Spine corrector with longitudinal force unloading function

Abstract

The invention relates to the technical field of spine correction instruments, in particular to a spine corrector with a longitudinal force unloading function. The upper connecting frame and the lower connecting frame are arranged on the back side, a first connecting sleeve is arranged on the upper connecting frame, and the first connecting sleeve is connected with the position, corresponding to the chest section, of the trunk; the lower connecting frame is arranged below the upper connecting frame, a waist support is arranged at the front end of the lower connecting frame, and a second connecting sleeve is arranged on the lower connecting frame corresponding to the lower side of the waist support; the power-assisted connecting piece is connected between the upper connecting frame and the lower connecting frame; the inhaul cable is connected to the power-assisted connecting piece, and the inhaul cable is used for pulling the power-assisted connecting piece in the rear-lower direction; a force unloading component is arranged between the upper connecting frame and the power assisting connecting piece and comprises a connecting base and a limiting protruding part which are arranged on the upper connecting frame and the power assisting connecting piece respectively, a sliding cavity is formed in the connecting base, and the limiting protruding part is arranged in the sliding cavity in a sliding mode and is always separated from the end wall, transmitting longitudinal tension, of the sliding cavity. Longitudinal compression force harmful to the spine can be effectively avoided while sagittal plane unbalance is corrected.

Description

Technical Field

[0001] The invention relates to the technical field of spinal correction instruments, and in particular to a spinal correction device with a longitudinal force unloading function. Background Art

[0002] Sagittal imbalance of the spine is mainly caused by degenerative changes in the spine and its surrounding structures (such as paraspinal muscles). Sagittal imbalance of the spine caused by loss of lumbar lordosis is a common spinal deformity. In order to keep the line of sight horizontal, patients usually activate compensatory mechanisms, which will cause low back pain and limited movement function. Spinal correctors are used to correct sagittal imbalance of the spine. The principle is to apply a forward force to the lumbar spine and a backward force to the thoracic spine. These two forces form a correction force couple.

[0003] However, existing spinal correctors often generate longitudinal compression force while applying the correction force. During the process of correcting the spine, this compression force will have a negative impact on the user's spine and easily cause or aggravate the risk of scoliosis. Therefore, it is urgent to improve the spinal corrector to avoid the generation of longitudinal negative compression force. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a spinal corrector with a longitudinal force unloading function, which can effectively avoid the generation of harmful longitudinal compression force while correcting the sagittal imbalance of the spine.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A spinal corrector with longitudinal force unloading function, comprising: An upper connecting frame and a lower connecting frame are arranged on the back side, the upper connecting frame is provided with a first connecting sleeve, and the first connecting sleeve is connected to the position of the torso corresponding to the thoracic section; the lower connecting frame is arranged below the upper connecting frame, a waist support is arranged at the front end of the lower connecting frame, and a second connecting sleeve is arranged on the lower connecting frame corresponding to the lower side of the waist support; A power-assisting connecting piece, which is connected between the upper connecting frame and the lower connecting frame, and the power-assisting connecting piece is rotatably connected to the lower connecting frame; A cable connected to the power-assisting connecting piece, and used to pull the power-assisting connecting piece in a rearward and downward direction to generate a backward pulling force at the upper connecting frame and a forward thrust at the lumbar support; A force unloading component is provided between the upper connecting frame and the power-assisting connecting piece. The force unloading component includes a connecting seat and a limiting protrusion respectively provided on the upper connecting frame and the power-assisting connecting piece. A sliding cavity is provided on the connecting seat. The sliding cavity extends in the spacing direction between the upper connecting frame and the lower connecting frame. The limiting protrusion is slidably provided in the sliding cavity. The limiting protrusion is always separated from the end wall of the sliding cavity for transmitting the longitudinal tension.

[0006] It should be noted that the situations in which the connecting seat and the limiting protrusion are respectively arranged on the upper connecting frame and the power-assisting connecting member should include situation one or situation two: situation one is that the connecting seat is arranged on the upper connecting frame, and the limiting protrusion is arranged on the power-assisting connecting member. In this case, the limiting protrusion does not conflict with the bottom end of the sliding cavity; situation two is that the connecting seat is arranged on the power-assisting connecting member, and the limiting protrusion is arranged on the upper connecting frame. In this case, the upper end of the sliding cavity does not conflict with the power-assisting connecting member.

