Neck muscle power generation experiment device and experiment method

Abstract

The invention provides a neck muscle force application experimental device and experimental method, relates to the technical field of measurement, and aims to solve the technical problem of poor neck muscle force application measurement accuracy. The experimental device comprises a first bracket, a second bracket, a first detection part, a second detection part, a plurality of moving modules and a seat arranged between the first bracket and the second bracket, the first support is provided with a first guide rail, the second support is provided with a second guide rail, the first detection part is slidably arranged on the first guide rail through a corresponding moving module, and the second detection part is slidably arranged on the second guide rail through a corresponding moving module. The moving module comprises a base table and a sliding table arranged on the base table in a sliding mode. The base table of the moving module is arranged on the first guide rail or the second guide rail in a sliding mode. The first guide rail and the second guide rail extend in the first direction, all the sliding tables slide in the second direction, and the first direction is perpendicular to the second direction. The first detection part is arranged on the sliding table of the corresponding moving module. The experimental device is high in cervical vertebra measurement data accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of cervical muscle force measurement, and in particular to a cervical muscle force experimental device and an experimental method. Background Art

[0002] At present, when testing the neck muscles, there are problems such as different heights and sitting heights of different subjects, large deformation of the test platform when subjected to force, affecting the experimental accuracy, and no real-time visualization of the force data. The existing neck muscle force measurement brackets all adopt a cantilever structure with insufficient rigidity. During the test, it is difficult to avoid the influence of lateral force and large deformation in the main force direction on the experimental results. Summary of the invention

[0003] The purpose of the present invention is to provide a cervical muscle force experimental device and an experimental method to solve the technical problem of poor accuracy in measuring cervical muscle force.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a cervical muscle force experimental device, comprising a first bracket, a second bracket, a first detection unit, a second detection unit, a plurality of mobile modules, and a seat disposed between the first bracket and the second bracket;

[0006] The first bracket has a first guide rail, the second bracket has a second guide rail, the first detection part is slidably arranged on the first guide rail through the corresponding moving module, and the second detection part is slidably arranged on the second guide rail through the corresponding moving module;

[0007] The mobile module comprises a base and a slide slidably arranged on the base, and the base of the mobile module is slidably arranged on the first guide rail or the second guide rail;

[0008] Wherein, the first guide rail and the second guide rail both extend along a first direction, each of the slides slides along a second direction, and the first direction is perpendicular to the second direction;

[0009] The first detection unit is disposed on the slide corresponding to the moving module, and is used to measure the force exerted at the chin when the cranial neck is flexed;

[0010] The second detection unit is arranged on the slide platform corresponding to the moving module, and is used to measure the force at the back of the head when the neck and chest are extended or the cranial neck is extended.

[0011] According to at least one embodiment of the present invention, the experimental device further comprises a third detection unit, and the third detection unit is slidably disposed on the first guide rail through the corresponding moving module;

[0012] The third detection unit is arranged on the slide platform corresponding to the moving module, and is used to measure the force exerted on the forehead when the neck and chest are flexed.

[0013] According to at least one embodiment of the present invention, the experimental device further comprises a support portion, and the support portion is slidably disposed on the second guide rail via the corresponding moving module;

[0014] The support portion is arranged on the slide platform corresponding to the moving module, and is used for limiting the position of the back of the head when the skull and neck are extended backward.

[0015] According to at least one embodiment of the present invention, the first detection part, the second detection part and the third detection part each include a first bracket and a sensor, and the first bracket is disposed on the slide of the corresponding moving module through the sensor.

[0016] According to at least one embodiment of the present invention, the force-bearing surface of the first bracket of the first detection portion faces upward.

[0017] According to at least one embodiment of the present invention, a force-bearing surface of the first bracket of the second detection portion faces the first support.

[0018] According to at least one embodiment of the present invention, a force-bearing surface of the first bracket of the third detection portion faces the second bracket.

[0019] According to at least one embodiment of the present invention, the supporting portion includes a second bracket, the second bracket is disposed on the slide platform corresponding to the moving module, and the force-bearing surface of the second bracket faces the first bracket.

[0020] According to at least one embodiment of the present invention, the experimental device further includes an electromyographic measurement unit and a controller, and the sensor of the first detection part, the sensor of the second detection part, the sensor of the third detection part and the electromyographic measurement unit are respectively communicatively connected to the controller.

