Tympanic membrane vibration tester based on laser Doppler effect

Abstract

The utility model discloses a tympanic membrane vibration tester based on a laser Doppler effect, which comprises a tester body erected on the ground. The test module is used for carrying out vibration test on the tympanic membrane, the head-mounted module is used for wearing the test module on ears of a patient, the positioning module is used for positioning the head-mounted module, the test module is arranged on the lower portion of the head-mounted module, the head-mounted module is arranged on one side of the tester body, and the positioning module is assembled on the side portion of the head-mounted module. The tympanic membrane therapeutic instrument has the advantages that the test module is arranged, the frequency change of the tympanic membrane can be accurately measured through the laser Doppler effect vibration meter so as to accurately detect the specific position and condition of a tympanic membrane wound, an accurate therapeutic scheme can be formulated according to the wound condition, the accuracy rate is high, the head-mounted module is arranged to be matched with the positioning module, and the tympanic membrane therapeutic instrument is convenient to use. The test module can be stably assembled on the ear of a patient to ensure the accuracy and stability of detection, and is suitable for patients of different age groups.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an eardrum vibration tester based on laser Doppler effect. Background Art

[0002] In the prior art, Eustachian tube dysfunction is related to the occurrence, development and recovery of many middle ear diseases, which are common in upper respiratory tract infection, nasopharyngeal inflammation, swelling of protuberance and pharyngeal opening, sinusitis purulent mucus, secretion blocking the pharyngeal opening, children's repeated secretory otitis media, etc., resulting in poor Eustachian tube function, poor tympanic membrane movement, invagination, and many discomforts such as ear stuffiness, tinnitus, pain and hearing loss. At present, the Valsalva method or the Politzer method is usually used for patients with poor Eustachian tube function. Passive inflation can be used to press the airflow into the Eustachian tube through an instrument. It is not only used for diagnosis but also for treatment of poor Eustachian tube function, so that the Eustachian tube is unobstructed and the invaginated tympanic membrane is reset to achieve the purpose of treatment. This method is accepted by people, but its biggest shortcomings are: first, the external air pressure cannot be controlled, and it cannot be peeped, and the specific location and situation of the trauma at the tympanic membrane cannot be determined, which has a certain degree of blindness; second, the nasal cavity is an external window with a variety of bacterial secretions. Once it is an inflammatory basis, it will cause retrograde infection and aggravate the condition.

[0003] The Chinese utility model patent with application number: 201720762809.7 discloses a visual pressure-regulating tympanic membrane micro-vibrator. A hand-held part is arranged on the rear outer wall of a trumpet-shaped tube body, the rear opening of the tube body is closed by a transparent body, an LED lighting lamp, a far-infrared lamp, a liquid medicine spray nozzle and a magnifying lens are arranged in the front inner cavity of the tube body, the liquid medicine spray nozzle is connected to a liquid storage bottle in the hand-held part through a catheter, the liquid spray button on the liquid storage bottle extends out of the hand-held part, a ventilation gap is arranged between the magnifying lens and the inner wall of the tube body, an exhaust joint, an air intake pressure regulating joint or an air intake joint is arranged on the tube body, the exhaust joint is connected to a micro-exhaust pump through a catheter, the LED lighting lamp, the far-infrared lamp and the micro-exhaust pump are all connected to a power supply and are controlled to be opened and closed by their respective control switches, an annular groove is arranged on the rear outer wall of the tube body, and a sealing ring is arranged in the annular groove. However, this type of visual pressure-regulating tympanic membrane microvibrator uses vacuum negative pressure to treat patients. It cannot accurately detect the specific location and condition of tympanic membrane trauma, so it cannot formulate an accurate treatment plan based on the trauma condition, and has a certain degree of blindness. Utility Model Content

[0004] The utility model aims to provide a tympanic membrane vibration tester based on laser Doppler effect.

[0005] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A tympanic membrane vibration tester based on laser Doppler effect comprises a tester body, which is set on the ground, and also comprises a test module for performing vibration test on the tympanic membrane, a head-mounted module for wearing the test module on the ear of a patient, and a positioning module for positioning the head-mounted module, wherein the test module is arranged at the lower part of the head-mounted module, the head-mounted module is configured at one side of the tester body, and the positioning module is assembled at the side of the head-mounted module.

