Medical neck motion range measuring device

Abstract

The utility model discloses a medical neck range of motion measuring device, including electronic inclinometer subassembly, fixed plate, rotating plate, spirit bubble, benchmark subassembly and brake screw, the electronic inclinometer subassembly is located the front end of fixed plate and is connected on the fixed plate, the rotating plate is located the other end of fixed plate, and the rotating plate is rotatingly connected on the fixed plate, the benchmark subassembly is fixed on the fixed plate. The horizontal bubble is located at the top of the rotating plate and connected to the center position of the rotating plate, the reference assembly is perpendicular to the horizontal bubble and arranged below the rotating plate, the reference assembly is connected to the rotating plate, and the brake screw rod is vertically arranged on one side of the rotating plate and connected to the top end of the rotating plate in a threaded mode. Only when the angle line in the observation hole is 0 degree, the ray of the laser lamp irradiates the nose tip of the patient and the bubble in the spirit bubble is in the middle position, the neck of the patient can be rotationally measured, a doctor does not need to carry out estimation, and therefore errors are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a medical neck mobility measuring device. Background Art

[0002] At present, the measurement of cervical spine mobility is required for physical examination of cervical spondylosis, motor function assessment before and after surgical treatment of cervical spondylosis, and functional assessment of rehabilitation treatment of cervical spondylosis. There are usually three types of cervical spine mobility measuring instruments in the prior art: the first type is a medical protractor with a fixed arm and a movable arm. During actual measurement, the doctor needs to estimate the position of the movable arm and the head, which has poor accuracy; the second type is a measuring ruler with a simple structure, which can only roughly determine the deflection distance and cannot accurately measure the deflection angle. Due to the difference in head size between different patients, the reference value of its measurement value is not strong enough; the third type is an instrument for measuring the deflection angle of the head, but this type of instrument can often only measure the deflection angle in the horizontal or vertical direction, which cannot meet the needs of multi-dimensional measurement. In addition, many types of measuring instruments require the patient's body to be fixed, which is inconvenient to use. Utility Model Content

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, which exist in that during actual measurement, the doctor needs to estimate the position of the movable arm and the head, which has poor accuracy, and can only roughly determine the deflection distance, but cannot accurately measure the deflection angle and cannot meet the needs of multi-dimensional measurement. At the same time, many types of measuring instruments require the patient's body to be fixed, which is inconvenient to use.

[0004] A medical neck mobility measuring device is proposed, comprising an electronic inclinometer assembly, a fixed plate, a rotating plate, a level bubble, a reference assembly and a brake screw, wherein the electronic inclinometer assembly is located at the front end of the fixed plate and is connected to the fixed plate, the rotating plate is located at the other end of the fixed plate and is rotatably connected to the fixed plate, the level bubble is located at the top of the rotating plate and is connected to the center of the rotating plate, the reference assembly is perpendicular to the level bubble and is arranged below the rotating plate, and the reference assembly is connected to the rotating plate, and the brake screw is vertically arranged on one side of the rotating plate and is threadedly connected to the top end of the rotating plate.

[0005] In the technical solution of the present invention, after the patient wears the fixing plate and the rotating plate on the forehead using the second magic sticky hair surface and the second magic sticky soft hair surface, the laser light can be started. When the laser light irradiates the patient's nose tip and the angle line inside the observation hole is 0 degrees, the patient can fix the rotating plate with his hands and then rotate his head to measure the rotation range of the cervical joint. When rotating the head, the value inside the electronic inclinometer must always be kept at 0. Then, after the patient's head has been rotated left and right, the angle of the patient's head rotation can be read through the observation hole. When measuring the range of motion of the cervical lateral flexion joint and the range of motion of the cervical flexion and extension joint, it is only necessary to turn the electronic inclinometer to the vertical position. The sub-inclinometer is glued to the placement slot at the front end of the fixing plate. When the value inside the electronic inclinometer remains at 0, the patient's head makes corresponding movements to complete the measurement. There is no need for the doctor to make an estimate. During the measurement, the patient's body does not need to be fixed, and it can be removed immediately after use. This is used to solve the problem mentioned in the technical background that during actual measurement, the doctor needs to estimate the position of the movable arm and the head, which has poor accuracy and can only roughly determine the deflection distance. The deflection angle cannot be accurately measured and cannot meet the needs of multi-dimensional measurement. At the same time, many types of measuring instruments require the patient's body to be fixed, which is inconvenient to use.

