CN109452927A - A kind of foveal region of retina arterial pressure measurement protective device and guard method - Google Patents
A kind of foveal region of retina arterial pressure measurement protective device and guard method Download PDFInfo
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- CN109452927A CN109452927A CN201811484860.1A CN201811484860A CN109452927A CN 109452927 A CN109452927 A CN 109452927A CN 201811484860 A CN201811484860 A CN 201811484860A CN 109452927 A CN109452927 A CN 109452927A
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- 210000001525 retina Anatomy 0.000 title claims abstract description 37
- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 30
- 230000004872 arterial blood pressure Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000001681 protective effect Effects 0.000 title description 6
- 230000003321 amplification Effects 0.000 claims abstract description 43
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 43
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000002775 capsule Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 210000005252 bulbus oculi Anatomy 0.000 description 4
- 210000001508 eye Anatomy 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 230000036770 blood supply Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035485 pulse pressure Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 206010003210 Arteriosclerosis Diseases 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 208000011775 arteriosclerosis disease Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000001715 carotid artery Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 230000035487 diastolic blood pressure Effects 0.000 description 1
- 230000003205 diastolic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 210000001927 retinal artery Anatomy 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02216—Ophthalmodynamometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Physics & Mathematics (AREA)
- Cardiology (AREA)
- Biophysics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Vascular Medicine (AREA)
- Physiology (AREA)
- Pathology (AREA)
- Ophthalmology & Optometry (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Psychiatry (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The invention discloses a kind of foveal region of retina arterial pressure measurement double protecting device and guard methods, device includes microprocessor module, pressure amplification circuit module, pressure sensor, survey pressure cylinder, air pump, air valve and survey pressuring gasbag, microprocessor module, pressure amplification circuit module and pressure sensor are sequentially connected, microprocessor module respectively with air pump, air valve is connected, pressure sensor, survey pressure cylinder, air pump, air valve is connected to survey pressuring gasbag by gas circuit, first threshold is provided in microprocessor module, once the pressure signal of pressure amplification circuit module input is more than first threshold, then microprocessor module control air pump stops working and opens air valve.Two-way independent pressure detection device is arranged in the present invention, in the case where the failure of device for pressure measurement all the way, second road device for pressure measurement can intervene work, the probability that may be injured to human eye in the case where gas pressure is excessive is thus substantially reduced, the safety of foveal region of retina angiosthenia meter is improved.
Description
Technical field
The present invention relates to medical detection technologies, and in particular to a kind of foveal region of retina arterial pressure measurement protective device and
Guard method.
Background technique
The artery of eye ground is the blood vessel that Whole Body uniquely can see, hypertension, artery sclerosis, diabetes etc.
It will lead to the variation of foveal region of retina angiosthenia, foveal region of retina angiosthenia exceeds a certain range, will cause to visual function
Damage, needs to take positive treatment means in time.Therefore, clinically if foveal region of retina angiosthenia can be measured directly,
Help to quantify retinal arteriosclerosis degree and assess injury of carotid artery blood flow, provides evaluation measures to treatment.
A kind of ophthalmodynamometer (ophthalmodynamometer, ODM) configured with Goldmann contact lense
Can more intuitive and accurate measurement arter centralis retinae pressure, pass through this tool measure arter centralis retinae diastolic pressure
(diastolic central retinal artery pressure, diastCRAP) is for evaluation CAS operation for eye
The influence of blood supply state has important hints effect.When pressure is applied to eyeball surface by a plunger, operator uses one
A hand-held amplifying device (ophthalmoscope) observes the blood flow of arteria retina, judges that foveal region of retina is dynamic by the blocking of blood flow
Pulse pressure.The blood supply of eye and brain derives from arteria carotis,
ODM needs professional to operate when operating, and measurement process is cumbersome, different operation personnel's eyesight, the factors such as attention
It will affect measurement result, measurement error is big, and consistency is poor.Therefore, it is necessary to a kind of equipment for capableing of automatic measurement is invented, gram
It takes measuring device existing for ODM and measurement method measurement error is big, measuring process is cumbersome, be easy to cause infection, measurement cost high
Defect.As shown in Figure 1, a kind of foveal region of retina angiosthenia meter adjusts measuring table by single-chip microcontroller control stepper motor,
Make to survey pressuring gasbag alignment eyeball, air bag is inflated by air pump, after reaching certain pressure, is deflated by valve to air bag, operation
Process is simple and fast；Foveal region of retina arterial pressure signal is become by electric signal by pressure sensor during inflatable and deflatable,
It after filtering, amplifying, is input in single-chip microcontroller by data processing, it is dynamic finally to directly display foveal region of retina on a display screen
The value of pulse pressure, facilitates operator to read；After being measured, system opens air valve by single-chip microcontroller, surveys pressuring gasbag and deflates, then
Stepper motor is controlled, makes to survey pressuring gasbag retrogressing, retracts initial position；For use next time.The foveal region of retina of the prior art is dynamic
Sphygmobolometer does not have over-pressure safety device, once gas pressure is excessively high may to injure eyeball, therefore urgently improves.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the deficiencies of the prior art, providing a kind of foveal region of retina artery
Pressure measurement double protecting device and guard method, overcome the foveal region of retina angiosthenia meter of the prior art not have overvoltage protection dress
It sets, once the excessively high defect that may injure eyeball of gas pressure.
