Percutaneous jaundice instrument

By designing a probe that includes a long and short optical wave receiving end and a light emitting end, analyzing the optical density difference of reflected light in the shallow area of ​​skin tissue and removing noise, the problem of affecting the accuracy of serum bilirubin in the prior art is solved, and higher measurement accuracy is achieved.

CN119655751AInactive Publication Date: 2025-03-21NINGBO DAVID MEDICAL DEVICE CO LTD
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Patent Information

Application Number
CN202510038047.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2025-03-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the existing percutaneous jaundice instrument detects serum bilirubin concentration, the accuracy of the determination is affected due to the existence of "impurities" such as hemoglobin and melanin in the skin tissue.

Method used

A percutaneous jaundice instrument is designed, using a probe that includes a long-light wave receiving end, a short-light wave receiving end and a light emitting end. The photoelectric module emits light to the skin tissue through the light emitting end. The long- and short-light waves receive reflected light in the depth and shallow areas of the subcutaneous tissue respectively. The control system analyzes the optical density difference of the reflected light, and removes the common noise of the long-light wave and the short-light wave, and only retains non-common optical density differences to obtain the optical density concentration value of serum bilirubin.

Benefits of technology

By removing noise caused by "impurities" in skin tissue, the accuracy of serum bilirubin concentration measurement is improved and the reliability of the measurement results is ensured.

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Abstract

The invention provides a percutaneous jaundice instrument, and relates to the technical field of medical instruments. The percutaneous jaundice instrument comprises a probe, a control system and a photoelectric module in communication connection with the control system, the probe comprises a long light wave receiving end, a short light wave receiving end and a light emitting end, and the light emitting end is located between the long light wave receiving end and the short light wave receiving end. The photoelectric module is used for emitting natural light to skin tissue through the light emitting end, the long light wave receiving end is used for receiving long light waves reflected by a deep area of subcutaneous tissue, and the short light wave receiving end is used for receiving short light waves reflected by a shallow area of the subcutaneous tissue. And the control system is used for analyzing non-common optical density differences of the reflected long light waves and the reflected short light waves so as to output corresponding bilirubin concentration values according to the optical density differences.
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Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a transcutaneous jaundice instrument. Background Art

[0002] At present, transcutaneous jaundice meters detect the concentration of serum bilirubin accumulated in skin tissue by the degree to which serum bilirubin absorbs light waves. However, the presence of "impurities" such as hemoglobin and melanin in skin tissue that can absorb light waves affects the accuracy of serum bilirubin concentration detection. Summary of the invention

[0003] The problem solved by the invention is: how to improve the measurement accuracy of the transcutaneous jaundice instrument.

[0004] In order to solve the above problems, the present invention provides a transcutaneous jaundice meter, comprising a probe, a control system and a photoelectric module communicatively connected to the control system, the probe comprising a long light wave receiving end, a short light wave receiving end and a light emitting end, the light emitting end being located between the long light wave receiving end and the short light wave receiving end, the photoelectric module being used to emit light to skin tissue through the light emitting end, the long light wave receiving end being used to receive the long light wave reflected by the deep area of ​​subcutaneous tissue and transmit it to the photoelectric module, the short light wave receiving end being used to receive the short light wave reflected by the shallow area of ​​subcutaneous tissue and transmit it to the photoelectric module, and the control system being used to analyze the optical density difference between the reflected long light wave and the short light wave, so as to output the corresponding bilirubin concentration value according to the optical density difference.

[0005] Optionally, the transcutaneous jaundice instrument also includes a handheld shell and a base, the control system is installed in the handheld shell, one end of the probe is installed in the handheld shell, and the other end extends away from the handheld shell, a positioning groove is provided on the base, and the handheld shell and the probe are plugged into the positioning groove.

[0006] Optionally, a charging socket electrically connected to the control system is provided on the handheld housing, and a charging terminal is provided in the positioning groove, and the charging terminal is used to be inserted into the charging socket to supply power to the control system.

[0007] Optionally, the transcutaneous jaundice instrument further includes a calibration screen, which is mounted on the base, and the end face of the light-emitting end of the probe is used to be parallel to and in contact with the calibration screen to achieve calibration of the initial value of the control system.

[0008] Optionally, a groove is further provided on the base, and the calibration screen is installed in the groove.

