Orthopedic trauma traction device

Abstract

The invention relates to the field of medical auxiliary instruments, and discloses an orthopedic trauma traction device which comprises a main body supporting frame, an adjustable fixing assembly is arranged at the bottom of the main body supporting frame and can fix the main body supporting frame to a bed body, a traction assembly is arranged on the main body supporting frame, and a traction piece is arranged at the bottom of the traction assembly and can fix the traction assembly to the bed body. The acting force applied to the traction piece is adjusted under the power of the traction assembly; the adjustable fixing assembly comprises a U-shaped frame, the top of the U-shaped frame is fixed to the bottom of the main body supporting frame, a locking piece is arranged in the U-shaped frame, and the U-shaped frame is fixed to the bed body through the locking piece to achieve fixation. According to the auxiliary locking structure, after the U-shaped frame is fixed, auxiliary locking of the U-shaped frame is achieved through the traction assembly, the larger the acting force provided by the traction assembly is, the stronger the auxiliary locking effect of the auxiliary locking structure on the U-shaped frame is, and therefore the dual effects of auxiliary fixing and traction acting force adjusting are achieved.

Description

Technical Field

[0001] The invention relates to the field of medical auxiliary equipment, and in particular to an orthopedic trauma traction device. Background Art

[0002] In the field of orthopedic medicine, the patient's recovery process not only depends on professional treatment in the hospital, but home rehabilitation training also plays an extremely critical role. Many patients with fractures, joint dislocations, or bone hyperplasia need to return home for rehabilitation training after initial treatment in the hospital to promote the recovery of bone and joint function. However, the existing orthopedic trauma traction devices are mainly designed for use in hospital environments, and many problems are exposed when patients return home for rehabilitation training.

[0003] Hospital beds are usually equipped with standardized bed rails and other structures. Existing traction devices can be easily fixed on these bed rails. With the help of the hospital's complete medical facilities and the guidance of professional medical staff, patients can be provided with stable and effective treatment. However, home environments vary greatly and do not have a fixed structure specifically adapted for orthopedic trauma traction devices. If patients want to use such traction devices at home, they have to find or make additional auxiliary devices to achieve fixation.

[0004] This makeshift fixation method has great uncertainty. On the one hand, the materials, sizes, and installation methods of the additional auxiliary devices are different, making it difficult to ensure that they are perfectly compatible with the orthopedic trauma traction device, thus affecting the firmness of the fixation. On the other hand, during the patient's long-term traction training, the auxiliary device may gradually loosen or even fall off due to uneven force, material aging, etc., making it impossible for the traction device to maintain a stable traction posture. The stability of the traction posture is crucial to the patient's rehabilitation effect. Any slight deviation may not only delay the rehabilitation process, but may even cause the condition to worsen. Therefore, it is urgent to develop an orthopedic trauma traction device that can be easily fixed and installed and can maintain a stable traction posture in various environments. This will provide a solid guarantee for the home rehabilitation training of the majority of orthopedic patients and improve the rehabilitation effect and quality of life. Summary of the invention

[0005] The purpose of the present invention is to provide an orthopedic trauma traction device to solve the above technical problems.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An orthopedic trauma traction device comprises: a main support frame, an adjustable fixing assembly is arranged at the bottom of the main support frame, and the main support frame can be fixed on a bed, a traction assembly is arranged on the main support frame, and a traction piece is arranged at the bottom of the traction assembly, and the force applied to the traction piece is adjusted under the power of the traction assembly.

[0008] Furthermore, the adjustable fixing component includes: a U-shaped frame, the top of the U-shaped frame is fixed to the bottom of the main support frame, a locking member is arranged inside the U-shaped frame, and the U-shaped frame is fixed to the bed body through the locking member to achieve fixation;

[0009] An auxiliary locking structure, after the U-shaped frame is fixed, the auxiliary locking of the U-shaped frame is realized by using the pulling component, and the greater the acting force provided by the pulling component, the stronger the auxiliary locking effect of the auxiliary locking structure on the U-shaped frame.