[0006] In the preferred embodiment of the technical solution of the present invention, an angle line is drawn on the top of the fixing plate, and placement grooves are provided on the front end of the fixing plate and the side plate on one side of the fixing plate. The electronic inclinometer assembly is connected to the placement groove. After measuring the patient's cervical joint rotation range of motion, the electronic inclinometer assembly can be connected to the placement groove to measure the patient's cervical lateral flexion joint range of motion and cervical flexion and extension joint range of motion.

[0007] The preferred technical solution of the utility model is that the electronic inclinometer assembly includes an electronic inclinometer, a first magic sticky hair surface and a first magic sticky soft hair surface. The first magic sticky hair surface is bonded to the back of the electronic inclinometer. There are two first magic sticky soft hair surfaces. The two first magic sticky soft hair surfaces are respectively arranged in the placement grooves opened on the front end of the fixed plate and the side plate, and are both bonded to the inner wall of the placement groove. The magic stick has high flexibility and multiple uses, so the head circumference of the elastic strap can be flexibly changed to adapt to the patient's head circumference.

[0008] In the preferred technical solution of the present invention, a connecting groove is provided on the top of the rotating plate, and the leveling bubble is fixedly connected to the inside of the connecting groove. Elastic straps are connected to both ends of the rotating plate, and the two sets of elastic straps are respectively connected to a second magic sticky burr surface and a second magic sticky soft fur surface. When the patient wears the fixed plate and the rotating plate, the leveling bubble can ensure that the fixed plate and the rotating plate are level, so as to ensure the accuracy of the patient's measurement.

[0009] In the preferred technical solution of the present invention, an observation hole is provided on the rotating plate at one side of the connecting groove, and the observation hole is perpendicular to the angle line. After the patient's head rotates left and right, the angle line can be viewed through the observation hole to obtain the angle of rotation of the patient's head.

[0010] The preferred technical solution of the present invention is that the reference assembly includes a fixed seat, a rotating shaft, a ratchet, a ratchet, a pressure rod, a guide shell and a spring. The fixed seat is bonded to the rotating plate, and a slot is vertically provided inside the fixed seat. The rotating shaft is arranged to rotate laterally inside the fixed seat. The ratchet is located on one side of the slot and is vertically connected to the inside of the fixed seat, and the ratchet is connected to the rotating shaft. The guide shell is located below the ratchet and connected to the inside of the fixed seat. The ratchet is vertically slidably arranged inside the guide shell. The spring is located on one side of the ratchet and is arranged inside the guide shell. The pressure rod is located on one side of the ratchet and one end of the pressure rod is connected to the ratchet. The other end of the pressure rod passes through the fixed seat and is arranged on the outside of the fixed seat. The reference assembly can be used to adjust the irradiation position and irradiation angle of the laser lamp to ensure that the laser lamp rays can be irradiated at the tip of the patient's nose.

[0011] In a preferred embodiment of the technical solution of the present invention, a laser lamp is provided on the rotating shaft, and the rays of the laser lamp are always irradiated on the tip of the patient's nose when the patient's head rotates, so as to avoid measurement errors.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When measuring a patient, the utility model can only measure the patient's neck rotation when the angle line inside the observation hole is 0 degrees, the laser light irradiates the patient's nose tip and the bubble inside the horizontal bubble is in the middle position. There is no need for the doctor to make an estimate, thereby avoiding errors. When the patient is measured, it is only necessary to straighten the body and put the head in a neutral position. There is no need to fix the patient's body. After the measurement is completed, the fixed plate and the rotating plate can be immediately removed from the patient's head. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a medical neck range of motion measurement device;

[0015] Figure 2 This is a schematic diagram of the working state of the medical neck range of motion measurement device;

[0016] Figure 3 A schematic diagram of the structure coordination between the fixed plate and the movable plate of a medical neck range of motion measurement device;

[0017] Figure 4 This is a schematic diagram of the fixing plate structure of a medical neck range of motion measurement device;

[0018] Figure 5This is a schematic diagram of the reference component structure of a medical neck range of motion measurement device;

