CN118476806A - Ocular vascular blood oxygen saturation tester and detection method thereof - Google Patents
Ocular vascular blood oxygen saturation tester and detection method thereof Download PDFInfo
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- CN118476806A CN118476806A CN202410604031.1A CN202410604031A CN118476806A CN 118476806 A CN118476806 A CN 118476806A CN 202410604031 A CN202410604031 A CN 202410604031A CN 118476806 A CN118476806 A CN 118476806A
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- 108010054147 Hemoglobins Proteins 0.000 description 2
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses an ocular surface vascular blood oxygen saturation tester and a detection method thereof, belonging to the technical field of medical appliances. The ocular surface vascular blood oxygen saturation tester comprises a testing shell, wherein the top of the testing shell is connected with a top panel, a hollow elliptic cylinder-shaped testing hole is formed in the bottom of the testing shell, and the top panel, the testing shell and the hollow elliptic cylinder-shaped testing hole are enclosed to form a light-shielding testing cavity; the inside light source module, signal processing module, signal acquisition module and the data processing module that connect gradually that are equipped with of survey casing, light source module set up at hollow elliptic cylinder shape detection hole top, and the display screen is connected to the data processing module. The ocular surface blood vessel oxygen saturation measuring instrument has the advantages of small volume, light weight, simple operation, low use threshold, wide application range and strong pertinence, can directly display blood vessel oxygen saturation data in front of eyes without directly contacting the eyeballs, reduces the damage of measurement to eyes, and can quickly obtain accurate ocular surface blood oxygen saturation measuring results.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an ocular surface vascular blood oxygen saturation tester and a detection method thereof.
Background
Blood oxygen saturation, which is the percentage of the volume of oxyhemoglobin (HbO 2) bound to oxygen in blood to the volume of total bound hemoglobin (Hb), is an important physiological data in clinical medicine. The blood oxygen saturation detector can accurately and timely detect the blood oxygen saturation, and is an important clinical medical device.
The existing blood oxygen saturation measuring instrument is mainly applicable to fingertips or arms and is mainly used for measuring blood oxygen saturation of blood in microcirculation in the whole circulation of a human body. Because the blood vessels of the ocular surface are abundant and the positions of the ocular surface are shallow, the microcirculation of the ocular surface blood vessels is closely related to various ocular diseases such as glaucoma, diabetes related ocular diseases, hypertension related ocular diseases and the like, so that the accurate measurement of the blood oxygen saturation of the ocular surface blood vessels has important clinical significance, but the existing blood oxygen saturation measuring instrument for fingertips or arms cannot directly and accurately measure the blood oxygen saturation of the ocular surface.
Although known optical correlation tomographic angiography techniques, retinal function imagers, etc. can be used for measurement of conjunctival microcirculation, there are the following disadvantages: firstly, the method is mainly used for retina and choroid, is not optimized for anterior segment of eyes, and is difficult to accurately measure vascular blood oxygen of ocular surface (anterior part of eyes); secondly, only blood vessel imaging is carried out, blood oxygen saturation data can not be directly displayed, and the blood oxygen data can be obtained only by further analysis and treatment, so that the method is complex and complicated; thirdly, the instrument is precise and expensive in manufacturing cost, and the operator is required to have a certain knowledge reserve, so that the popularization range is limited.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an ocular surface vascular oxygen saturation tester and a detection method thereof, which solve the technical problems that the existing measuring instrument can not directly, accurately and rapidly measure the oxygen saturation of the ocular surface and has small application range.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
The invention discloses an ocular surface vascular blood oxygen saturation tester, which comprises a testing shell, wherein the top of the testing shell is connected with a top panel, a hollow elliptic cylinder-shaped testing hole is arranged at the bottom of the testing shell, and the top panel, the testing shell and the hollow elliptic cylinder-shaped testing hole are enclosed to form a light-proof testing cavity;
The inside light source module, signal processing module, signal acquisition module and the data processing module that connect gradually that are provided with of survey casing, light source module set up at hollow elliptic cylinder shape detection hole top, and the display screen is connected to the data processing module.