[0007] The test module includes a test shell, a test bracket, a test servo and a laser Doppler effect vibrometer. The interior of the test shell is a hollow structure and a detection opening is provided on one side of the test shell. The test bracket is arranged inside the test shell and fixedly connected to the test shell. The test bracket is arranged corresponding to the detection opening. The test servo is arranged on one side of the test bracket and fixedly connected to the test bracket. The output end of the test servo runs through the test bracket. The laser Doppler effect vibrometer is arranged at the output end of the test servo and fixedly connected to the output end of the test servo. The laser Doppler effect vibrometer is located on the inner side of the test bracket and arranged corresponding to the detection opening.

[0008] It also includes a condenser and a fitted cotton pad. The condenser is arranged at one end of the laser Doppler effect vibrometer close to the detection opening and is fixedly connected to the laser Doppler effect vibrometer. The condenser is a trumpet-shaped cover structure. The fitted cotton pad is arranged on the periphery of one side of the test shell where the detection opening is provided and is fixedly connected to the test shell. The fitted cotton pad is an annular cotton pad structure.

[0009] There are two groups of test modules, which are symmetrically arranged on both sides of the lower part of the head-mounted module corresponding to the patient's ears.

[0010] The head-mounted module includes a head-mounted bracket, an extension bracket and a mounting bracket. The head-mounted bracket is horizontally arranged and the upper end of the head-mounted bracket is provided with a cable connected to the tester body. The extension bracket is provided with two groups, and the two groups of extension brackets are symmetrically arranged at both ends of the head-mounted bracket and plugged with the head-mounted bracket through an adjustment block. The mounting bracket is provided with two groups, and the two groups of mounting brackets are respectively arranged at one end of the two groups of extension brackets away from the head-mounted bracket and fixedly connected with the corresponding extension bracket through screws. Two groups of test modules are respectively arranged at the lower ends of the two groups of mounting brackets.

[0011] It also includes a buffer mechanism, which includes a buffer spring and a buffer block. The buffer spring is arranged at the lower part of the head-mounted bracket and its upper end is fixedly connected to the head-mounted bracket. The buffer block is arranged at the lower end of the buffer spring and fixedly connected to the buffer spring. The buffer block is elastically connected to the head-mounted bracket through the buffer spring.

[0012] The positioning module includes a positioning screw, a positioning block and a positioning protective pad. The positioning screw is provided with two groups. The two groups of positioning screws are respectively arranged at the lower part of the two groups of mounting brackets and penetrate the mounting brackets and are threadedly connected with the corresponding mounting brackets. The two groups of positioning screws are arranged opposite to each other. The positioning blocks are provided with two groups. The two groups of positioning blocks are respectively arranged at the opposite ends of the two groups of positioning screws and are fixedly connected to the corresponding positioning screws. The positioning protective pads are provided with two groups. The two groups of positioning protective pads are respectively arranged on the side of the two groups of positioning blocks away from the positioning screws and are fixedly connected to the corresponding positioning blocks.

[0013] It also includes a placement bracket, which is arranged on one side of the tester body and fixedly connected to the tester body, and the head-mounted module is mounted on the upper end of the placement bracket.

[0014] It also includes a mobile module, which includes a mobile base and mobile universal wheels. The mobile base is provided with two groups, and the two groups of mobile bases are symmetrically arranged on both sides of the bottom of the tester body and fixedly connected to the tester body. The mobile universal wheels are provided with two groups, and each group of the mobile universal wheels consists of two universal wheels arranged side by side at intervals. The two groups of mobile universal wheels are respectively arranged at the bottom of the two groups of mobile bases and fixedly connected to the corresponding mobile bases. The tester body is erected on the ground through the mobile module.

[0015] It also includes an electronic control unit and a display screen. The electronic control unit is arranged on the upper part of the tester body and is fixedly connected to the tester body. The display screen is arranged at the upper end of the tester body and is fixedly connected to the tester body through a bracket. The electronic control unit is electrically connected to the test servo, the laser Doppler effect vibrometer and the display screen.

[0016] The beneficial effects of the utility model are:

[0017] It is equipped with a test module that can accurately measure the frequency changes of the tympanic membrane through a laser Doppler effect vibrometer to accurately detect the specific location and condition of the tympanic membrane trauma, and can formulate an accurate treatment plan based on the trauma condition with high accuracy. It is equipped with a head-mounted module and a positioning module, and the test module can be stably installed on the patient's ear to ensure the accuracy and stability of the detection. It is suitable for patients of different age groups. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the test module of the utility model;

[0020] Figure 3This is a schematic diagram of the cooperation between the head-mounted module and the test module of the utility model;

[0021] Figure 4 This is an electrical connection diagram of the utility model.