[0021] According to at least one embodiment of the present invention, the first detection portion further includes a restraining belt, and two ends of the restraining belt are respectively connected to two ends of the first bracket of the first detection portion.

[0022] According to at least one embodiment of the present invention, the slide platform has a dovetail-shaped slide groove, and the base platform has a tenon portion that cooperates with the slide groove;

[0023] The mobile module further comprises a locking bolt, one end of which passes through the slide and is screwed onto the tenon, and a nut of the locking bolt abuts against the slide.

[0024] In a second aspect, the present invention further provides a method for testing the cervical muscle force, which uses the experimental device described in the first aspect to measure the cervical muscle force.

[0025] Among the one or more technical solutions provided in the exemplary embodiments of the present invention, at least one of the following beneficial effects can be achieved.

[0026] In the cervical muscle force experimental device of the exemplary embodiment of the present invention, the subject sits on the seat and is located between the first bracket and the second bracket. A first detection unit and a third detection unit that can move in the vertical direction and the horizontal direction are arranged on the first bracket through a mobile module, and the first detection unit and the third detection unit are arranged on different mobile modules; a second detection unit and a support unit that can move in the vertical direction and the horizontal direction are arranged on the second bracket through a mobile module; the relative position relationship of the first detection unit, the third detection unit, the second detection unit and the support unit can be adjusted according to the position of the subject's head and the corresponding constraint conditions, so as to realize the requirements of the two-stage cervical spine test movement of craniocervical flexion CCF, craniocervical extension CCE, cervicothoracic flexion CTF and cervicothoracic extension CTE. According to the synchronous measurement of the subject's electromyographic signal. Based on this, through the cooperation and constraint of the first detection unit, the third detection unit, the second detection unit and the support unit during the measurement process, the subject can exert correct force during the cervical spine test movement, thereby avoiding the problem of poor accuracy of cervical spine measurement data caused by incorrect force.

[0027] Furthermore, through the cooperation between the third detection unit and the second detection unit, the third detection unit is used to measure the force at the chin during craniocervical extension CCE, while the second detection unit is moved to the occipital bone as a motion constraint. Compared with using the second detection unit to measure the force at the back of the skull, the support unit uses the occipital bone as a motion constraint, which can more accurately measure the force during craniocervical extension CCE. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings illustrate exemplary embodiments of the present invention and together with the description serve to explain the principles of the present invention, and these drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification;

[0029] Figure 1 is a schematic diagram of the main structure of an experimental device according to an embodiment of the present invention;

[0030] Figure 2 is an axonometric structural schematic diagram of an experimental device according to an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the isometric structure of a first detection unit according to an embodiment of the present invention;

[0032] Figure 4is a schematic diagram of the isometric structure of a third detection unit according to an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of a two-stage cervical spine test according to an embodiment of the present invention;

[0034] Fig. 6A is an electromyogram during craniocervical flexion (with restraint) according to an embodiment of the present invention;

[0035] Figure 6B is an electromyogram during craniocervical flexion (without constraint) according to an embodiment of the present invention;

[0036] Fig. 7A is an electromyogram during craniocervical extension (with restraint) according to an embodiment of the present invention;

[0037] Figure 7B is an electromyogram during craniocervical extension (without restraint) according to an embodiment of the present invention;

[0038] Figure 7C is an electromyogram during craniocervical extension (headband type) according to an embodiment of the present invention;

[0039] Fig. 8A is the electromyogram during cervicothoracic flexion (with constraint) according to an embodiment of the present invention;

[0040] Figure 8B is the electromyogram during cervicothoracic flexion (without constraint) according to an embodiment of the present invention;

[0041] Fig.9A is an electromyogram during cervical and thoracic extension (with constraints) according to an embodiment of the present invention;

[0042] Fig. 9B 3 is an electromyogram of the cervical thoracic extension (without constraint) according to an embodiment of the present invention.

[0043] Reference numerals:

[0044] 11. first detection unit; 111. first bracket; 112. first sensor; 113. headband; 12. second detection unit; 13. third detection unit; 132. third sensor; 14. support unit;

[0045] 20. Mobile module; 21. Base; 22. Slide; 221. Tenon; 23. Locking bolt; 24. Long hole; 25. Slide groove;

[0046] 31, first bracket; 311, first guide rail; 32, second bracket; 321, second guide rail; 322, third guide rail;

[0047] 40. Seat. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] The cervical spine usually moves or maintains posture under the joint action of multiple cervical muscles. Due to the lack of a dedicated cervical muscle fatigue experimental platform, the test movements are mostly single-segment measurements with relatively simple movements. They cannot reflect the fatigue characteristics induced by craniocervical and cervical-thoracic movements in the sagittal plane, and are not conducive to a comprehensive analysis of the biomechanical characteristics of cervical muscle fatigue.