[0007] Furthermore, in the present application, a spinal corrector with longitudinal force unloading function, the upper connecting frame includes an upper plate and a lower plate, the lower plate is rotatably connected to the lower end of the upper plate, the first connecting sleeve is a strap, the strap holds the user's shoulders from the front, and the ends of the strap extend backward from the upper and lower sides of the shoulders and are respectively connected to the upper plate and the lower plate. As a preferred embodiment of the present application, in the present application, the upper plate and the lower plate are rotatably connected to adapt to the pitching movement of the user's torso.

[0008] Furthermore, in the present application, a spinal corrector with a longitudinal unloading function is provided, wherein a limiting convex portion is provided at one end of the power-assisting connecting member near the upper connecting frame, and the limiting convex portion includes a pair of rollers rotatably mounted on both sides of the power-assisting connecting member; a connecting seat is fixed to the rear side of the upper plate, the connecting seats are provided in pairs, one end of the power-assisting connecting member near the upper connecting frame is provided between a pair of connecting seats, and a pair of rollers are respectively provided in the sliding cavities on both sides for rolling. As a preferred solution of the present application, a roller is provided for sliding connection with the connecting seat, which can avoid the friction between the limiting convex portion and the sliding cavity causing longitudinal pressure. Furthermore, in the present application, a spinal corrector with a longitudinal unloading function is provided, wherein one end of the cable away from the power-assisting connecting member is connected to the rear side of the corresponding lumbar support on the lower connecting frame, and the second connecting sleeve is connected below the waist. As a preferred solution of the present application, since one end of the cable away from the power-assisting connecting member is connected to the rear side of the corresponding lumbar support on the lower connecting frame, the lower connecting frame is subjected to the reaction force of the cable and the second connecting sleeve, which can generate a forward thrust on the lumbar support.

[0009] Furthermore, in the present application, a spinal corrector with longitudinal force unloading function is provided with a guide wheel on the lower connecting frame, the guide wheel is located at the rear side of the rotating joint between the power-assisting connecting piece and the lower connecting frame, and the cable is pressed on the side of the guide wheel away from the lumbar support. As a preferred solution of the present application, based on the above structure, it has two beneficial effects: one is to ensure the inclination angle of the cable relative to the power-assisting connecting piece, so as to ensure that the cable generates a backward pulling force on the power-assisting connecting piece; the other is to generate a thrust to push the waist forward at the lumbar support.

[0010] Furthermore, a spinal corrector with longitudinal force unloading function in the present application also includes a driver and a wire wheel connected to the driver, the driver is used to drive the wire wheel to rotate, and the cable is connected to the wire wheel. As a preferred solution of the present application, the driver drives the wire wheel to rotate to achieve the tightening and loosening of the cable, thereby adjusting the tension on the power-assisting connecting member.

[0011] Furthermore, in the present application, a spinal corrector with longitudinal force unloading function, the second connecting sleeve is connected to the hip. As a preferred solution of the present application, the position where the front end of the lumbar support contacts the back waist is used as a fulcrum, and when the cable acts on the lower connecting frame, a torque is generated on the second connecting sleeve to pull the hip backward, and combined with the forward thrust of the lumbar support, a forward rotation couple is applied to the pelvis, which can simultaneously correct the excessive pelvic backward rotation caused by the imbalance of the sagittal plane of the spine.

[0012] Furthermore, in the present application, a spinal corrector with longitudinal force unloading function is provided with a connecting frame that can be adjusted up and down at the bottom of the lower connecting frame, the connecting frame includes a connecting rod slidably connected to the lower connecting frame and a plate body rotatably arranged at the lower end of the connecting rod, and the second connecting sleeve is connected to the plate body. As a preferred solution of the present application, it can adapt to users of different body shapes.