[0009] Optionally, a spring is further provided on the base, and the spring is connected between the calibration screen and the groove.

[0010] Optionally, a flip cover for covering the calibration screen is provided at the notch of the groove.

[0011] Optionally, the handheld housing includes a back portion for mounting a battery, the back portion is provided with an annular protrusion structure, and the annular protrusion structure is used for handheld grasping.

[0012] Optionally, the control system further comprises an information identification module for identifying infant information.

[0013] Optionally, the control system includes a wireless transmission module.

[0014] Compared with the related art, in the transcutaneous jaundice instrument of the present invention, when measuring serum bilirubin, the natural light emitted by the photoelectric module enters the subcutaneous tissue through the light emitting end, the long light wave in the natural light can reach the deep area of ​​the subcutaneous tissue and is reflected by the deep area of ​​the subcutaneous tissue and is received by the long light wave receiving end, and the short light wave in the natural light can reach the shallow area of ​​the subcutaneous tissue and is reflected by the shallow area of ​​the subcutaneous tissue and is received by the short light wave receiving end. The control system can respectively analyze the optical density difference corresponding to the long light wave and the optical density difference corresponding to the short light wave, and utilize the difference in the propagation depth of the long light wave and the short light wave in the skin tissue. When analyzing the optical density difference, the control system can remove the partial optical density influence shared by the long light wave and the short light wave, that is, remove the noise caused by "impurities" such as hemoglobin and melanin, and only retain the non-shared optical density difference between the long light wave and the short light wave. According to the non-shared optical density difference, the optical density concentration value corresponding to the serum bilirubin in the subcutaneous tissue can be obtained, thereby ensuring the accuracy of the serum bilirubin concentration measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the probe of the transcutaneous jaundice instrument in the embodiment of the present invention;

[0016] Figure 2 Schematic diagram of the serum bilirubin determination principle in an embodiment of the present invention;

[0017] Figure 3 Schematic diagram of the structure of the transcutaneous jaundice instrument in an embodiment of the present invention;

[0018] Figure 4 is a schematic structural diagram of the back side of the handheld housing in an embodiment of the present invention;

[0019] Figure 5 It is a schematic structural diagram of a base in an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1-probe; 11-long-wavelength glass fiber; 12-short-wavelength glass fiber; 13-light-emitting glass fiber; 2-handheld housing; 21-charging socket; 22-annular raised structure; 3-base; 31-positioning groove; 311-charging terminal; 32-flip cover; 4-calibration screen. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the accompanying drawings, the X-axis represents the horizontal position, and the positive direction of the X-axis (that is, the direction in which the arrow of the X-axis points) represents the right side, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the left side; in the accompanying drawings, the Y-axis represents the front-back position, and the positive direction of the Y-axis (that is, the direction in which the arrow of the X-axis points) represents the front side, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the rear side; in the accompanying drawings, the Z-axis represents the vertical position, and the positive direction of the Z-axis (that is, the direction in which the arrow of the Z-axis points) represents the upper side, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the lower side. It should also be noted that the aforementioned X-axis, Y-axis, and Z-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0025] Different concentrations of bilirubin have different degrees of absorption of light, so the concentration of bilirubin can be obtained by analyzing and converting the absorption of light by bilirubin. Clinical trials have shown that the measured value of the jaundice meter of subcutaneous tissue (also called the transcutaneous value) has a good linear correlation with the serum bilirubin concentration of the newborn, that is, a certain transcutaneous value corresponds to a certain serum bilirubin concentration. Therefore, the size and change of the serum bilirubin concentration can be determined according to the size and change of the transcutaneous value, and in particular, the change of the serum bilirubin concentration can be accurately reflected, thereby effectively detecting neonatal jaundice. At present, due to the presence of "impurities" such as hemoglobin and melanin in the skin tissue that also have light-absorbing properties, the noise of the "impurities" will make the accuracy of the measurement result of the bilirubin concentration poor. Based on this, an embodiment of the present invention provides a transcutaneous jaundice meter to achieve the removal of "impurity" noise to improve the accuracy of the bilirubin concentration measurement result.

