Drafting device capable of accurately controlling continuous drafting force

Abstract

The utility model relates to a drafting device capable of accurately controlling continuous drafting force, which is used in an orthosis, can slowly and continuously draft a spine, and comprises a longitudinal drafting assembly and a transverse drafting assembly, the longitudinal drafting assembly comprises an upper drafting plate, a lower drafting plate and a lifting mechanism used for adjusting the distance between the upper drafting plate and the lower drafting plate, and the lifting mechanism is arranged between the upper drafting plate and the lower drafting plate. The number of the transverse drafting assemblies is multiple, the transverse drafting assemblies are vertically arranged on the longitudinal drafting assembly at intervals, the transverse drafting assemblies are transversely arranged, each transverse drafting assembly comprises a fixed plate, a movable plate and an adjusting screw used for adjusting the distance between the fixed plate and the movable plate, and the adjusting screw is arranged between the fixed plate and the movable plate. Through the combination of transverse and longitudinal traction forces, the traction forces are accurate and controllable, the slow and continuous traction forces are provided, the orthosis is flexibly suitable for patients with different scoliosis conditions, and the treatment effect of the orthosis can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical rehabilitation equipment technical field especially, relate to a kind of stretching device of accurate control sustained stretching force. BACKGROUND

[0002] Scoliosis refers to the complex three-dimensional deformity of one or several segments of the spine in the coronal plane, sagittal plane and horizontal plane. The application of scoliosis, orthosis and related technology is an important intervention means for early detection and early treatment. The correction mechanism of orthosis for spinal deformity is to apply force and torque in the opposite direction to the spine on the body surface of the patient through three-point mechanics or four-point mechanics principle, so as to stretch the spine and change the load in the three-dimensional space growth of the spine to assist the patient in correcting the spine.

[0003] Patent publication number CN219516719U discloses a wearable spinal stretching device, which includes a head fixing part, a shoulder fixing part and a waist fixing part. The wearing position is relatively fixed, and the correction structure is also relatively fixed and difficult to adjust. Therefore, it is difficult to flexibly correct different scoliosis conditions of patients, and the adaptability to different scoliosis patients is not strong. Patent publication number CN212281813U discloses a three-dimensional correction of scoliosis deformity in vitro non-invasive sustained stretching device, which can solve the problems of single correction support point, lack of non-invasive sustained stretching technology, and poor individual adaptability and use flexibility for different scoliosis correction. However, the overall structure is relatively complex, and the operation convenience needs to be improved. SUMMARY

[0004] The utility model discloses in order to solve the problem that the existing stretching device operation is relatively cumbersome, and the adaptability to patient is not strong, provide a kind of stretching device of accurate control sustained stretching force, simplify the structure of stretching device so that it satisfies longitudinal, lateral slow sustained stretching, and also can be conveniently operated and adjusted, can flexibly correct the patient of different scoliosis conditions, increase the application range of correction.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A stretching device capable of accurately controlling sustained stretching force is used in an orthosis and can slowly and continuously stretch the spine. The stretching device includes a longitudinal stretching assembly and a transverse stretching assembly. The longitudinal stretching assembly is arranged longitudinally to provide force in the vertical direction of the human body trunk to correct the spine. The longitudinal stretching assembly includes an upper stretching plate, a lower stretching plate, and a lifting mechanism for adjusting the distance between the upper stretching plate and the lower stretching plate. The lower stretching plate is arranged to slide the upper stretching plate. The lifting mechanism is arranged between the upper stretching plate and the lower stretching plate to facilitate the sliding of the upper stretching plate.

[0007] The number of the transverse traction assemblies is multiple, and the multiple transverse traction assemblies are arranged in an upper-lower interval on the longitudinal traction assembly. The transverse traction assembly is arranged transversely, which facilitates providing a force in a horizontal direction of the human body trunk to correct the spine. The transverse traction assembly comprises a fixed plate, a movable plate and an adjusting screw rod for adjusting the distance between the fixed plate and the movable plate. The movable plate is arranged on one side of the fixed plate in a manner capable of being adjusted, and the adjusting screw rod is arranged between the fixed plate and the movable plate.