Preferably, the light source module includes a light source emitter and a light source receiver, each of which is disposed toward the ocular surface.
Further preferably, both the light source transmitter and the light source receiver employ a MAX30102 blood oxygen concentration sensor.
Preferably, the signal processing module is disposed on the circuit board.
Further preferably, the signal processing module comprises a signal amplifying unit, a filtering unit and an A/D conversion circuit which are sequentially connected, wherein the signal amplifying unit is connected with the light source module, and the A/D conversion circuit is connected with the signal acquisition module.
Preferably, the signal acquisition module comprises a single chip microcomputer.
Preferably, the data processing module comprises a computer, blood oxygen concentration data processing software is installed in the computer, and the computer is connected with the display screen.
Preferably, both the top panel and the assay housing are made of black ABS plastic.
Preferably, the radial diameter of the hollow elliptic cylindrical detection hole is 2.6-4.3 cm.
Preferably, a switch control key is further arranged on the top panel, and the switch control key is connected with the circuit board.
Preferably, the side surface of the measuring shell is provided with a screw hole; the measuring shell is connected with a grab handle fixing plate through a screw hole, and the grab handle fixing plate is connected with a handheld grab handle.
According to the second aspect of the invention, the detection method of the ocular surface vascular blood oxygen saturation detector is disclosed, the position of a hollow elliptic cylinder-shaped detection hole at the bottom of a detection shell is tightly attached to the skin of an eye, the eyes are opened, the ocular surface vascular blood oxygen saturation detector is started, an incident light is emitted by a light source module to reach an ocular surface vascular of an operator, a reflected light signal modulated by blood flow in an ocular surface vascular bed is collected and converted into an electric signal, then the electric signal is amplified, filtered and converted into a digital signal by a signal processing module, the signal is collected by a signal collecting module, and after the signal is processed by a data processing module, measurement data are displayed on a display screen.
Compared with the prior art, the invention has the following beneficial effects:
The invention provides an ocular surface vascular oxygen saturation tester, which comprises a top panel, a testing shell and a hollow elliptic cylinder-shaped testing hole, wherein the top panel, the testing shell and the hollow elliptic cylinder-shaped testing hole are enclosed to form a light-shielding testing cavity for testing ocular surface vascular oxygen saturation, the brightness of testing light is small, the discomfort of users is weak, and the testing accuracy is high. 2. The ocular surface blood vessel blood oxygen saturation testing system is composed of the light source module, the signal processing module, the signal acquisition module and the data processing module, and can realize rapid and accurate measurement of ocular surface blood oxygen saturation. 3. According to the special structure of the eye surface, the light source module is arranged at the top of the hollow elliptic cylindrical detection hole and is separated from the signal processing unit on the circuit board, and the damage to eyes in the measuring process can be reduced by non-contact measurement. 4. The top panel can visually display the measurement result of the ocular surface vascular blood oxygen saturation testing system, does not need to additionally process measurement data, is easy to operate and has a low use threshold. 5. The hollow elliptic cylindrical detection hole is attached to the skin of the eyes of an operator, so that the use sense of the operator is improved, and the measurement accuracy is improved. The measuring instrument has the advantages of small volume, light weight, wide application range and strong pertinence, can directly display blood vessel oxygen saturation data in front of eyes without directly contacting eyeballs, reduces the damage of measurement to eyes, simultaneously rapidly obtains accurate measurement results of blood oxygen saturation of the surface of eyes, and is suitable for clinical medical treatment and household use.
Further, the black ABS plastic can ensure that the meter has good light-shielding properties.
The invention provides a detection method of an ocular surface vascular blood oxygen saturation tester, which utilizes a reflection type blood oxygen saturation measurement principle to directly emit incident light to ocular surface blood vessels and collect reflection light signals modulated by blood flow in an ocular surface vascular bed, thereby accurately collecting vascular blood oxygen of ocular surfaces (front parts of eyes); the collected reflected light signals are converted into electric signals, then the electric signals are amplified by the signal processing module in sequence, high-frequency noise interference is eliminated, digital signals for processing are obtained by the signal collecting module and the data processing module, and accurate detection data are directly and quickly displayed on a display screen without further data analysis and processing.