[0026] Combination Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a transcutaneous jaundice instrument, including a probe 1, a control system and a photoelectric module communicatively connected to the control system, the probe 1 includes a long light wave receiving end 11, a short light wave receiving end 12 and a light emitting end 13, the light emitting end 13 is located between the long light wave receiving end 11 and the short light wave receiving end 12, the photoelectric module is used to emit light to the skin tissue through the light emitting end 13, the long light wave receiving end 11 is used to receive the long light wave reflected by the deep area of ​​the subcutaneous tissue and transmit it to the photoelectric module, the short light wave receiving end 12 is used to receive the short light wave reflected by the shallow area of ​​the subcutaneous tissue and transmit it to the photoelectric module, and the control system is used to analyze the optical density difference between the reflected long light wave and the short light wave, so as to output the corresponding bilirubin concentration value according to the optical density difference.

[0027] Specifically, the specific circuit composition structure of the control system and the optoelectronic module is not required in detail and can be realized by existing technical means. For example, the optoelectronic module can include a light emitting circuit and a long light wave receiving circuit (including a photodiode of a corresponding waveband) and a short light wave receiving circuit (including a photodiode of a corresponding waveband). The light emitting circuit is used to emit natural light, and the long light wave receiving circuit and the short light wave receiving circuit can convert the corresponding received light signal into an electrical signal and transmit it to the control system. The shape of the probe 1 can be a cylindrical structure, and the long light wave receiving end 11, the short light wave receiving end 12 and the light emitting end 13 are distributed along the radial direction of the cylindrical structure, and the light emitting end 13 is located between the long light wave receiving end 11 and the short light wave receiving end 12, that is, on any radial cross section of the probe 1, the long light wave receiving end 11 is annular and wraps the light emitting end 13, and the light emitting end 13 is annular and wraps the short light wave receiving end 12, so as to avoid the long light wave receiving end 11 and the short light wave receiving end 12 from being adjacent to each other and causing interference. The optical path of long light waves is longer than that of short light waves. Therefore, when long light waves propagate in the skin tissue, they can reach deeper positions in the skin tissue, while short light waves with shorter optical paths propagate in the skin tissue and reach shallower positions in the skin tissue. That is, the depth of long light waves propagating in the skin tissue is greater than the depth of short light waves propagating in the skin tissue. When detecting serum bilirubin, the control system drives the photoelectric module to operate, and the photoelectric module emits natural light to the skin through the light emitting end 13 on the probe 1. Natural light includes long light waves and short light waves. During the propagation of natural light in the skin tissue, the long light waves reach the deep area of ​​the subcutaneous tissue and are reflected by the deep area of ​​the subcutaneous tissue to the long light wave receiving end 11 to be received by the long light wave receiving end 11, and the short light waves reach the shallow area of ​​the subcutaneous tissue and are reflected by the shallow area of ​​the subcutaneous tissue to the short light wave receiving end 12 to be received by the short light wave receiving end 12. The control system is used to analyze the optical density of the reflected long light waves. The control system then compares the difference in optical density between the reflected long and short light waves. Since both long and short light waves pass through "impurities" such as melanin and hemoglobin, when analyzing the optical density difference (spectral analysis), the common noise of long and short light waves, that is, the effect of "impurities" such as melanin and hemoglobin on optical density, can be removed, leaving only the optical density difference caused by serum bilirubin. The greater the optical density difference, the greater the serum bilirubin concentration value output by the control system, and vice versa. The smaller the serum bilirubin concentration value output by the control system. For example, Figure 2 As shown, Figure 2 Here, a represents the optical density change caused by serum bilirubin, and b represents the optical density change caused by "impurities" such as hemoglobin and melanin. In the reflected light, the optical density change corresponding to the long light wave is a+b, and the optical density change corresponding to the short light wave is b. The difference between the two can remove the optical density change b shared by the long and short light waves. The remaining optical density difference a is the actual optical density difference corresponding to the serum bilirubin in the subcutaneous tissue.

[0028] Specifically, the short light wave can select the blue light wave (461nm), and the long light wave can select the green light wave (550nm). In this embodiment, the absorption difference between the blue light wave (461nm) and the green light wave (550nm) in the skin tissue can be used to detect the bilirubin concentration deposited in the skin tissue of newborn babies.