[0050] In response to the above problems, the cervical muscle force experimental device of an exemplary embodiment of the present invention can constrain the subject to perform effective flexion and extension movements of the cranial cervical and cervical thoracic segments through the coordinated cooperation of various detection units, induce cervical muscle fatigue by isometric contraction, and synchronously collect external force and multi-channel surface electromyography signals during the fatigue process, so as to accurately and comprehensively obtain the force data of the cranial cervical and cervical thoracic segments.

[0051] Figure 5 It is a schematic diagram of a two-stage cervical spine test according to an embodiment of the present invention. The cervical muscle force experimental device of the exemplary embodiment of the present invention creatively proposes to realize the two-stage force test of the craniocervical segment and the cervical thoracic segment through the same device, specifically including the tests of craniocervical flexion CCF, craniocervical extension CCE, cervical thoracic flexion CTF, cervical thoracic extension CTE, etc., wherein the first two mainly activate the deep muscles of the neck, and the latter two simultaneously activate the deep and superficial muscles. Therefore, this experimental device can study the fatigue of the main deep muscle groups, superficial muscle groups and deep and superficial muscle groups during the neck movement force process, more accurately reflect the cervical muscle force data, and provide scientific guidance for the evaluation of cervical muscle fatigue.

[0052] Figure 1 is a schematic diagram of the main structure of an experimental device according to an embodiment of the present invention; Figure 2 Schematic diagram of the isometric structure of the experimental device according to the embodiment of the present invention. Figure 1 and Figure 2As shown, the cervical muscle force experimental device of an exemplary embodiment of the present invention includes a first bracket 31, a second bracket 32, a first detection part 11, a second detection part 12, a plurality of mobile modules 20 and a seat 40 arranged between the first bracket 31 and the second bracket 32; the first bracket 31 has a first guide rail 311, the second bracket 32 ​​has a second guide rail 321, the first detection part 11 is slidably arranged on the first guide rail 311 through the corresponding mobile module 20, and the second detection part 12 is slidably arranged on the second guide rail 321 through the corresponding mobile module 20; the mobile module 20 includes a base 21 and a slide 22 slidably arranged on the base 21, and the base 21 of the mobile module 20 is slidably arranged on the first guide rail 311 or the second guide rail 321; wherein the first guide rail 311 and the second guide rail 321 both extend along the first direction, and each slide 22 slides along the second direction, and the first direction is perpendicular to the second direction.

[0053] Specifically, the first detection unit 11 is arranged on the slide 22 of the corresponding mobile module 20, and is used to measure the force at the chin when the cranial neck is flexed; the second detection unit 12 is arranged on the slide 22 of the corresponding mobile module 20, and is used to measure the force at the back of the head when the cervical chest is extended or the cranial neck is extended.

[0054] The first bracket 31 and the second bracket 32 ​​are both gantry structures, and are arranged relative to each other at a certain distance. The subject can sit on the seat 40 between the two to perform the head and neck force test. Two relative guide rails are respectively arranged in the middle part of the first bracket 31 and the second bracket 32, wherein two first guide rails 311 are arranged on the first bracket 31, and the extension direction is the vertical direction; two second guide rails 321 are arranged on the second bracket 32, and the extension direction is also the vertical direction; the first detection part 11 and the second detection part 12 are respectively slidably arranged on the first guide rail 311 and the second guide rail 321 through the corresponding moving module 20.

[0055] Exemplarily, the moving module 20 includes a base 21 and a slide 22 slidably disposed on the base 21 , and the sliding direction of the slide 22 on the base 21 is a second direction, and the second direction is a horizontal direction.

[0056] When the base 21 is slidably disposed on the first guide rail 311 or the second guide rail 321, the first detection part 11 and the second detection part 12 can be slid and locked in the vertical direction and the horizontal direction, so that each detection part can be adjusted to the part of the subject that needs to be tested.