[0008] Further, the upper traction plate and the lower traction plate are both thin plate bodies capable of being bent. The arrangement direction of the upper traction plate is consistent with that of the lower traction plate. The lower traction plate is provided with guide pieces on both sides of the upper portion in a symmetrical manner. The upper traction plate is arranged between the guide pieces on both sides and slides therebetween. The upper end of the upper traction plate extends upward beyond the lower traction plate. The guide pieces facilitate guiding the sliding of the upper traction plate and avoid the deviation of the moving direction of the upper traction plate.

[0009] Further, the lifting mechanism comprises a quadrilateral mechanism arranged in a diamond shape and a bidirectional screw rod for driving the movement of the quadrilateral mechanism. The quadrilateral mechanism comprises four connecting rods arranged in a diamond shape. Adjacent two connecting rods are hingedly connected at the ends. The upper and lower hinge connection points of the quadrilateral mechanism are connected with the upper traction plate and the lower traction plate respectively.

[0010] Further, the quadrilateral mechanism is provided with movable threaded barrels at the left and right hinge connection points. The bidirectional screw rod is threadedly connected between the two movable threaded barrels. The thread rotation directions on both sides of the bidirectional screw rod are opposite. The arrangement direction of the bidirectional screw rod is perpendicular to the arrangement direction of the upper traction plate. The bidirectional screw rod facilitates adjusting the height of the quadrilateral mechanism and further controls the mutual approach and separation of the upper traction plate and the lower traction plate.

[0011] Further, the number of the transverse traction assemblies is three. Two groups of the transverse traction assemblies are detachably connected with the lower traction plate, and the other group of the transverse traction assemblies is detachably connected with the upper traction plate. Each group of the traction assemblies comprises two assemblies arranged in a left-right manner.

[0012] Further, there is an overlap between the upper traction plate and the lower traction plate. A plurality of installation holes are formed in the upper traction plate and the lower traction plate. The number of the installation holes in each column is a plurality of holes arranged in a linear manner in an upper-lower direction, which facilitates adjusting the installation height position of the transverse traction assembly.

[0013] Any installation hole on the fixed plate in one group of the transverse traction assemblies located on the upper portion of the longitudinal traction assembly is screw-connected with any installation hole on the upper traction plate; and any installation hole on the fixed plate in one group of the transverse traction assemblies located on the lower portion of the longitudinal traction assembly is screw-connected with any installation hole on the lower traction plate.

[0014] The middle part of the upper drafting board is provided with a long hole, the long hole and the upper drafting board correspond to the overlapping area of the lower drafting board, and the fixing plate in a group of transverse drafting assemblies in the middle part of the longitudinal drafting assembly is arranged in the long hole and is screw-connected with any mounting hole on the upper drafting board corresponding to the long hole.

[0015] Further, the fixing plate is screw-connected with the upper drafting board or the lower drafting board on both sides, so that the fixing plate is convenient to disassemble and assemble and the position is convenient to adjust, the movable plate and the fixing plate are located on the same plane, the movable plate is a thin plate which can be bent, and the length of the movable plate is greater than that of the fixing plate.

[0016] The fixing plate is provided with a fixing sleeve, the adjusting screw is arranged in the fixing sleeve, the movable plate is provided with a movable sleeve, one end of the adjusting screw extends outward into the movable sleeve and out of the movable sleeve, adjusting nuts are arranged on the adjusting screws on both sides of the movable sleeve, and the two adjusting nuts cooperate to clamp the movable sleeve.

[0017] Through the above technical scheme, the beneficial effects of the utility model are as follows:

[0018] The utility model discloses a reasonable structure, and the longitudinal drafting assembly of telescopic structure can realize the adjustment of longitudinal drafting force, and the transverse drafting assembly can realize the adjustment of transverse drafting force, so that the slow and continuous drafting force of the transverse and longitudinal accurate control can be combined to optimize the existing rigid orthosis and optimize the dynamic three-dimensional orthosis with the drafting force of the drafting device which can be accurately adjusted. The installation position of the transverse drafting assembly is adjustable, and then the scoliosis occurring at different positions can be corrected.

[0019] The utility model discloses that the adjustment of the lifting mechanism and the transverse drafting assembly is all adopted screw means, and the force of drafting correction is convenient, accurate and flexible to adjust, can avoid the discomfort and pain caused by the correction force being too large, and can ensure the continuous correction force. Meanwhile, the application of the screw adjustment means is not only convenient to operate and use, but also improves the universality of the longitudinal drafting assembly and the transverse drafting assembly, and can adapt to the treatment of different scoliosis patients.

