSO2Be for cerebral blood oxygen saturation, MAP is mean arterial pressure, ICP is intracranial pressure.
Blood oxygen saturation detection device is near-infrared blood oxygen saturation detection probe.On the near-infrared blood oxygen saturation detection probe
The capable of emitting two kinds of different wave length near infrared lights of light source, two photodetectors apart from light source side are used to receive the close of return
Infrared light.Two photodetectors are respectively shallow layer tissue's photodetector and deep tissues photodetector, shallow layer tissue's light
The distance between detecting element and light-emitting component are less than the distance between deep tissues photodetector and light-emitting component.Shine member
Part emits the infrared light of two kinds of different wave lengths, by being detected the scattering of tissue, the shallow layer tissue light inspection ipsilateral positioned at light-emitting component
It surveys element and deep tissues optical element receives the diffused light of tested tissue shallow-layer and deep layer respectively, the data warp after being converted by A/D
Cerebral blood oxygen saturation is calculated in microprocessor.Further include power module, power module be near-infrared blood oxygen saturation detection probe,
Blood pressure detector, microprocessor and display screen provide power supply.
A kind of intracranial pressure noninvasive monitoring method, comprising the following steps:
S1, being popped one's head in using near-infrared blood oxygen saturation detection obtains cerebral blood oxygen saturation RSO2；
S2, mean arterial pressure MAP is obtained using blood pressure detector；
S3, cerebral blood oxygen saturation RSO is utilized2, mean arterial pressure MAP and intracranial pressure ICP variation between functional relation, obtain
To intracranial pressure ICP detected value；
S4, it popped one's head in obtain a blood oxygen saturation RSO using near-infrared blood oxygen saturation detection every 1 hour2, and utilize
Blood pressure detector obtains a mean arterial pressure MAP, and intracranial pressure ICP value is calculated, to be continuously available intracranial pressure
Monitor value and dynamic changing process.
The utility model carries out continuous monitoring in 36 hours, monitoring method and instrument using clinical institute measured data:
(1) invasive intracranial pressure ICP monitoring (control group): intersection drills ICP fibre-optical probe at the top of the volume of lesion opposite side
It is all put between dura mater and skull through drill hole, away from drilled edge 1cm, numerical value is supervised from the ICP being connected with ICP fibre-optical probe
It protects on the liquid crystal display of instrument and reads.
(2) cerebral blood oxygen saturation RSO2Monitoring: using near-infrared blood oxygen saturation detection probe be placed in ipsilateral forehead geisoma with
Between hairline, near-infrared blood oxygen saturation detection probe and RSO2The liquid crystal display of monitor is connected, and passes through liquid crystal display
Read data.
(3) mean arterial pressure MAP: blood pressure is continuously monitored using blood pressure cuff, mean arterial pressure is calculated and goes forward side by side
Row is read.
Case history 1, male, the age 39 years old, intracranial tumors were postoperative.
As a result: by this patient postoperative 36 hours intracranial pressure ICP mean values, cerebral blood oxygen saturation RSO2Mean value is averagely moved
Pulse pressure MAP mean value is analyzed, and as a result see the table below:
The intracranial pressure diversity factor that the intracranial pressure and invasive method detected as can be seen from the above table by this method detects exists
Within positive and negative 5%, difference is not significant, belongs to nominal error range.It can be seen that passing through a kind of intracranial pressure noninvasive prison of this programme
Device and intracranial pressure noninvasive monitoring device method are surveyed, real-time monitoring can be carried out to intracranial pressure.
Case history 2, women, the age 55 years old, craniocerebral injury was postoperative.
As a result: by this patient postoperative 36 hours intracranial pressure ICP mean values, cerebral blood oxygen saturation RSO2Mean value is averagely moved
Pulse pressure MAP mean value is analyzed, and as a result see the table below:
The intracranial pressure diversity factor that the intracranial pressure and invasive method detected as can be seen from the above table by this method detects exists
Within positive and negative 5%, difference is not significant, belongs to nominal error range.It can be seen that passing through a kind of intracranial pressure noninvasive prison of this programme
Device and intracranial pressure noninvasive monitoring device method are surveyed, real-time monitoring can be carried out to intracranial pressure.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Claims (4)
1. a kind of intracranial pressure noninvasive monitoring device, it is characterised in that: including being visited according to sequentially connected near-infrared blood oxygen saturation detection
Head, blood oxygen AD conversion module, microprocessor and display screen, and according to sequentially connected blood pressure detector, blood pressure AD conversion mould
Block and microprocessor；The oxygen saturation signal that the near-infrared blood oxygen saturation detection probe will test passes after analog-to-digital conversion
Microprocessor is transported to, the mean arterial pressure signal that the blood pressure detector will test is transmitted to micro process after analog-to-digital conversion
Device, the microprocessor carry out data processing, and by after data processing as the result is shown on display screen.
2. a kind of intracranial pressure noninvasive monitoring device according to claim 1, it is characterised in that: the near-infrared blood oxygen saturation
The capable of emitting two kinds of different wave length near infrared lights of light source in detection probe, two photodetectors apart from light source side are for connecing
The near infrared light returned；Two photodetectors are respectively shallow layer tissue's photodetector and deep tissues photodetector,
The distance between shallow layer tissue's photodetector and light-emitting component are less than between deep tissues photodetector and light-emitting component
Distance.
3. a kind of intracranial pressure noninvasive monitoring device according to claim 1, it is characterised in that: the display screen is also used to show
Show the blood oxygen saturation that infrared blood oxygen saturation detection probe detects and the Mean Arterial that display of blood pressure detection device detects
Pressure.
4. a kind of intracranial pressure noninvasive monitoring device according to claim 1, it is characterised in that: it further include communication module, institute
It states communication module to be connected with the microprocessor, blood oxygen saturation, mean arterial pressure and the meter that the communication module will test
Obtained intracranial pressure is sent to hospital management system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821289134.XU CN209450518U (en) | 2018-08-10 | 2018-08-10 | A kind of intracranial pressure noninvasive monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821289134.XU CN209450518U (en) | 2018-08-10 | 2018-08-10 | A kind of intracranial pressure noninvasive monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11992302B2 (en) | 2020-01-03 | 2024-05-28 | Vivonics, Inc. | System and method for non-invasively determining an indication and/or an assessment of intracranial pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11992302B2 (en) | 2020-01-03 | 2024-05-28 | Vivonics, Inc. | System and method for non-invasively determining an indication and/or an assessment of intracranial pressure |
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Inventor after: Wu Xi Inventor after: Peng Yi Inventor after: He Peiyao Inventor before: Wu Xi Inventor before: San Ji Shu Inventor before: Tan Binbin Inventor before: Peng Yi Inventor before: He Peiyao |
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