A ruler for measuring spinal mobility

Abstract

A kind of special ruler for measuring spinal mobility, including protractor, flexible ruler and fixed support, one end of the flexible ruler is fixed on 0 scale at the bottom of protractor, the scale surface of the protractor is engraved with symmetrical two-way scale, the fixed support is provided with first cross bar and second cross bar, the first cross bar is vertically fixed on fixed support (3), the second cross bar is fixed on fixed support, and is respectively perpendicular to fixed support and first cross bar.The utility model discloses that flexible ruler, protractor and fixed support are flexibly combined, the spinal mobility of patient's forward bending, back extension, left and right lateral bending, left and right rotation can be measured, the spinal mobility data of patient is obtained, and the structure is simple, portable, low in cost, low in use threshold, patient can measure spinal mobility at home by oneself, need not to measure in special medical institution, time is greatly saved.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a special ruler for measuring spinal mobility. Background Technology

[0002] Spinal mobility is a preliminary examination of the spine's movement, used for the prevention and timely treatment of spinal diseases. Spinal mobility includes six physiological activities: flexion, extension, lateral bending (left and right), and axial rotation (left and right).

[0003] Most current spinal mobility measurement tools are quite complex. For example, a spinal mobility measuring device, patent number CN117064367A, includes a scale plate, an adjustment base, a clamping device, an indicator, and a marker rod. The method of use is as follows: when measuring forward flexion, the clamping device is used to clamp the patient's sides. After bending forward, the distance between two marker points is measured through a flexible plate with scales. When measuring left and right lateral flexion and axial rotation, the patient's left / right movement causes the indicator rod to move, and the rotational position of the indicator rod is observed to obtain the patient's left and right lateral flexion mobility values. However, such measuring tools are large, complex in structure, expensive, and cumbersome to operate, presenting a certain barrier to entry and making them unsuitable for patients to perform self-testing at home.

[0004] Therefore, existing technologies still need improvement. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a special ruler for measuring spinal mobility, which has the advantages of simple operation, accurate measurement and low cost, so as to overcome the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A special ruler for measuring spinal mobility includes a protractor, a flexible measuring tape, and a fixed support. One end of the flexible measuring tape is fixed to the 0 mark on the bottom of the protractor. The protractor has symmetrical bidirectional graduations engraved on its surface. The fixed support has a first crossbar and a second crossbar. The first crossbar is vertically fixed to the fixed support, and the second crossbar is fixed to the fixed support and is perpendicular to both the fixed support and the first crossbar.

[0008] Furthermore, it also includes an angle auxiliary ruler, which has symmetrical bidirectional scales engraved on it. The bottom of the angle auxiliary ruler has a semi-circular opening that fits into the arc surface of the protractor, and the scale on the angle auxiliary ruler is on the extension line of the scale of the protractor.

[0009] Furthermore, the lower end of the fixing bracket is pointed.

[0010] Furthermore, the fixed bracket has an extension rod at its lower part, the lower end of which is pointed. A telescopic structure is provided between the extension rod and the fixed bracket. One end of the telescopic structure is fixedly connected to the extension rod. The extension rod, together with the telescopic structure, is inserted into the fixed bracket and moves axially to achieve telescopic movement.

[0011] Furthermore, the telescopic structure includes a limiting block, the lower end of which is fixedly connected to the extension rod. The left and right ends of the limiting block are provided with a first limiting groove and a second limiting groove. The bottom of the first limiting groove and the second limiting groove are respectively provided with a first limiting post and a second limiting post. A first spring and a second spring are respectively sleeved on the first limiting post and the second limiting post. The top ends of the first spring and the second spring are fixed with a first limiting member and a second limiting member. The lower part of the fixed bracket is provided with multiple sets of first limiting holes and multiple sets of second limiting holes corresponding to the first limiting member and the second limiting member. The first limiting member and the second limiting member cooperate with the first limiting hole and the second limiting hole to restrict the relative movement and relative rotation of the extension rod along the axial direction inside the fixed bracket.