[0020] The utility model discloses that the adjustment of the drafting force is realized through the screw, and then the drafting force adjustment has the characteristics of accurate control, slow and continuous drafting, so that the body gradually adapts to the force, the drafting device is applied in the orthosis, greatly increases the treatment comfort of the orthosis, and improves the treatment effect. The slow and continuous drafting force of accurate control can dynamically adjust the applied force during the treatment of the orthosis, increases the application range and treatment effect of the orthosis. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the front view of the utility model discloses a kind of accurate control sustained drafting force drafting device.

[0022] Figure 2 is the stretching device of the utility model for precise control of sustained stretching force Figure 1 The longitudinal stretching assembly schematic view.

[0023] Figure 3 is the stretching device of the utility model for precise control of sustained stretching force Figure 1 The lifting mechanism schematic view.

[0024] Figure 4 is the stretching device of the utility model for precise control of sustained stretching force Figure 1 The longitudinal stretching assembly and the transverse stretching assembly split schematic view.

[0025] Figure 5 is the stretching device of the utility model for precise control of sustained stretching force Figure 1 The transverse stretching assembly schematic view.

[0026] Figure 6 It is the stretching device of the utility model for precise control of sustained stretching force embodiment in the stretching device and the orthopedic brace installation state schematic view.

[0027] Figure 7 It is the stretching device of the utility model for precise control of sustained stretching force embodiment in the orthopedic brace produces stretching force schematic view to the spine.

[0028] Figure 8 is the stretching device of the utility model for precise control of sustained stretching force Figure 7 Different orthopedic brace state schematic view is selected for different scoliosis types.

[0029] The figure mark is: 1 longitudinal stretching assembly, 101 upper stretching plate, 102 lower stretching plate, 103 lifting mechanism, 2 transverse stretching assembly, 201 fixed plate, 202 movable plate, 203 adjusting screw rod, 3 quadrilateral mechanism, 4 bidirectional screw rod, 5 movable threaded cylinder, 6 prism, 7 guide piece, 8 mounting hole, 9 long hole, 10 fixed sleeve, 11 movable sleeve, 12 adjusting nut, 13 orthopedic brace, 131 brace one, 132 brace two, 133 brace three, 14 connecting hole. Specific implementation

[0030] The specific implementation of the utility model is described in detail below:

[0031] As Figures 1-8 The stretching device for precise control of sustained stretching force is used in the orthopedic brace, and can slowly and continuously stretch the spine. The stretching device comprises a longitudinal stretching assembly 1 and a transverse stretching assembly 2, can provide precise and controllable slow and continuous stretching force, and is transverse and longitudinal stretching force, thereby improving the treatment effect of the orthopedic brace.

[0032] The longitudinal stretching assembly 1 is arranged longitudinally to provide longitudinal stretching force, that is, to provide force in the vertical direction of the human body. The longitudinal stretching assembly 1 comprises an upper stretching plate 101, a lower stretching plate 102 and a lifting mechanism 103 for adjusting the distance between the upper stretching plate 101 and the lower stretching plate 102, so that the longitudinal stretching assembly 1 has a telescopic function. The upper stretching plate 101 and the lower stretching plate 102 are both thin plate bodies that can be bent. The arrangement direction of the upper stretching plate 101 is consistent with that of the lower stretching plate 102. The upper stretching plate 101 and the lower stretching plate 102 are arranged in a vertical line and overlap each other. The upper stretching plate 101 is arranged to slide on the lower stretching plate 102. The upper stretching plate 101 can move relative to the lower stretching plate 102.

[0033] In order to realize the telescopic function of the longitudinal stretching assembly 1, the lifting mechanism 103 is arranged between the upper stretching plate 101 and the lower stretching plate 102. The lifting mechanism 103 is used to control the length of the longitudinal stretching assembly 1. The lifting mechanism 103 comprises a quadrilateral mechanism 3 arranged in a diamond shape and a bidirectional screw rod 4 used to drive the movement of the quadrilateral mechanism 3. The quadrilateral mechanism 3 comprises four connecting rods arranged in a diamond shape. The ends of adjacent two connecting rods are connected by a bolt hinge. The upper and lower hinge points of the quadrilateral mechanism 3 are connected to the upper stretching plate 101 and the lower stretching plate 102, respectively. The lower hinge point of the quadrilateral mechanism 3 is fixed, and the upper hinge point can change in height, which indicates the movement of the upper stretching plate 101. The relative movement of the upper stretching plate 101 and the lower stretching plate 102 can be realized by the movement of the quadrilateral mechanism 3, and the length of the longitudinal stretching assembly 1 changes.

