Orthopedic splint mounting and fastening device

Abstract

The invention relates to the field of affected limb fracture splint equipment, in particular to an orthopedic splint mounting and fastening device, and provides the orthopedic splint mounting and fastening device aiming at the problems in the prior art, the orthopedic splint mounting and fastening device comprises two clamping suites which are connected with each other and can adjust the distance and the connecting angle, and the clamping suites are used for clamping and fixing an affected limb; the clamping suite comprises two sets of clamping units which are in butt joint with each other and can be detached, the clamping units are of an arc-shaped structure, the diameter of each clamping unit can be changed, gradual adjustment and real-time locking of clamping force can be achieved, data are fed back by combining a pressure sensor on a clamping pad, medical staff can accurately control the magnitude of fastening force, and the clamping force can be accurately adjusted. The pressure is ensured to be uniformly distributed on the surface of an affected limb, complications such as skin damage and blood circulation disorder caused by overlarge local pressure are effectively avoided, and the treatment safety is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of splint equipment for fractured limbs, and in particular to an orthopedic splint installation and fastening device. Background Technology

[0002] In orthopedic clinical treatment, fixation after fracture reduction is a crucial step in ensuring healing. Splint fixation is widely used in the treatment of limb fractures due to its advantages such as ease of operation and minimal limb damage. However, existing orthopedic splints still have many problems that urgently need to be solved in practical use: Traditional orthopedic splints mainly rely on medical staff to manually wrap bandages to achieve fastening. The amount of tightening force depends entirely on personal experience, which can easily lead to excessive local pressure or uneven distribution, resulting in skin damage and impaired blood circulation in the affected limb. In severe cases, it may cause complications such as tissue necrosis. At the same time, manual wrapping is inefficient and cannot be completed quickly in emergency treatment or mass casualty handling scenarios, which may delay the best treatment time. For example, patent application number 201710125973.1 discloses a medical orthopedic splint device that can quickly wrap a bandage around the affected limb using a first and second clamping block. However, existing technology lacks a flexible adjustment mechanism. Patients often experience limb swelling after a fracture, and the degree of swelling changes dynamically with the treatment process. Traditional splints cannot adapt to this change, requiring repeated disassembly, reassembly, and even replacement with splints of different sizes. This is not only cumbersome but may also interfere with the fracture reduction effect during disassembly, affecting the stability of the treatment. In addition, different patients have different limb sizes and fracture locations, and traditional splints have poor versatility, requiring the preparation of multiple sizes in advance, increasing medical costs and storage pressure. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides an orthopedic splint installation and fastening device, which effectively solves the problems mentioned in the background art.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows: An orthopedic splint mounting and fastening device includes two interconnected clamping kits with adjustable spacing and connection angle, the clamping kits being used to clamp and fix the affected limb; The clamping kit includes two sets of interlocking and detachable clamping units, each clamping unit having an arc-shaped structure and capable of changing its diameter; The clamping unit includes two coaxially arranged clamping frames, which are connected by a scissor-type cross structure. Each side of the clamping frame has a clamping end that can move outward, which is used to adjust the clamping range of the clamping end. A scissor-type structure that can be plugged in is installed between the left and right corresponding clamping frames to realize the docking of the two clamping units.

[0005] Furthermore, the outer ends of the scissor cross structure and the scissor structure are respectively equipped with a one-way self-locking structure. Under the action of the one-way self-locking structure, the scissor cross structure and the scissor structure can only move in the direction of reducing the diameter of the control clamping unit.

[0006] Furthermore, the scissor-type cross structure includes two intersecting first cross rods and second cross rods. One end of the first cross rod and the second cross rod are respectively hinged to the corresponding clamping frame. The other end of the first cross rod and the second cross rod are respectively hinged to elastic sliding components, which are respectively connected to the corresponding clamping frame. A hinge shaft is fixedly connected to the middle of the second cross rod. The first cross rod is rotatably connected to the hinge shaft, and the hinge shaft is connected to the one-way self-locking structure for transmission.

[0007] Furthermore, the scissor structure includes two sets of linkage structures. Each linkage structure includes a first connecting rod, a second connecting rod, a mounting cylinder, and a connecting rod. The outer end of the second connecting rod is hinged to a corresponding clamping frame. The outer end of the first connecting rod is hinged to an elastic sliding component, which is connected to the corresponding clamping frame. The inner end of the second connecting rod on the left is fixedly connected to the mounting cylinder, and the inner end of the first connecting rod on the left is rotatably connected to the mounting cylinder. The inner end of the first connecting rod on the right is splinedly connected to a connecting rod, and the inner end of the second connecting rod on the right is sleeved with the connecting rod. The lower end of the second connecting rod on the right is coaxially fixedly connected to a fixed cylinder with openings at both ends. The lower end of the connecting rod passes through the lower opening of the fixed cylinder, and the lower end of the connecting rod is fixedly connected to a control handle. A spring baffle is fixedly connected to the surface of the connecting rod inside the fixed cylinder, and a return spring is sleeved on the surface of the connecting rod below the spring baffle.