[0013] Furthermore, in the present application, a spinal corrector with longitudinal force unloading function, the power-assisting connecting member includes a first rod body rotatably connected to the lower connecting frame and a second rod body connected to the upper connecting frame, the second rod body is slidably adjustable and connected to the first rod body, and the cable is connected to the first rod body. As a preferred solution of the present application, based on the above structure, the power-assisting connecting member can adjust the length to adapt to users of different body shapes.

[0014] Further, in a spinal sagittal imbalance corrector in the present application, the power-assisting connector includes a first rod body hinged on the lower connecting frame and a second rod body connected to the upper connecting frame, the second rod body can be slidably adjusted and connected to the first rod body, and the cable is connected to the first rod body. As a preferred solution of the present application, based on the above structure, the power-assisting connector can adjust its length to adapt to users of different heights. Further, in a spinal sagittal imbalance corrector in the present application, the power-assisting connector and the lower connecting frame are connected to the rotating joint A; the cable pulls the power-assisting connector at position B on the power-assisting connector, and position B is on the side of the rotating joint A near the upper connecting frame; the waist support protrudes from the front end of the lower connecting frame along the x direction; in the preset correction posture, the positional relationship between the power-assisting connector and the lower connecting frame includes: in the x direction, position B is located at the rear side of the rotating joint A. As a preferred solution of the present application, in this state, the force of the power-assisting connector acting on the lower connecting frame at the rotating joint A can generate a thrust in the x direction, so that the front end of the waist support applies x-direction pressure to the user's back waist.

[0015] It can be seen from the above technical solution that the present invention has the following beneficial effects: The present invention provides a spinal corrector with a longitudinal force unloading function, in which a first connecting sleeve is connected to the thoracic section, a second connecting sleeve is connected to the waist or below the waist, a lumbar support supports the back waist, and a driver is used to pull the power-assist connecting piece in the rearward and downward direction through a cable to generate a backward pulling force at the upper connecting frame and a forward thrust at the lumbar support; different from the upper connecting frame and the power-assist connecting piece in a hinged form, in the present application, the power-assist connecting piece contacts the side wall of the sliding cavity through a limiting protrusion to pull the upper connecting frame, because the limiting protrusion is always separated from the end wall of the sliding cavity that transmits the longitudinal pulling force, so as to avoid the power-assist connecting piece from transmitting the downward pulling force of the cable to the upper connecting frame, thereby realizing longitudinal force unloading and avoiding the pulling force of the cable from generating a longitudinal compression force that is harmful to the spine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the use of a spinal correction device with a longitudinal force unloading function in an embodiment of the present application; Figure 2 It is a schematic structural diagram of a spinal correction device with longitudinal force unloading function in an embodiment of the present application; Figure 3 for Figure 2 A partial enlarged view of the area C in the middle circle; Figure 4 Schematic diagram of the structure of the lower connecting frame in the embodiment of the present application; Figure 5 It is a plane side view of a spinal corrector with a longitudinal force unloading function in an embodiment of the present application in a preset correction posture; In the figure: 1-upper connecting frame; 10-sliding cavity; 111-binding belt; 12-connecting seat; 13-upper plate; 14-lower plate; 2-lower connecting frame; 21-lumbar support; 22-second connecting sleeve; 24-guide wheel; 25-connecting frame; 251-connecting rod; 252-plate body; 26-pressing block; 261-locking screw; 3-power-assisting connecting piece; 31-first rod body; 311-roller; 32-second rod body; 41-cable; 51-reel; 6-driver; 71-tension sensor. DETAILED DESCRIPTION