[0057] In some embodiments, the experimental device also includes a third detection unit 13, which is slidably disposed on the first guide rail 311 through the corresponding moving module 20; the third detection unit 13 is disposed on the slide 22 of the corresponding moving module 20, and is used to measure the force at the forehead when the cervical thoracic flexion occurs.

[0058] The third detection part 13 is roughly the same shape as the second detection part 12, except that the third detection part 13 can be attached to the forehead, while the second detection part 12 can be attached to the back of the head. The third detection part 13 and the first detection part 11 are both arranged on the first guide rail 311, that is, there are two moving modules 20 on the first guide rail 311, wherein the moving module 20 of the third detection part 13 is located above the moving module 20 of the first detection part 11, and the positions of the two in the vertical direction can be adjusted independently. That is, the third detection part 13 can also slide and lock along the vertical direction and the horizontal direction.

[0059] In some embodiments, the experimental device further includes a support portion 14, which is slidably disposed on the second guide rail 321 through a corresponding moving module 20; the support portion 14 is disposed on a slide 22 of the corresponding moving module 20, and is used to limit the back of the brain when the skull and neck are extended.

[0060] The support portion 14 and the second detection portion 12 may have the same shape, and both are disposed on the second guide rail 321, that is, there are two moving modules 20 on the second guide rail 321, wherein the moving module 20 of the second detection portion 12 is located above the moving module 20 of the support portion 14, and the positions of the two in the vertical direction can be adjusted independently. That is, the support portion 14 can also slide and lock along the vertical direction and the horizontal direction.

[0061] The shapes of the support portion 14 and the second detection portion 12 may also be different. The support portion 14 may not use a sensor and only play a supporting role, while the second detection portion 12 needs to be provided with a second sensor to measure force.

[0062] As can be seen from the above, the experimental device of the exemplary embodiment of the present invention can realize the two-stage cervical muscle force measurement through the relative arrangement of the first bracket 31 and the second bracket 32, and the independent movement of the first detection part 11, the second detection part 12, the third detection part 13 and the support part 14 in the horizontal and vertical directions. The bracket and the detection part are connected by a guide rail type sliding connection. Compared with the structure in the prior art that sets the detection part on a cantilever, due to its own lack of rigidity, it is difficult to avoid the influence of lateral force and large deformation in the main force direction on the experimental results. The various detection parts and the support part 14 in the present invention do not adopt a cantilever structure, thereby avoiding the problem of poor accuracy of the experimental results caused by large deformation in the force direction.

[0063] Continue as Figure 1 and Figure 2As shown, in the cervical muscle force experimental device of the exemplary embodiment of the present invention, two third guide rails 322 are arranged on both sides of the bottom of the second bracket 32 ​​and the bottom position of the seat 40, and sliders slidably arranged on the third guide rails 322 are arranged on both sides of the bottom end of the first bracket 31, and a Forma wheel is arranged at the bottom of the first bracket 31, so that the distance between the first bracket 31 and the second bracket 32 ​​can be infinitely adjusted and can be effectively locked by bolts. Therefore, the first bracket 31 and the second bracket 32 ​​with adjustable spacing can adapt to the body sizes of different subjects and the positions of different measuring points, which is convenient for the range of isometric contraction of the cranial neck, cervical chest and cervical muscles; at the same time, it is convenient for the subjects to enter / leave the seat 40 workstation. Exemplarily, a plurality of Forma wheels are also arranged at the bottom of the second bracket 32, so that the entire experimental device can be moved conveniently and quickly.

[0064] Figure 3 is a schematic diagram of the isometric structure of a first detection unit according to an embodiment of the present invention; Figure 4 Schematic diagram of the isometric structure of the third detection unit according to an embodiment of the present invention. Figure 3 and Figure 4 As shown, the mobile module 20 of the first detection part 11, the second detection part 12, the third detection part 13 and the support part 14 includes a base 21 and a slide 22, wherein sliding structures are respectively arranged on both sides of the base 21, and the sliding structure includes a row of slider groups arranged along the first direction, and grooves matching the row of slider groups are arranged on the first guide rail 311 and the second guide rail 321, and in the two sliding structures on the same base 21, a stabilizing wheel is also arranged on the outer side of each sliding structure to maintain the stability of the sliding structure on the guide rail.

[0065] Exemplarily, the stabilizing wheels in the two sliding structures on the same base 21 are not on the same horizontal plane, but one is located near the top end of the sliding structure, and the other is located near the bottom end of the sliding structure.