[0008] Furthermore, the one-way self-locking structure includes a transmission column fixedly connected coaxially to the mounting cylinder and the hinge shaft, respectively. A mating groove is provided at one end of the transmission column fixedly connected to the mounting cylinder facing the connecting rod. A connecting joint is fixedly connected to one end of the connecting rod corresponding to the mating groove. When the connecting rod moves, synchronous transmission between the connecting rod and the transmission column is achieved through the engagement of the connecting joint and the mating groove. A mating cylinder is rotatably connected to the surface of the transmission column. The mating cylinder is fixedly connected to the corresponding second cross rod and first mating rod, respectively. A ratchet is fixedly connected to the surface of the transmission column. Ratchet blocks mesh on corresponding sides of the ratchet. The ratchet blocks slide radially against the inner wall of the mating cylinder. Spring plates are fixedly connected to the outer ends of the ratchet blocks. The other end of the spring plates is fixedly connected to the inner wall of the mating cylinder. A one-way self-locking effect is achieved through the engagement of the ratchet blocks and the ratchet.

[0009] Furthermore, the outer ends of the mating cylinder are slidably connected to pressure rings along the axial direction, and push plates are respectively provided on one side of the clamping block. The upper ends of the push plates are fixedly connected to the pressure rings. The surface of the push plates is provided with inclined grooves. A connecting pin is fixedly connected to one side of the clamping block. The connecting pin is slidably engaged with the inclined grooves. When the push plates move, the engagement and disengagement of the ratchet block and the ratchet wheel can be controlled through the sliding engagement of the inclined grooves and the connecting pins.

[0010] Furthermore, the clamping end includes a clamping block, and an arc-shaped plate is slidably connected between the upper and lower corresponding clamping blocks. A sliding plate and a mating plate are respectively fixedly connected to one end of two adjacent arc-shaped plates. The sliding plate is slidably connected to the mating plate. A fixing bolt is rotatably connected to the surface of each sliding plate. A pressure plate for applying pressure to the mating plate is fixedly connected to the surface of each fixing bolt.

[0011] Furthermore, the clamping block includes a movable plate, an overlapping and fixedly connected plate connected to the inner end of the movable plate, an airbag, and a clamping pad. The movable plate is slidably connected to the clamping frame, and the clamping pad is made of a breathable material that can deform. The outer end surface of the movable plate is fixedly connected to two connecting cylinders with openings at both ends. A pressure bolt is threaded to the outer end opening of the connecting cylinder. A second piston plate is fixedly connected to one end of the pressure bolt inside the connecting cylinder. A sliding rod is hinged to the outer end of the connecting plate. A first piston plate is fixedly connected to one end of the sliding rod at the connecting cylinder. A buffer spring is fixedly connected between the first piston plate and the second piston plate. One end of one of the clamping pads is fixedly connected to an extension plate, and the other end of the extension plate is slidably connected to the corresponding clamping pad.

[0012] Furthermore, arc-shaped grooves are respectively formed on the upper and lower sides of the arc-shaped plate surface, and the connecting cylinders are slidably engaged with the arc-shaped grooves. A blocking ring is fixedly connected to the surface of the connecting cylinder, and the blocking ring is located on the outer side of the arc-shaped plate.

[0013] Furthermore, the inner ends of the two corresponding arc-shaped plates are respectively fixedly connected to joint plates, and the surfaces of the joint plates are respectively provided with connecting grooves. Connecting sliders are slidably connected inside the connecting grooves. A connecting screw is fixedly connected to the surface of one of the connecting sliders, and the other connecting slider is rotatably connected to the connecting screw. An adjustment knob is threadedly connected to the surface of the connecting screw. A positioning plate is rotatably connected to the surface of the adjustment knob. Rubber balls are fixedly connected to the upper and lower ends of the positioning plate, and the rubber balls are respectively set to correspond to the joint plates. Limiting rods are slidably connected to the upper and lower sides of the positioning plate, and one end of the limiting rod is fixedly connected to the corresponding connecting slider.

