Vertebral osteoporotic fracture distraction device

Abstract

The invention discloses a vertebral osteoporotic fracture distraction device, and relates to the field of medical equipment, the vertebral osteoporotic fracture distraction device comprises a holding device main body, the bottom of the holding device main body is provided with a limiting sleeve opening, the top of the holding device main body is provided with a limiting clamping block, and the holding device main body is of a hollow structure; an extension rod is arranged in the center of one end of the holding device body, a second opening matched with the extension rod is formed in the holding device body, the second opening is communicated with the interior of the extension rod, a mounting rod is arranged in the extension rod, one end of the mounting rod extends out of the extension rod, and the end, outside the extension rod, of the mounting rod is connected with an expansion device. The thumb rubs the friction belt to drive the transmission gear and the gear set, so that the transmission plate extrudes the supporting metal sheet to deform, the stirring sheet is pressed to trigger the generator to adjust the angle of the mounting rod, the supporting degree and angle can be automatically adjusted, the supporting metal sheet is wide in coverage, the supporting effect is improved, and the fracture requirement is met.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically a device for relieving osteoporotic vertebral fractures. Background Technology

[0002] With the increasing aging of the population, the incidence of osteoporotic vertebral fractures is rising year by year. These fractures mostly occur in the elderly, and patients often experience severe back pain and loss of vertebral height, significantly impacting their quality of life. Conservative treatment requires prolonged bed rest, which can easily lead to complications such as pulmonary infections and deep vein thrombosis. Therefore, surgical treatment has become the mainstream option. During surgery, the vertebral body distraction device is a core instrument for restoring vertebral height and creating space for subsequent bone cement filling. Its performance directly affects the surgical outcome and postoperative recovery, making a safe and efficient distraction device urgently needed in clinical practice.

[0003] Currently, various vertebral body distraction devices have been put into clinical use, mainly divided into two categories: manual drive and electric assisted drive. These devices can basically achieve the distraction and support function of vertebral body fracture sites, and to a certain extent solve the problem of difficult vertebral body reduction in traditional surgery. Most devices are inserted through a puncture channel and rely on mechanical structure to complete the distraction action. They have been used in a large number of surgeries. However, different brands of devices differ in terms of ease of operation and flexibility in adapting to different vertebral body shapes. Overall, the main goal is still to meet the basic distraction requirements.

[0004] The existing vertebral body expansion is achieved by doctors through PKP (percutaneous kyphoplasty). A small incision of about 5-6 mm is made in the patient's back. Under the guidance of a C-arm X-ray machine, a special puncture needle is inserted through the skin into the vertebral body to place an expandable balloon. The balloon is expanded, and fluoroscopy is used until the vertebral body is expanded to a satisfactory degree. The compressed vertebral body is then repositioned.

[0005] However, existing technologies are inconvenient to adjust the expansion angle, as they are mostly designed with a fixed angle or require additional tools for adjustment, and cannot adjust the angle accurately and autonomously according to the specific situation of the fracture site. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a device for opening up osteoporotic vertebral fractures, so as to solve the technical problems of existing devices having difficulty in adjusting the support angle and large support blind spots.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for dispersing osteoporotic vertebral fractures, comprising a gripping device body, a limiting sleeve at the bottom of the gripping device body, a limiting block at the top of the gripping device body, a hollow internal structure, an extension rod at the center of one end of the gripping device body, a second opening on the gripping device body corresponding to the extension rod, the second opening communicating with the interior of the extension rod, an installation rod inside the extension rod, one end of the installation rod extending outside the extension rod, and an expansion device connected to the end of the installation rod outside the extension rod; a first opening at the center of the other end of the gripping device body corresponding to the second opening, a positioning and rotating device disposed within the first opening, and the other end of the installation rod connected to the positioning and rotating device. Next, the positioning and rotating device includes a limiting member disposed within a first opening. A control motor is disposed at the end of the limiting member away from the second opening. The end of the mounting rod near the first opening is connected to a mounting plate. A pair of electrode rods are symmetrically disposed on the end of the mounting plate near the first opening. Electrode holes are provided on the limiting member to cooperate with the electrode rods. A pair of driving devices are disposed on the mounting rod in cooperation with the expansion device. The pair of driving devices are symmetrically disposed vertically. Each driving device includes a transmission plate, which is slidably disposed between the transmission plate and the mounting rod. A plurality of supporting metal plates are connected to the end of the transmission plate away from the mounting plate. A connecting plate is disposed at the other end of the plurality of supporting metal plates. A pair of connecting side plates are symmetrically disposed on both sides of the mounting rod in cooperation with the connecting plate. The connecting side plates and the connecting plate are fixedly connected to the mounting rod.