[0029] Therefore, in this embodiment, when measuring serum bilirubin, the natural light emitted by the photoelectric module enters the subcutaneous tissue through the light emitting end 13, and the long light wave in the natural light can reach the deep area of ​​the subcutaneous tissue and be reflected by the deep area of ​​the subcutaneous tissue and received by the long light wave receiving end 11, and the short light wave in the natural light can reach the shallow area of ​​the subcutaneous tissue and be reflected by the shallow area of ​​the subcutaneous tissue and received by the short light wave receiving end 12. The control system can respectively analyze the optical density difference corresponding to the long light wave and the optical density difference corresponding to the short light wave, and use the difference in the propagation depth of the long light wave and the short light wave in the skin tissue. When analyzing the optical density difference, the control system can remove the partial optical density influence shared by the long light wave and the short light wave, that is, remove the noise caused by "impurities" such as hemoglobin and melanin, and only retain the non-shared optical density difference between the long light wave and the short light wave. According to the non-shared optical density difference, the optical density concentration value corresponding to the serum bilirubin in the subcutaneous tissue can be obtained, thereby ensuring the accuracy of the serum bilirubin concentration measurement.

[0030] Optionally, combined Figures 3 to 5 As shown, the transcutaneous jaundice instrument also includes a handheld shell 2 and a base 3, the control system is installed in the handheld shell 2, one end of the probe 1 is installed in the handheld shell 2, and the other end extends away from the handheld shell 2, a positioning groove 31 is provided on the base 3, and the handheld shell 2 and the probe 1 are plugged into the positioning groove 31.

[0031] Specifically, the control system, the optical transmission circuit for communicating with the control system, the long light wave receiving circuit and the short light wave receiving circuit are installed in the handheld housing 2, one end of the probe 1 is installed in the handheld housing 2, and the other end extends away from the handheld housing 2. A positioning groove 31 is provided on the base 3, and the handheld housing 2 and the probe 1 are plugged into the positioning groove 31. When no measurement is needed, the handheld housing 2 is inserted downward into the positioning groove 31, and the positioning groove 31 realizes the hiding of the probe 1 to realize the protection of the probe 1, and under the support of the positioning groove 31, the handheld housing 2 can maintain a vertical state, so as to ensure that when the next measurement is performed, the handheld housing 2 only needs to be pulled out of the positioning groove 31, which can not only realize the protection of the probe 1 when not in use, but also ensure the storage safety of the handheld housing 2.

[0032] In this way, one end of the probe 1 is installed on the handheld shell 2, and the other end extends away from the handheld shell 2. The probe 1 is inserted into the positioning groove 31. The positioning groove 31 protects the probe 1 when not in use. Then, it is installed in the handheld shell 2 through the control system. The handheld shell 2 is inserted into the positioning groove 31, which can ensure the storage safety of the handheld shell 2 for the next measurement.

[0033] Optionally, combined Figures 4 to 5 As shown, the handheld housing 2 is provided with a charging socket 21 electrically connected to the control system, and the positioning groove 31 is provided with a charging terminal 311, which is used to be inserted into the charging socket 21 to supply power to the control system.

[0034] Specifically, when the handheld housing 2 is inserted into the positioning groove 31 on the base 3, the charging terminal 311 is inserted into the charging socket 21 to realize the power supply of the control system. When power supply is not required, the charging terminal 311 is inserted into the charging socket 21 to ensure the stability of the handheld housing 2 in the positioning groove 31.

[0035] In this way, a charging socket 21 electrically connected to the control system is provided on the handheld shell 2, and a charging terminal 311 is provided in the positioning groove 31. The charging terminal 311 is used to be inserted into the charging socket 21 to power the control system. During the process of inserting the handheld shell 2 into the positioning groove 31, not only the control system is powered, but also the handheld shell 2 can be positioned by plugging the charging terminal 311 into the charging socket 21, so as to further improve the stability of the handheld shell 2 when stored on the base 3.

[0036] Optionally, combined Figure 5 As shown, the transcutaneous jaundice instrument also includes a calibration screen 4, which is mounted on the base 3, and the end surface of the light-emitting end of the probe 1 is used to be parallel to and fit with the calibration screen 4 to achieve calibration of the initial value of the control system.