[0019] Figure 6 A schematic diagram of the internal structure of the reference assembly of a medical neck range of motion measurement device (the fixed base is a whole, with a piece removed to show the internal structure);

[0020] Figure 7 A schematic diagram of the internal structure of the guide housing of the reference assembly of a medical neck range of motion measurement device (the guide housing is a whole, with a section removed to show the internal structure);

[0021] In the figure: 1-electronic inclinometer assembly, 11-electronic inclinometer, 12-magic sticky hair surface, 13-first magic sticky soft hair surface, 2-fixing plate, 21-angle line, 3-rotating plate, 31-connecting groove, 32-elastic strap, 33-second magic sticky hair surface, 34-second magic sticky soft hair surface, 4-level bubble, 5-reference assembly, 51-fixing seat, 52-rotating shaft, 53-ratchet, 54-ratchet, 55-pressure rod, 56-guide shell, 57-spring, 6-brake screw, 7-placement groove, 8-observation hole, 9-laser light. DETAILED DESCRIPTION

[0022] The following is a combination of the appended examples of the present invention Figure 1-7 , the technical solutions in the embodiments of the present utility model are described in detail.

[0023] like Figure 1-4 As shown, a medical neck mobility measuring device includes an electronic inclinometer assembly 1, a fixed plate 2, a rotating plate 3, a level bubble 4, a reference assembly 5 and a brake screw 6. The electronic inclinometer 11 is vertically arranged at the front end of the fixed plate 2, and the electronic inclinometer assembly 1 is connected to the fixed plate 2. Therefore, when the fixed plate 2 is tilted, the electronic inclinometer assembly 1 can measure the angle between the fixed plate 2 and the ground. A placement groove 7 is provided on the front end of the fixed plate 2 and the side plate of the rotating plate 3, and the electronic inclinometer assembly 1 is connected to the placement groove 7.

[0024] like Figure 1-4 As shown, when the electronic inclinometer assembly 1 is placed in the placement slot 7 at the front end of the fixed plate 2, when the patient's head then swings left and right, the electronic inclinometer assembly 1 can measure the left and right lateral flexion angles of the neck. When the electronic inclinometer assembly 1 is placed in the placement slot 7 on one side of the rotating plate 3, when the patient's head is flexed and extended, the electronic inclinometer assembly 1 can measure the flexion and extension angles of the patient's neck. The electronic inclinometer assembly 1 is located at one end of the fixed plate 2, and the rotating plate 3 is located at the other end of the fixed plate 2.

[0025] like Figure 1-4As shown, a sliding groove is provided on the fixed plate 2 according to the curvature of the fixed plate 2, and the rotating plate 3 is rotatably set on the fixed plate 2 through the sliding groove on the fixed plate 2, so the rotating plate 3 and the fixed plate 2 can rotate relative to each other. The rotating plate 3 is made of elastic plastic, so the two ends of the rotating plate 3 can be opened outward synchronously to clamp and fix the patient's forehead, so the patient's forehead can drive the rotating plate 3 to rotate synchronously when it rotates, and a connecting groove 31 is provided at the top of the rotating plate 3.

[0026] like Figure 1-4 As shown, the horizontal bubble 4 is located at the top of the rotating plate 3, and the horizontal bubble 4 is bonded to the inside of the connecting groove 31, so the rotating plate 3 will drive the horizontal bubble 4 to rotate together when it rotates, and when the rotating plate 3 is worn on the patient's forehead, the horizontal bubble 4 can also be used to observe whether the rotating plate 3 is in a horizontal state. The reference component 5 is perpendicular to the horizontal bubble 4 and is arranged below the rotating plate 3, and the reference component 5 is bonded to the bottom of the rotating plate 3. When the patient wears the rotating plate 3, the reference component 5 will be aligned with the tip of the patient's nose.

[0027] like Figure 1-4 As shown, since the reference component 5 is bonded to the bottom of the rotating plate 3, when the rotating plate 3 rotates, the rotating plate 3 will synchronously drive the reference component 5 to rotate together, so the reference component 5 will always be aligned with the patient's nose tip, which serves as a measurement reference when the rotating plate 3 rotates. The brake screw 6 is vertically arranged on one side of the rotating plate 3 and is threadedly connected to the preset threaded hole at the top of the rotating plate 3. The preset threaded hole at the top of the rotating plate 3 is a through hole, so when the rotating plate 3 needs to be rotated, the brake screw 6 can be rotated forward.