[0066] In some embodiments, a dovetail-shaped tenon 221 is provided at the top or bottom of the base 21, and a dovetail-shaped slide groove 25 is provided on the slide 22 of the mobile module, and the tenon 221 is slidably provided in the slide groove 25. It can be understood that the extension direction of the slide groove 25 is the second direction. The dovetail-shaped tenon 221 and the slide groove 25 structure enable the slide 22 to smoothly and stably connect the slide 22 and the base 21 together, and the slide 22 is relatively stable whether it is provided at the top or bottom of the base 21.

[0067] In some embodiments, one end of the locking bolt 23 of the mobile module 20 passes through the slide 22 and abuts against the tenon 221 , and the locking bolt 23 is screwed against the tenon 221 through a screw hole provided on the slide 22 to complete the positioning.

[0068] In another optional embodiment, a long hole 24 is further opened on the bottom wall of the slide groove 25 on the slide 22, and the locking bolt 23 is arranged in the screw hole of the tenon 221 and has a nut. When the slide 22 is moved to a suitable position, the locking bolt 23 is tightened and the nut is stopped on the surface of the slide 22 to achieve the locking positioning between the two.

[0069] The above-mentioned method of manually moving and locking by mechanical structure, rather than electric adjustment, can avoid life-threatening problems caused by drive failure for the fragile head of the subject, thereby improving the reliability of the experimental device, and is also suitable for different subject sizes.

[0070] Continue as Figure 3 and Figure 4 As shown, the force-bearing surface of the first bracket 111 of each detection part and the second bracket of the support part 14, that is, the surface that fits the head, are arc-shaped surfaces that are recessed in the middle and raised on both sides. On the one hand, the arc-shaped surfaces can improve the comfort of contact with the head, and on the other hand, can ensure that the subject is in a centered position during the experiment (the sagittal plane and the mid-plane of the experimental platform coincide), thereby ensuring the accuracy of the data test.

[0071] like Figure 3 As shown, the first detection unit 11 includes a first bracket 111 and a first sensor 112. The first bracket 111 is arranged on the slide 22 of the corresponding mobile module 20 through the first sensor 112. The force-bearing surface of the first bracket 111 of the first detection unit 11 faces upward, and it can collect the vertical force at the chin.

[0072] like Figure 4 As shown, the third detection unit 13 includes a first bracket 111 and a third sensor 132. The first bracket 111 is arranged on the slide 22 of the corresponding mobile module 20 through the third sensor 132. The force-bearing surface of the first bracket 111 of the third detection unit 13 faces the second bracket 32, which can collect horizontal force at the chin and forehead.

[0073] The second detection part 12 is substantially the same as the third detection part 13. The second detection part 12 includes a first bracket 111 and a second sensor. The first bracket 111 is disposed on the slide 22 of the corresponding mobile module 20 through the second sensor. The force-bearing surface of the first bracket 111 of the second detection part 12 faces the first bracket 31, and it can collect horizontal force at the skull and occipital bone.

[0074] The support portion 14 may be completely consistent with the second detection portion 12 , or only a second bracket may be provided without a sensor, that is, the second bracket is directly provided on the slide 22 of the corresponding mobile module 20 , with its force-bearing surface facing the first bracket 31 .

[0075] In some embodiments, the first detection unit 11 further includes a strap (headband), two ends of which are respectively connected to two ends of a first bracket 111 of the first detection unit 11, which can measure the force during craniocervical extension CCE.

[0076] In some embodiments, the experimental device further includes an electromyographic measurement unit and a controller, and the first sensor of the first detection part 11, the second sensor of the second detection part 12, the third sensor of the third detection part 13 and the electromyographic measurement unit are respectively connected to the controller for communication.

[0077] Through multiple electromyographic measurement units, the force of muscle groups such as the splenius capitis, semispinalis capitis, sternocleidomastoid, middle trapezius, and pectoralis major can be collected, so as to determine whether the force of the subjects in the two-stage measurement is correct, and then obtain accurate force data.

[0078] Exemplarily, the first detection portion 11 further includes a first sponge pad disposed at the end of the corresponding base 21 facing the second bracket 32 ​​, and the support portion 14 further includes a second sponge pad disposed at the end of the corresponding base 21 facing the first bracket 31 .

[0079] Exemplarily, both the first bracket 111 and the second bracket have elastic layers on their force-bearing surfaces.