[0014] This invention features a novel structure, ingenious design, and simple and convenient operation, offering the following advantages compared to existing technologies: 1. This invention, through the combination of a scissor-type cross structure, a scissor structure and a one-way self-locking structure, can achieve gradual adjustment and real-time locking of the clamping force. Combined with the feedback data from the pressure sensor on the clamping pad, medical staff can accurately control the magnitude of the clamping force, ensuring that the pressure is evenly distributed on the surface of the affected limb, effectively avoiding complications such as skin damage and blood circulation disorders caused by excessive local pressure, and significantly improving the safety of treatment. 2. The device has multiple adjustment functions, including radial diameter adjustment, clamping range adjustment, spacing and angle adjustment, which can flexibly adapt to the dynamic changes of swelling in the patient's limbs as swelling subsides or worsens. It can achieve dynamic adjustment of the clamping force without disassembly and reassembly, avoiding repeated operation that interferes with fracture reduction. At the same time, the modular splicing design and pluggable scissor structure enable the device to adapt to the fixation needs of different limb sizes and different fracture sites, making it highly versatile and reducing medical costs. 3. The clamping unit adopts an arc-shaped structure design, combined with a sliding arc-shaped plate and extension plate, which can closely fit the contour of the limb and avoid local suspension; the clamping pad is made of breathable deformable material, combined with the elastic cushioning effect of airbag and buffer spring, which can absorb the impact force generated by limb movement, reduce discomfort during fixation, and at the same time ensure skin breathability, reduce the occurrence of problems such as stuffiness and itching, create a more comfortable treatment environment for patients, and promote the recovery process. Attached Figure Description

[0015] Figure 1 This is a solid modeling diagram of an orthopedic splint installation and fastening device according to the present invention.

[0016] Figure 2This is a first schematic diagram of the overall structure of an orthopedic splint installation and fastening device according to the present invention.

[0017] Figure 3 This is a second schematic diagram of the overall structure of an orthopedic splint installation and fastening device according to the present invention.

[0018] Figure 4 This is a third schematic diagram of the overall structure of an orthopedic splint installation and fastening device according to the present invention.

[0019] Figure 5 This is a schematic diagram of the joint plate connection structure of an orthopedic splint installation and fastening device according to the present invention.

[0020] Figure 6 This is a schematic diagram of the positioning plate installation structure of an orthopedic splint installation and fastening device according to the present invention.

[0021] Figure 7 This is a schematic diagram of the clamping unit structure of an orthopedic splint installation and fastening device according to the present invention.

[0022] Figure 8 This is a schematic diagram of the clamping end structure of an orthopedic splint installation and fastening device according to the present invention.

[0023] Figure 9 This is a schematic diagram showing the installation position of the pressure sensor in an orthopedic splint mounting and fastening device according to the present invention.

[0024] Figure 10 This is a schematic diagram of the clamping frame connection structure of an orthopedic splint installation and fastening device according to the present invention.

[0025] Figure 11 This is a schematic diagram of a scissor-cross structure of an orthopedic splint installation and fastening device according to the present invention.

[0026] Figure 12 This is a first schematic diagram of a one-way self-locking structure of an orthopedic splint installation and fastening device according to the present invention.

[0027] Figure 13 This is a second schematic diagram of a one-way self-locking structure of an orthopedic splint installation and fastening device according to the present invention.

[0028] Figure 14 This is a schematic diagram of the scissor-type docking structure of an orthopedic splint installation and fastening device according to the present invention.

[0029] Figure 15 This is a schematic diagram of the connecting rod installation structure of an orthopedic splint installation and fastening device according to the present invention.

[0030] Labels in the diagram: 1-Clamping frame, 2-First crossbar, 3-Second crossbar, 4-Mounting slider, 5-Support spring, 6-First connecting rod, 7-Second connecting rod, 8-Hinge shaft, 9-Transmission column, 10-Ratchet, 11-Ratchet block, 12-Spring plate, 13-Pressure ring, 14-Push plate, 15-Connecting pin, 16-Slanted groove, 17-Mounting cylinder, 18-Fixing cylinder, 19-Connecting rod, 20-Matching joint, 21-Matching groove, 22-Control handle, 23-Reset spring, 24-Spring baffle, 25-Limiting groove, 26-Limiting protrusion, 27-Moving plate, 28-Connecting 29-Airbag, 30-Clamping pad, 31-Connecting cylinder, 32-Blocking ring, 33-Arc plate, 34-Arc groove, 35-Sliding plate, 36-Matching plate, 37-Fixing bolt, 38-Pressure plate, 39-Slide rod, 40-First piston plate, 41-Buffer spring, 42-Second piston plate, 43-Pressure bolt, 44-Extension plate, 45-Pressure sensor, 46-Joint plate, 47-Connecting slider, 48-Connecting screw, 49-Positioning plate, 50-Limiting rod, 51-Adjusting knob, 52-Rubber ring, 53-Rubber ball, 54-Connecting groove, 55-Matching cylinder. Detailed Implementation