[0008] By adopting the above technical solution, efficient and stable gripping of the device can be achieved, while quick replacement of parts can be realized, and puncture and expansion support can be achieved in one go.

[0009] The invention is further configured such that a gear set is provided inside the main body of the gripping device in conjunction with a transmission plate, the output end of the gear set meshing with the transmission plate, a mounting slot is provided on the top of the main body of the gripping device, a friction belt is provided in the mounting slot, a pair of transmission gears are provided at both ends of the friction belt inside the main body of the gripping device, the transmission gears meshing with the gear set, and a fixing rod is provided on the inner wall of the main body of the gripping device in conjunction with the gear set and the transmission gears, the gear set and the transmission gears rotating through the fixing rod.

[0010] By adopting the above technical solution, the transmission plate is moved, thereby expanding the supporting metal sheet.

[0011] The invention is further configured such that a fixing device is provided inside the main body of the gripping device near the second opening, the fixing device including a trigger plate, one end of the trigger plate extending outside the main body of the gripping device, the trigger plate being rotatably disposed with the main body of the gripping device, a locking plate being provided at a certain angle at one end of the trigger plate inside the main body of the gripping device, a compression airbag being provided on the inner wall of the main body of the gripping device in conjunction with the locking plate, a groove being opened at the top of the second opening, a limit block being movably disposed in the groove, an air supply pipe being provided inside the main body of the gripping device in conjunction with the groove at the top of the second opening, one end of the air supply pipe communicating with the groove, and the other end of the air supply pipe communicating with the compression airbag.

[0012] By adopting the above technical solution, the components can be further secured, enabling highly stable operation when required.

[0013] The invention is further configured such that a paddle is provided on one side of the gripping device body, the paddle is rotatably connected to the gripping device body, a trigger airbag is provided on the gripping device body in conjunction with the paddle, the trigger airbag is in communication with the interior of the gripping device body, a second electrode plate is provided on the side of the trigger airbag away from the gripping device body, a return spring is provided inside the trigger airbag, a partition is provided inside the gripping device body in conjunction with the return spring, a first electrode plate is provided on the partition in conjunction with the second electrode plate, and the first electrode plate is connected to the control motor circuit.

[0014] By adopting the above technical solution, flexible control of the control motor can be achieved, thereby controlling the rotation of the mounting rod;

[0015] The present invention is further configured such that a connecting flexible plate is connected between the plurality of supporting metal sheets.

[0016] By adopting the above technical solution, the supporting area of ​​the supporting metal sheet can be increased;

[0017] The present invention is further configured such that a pair of positioning rods are provided in the mounting slot in conjunction with the friction belt.

[0018] By adopting the above technical solution, the effect of increasing the contact feel of the friction strip can be achieved;

[0019] The present invention is further configured such that a top pressure spring is provided at the top of the main body of the gripping device in conjunction with the trigger plate.

[0020] By adopting the above technical solution, the effect of resetting the trigger plate can be achieved;

[0021] The invention is further configured such that a limiting groove is formed at one end of the mounting rod near the connecting plate, and a pair of limiting plates are provided in the limiting groove in conjunction with a pair of transmission plates, the limiting plates being connected to the end of the transmission plates near the connecting plate.

[0022] By adopting the above technical solution, the effect of guiding the transmission plate can be achieved;

[0023] The present invention is further configured such that a puncture needle is disposed inside the extension rod, one end of the puncture needle extends outside the extension rod, and the other end of the puncture needle is connected to the positioning and rotating device;

[0024] By adopting the above technical solution, skin puncture is achieved, which allows the subsequent retractor device to successfully enter the vertebra.

[0025] In summary, the present invention has the following main beneficial effects:

[0026] 1. This invention uses the thumb to rub the friction belt to drive the transmission gear and gear set, causing the transmission plate to compress and deform the supporting metal sheet. Pressing the lever triggers the motor to adjust the angle of the mounting rod, allowing for independent adjustment of the support level and angle. The supporting metal sheet has a wide coverage, improving the support effect and adapting to fracture needs.