Drawings
FIG. 1 is a schematic diagram of the system for measuring the blood oxygen saturation of the ocular surface vessels;
Fig. 2 is a schematic 3D structure diagram of an ocular surface vascular oxygen saturation measuring instrument provided by the invention;
FIG. 3 is a side view of an ocular surface vascular oximetry unit according to the present invention;
Fig. 4 is a schematic 3D structure diagram of a measurement housing in the ocular surface vascular oximetry device provided by the present invention;
FIG. 5 is a side view of the measurement housing of the ocular surface vascular oximetry unit according to the present invention;
FIG. 6 is a schematic view of the 3D structure of the top panel in the Ocular vascular oximetry provided by the present invention;
FIG. 7 is a top view of the top panel of the ocular surface vascular oximetry meter provided by the present invention;
FIG. 8 is a schematic view of a 3D structure of a handheld device connected with an Ocular vascular oximetry device according to the present invention;
fig. 9 is a schematic view of a 3D structure of an eye surface vascular oximetry device mounting handheld device according to the present invention.
Wherein: 11-top panel; 111-switch control keys; 112-a display screen; 113-a data line lead-out hole; 12-a measurement housing; 121-circuit board placement; 13-a light source module; 131-a light source emitter; 132-a light source receiver; 14-a hand-held device; 141-holding a handle; 142-a handle fixing plate; 151-a signal amplifying unit; 152-a filtering unit; 153-A/D conversion circuit; 16-a signal acquisition module; 17-a data processing module.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the attached drawing figures:
the invention provides an eye surface vascular blood oxygen saturation measuring system, which is shown in fig. 1, and comprises a light source module 13, a signal processing module, a signal acquisition module 16 and a data processing module 17.
The light source module 13 is arranged opposite to the eye surface and comprises a light source emitter 131 and a light source receiver 132, wherein the light source emitter 131 is used for emitting incident light to the blood vessel of the eye surface, and the light source emitted by the light source emitter 131 is generated by a driving circuit to generate sequential pulses and drive two light emitting diodes with different wavelengths on the sensor. The light source receiver 132 is used to collect reflected light signals modulated by blood flow in the ocular surface vascular bed and convert the reflected light signals into electrical signals. The light source receiver 132 is preferably a photodiode and is located on the same surface as the light source emitter 131.
The signal processing module comprises a signal amplifying unit 151, a filtering unit 152 and an A/D conversion circuit 153 which are sequentially connected, wherein the signal amplifying unit 151 is connected with the light source receiver 132, and the A/D conversion circuit 153 is connected with the signal acquisition module 16; the signal amplifying unit 151 is used to amplify the weak electrical signal transmitted from the light source receiver 132. The filtering unit 152 is used for eliminating high-frequency noise interference and acquiring direct current and alternating current components required by calculation. The a/D conversion circuit 153 is used for converting an electrical signal into a digital signal.
The signal acquisition module 16 is used for managing various functions of the system, acquiring digital signals transmitted by the a/D conversion circuit 153, and transmitting the acquired signals to the data processing module 17. The signal acquisition module 16 is a single-chip microcomputer.
The data processing module 17 is used for converting the digital signal transmitted by the signal acquisition module 16 into an ocular surface vascular oxygen saturation value. The data processing module 17 includes data processing software and a computer.
The invention provides a method for measuring the blood oxygen saturation of an ocular surface blood vessel, which comprises the following steps:
1) Signal conversion: the light source emitter 131 emits incident light to the ocular surface blood vessel, and after the incident light passes through the ocular surface, the reflected light signal modulated by blood flow in the ocular surface vascular bed is collected from the light source receiver 132 due to absorption and scattering of light by ocular surface tissue and converted into an electrical signal;
2) Signal amplification and separation: the electric signal transmitted by the light source receiver 132 firstly amplifies the weak electric signal through a pre-amplifying circuit to inhibit common mode interference; then, a synchronous detection positive/negative polarity switching circuit is adopted to separate the dim light signal from the useful signal;
3) Active filtering: the interference of high-frequency noise in the volume pulse wave signal is eliminated by adopting low-pass filtering, the alternating current component required by calculating the pulse oximetry is obtained by adopting high-pass filtering, and the processed electric signal is converted into a digital signal by utilizing an A/D conversion circuit 153;
4) And (3) data processing: the converted digital signals are collected by the signal collection module 16 and sent to the data processing module 17 for processing in a serial communication mode, and finally the ocular surface vascular blood oxygen saturation is obtained.