[0010] Furthermore, the pulling component includes:

[0011] A winch drum, a pulling rope is wound around the winch drum, one end of the pulling rope is fixed to the pulling member, the winch drum is rotatably installed in the installation box, the installation box is fixed to the top of the main support frame, one side of the installation box is arranged as an open structure for the disassembly and assembly of the winch drum to enter and exit, and a lever is fixed to the side of the winch drum away from the installation box;

[0012] A tension sensor is arranged at the connection between the pulling rope and the pulling member for real-time detection of the magnitude of the acting force exerted by the pulling rope on the pulling member;

[0013] A locking structure, including a locking tooth groove arranged inside the installation box and a locking block coaxial with the winch drum, the locking block is arranged in a T shape, when the acting force exerted by the pulling rope on the pulling member reaches a preset value, the locking block is pushed into the locking tooth groove to fix the position of the winch drum; an elastic ring is arranged inside the locking tooth groove.

[0014] Furthermore, the auxiliary locking structure includes a transmission gear ring and a gear, the transmission gear ring is fixedly arranged on the outer side wall of the winch drum, the transmission gear ring is meshed and driven with the gear, the gear is rotatably installed on the main support frame, the gear is meshed and driven with a rack, the rack is slidably sleeved on two limiting sleeves arranged on the main support frame, and the rack and the main support frame form a triangular structure;

[0015] A wedge block is arranged on one side of the top of the U-shaped frame, an elastic layer is arranged on the vertical inner side wall of the U-shaped frame, and a push block matched with the inclined surface of the wedge block is fixedly connected to the end of the rack away from the gear.

[0016] Furthermore, convex portions are arranged at both ends of the wedge block, springs are arranged between the convex portions and the top of the U-shaped frame, a notch is opened on the top of the U-shaped frame, the bottom of the wedge block is slidably installed in the notch, and an inclined insertion plate is arranged at the bottom of the wedge block, and a gap is left between the elastic layer and the vertical inner side wall of the U-shaped frame for the inclined insertion plate to enter.

[0017] Furthermore, the pulling assembly also includes an electric drive mechanism, which is transmission-connected to the rope drum and connected to the tension sensor signal; when the tension sensor detects that the force applied by the pull rope on the pulling member does not reach a preset value, the electric drive mechanism can automatically drive the rope drum to rotate and adjust the force applied to the pulling member; when the preset value is reached, the electric drive mechanism stops working and the locking structure is activated at the same time.

[0018] Further, the locking element comprises:

[0019] A screw rod, the screw rod vertically passes through the top of the U-shaped frame and is threadedly connected to the U-shaped frame, and a rotating handle is fixed to the top of the screw rod;

[0020] The bottom end of the screw is fixedly connected to the pressing plate. When the rotating handle is turned to move the screw downward, the pressing plate will gradually press the surface of the bed, and the U-shaped frame will be fixed on the bed by increasing the friction between the pressing plate and the bed.

[0021] Furthermore, a rubber anti-slip layer is provided on the bottom surface of the pressing plate.

[0022] Beneficial effects of the present invention:

[0023] (1) The adjustable fixing assembly of the present invention comprises a U-shaped frame and a locking member. The U-shaped frame is convenient for being quickly clamped on the edge of the bed. By simply operating the locking member such as a screw and a pressing plate, the device can be initially fixed on the bed, and the installation process is simple and quick. At the same time, the auxiliary locking structure plays a role when the pulling assembly is working. As the pulling force increases, the auxiliary locking effect is enhanced, further improving the fixing stability of the device on the bed, which not only ensures the installation efficiency, but also ensures the stability during use.

[0024] (2) The rope drum in the present invention exerts a force on the pulling member by winding the pull rope, and the transmission gear ring on the outer wall participates in the transmission of the auxiliary locking structure. One component has multiple functions, which improves the utilization rate of the components. In addition, the open structure on one side of the installation box facilitates the disassembly and installation of the rope drum, which is convenient for maintenance and replacement of the rope drum, reducing the maintenance cost and difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 A three-dimensional schematic diagram from another angle;

[0028] Figure 3 It is an exploded schematic diagram of the locking structure;

[0029] Figure 4 This is a schematic diagram of the position of the notch and the inserted inclined plate in the present invention.