[0012] The above technical solution has the following beneficial effects:

[0013] This invention comprises a protractor, a flexible measuring tape, and a fixed support for measuring trunk mobility. One end of the flexible measuring tape is fixed to the protractor, which is parallel to the patient. The tape swings simultaneously with the patient's flexion or extension. The angle of the tape's swing on the protractor clearly indicates the patient's spinal mobility and the length of the spinal movement at the start and end of the movement. Measuring the patient's left and right rotational mobility requires only the fixed support. The intersection of the first and second horizontal bars of the support is positioned on the line connecting the two acromions. The support is placed against the patient's acromion, with its bottom perpendicular to the 0-mark of the protractor. As the patient rotates left and right, the support is moved by the acromion. Observing the angle of change in the support provides the patient's spinal mobility data. This invention is simple in structure, portable, inexpensive, and easy to use. Patients can measure their spinal mobility at home without needing to visit a specialized medical institution, significantly saving time. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 This is a schematic diagram of a special ruler for measuring spinal mobility according to the present invention;

[0017] Figure 2 This is a schematic diagram of the structure after the protractor and the flexible measuring tape are combined.

[0018] Figure 3 This is a schematic diagram of the fixed support structure;

[0019] Figure 4 A schematic diagram of the structure of an angle auxiliary ruler;

[0020] Figure 5 A schematic diagram of the structure after the angle auxiliary ruler and the protractor are combined;

[0021] Figure 6 This is a schematic diagram of the fixed bracket in Embodiment 2;

[0022] Figure 7 for Figure 6 Half-section view at point A in the middle;

[0023] Figure 8 This is a schematic diagram of a telescopic structure;

[0024] Figure 9 This is a schematic diagram of a special ruler for measuring spinal mobility during flexion and extension.

[0025] Figure 10 This is a schematic diagram of a special ruler for measuring spinal mobility when measuring left and right lateral flexion.

[0026] Figure 11 This is a schematic diagram of a special ruler for measuring spinal mobility when measuring left and right rotation.

[0027] In the diagram: 1. Protractor; 2. Soft ruler; 3. Fixed bracket; 4. First horizontal bar; 5. Second horizontal bar; 6. Angle auxiliary ruler; 7. Extension rod; 8. Limiting hole; 81. First limiting groove; 82. Second limiting groove; 83. First limiting post; 84. Second limiting post; 85. First spring; 86. Second spring; 87. First limiting component; 88. Second limiting component; 89. First limiting hole; 90. Second limiting hole. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] See Figures 1-11 As shown, this utility model discloses a special ruler for measuring spinal mobility.

[0030] Please see Figures 1-3 It includes a protractor 1, a flexible ruler 2, and a fixed bracket 3. One end of the flexible ruler 2 is fixed to the 0 mark at the bottom of the protractor 1. The protractor 1 has symmetrical bidirectional markings engraved on its surface. The fixed bracket 3 is provided with a first horizontal bar 4 and a second horizontal bar 5. The first horizontal bar 4 is vertically fixed to the fixed bracket 3, and the second horizontal bar 5 is fixed to the fixed bracket 3 and is perpendicular to the fixed bracket 3 and the first horizontal bar 4, respectively.

[0031] See Figure 9 Specifically, when measuring a patient's flexion and extension, the patient stands with their hands clasped across their chest. The user holds a protractor 1 to one side of the patient, aligning the 0 mark at the bottom of the protractor 1 with the spinous process of the fifth lumbar vertebra. A flexible measuring tape 2 is stretched to the seventh cervical vertebra. As the patient begins to flex and extend, the user swings the measuring tape 2 accordingly, observing the angle at which the patient bends. The angle of the measuring tape's swing indicates the patient's maximum range of motion. Additionally, to better understand whether the patient has a straight back and bent posture, the measuring tape 2 can be used to measure and compare the length of the spine from the seventh cervical vertebra to the fifth lumbar vertebra after standing and bending forward.

[0032] See Figure 10 When measuring a patient's lateral flexion, the patient should be seated or standing with their arms crossed over their chest. The user holds a protractor 1 behind the patient, aligning the 0 mark at the bottom of the protractor 1 with the first sacral vertebra. A flexible measuring tape 2 is stretched to the seventh cervical vertebra. The user swings the measuring tape 2 accordingly as the patient begins to lateral flexion, observing the angles of lateral flexion and the corresponding swing angles of the tape 2. This provides the maximum range of motion of the patient's trunk. Simultaneously, the measuring tape 2 can be used to measure and compare the length of the spine from the seventh cervical vertebra to the fifth sacral vertebra after standing and lateral flexion, thus assessing the patient's condition.