[0034] When the quadrilateral mechanism 3 moves, the left and right spacing of the quadrilateral mechanism 3 can be adjusted, and the height of the quadrilateral mechanism 3 changes at the same time. The movable threaded barrels 5 are arranged at the left and right hinge points of the quadrilateral mechanism 3, and the movable threaded barrels 5 do not affect the normal hinge movement of the quadrilateral mechanism 3. The bidirectional screw rod 4 is threadedly connected between the two movable threaded barrels 5. The threads on the two sides of the bidirectional screw rod 4 are opposite in rotation direction. The arrangement direction of the bidirectional screw rod 4 is perpendicular to the arrangement direction of the upper stretching plate 101. The movement of the quadrilateral mechanism 3 can be controlled by turning the bidirectional screw rod 4.

[0035] After the bidirectional screw rod 4 is turned, the two movable threaded barrels 5 can move closer to or away from each other, and the height of the quadrilateral mechanism 3 can be lengthened or shortened. The relative spacing between the upper stretching plate 101 and the lower stretching plate 102 can be changed by the quadrilateral mechanism 3, so as to achieve the purpose of length adjustment. In order to facilitate the operation of the bidirectional screw rod 4, a prism 6 is arranged in the middle of the bidirectional screw rod 4. The prism 6 is coaxial with the axis of the bidirectional screw rod 4. The prism 6 is operated by a tool, which facilitates the operation of the bidirectional screw rod 4, and the length adjustment function of the longitudinal stretching assembly 1 is achieved.

[0036] In order to prevent the upper and lower traction plates 101 and 102 from being skewed when they move relative to each other, guide pieces 7 are symmetrically arranged on the upper part of the lower traction plate 102. The guide pieces 7 are bent into a " " shape, and one end of each guide piece 7 is connected to the lower traction plate 102. The two guide pieces 7 and the lower traction plate 102 are combined to form a cross-section in the shape of an open rectangular flat tube, i.e., one side wall of the rectangular flat tube is broken in the middle and is not closed.

[0037] The guide pieces 7 and the lower traction plate 102 have a gap therebetween, which is used to facilitate the insertion of the upper traction plate 101. The upper traction plate 101 is arranged between the two guide pieces 7 and slides therebetween. The upper end of the upper traction plate 101 extends out of the lower traction plate 102. The guide pieces 7 can limit the movement of the upper traction plate 101 to prevent the upper traction plate 101 from being skewed when it moves, thereby ensuring the consistency of the arrangement direction of the upper and lower traction plates 101 and 102.

[0038] Based on the adjustable length of the longitudinal traction assembly 1, different degrees of longitudinal traction force can be provided. The horizontal traction assembly 2 is installed on the longitudinal traction assembly 1, and the movement of the longitudinal traction assembly 1 can drive the horizontal traction assembly 2 to move up and down. The horizontal traction assembly 2 is arranged horizontally and provides a force in the horizontal direction of the human body.

[0039] In this embodiment, the number of horizontal traction assemblies 2 is three, and the three horizontal traction assemblies 2 are arranged on the longitudinal traction assembly 1 in an upper-middle-lower manner and are parallel to each other. Two of the three horizontal traction assemblies 2 are detachably connected to the lower traction plate 102, and the lower traction plate 102 can drive the two horizontal traction assemblies 2 to move. The other horizontal traction assembly 2 is detachably connected to the upper traction plate 101, and the upper traction plate 101 can drive the horizontal traction assembly 2 to move. Each group of traction assemblies includes two traction assemblies arranged side by side.

[0040] In order to facilitate the installation of the horizontal traction assembly 2, three rows of mounting holes 8 are formed on the upper and lower traction plates 101 and 102. Each row of mounting holes 8 includes a plurality of mounting holes arranged in a linear manner. This improves the flexibility of the installation of the horizontal traction assembly 2, and the installation position of the horizontal traction assembly 2 is adjustable.

