Continuous vertebra traction repositor

Abstract

The continuous vertebra traction repositor comprises a pair of tightening belts which are symmetrically arranged, the side faces of the pair of tightening belts are jointly provided with a pair of elastic plates, the bottom ends of the elastic plates are fixedly provided with a limiting plate, and the side face of the limiting plate is sequentially provided with a plurality of notches at equal intervals from left to right; and the lower half part of the whole limiting plate is divided into a multi-section structure by the plurality of notches. Through the arrangement of the elastic plate, the limiting plate, the first convex ball and the second convex ball, mutual coupling is conducted in the elastic potential energy direction generated after the elastic plate and the limiting plate are compressed through mutual matching of the elastic plate, the limiting plate, the first convex ball and the second convex ball; the splayed inclined direction is an auxiliary compound state acting force field, so that in the process of relaxing treatment of the vertebrae, the limiting plate in the splayed inclined form is used for limiting and correcting the poor posture deviating leftwards or rightwards, and the safety in the treatment process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of traction therapy, and more specifically, to a continuous vertebral traction and reduction device. Background Art

[0002] Lumbar traction is to use pulling force and counter-pulling force to act on the lumbar spine, and to achieve the purpose of treating lumbar disc herniation by pulling in opposite directions. Lumbar traction can increase the lumbar intervertebral space, mainly the L3, 4, 5, and S1 spaces. According to research, the lumbar intervertebral space is 1.5-2.5mm wider after traction than before traction. The widening of the intervertebral space can create negative pressure inside it, and the tension of the posterior longitudinal ligament is conducive to the reduction of the protruding nucleus pulposus or the change of its relationship with the nerve root. The increase of the intervertebral space and the stretching of the articular process joints can restore the intervertebral foramen. It can restore the normal shape, thereby relieving the compression of nerve roots. Traction can also make the lumbar spine get sufficient rest, reduce the stimulation of movement, and is conducive to the absorption and disappearance of tissue congestion and edema. It can also relieve muscle spasms and reduce intervertebral pressure. Traction therapy is a method of applying external force to a certain part of the body or joint to cause a certain separation and proper stretching of the surrounding soft tissue to achieve the purpose of treatment. Spinal traction therapy usually refers to the use of external force to pull the lumbar spine and pelvis to achieve the purpose of treatment, which is called lumbar traction.

[0003] However, there are still some shortcomings in its actual use. For example, the current traction and reduction device for lumbar vertebrae is in use. Because its force direction is consistent with the overall central axis direction of the lumbar spine, during the traction process, patients with lumbar spine distortion will involuntarily control their lumbar spine and back to twist or shift to the left or right, resulting in the lumbar spine being stretched in a twisted posture for a long time during the traction process. Although it can temporarily relieve the pain of lumbar disc herniation, long-term body distortion will further cause the patient's lumbar spine to twist and deform, which is likely to aggravate subsequent complications. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a continuous vertebral traction and reduction device, which provides an elastic plate, a limiting plate, a first convex ball and a second convex ball, and utilizes the mutual cooperation of the elastic plate and the limiting plate, and the directions of the elastic potential energy generated after the compression of the elastic plate and the limiting plate are superimposed and coupled with each other, and a composite force field is formed at the patient's waist position with the direction parallel to the lumbar vertebrae as the main direction and the S-shaped inclined direction as the auxiliary direction. Therefore, in the process of vertebral relaxation treatment, the limiting plate with the S-shaped inclined shape can be used to limit and correct the bad posture that is offset to the left or right, so as to achieve a better treatment effect, and effectively avoid the problem of the lumbar spine being pulled and stretched in a twisted posture for a long time during the traction treatment, which will further cause the patient's lumbar spine to twist and deform, thereby ensuring the safety during the treatment process, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a continuous vertebral traction and reduction device, comprising a pair of symmetrically arranged tightening belts, a rubber strip is fixedly attached to the bottom end of the tightening belts, the bottom end of the rubber strip is arranged in an arc shape, a pair of elastic plates are installed together on the side faces of the pair of tightening belts, a limiting plate is fixedly installed on the bottom end of the elastic plate, a plurality of notches are opened on the side faces of the limiting plate at equal intervals from left to right, a plurality of notches divide the entire lower half of the limiting plate into a multi-section structure, a first convex ball and a second convex ball are installed in pairs on the bottom face of the limiting plate and on the left and right sides of the notch, a wedge-shaped surface is opened on the side where the first convex ball and the second convex ball are close to each other, and a notch is opened on the side faces of the notch;