[0017] Example 1 Combination Figures 1 to 3 A spinal correction device with longitudinal force unloading function is shown, comprising: An upper connecting frame 1 and a lower connecting frame 2 are arranged on the back side, the upper connecting frame 1 is provided with a first connecting sleeve, and the first connecting sleeve is connected to the position of the torso corresponding to the thoracic section; the lower connecting frame 2 is arranged below the upper connecting frame 1, a waist support 21 is arranged at the front end of the lower connecting frame 2, and a second connecting sleeve 22 is arranged on the lower connecting frame 2 corresponding to the lower side of the waist support 21; A power-assisting connecting member 3, which is connected between the upper connecting frame 1 and the lower connecting frame 2, and the power-assisting connecting member 3 is rotatably connected to the lower connecting frame 2; A cable 41, the cable 41 is connected to the power-assisting connecting member 3, and the cable 41 is used to pull the power-assisting connecting member 3 in a rearward and downward direction to generate a backward pulling force at the upper connecting frame 1 and a forward thrust at the lumbar support 21; A force unloading component is provided between the upper connecting frame 1 and the power-assisting connecting member 3, and the force unloading component includes a connecting seat 12 and a limiting protrusion respectively provided on the upper connecting frame 1 and the power-assisting connecting member 3. A sliding cavity 10 is provided on the connecting seat 12, and the sliding cavity 10 extends in the spacing direction between the upper connecting frame 1 and the lower connecting frame 2. The limiting protrusion is slidably provided in the sliding cavity 10, and the limiting protrusion is always separated from the end wall of the sliding cavity 10 for transmitting the longitudinal tension.

[0018] A spinal corrector with a longitudinal force unloading function in the present embodiment has the following principle: the first connecting sleeve is connected to the thoracic position, the second connecting sleeve 22 is connected to the waist or below the waist, the lumbar support 21 supports the back waist, and the driver 6 is used to pull the power-assisting connecting member 3 in the rearward and downward direction through the cable 41 to generate a backward pulling force at the upper connecting frame 1 and a forward thrust at the lumbar support 21; different from the upper connecting frame 1 and the power-assisting connecting member 3 which are connected in a rotating manner, in the present embodiment, the power-assisting connecting member 3 contacts the side wall of the sliding cavity 10 through a limiting protrusion to pull the upper connecting frame 1, because the limiting protrusion is always separated from the end wall of the sliding cavity 10 that transmits the longitudinal pulling force, so as to avoid the power-assisting connecting member 3 transmitting the downward pulling force of the cable 41 to the upper connecting frame 1, thereby realizing longitudinal force unloading and avoiding the pulling force of the cable 41 from generating a longitudinal compression force that is harmful to the spine.

[0019] It should be noted that the connection seat 12 and the limiting convex part respectively arranged on the upper connection frame 1 and the power-assisting connection member 3 should include two cases: case 1 or case 2: case 1 is that the connection seat 12 is arranged on the upper connection frame 1, and the limiting convex part is arranged on the power-assisting connection member 3, in which case the limiting convex part does not conflict with the bottom end of the slide cavity 10; case 2 is that the connection seat 12 is arranged on the power-assisting connection member 3, and the limiting convex part is arranged on the upper connection frame 1, in which case the upper end of the slide cavity 10 does not conflict with the power-assisting connection member 3, and this embodiment belongs to case 1. In this embodiment, the slide cavity 10 extends in an arc shape in the spacing direction of the upper connection frame 1 and the lower connection frame 2, and the arc-shaped middle section corresponding to the slide cavity 10 bulges toward the rear side.

[0020] Combination Figure 2 As shown, in this embodiment, the upper connecting frame 1 includes an upper plate 13 and a lower plate 14, the lower plate 14 is rotatably connected to the lower end of the upper plate 13, the first connecting sleeve is a strap 111, the strap 111 holds the user's shoulders from the front, and the ends of the strap 111 extend backward from the upper and lower sides of the shoulder and are respectively connected to the upper plate 13 and the lower plate 14. In this embodiment, the upper plate 13 and the lower plate 14 are rotatably connected to accommodate the pitching movement of the user's torso.

[0021] Combination Figure 3 As shown, in this embodiment, the limiting protrusion is arranged at one end of the power-assisting connecting member 3 near the upper connecting frame 1, and the limiting protrusion includes a pair of rollers 311 rotatably mounted on both sides of the power-assisting connecting member 3; the connecting seat 12 is fixed to the rear side of the upper plate 13, and the connecting seat 12 is arranged in pairs, and one end of the power-assisting connecting member 3 near the upper connecting frame 1 is arranged between a pair of connecting seats 12, and a pair of rollers 311 are respectively rolled in the sliding cavity 10 on both sides. The rollers 311 are arranged to be slidably connected with the connecting seat 12, so as to avoid the friction between the limiting protrusion and the sliding cavity 10 causing the longitudinal pressure. In this embodiment, the rollers 311 are connected to the power-assisting connecting member 3 by screws. The rollers 311 are ball bearings. Specifically, the upper plate 13 is extended horizontally, and the lower plate 14 is extended longitudinally. The lower end of the connecting seat 12 extends below the upper plate 13, and the lower plate 14 is rotatably connected with the connecting seat 12.