[0041] The horizontal traction assembly 2 includes a fixed plate 201, a movable plate 202, and an adjusting screw 203 used to adjust the distance between the fixed plate 201 and the movable plate 202. The horizontal traction assembly 2 is connected to the upper or lower traction plate 101 or 102 through the fixed plate 201. Specifically, the fixed plate 201 of one group of horizontal traction assemblies 2 arranged on the upper part of the longitudinal traction assembly 1 is connected to any mounting hole 8 on the upper traction plate 101 through a screw. The fixed plate 201 of another group of horizontal traction assemblies 2 arranged on the lower part of the longitudinal traction assembly 1 is connected to any mounting hole 8 on the lower traction plate 102 through a screw.

[0042] Because of the overlapping part between the upper traction plate 101 and the lower traction plate 102, and the two groups of transverse traction assemblies 2 arranged on the lower traction plate 102, on the basis of clearly connecting and installing structure of one group of transverse traction assemblies 2, the other group of transverse traction assemblies 2 needs to open a long hole 9 when installing. Specifically, a long hole 9 is opened in the middle of the upper traction plate 101, the long hole 9 occupies the area of a column of installation holes 8 in the middle of the upper traction plate 101, and the long hole 9 and the upper traction plate 101 correspond to the overlapping area of the lower traction plate 102. The fixed plate 201 in the middle of the longitudinal traction assembly 1 is placed in the long hole 9, and the fixed plate 201 and any installation hole 8 on the corresponding upper traction plate 101 in the long hole 9 are screw connected. In this way, two groups of transverse traction assemblies 2 can be installed on the lower traction plate 102, the lower traction plate 102 drives the transverse traction assembly 2 to move downward, and the upper traction plate 101 does not interfere with the movement of the downward moving transverse traction assembly 2.

[0043] The movable plate 202 is adjustably arranged on one side of the fixed plate 201, the movable plate 202 and the fixed plate 201 are located on the same plane, and the length of the movable plate 202 is greater than that of the fixed plate 201. The movable plate 202 is a thin plate that can be bent, so that the movable plate 202, the upper traction plate 101 and the lower traction plate 102 can all be bent and deformed due to external force. In order to realize the adjustment of the distance between the fixed plate 201 and the movable plate 202, an adjusting screw 203 is arranged between the fixed plate 201 and the movable plate 202, and the distance between the movable plate 202 and the longitudinal traction assembly 1 can be changed through the adjusting screw 203.

[0044] When the adjusting screw 203 is installed, the fixed sleeve 10 is arranged on the fixed plate 201, and the adjusting screw 203 is fixedly arranged in the fixed sleeve 10. At the same time, the movable sleeve 11 is arranged on the movable plate 202, one end of the adjusting screw 203 extends outwardly into the movable sleeve 11 and protrudes out of the movable sleeve 11, adjusting nuts 12 are arranged on the adjusting screw 203 on both sides of the movable sleeve 11, the two adjusting nuts 12 cooperate to clamp the movable sleeve 11, and the relative movement of the adjusting screw 203 and the movable sleeve 11 is realized. At this time, the movable sleeve 11 cannot move axially along the adjusting screw 203.

[0045] The principle of the utility model is: when applied, the traction device is assembled according to the scoliosis of the patient, the transverse traction assembly 2 is flexibly arranged on the longitudinal traction assembly 1, and two traction devices are assembled. The longitudinal arrangement is respectively arranged on the front and back sides of the human body trunk, that is, the positions in front of the chest and behind the back of the human body. Then the orthopedic brace 13 is arranged between the transverse traction assemblies 2 of the front and back corresponding traction devices, and the orthopedic brace 13 is a curved shell structure that fits the corresponding parts of the human body trunk, which constitutes the orthopedic device structure.

[0046] Here the orthopedic brace 13 includes the brace one 131, the brace two 132 and the brace three 133 arranged in sequence from top to bottom outside the human body trunk, the brace one 131 is connected with the upper chest of the human body trunk, the brace one 131 is a left-right split structure, and at least in the left and right directions, the upper chest is supported. The brace two 132 is connected with the waist and abdomen of the human body trunk, the brace two 132 is at least two pieces, and at least in the left and right directions, the waist and abdomen are supported. The brace three 133 is connected with the hip of the human body trunk, the brace three 133 is arranged in a ring shape, and the hip is supported.

[0047] When the orthopedic brace 13 is installed, the orthopedic brace 13 and the movable plate 202 in the transverse traction assembly 2 are installed, specifically, the movable plate 202 and the orthopedic brace 13 are screw connected, two rows of connecting holes 14 are formed in the movable plate 202, the number of each row of connecting holes 14 is multiple, at least any two connecting holes 14 can be selected, and the connecting holes 14 and the orthopedic brace 13 are connected and fixed through screws. Ensure that the brace one 131, the brace two 132 and the brace three 133 and the corresponding parts of the human body trunk fit, so that the orthosis is worn on the human body.