[0006] The limiting plate is diagonally inclined between the bottom end of the elastic plate and the elastic plate, the elastic plate and the limiting plate are kept perpendicular in the vertical direction, the first convex ball is offset and protrudes to one side of the limiting plate with the center line of the limiting plate as the reference point, and the second convex ball is offset and protrudes to the other side, and a plurality of first convex balls and second convex balls are arranged in a row in accordance with the above rule, the wedge-shaped surfaces on the outer surfaces of the first convex ball and the second convex ball are kept parallel to each other, and there is a lateral spacing between the two, so that the two wedge-shaped surfaces are not located on the same water surface line, the top of the wedge-shaped surface is seamlessly connected to the notch, and the whole is located on the same horizontal plane;

[0007] The elastic plate and the limiting plate maintain the following rules in the working state: the elastic plate is in a semicircular arc shape as a whole in the working state, and simultaneously drives the limiting plate at its bottom end to bend and deform, and twist to form a semi-spiral posture, and the first convex ball and the second convex ball are in close contact through the wedge-shaped surfaces opened on each other's surfaces, and the first convex ball and the second convex ball are staggered.

[0008] In a preferred embodiment, the number of the first convex balls and the second convex balls is several, and the several first convex balls and the second convex balls are sequentially distributed in pairs on the left and right sides of the plurality of notches.

[0009] In a preferred embodiment, the bottom end horizontal plane of the limiting plate is higher than the bottom end horizontal plane of the rubber strip, and a belt buckle is provided on the surface of the tightening belt.

[0010] In a preferred embodiment, the elastic plate and the limiting plate are made entirely of highly elastic material, there are two limiting plates, and the two limiting plates are distributed on the bottom end surfaces of the two elastic plates in a mirror-symmetrical manner.

[0011] In a preferred embodiment, the depth of the notch is less than or equal to half of the overall height of the limiting plate, and the notch is in an overall rectangular shape.

[0012] In a preferred embodiment, the first convex ball and the second convex ball are distributed on the diagonal line of the notch, and the overall structures of the first convex ball and the second convex ball are the same. While one side of the first convex ball and the second convex ball protrude from the side surface of the limiting plate respectively, their bottom ends also protrude from the bottom surface of the limiting plate, and the volume of the first convex ball and the second convex ball protruding from the side surface and bottom surface of the limiting plate does not exceed half of their own volume.

[0013] In a preferred embodiment, the wedge-shaped surface as a whole maintains an inclined posture with respect to the centers of the first convex ball and the second convex ball, and the wedge-shaped surface as a whole maintains an inclined distribution with respect to the limiting plate.

[0014] Technical effects and advantages of the present invention:

[0015] The present invention arranges an elastic plate, a limiting plate, a first convex ball and a second convex ball, and utilizes the mutual cooperation of the elastic plate and the limiting plate, and mutually superimposes and couples the directions of the elastic potential energy generated after the elastic plate and the limiting plate are compressed, and forms a composite force field at the patient's waist position with the direction parallel to the lumbar vertebra as the main direction and the eight-shaped inclined direction as the auxiliary direction, so that in the process of vertebra relaxation treatment, the limiting plate with the eight-shaped inclined shape can limit and correct the bad posture that deviates to the left or right, so as to achieve a better treatment effect, and effectively avoid the problem that the lumbar spine is in a twisted posture for a long time during the traction treatment, which will further cause the patient's lumbar spine to be twisted and deformed, and further improve the controllability and safety of the traction treatment;