Example 1
The utility model provides an ocular surface vascular blood oxygen saturation tester, as shown in fig. 2-5, including survey casing 12, survey casing 12 top is connected with top panel 11, and the side is connected with hand-held device 14, and the bottom is provided with hollow elliptic cylinder shape detection hole, and top panel 11, survey casing 12 and hollow elliptic cylinder shape detection hole enclose and form the light-proof detection cavity. The top panel 11 and the measurement housing 12 are both made of black ABS plastic.
A top panel 11 for controlling the ocular surface vascular oxygen saturation test system and displaying the measured data. As shown in fig. 6 and 7, the top panel 11 has a square structure with a cross section of 6.7x6.7cm, a cylindrical cavity and a rectangular cavity are formed by recessing inwards, and a switch control key 111 with a diameter of 4mm and a height of 4mm is embedded in the cylindrical cavity for controlling the operation and the stop of the ocular surface vascular oxygen saturation testing system; a display screen 112 made of a liquid crystal material with a transverse section of 2.7 multiplied by 2.5cm is embedded in the rectangular concave cavity and is used for displaying the measured ocular surface blood oxygen saturation data; the design of the concave cavity can prevent the switch control key at the top and the liquid crystal display panel from being separated automatically. The top panel 11 is also provided with a data line leading-out hole 113 with the diameter of about 6.1mm for converging and connecting a power supply and a data line of an ocular surface vascular oxygen saturation testing system.
The measurement housing 12 is used for accommodating an ocular surface vascular oxygen saturation testing system. The inside of the measurement shell 12 is provided with a light source emitter 131, a light source receiver 132, a circuit board, a singlechip and a computer which are connected in sequence, and the light source emitter 131, the light source receiver 132, the circuit board, the singlechip and the computer jointly form an ocular surface vascular blood oxygen saturation testing system. The light source emitter 131 and the light source receiver 132 are both provided with the MAX30102 blood oxygen concentration sensor, the light source emitter 131 and the light source receiver 132 are located on the same surface and are both arranged at the top of the hollow elliptic cylinder-shaped detection hole (namely, one end of the hollow elliptic cylinder-shaped detection hole, which is far away from the skin of the eyes of an operator), the light source emitter 131 can emit incident light to the skin of the eyes, and the light source receiver 132 can receive the incident light scattered by the skin of the eyes. The circuit board size was 5.1X3.1 cm, and a HU0025 development board was used and placed at the circuit board placement site 121. The circuit board is integrated with a signal amplifying unit 151, a filtering unit 152, and an a/D conversion circuit 153 connected in order. The single chip microcomputer can process data transmitted on the circuit board. The computer is internally provided with blood oxygen concentration data processing software, the computer can convert digital signals transmitted by the singlechip into ocular surface blood vessel blood oxygen saturation values, and data obtained by the ocular surface blood vessel blood oxygen saturation testing system can be transmitted to the display screen 112 through a data line passing through the data line leading-out hole 113. Screw holes are formed in the side face of the measurement housing 12, and the measurement housing 12 is connected to the handheld device 14 through the screw holes.
A hand-held device 14 for holding an ocular surface vascular oximetry. As shown in fig. 8 and 9, the hand-held device 14 includes a handle fixing plate 142 and a hand-held handle 141, wherein the handle fixing plate 142 is provided with a through hole matching with a screw hole provided on the side surface of the measurement housing 12, and the handle fixing plate 142 is fixed on the side surface of the measurement housing 12 by a screw. The hand grip 141 is integrally formed with the grip fixing plate 142. In use, the screw is inserted through the through hole of the handle fixing plate 142 and fixed in the screw hole on the side of the measurement housing 12, thereby fixing the hand-held device 14. Thereafter, the user holds the ocular surface vascular oximetry device with the hand-held device 14 for measurement.