[0033] See Figure 11When measuring the patient's left and right rotation, the patient should be seated or standing with their hands clasped across their chest. The user should hold a protractor 1 on one side of the patient, aligning the 0 mark at the bottom of the protractor 1 with the patient's fifth lumbar vertebra. The intersection of the first horizontal bar 4 and the second horizontal bar 5 in the fixation bracket should be on the line connecting the two acromions. The fixation bracket 3 should be placed against the patient's acromion, with the bottom of the fixation bracket 3 pointing to the 0 mark on the protractor 1. When the patient's torso rotates left and right, the fixation bracket 3 is moved by the patient's acromion. By observing the angle of change of the fixation bracket 3 on the protractor 1, the patient's spinal mobility data can be obtained.

[0034] See Figure 4 , 5 The special ruler for measuring spinal mobility also includes an angle auxiliary ruler 6. The angle auxiliary ruler 6 has symmetrical bidirectional graduations and a semi-circular opening at its bottom. This opening aligns with the curved surface of the protractor 1, and the graduations on the angle auxiliary ruler 6 are extended from the graduations on the protractor 1. The angle auxiliary ruler 6 extends the graduations on the protractor 1, bringing them closer to the flexible ruler 2, allowing for more accurate observation and assessment of the patient's bending angle. Simultaneously, the angle auxiliary ruler 6 has an opening that the user can align with the patient's lateral abdomen, placing the patient's lateral abdomen within the arc-shaped opening. With the fixing bracket 3 perpendicular to the extended line of the angle auxiliary ruler's graduation 0, more accurate spinal mobility data can be obtained when the patient's torso rotates left and right.

[0035] The lower end of the fixed bracket 3 is pointed, which allows the fixed bracket 3 to be placed better on the angle auxiliary ruler 6, and the fixed bracket 3 is not easy to shake during measurement.

[0036] The fixed bracket 3 is provided with an extension rod 7 at its lower part. A telescopic structure is provided between the extension rod 7 and the fixed bracket 3. One end of the telescopic structure is fixedly connected to the extension rod 7. The extension rod 7, together with the telescopic structure, is inserted into the fixed bracket 3 and moves along the axial direction to achieve telescopic movement, so that the length of the fixed bracket 3 can be changed. This makes the fixed bracket 3 suitable for measuring patients of different ages and improves the applicability of the range of motion measuring ruler.

[0037] See Figures 6-8The telescopic structure includes a limiting block 8, the lower end of which is fixedly connected to the extension rod 7. The left and right ends of the limiting block 8 are provided with a first limiting groove 81 and a second limiting groove 82. The bottom of the first limiting groove 81 and the second limiting groove 82 are respectively provided with a first limiting post 83 and a second limiting post 84. A first spring 85 and a second spring 86 are respectively sleeved on the first limiting post 83 and the second limiting post 84. The top ends of the first spring 85 and the second spring 86 are fixed with a first limiting member 87 and a second limiting member 88. The lower part of the fixed bracket 3 is provided with multiple sets of first limiting holes 89 and multiple sets of second limiting holes 90 corresponding to the first limiting members 87 and the second limiting members 88. The first limiting members 87 and the second limiting members 88 cooperate with the first limiting holes 89 and the second limiting holes 90 to restrict the relative movement and relative rotation of the extension rod 7 along the axial direction inside the fixed bracket 3.

[0038] Specifically, when the user needs to adjust the length of the fixed bracket 3, they can press the first limiting member 87 and the second limiting member 88 simultaneously with their hand, causing the first limiting member 87 and the second limiting member 88 to move downward under pressure, compressing the elongation of the first spring 85 and the second spring 86. When the first spring 85 and the second spring 86 are compressed to a certain extent, the snap-fit ​​connection between the first limiting member 87 and the second limiting member 88 and the first limiting hole 89 and the second limiting hole 90 is broken, and the first limiting member 87 and the second limiting member 88 no longer restrict the extension rod 7 to move axially in the fixed bracket. At this time, the user can stretch or insert the extension rod 7 with their hand to change the length of the fixed bracket 3. After the fixed bracket 3 is adjusted to the appropriate length, the first limiting member 87 and the second limiting member 88 are respectively fastened to the first limiting hole 89 and the second limiting hole 90 of another set. The compressed first spring 85 and the second spring 86 rebound, so that the first limiting member 87 and the second limiting member 88 form a snap connection with the first limiting hole 89 and the second limiting hole 90 of another set, thus locking the extension rod.