[0016] By gradually buckling the multiple groups of first convex balls and second convex balls from both ends of the limiting plate toward the middle position, the limiting plate forms a buckled chain structure. After the limiting plate and the elastic plate are used up and removed from the patient's waist, the chain structure formed at the bottom of the limiting plate will gradually overcome the contact friction between the multiple groups of first convex balls and the second convex balls as the elastic force of the limiting plate itself overcomes, thereby being gradually released. The multiple groups of buckled first convex balls and second convex balls are gradually slid and released in sequence until they return to their original positions, ensuring that the speed of the release process is uniform and preventing sudden pressure release from forming at the waist of the patient after long-term traction treatment, thereby causing irritation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall bottom three-dimensional structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the elastic plate and the limiting plate of the present invention;

[0020] Figure 4 It is a schematic diagram of the local structure of one end of the limiting plate of the present invention;

[0021] Figure 5 It is a schematic diagram of the partial structure of the side surface of the limiting plate of the present invention;

[0022] Figure 6 It is a three-dimensional schematic diagram of the working state of the overall structure of the present invention;

[0023] Figure 7 It is a bottom schematic diagram of the overall structure of the present invention in working state;

[0024] Figure 8 It is a schematic diagram of the side structure of the overall structure of the present invention in working state;

[0025] Fig. 9 It is a bottom view of the overall structure of the present invention;

[0026] Fig.10 It is a bottom view of the overall structure of the present invention in a working state;

[0027] Fig.11 It is a top view of the overall structure of the present invention in a working state;

[0028] Fig.12 It is a schematic diagram of the overall side three-dimensional structure of the present invention;

[0029] Fig.13 It is a side schematic diagram of the overall structure of the present invention in a working state;

[0030] Fig.14 It is a schematic diagram of the front structure of the overall structure of the present invention;

[0031] Fig.15 It is a structural schematic diagram of the limiting plate of the present invention in a relaxed state and a working state;

[0032] Fig.16 It is a schematic diagram of the overall side and bottom structure of the limiting plate of the present invention;

[0033] Fig.17 It is a schematic diagram of the force analysis structure of the present invention as a whole in a working state when viewed from above;

[0034] Fig.18 It is a schematic diagram of the force analysis structure when the whole of the present invention is in working state, viewed from above.

[0035] The accompanying drawings are marked as follows: 1. tightening belt; 2. rubber strip; 3. elastic plate; 4. limiting plate; 5. notch; 6. first convex ball; 7. second convex ball; 8. wedge-shaped surface; 9. notch. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] As attached Figure 1 To Attachment Fig.18 A continuous vertebral traction and reduction device shown in the figure comprises a pair of symmetrically arranged tightening belts 1, a rubber strip 2 is fixedly attached to the bottom end of the tightening belt 1, the bottom end of the rubber strip 2 is arranged in an arc shape, a pair of elastic plates 3 are installed together on the side faces of the pair of tightening belts 1, a limiting plate 4 is fixedly installed on the bottom end of the elastic plate 3, a plurality of notches 5 are opened on the side faces of the limiting plate 4 at equal intervals from left to right, and a plurality of notches 5 divide the overall lower half of the limiting plate 4 into a multi-section structure, a first convex ball 6 and a second convex ball 7 are installed in pairs on the bottom face of the limiting plate 4 and on the left and right sides of the notch 5, a wedge-shaped surface 8 is opened on the side where the first convex ball 6 and the second convex ball 7 are close to each other, and a notch 9 is opened on the side face of the notch 5, by using the above arrangement, it can be ensured that the limiting plate 4 of the multi-section structure can ensure its own strength while enhancing its own flexibility and improving its ability of axial torsional deformation;