[0022] Combination Figure 2 As shown, in this embodiment, one end of the cable 41 away from the power-assisting connecting member 3 is connected to the rear side of the corresponding waist support 21 on the lower connecting frame 2, and the second connecting sleeve 22 is connected below the waist.

[0023] Because the end of the cable 41 away from the power-assisting connector 3 is connected to the rear side of the lower connecting frame 2 corresponding to the lumbar support 21 , the lower connecting frame 2 is able to generate a forward thrust on the lumbar support 21 by the reaction force of the cable 41 and the second connecting sleeve 22 .

[0024] Combination Figure 2 and Figure 4 As shown, in this embodiment, the lower connecting frame 2 is provided with a guide wheel 24, which is located at the rear side of the rotating joint between the power-assisting connecting member 3 and the lower connecting frame 2, and the cable 41 is pressed on the side of the guide wheel 24 away from the waist support 21. Based on the above structure, there are two beneficial effects, one is to ensure the inclination angle of the cable 41 relative to the power-assisting connecting member 3, so as to ensure that the cable 41 generates a backward pulling force on the power-assisting connecting member 3; the other is to generate a thrust force at the waist support 21 to push the waist forward.

[0025] Further, combined with Figure 2 and Figure 4As shown, in this embodiment, a driver 6 and a reel 51 connected to the driver 6 are also included, and the driver 6 is used to drive the reel 51 to rotate, and the cable 41 is connected to the reel 51. The driver 6 drives the reel 51 to rotate to achieve the tightening and loosening of the cable 41, thereby adjusting the tension on the power-assisting connecting member 3. In this embodiment, the driver 6 is a motor installed on the rear side of the lumbar support 21 corresponding to the lower connecting frame 2, and the reel 51 is installed on the motor output shaft. The reel 51, the cable 41 and the power-assisting connecting member 3 are located on the sagittal plane of the user. In other embodiments, the driver 6 can be a manually driven shaft, and the shaft and the reel 51 are coaxially connected with a worm and a turbine that mesh with each other to achieve self-locking of the reel 51.

[0026] Further, combined with Figure 1 As shown, in this embodiment, the second connecting sleeve 22 is connected to the hip. With the position where the front end of the lumbar support 21 contacts the back waist as the fulcrum, when the cable 41 acts on the lower connecting frame 2, a moment of pulling the hip backward is generated on the second connecting sleeve 22, and combined with the forward thrust of the lumbar support 21, a forward rotation couple is applied to the pelvis, which can simultaneously correct the pelvic backward rotation caused by the imbalance of the sagittal plane of the spine.

[0027] Combination Figure 2 and Figure 4 As shown, in this embodiment, a connecting frame 25 that can be adjusted up and down is provided at the bottom of the lower connecting frame 2, and the connecting frame 25 includes a connecting rod 251 that is slidably connected to the lower connecting frame 2 and a plate body 252 that is rotatably arranged at the lower end of the connecting rod 251, and the second connecting sleeve 22 is connected to the plate body 252. It can adapt to users of different heights. Specifically, the connecting rod 251 is clamped between a pair of pressing blocks 26 on the lower connecting frame 2, and a locking screw 261 is connected to the pressing block 26, and the sliding adjustment state of the connecting rod 251 is switched by loosening and tightening the locking screw 261.

[0028] Combination Figure 2 As shown, in this embodiment, the power-assisting connecting member 3 includes a first rod body 31 rotatably connected to the lower connecting frame 2 and a second rod body 32 connected to the upper connecting frame 1, the second rod body 32 is slidably connected to the first rod body 31, and the cable 41 is connected to the first rod body 31. Based on the above structure, the power-assisting connecting member 3 can be adjusted in length to accommodate users of different heights. In this embodiment, the first rod body 31 is a tubular body sleeved on the second rod body 32, and the first rod body 31 and the second rod body 32 are axially locked by a locking pin.