[0080] The exemplary embodiment of the present invention further provides a cervical muscle force test method, which uses the experimental device of the above embodiment to measure the cervical muscle force, and the test method includes:

[0081] Move the first bracket 31 in a direction away from the second bracket 32;

[0082] The subject sits on the seat 40 and moves the first bracket 31 to a suitable position in a direction close to the second bracket 32;

[0083] Fitting the electromyographic measurement unit to the corresponding muscle part of the subject and forming an electrical connection with the controller;

[0084] According to actual needs, such as two-stage measurement of craniocervical flexion CCF, craniocervical extension CCE, cervicothoracic flexion CTF, cervicothoracic extension CTE and other tests, adjust the first detection part 11, the second detection part 12, the third detection part 13 and the support part 14 to the corresponding positions of the subject and fit them to the corresponding positions of the head;

[0085] The subject exerts force, and the force signal of the sensor and the electromyographic signal of the electromyographic measurement unit are collected synchronously. The collected force includes the maximum force and the continuous force value.

[0086] Example 1 (Cranio-cervical flexion CCF)

[0087] Adjust the position of the first detection part 11, move the first bracket 111 of the first detection part 11 to the chin position, and the first sponge pad of the first detection part 11 abuts against the shoulder and chest position of the subject;

[0088] The position of the support part 14 is adjusted, and the second sponge pad on the support part 14 is pressed tightly against the back of the subject; the second detection part 12 and the third detection part 13 are away from the head of the subject;

[0089] The subject's cranial cervical flexion exerts force, and the force direction of the first bracket 111 of the first detection part 11 is vertically downward;

[0090] Collect the electromyographic signal and the force signal of the first detection unit 11.

[0091] Comparative Example 1

[0092] The position of the first detection part 11 is adjusted, the first bracket 111 of the first detection part 11 is moved to the chin position, and the first sponge pad is not provided; the second detection part 12, the third detection part 13 and the support part 14 are away from the subject's head.

[0093] The subject's cranial cervical flexion exerts force, and the force direction of the first bracket 111 of the first detection part 11 is vertically downward;

[0094] Collect the electromyographic signal and the force signal of the first detection unit 11.

[0095] Example 2 (Cranio-cervical extension CCE)

[0096] Adjust the position of the third detection part 13 and move the first bracket 111 of the third detection part 13 to the chin position;

[0097] The position of the first detection part 11 is adjusted so that the first sponge pad of the first detection part 11 abuts against the shoulder and chest position of the subject;

[0098] Adjust the position of the support part 14 and press the second sponge pad on the support part 14 tightly against the back of the subject;

[0099] Adjust the position of the second detection unit 12, move the first bracket 111 of the second detection unit 12 to the occipital position and fit it on the occipital;

[0100] The subject extends his skull and neck backwards and exerts force, and the force direction of the first bracket 111 of the third detection unit 13 is horizontally toward the first bracket 31;

[0101] The electromyographic signal and the force signal of the third sensor of the third detection unit 13 are collected.

[0102] Comparative Example 2

[0103] Adjust the position of the third detection part 13, move the first bracket 111 of the third detection part 13 to the chin position, and do not use the first detection part 11 and the support part 14;

[0104] Adjust the position of the second detection unit 12, move the first bracket 111 of the second detection unit 12 to the occipital position and fit it on the occipital;

[0105] The subject extends his skull and neck backwards and exerts force, and the force direction of the first bracket 111 of the third detection unit 13 is horizontally toward the first bracket 31;

[0106] The electromyographic signal and the force signal of the third sensor of the third detection unit 13 are collected.

[0107] Comparative Example 3

[0108] Adjust the position of the first detection unit 11, move the first bracket 111 of the first detection unit 11 to the chin position, and tie the headband 113 to the top of the head and the front of the two ears;

[0109] The second detection part 12, the third detection part 13 and the support part 14 are not used;

[0110] The subject extends his skull and neck backwards and exerts force, and the force direction of the first bracket 111 of the first detection part 11 is obliquely upward and toward the second bracket 32;

[0111] The electromyographic signal and the force signal of the first sensor of the first detection unit 11 are collected.