[0030] Description of the drawings: 1. Main body support frame; 2. Adjustable fixing component; 21. U-shaped frame; 22. Locking member; 23. Auxiliary locking structure; 231. Transmission gear ring; 232. Gear; 233. Rack; 234. Limiting sleeve; 235. Wedge block; 236. Elastic layer; 237. Pushing block; 238. Protrusion; 239. Spring; 240. Notch; 241. Inserted inclined plate; 3. Pulling component; 31. Rope winding disc; 32. Pulling rope; 33. Installation box; 34. Lever; 35. Locking structure; 351. Locking tooth groove; 352. Locking block; 4. Pulling member. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-4 As shown in the figure, the present invention is an orthopedic trauma traction device, including: a main body support frame 1, an adjustable fixing component 2 is arranged at the bottom of the main body support frame 1, which can fix the main body support frame 1 on the bed body, a pulling component 3 is arranged on the main body support frame 1, and a pulling member 4 is arranged at the bottom of the pulling component 3, and the acting force applied to the pulling member 4 is adjusted under the power of the pulling component 3.

[0033] The adjustable fixing component 2 includes: a U-shaped frame 21, the top of the U-shaped frame 21 is fixed to the bottom of the main body support frame 1, a locking member 22 is arranged inside the U-shaped frame 21, and the U-shaped frame 21 is fixed on the bed body through the locking member 22 to achieve fixation;

[0034] An auxiliary locking structure 23, after the U-shaped frame 21 is fixed, the U-shaped frame 21 is assisted to be locked by using the pulling component 3, and the greater the acting force provided by the pulling component 3, the stronger the auxiliary locking effect of the auxiliary locking structure 23 on the U-shaped frame 21.

[0035] As an embodiment, the locking member 22 includes:

[0036] A screw rod, the screw rod vertically penetrates the top of the U-shaped frame 21 and is threadedly connected to the U-shaped frame 21, and a rotating handle is fixed to the top end of the screw rod to facilitate the operator to rotate the screw rod.

[0037] The pressing plate, the bottom end of the screw rod is fixedly connected to the pressing plate. When the rotary handle is rotated to move the screw rod downward, the pressing plate will gradually press against the surface of the bed body. By increasing the friction force between the pressing plate and the bed body, the U-shaped frame 21 is fixed on the bed body. A rubber anti-slip layer is provided on the bottom surface of the pressing plate. The rubber anti-slip layer can increase the friction force between the pressing plate and the bed body, improve the stability of fixation, and at the same time avoid damaging the surface of the bed body.

[0038] The pulling assembly 3 includes:

[0039] A rope winding disc 31, a pulling rope 32 is wound around the rope winding disc 31. One end of the pulling rope 32 is fixed to the pulling member 4. The rope winding disc 31 is rotatably installed in the installation box 33. The installation box 33 is fixed to the top of the main support frame 1. One side of the installation box 33 is arranged as an open structure for the disassembly and installation of the rope winding disc 31 to enter and exit. A dial rod 34 is fixed to the side of the rope winding disc 31 facing away from the installation box 33;

[0040] A tension sensor is provided at the connection between the pulling rope 32 and the pulling member 4 for real-time detection of the magnitude of the force exerted by the pulling rope 32 on the pulling member 4;