[0029] In this embodiment, the power-assisting connecting member 3 and the lower connecting frame 2 are connected by a universal joint. Different from a pivot connection, it ensures the freedom of the wearer's waist in the frontal plane and can adapt to the lateral and lateral rotation movement of the waist. Specifically, the universal joint is a fisheye bearing.

[0030] In order to ensure that the waist support 21 generates sufficient forward thrust, in this embodiment, Figure 5 As shown, the power-assisting connector 3 and the lower connecting frame 2 are connected to the rotating joint A; the cable 41 pulls the power-assisting connector 3 at position B on the power-assisting connector 3, and position B is on the side of the rotating joint A near the upper connecting frame 1; the lumbar support 21 protrudes from the front end of the lower connecting frame 2 along the x direction; in the preset correction posture, the positional relationship between the power-assisting connector 3 and the lower connecting frame 2 includes: in the x direction, position B is located at the rear side of the rotating joint A. In this state, the force of the power-assisting connector 3 acting on the lower connecting frame 2 at the rotating joint A can generate a thrust in the x direction, so that the front end of the lumbar support 21 applies x-direction pressure to the user's lower back. Specifically, the preset correction posture includes a corresponding back straightening state.

[0031] Example 2 Based on Example 1, in this example, Figure 2 As shown, it also includes a tension sensor 71 connected between the cable 41 and the power-assisting connecting member 3, a controller (not shown) and a posture detection sensor (not shown) connected to the body trunk. The controller is connected to the driver 6, the tension sensor 71 and the posture detection sensor for communication. The tension sensor 71 is used to detect the tension of the cable 41 on the power-assisting connecting member 3, input a preset tension to the controller, and detect the tension value of the cable 41 on the power-assisting connecting member 3 according to the tension sensor 71. The controller is used to control the driver 6 to pull the power-assisting connecting member 3 within a preset range to ensure the stability of the tension. The posture detection sensor is used to detect the posture parameters of the body trunk in the sagittal plane. The controller applies a compensating tension p on the basis of controlling the driver 6 to apply a constant tension P to the power-assisting connecting member 3 according to the posture parameters input by the posture detection sensor. Then, the total tension applied by the driver 6 to the power-assisting connecting member 3 is F=P+p. In order to compensate for the gravity torque of the upper body of the user in real time, the influence of gravity on the user during the forward leaning of the trunk, especially during bending, is balanced. Specifically, p=asinθ, where a is a preset parameter, the value of a corresponds to the weight of the user's trunk, and the user can adjust the value of a through the input terminal to adjust the comfort of eliminating the self-weight to meet the user's personalized needs, and θ is the forward tilt angle of the trunk detected by the posture detection sensor. P and a can be set through the input device before use to meet the user's needs for different assistance. In this embodiment, the value of P can also be adjusted through the input terminal.

[0032] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A spinal corrector with longitudinal force unloading function, characterized in that: include: An upper connecting frame (1) and a lower connecting frame (2) are arranged on the back side, the upper connecting frame (1) being provided with a first connecting sleeve, the first connecting sleeve being connected to a position of the trunk corresponding to the thoracic section; the lower connecting frame (2) being arranged below the upper connecting frame (1), a waist support (21) being provided at the front end of the lower connecting frame (2), and a second connecting sleeve (22) being provided on the lower connecting frame (2) corresponding to the lower side of the waist support (21); A power-assisting connecting member (3), the power-assisting connecting member (3) being connected between the upper connecting frame (1) and the lower connecting frame (2), the power-assisting connecting member (3) being rotatably connected to the lower connecting frame (2); A pull cable (41), the pull cable (41) being connected to the power-assisting connecting member (3), the pull cable (41) being used to pull the power-assisting connecting member (3) in a rearward and downward direction, so as to generate a backward pulling force at the upper connecting frame (1) and a forward thrust at the waist support (21); A force unloading component is provided between the upper connecting frame (1) and the power-assisting connecting member (3), the force unloading component comprising a connecting seat (12) and a limiting convex portion respectively provided on the upper connecting frame (1) and the power-assisting connecting member (3), a sliding cavity (10) is provided on the connecting seat (12), the sliding cavity (10) is extended in the spacing direction between the upper connecting frame (1) and the lower connecting frame (2), the limiting convex portion is slidably provided in the sliding cavity (10), and the limiting convex portion is always separated from the end wall of the sliding cavity (10) for transmitting the longitudinal tension.