The present invention to solve above-mentioned technical problem used by technical solution are as follows:
A kind of foveal region of retina arterial pressure measurement double protecting device, including microprocessor module, pressure amplifying circuit mould
Block, pressure sensor survey pressure cylinder, air pump, air valve and survey pressuring gasbag, the microprocessor module, the pressure amplifying circuit mould
Block and the pressure sensor are sequentially connected, and the microprocessor module is connected with the air pump, the air valve respectively, the pressure
Force snesor, the survey pressure cylinder, the air pump, the air valve and the survey pressuring gasbag are connected to by gas circuit, the microprocessor
First threshold is provided in module, once the pressure signal of pressure amplification circuit module input is more than first threshold, then institute
The microprocessor module control air pump is stated to stop working and open the air valve.
It according to a particular embodiment of the invention, further include second pressure amplification circuit module, second pressure sensor and
Two air valves, second pressure sensor, second pressure amplification circuit module and the second air valve are sequentially connected, the second air valve and the second pressure
Force snesor, the survey pressure cylinder, the air pump and the survey pressuring gasbag are connected to by gas circuit, pass through second pressure amplifying circuit mould
Voltage threshold is arranged in block, once the pressure signal of second pressure amplification circuit module detection is more than voltage threshold, then second pressure
Amplification circuit module opens the second air valve.
According to a particular embodiment of the invention, the voltage threshold is greater than the voltage signal for determining first threshold.
A kind of foveal region of retina arterial pressure measurement double protection method, comprising steps of
A1, first threshold is set in microprocessor module；
The pressure signal that A2, pressure amplification circuit module are input to the microprocessor module is more than first threshold；
A3, microprocessor module output control signal make air pump stop working；
A4, microprocessor module output control signal, open air valve.
According to a particular embodiment of the invention, comprising steps of
Voltage threshold is arranged in B1, second pressure amplification circuit module；
The pressure signal that B2, second pressure amplification circuit module detect is more than voltage threshold；
B3, second pressure amplification circuit module open the second air valve.
According to a particular embodiment of the invention, the voltage threshold is greater than the voltage signal for determining first threshold.
Implement technical solution of the present invention, present invention setting two-way pressure-detecting device is had the advantages that, one
In the case that road device for pressure measurement fails, the second road device for pressure measurement can intervene work, thus substantially reduce in gas
The probability that may be injured to human eye in the case that body pressure is excessive, improves the safety of foveal region of retina angiosthenia meter.
Detailed description of the invention
It is specifically described the present invention below with reference to attached drawing and in conjunction with example, advantages of the present invention and implementation will
It is more obvious, wherein content only for the purpose of explanation of the present invention shown in attached drawing, without constitute to it is of the invention in all senses
On limitation, in the accompanying drawings:
Fig. 1 is prior art foveal region of retina arterial pressure measurement instrument module diagram；
Fig. 2 is foveal region of retina arterial pressure measurement double protecting device schematic diagram of the present invention；
Fig. 3 is foveal region of retina arterial pressure measurement double protecting device microprocessor schematic diagram of the present invention；
Fig. 4 is foveal region of retina arterial pressure measurement double protecting device pressure amplifying circuit schematic diagram of the present invention；
Fig. 5 is foveal region of retina arterial pressure measurement double protecting device independent pressure amplifying circuit schematic diagram of the present invention；
Fig. 6 is foveal region of retina arterial pressure measurement double protecting device adjustable voltage circuit schematic diagram of the present invention；
Fig. 7 is foveal region of retina arterial pressure measurement double protecting device air pump of the present invention and air valve control circuit figure；
Fig. 8 is foveal region of retina arterial pressure measurement double protection method flow chart of the present invention.