[0022] In the figure: 1. Tester body; 2. Test shell; 3. Test bracket; 4. Test servo; 5. Laser Doppler effect vibrometer; 6. Spotlight; 7. Fitting cotton pad; 8. Head-mounted bracket; 9. Extension bracket; 10. Mounting bracket; 11. Buffer spring; 12. Buffer block; 13. Positioning screw; 14. Positioning block; 15. Positioning protective pad; 16. Placement bracket; 17. Mobile base; 18. Mobile universal wheel; 19. Electronic control unit; 20. Display screen. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] A tympanic membrane vibration tester based on laser Doppler effect, comprising a tester body 1, the tester body 1 is set on the ground, and also comprises a test module for performing a vibration test on the tympanic membrane, a head-mounted module for wearing the test module on the patient's ear, and a positioning module for positioning the head-mounted module, wherein the test module is arranged at the lower part of the head-mounted module, the head-mounted module is arranged at one side of the tester body 1, and the positioning module is assembled at the side of the head-mounted module. The overall structural schematic diagram of the utility model is shown as follows Figure 1 shown.

[0025] The test module includes a test shell 2, a test bracket 3, a test servo 4 and a laser Doppler effect vibrometer 5. The interior of the test shell 2 is a hollow structure and a detection opening is provided on one side thereof. The test bracket 3 is arranged inside the test shell 2 and is fixedly connected to the test shell 2. The test bracket 3 is arranged corresponding to the detection opening. The test servo 4 is arranged on one side of the test bracket 3 and is fixedly connected to the test bracket 3. The output end of the test servo 4 passes through the test bracket 3. The laser Doppler effect vibrometer 5 is arranged at the output end of the test servo 4 and is fixedly connected to the output end of the test servo 4. The laser Doppler effect vibrometer 5 is located on the inner side of the test bracket 3 and is arranged corresponding to the detection opening. The test module is configured to perform a vibration test on the patient's tympanic membrane through the cooperation of the test shell 2, the test bracket 3, the test servo 4 and the laser Doppler effect vibrometer 5, so as to accurately locate the tympanic membrane injury. The test shell 2 is used to provide an installation support for the test bracket 3, the test bracket 3 is used to provide an installation support for the test servo 4, the test servo 4 is used to provide an installation support for the laser Doppler effect vibrometer 5 and to fine-tune the angle of the laser Doppler effect vibrometer 5 to meet the detection requirements. The laser Doppler effect vibrometer 5 is used to perform a vibration test on the patient's tympanic membrane, so as to accurately locate the tympanic membrane injury. The cross-sectional view of the test module of the utility model is shown in FIG. Figure 2 shown.

[0026] It also includes a condenser 6 and a fitting cotton pad 7. The condenser 6 is arranged at one end of the laser Doppler effect vibrometer 5 close to the detection opening and is fixedly connected to the laser Doppler effect vibrometer 5. The condenser 6 is a trumpet-shaped cover structure. The fitting cotton pad 7 is arranged on the periphery of one side of the test shell 2 where the detection opening is provided and is fixedly connected to the test shell 2. The fitting cotton pad 7 is an annular cotton pad structure. The test module is provided with two groups, and the two groups of test modules are symmetrically arranged on both sides of the lower part of the head-mounted module corresponding to the patient's ears. Among them, the condenser 6 is used as a condensing structure on the side of the laser Doppler effect vibrometer 5, so as to improve the detection effect of the laser Doppler effect vibrometer 5. The fitting cotton pad 7 is used as a cotton pad structure on the test shell 2, so as to improve the fit and comfort between the test module and the patient's ear.