[0031] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1-15 As shown, the present invention provides an orthopedic splint installation and fastening device, comprising two interconnected clamping kits with adjustable spacing and connection angle, the clamping kits being used to clamp and fix the affected limb; The clamping kit includes two sets of interlocking and detachable clamping units, each clamping unit having an arc-shaped structure and capable of changing its diameter; The clamping unit includes two coaxially arranged clamping frames 1, which are connected by a scissor-type cross structure. Clamping ends that can move outwards are slidably connected to both sides of the surface of each clamping frame 1 to adjust the clamping range. A scissor-type structure that can be inserted between the left and right corresponding clamping frames 1 is installed to connect the two clamping units. During connection, the scissor-type structures of the two clamping units are aligned, and the two sets of connecting rods are engaged by the insertion action of the connecting rod 19. After initial positioning, subsequent tightening operations can be performed. This shortens the installation time of a single splint, reduces the workload of medical staff, is suitable for efficient treatment scenarios such as emergency rooms, simplifies the installation process, improves splint fixation efficiency, and meets the dynamic adjustment needs of patients with limb swelling.

[0033] The outer ends of the scissor cross structure and the scissor structure are respectively equipped with a one-way self-locking structure. Under the action of the one-way self-locking structure, the scissor cross structure and the scissor structure can only move in the direction of reducing the diameter of the control clamping unit. When the clamping unit needs to expand its diameter, the engagement state of the one-way self-locking structure needs to be released by external force to ensure the controllability of the adjustment process.

[0034] The scissor-type cross structure includes two intersecting first cross rods 2 and second cross rods 3. One end of each cross rod is hinged to a corresponding clamping frame 1, and the other end is hinged to an elastic sliding component, which is connected to the corresponding clamping frame 1. A hinge shaft 8 is fixedly connected to the middle of the second cross rod 3. The first cross rod 2 is rotatably connected to the hinge shaft 8, and the hinge shaft 8 is connected to the one-way self-locking structure for transmission. When adjusting the diameter of the clamping unit, the first cross rod 2 and the second cross rod 3 rotate relative to each other around the hinge shaft 8. The movement distance of the rods is compensated by the extension and retraction of the elastic sliding component. At the same time, the hinge shaft 8 synchronously drives the one-way self-locking structure to operate, realizing real-time self-locking during the adjustment process.

[0035] The scissor structure includes two sets of linkage structures. Each linkage structure includes a first connecting rod 6, a second connecting rod 7, a mounting cylinder 17, and a connecting rod 19. The outer end of the second connecting rod 7 is hinged to a corresponding clamping frame 1. The outer ends of the first connecting rod 6 are respectively hinged to elastic sliding components, which are respectively connected to the corresponding clamping frames 1. Each elastic sliding component includes a mounting slider 4, which is slidably connected to the corresponding clamping frame 1. The outer ends of the first cross rod 2, the second cross rod 3, and the first connecting rod 6 are respectively hinged to the mounting slider 4. The outer ends of the mounting slider 4 are respectively fixedly connected to a support spring 5, and the other end of the support spring 5 is fixedly connected to the clamping frame 1. The support spring 5 is always in a pre-tensioned state, providing inward elastic force to the mounting slider 4, ensuring that the scissor structure and the scissor cross structure remain stable when there is no external force adjustment. The inner end of the second connecting rod 7 on the left is fixedly connected to the mounting cylinder 17, and the inner end of the first connecting rod 6 on the left is fixedly connected to the mounting cylinder 17. The sleeve 17 is rotatably connected; the inner end of the first docking rod 6 on the right is splinedly connected to the connecting rod 19, wherein the end of the first docking rod 6 connected to the connecting rod 19 is provided with an installation hole, and multiple limiting protrusions 26 are fixedly connected inside the installation hole. Multiple limiting grooves 25 are provided on the surface of the connecting rod 19. The limiting protrusions 26 and the limiting grooves 25 are splinedly engaged, so that the connecting rod 19 maintains the linkage effect with the first docking rod 6 while moving axially. When the scissor structure is opened and closed, it can drive the connecting rod 19 to rotate; the inner end of the second docking rod 7 on the right is sleeved with the connecting rod 19; the lower end of the second docking rod 7 on the right is coaxially fixedly connected to the fixed sleeve 18 with openings at both ends. The lower end of the connecting rod 19 passes through the lower opening of the fixed sleeve 18 and the lower end of the connecting rod 19 is fixedly connected to the control handle 22. A spring baffle 24 is fixedly connected to the surface of the connecting rod 19 located inside the fixed sleeve 18, and a return spring 23 is sleeved on the surface of the connecting rod 19 below the spring baffle 24. During operation, pressing the control handle 22 drives the connecting rod 19 to move axially along the fixed cylinder 18. The spring baffle 24 compresses the return spring 23, causing the connecting joint 20 of the connecting rod 19 to engage with the mating groove 21 of the transmission column 9. Rotating the control handle 22 causes the scissor structure to retract. After releasing the control handle 22, the return spring 23 pushes the spring baffle 24 to reset, and the connecting joint 20 separates from the mating groove 21, completing one adjustment cycle.