2. A spinal correction device with longitudinal force unloading function according to claim 1, characterized in that: The upper connecting frame (1) comprises an upper plate (13) and a lower plate (14); the lower plate (14) is rotatably connected to the lower end of the upper plate (13); the first connecting sleeve is a strap (111); the strap (111) holds the shoulders of the user from the front; the ends of the strap (111) extend backwards from the upper and lower sides of the shoulders and are respectively connected to the upper plate (13) and the lower plate (14).

3. A spinal correction device with longitudinal force unloading function according to claim 2, characterized in that: The limiting convex portion is arranged at one end of the power-assisting connecting member (3) close to the upper connecting frame (1), and the limiting convex portion comprises a pair of rollers (311) rotatably mounted on both sides of the power-assisting connecting member (3); The connecting seat (12) is fixed to the rear side of the upper plate (13), the connecting seats (12) are arranged in pairs, the auxiliary connecting member (3) is arranged between a pair of connecting seats (12) at one end close to the upper connecting frame (1), and the pair of rollers (311) are respectively rolled in the sliding cavities (10) on both sides.

4. A spinal corrector with longitudinal force unloading function according to claim 1, characterized in that: One end of the pull cable (41) away from the power-assisting connecting piece (3) is connected to the rear side of the corresponding waist support (21) on the lower connecting frame (2), and the second connecting sleeve (22) is connected below the waist.

5. The spinal corrector with longitudinal force unloading function according to claim 1, characterized in that: The lower connecting frame (2) is provided with a guide wheel (24), the guide wheel (24) is located at the rear side of the rotating joint between the power-assisting connecting piece (3) and the lower connecting frame (2), and the pull cable (41) is pressed onto the side of the guide wheel (24) away from the waist support (21).

6. A spinal correction device with longitudinal force unloading function according to claim 1, characterized in that: It also comprises a driver (6) and a wire wheel (51) drivingly connected to the driver (6), wherein the driver (6) is used to drive the wire wheel (51) to rotate, and the cable (41) is connected to the wire wheel (51).

7. A spinal correction device with longitudinal force unloading function according to claim 4, characterized in that: The second connecting sleeve (22) is connected to the hip.

8. The spinal corrector with longitudinal force unloading function according to claim 1, characterized in that: A connecting frame (25) which can be adjusted up and down is provided at the bottom of the lower connecting frame (2), the connecting frame (25) comprising a connecting rod (251) slidably connected to the lower connecting frame (2) and a plate body (252) rotatably arranged at the lower end of the connecting rod (251), and the second connecting sleeve (22) is connected to the plate body (252).

9. The spinal corrector with longitudinal force unloading function according to claim 1, characterized in that: The power-assist connecting member (3) comprises a first rod body (31) rotatably connected to the lower connecting frame (2) and a second rod body (32) connected to the upper connecting frame (1); the second rod body (32) is slidably adjustable and connected to the first rod body (31); and a cable (41) is connected to the first rod body (31).

10. The spinal corrector with longitudinal force unloading function according to claim 1, characterized in that: The power-assisting connecting member (3) and the lower connecting frame (2) are connected to the rotating joint A; the pulling cable (41) pulls the power-assisting connecting member (3) at position B on the power-assisting connecting member (3), and position B is on a side of the rotating joint A close to the upper connecting frame (1); The waist support (21) protrudes from the front end of the lower connecting frame (2) along the x direction; In a preset correction posture, the positional relationship between the power-assisting connecting member (3) and the lower connecting frame (2) includes: in the x-direction, position B is located at the rear side of the rotating joint A.

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