[0028] like Figure 1-4 As shown, the bottom end of the brake screw 6 is disengaged from the fixed plate 2. At this time, the rotating plate 3 and the fixed plate 2 can rotate relative to each other. When the rotating plate 3 does not need to rotate, the brake screw 6 can be rotated in the opposite direction until the bottom end of the brake screw 6 conflicts with the top end of the fixed plate 2. At this time, the fixed plate 2 and the rotating plate 3 can no longer rotate relative to each other, thereby connecting the fixed plate 2 and the rotating plate 3 into a whole.

[0029] like Figure 1-4 As shown, an angle line 21 is drawn on the top of the fixed plate 2 according to the curvature of the fixed plate 2, and an observation hole 8 is opened at the center position of the top of the rotating plate 3, and the observation hole 8 and the angle line 21 are perpendicular to each other. Therefore, when the rotating plate 3 completes the rotation, the angle line 21 scale on the top of the fixed plate 2 can be viewed through the observation hole 8, and the angle of rotation of the rotating plate 3 can be obtained through the angle line 21 revealed by the observation hole 8. Then, the angle of rotation of the patient's head can be obtained through the angle of rotation of the rotating plate 3.

[0030] like Figure 1-4As shown, a connecting groove 31 is provided at the top of the rotating plate 3, and the horizontal bubble 4 is arranged in the connecting groove 31, and the horizontal bubble 4 is bonded to the inside of the connecting groove 31, so when the rotating plate 3 rotates, the horizontal bubble 4 will be driven to rotate together. When the patient wears the fixed plate 2, the horizontal position of the rotating plate 3 and the fixed plate 2 can be observed through the horizontal bubble 4 to avoid the rotating plate 3 and the fixed plate 2 being in an inclined position when the patient wears and rotates the rotating plate 3. Elastic straps 32 are connected to both ends of the rotating plate 3, and two sets of elastic straps 32 are bonded to the rotating plate 3.

[0031] like Figure 1-4 As shown, the two groups of elastic straps 32 are respectively sewn with a second magic sticky hair surface 33 and a second magic sticky soft hair surface 34. The second magic sticky hair surface 33 is located on the front side of one group of elastic straps 32, and the second magic sticky soft hair surface 34 is located on the back side of the other group of elastic straps 32. Therefore, the two groups of elastic straps 32 can be bonded together through the second magic sticky hair surface 33 and the second magic sticky soft hair surface 34. After the second magic sticky hair surface 33 and the second magic sticky soft hair surface 34 are bonded together, they can form a circle with the rotating plate 3. At this time, the patient can fix the rotating plate 3 on the forehead through the second magic sticky hair surface 33 and the second magic sticky soft hair surface 34.

[0032] like Figure 1-4 As shown, the electronic inclinometer assembly 1 includes an electronic inclinometer 11, a first magic sticky burr surface 12 and a first magic sticky soft fleece surface 13. The first magic sticky burr surface 12 is bonded to the back of the electronic inclinometer 11. There are two first magic sticky soft fleece surfaces 13. The two first magic sticky soft fleece surfaces 13 are respectively arranged in the placement grooves 7 opened on the front end and side panels of the fixing plate 2, and are both bonded to the inner wall of the placement groove 7. Therefore, when fixing the electronic inclinometer 11, the first magic sticky burr surface 12 and the first magic sticky soft fleece surface 13 can be used.

[0033] like Figure 1-4 As shown, the electronic inclinometer 11 is bonded to the placement groove 7 at the front end of the fixed plate 2 and the side plate. At this time, the fixed plate 2 and the rotating plate 3 are fixed together by the brake screw 6. Therefore, when the electronic inclinometer 11 is bonded to the placement groove 7, the patient's head can flex and extend forward and backward and flex to the left and right sides. When the electronic inclinometer 11 follows the patient's head movement, it can measure the flexion and extension of the neck to the left and right sides and the flexion and extension of the neck to the front and back.