[0038] The limiting plate 4 is diagonally inclined between the bottom end of the elastic plate 3 and the elastic plate 3, and the elastic plate 3 and the limiting plate 4 are kept perpendicular in the vertical direction. The first convex ball 6 is offset and protruded to one side of the limiting plate 4 with the center line of the limiting plate 4 as the reference point, and the second convex ball 7 is offset and protruded to the other side. A plurality of first convex balls 6 and second convex balls 7 are arranged in a row in accordance with the above rule. The wedge surfaces 8 on the outer surfaces of the first convex ball 6 and the second convex ball 7 are kept parallel to each other, and there is a lateral spacing between the two, so that the two wedge surfaces 8 are not located on the same water surface line, and the top of the wedge surface 8 is seamlessly connected to the notch 9, and the whole is located on the same horizontal plane, using The above arrangement ensures that the multiple groups of first convex balls 6 and second convex balls 7 can be sequentially buckled and fixed to each other to form a whole chain structure, thereby achieving a temporary friction fixing effect. After the use of the limiting plate 4 and the elastic plate 3 is completed, when they are removed from the patient's waist, the chain structure formed at the bottom of the limiting plate 4 will gradually overcome the contact friction between the multiple groups of first convex balls 6 and second convex balls 7 as the elastic force of the limiting plate 4 itself is gradually released, so that the multiple groups of buckled first convex balls 6 and second convex balls 7 are slid and released in sequence until they return to their original positions, ensuring that the speed of the release process is uniform, and it is not easy to form a sudden pressure release on the waist of the patient after long-term traction treatment, thereby causing irritation;

[0039] The elastic plate 3 and the limiting plate 4 maintain the following rules in the working state: the elastic plate 3 is in a semicircular arc shape as a whole in the working state, and synchronously drives the limiting plate 4 at its bottom end to bend and deform, and twist to form a semi-spiral posture, and the first convex ball 6 and the second convex ball 7 are in close contact through the wedge-shaped surfaces 8 opened on each other's surfaces, and the first convex ball 6 and the second convex ball 7 are kept in an alternating distribution. By utilizing the above-mentioned arrangement, the directions of the elastic potential energy generated by the compression of the elastic plate 3 and the limiting plate 4 are superimposed and coupled with each other, and a composite force field is formed at the patient's waist position, so that in the process of relaxation treatment of the vertebrae, the patient's bad posture that is deviated to the left or right is restricted and corrected to achieve a better treatment effect.

[0040] There are several first convex balls 6 and second convex balls 7, which are distributed in pairs on the left and right sides of multiple slots 5 in sequence. The elastic plate 3 and the limiting plate 4 are made of highly elastic material as a whole. There are two limiting plates 4, which are distributed on the bottom end surfaces of the two elastic plates 3 in a mirror-symmetrical manner. At the same time, the two pairs of limiting plates 4 point from the outside to the inside to the central axis of the patient's lumbar vertebrae, forming an "eight" shape, thereby forcing the patient's waist to be restricted in a vertical posture. When the patient's posture is laterally deformed, the limiting plate 4 in the "eight" shape will effectively limit its posture deformation and provide a long-term preload on the patient's waist, forcing the patient to have a good posture of straightening his body. The first convex ball 6 and the second convex ball 7 are distributed on the diagonal line of the slot 5. The first convex ball 6 and the first convex ball 7 are distributed on the diagonal line of the slot 5. The overall structure of the two convex balls 7 is the same. While one side of the first convex ball 6 and the second convex ball 7 protrudes out of the side surface of the limiting plate 4 respectively, their bottom ends also protrude out of the bottom surface of the limiting plate 4, and the volume of the first convex ball 6 and the second convex ball 7 protruding out of the side surface and bottom surface of the limiting plate 4 does not exceed half of their own volume. By using the above-mentioned arrangement, it can be ensured that the distortion distance of the first convex ball 6 and the second convex ball 7 when they slide in contact with each other will not exceed half of their own volume, thereby limiting the friction force after the relative sliding contact between the first convex ball 6 and the second convex ball 7, so that the friction force after the contact between the two is within a reasonable range, thereby ensuring that the two structures have a damping effect after contact without affecting their sensitivity during opening and closing, and further improving the overall release and installation flexibility of the chain structure formed by the first convex ball 6 and the second convex ball 7 being sequentially buckled.