[0036] The one-way self-locking structure includes a transmission column 9 coaxially fixedly connected to the mounting cylinder 17 and the hinge shaft 8. The transmission column 9, fixedly connected to the mounting cylinder 17, has a mating groove 21 at one end facing the connecting rod 19. A connecting joint 20 is fixedly connected to the end of the connecting rod 19 corresponding to the mating groove 21. When the connecting rod 19 moves, synchronous transmission between the connecting rod 19 and the transmission column 9 is achieved through the engagement of the connecting joint 20 and the mating groove 21. The connecting joint 20 has a frustoconical toothed structure, and the engagement of the mating groove 21 with the connecting joint 20 facilitates axial mating engagement between the connecting joint 20 and the mating groove 21. After the groove 21 engages, the connecting rod 19 and the transmission column 9 are linked. The surface of the transmission column 9 is rotatably connected to the mating cylinder 55, which is fixedly connected to the corresponding second cross rod 3 and first docking rod 6. The surface of the transmission column 9 is fixedly connected to the ratchet 10, and the ratchet blocks 11 are engaged on the corresponding two sides of the ratchet 10. The ratchet blocks 11 are radially slidably connected to the inner wall of the mating cylinder 55. The outer ends of the ratchet blocks 11 are fixedly connected to the spring plates 12, and the other ends of the spring plates 12 are fixedly connected to the inner wall of the mating cylinder 55. The one-way self-locking effect is achieved under the engagement of the ratchet blocks 11 and the ratchet 10. When the drive column 9 rotates with the connecting rod 19 or the hinge shaft 8, the ratchet 10 pushes the ratchet block 11 to slide radially along the inner wall of the mating cylinder 55, and the spring plate 12 is compressed. When the ratchet 10 rotates to the next tooth groove, the spring plate 12 resets and pushes the ratchet block 11 to engage in the tooth groove, restricting the reverse rotation of the drive column 9, thereby realizing the unidirectional contraction self-locking of the scissor structure and the scissor cross structure.

[0037] The outer ends of the mating cylinder 55 are axially slidably connected to pressure rings 13. Push plates 14 are respectively provided on one side of the clamping block. The upper ends of the push plates 14 are fixedly connected to the pressure rings 13. An inclined groove 16 is formed on the surface of the push plates 14. A connecting pin 15 is fixedly connected to one side of the clamping block. The connecting pin 15 is slidably engaged with the inclined groove 16. When the push plates 14 move, the engagement and disengagement of the ratchet block 11 and the ratchet wheel 10 can be controlled through the sliding engagement of the inclined groove 16 and the connecting pin 15. When self-locking needs to be released, the pressure rings 13 are axially pushed to move the push plates 14. The inclined grooves 16, through the connecting pin 15, drive the ratchet block 11 to slide away from the ratchet wheel 10, causing the ratchet block 11 to disengage from the ratchet wheel 10. At this time, the transmission column 9 can rotate freely, realizing the adjustment of the clamping unit diameter. After adjustment, the pressure rings 13 are released, and the spring plate 12 pushes the ratchet block 11 to reset and re-engage.