Specific embodiment
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, foveal region of retina arterial pressure measurement duplicate protection dress of the present invention
It sets, including microprocessor module, pressure amplification circuit module, pressure sensor, survey pressure cylinder, air pump, air valve and survey pressuring gasbag, it is micro-
Processor module, pressure amplification circuit module and pressure sensor are sequentially connected, microprocessor module respectively with air pump, air valve phase
Even, pressure sensor, survey pressure cylinder, air pump, air valve and survey pressuring gasbag are connected to by gas circuit, and first is provided in microprocessor module
Threshold value, once the pressure signal of pressure amplification circuit module input is more than first threshold, then microprocessor module control air pump stops
It only works and opens air valve.According to a particular embodiment of the invention, a kind of foveal region of retina arterial pressure measurement double protecting device,
Including microprocessor module, pressure amplification circuit module, pressure sensor, survey pressure cylinder, air pump, air valve and survey pressuring gasbag, micro- place
Reason device module, pressure amplification circuit module and pressure sensor are sequentially connected, microprocessor module respectively with air pump, air valve phase
Even, pressure sensor, survey pressure cylinder, air pump, air valve and survey pressuring gasbag are connected to by gas circuit, and first is provided in microprocessor module
Threshold value, once the pressure signal of pressure amplification circuit module input is more than first threshold, then microprocessor module control air pump stops
It only works and opens air valve.It according to a particular embodiment of the invention, further include second pressure amplification circuit module, second pressure biography
Sensor and the second air valve, second pressure sensor, second pressure amplification circuit module and the second air valve are sequentially connected, the second air valve
It is connected to second pressure sensor, survey pressure cylinder, air pump and survey pressuring gasbag by gas circuit, is set by second pressure amplification circuit module
Voltage threshold is set, once the pressure signal of second pressure amplification circuit module detection is more than voltage threshold, then second pressure is amplified
Circuit module opens the second air valve.Voltage threshold is greater than the voltage signal for determining first threshold.
As shown in figure 8, foveal region of retina arterial pressure measurement double protection method of the present invention, comprising steps of
A1, first threshold is set in microprocessor module；
The pressure signal that A2, pressure amplification circuit module are input to microprocessor module is more than first threshold；
A3, microprocessor module output control signal make air pump stop working；
A4, microprocessor module output control signal, open air valve.
According to a particular embodiment of the invention, it further comprises the steps of:
Voltage threshold is arranged in B1, second pressure amplification circuit module；
The pressure signal that B2, second pressure amplification circuit module detect is more than voltage threshold；
B3, second pressure amplification circuit module open the second air valve.
Voltage threshold is greater than the voltage signal for determining first threshold.
As shown in Fig. 2, foveal region of retina arterial pressure measurement duplicate protection of the present invention include pressure amplification circuit module and solely
Pressure is amplified in vertical pressure amplification circuit module, two-way pressure measurement circuitry, two-way valve, wherein pressure amplification circuit module output
Signal is to microprocessor；Microprocessor connects air pump and air valve, and independent amplification circuit module connects independent air valve.
As shown in figure 3, in figure Analog-digital Converter channel input pressure amplification circuit module pressure signal, will simulation letter
Number digital signal is converted to, pressure value is calculated according to algorithm, if pressure is more than first threshold, output Air Valve Control signal is beaten
Air valve is opened, output air pump controls signal-off air pump.
As shown in figure 4, pressure amplification circuit module include pressure sensor driving circuit, amplifier circuit U1A, U1B,
Air pressure is switched to electric signal by U2B, filtering and amplifying circuit U3A, pressure sensor U7, and electric signal enters three amplifier U1A, U1B, U2B
The amplifier of composition, amplified signal enter filtering and amplifying circuit U3A and amplify and filter, then output pressure simulation letter
Number enter the AD conversion channel of microprocessor, analog signal is converted to digital signal, obtains pressure value by algorithm process.
As shown in figure 5, independent pressure amplification circuit module includes individual pressure sensors driving circuit, differential amplifier circuit
Air pressure is switched to electric signal by U5A, U5B, comparator circuit U6B, pressure sensor U12, and electric signal enters the difference of U5A, U5B composition
Input comparator U6B, pressure signal after amplification are poor simultaneously by the voltage signal B of point amplifier, amplified signal and input
Value is more than after voltage signal B, and comparator U6B overturning outputs a control signal to independent air valve, opening air valve.With voltage signal B
Size variation, the threshold value of independent pressure amplifying circuit is also different, the threshold of voltage signal B decision systems independent protective pressure system
Value.
As shown in fig. 6, VCC voltage is after adjustable rheostat R9 and fixed resistance R4 partial pressure, it is defeated by follower U13A
Voltage signal B out, voltage signal B decision systems independent protective pressure system threshold value can be by adjusting adjustable rheostat R9's
Resistance value, the independent protective pressure system threshold value for determining output voltage signal B are greater than the first threshold of microprocessor storage.
As shown in fig. 7, air pump connects microprocessor with air valve control line, independent Air Valve Control line is put from independent pressure
Big circuit module, openable independent air valve.
Those skilled in the art do not depart from essence and spirit of the invention, can there are many deformation scheme realize the present invention,
The foregoing is merely preferably feasible embodiments of the invention, and not thereby limiting the scope of the invention, all with this
The variation of equivalent structure made by description of the invention and accompanying drawing content, is intended to be included within the scope of the present invention.