[0027] The head-mounted module includes a head-mounted bracket 8, an extension bracket 9 and a mounting bracket 10. The head-mounted bracket 8 is horizontally arranged and the upper end of the head-mounted bracket 8 is provided with a cable connected to the tester body 1. The extension bracket 9 is provided with two groups, and the two groups of extension brackets 9 are symmetrically arranged at both ends of the head-mounted bracket 8 and plugged with the head-mounted bracket 8 through an adjustment block. There are two groups of mounting brackets 10, and the two groups of mounting brackets 10 are respectively arranged at one end of the two groups of extension brackets 9 away from the head-mounted bracket 8 and fixedly connected with the corresponding extension bracket 9 through screws. The two groups of test modules are respectively arranged at the lower ends of the two groups of mounting brackets 10. The head-mounted module is connected to the tester body 1 through the head-mounted bracket 8, the extension bracket 9 and the mounting bracket 10. The mounting bracket 10 is cooperated with the head-mounted bracket 10 to form an adjustable bracket structure to meet the wearing needs of patients of different age groups and provide mounting support for the test module, wherein the head-mounted bracket 8 is used to provide mounting support for the extended bracket 9, and the extended bracket 9 is used to form an adjustable bracket structure together with the head-mounted bracket 8 and provide mounting support for the mounting bracket 10, and the mounting bracket 10 is used to form a bracket structure together with the extended bracket 9 and the head-mounted bracket 8 and provide mounting support for the test module. The pulling action between the extended bracket 9 and the head-mounted bracket 8 can be achieved by adjusting the block to achieve the tightness adjustment of the bracket structure. The schematic diagram of the cooperation between the head-mounted module and the test module of the utility model is shown in Figure 3 shown.

[0028] The cushioning mechanism further includes a cushioning mechanism, which includes a cushioning spring 11 and a cushioning block 12. The cushioning spring 11 is arranged at the lower part of the head-mounted bracket 8 and its upper end is fixedly connected to the head-mounted bracket 8. The cushioning block 12 is arranged at the lower end of the cushioning spring 11 and is fixedly connected to the cushioning spring 11. The cushioning block 12 is elastically connected to the head-mounted bracket 8 through the cushioning spring 11. The cushioning mechanism cooperates with the cushioning spring 11 and the cushioning block 12 to serve as a cushioning structure on the inner side of the head-mounted bracket 8, thereby preventing a rigid collision between the patient's head and the bracket from causing injury to the patient during wearing. The cushioning spring 11 is used to provide installation support for the cushioning block 12, and the cushioning block 12 is used to be elastically connected to the head-mounted bracket 8 under the action of the cushioning spring 11 to serve as a cushioning structure on the inner side of the head-mounted bracket 8.

[0029] The positioning module includes a positioning screw 13, a positioning block 14 and a positioning protective pad 15. The positioning screw 13 is provided with two groups. The two groups of positioning screws 13 are respectively arranged at the lower part of the two groups of mounting brackets 10 and penetrate the mounting brackets 10 and are threadedly connected with the corresponding mounting brackets 10. The two groups of positioning screws 13 are arranged opposite to each other. The positioning blocks 14 are provided with two groups. The two groups of positioning blocks 14 are respectively arranged at the opposite ends of the two groups of positioning screws 13 and are fixedly connected with the corresponding positioning screws 13. The positioning protective pad 15 is provided with two groups. The two groups of positioning protective pads 15 are respectively arranged on the side of the two groups of positioning blocks 14 away from the positioning screws 13 and are fixedly connected with the corresponding positioning blocks 14. The positioning module is provided with a positioning screw. The rod 13, the positioning block 14 and the positioning protection pad 15 cooperate to form a positioning structure on the bracket structure to achieve relative positioning between the bracket and the patient's head, thereby relatively positioning the test module and the patient's ear, wherein the positioning screw 13 is used to provide the positioning block 14 with a mounting bracket 10 and drive the positioning block 14 to move horizontally through relative rotation between it and the mounting bracket 10, and the positioning block 14 is used to move horizontally under the action of the positioning screw 13 to abut against the patient's head, thereby achieving relative positioning between the bracket and the patient's head, and the positioning protection pad 15 is used as a protective structure on the positioning block 14 to prevent the positioning block 14 from causing damage to the patient's head.

[0030] It also includes a placement bracket 16, which is arranged on one side of the tester body 1 and fixedly connected to the tester body 1, and the head-mounted module is erected on the upper end of the placement bracket 16, wherein the placement bracket 16 is used as a placement structure on the tester body 1, thereby providing placement support for the head-mounted module.