[0048] After wearing, the cooperation of the upper traction plate 101 and the lower traction plate 102 in the longitudinal traction assembly 1 can provide a basis for the orthosis of the spine. The longitudinal traction assembly 1 can form upward and downward longitudinal traction force on the human body, and the transverse traction assembly 2 can form left and right transverse traction force on the human body. The height position of the transverse traction assembly 2 can be adjusted through the lifting mechanism 103, and then the position of the orthopedic brace 13 can be changed, so that the orthopedic brace 13 corresponds to the deformed position of the spine. When adjusting, a group of transverse traction assemblies 2 connected with the upper traction plate 101 change, and two groups of transverse traction assemblies 2 connected with the lower traction plate 102 change at the same time. Then the position of the movable plate 202 is adjusted through the adjusting screw 203, and then the left and right positions of the orthopedic brace 13 are changed, so that the orthopedic brace 13 can generate appropriate correction force on the deformed spine.

[0049] After wearing for a period of time, the left and right positions of the orthopedic brace 13 can be adjusted through the screw adjustment means according to the deformation amount of the spine, and the spine is gradually and accurately corrected, so that the body gradually adapts to the force, greatly increases the treatment comfort of the orthosis, and improves the treatment effect.

[0050] The stretcher of the utility model can adjust longitudinal traction force and transverse traction force, and then can stretch a certain distance regularly, which is appropriate according to the tolerance of the patient, so as to avoid discomfort and pain caused by excessive traction force. Through transverse stretching and then longitudinal stretching, the screw connection means is adopted, so that the transverse and longitudinal stretching can achieve the effect of accurate control, and at the same time, slow and continuous stretching can be realized, so as to achieve effective orthopedic effect.

[0051] The transverse stretching assembly 2 can be arranged on the longitudinal stretching assembly 1 flexibly, and then the support one 131 and the support two 132 can be flexibly installed according to the scoliosis type and the apical vertebra position, two or one of the support one 131 and the support two 132 are installed, so that the relative "three-point or four-point" orthopedic force is formed, as shown in the figure, and the scoliosis deformity is corrected better. Figure 7

[0052] Figure 7 The middle a figure shows one apical vertebra, and three horizontal arrows indicate that the three transverse stretching assemblies are used for correction, the horizontal arrow direction is the relative force direction, and the middle horizontal arrow points to the apical vertebra position. The middle b figure shows two apical vertebrae, and four horizontal arrows indicate that the four transverse stretching assemblies are used for correction, the horizontal arrow direction is the relative force direction, and the middle two horizontal arrows point to the apical vertebra position. Taking the scoliosis type shown in the figure as an example, different orthoses can be flexibly selected, as shown in the figure. Figure 7 Figure 8 Figure 7 The orthosis shown in the middle a figure can be used for correction. Figure 8 Figure 7 The orthosis shown in the middle b figure can be used for correction. Figure 8

[0053] The longitudinal force is provided through the front and rear longitudinal stretching assemblies, the transverse stretching assembly can be arranged on the longitudinal stretching assembly flexibly, and the orthosis can be flexibly adjusted according to the scoliosis and the apical vertebra position. The transverse force is provided through the transverse stretching assembly, the longitudinal force is combined with the transverse force, and then the orthosis can be accurately and dynamically adjusted, so that the treatment effect is ensured. When the longitudinal force is adjusted, the position of the transverse stretching assembly corresponding to the apical vertebra position is unchanged, and then the transverse force remains unchanged.

[0054] The above-mentioned embodiments are only preferred embodiments of the utility model, and do not limit the implementation range of the utility model, so that equivalent changes or modifications made according to the structure, features and principles of the utility model patent range should be included in the utility model application patent range.​​​​​

Claims

1. A stretch device for use in an orthosis, which can precisely control a constant stretching force, and which can slowly and constantly stretch a spine, characterized in that, The invention relates to a longitudinal drafting assembly (1) and a transverse drafting assembly (2), the longitudinal drafting assembly (1) is longitudinally arranged, the longitudinal drafting assembly (1) comprises an upper drafting plate (101), a lower drafting plate (102) and a lifting mechanism (103) for adjusting the distance between the upper drafting plate (101) and the lower drafting plate (102), the lower drafting plate (102) is slidably arranged on the upper drafting plate (101), and the lifting mechanism (103) is arranged between the upper drafting plate (101) and the lower drafting plate (102). The transverse drafting assembly (2) is arranged transversely, and the transverse drafting assembly (2) comprises a fixed plate (201), a movable plate (202) and an adjusting screw (203) for adjusting the distance between the fixed plate (201) and the movable plate (202), the movable plate (202) is adjustably arranged on one side of the fixed plate (201), and the adjusting screw (203) is arranged between the fixed plate (201) and the movable plate (202).