[0041] For details, please refer to the attached manual Figure 1 -Attached Figure 3 The bottom horizontal plane of the limiting plate 4 is higher than the bottom horizontal plane of the rubber strip 2, and a belt buckle is provided on the surface of the tightening belt 1. The wedge-shaped surface 8 as a whole maintains an inclined posture with the center of the first convex ball 6 and the second convex ball 7, and the wedge-shaped surface 8 as a whole maintains an inclined distribution with the limiting plate 4.

[0042] The specific implementation method is: by utilizing the inclined setting of the wedge surface 8, the first convex ball 6 and the second convex ball 7 gradually approach each other and first contact each other through their own surface curvatures and slide relative to each other until the wedge surfaces 8 on both surfaces synchronously contact each other, that is, a temporary fixed posture is achieved.

[0043] For details, please refer to the attached manual Fig.16 The depth of the notch 5 is ≤ half of the overall height of the limiting plate 4, and the notch 5 is rectangular as a whole.

[0044] The specific implementation method is: by utilizing the depth setting of the slot 5, the upper part of the limiting plate 4 is kept as an integral structure, and the lower part is divided into a multi-section structure by a plurality of slots 5, thereby further increasing the flexible movement distance of the limiting plate 4 when twisted, facilitating its own deformation, and further effectively controlling the posture of both sides of the patient's waist.

[0045] Working principle of the present invention:

[0046] Step 1: First, the operator assembles the various components of the device normally, and then uses the device normally.

[0047] Step 2: First, the operator fixes the two tightening belts 1 to the parts of the patient's waist that need traction treatment in turn, first wraps one of the tightening belts 1 around the patient's waist and fixes it, then adjusts the distance between the other tightening belt 1 and the first tightening belt 1, and then squeezes and deforms the elastic plate 3 between the two tightening belts 1, so that it undergoes elastic deformation and forms a semicircular arc structure, then wraps and fixes the other tightening belt 1 to the patient's waist, and at the same time, the rubber strips 2 under the two tightening belts 1 contact and squeeze the patient's limbs, while increasing the contact flexibility, it also increases a certain amount of rigidity of the tightening belt 1 as a whole, so that it can be fixed to the patient's waist more closely, and then the elastic plate 3 can be used to tighten the patient's waist. The elastic potential energy of the plate 3 after being squeezed and deformed drives itself to restore to a straight state, thereby pushing and pressing the patient's waist to both sides to achieve the treatment purpose. During the process of compression and deformation, the elastic plate 3 can simultaneously drive the limiting plate 4 at its bottom to twist and deform, and gradually twist to form a semi-spiral posture. At the same time, during the twisting process of the limiting plate 4, the first convex ball 6 and the second convex ball 7 at its bottom end can be driven to gradually approach each other, and first contact through their own arc surfaces and then slide relative to each other, and then slide to the wedge-shaped surfaces 8 opened on each other's surfaces for fitting contact, and through multiple groups of first convex balls 6 and second convex balls 7, they are gradually buckled from the two ends of the limiting plate 4 to the middle position, and finally The limiting plate 4 is formed into a buckled chain structure, and finally the elastic plate 3 is twisted to form a semicircular arc posture, so that the patient's waist is pushed and pressed on the upper and lower sides of the patient's waist parallel to the central axis of the lumbar vertebrae as the reference line, thereby achieving traction treatment of the vertebrae. At the same time, two groups of symmetrically arranged limiting plates 4 are synchronously twisted to form a semi-spiral structure, so as to limit the patient's waist on both sides. When the patient has a bad posture during treatment, causing the vertebrae to shift to the left or right as a whole, the limiting plate 4 is used to correct the posture. Because the limiting plate 4 is squeezed and deformed with the elastic plate 3, there is an inclination angle between the direction of its elastic potential energy and the elastic plate 3, and the two pairs of limiting plates 4 are directed from the outside to the inside. The central axis of the patient's lumbar vertebrae forms an "eight" shape. Therefore, the directions of the elastic potential energy generated by compression of the elastic plate 3 and the limiting plate 4 are superimposed and coupled with each other, and a composite force field is formed at the patient's waist position, which is dominated by the direction parallel to the lumbar vertebrae and auxiliary by the "eight" inclined direction. Therefore, in the process of vertebral relaxation treatment, the limiting plate 4 with an "eight" inclined shape can be used to limit and correct the bad posture that is offset to the left or right, so as to achieve a better treatment effect, and effectively avoid the lumbar spine being pulled and stretched in a twisted posture for a long time during the traction treatment, which will further cause the patient's lumbar spine to twist and deform. Finally, the device completes the working process of vertebral traction treatment for the patient.