[0031] The mobile module also includes a mobile base 17 and a mobile universal wheel 18. The mobile base 17 is provided with two groups. The two groups of mobile bases 17 are symmetrically arranged on both sides of the bottom of the tester body 1 and are fixedly connected to the tester body 1. The mobile universal wheel 18 is provided with two groups. Each group of mobile universal wheels 18 is composed of two universal wheels arranged side by side and spaced apart. The two groups of mobile universal wheels 18 are respectively arranged at the bottom of the two groups of mobile bases 17 and are fixedly connected to the corresponding mobile bases 17. The tester body 1 is erected on the ground through the mobile module. The mobile module cooperates with the mobile base 17 and the mobile universal wheel 18 to form a mobile structure at the bottom of the tester body 1, thereby providing mobile support for the tester body 1, wherein the mobile base 17 is used to provide installation support for the mobile universal wheel 18 and install the mobile universal wheel 18 at the bottom of the tester body 1, and the mobile universal wheel 18 is used to provide mobile support for the tester body 1 through the mobile base 17, and the position of the tester body 1 can be adjusted by the mobile mechanism.

[0032] The tester also includes an electric control unit 19 and a display screen 20. The electric control unit 19 is arranged on the upper part of the tester body 1 and is fixedly connected to the tester body 1. The display screen 20 is arranged on the upper end of the tester body 1 and is fixedly connected to the tester body 1 through a bracket. The electric control unit 19 is electrically connected to the test servo 4, the laser Doppler effect vibrometer 5 and the display screen 20. The electrical connection diagram of the utility model is shown in FIG. Figure 4 shown.

[0033] Among them, the laser Doppler effect vibrometer 5 in the present technical solution can adopt the laser Doppler effect vibrometer 5 disclosed in the prior art, and its detection principle is: the laser generator generates a high-frequency equal-amplitude laser signal to stimulate the transmitting transducer probe to generate continuous laser light, which is emitted to the eardrum to produce the Doppler effect. When the eardrum vibrates, the reflected signal is received by the transducer, and the precise position of the eardrum injury can be obtained based on the frequency difference between the reflected wave and the emitted wave. Its principle is similar to that of the existing color Doppler ultrasound equipment.

[0034] Among them, the electronic control components in this technical solution are electrically connected through wiring.

[0035] Working principle:

[0036] When it is necessary to perform a vibration test on the patient's tympanic membrane, the distance between the head-mounted bracket 8 and the extended bracket 9 is adjusted according to the size of the patient's head and the head-mounted module is worn on the patient's head. Then, the positioning screw 13 is rotated to drive the positioning block 14 to move horizontally so as to abut against the patient's head through the positioning protection pad 15, thereby achieving relative positioning between the head-mounted module and the patient's head, and making the test module located at the patient's ear. Then, the tester is controlled to work through the electronic control unit 19. The test module performs a vibration test on the patient's tympanic membrane to accurately detect the specific location and condition of the tympanic membrane trauma, and feeds back the detection results to the display screen 20. The detection results can be observed in real time through the display screen 20. During the detection process, the test servo 4 can be controlled by the electronic control unit 19 to drive the laser Doppler effect vibrometer 5 to rotate a certain angle, thereby performing all-round detection of the tympanic membrane.

[0037] The beneficial effects of the present invention are that it is provided with a test module, which can accurately measure the frequency changes of the tympanic membrane through a laser Doppler effect vibrometer to accurately detect the specific location and condition of the tympanic membrane trauma, and can formulate an accurate treatment plan according to the trauma condition with high accuracy. It is provided with a head-mounted module and a positioning module, and the test module can be stably assembled on the patient's ear to ensure the accuracy and stability of the detection. It is suitable for patients of different age groups.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A tympanic membrane vibration tester based on laser Doppler effect, comprising a tester body (1), wherein the tester body (1) is erected on the ground, and characterized in that: It also includes a test module for performing a vibration test on the eardrum, a head-mounted module for wearing the test module on the patient's ear, and a positioning module for positioning the head-mounted module. The test module is arranged at the bottom of the head-mounted module, the head-mounted module is configured on one side of the tester body (1), and the positioning module is assembled on the side of the head-mounted module.

2. The tympanic membrane vibration tester based on the laser Doppler effect as claimed in claim 1, characterized in that: The test module comprises a test shell (2), a test bracket (3), a test steering engine (4) and a laser Doppler effect vibrometer (5); the interior of the test shell (2) is a hollow structure and one side of the test shell is provided with a detection opening; the test bracket (3) is arranged inside the test shell (2) and is fixedly connected to the test shell (2); the test bracket (3) is arranged corresponding to the detection opening; the test steering engine (4) is arranged on one side of the test bracket (3) and is fixedly connected to the test bracket (3); the output end of the test steering engine (4) passes through the test bracket (3); the laser Doppler effect vibrometer (5) is arranged at the output end of the test steering engine (4) and is fixedly connected to the output end of the test steering engine (4); the laser Doppler effect vibrometer (5) is located on the inner side of the test bracket (3) and is arranged corresponding to the detection opening.

3. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 2, characterized in that: The invention also comprises a condenser (6) and a fitted cotton pad (7); the condenser (6) is arranged at one end of the laser Doppler effect vibrometer (5) close to the detection opening and is fixedly connected to the laser Doppler effect vibrometer (5); the condenser (6) is a trumpet-shaped cover structure; the fitted cotton pad (7) is arranged at a peripheral portion of one side of the test shell (2) where the detection opening is provided and is fixedly connected to the test shell (2); the fitted cotton pad (7) is an annular cotton pad structure.

4. The tympanic membrane vibration tester based on the laser Doppler effect as claimed in claim 3, characterized in that: There are two groups of test modules, which are symmetrically arranged on both sides of the lower part of the head-mounted module corresponding to the patient's ears.

5. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 4, characterized in that: The head-mounted module comprises a head-mounted bracket (8), an extension bracket (9) and a mounting bracket (10); the head-mounted bracket (8) is horizontally arranged and the upper end of the head-mounted bracket (8) is provided with a cable connected to the tester body (1); the extension bracket (9) is provided with two groups, the two groups of extension brackets (9) are symmetrically arranged at the two ends of the head-mounted bracket (8) and plugged with the head-mounted bracket (8) through an adjustment block; the mounting bracket (10) is provided with two groups, the two groups of mounting brackets (10) are respectively arranged at one end of the two groups of extension brackets (9) away from the head-mounted bracket (8) and are fixedly connected to the corresponding extension bracket (9) through screws; and the two groups of test modules are respectively arranged at the lower ends of the two groups of mounting brackets (10).

6. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 5, characterized in that: The invention also comprises a buffer mechanism, which comprises a buffer spring (11) and a buffer block (12); the buffer spring (11) is arranged at the lower part of the head-mounted bracket (8) and its upper end is fixedly connected to the head-mounted bracket (8); the buffer block (12) is arranged at the lower end of the buffer spring (11) and is fixedly connected to the buffer spring (11); the buffer block (12) is elastically connected to the head-mounted bracket (8) via the buffer spring (11).

7. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 6, characterized in that: The positioning module comprises a positioning screw (13), a positioning block (14) and a positioning protective pad (15). The positioning screw (13) is provided with two groups. The two groups of positioning screws (13) are respectively arranged at the lower part of the two groups of mounting brackets (10) and penetrate the mounting brackets (10) and are threadedly connected with the corresponding mounting brackets (10). The two groups of positioning screws (13) are arranged opposite to each other. The positioning blocks (14) are provided with two groups. The two groups of positioning blocks (14) are respectively arranged at the opposite ends of the two groups of positioning screws (13) and are fixedly connected with the corresponding positioning screws (13). The positioning protective pad (15) is provided with two groups. The two groups of positioning protective pads (15) are respectively arranged at the side of the two groups of positioning blocks (14) away from the positioning screws (13) and are fixedly connected with the corresponding positioning blocks (14).

8. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 7, characterized in that: It also comprises a placement bracket (16), wherein the placement bracket (16) is arranged on one side of the tester body (1) and is fixedly connected to the tester body (1), and the head-mounted module is mounted on the upper end of the placement bracket (16).

9. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 8, characterized in that: The invention also comprises a mobile module, which comprises a mobile base (17) and mobile universal wheels (18). The mobile base (17) is provided with two groups, and the two groups of mobile bases (17) are symmetrically arranged on both sides of the bottom of the tester body (1) and are fixedly connected to the tester body (1). The mobile universal wheels (18) are provided with two groups, and each group of the mobile universal wheels (18) is composed of two universal wheels arranged side by side at intervals. The two groups of mobile universal wheels (18) are respectively arranged at the bottom of the two groups of mobile bases (17) and are fixedly connected to the corresponding mobile bases (17). The tester body (1) is erected on the ground through the mobile module.

10. The tympanic membrane vibration tester based on laser Doppler effect as claimed in claim 9, characterized in that: It also comprises an electric control unit (19) and a display screen (20); the electric control unit (19) is arranged on the upper part of the tester body (1) and is fixedly connected to the tester body (1); the display screen (20) is arranged on the upper end of the tester body (1) and is fixedly connected to the tester body (1) via a bracket; the electric control unit (19) is electrically connected to the test servo (4), the laser Doppler effect vibrometer (5) and the display screen (20).

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