[0038] The clamping end includes clamping blocks, and an arc-shaped plate 33 is slidably connected between the upper and lower corresponding clamping blocks. A sliding plate 35 and a mating plate 36 are respectively fixedly connected to one end of two adjacent arc-shaped plates 33. The sliding plate 35 is slidably connected to the mating plate 36. A fixing bolt 37 is rotatably connected to the surface of each sliding plate 35, and a pressure plate 38 for applying pressure to the mating plate 36 is fixedly connected to the surface of each fixing bolt 37. When adjusting the clamping range, the arc-shaped plate 33 is pushed to make the sliding plate 35 slide along the mating plate 36 until the clamping end covers the area of ​​the affected limb requiring fixation. The fixing bolt 37 is rotated to drive the pressure plate 38 to press the mating plate 36 tightly. The relative position of the sliding plate 35 and the mating plate 36 is fixed by friction, thereby locking the clamping range.

[0039] The clamping block includes a movable plate 27, an overlapping and fixedly arranged connecting plate 28 connected to the inner end of the movable plate 27, an airbag 29, and a clamping pad 30. The movable plate 27 is slidably connected to the clamping frame 1. The clamping pad 30 is made of a breathable material that can deform. A plurality of evenly arranged pressure sensors 45 are fixedly connected to the end of the clamping pad 30 that contacts the affected limb. These sensors are used to detect the clamping pressure on the affected limb, monitor the contact pressure between the clamp and the limb in real time, and provide feedback data to assist medical staff in precise control. The pressure sensors 45 transmit the detected pressure signals in real time, and medical staff can adjust the clamping force according to the feedback data to avoid excessive or insufficient pressure.

[0040] The outer end surface of the movable plate 27 is fixedly connected to two connecting cylinders 31 with openings at both ends. A pressure bolt 43 is threadedly connected to the outer end opening of the connecting cylinder 31. A second piston plate 42 is fixedly connected to one end of the pressure bolt 43 inside the connecting cylinder 31. A sliding rod 39 is hinged to the outer end of the connecting plate 28. A first piston plate 40 is fixedly connected to one end of the sliding rod 39 located in the connecting cylinder 31. A buffer spring 41 is fixedly connected between the first piston plate 40 and the second piston plate 42. Rotating the pressure bolt 43 pushes the second piston plate 42 to move axially along the connecting cylinder 31, and the buffer spring... Spring 41 transmits pressure to the first piston plate 40, which drives slide rod 39 to push connecting plate 28 to contract, thereby causing airbag 29 and clamping pad 30 to apply pressure towards the affected limb. Buffer spring 41 can absorb the impact force generated by limb movement and maintain stable pressure. The fastening force can be dynamically adjusted without disassembly, achieving precise and uniform control of the orthopedic splint's fastening force, avoiding excessive local pressure or loosening of the fixation. It adapts to changes in the patient's limb swelling, improving treatment comfort and safety. The uniformity of pressure between the splint and the limb is improved, reducing the risk of complications such as skin damage and blood circulation disorders caused by uneven pressure.

[0041] One end of one of the clamping pads 30 is fixedly connected to an extension plate 44, and the other end of the extension plate 44 is slidably connected to the corresponding clamping pad 30. The clamping range can be increased by controlling the movement of the moving plate 27. The extension plate 44 is used to assist in clamping. When the clamping range expands, the extension plate 44 slides out from the corresponding clamping pad 30 to fill the gap between the two clamping pads 30, ensuring the continuity of the clamping surface and avoiding local suspension that would cause pressure concentration.

[0042] The arc-shaped plate 33 has arc-shaped grooves 34 on its upper and lower sides. The connecting cylinders 31 slide in conjunction with the arc-shaped grooves 34. A blocking ring 32 is fixedly connected to the surface of each connecting cylinder 31, and the blocking ring 32 is located on the outer side of the arc-shaped plate 33. The arc-shaped grooves 34 provide sliding guidance for the connecting cylinders 31, ensuring that the moving plate 27 moves along an arc-shaped trajectory. The blocking rings 32 prevent the connecting cylinders 31 from detaching from the arc-shaped grooves 34, ensuring the stability of the structural connection.

[0043] Two corresponding arc-shaped plates 33 are respectively fixedly connected to their inner ends with joint plates 46. The surfaces of the joint plates 46 are respectively provided with connecting grooves 54. Connecting sliders 47 are slidably connected inside the connecting grooves 54. One of the connecting sliders 47 is fixedly connected to the surface of a connecting screw 48, and the other connecting slider 47 is rotatably connected to the connecting screw 48. An adjusting knob 51 is threadedly connected to the surface of the connecting screw 48. A rubber pad 52 is fixedly connected to the end of the adjusting knob 51 facing the joint plate 46. By rotating the adjusting knob 51, the pressure of the rubber pad 52 on the joint plate 46 is increased, so that the two joint plates 46 cannot rotate relative to each other. When the adjusting knob 51 is rotated, the adjusting knob 51 moves axially along the connecting screw 48 by means of thread transmission. The rubber pad 52 is tightly attached to the surface of the joint plate 46, and the rotation of the joint plate 46 is restricted by friction, thereby fixing the connection angle of the clamping kit.