[0048] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aged and severely worn parts inside the device.

[0049] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0050] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0051] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous vertebral traction and reduction device, comprising a pair of symmetrically arranged tightening belts, characterized in that: A rubber strip is fixedly attached to the bottom end of the tightening band, and the bottom end of the rubber strip is set in an arc shape. A pair of elastic plates are installed on the side surfaces of a pair of tightening bands. A limiting plate is fixedly installed on the bottom end of the elastic plate. A plurality of notches are opened at equal intervals from left to right on the side surface of the limiting plate. The plurality of notches divide the entire lower half of the limiting plate into a multi-section structure. A first convex ball and a second convex ball are installed in pairs on the bottom surface of the limiting plate and on the left and right sides of the notch. A wedge-shaped surface is opened on the side where the first convex ball and the second convex ball are close to each other, and a notch is opened on the side surface of the notch. The limiting plate is diagonally inclined between the bottom end of the elastic plate and the elastic plate, the elastic plate and the limiting plate are kept perpendicular in the vertical direction, the first convex ball is offset and protrudes to one side of the limiting plate with the center line of the limiting plate as the reference point, and the second convex ball is offset and protrudes to the other side, and a plurality of first convex balls and second convex balls are arranged in a row in accordance with the above rule, the wedge-shaped surfaces on the outer surfaces of the first convex ball and the second convex ball are kept parallel to each other, and there is a lateral spacing between the two, so that the two wedge-shaped surfaces are not located on the same water surface line, the top of the wedge-shaped surface is seamlessly connected to the notch, and the whole is located on the same horizontal plane; The elastic plate and the limiting plate maintain the following rules in the working state: the elastic plate is in a semicircular arc shape as a whole in the working state, and simultaneously drives the limiting plate at its bottom end to bend and deform, and twist to form a semi-spiral posture, and the first convex ball and the second convex ball are in close contact through the wedge-shaped surfaces opened on each other's surfaces, and the first convex ball and the second convex ball are staggered.

2. A continuous vertebral traction and reduction device according to claim 1, characterized in that: There are a plurality of the first convex balls and the second convex balls, and the plurality of the first convex balls and the second convex balls are sequentially distributed in pairs on the left and right sides of the plurality of notches.

3. A continuous vertebral traction and reduction device according to claim 1, characterized in that: The bottom end horizontal plane of the limiting plate is higher than the bottom end horizontal plane of the rubber strip, and a belt buckle is arranged on the surface of the tightening belt.

4. A continuous vertebral traction and reduction device according to claim 1, characterized in that: The elastic plate and the limiting plate are made of highly elastic material as a whole. There are two limiting plates, which are distributed on the bottom end surfaces of the two elastic plates in a mirror-symmetrical manner.

5. A continuous vertebral traction and reduction device according to claim 1, characterized in that: The depth of the notch is less than or equal to half of the overall height of the limiting plate, and the notch is in a rectangular shape as a whole.

6. A continuous vertebral traction and reduction device according to claim 1, characterized in that: The first convex ball and the second convex ball are distributed on the diagonal line of the slot, and the overall structures of the first convex ball and the second convex ball are the same. One side of the first convex ball and the second convex ball protrude from the side surface of the limiting plate respectively, and the bottom ends of both of them also protrude from the bottom surface of the limiting plate, and the volume of the first convex ball and the second convex ball protruding from the side surface and bottom surface of the limiting plate does not exceed half of their own volume.

7. A continuous vertebral traction and reduction device according to claim 1, characterized in that: The wedge-shaped surface as a whole maintains an inclined posture with respect to the centers of the first convex ball and the second convex ball, and the wedge-shaped surface as a whole maintains an inclined distribution with respect to the limiting plate.

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