Blood oxygen intracranial pressure detection method based on LD laser as light source

Abstract

The invention belongs to the technical field of blood oxygen intracranial pressure detection, and provides a blood oxygen intracranial pressure detection method based on LD laser as a light source, which comprises the following steps: arranging an LD laser light source on one side of the front surface of each detection patch, and arranging at least one detector on the other side; patch side composite connectors are arranged on the back surfaces of various detection patches; one end of the photoelectric composite cable is connected with the patch side connector, the other end of the photoelectric composite cable is connected with the test host through the host side connector, and the test host is further connected with the display host; according to the types of brain blood oxygen and intracranial pressure needing to be detected, corresponding patches are selected and attached to the brain of a detector, light emitted by an LD laser light source enters the brain, then an arc-shaped light path is formed in the brain, and the light is detected by a detector at the end of the light path; by using the LD laser light source, the uniqueness of an incidence point entering a human body can be ensured while multi-wavelength coupling output can be realized, the consistency of a light path can be ensured, and accurate data can be obtained.

Description

Technical Field

[0001] The invention belongs to the technical field of blood oxygen intracranial pressure detection, in particular to a blood oxygen intracranial pressure detection method based on LD laser as a light source. Background Art

[0002] As the central nervous organ of the human body, the human brain controls and directs all physiological activities of the human body. The blood flow and oxygen consumption of human brain tissue are very large. When a certain area of ​​brain tissue is active, its local blood volume will increase. The increase reflects the degree of activation. The change in blood volume in brain tissue can be used as an indicator of brain function activity.

[0003] However, the existing light sources for measuring blood oxygen are generally red light and infrared light, which cannot guarantee the uniqueness of the point of incidence of the light source entering the human body, causing deviations in the measurement process and results, resulting in the measurement results being far from the ideal state of the principle (Lambert-Beer law), which is not conducive to obtaining accurate data.

[0004] To this end, those skilled in the art have proposed a blood oxygen intracranial pressure detection method based on LD laser as a light source to solve the problems raised by the background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a blood oxygen intracranial pressure detection method based on LD laser as a light source, so as to solve the problem that the uniqueness of the incident point of the light source entering the human body cannot be guaranteed, resulting in deviations in the measurement process and results, causing the measurement results to be far from the ideal state of the principle (Lambert-Beer law), which is not conducive to obtaining accurate data.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A blood oxygen intracranial pressure detection method based on LD laser as a light source, the method comprising:

[0008] Step 1: An LD laser light source is arranged on one side of the front of each detection patch, and at least one detector is arranged on the other side;

[0009] Step 2: Set a patch side composite connector on the back of each detection patch, and the patch side connector includes a magnetic adsorption connector contact and an optical fiber FA end;

[0010] Step 3: Connect one end of the optoelectronic composite cable to the patch side connector, and the other end to the test host through the host side connector, and the test host is also connected to the display host;

[0011] Step 4: According to the type of brain blood oxygen and intracranial pressure that needs to be tested, select the corresponding patch and stick it on the brain of the tester. The light emitted by the LD laser light source enters the brain, and then forms an arc light path in the brain, and is detected by the detector at the end of the light path;

[0012] Step 5: According to the Lambert-Beer law, the changes in hemoglobin, blood oxygen and other parameters in the brain tissue are obtained.

[0013] Preferably, the various types of detection patches in step one include blood oxygen patches, intracranial pressure patches and composite patches.

[0014] Preferably, a detector is provided on the front of the blood oxygen patch, two detectors are provided on the front of the intracranial pressure patch, and two or more detectors and light sources are provided on the front of the composite patch.

[0015] Preferably, in step three, there are two connection methods between the host side connector and the optoelectronic composite cable: one is to connect both the optical signal and the electrical signal to the test host through the optoelectronic composite cable and the optoelectronic composite connector, and both the optical signal and the electrical signal are transmitted through the optoelectronic composite connector; the other is that both the optical signal and the electrical signal are transmitted through the optoelectronic composite cable on the detection patch side, separated on the test host side, and connected to the test host through the electrical signal cable and the optical fiber, and the electrical signal connector and the optical signal connector.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can achieve monochromatic or extremely narrow spectrum output by using LD laser light source. LD laser has the characteristics of concentrated beam dispersion, focusing and high light density. For monitoring, LD light source laser can achieve multi-wavelength coupling output while ensuring the uniqueness of the incident point into the human body, which is beneficial to ensuring the consistency of the optical path, making the measurement process and results closer to the ideal state of the principle (Lambert-Beer law), and more conducive to obtaining accurate data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The working principle diagram of the blood oxygen intracranial pressure detection method based on LD laser as the light source of the present invention;

[0020] Figure 2 It is a schematic diagram of changes in various parameters of brain tissue derived according to the Lambert-Beer law in the present invention;

[0021] Figure 3 It is a schematic diagram of the overall connection method of the optoelectronic composite cable in the present invention;

[0022] Figure 4 This is the first connection method between the optoelectronic composite cable and the host side connector in the present invention;

[0023] Figure 5 This is the second connection method between the optoelectronic composite cable and the host side connector in the present invention;

[0024] Figure 6 A schematic diagram of the relationship between the optical fiber end and the detection patch of the present invention;

[0025] Figure 7 This is a schematic diagram of Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] As attached Figure 1 To Attachment Figure 7 As shown:

[0028] Embodiment 1:

[0029] The invention provides a blood oxygen intracranial pressure detection method based on LD laser as a light source, the method comprising:

[0030] Step 1: An LD laser light source is arranged on one side of the front of each detection patch, and at least one detector is arranged on the other side;

[0031] Step 2: Set a patch side composite connector on the back of each detection patch, and the patch side connector includes a magnetic adsorption connector contact and an optical fiber FA end;

[0032] Step 3: Connect one end of the optoelectronic composite cable to the patch side connector, and the other end to the test host through the host side connector, and the test host is also connected to the display host;

[0033] Step 4: According to the type of brain blood oxygen and intracranial pressure that needs to be tested, select the corresponding patch and stick it on the brain of the tester. The light emitted by the LD laser light source enters the brain and then forms an arc light path in the brain, such as Figure 1 As shown, it is detected by the detector at the end of the light path;

[0034] Step 5: According to the Lambert-Beer law, the changes in hemoglobin, blood oxygen and other parameters in the brain tissue are obtained, such as Figure 2 As shown (the English and Chinese in the figure are medical terms).

[0035] As can be seen from the above, when the front of the detection patch is pasted on the human brain, the light emitted by the LD laser passes through the scalp and skull to reach the brain tissue. After a series of absorption and scattering by the brain tissue, it is detected by the detector at the end of the light path. The path of the photon from the light source to the detector passing through the brain tissue forms an arc light path (similar to the shape of a banana), as shown in Figure 1. Figure 1 As shown, the optical signal and the electrical signal are then transmitted to the test host through the optoelectronic composite cable and the host side connector, and the data of each parameter is displayed through the display host.

[0036] Embodiment 2:

[0037] Specifically, the various types of detection patches in step one include blood oxygen patches, intracranial pressure patches and composite patches.

[0038] Specifically, a detector is arranged on the front of the blood oxygen patch, two detectors are arranged on the front of the intracranial pressure patch, and two or more detectors and light sources are arranged on the front of the composite patch.

[0039] Specifically, Figure 4-Figure 5 As shown, in step three, there are two connection methods between the host side connector and the optoelectronic composite cable: one is to connect both the optical signal and the electrical signal to the test host through the optoelectronic composite cable and the optoelectronic composite connector, and both the optical signal and the electrical signal are transmitted through the optoelectronic composite connector; the other is that both the optical signal and the electrical signal are transmitted through the optoelectronic composite cable on the detection patch side, separated on the test host side, and connected to the test host through the electrical signal cable and optical fiber, and the electrical signal connector and the optical signal connector.

[0040] From the above, we can see that the LD laser light source is inside the test host, such as Figure 3 As shown, the optoelectronic composite cable and the detection patch are connected by magnetic attraction, the electrical signal is connected by magnetic adsorption connector, and the signal is transmitted through the contact; according to the principle (Lambert-Beer law), the light needs to enter the skin vertically, so the FA head is used at the end of the optical fiber to achieve a 90° angle of bending the optical fiber and enter the skin perpendicular to the detection patch, as shown in FIG. Figure 6 shown.

[0041] Embodiment three:

[0042] The hardware design of LD laser power control in the test host includes:

[0043] When using LD laser light source, the light source power needs to be strictly monitored and controlled to ensure the safety of laser use;

[0044] By utilizing the good linear relationship between LD laser power and current, the output power of the light source can be controlled by monitoring and controlling the light source current.

[0045] Take the domestic Huaguang 808nm light source as an example. Figure 7 Shown is the relationship between current and power.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

[0047] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A blood oxygen intracranial pressure detection method based on LD laser as a light source, characterized in that: The method comprises: Step 1: An LD laser light source is arranged on one side of the front of each detection patch, and at least one detector is arranged on the other side; Step 2: Set a patch side composite connector on the back of each detection patch, and the patch side connector includes a magnetic adsorption connector contact and an optical fiber FA end; Step 3: Connect one end of the optoelectronic composite cable to the patch side connector, and the other end to the test host through the host side connector, and the test host is also connected to the display host; Step 4: According to the type of brain blood oxygen and intracranial pressure that needs to be tested, select the corresponding patch and stick it on the brain of the tester. The light emitted by the LD laser light source enters the brain, and then forms an arc light path in the brain, and is detected by the detector at the end of the light path; Step 5: According to the Lambert-Beer law, the changes in hemoglobin, blood oxygen and other parameters in the brain tissue are obtained.

2. The method for detecting intracranial pressure by using LD laser as a light source according to claim 1, characterized in that: The various types of detection patches in step 1 include blood oxygen patches, intracranial pressure patches and composite patches.

3. The method for detecting intracranial pressure by using LD laser as a light source according to claim 2, characterized in that: The front of the blood oxygen patch is provided with a detector, the front of the intracranial pressure patch is provided with two detectors, and the front of the composite patch is provided with two or more detectors and light sources.

4. The method for detecting intracranial pressure by using LD laser as a light source according to claim 1, characterized in that: In the step three, there are two connection methods between the host side connector and the optoelectronic composite cable: one is to connect both the optical signal and the electrical signal to the test host through the optoelectronic composite cable and the optoelectronic composite connector, and both the optical signal and the electrical signal are transmitted through the optoelectronic composite connector; the other is that both the optical signal and the electrical signal are transmitted through the optoelectronic composite cable on the detection patch side, separated on the test host side, and connected to the test host through the electrical signal cable and optical fiber, and the electrical signal connector and the optical signal connector.

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