[0044] A positioning plate 49 is rotatably connected to the surface of the adjustment knob 51. Rubber balls 53 are fixedly connected to the upper and lower ends of the positioning plate 49, and the rubber balls 53 are respectively set corresponding to the joint plate 46. Limiting rods 50 are slidably connected to the upper and lower sides of the surface of the positioning plate 49. One end of the limiting rod 50 is fixedly connected to the corresponding connecting slider 47. When adjusting the spacing of the clamping kit, the connecting slider 47 slides along the connecting groove 54. The limiting rod 50 provides guidance for the positioning plate 49. Rotating the adjustment knob 51 drives the positioning plate 49 to move, so that the rubber balls 53 press against the surface of the joint plate 46. The position of the connecting slider 47 is fixed by friction, thereby locking the spacing of the clamping kit, so that the patient can keep the affected limb in a fixed state when moving it.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them.

Claims

1. An orthopedic splint installation and fastening device, characterized in that, It includes two interconnected clamping kits with adjustable spacing and connection angle, which are used to clamp and fix the affected limb; The clamping kit includes two sets of interlocking and detachable clamping units, each clamping unit having an arc-shaped structure and capable of changing its diameter; The clamping unit includes two coaxially arranged clamping frames (1), and the upper and lower clamping frames (1) are connected by a scissor-cross structure. The two sides of the surface of the clamping frame (1) are respectively slidably connected with clamping ends that can move outward, so as to adjust the clamping range of the clamping ends. The left and right corresponding clamping frames (1) are installed with scissor-type structures that can be plugged in to realize the docking of the two clamping units.

2. The orthopedic splint installation and fastening device according to claim 1, characterized in that, The outer ends of the scissor-type cross structure and the scissor structure are respectively equipped with a one-way self-locking structure. Under the action of the one-way self-locking structure, the scissor-type cross structure and the scissor structure can only move in the direction of reducing the diameter of the control clamping unit.

3. The orthopedic splint installation and fastening device according to claim 2, characterized in that, The scissor-type cross structure includes two cross rods, a first cross rod (2) and a second cross rod (3), with one end of the first cross rod (2) and the second cross rod (3) respectively hinged to the corresponding clamping frame (1). The other ends of the first cross rod (2) and the second cross rod (3) are respectively hinged to elastic sliding components, which are respectively connected to the corresponding clamping frame (1). The middle part of the second cross rod (3) is fixedly connected to a hinge shaft (8). The first cross rod (2) is rotatably connected to the hinge shaft (8), and the hinge shaft (8) is connected to the one-way self-locking structure for transmission.

4. The orthopedic splint installation and fastening device according to claim 3, characterized in that, The scissor structure includes two sets of linkage structures. The linkage structure includes a first connecting rod (6), a second connecting rod (7), an mounting cylinder (17), and a connecting rod (19). The outer end of the second connecting rod (7) is hinged to the corresponding clamping frame (1). The outer end of the first connecting rod (6) is hinged to an elastic sliding component. The elastic sliding component is connected to the corresponding clamping frame (1). The inner end of the second connecting rod (7) on the left is fixedly connected to the mounting cylinder (17). The inner end of the first connecting rod (6) on the left is rotatably connected to the mounting cylinder (17). The inner end of the first connecting rod (6) on the right is splined to the connecting rod (19). The inner end of the second connecting rod (7) on the right is sleeved with the connecting rod (19). The lower end of the second docking rod (7) on the right side is coaxially fixedly connected to a fixed cylinder (18) with openings at both the upper and lower ends. The lower end of the connecting rod (19) passes through the lower opening of the fixed cylinder (18) and the lower end of the connecting rod (19) is fixedly connected to a control handle (22). A spring baffle (24) is fixedly connected to the surface of the connecting rod (19) located inside the fixed cylinder (18). A return spring (23) is sleeved on the surface of the connecting rod (19) on the lower side of the spring baffle (24).