[0034] like Figure 5-7As shown, the reference assembly 5 includes a fixed seat 51, a rotating shaft 52, a ratchet 53, a ratchet 54, a pressure rod 55, a guide shell 56 and a spring 57. The fixed seat 51 is vertically arranged and bonded to the center position below the rotating plate 3, and the fixed seat 51 is perpendicular to the observation hole 8. The interior of the fixed seat 51 is vertically provided with a slot, the laser lamp 9 is arranged inside the slot and bonded to the rotating shaft 52, and the axis of the laser lamp 9 is perpendicular to the observation hole 8. The rotating shaft 52 is laterally rotatably connected to the interior of the fixed seat 51, the ratchet 53 is vertically arranged on one side of the slot and inside the fixed seat 51, and the ratchet 53 is connected to the rotating shaft 52 through a pin key.

[0035] like Figure 5-7 As shown, when the rotating shaft 52 rotates, the ratchet 53 will be driven to rotate together. The guide shell 56 is arranged below the ratchet 53 and is connected to the inside of the fixed seat 51 by screws. The ratchet 54 is vertically slidably arranged inside the guide shell 56, so the ratchet 54 can slide back and forth inside the guide shell 56 along the length direction of the guide shell 56. The spring 57 is located on one side of the ratchet 54 and is laterally arranged inside the guide shell 56. The pressure rod 55 is located on the other side of the ratchet 54, and one end of the pressure rod 55 is bonded to the bottom of the ratchet 54, and the other end of the pressure rod 55 passes through the guide seat and is arranged on the outside of the fixed seat 51.

[0036] like Figure 5-7 As shown, when the pressure rod 55 is pressed, the ratchet 54 will slide laterally in the direction of the spring 57 and begin to squeeze the spring 57. At this time, the ratchet 53 can drive the rotating shaft 52 to rotate. After the rotating shaft 52 rotates to the desired position, the pressure rod 55 can be released. At this time, the ratchet 54 will be reset to the bottom of the ratchet 53 under the action of the spring 57 and clamp the ratchet 53. The rotating shaft 52 is clamped by the ratchet 53 to prevent the rotating shaft 52 from driving the laser lamp 9 to continue rotating.

[0037] The movement process of this embodiment: after using the second magic sticky hair surface 33 and the second magic sticky soft hair surface 34 to adjust the elastic strap 32 to a suitable head circumference, the elastic strap 32 can be used to fix the fixed plate 2 and the rotating plate 3 to the patient's forehead. When wearing, the placement groove 7 at the front end of the fixed plate 2 is located in the middle of the user's forehead and the middle of the back of the head, and the placement groove 7 at the side plate position of the fixed plate 2 is located above the user's ear, thereby completing the wearing. After the patient has finished wearing, the leveling bubble 4 can be used to adjust the rotating plate 3 and the fixed plate 2 to a horizontal position, thereby avoiding differences in measurement results due to inappropriate head circumference size or subjective measurement by the measurer.

[0038] After adjusting the rotating plate 3 and the fixed plate 2 to a horizontal position, rotate the brake screw 6 forward until the bottom of the brake screw is out of contact with the fixed plate 2. Then, press the pressure rod 55 and rotate the laser lamp 9 until the beam from the laser lamp 9 reaches the tip of the patient's nose. Then release the pressure rod 55. At this time, the angle line 21 revealed inside the observation hole 8 is 0 degrees.

[0039] When measuring the rotational range of motion of the cervical vertebrae joint, the user stands or sits with the head in a neutral position, and then manually fixes the fixing plate 2. The patient's head can be rotated left and right and the angle of the patient's head rotation is recorded (the normal value of the left and right rotation angle of the head is 0-75 degrees). After the measurement is completed, the rotating plate 3 can be reset to the initial position, and then the braking screw 6 is rotated in the opposite direction until the bottom of the braking screw 6 contacts the top of the fixing plate 2.

[0040] When measuring the range of motion of the cervical lateral flexion joint, the electronic inclinometer 11 is bonded to the placement slot 7 at the front end of the fixing plate 2. The user stands or sits with the head in a neutral position. At this time, the value of the electronic inclinometer 11 is zero. The user first flexes the cervical spine to the left to the maximum limit and records the value of the electronic inclinometer 11 at this time. The user straightens the head to make the value of the electronic inclinometer 11 return to zero. The user then flexes the cervical spine to the right to the maximum limit and records the value of the electronic inclinometer 11 at this time, thereby measuring the range of motion of the cervical lateral flexion joint (the normal value of the left and right lateral flexion angles of the head is 0-45 degrees).