The hollow elliptic cylindrical detection hole can be well attached to the skin of the eyes, and the influence of external light injection or internal light leakage on measurement accuracy is avoided. The hollow elliptic cylindrical detection hole is made of rubber materials, and can be suitable for operators with different bone types; the radial diameter of the hollow elliptic cylindrical detection hole is 2.6-4.3 cm.
The ocular surface vascular blood oxygen saturation tester needs to adjust parameters before primary use, and the parameter adjusting steps are as follows: 1. selecting a blood oxygen saturation simulator: the simulator selects simulator CO-oximeter that is verified, accurate, and reliable to ensure that it has been calibrated and is within the expiration date. Confirm MAX30102 status: ensuring that the blood oxygen concentration data processing software functions normally, and all hardware and software have been set and updated according to the manufacturer's instructions. Environmental control: an environment with stable temperature, humidity and illumination is selected for calibration to reduce the influence of external variables. 2. Calibration CO-oximeter. Preheating CO-oximeter: the equipment is preheated according to manufacturer's suggestion, ensures its stability and measurement accuracy. Introducing standard gas: CO-oximeter was calibrated using a series of standard gas mixtures of different oxygen concentrations. Recording and comparing: the reading of CO-oximeter was recorded and compared to the known concentration of the gas mixture to verify the accuracy of the device. 3. And (5) calibrating blood oxygen concentration data processing software. Setting blood oxygen concentration data processing software: parameters of blood oxygen concentration data processing software, such as LED current, sampling rate, filter settings, and ambient light compensation, are adjusted to optimize signal quality and signal-to-noise ratio. Comparison measurements were made: at the same time point, the ocular surface vascular oximetry and CO-oximeter were placed in the same test environment and blood oxygen concentration data processing software and CO-oximeter blood oxygen saturation readings were recorded. Data analysis: and analyzing the reading difference of the blood oxygen concentration data processing software and the CO-oximeter to determine the accuracy of the blood oxygen concentration data processing software. 4. And (5) parameter adjustment. Adjusting blood oxygen concentration data processing software: and according to the data analysis result, adjusting parameters of blood oxygen concentration data processing software to reduce the difference between the parameters and the CO-oximeter reading. 5. A calibration curve is established. Readings at different levels were recorded: using CO-oximeter as a reference, readings of blood oxygen concentration data processing software at different blood oxygen saturation levels were recorded. Establishing a mathematical model: from these data points, a calibration curve or mathematical model is created describing the relationship between the two device readings. 6. Calibration coefficients are applied. And (3) correcting in real time: according to the calibration curve, a calibration coefficient or compensation value is applied to the reading of the blood oxygen concentration data processing software, and the calibration coefficient or compensation value is realized through a software algorithm. 7. And verifying the calibration effect. And (5) measuring again: measurements were made using standard equipment and blood oxygen concentration data processing software to verify that the calibration was valid. Adjustment and repetition: if the calibrated readings still deviate from the readings of the standard device, the calibration coefficients are further adjusted or the settings of other parameters are reconsidered and the comparison and adjustment process is repeated. 8. Record and save settings. Recording optimal parameters: once the optimal parameter settings are found, these settings are recorded and saved for quick adjustment to the optimal state in future use.