[0041] The locking structure 35 includes a locking tooth groove 351 disposed inside the mounting box 33 and a locking block 352 fixedly coaxial with the cable winding disc 31. The locking block 352 is arranged in a T shape. When the force exerted by the pull rope 32 on the pulling member 4 reaches a preset value, the locking block 352 is pushed into the locking tooth groove 351 to fix the position of the cable winding disc 31. An elastic ring is arranged inside the locking tooth groove 351. In the present invention, by rotating the lever 34 connected to the cable winding disc 31, the cable winding disc 31 is driven to rotate inside the mounting box 33, so that the pull rope 32 wound around the cable winding disc 31 exerts a force on the pulling member 4. The force sensor is arranged at the connection between the pull rope 32 and the pulling member 4, and it monitors the magnitude of the force in real time and transmits the data to the built-in display screen for intuitive display. When the force reaches the preset value, the locking mechanism is pushed, so that the locking block 352 fixedly coaxial with the cable winding disc 31 is inserted into the locking tooth groove 351 inside the mounting box 33 to fix the position of the cable winding disc 31. Since the elastic ring is arranged inside the locking tooth groove 351, a stable connection can be achieved after the locking block 352 enters the locking tooth groove 351. Specifically, when the locking block 352 is inserted into the locking tooth groove 351, the elastic ring is compressed, and the elastic deformation force generated by it tightly wraps the locking block 352. During daily use, even if the device is impacted to a certain extent due to the unconscious shaking of the patient's limb or slight external vibration, the elastic ring can absorb and buffer these impact forces by virtue of its own elasticity, preventing the locking block 352 from disengaging from the locking tooth groove 351 due to vibration, ensuring that the cable winding disc 31 is always in a locked state and maintaining a stable pulling force. On the other hand, the elastic ring also has a protective effect. The frequent insertion and withdrawal of the locking block 352 into and out of the locking tooth groove 351 will inevitably cause friction with the tooth groove, which may lead to wear on the surfaces of the tooth groove and the locking block 352 in the long run, affecting the service life and performance of the locking structure 35. The existence of the elastic ring forms a buffer pad between the two, reducing the damage caused by direct friction, prolonging the service lives of the locking tooth groove 351 and the locking block 352, reducing the maintenance cost of the device, and enabling the orthopedic trauma traction device to serve patients stably for a long time.

[0042] On the one hand, the force sensor monitors and feeds back data in real time, which is convenient for medical staff or patients to accurately adjust the pulling force according to the treatment plan, ensuring the accuracy of the treatment effect and avoiding the adverse effects caused by improper pulling force. On the other hand, the locking structure 35 is activated after the pulling force reaches the standard, preventing the cable winding disc 31 from accidentally rotating due to external forces, inertia and other factors, maintaining the stability of the pulling force, providing a safe and reliable treatment environment for patients, and ensuring the smooth progress of the treatment process.

[0043] The auxiliary locking structure 23 includes a transmission gear ring 231 and a gear 232. The transmission gear ring 231 is fixedly arranged on the outer side wall of the cable winding disc 31. The transmission gear ring 231 is meshed and driven with the gear 232. The gear 232 is rotatably installed on the main body support frame 1. The gear 232 is meshed and driven with a rack 233. The rack 233 is slidably sleeved on two limit sleeves 234 arranged on the main body support frame 1, and the rack 233 and the main body support frame 1 form a triangular structure;

[0044] A wedge block 235 is arranged on one side of the top of the U-shaped frame 21. An elastic layer 236 is arranged on the vertical inner side wall of the U-shaped frame 21. One end of the rack 233 away from the gear 232 is fixedly connected with a push block 237 which is matched with the inclined surface of the wedge block 235.

[0045] Protrusions 238 are arranged at both ends of the wedge block 235. A spring 239 is arranged between the protrusions 238 and the top of the U-shaped frame 21. A notch 240 is formed in the top of the U-shaped frame 21. The bottom of the wedge block 235 is slidably installed in the notch 240, and an inclined insertion plate 241 is arranged at the bottom of the wedge block 235. A gap is left between the elastic layer 236 and the vertical inner side wall of the U-shaped frame 21 for the inclined insertion plate 241 to enter.

[0046] In the present invention, the top of the U-shaped frame 21 is fixed to the bottom of the main body support frame 1. The U-shaped frame 21 is clamped on the edge of the bed body, and then the locking member 22 inside the U-shaped frame 21 is operated. For example, the locking member 22 is a screw and pressing plate structure. The screw is rotated to lower the pressing plate and press the bed body, and the U-shaped frame 21 is fixed on the bed body by increasing the friction force, so as to realize the preliminary fixation of the main body support frame 1.