[0041] When measuring the range of motion of the cervical flexion and extension joint, the electronic inclinometer 11 is bonded to the placement slot 7 on one side of the fixing plate 2. The user stands or sits with the head in a neutral position. At this time, the value of the electronic inclinometer 11 is zero. The user first flexes the cervical spine to the maximum limit and records the value of the electronic inclinometer 11 at this time. The user straightens the head to make the value of the electronic inclinometer 11 return to zero. The user then extends the cervical spine to the maximum limit and records the value of the electronic inclinometer 11 at this time, thereby measuring the range of motion of the cervical flexion and extension joint (the normal value of the head flexion and extension angle is 0-45 degrees).

[0042] The above embodiments are only for illustrating the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A medical neck range of motion measuring device, characterized by: The invention comprises an electronic inclinometer assembly (1), a fixed plate (2), a rotating plate (3), a level bubble (4), a reference assembly (5) and a brake screw (6), wherein the electronic inclinometer assembly (1) is located at the front end of the fixed plate (2) and is connected to the fixed plate (2), the rotating plate (3) is located at the other end of the fixed plate (2), and the rotating plate (3) is rotatably connected to the fixed plate (2), the level bubble (4) is located at the top of the rotating plate (3) and is connected to the center of the rotating plate (3), the reference assembly (5) is perpendicular to the level bubble (4) and is arranged below the rotating plate (3), and the reference assembly (5) is connected to the rotating plate (3), and the brake screw (6) is vertically arranged on one side of the rotating plate (3) and is threadedly connected to the top of the rotating plate (3).

2. The medical neck range of motion measuring device according to claim 1, characterized in that: An angle line (21) is drawn on the top of the fixing plate (2), and a placement groove (7) is provided on the front end of the fixing plate (2) and a side plate on one side of the fixing plate (2), and the electronic inclinometer assembly (1) is connected to the placement groove (7).

3. The medical neck range of motion measuring device according to claim 2, characterized in that: The electronic inclinometer assembly (1) comprises an electronic inclinometer (11), a first magic sticky burr surface (12) and a first magic sticky soft burr surface (13), wherein the first magic sticky burr surface (12) is bonded to the back of the electronic inclinometer (11), and there are two first magic sticky soft burr surfaces (13). The two first magic sticky soft burr surfaces (13) are respectively arranged in placement grooves (7) provided on the front end and the side plate of the fixing plate (2), and are both bonded to the inner wall of the placement groove (7).

4. The medical neck range of motion measuring device according to claim 1, characterized in that: A connecting groove (31) is provided on the top of the rotating plate (3), and the horizontal bubble (4) is fixedly connected to the inside of the connecting groove (31). Both ends of the rotating plate (3) are connected to elastic bands (32), and the two sets of elastic bands (32) are respectively connected to a second magic sticky burr surface (33) and a second magic sticky soft fleece surface (34).

5. The medical neck range of motion measuring device according to claim 4, characterized in that: An observation hole (8) is provided on the rotating plate (3) at a position on one side of the connecting groove (31), and the observation hole (8) is perpendicular to the angle line (21).

6. The medical neck range of motion measuring device according to claim 1, characterized in that: The reference assembly (5) includes a fixed seat (51), a rotating shaft (52), a ratchet (53), ratchet teeth (54), a pressure rod (55), a guide shell (56) and a spring (57). The fixed seat (51) is bonded to the rotating plate (3), and a slot is vertically provided inside the fixed seat (51). The rotating shaft (52) is arranged inside the fixed seat (51) for transverse rotation. The ratchet (53) is located on one side of the slot and is vertically connected to the inside of the fixed seat (51). The ratchet (53) is connected to the rotating shaft. (52), the guide housing (56) is located below the ratchet (53) and connected to the inside of the fixed seat (51), the ratchet (54) is vertically slidably arranged inside the guide housing (56), the spring (57) is located on one side of the ratchet (54) and is arranged inside the guide housing (56), the pressure rod (55) is located on one side of the ratchet (54) and one end of the pressure rod (55) is connected to the ratchet (54), and the other end of the pressure rod (55) passes through the fixed seat (51) and is arranged outside the fixed seat (51).

7. The medical neck range of motion measuring device according to claim 6, characterized in that: A laser lamp (9) is provided on the rotating shaft (52).

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