[0027] 2. In this invention, the limiting sleeve of the main body of the finger-piercing gripping device allows the index finger to grip the fixed area. Pressing the trigger plate causes the clamping plate to compress the airbag, and the gas-top limiting block fixes the puncture needle and the mounting rod, achieving stable gripping, firm component fixation, avoiding operational shaking, and ensuring surgical precision. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is another structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the interior of the gripping device of the present invention;

[0031] Figure 4 This is a bottom view of the main body of the gripping device of the present invention;

[0032] Figure 5 This is a side view of the internal structure of the main body of the gripping device of the present invention;

[0033] Figure 6 This is a schematic diagram of the transmission plate installation according to the present invention;

[0034] Figure 7 This is a partial exploded view of the structure of the present invention;

[0035] Figure 8 For the present invention Figure 7 Another perspective illustration;

[0036] Figure 9 This is a schematic diagram of the main structure of the gripping device of the present invention;

[0037] Figure 10This is a schematic diagram of the partition installation structure of the present invention;

[0038] Figure 11 This is a schematic diagram of the exploded structure of the expansion device of the present invention;

[0039] Figure 12 For the present invention Figure 10 Enlarged structural diagram at point A in the middle;

[0040] Figure 13 This is a schematic diagram of the supporting metal sheet structure of the present invention.

[0041] In the diagram: 1. Main body of the gripping device; 2. Limiting sleeve; 3. Limiting block; 4. Friction belt; 5. Trigger plate; 6. Paddle; 7. Extension rod; 8. Puncture needle; 9. Expansion device; 10. Limiting component; 11. Control motor; 12. Gear set; 13. Mounting slot; 14. Clamping plate; 15. Mounting plate; 16. Electrode rod; 17. Electrode hole; 18. Connecting side plate; 19. Connecting plate; 20. First opening; 21. Second opening; 22. Supporting metal sheet; 23. Connecting flexible plate; 24. Limiting plate; 25. Limiting block; 26. Limiting groove; 27. Mounting rod; 28. Transmission plate; 29. ​​Partition plate; 30. First pole plate; 31. Return spring; 32. Second pole plate; 33. Transmission gear; 34. Fixing rod; 35. Positioning rod; 36. Top pressure spring; 37. Compression airbag; 38. Air supply pipe; 39. Trigger airbag. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] The embodiments of the present invention will now be described.

[0044] A device for relieving osteoporotic vertebral fractures, such as Figure 1-2 As shown, the main body of the device mainly includes a gripping device body 1. The bottom of the gripping device body 1 has a limiting sleeve 2, and the top of the gripping device body 1 is provided with a limiting block 3. The limiting block 3 and the gripping device body 1 form a recessed fixed area. Taking the right hand as an example, the operator's middle finger passes through the limiting sleeve 2, and the index finger is locked in the fixed area formed by the gripping device body 1 and the limiting block 3. The user's palm, middle finger and index finger work together to hold the gripping device body 1 stably. On the basis of this stable grip;

[0045] refer to Figure 1 and Figure 2The gripping device body 1 has a hollow structure. An extension rod 7 is located at the center of one end of the gripping device body 1. A second opening 21 is provided on the gripping device body 1 to cooperate with the extension rod 7. The second opening 21 communicates with the interior of the extension rod 7. An installation rod 27 is provided inside the extension rod 7. One end of the installation rod 27 extends outside the extension rod 7 and is connected to the expansion device 9. The other end of the installation rod 27 is connected to the positioning and rotating device. A first opening 20 is provided at the center of the other end of the gripping device body 1 to cooperate with the second opening 21. A positioning and rotating device is provided inside the first opening 20. At the same time, a puncture needle 8 is provided inside the extension rod 7. One end of the puncture needle 8 extends outside the extension rod 7 and the other end is connected to the positioning and rotating device. The two are not in conflict, but are different core tools used in two different steps. The puncture needle 8 is used to open a treatment channel at a specified angle. Then, the expansion device 9 is inserted into the fractured vertebra that needs to be opened through the installation rod 27.

[0046] For details, please refer to Figure 7 - Figure 10 The positioning and rotating device includes a limiting member 10, which is disposed in the first opening 20. The limiting member 10 and the first opening 20 are fixed by friction. The fixing is achieved by conventional damping friction and does not require strong locking. The component can be removed and replaced later. In addition, in the structural design of the holding device body 1 in this application, when holding the device, the thumb and forefinger will press against the limiting member 10, thereby ensuring the stability of the mounting rod 27 and the puncture needle 8 that are limited by the limiting member 10 during operation.