[0037] Specifically, the end face of the light-emitting end of the probe 1 can be understood as the end face of the probe 1 facing the negative direction of the Z axis. The calibration screen 4 is mounted on the base 3. After long-term use, the transcutaneous jaundice meter may have errors. For example, the offset of the probe 1 makes it impossible for the end face of the light-emitting end to fully contact the skin, resulting in inaccurate measurement results. Based on this, during calibration, the angle of the probe 1 is adjusted so that the end face of the light-emitting end of the probe 1 is parallel to and fits the calibration screen 4. After fitting, the optical density of the long light wave and the short light wave reflected by the calibration screen 4 is the same, that is, the value output by the control system is zero to achieve calibration. If the calibration device cannot be adjusted, the probe 1 can be replaced to ensure measurement accuracy.

[0038] In this way, by installing the calibration screen 4 on the base 3, the light-emitting end of the probe 1 is used to be parallel and in contact with the calibration screen 4 to achieve calibration of the initial value of the control system, thereby ensuring the accuracy of the measurement results of the transcutaneous jaundice meter.

[0039] Optionally, the base 3 is further provided with a groove, and the calibration screen 4 is installed in the groove.

[0040] Specifically, the notch of the groove faces upward, and the calibration screen 4 is installed in the groove.

[0041] In this way, a groove is also provided on the base 3, and the calibration screen 4 is installed in the groove. The groove can realize the calibration screen 4 to be embedded in the base 3, thereby realizing the horizontal limitation of the calibration screen 4 to ensure the stability of the calibration screen 4, thereby ensuring the accuracy of the calibration process.

[0042] Optionally, a spring is further provided on the base 3, and the spring is connected between the calibration screen 4 and the groove.

[0043] Specifically, when the probe 1 is attached to the calibration screen 4 , the probe 1 may not be kept level due to the error of holding the probe 1 , which may cause deviation in the calibration process.

[0044] In this way, a spring is also provided on the base 3, and the spring is connected between the calibration screen 4 and the groove. The setting of the spring allows the calibration screen 4 to be tilted in the vertical direction, so that the probe 1 can be fully fitted with the calibration screen 4 from different directions to ensure the accuracy of the calibration process.

[0045] Based on the above embodiment, a stopper is provided at the notch of the groove to prevent the calibration screen 4 from being ejected into the groove by the spring.

[0046] Optionally, combined Figures 3 to 5 As shown, a flip cover 33 for covering the calibration screen 4 is provided at the notch of the groove 32 .

[0047] Specifically, one end of the flip cover 33 is rotatably mounted on the notch of the groove 32 via a rotating shaft, and the other end of the flip cover 33 is snap-fitted to the other end of the notch of the groove 32 via a lock. When the flip cover 33 is snapped on the notch of the groove 32, the calibration screen 4 can be covered to avoid damage to the calibration screen 4.

[0048] In this way, a flip cover 33 for covering the calibration screen 4 is provided at the notch of the groove 32 , and the flip cover 33 can protect the calibration screen 4 to extend the service life of the calibration screen 4 .

[0049] Optionally, combined Figure 3 to Figure 4 As shown, the handheld housing 2 includes a back portion for mounting a battery, and an annular protruding structure 22 is provided on the back portion. The annular protruding structure 22 is used for hand-held grasping.

[0050] Specifically, a battery installation slot and a battery cover covering the battery installation slot are provided on the back of the handheld housing 2. After the battery is installed in the battery installation slot, the battery cover covers the battery. An annular protrusion structure 22 is provided on the back of the handheld housing 2. When holding the handheld housing 2, the annular protrusion structure 22 can increase the friction effect between the back of the handheld housing 2 and the fingers, so as to improve the hand-held stability of the handheld housing 2.

[0051] In this way, the handheld housing 2 includes a back portion for installing a battery, and the back portion is provided with an annular protrusion structure 22, which is used for hand-held gripping. The annular protrusion structure 22 can increase the friction effect between the back portion of the handheld housing 2 and the fingers, so as to improve the hand-held stability of the handheld housing 2. In addition, the annular protrusion structure 22 ensures that the handheld housing 2 remains stable when the back portion is placed on a desktop, and can be placed on the desktop stably without being easily rotated or reversed, thereby ensuring stability.

[0052] Based on the above embodiment, a protrusion structure may also be provided on the battery cover, and can work together with the annular protrusion structure 22 to improve the hand-held stability of the hand-held housing 2 .