[0039] This invention can also be applied to the measurement of cervical spine mobility in patients.

[0040] Flexion and extension: The patient is seated or standing. The user selects a protractor 1 on one side of the patient and aligns the 0 mark of the protractor 1 with the patient's acromion. The soft ruler 2 swings with the patient's head as they tilt their head up or down. The angle of the swing of the soft ruler 2 is observed and recorded to obtain the patient's cervical spine mobility in flexion and extension.

[0041] Left and right lateral flexion:

[0042] Method 1: The patient is seated or standing. The user selects a protractor 1 behind the patient, aligning the 0 mark of the protractor 1 with the spinous process of the 7th cervical vertebra. The soft ruler 2 is straightened and placed against the patient's head. The user observes and records the angle of the soft ruler 2 swinging as the patient's head flexes to the left and right. This can obtain the range of motion of the cervical spine when the patient flexes to the left and right.

[0043] Method 2: With the patient in a supine position, the user places an angle auxiliary ruler 6 parallel to the patient's acromions on both sides, and positions the patient's head within the arc of the angle auxiliary ruler 6. The 0 mark of the angle auxiliary ruler 6 is placed on the vertical line of the tip of the nose in the patient's head. The patient laterally flexes their head to the left and right, and the angle formed by the tip of the nose and the vertical line is observed and recorded. This can be used to obtain the cervical spine mobility of the patient's left and right lateral flexion.

[0044] Left and right rotation: The patient is in a sitting, standing or supine position. The user places an angle auxiliary ruler 6 parallel to the patient's acromion on both sides and places the patient's neck within the arc of the angle auxiliary ruler 6. Observe and record the angle formed by the vertical line of the tip of the nose and the 0 mark in the angle auxiliary ruler 6 when the patient's head rotates left and right. This can obtain the patient's cervical spine mobility when rotating left and right.

[0045] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A special ruler for measuring spinal mobility, characterized in that: It includes a protractor (1), a flexible ruler (2), and a fixed bracket (3). One end of the flexible ruler (2) is fixed to the 0 mark at the bottom of the protractor (1). The protractor (1) has symmetrical bidirectional markings. The fixed bracket (3) is provided with a first crossbar (4) and a second crossbar (5). The first crossbar (4) is vertically fixed on the fixed bracket (3), and the second crossbar (5) is fixed on the fixed bracket and is perpendicular to the fixed bracket (3) and the first crossbar (4), respectively.

2. The special ruler for measuring spinal mobility according to claim 1, characterized in that: It also includes an angle auxiliary ruler (6), which has symmetrical bidirectional scales. The bottom of the angle auxiliary ruler (6) has a semi-circular opening that fits the arc surface of the protractor (1), and the scale on the angle auxiliary ruler (6) is on the extension line of the scale on the protractor (1).

3. The special ruler for measuring spinal mobility according to claim 1, characterized in that: The lower end of the fixed bracket (3) is pointed.

4. The special ruler for measuring spinal mobility according to claim 1, characterized in that: The fixed bracket (3) is provided with an extension rod (7) at the lower part. The lower end of the extension rod (7) is pointed. A telescopic structure is provided between the extension rod (7) and the fixed bracket (3). One end of the telescopic structure is fixedly connected to the extension rod (7). The extension rod (7) together with the telescopic structure is inserted into the fixed bracket (3) and moves along the axial direction to achieve telescopic movement.

5. The special ruler for measuring spinal mobility according to claim 4, characterized in that: The telescopic structure includes a limiting block (8), the lower end of which is fixedly connected to the extension rod (7). The limiting block (8) has a first limiting groove (81) and a second limiting groove (82) at its left and right ends. The bottom of the first limiting groove (81) and the second limiting groove (82) are respectively provided with a first limiting post (83) and a second limiting post (84). A first spring (85) and a second spring (86) are respectively sleeved on the first limiting post (83) and the second limiting post (84). 5) The top of the second spring (86) is fixed with a first limiting member (87) and a second limiting member (88). The lower part of the fixed bracket (3) is provided with multiple sets of first limiting holes (89) and multiple sets of second limiting holes (90) corresponding to the first limiting member (87) and the second limiting member (88). The first limiting member (87) and the second limiting member (88) cooperate with the first limiting hole (89) and the second limiting hole (90) to restrict the relative movement and relative rotation of the extension rod (7) in the axial direction inside the fixed bracket (3).

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