[0047] Furthermore, a turntable 40 is provided at the other end of the second opening 21. The turntable 40 is rotatably connected to the control motor 11. The end of the mounting rod 27 near the first opening 20 is connected to the mounting plate 15. A pair of electrode rods 16 are symmetrically arranged on the end of the mounting plate 15 near the first opening 20. Electrode holes 17 are provided on the turntable 40 to cooperate with the electrode rods 16. Since the puncture needle 8 does not require any function other than the support provided by the limiting member 10, when using the puncture needle 8, the corresponding motor rod 16 and electrode hole 17 can be replaced with corresponding replacement parts, such as plastic parts of the same shape. When the mounting rod 27 is used, all functions work normally. The turntable 40 is driven to rotate by the control motor 11, which in turn drives the electrode hole 17 to rotate, thereby synchronously driving the mounting plate 15 to rotate, thereby driving the mounting rod 27 and the expansion device 9 at its other end to rotate synchronously. In actual application, the angle of the expansion device 9 in the vertebra is controlled by the drive of the control motor 11, and can be adjusted autonomously according to the actual opening angle requirements.

[0048] For details, please refer to Figure 3 , Figure 4 , Figure 6 and Figure 11 The mounting rod 27 is equipped with a pair of driving devices that cooperate with the expansion device 9. The pair of driving devices are symmetrically arranged vertically. Each driving device includes a transmission plate 28, which is slidably disposed between the transmission plate 28 and the mounting rod 27. One end of the transmission plate 28 away from the mounting plate 15 is connected to several supporting metal plates 22, which together form the main body of the expansion device 9. The other end of the supporting metal plates 22 is provided with a connecting plate 19. A pair of connecting side plates 18 are symmetrically arranged on both sides of the mounting rod 27 in cooperation with the connecting plate 19. The connecting side plates 18 and the connecting plate 19 are fixedly connected to the mounting rod 27. The mounting rod 27 is equipped with a pair of driving devices that cooperate with the expansion device 9. A limiting groove 26 is formed at one end of the mounting rod 27 near the connecting plate 19. A pair of limiting plates 24 are provided within the limiting groove 26, cooperating with a pair of transmission plates 28. The limiting plates 24 are connected to the ends of the transmission plates 28 near the connecting plate 19. With this arrangement, by controlling the movement of the transmission plates 28, the transmission plates 28 can be compressed against the supporting metal plates 22, causing them to deform and thus supporting the vertebral fracture site. The movement of the limiting plates 24 within the limiting groove 26, driven by a pair of driving devices, deforms the two sets of supporting metal plates 22. Correspondingly, the gripping device body 1, in conjunction with the transmission plates 28, is equipped with... A gear set 12 is provided, the output end of which meshes with a transmission plate 28. A mounting slot 13 is provided on the top of the gripping device body 1, and a friction belt 4 is provided within the mounting slot 13. A pair of transmission gears 33 are provided inside the gripping device body 1 at both ends of the friction belt 4, and the transmission gears 33 mesh with the gear set 12. A fixing rod 34 is provided on the inner wall of the gripping device body 1 to cooperate with the gear set 12 and the transmission gears 33. The gear set 12 and the transmission gears 33 rotate through the fixing rod 34. With this configuration, in actual use, the user grips the device while their thumb is free and... Directly above the friction belt 4, the thumb rubs against the friction belt 4, causing the transmission gear 33 to rotate, which in turn drives the gear set 12 to rotate. When the gear set 12 rotates, it drives the transmission plate 28 on the mounting rod 27 to move. When the transmission plate 28 moves, it can achieve the effect of compressing and deforming the supporting metal sheet 22, thus supporting the fractured vertebra. On this basis, the extension rod 7 driven by the front-mounted control motor 11 rotates. No matter how the control motor 11 controls the extension rod 7 to rotate, the expansion effect of the expansion device 9 can be guaranteed. In order to ensure the two independent expansion structures and reduce the drive blind zone, refer to Figure 6 A pair of transmission plates 28 cover an area of ​​more than 70%;