5. The orthopedic splint installation and fastening device according to claim 4, characterized in that, The one-way self-locking structure includes a transmission column (9) that is fixedly connected coaxially to the mounting cylinder (17) and the hinge shaft (8). The transmission column (9) fixedly connected to the mounting cylinder (17) has a docking groove (21) at one end facing the connecting rod (19). The connecting rod (19) is fixedly connected to a connector (20) at the end corresponding to the docking groove (21). When the connecting rod (19) moves, the synchronous transmission between the connecting rod (19) and the transmission column (9) is achieved through the meshing of the connector (20) and the docking groove (21). The surface of the transmission column (9) is rotatably connected to a mating cylinder (55). The mating cylinder (55) is fixedly connected to the corresponding second cross rod (3) and the first docking rod (6). The surface of the transmission column (9) is fixedly connected to a ratchet (10). The ratchet (10) is engaged with a ratchet block (11) on the corresponding two sides. The ratchet block (11) is radially slidably connected to the inner wall of the mating cylinder (55). The outer end of the ratchet block (11) is fixedly connected to a spring plate (12). The other end of the spring plate (12) is fixedly connected to the inner wall of the mating cylinder (55). The one-way self-locking effect is achieved under the engagement of the ratchet block (11) and the ratchet (10).

6. The orthopedic splint installation and fastening device according to claim 5, characterized in that, The outer end of the fitting cylinder (55) is slidably connected to a pressure ring (13) along the axial direction. A push plate (14) is provided on one side of the clamping block. The upper end of the push plate (14) is fixedly connected to the pressure ring (13). An inclined groove (16) is opened on the surface of the push plate (14). A connecting pin (15) is fixedly connected to one side of the clamping block. The connecting pin (15) is slidably engaged with the inclined groove (16). When the push plate (14) moves, the engagement and disengagement of the ratchet block (11) and the ratchet wheel (10) can be controlled through the sliding engagement of the inclined groove (16) and the connecting pin (15).

7. The orthopedic splint installation and fastening device according to claim 6, characterized in that, The clamping end includes a clamping block, and an arc-shaped plate (33) is slidably connected between the upper and lower corresponding clamping blocks. A sliding plate (35) and a mating plate (36) are respectively fixedly connected to one end of two adjacent arc-shaped plates (33). The sliding plate (35) is slidably connected to the mating plate (36). A fixing bolt (37) is rotatably connected to the surface of the sliding plate (35). A pressure plate (38) for applying pressure to the mating plate (36) is fixedly connected to the surface of the fixing bolt (37).

8. The orthopedic splint installation and fastening device according to claim 7, characterized in that, The clamping block includes a movable plate (27), an overlapping and fixed connecting plate (28) connected to the inner end of the movable plate (27), an airbag (29), and a clamping pad (30). The movable plate (27) is slidably connected to the clamping frame (1), and the clamping pad (30) is made of a breathable material that can deform. The outer end surface of the movable plate (27) is fixedly connected to the two ends of the connecting cylinder (31) with openings at both ends. The outer end opening of the connecting cylinder (31) is threaded with a pressure bolt (43). The end of the pressure bolt (43) located inside the connecting cylinder (31) is fixedly connected to a second piston plate (42). The outer end of the connecting plate (28) is respectively hinged with a slide rod (39). The slide rod (39) located at the end of the connecting cylinder (31) is fixedly connected to a first piston plate (40). A buffer spring (41) is fixedly connected between the first piston plate (40) and the second piston plate (42). One end of one of the clamping pads (30) is fixedly connected to an extension plate (44), and the other end of the extension plate (44) is slidably connected to the corresponding clamping pad (30).

9. The orthopedic splint installation and fastening device according to claim 8, characterized in that, The arc plate (33) has arc grooves (34) on its upper and lower sides respectively. The connecting cylinder (31) slides with the arc grooves (34) respectively. The surface of the connecting cylinder (31) is fixedly connected with a blocking ring (32) respectively. The blocking ring (32) is located on the outside of the arc plate (33).

10. The orthopedic splint installation and fastening device according to claim 7, characterized in that, Two corresponding arc-shaped plates (33) are respectively fixedly connected to their inner ends with joint plates (46). The surfaces of the joint plates (46) are respectively provided with connecting grooves (54). Connecting sliders (47) are slidably connected inside the connecting grooves (54). One of the connecting sliders (47) is fixedly connected to a connecting screw (48), and the other connecting slider (47) is rotatably connected to the connecting screw (48). The surface of the connecting screw (48) is threaded with an adjustment knob (51). The surface of the adjustment knob (51) is rotatably connected to a positioning plate (49). Rubber balls (53) are fixedly connected to the upper and lower ends of the positioning plate (49). The rubber balls (53) are respectively set to correspond to the joint plate (46). Limiting rods (50) are slidably connected to the upper and lower sides of the surface of the positioning plate (49). One end of the limiting rod (50) is fixedly connected to the corresponding connecting slider (47).

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