[0053] In some embodiments, a sliding groove adapted to the annular protrusion structure 22 is provided on the inner wall of the positioning groove 31 to guide the insertion direction of the handheld shell 2 during the insertion of the handheld shell 2 into the positioning groove 31, so as to ensure the accuracy of the insertion of the handheld shell 2 into the positioning groove 31 and avoid the handheld shell 2 from getting stuck during insertion.

[0054] Optionally, the control system further comprises an information identification module for identifying infant information.

[0055] Specifically, each baby is equipped with an independent information card, and the identification end of the information identification module can be set on the battery cover, that is, the battery cover is provided with a code scanning hole for identifying information. After aligning the magnetic stripe of the information card with the code scanning hole, the information identification module automatically identifies the baby's information, ensuring that the subsequent measurement results can accurately correspond to the corresponding baby, ensuring the accuracy of the measurement results.

[0056] In this way, the infant information is identified through the information identification module, so that each measurement result can accurately correspond to the corresponding infant, avoiding multiple infants sharing one measurement result, and also avoiding the situation where multiple measurement results correspond to one infant, thereby ensuring the accuracy of the measurement results.

[0057] Optionally, the control system includes a wireless transmission module.

[0058] Specifically, the wireless transmission module, namely the WiFi module, is used for terminal output of historical data (number, nurse ID, patient ID, measurement time, measurement value) to facilitate recording of the measurement process.

[0059] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A transcutaneous jaundice instrument, characterized in that: The invention comprises a probe (1), a control system and a photoelectric module connected to the control system for communication. The probe (1) comprises a long light wave receiving end (11), a short light wave receiving end (12) and a light emitting end (13). The light emitting end (13) is located between the long light wave receiving end (11) and the short light wave receiving end (12). The photoelectric module is used to emit light to skin tissue through the light emitting end (13). The long light wave receiving end (11) is used to receive the long light wave reflected from the deep area of ​​the subcutaneous tissue and transmit it to the photoelectric module. The short light wave receiving end (12) is used to receive the short light wave reflected from the shallow area of ​​the subcutaneous tissue and transmit it to the photoelectric module. The control system is used to analyze the optical density difference between the reflected long light wave and the short light wave, so as to output the corresponding bilirubin concentration value according to the optical density difference.

2. The transcutaneous jaundice instrument according to claim 1, characterized in that: The invention also comprises a handheld housing (2) and a base (3), wherein the control system is installed in the handheld housing (2), one end of the probe (1) is installed in the handheld housing (2), and the other end extends away from the handheld housing (2), and a positioning groove (31) is provided on the base (3), and the handheld housing (2) and the probe (1) are plugged into the positioning groove (31).

3. The transcutaneous jaundice instrument according to claim 2, characterized in that: The handheld housing (2) is provided with a charging socket (21) electrically connected to the control system, and the positioning groove (31) is provided with a charging terminal (311), and the charging terminal (311) is used to be inserted into the charging socket (21) to supply power to the control system.

4. The transcutaneous jaundice instrument according to claim 2, characterized in that: It also comprises a calibration screen (4), which is mounted on the base (3), and the end surface of the light-emitting end of the probe (1) is used to be parallel to and in contact with the calibration screen (4) to achieve calibration of the initial value of the control system.

5. The transcutaneous jaundice instrument according to claim 4, characterized in that: The base (3) is also provided with a groove, and the calibration screen (4) is installed in the groove.

6. The transcutaneous jaundice instrument according to claim 5, characterized in that: The base (3) is also provided with a spring, and the spring is connected between the calibration screen (4) and the groove.

7. The transcutaneous jaundice instrument according to claim 5, characterized in that: A flip cover (32) for covering the calibration screen (4) is arranged at the notch of the groove.

8. The transcutaneous jaundice instrument according to claim 2, characterized in that: The handheld housing (2) comprises a back portion for mounting a battery, the back portion being provided with an annular protruding structure (22), and the annular protruding structure (22) being used for hand-held grasping.

9. The transcutaneous jaundice instrument according to claim 1, characterized in that: The control system further comprises an information identification module for identifying infant information.

10. The transcutaneous jaundice instrument according to claim 1, characterized in that: The control system includes a wireless transmission module.

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