[0049] Based on this, a fixing device is provided inside the gripping device body 1 near the second opening 21. The fixing device includes a trigger plate 5, one end of which extends outside the gripping device body 1. The trigger plate 5 is rotatably mounted with the gripping device body 1. A locking plate 14 is provided at a certain angle at one end of the trigger plate 5 inside the gripping device body 1. A compression airbag 37 is provided on the inner wall of the gripping device body 1 in conjunction with the locking plate 14. A groove is opened at the top of the second opening 21, and a limit block 25 is movably mounted in the groove. An air supply pipe 38 is provided inside the gripping device body 1 in conjunction with the groove at the top of the second opening 21. One end of the air supply pipe 38 communicates with the groove. The other end of 38 is connected to the compression airbag 37. With this setting, in actual use, when the puncture needle 8 or the mounting rod 27 passes through the second opening 21, the trigger plate 5 is pressed to rotate it, thereby causing the clamping plate 14 to press down, thereby squeezing the compression airbag 37, thereby causing the gas in it to enter the groove, thereby pushing the limiting block 25 downward, thereby limiting the puncture needle 8 or the mounting rod 27, ensuring the stability of the surgical operation. It is worth mentioning that the fixation here cooperates with the front limiting piece 10 and the first opening 20. When the operator subjectively judges that a more stable fixation effect is needed, the puncture needle 8 or the mounting rod 27 can be more firmly fixed by pressing the trigger piece 5.

[0050] Furthermore, refer to Figure 10 and Figure 12 A lever 6 is provided on one side of the gripping device body 1. The lever 6 is rotatably connected to the gripping device body 1. A trigger airbag 39 is provided on the gripping device body 1 in conjunction with the lever 6. The trigger airbag 39 is connected to the inside of the gripping device body 1. A second electrode plate 32 is provided on the side of the trigger airbag 39 away from the gripping device body 1. A return spring 31 is provided inside the trigger airbag 39. A partition 29 is provided inside the gripping device body 1 in conjunction with the return spring 31. A first electrode plate 30 is provided on the partition 29 in conjunction with the second electrode plate 32. The first electrode plate 30 is connected to the control motor 11 in the circuit. With this configuration and the structure of the gripping device body 1, when it is necessary to control the rotation of the mounting rod 27, the device is clamped by the middle and index fingers with the web of the thumb. At this time, the lever 6 is pressed by the thumb, which squeezes the trigger airbag 39, thereby causing the first electrode plate 30 and the second electrode plate 32 to contact, thereby triggering the circuit and causing the control motor 11 to rotate, thus achieving precise control of the rotation of the mounting rod 27.

[0051] refer to Figure 13 A connecting flexible plate 23 is connected between several of the supporting metal sheets 22. The connecting flexible plate 23 fills the space between the supporting metal sheets 22 and improves the support effect.

[0052] refer to Figure 5The mounting slot 13 is equipped with a pair of positioning rods 35 that cooperate with the friction belt 4. The positioning rods 35 provide an additional pressing contact area for the friction belt 4, thereby ensuring the feel during friction rotation.

[0053] refer to Figure 5 The gripping device body 1 has a top pressure spring 36 installed at the top of the trigger plate 5. When the trigger 5 is released, the trigger 5 can be pulled back to the preset position by the action of the top pressure spring 36.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A device for relieving osteoporotic vertebral fractures, comprising a gripping device body (1), characterized in that: The gripping device body (1) has a limiting sleeve (2) at the bottom and a limiting block (3) at the top. The gripping device body (1) has a hollow structure. An extension rod (7) is provided at the center of one end of the gripping device body (1). A second opening (21) is provided on the gripping device body (1) to cooperate with the extension rod (7). The second opening (21) communicates with the inside of the extension rod (7). An installation rod (27) is provided inside the extension rod (7). One end of the installation rod (27) extends to the extension rod. Outside the extension rod (7), the mounting rod (27) is connected to the expansion device (9) at one end outside the extension rod (7). The other end of the gripping device body (1) has a first opening (20) at its center position, which is aligned with the second opening (21). A positioning and rotating device is provided in the first opening (20). The other end of the mounting rod (27) is connected to the positioning and rotating device. The positioning and rotating device includes a limiting member (10), which is located in the first opening (20). The end of the limiting member (10) away from the second opening (21) is provided with... There is a control motor (11), and a turntable (40) is provided at the other end of the second opening (21). The turntable (40) is rotatably connected to the control motor (11). The end of the mounting rod (27) near the first opening (20) is connected to the mounting plate (15). A pair of electrode rods (16) are symmetrically arranged on the end of the mounting plate (15) near the first opening (20). Electrode holes (17) are opened on the turntable (40) to cooperate with the electrode rods (16). A pair of driving devices are provided on the mounting rod (27) to cooperate with the expansion device (9). A pair of drive devices are symmetrically arranged vertically. The drive device includes a transmission plate (28). The transmission plate (28) is slidably arranged with the mounting rod (27). A plurality of supporting metal plates (22) are connected to one end of the transmission plate (28) away from the mounting plate (15). A connecting plate (19) is provided at the other end of the plurality of supporting metal plates (22). A pair of connecting side plates (18) are symmetrically arranged on both sides of the mounting rod (27) in cooperation with the connecting plate (19). The connecting side plates (18) and the connecting plate (19) are fixedly connected to the mounting rod (27).