2. The tensioner of claim 1, wherein, The upper drafting plate (101) and the lower drafting plate (102) are both thin plate bodies that can be bent, the arrangement direction of the upper drafting plate (101) is consistent with the arrangement direction of the lower drafting plate (102), guide fins (7) are symmetrically arranged on the upper part of the lower drafting plate (102), the upper drafting plate (101) is arranged between the guide fins (7) on the two sides, and the upper end of the upper drafting plate (101) extends upwards out of the lower drafting plate (102).

3. The tensioner of claim 1, wherein, The lifting mechanism (103) comprises a quadrilateral mechanism (3) arranged in a rhombus shape and a bidirectional screw (4) for driving the quadrilateral mechanism (3) to move, the quadrilateral mechanism (3) comprises four connecting rods arranged in a rhombus shape, adjacent two connecting rods are hingedly connected between the end portions, and the upper and lower hinge connection points of the quadrilateral mechanism (3) are connected with the upper drafting plate (101) and the lower drafting plate (102) respectively.

4. The tensioner of claim 3, wherein the spring is a torsion spring. The left and right hinge connection points of the quadrilateral mechanism (3) are provided with movable threaded barrels (5), the bidirectional screw (4) is threadedly connected between the two movable threaded barrels (5), the thread rotation directions of the two sides of the bidirectional screw (4) are opposite, and the arrangement direction of the bidirectional screw (4) is perpendicular to the arrangement direction of the upper drafting plate (101).

5. The tensioner of claim 1, wherein, The number of the transverse drafting assembly (2) is three groups, two groups of the transverse drafting assembly (2) are detachably connected with the lower drafting plate (102), and the other group of the transverse drafting assembly (2) is detachably connected with the upper drafting plate (101), and each group of the drafting assembly comprises two groups arranged in a left-right manner.

6. The tensioner of claim 5, wherein the spring is a torsion spring. The upper drafting plate (101) and the lower drafting plate (102) overlap, a plurality of installation holes (8) are formed in the upper drafting plate (101) and the lower drafting plate (102), and the number of each column of the installation holes (8) is a plurality of installation holes (8) arranged in a straight line in a top-bottom manner. Any of the mounting holes (8) on the fixed plate (201) and the upper stretching plate (101) in a set of transverse stretching assemblies (2) located at the upper part of the longitudinal stretching assembly (1) are screw-connected; any of the mounting holes (8) on the fixed plate (201) and the lower stretching plate (102) in a set of transverse stretching assemblies (2) located at the lower part of the longitudinal stretching assembly (1) are screw-connected; A long hole (9) is formed in the middle of the upper stretching plate (101), the long hole (9) and the upper stretching plate (101) correspond to the overlapping area with the lower stretching plate (102), the fixed plate (201) in a set of transverse stretching assemblies (2) located at the middle of the longitudinal stretching assembly (1) is placed in the long hole (9) and screw-connected with any of the mounting holes (8) on the corresponding upper stretching plate (101) in the long hole (9).

7. The tensioner of claim 1, wherein, The fixed plate (201) is screw-connected with the upper stretching plate (101) or the lower stretching plate (102) on both sides, the movable plate (202) and the fixed plate (201) are located on the same plane, the movable plate (202) is a thin plate which can be bent, and the length of the movable plate (202) is greater than that of the fixed plate (201); A fixed sleeve (10) is arranged on the fixed plate (201), the adjusting screw (203) is arranged in the fixed sleeve (10), a movable sleeve (11) is arranged on the movable plate (202), one end of the adjusting screw (203) extends outward into the movable sleeve (11) and protrudes out of the movable sleeve (11), adjusting nuts (12) are arranged on the adjusting screws (203) on both sides of the movable sleeve (11), and the two adjusting nuts (12) cooperate to clamp the movable sleeve (11).

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