Claims (6)
1. a kind of foveal region of retina arterial pressure measurement double protecting device, it is characterised in that: put including microprocessor module, pressure
Big circuit module, pressure sensor survey pressure cylinder, air pump, air valve and survey pressuring gasbag, and the microprocessor module, the pressure are put
Big circuit module and the pressure sensor are sequentially connected, the microprocessor module respectively with the air pump, the air valve phase
Even, the pressure sensor, the survey pressure cylinder, the air pump, the air valve and the survey pressuring gasbag are connected to by gas circuit, described
First threshold is provided in microprocessor module, once the pressure signal of pressure amplification circuit module input is more than the first threshold
Value, then the microprocessor module controls the air pump and stops working and open the air valve.
2. foveal region of retina arterial pressure measurement double protecting device according to claim 1, it is characterised in that: further include
Two pressure amplification circuit modules, second pressure sensor and the second air valve, second pressure sensor, second pressure amplifying circuit mould
Block and the second air valve are sequentially connected, and the second air valve is calmed the anger with second pressure sensor, the survey pressure cylinder, the air pump and the survey
Capsule is connected to by gas circuit, and voltage threshold is arranged by second pressure amplification circuit module, once second pressure amplification circuit module
The pressure signal of detection is more than voltage threshold, then second pressure amplification circuit module opens the second air valve.
3. foveal region of retina arterial pressure measurement double protecting device according to claim 2, it is characterised in that: the voltage
Threshold value is greater than the voltage signal for determining first threshold.
4. a kind of foveal region of retina arterial pressure measurement double protection method, which is characterized in that comprising steps of
A1, first threshold is set in microprocessor module；
The pressure signal that A2, pressure amplification circuit module are input to the microprocessor module is more than first threshold；
A3, microprocessor module output control signal make air pump stop working；
A4, microprocessor module output control signal, open air valve.
5. foveal region of retina arterial pressure measurement double protection method according to claim 4, which is characterized in that including step
It is rapid:
Voltage threshold is arranged in B1, second pressure amplification circuit module；
The pressure signal that B2, second pressure amplification circuit module detect is more than voltage threshold；
B3, second pressure amplification circuit module open the second air valve.
6. foveal region of retina arterial pressure measurement double protection method according to claim 5, it is characterised in that: the voltage
Threshold value is greater than the voltage signal for determining first threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484860.1A CN109452927A (en) | 2018-11-30 | 2018-11-30 | A kind of foveal region of retina arterial pressure measurement protective device and guard method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484860.1A CN109452927A (en) | 2018-11-30 | 2018-11-30 | A kind of foveal region of retina arterial pressure measurement protective device and guard method |
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| CN109452927A true CN109452927A (en) | 2019-03-12 |
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| CN201811484860.1A Pending CN109452927A (en) | 2018-11-30 | 2018-11-30 | A kind of foveal region of retina arterial pressure measurement protective device and guard method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566943A (en) * | 2022-02-23 | 2022-05-31 | 睿士医疗科技(浙江)有限公司 | Overvoltage protection system of hardware |
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| CN1187760A (en) * | 1995-04-21 | 1998-07-15 | 伯恩哈德·洛 | Ophthalmodynamometer and its process of operation |
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| CN107569208A (en) * | 2017-08-25 | 2018-01-12 | 深圳市眼科医院 | A kind of noninvasive eye socket pressure measuring device and measuring method |
| CN108185985A (en) * | 2018-01-26 | 2018-06-22 | 深圳市眼科医院 | A kind of noninvasive eye socket pressure measures double protecting device and guard method |
| CN108309230A (en) * | 2018-01-26 | 2018-07-24 | 深圳市眼科医院 | It is a kind of to measure double protecting device and guard method using the noninvasive eye socket pressure of microcontroller |
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2018
- 2018-11-30 CN CN201811484860.1A patent/CN109452927A/en active Pending
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| US3929124A (en) * | 1974-05-01 | 1975-12-30 | Us Navy | Opthalmodynamometer |
| CN1187760A (en) * | 1995-04-21 | 1998-07-15 | 伯恩哈德·洛 | Ophthalmodynamometer and its process of operation |
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| CN108185985A (en) * | 2018-01-26 | 2018-06-22 | 深圳市眼科医院 | A kind of noninvasive eye socket pressure measures double protecting device and guard method |
| CN108309230A (en) * | 2018-01-26 | 2018-07-24 | 深圳市眼科医院 | It is a kind of to measure double protecting device and guard method using the noninvasive eye socket pressure of microcontroller |
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| Title |
|---|
| 张国辉: "眼动脉压测量", 《医学通讯》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566943A (en) * | 2022-02-23 | 2022-05-31 | 睿士医疗科技(浙江)有限公司 | Overvoltage protection system of hardware |
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Application publication date: 20190312 |