2. The vertebral osteoporotic fracture dispersing device according to claim 1, characterized in that: The gripping device body (1) is equipped with a gear set (12) in conjunction with the transmission plate (28). The output end of the gear set (12) meshes with the transmission plate (28). The gripping device body (1) has an installation slot (13) on its top. A friction belt (4) is provided in the installation slot (13). A pair of transmission gears (33) are provided at both ends of the friction belt (4) in the gripping device body (1). The transmission gears (33) mesh with the gear set (12). A fixing rod (34) is provided on the inner wall of the gripping device body (1) in conjunction with the gear set (12) and the transmission gears (33). The gear set (12) and the transmission gears (33) rotate through the fixing rod (34).

3. The vertebral osteoporotic fracture dispersing device according to claim 1, characterized in that: A fixing device is provided inside the main body (1) of the gripping device near the second opening (21). The fixing device includes a trigger plate (5). One end of the trigger plate (5) extends outside the main body (1) of the gripping device. The trigger plate (5) is rotatably set with the main body (1) of the gripping device. A locking plate (14) is set at a certain angle at one end of the trigger plate (5) inside the main body (1) of the gripping device. A compression airbag (37) is provided on the inner wall of the main body (1) in cooperation with the locking plate (14). A groove is opened at the top of the second opening (21). A limit block (25) is movably set in the groove. An air supply pipe (38) is provided inside the main body (1) in cooperation with the groove opened at the top of the second opening (21). One end of the air supply pipe (38) is connected to the groove. The other end of the air supply pipe (38) is connected to the compression airbag (37).

4. The vertebral osteoporotic fracture dispersing device according to claim 1, characterized in that: A paddle (6) is provided on one side of the gripping device body (1). The paddle (6) is rotatably connected to the gripping device body (1). A trigger airbag (39) is provided on the gripping device body (1) in conjunction with the paddle (6). The trigger airbag (39) is connected to the inside of the gripping device body (1). A second electrode plate (32) is provided on the side of the trigger airbag (39) away from the gripping device body (1). A return spring (31) is provided inside the trigger airbag (39). A partition plate (29) is provided inside the gripping device body (1) in conjunction with the return spring (31). A first electrode plate (30) is provided on the partition plate (29) in conjunction with the second electrode plate (32). The first electrode plate (30) is connected to the control motor (11) circuit.

5. The vertebral osteoporotic fracture dispersing device according to claim 1, characterized in that: A connecting flexible plate (23) is connected between several of the supporting metal sheets (22).

6. The vertebral osteoporotic fracture dispersing device according to claim 2, characterized in that: A pair of positioning rods (35) are provided in the mounting slot (13) to cooperate with the friction belt (4).

7. The vertebral osteoporotic fracture dispersing device according to claim 3, characterized in that: A top pressure spring (36) is provided on the top of the gripping device body (1) in conjunction with the trigger plate (5).

8. A device for spreading osteoporotic vertebral fractures according to claim 3, characterized in that: The mounting rod (27) has a limiting groove (26) at one end near the connecting plate (19). A pair of limiting plates (24) are provided in the limiting groove (26) in conjunction with a pair of transmission plates (28). The limiting plates (24) are connected to the end of the transmission plates (28) near the connecting plate (19).

9. A device for spreading osteoporotic vertebral fractures according to claim 3, characterized in that: A puncture needle (8) is provided inside the extension rod (7). One end of the puncture needle (8) extends outside the extension rod (7), and the other end of the puncture needle (8) is connected to the positioning and rotating device.

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