[0112] Example 3 (cervicothoracic flexion CTF)

[0113] Adjust the position of the third detection part 13, move the first bracket 111 of the third detection part 13 to the forehead position and fit it;

[0114] The position of the first detection part 11 is adjusted so that the first sponge pad of the first detection part 11 abuts against the shoulder and chest position of the subject;

[0115] Adjust the position of the support part 14 and press the second sponge pad on the support part 14 tightly against the back of the subject;

[0116] Adjusting the position of the second detection unit 12 away from the subject's head;

[0117] The subject flexes the cervical thorax to exert force, and the force direction of the first bracket 111 of the third detection part 13 is horizontally toward the first bracket 31;

[0118] The electromyographic signal and the force signal of the third sensor of the third detection unit 13 are collected.

[0119] Comparative Example 4

[0120] Adjust the position of the third detection part 13, move the first bracket 111 of the third detection part 13 to the forehead position and fit it;

[0121] Adjusting the positions of the first detection part 11, the second detection part 12 and the support part 14 away from the subject's head;

[0122] The subject flexes the cervical thorax to exert force, and the force direction of the first bracket 111 of the third detection part 13 is horizontally toward the first bracket 31;

[0123] The electromyographic signal and the force signal of the third sensor of the third detection unit 13 are collected.

[0124] Example 4 (cervical thoracic extension CTE)

[0125] Adjust the position of the second detection part 12, move the first bracket 111 of the second detection part 12 to the occipital position and fit it;

[0126] The position of the first detection part 11 is adjusted so that the first sponge pad of the first detection part 11 abuts against the shoulder and chest position of the subject;

[0127] Adjust the position of the support part 14 and press the second sponge pad on the support part 14 tightly against the back of the subject;

[0128] Adjusting the position of the third detection unit 13 away from the subject's head;

[0129] The subject extends his neck and chest backwards and exerts force, and the force direction of the first bracket 111 of the second detection part 12 is horizontally toward the second bracket 32;

[0130] The electromyographic signal and the force signal of the second sensor of the second detection unit 12 are collected.

[0131] Comparative Example 5

[0132] Adjust the position of the second detection part 12, move the first bracket 111 of the second detection part 12 to the occipital position and fit it;

[0133] Adjust the positions of the first detection part 11, the third detection part 13 and the support part 14 away from the subject's head;

[0134] The subject extends his neck and chest backwards and exerts force, and the force direction of the first bracket 111 of the second detection part 12 is horizontally toward the second bracket 32;

[0135] The electromyographic signal and the force signal of the second sensor of the second detection unit 12 are collected.

[0136] Fig. 6A is an electromyogram during craniocervical flexion (with restraint) according to an embodiment of the present invention; Figure 6B is the electromyogram of the craniocervical flexion (without constraint) according to an embodiment of the present invention. Fig. 6A and Figure 6B It can be seen that in Example 1, when the experimental device is constrained by the first detection part 11, the first sponge pad and the second sponge pad of the support part 14, the subject's sternocleidomastoid muscle exerts force, while the other muscles do not, that is, the force is correct, and the measured data is accurate; while in Comparative Example 1, when the experimental device is only composed of the first detection part 11 without other constraints, the subject's electromyographic signal shows that while the sternocleidomastoid muscle exerts force, the middle trapezius muscle, pectoralis major muscle, etc. compensate for it, that is, the force is incorrect, and the measured force signal is inaccurate.

[0137] Fig. 7A is an electromyogram during craniocervical extension (with restraint) according to an embodiment of the present invention; Figure 7B is the electromyogram (EMG) of the cranial neck extension (without constraint) according to an embodiment of the present invention. Fig. 7A and Figure 7B It can be seen that in Example 2, under the constraints of the first sponge pad of the first detection part 11, the second detection part 12, the third detection part 13 and the second sponge pad of the support part 14, the subject's splenius capitis and semispinalis capitis muscles exert force, while other muscles do not exert force, that is, the force is correctly exerted, and the measured data is accurate; while in Comparative Example 2, when the experimental device is only composed of the second detection part 12 and the third detection part 13 without other constraints, the subject's electromyographic signal shows that the splenius capitis and semispinalis capitis muscles exert force, and the middle trapezius muscle compensates for the force, that is, the force is incorrect, and the measured force signal is inaccurate.