The working principle of measuring the blood oxygen saturation of the ocular surface blood vessel by using the ocular surface blood oxygen saturation measuring instrument is as follows:
the operator holds the ocular surface vascular blood oxygen saturation measuring instrument, the position of the hollow elliptic cylindrical detection hole at the bottom of the measuring shell 12 is tightly attached to the ocular skin, after the attachment is determined to be correct, the operator keeps the eyes open, and lightly presses the switch control key 111. The light source emitter 131 emits incident light and reaches the ocular surface blood vessel of the operator, and as hemoglobin (Hb) and oxyhemoglobin (HbO 2) of blood in the ocular surface blood vessel have different light absorption coefficients at different light wavelengths, the reflected light signal modulated by blood flow in the ocular surface blood vessel bed is collected from the light source receiver 132 on the same surface as the incident light through absorption and scattering of Hb and HbO 2, the modulated reflected light signal is amplified and separated by the signal amplifying unit 151, and then enters the filtering unit 152 to be actively filtered, and the signal is transmitted to the a/D conversion circuit 153 to be converted into a digital signal. Finally, under the control of the singlechip, the ocular surface blood oxygen saturation is obtained by sending the ocular surface blood oxygen saturation into a computer through a serial port of the computer and processing the ocular surface blood oxygen saturation by blood oxygen concentration data processing software, and the measured data is displayed on a display screen 112, so that the whole detection process can be completed only by a few seconds.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention. The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The ocular surface vascular blood oxygen saturation tester is characterized by comprising a testing shell (12), wherein the top of the testing shell (12) is connected with a top panel (11), a hollow elliptic cylinder-shaped testing hole is formed in the bottom of the testing shell, and the top panel (11), the testing shell (12) and the hollow elliptic cylinder-shaped testing hole are enclosed to form a light-shielding testing cavity;
the inside light source module (13), signal processing module, signal acquisition module (16) and data processing module (17) that connect gradually that are provided with of survey casing (12), light source module (13) set up at hollow elliptic cylinder shape detection hole top, and display screen (112) are connected to data processing module (17).
2. The ocular surface vascular oximetry according to claim 1, wherein the light source module (13) comprises a light source emitter (131) and a light source receiver (132), the light source emitter (131) and the light source receiver (132) being both disposed towards the ocular surface.
3. The ocular surface vascular oximetry of claim 2, wherein the light source emitter (131) and the light source receiver (132) each employ a MAX30102 blood oxygen concentration sensor.
4. The ocular surface vascular oximetry of claim 1, wherein the signal processing module is disposed on the circuit board.
5. The ocular surface vascular oximetry of claim 4, wherein the signal processing module includes a signal amplifying unit (151), a filtering unit (152) and an a/D conversion circuit (153) connected in sequence, the signal amplifying unit (151) is connected to the light source module (13), and the a/D conversion circuit (153) is connected to the signal acquisition module (16).
6. The ocular surface vascular oximetry according to claim 1, wherein the signal acquisition module (16) comprises a single chip microcomputer.
7. An ocular surface vascular oximetry according to claim 1, wherein the data processing module (17) comprises a computer in which the blood oxygen concentration data processing software is installed, the computer being connected to the display screen (112).
8. The ocular surface vascular oximetry according to claim 1, wherein the top panel (11) and the measurement housing (12) are both made of black ABS plastic.
9. The ocular surface vascular blood oxygen saturation meter of any one of claims 1-8, wherein screw holes are provided in the side of the measuring housing (12); the measuring shell (12) is connected with a handle fixing plate (142) through a screw hole, and the handle fixing plate (142) is connected with a handheld handle (141).
10. The method for detecting the ocular surface vascular oximetry according to any one of claims 1 to 9, wherein the position of the hollow elliptic cylindrical detection hole at the bottom of the detection shell (12) is tightly attached to the skin of the eyes, the eyes are opened, the ocular surface vascular oximetry is started, the light source module (13) emits incident light to reach the ocular surface vascular of an operator, the reflected light signal modulated by blood flow in the ocular surface vascular bed is collected and converted into an electric signal, then amplified, filtered and converted into a digital signal by the signal processing module, the signal is collected by the signal collecting module (16), and after the signal is processed by the data processing module (17), the measured data is displayed on the display screen (112).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410604031.1A CN118476806A (en) | 2024-05-15 | 2024-05-15 | Ocular vascular blood oxygen saturation tester and detection method thereof |
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| CN202410604031.1A CN118476806A (en) | 2024-05-15 | 2024-05-15 | Ocular vascular blood oxygen saturation tester and detection method thereof |
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| CN118476806A true CN118476806A (en) | 2024-08-13 |
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| CN202410604031.1A Pending CN118476806A (en) | 2024-05-15 | 2024-05-15 | Ocular vascular blood oxygen saturation tester and detection method thereof |
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- 2024-05-15 CN CN202410604031.1A patent/CN118476806A/en active Pending
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