[0138] Figure 7C : is an electromyogram (headband type) of the cranial neck extension according to an embodiment of the present invention. Figure 7C As shown, in comparative example 3, the subject's electromyographic signal shows that the splenius capitis and semispinalis capitis exert force, and other muscles compensate for the force, accompanied by uncertain shaking (due to slippage, etc.). It can be seen that when the headband 113 is used to limit the position, it is deformed by force, deviates from the limit position, and the force-generating method changes, resulting in incorrect movements; the soft headgear deforms when transmitting tension, and is easy to slip and fall off, causing the force measurement direction to change; in addition, the shape and size of the subject's head also have a great influence on the force measurement direction. For example, different angles, different sensor measurement components, and different pulling directions of the subject will also lead to incorrect force movements.

[0139] Fig. 8A is the electromyogram during cervicothoracic flexion (with constraint) according to an embodiment of the present invention; Figure 8B is the electromyogram during cervical thoracic flexion (without constraint) according to an embodiment of the present invention; Fig. 8A and Figure 8BAs shown, in Example 3, in the constrained cervical thoracic flexion force, the sternocleidomastoid muscle exerts force, and the others do not exert force, that is, the force is correct, and the measured data is accurate; while in Comparative Example 4, in the unconstrained cervical thoracic flexion force, the sternocleidomastoid muscle exerts force, and the rectus abdominis, middle trapezius muscles and other compensatory forces exert force, that is, the force is incorrect, and the measured force signal is inaccurate.

[0140] Fig.9A is an electromyogram during cervical and thoracic extension (with constraints) according to an embodiment of the present invention; Fig. 9B is the electromyogram (EMG) of the cervical thoracic extension (without constraint) according to an embodiment of the present invention. Fig.9A and Fig. 9B As shown, in Example 4, during the constrained cervical and thoracic extension, the splenius capitis and semispinalis capitis muscles exert force, while other muscles do not exert force, that is, the force is exerted correctly, and the measured data is accurate; while in Comparative Example 5, during the unconstrained cervical and thoracic extension, the splenius capitis and semispinalis capitis muscles exert force, while the middle trapezius and pectoralis major muscles compensate for the force, that is, the force is not exerted correctly, and the measured force signal is inaccurate.

[0141] It can be seen that the cervical muscle force experimental device of the exemplary embodiment of the present invention can complete the two-stage force test of the craniocervical segment and the cervical thoracic segment through the coordinated cooperation of various detection parts and support parts, specifically the precise test of craniocervical flexion CCF, craniocervical extension CCE, cervical thoracic flexion CTF, cervical thoracic extension CTE, etc., thereby improving the reliability and flexibility of the experiment.

[0142] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A cervical muscle force test device, characterized in that: It includes a first bracket, a second bracket, a first detection unit, a second detection unit, a plurality of mobile modules, and a seat arranged between the first bracket and the second bracket; The first bracket has a first guide rail, the second bracket has a second guide rail, the first detection part is slidably arranged on the first guide rail through the corresponding moving module, and the second detection part is slidably arranged on the second guide rail through the corresponding moving module; The moving module comprises a base and a slide slidably arranged on the base, and the base of the moving module is slidably arranged on the first guide rail or the second guide rail.

2. The experimental device according to claim 1, characterized in that: The first guide rail and the second guide rail both extend along a first direction, and each of the slides slides along a second direction, and the first direction is perpendicular to the second direction.

3. The experimental device according to claim 2, characterized in that: The experimental device also includes a support portion.

4. The experimental device according to claim 3, characterized in that: The first detection part and the second detection part both include a first bracket and a sensor, and the first bracket is arranged on the slide table of the corresponding moving module through the sensor.

5. The experimental device according to claim 4, characterized in that: The force-bearing surface of the first bracket of the first detection portion faces upward.

6. The experimental device according to claim 4, characterized in that: The force-bearing surface of the first bracket of the second detection portion faces the first support.

7. The experimental device according to claim 5 or 6, characterized in that: An elastic layer is provided on the force-bearing surface of the first bracket.

8. The experimental device according to claim 4, characterized in that: The supporting part comprises a second bracket, and the second bracket is arranged on the slide platform corresponding to the moving module, and the force-bearing surface of the second bracket faces the first bracket.

9. The experimental device according to claim 8, characterized in that: The experimental device further includes an electromyographic measurement unit and a controller. The sensor of the first detection unit, the sensor of the second detection unit, and the electromyographic measurement unit are respectively connected to the controller for communication.

10. A method for testing the force of cervical muscles, characterized in that: The experimental device according to any one of claims 1 to 9 is used to measure the force of the cervical muscles.

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