[0047] Auxiliary locking structure 23 is activated: After the U-shaped frame 21 is fixed, when the pulling assembly 3 starts to work and applies a force to the pulling member 4, the auxiliary locking structure 23 begins to function. The transmission gear ring 231 in the auxiliary locking structure 23 is fixed on the outer wall of the cable winch 31. When the cable winch 31 rotates, it drives the transmission gear ring 231 to rotate. The transmission gear ring 231 meshes with the gear 232, causing the gear 232 to rotate accordingly. The gear 232 then meshes with and drives the rack 233. Since the rack 233 is slidably sleeved on the two limit sleeves 234 of the main body support frame 1 and forms a triangular structure with the main body support frame 1, the stability of the sliding of the rack 233 is ensured. As the cable winch 31 continues to rotate and the force provided by the pulling assembly 3 increases, the distance that the rack 233 slides along the limit sleeve 234 also increases. The inclined surface of the wedge block 235 at the bottom of the main body support frame 1 faces the outer side edge of the U-shaped frame 21. The push block 237 fixed to the end of the rack 233 away from the gear 232 moves along the inclined surface of the wedge block 235, generating a downward pressing force on the wedge block 235. Thus, the wedge block 235 moves downward against the action of the spring 239, prompting the insertion inclined block to forcibly enter the gap between the elastic layer 236 and the vertical inner wall of the U-shaped frame 21, fully filling the gap between the U-shaped frame 21 and the bed body, thereby reducing the shaking of the U-shaped frame 21. Moreover, the greater the force of the pulling assembly 3, the stronger this auxiliary locking force, enhancing the fixing stability of the entire device on the bed body.

[0048] Through the above technical solutions, firstly, it can balance installation convenience and stability. The adjustable fixing component 2 includes a U-shaped frame 21 and a locking member 22. The U-shaped frame 21 is convenient for quickly clamping on the edge of the bed body. Through the simple operation of the locking member 22, such as a screw and a pressing plate, the device can be initially fixed on the bed body, and the installation process is simple and fast. At the same time, the auxiliary locking structure 23 functions when the pulling assembly 3 is working. As the pulling force increases, the auxiliary locking effect is enhanced, further improving the fixing stability of the device on the bed body, ensuring both the installation efficiency and the stability during use.

[0049] Secondly, the auxiliary locking structure 23 utilizes the force of the pulling assembly 3 to achieve the auxiliary locking of the U-shaped frame 21 without additional power. During the pulling process, the force of the pulling assembly 3 is not only used for pulling and treating the patient but is also cleverly converted into the locking force of the device itself, enabling the force to be more effectively utilized while enhancing the overall reliability of the device.

[0050] At the same time, it can also achieve precise control and safety assurance: the tension sensor in the pulling component 3 can detect the force applied by the pull rope 32 to the pulling member 4 in real time, and the operator can accurately control the pulling force according to the detection result to avoid injury to the patient due to excessive pulling. The locking structure 35 fixes the rope drum 31 when the tension reaches the preset value, further ensuring the stability and safety of the pulling force, and improving the safety of use while achieving precise treatment. On the one hand, the rope drum 31 exerts force on the pulling member 4 by winding the pull rope 32, and on the other hand, the transmission gear ring 231 on its outer wall participates in the transmission of the auxiliary locking structure 23. One component has multiple functions, which improves the utilization rate of the component. In addition, the open structure on one side of the installation box 33 facilitates the disassembly and installation of the rope drum 31, which is convenient for maintenance and replacement of the rope drum 31, reducing the maintenance cost and difficulty.

[0051] Finally, compact structure and functional integration: the structural design of the entire device is compact, and the various components cooperate with each other to form an organic whole. Multiple functional modules such as the adjustable fixing component 2, the pulling component 3 and the auxiliary locking structure 23 are integrated together, realizing multiple functions in a limited space, reducing the footprint of the device, improving space utilization, and also facilitating the transportation and storage of the device.

[0052] The pulling assembly 3 also includes an electric drive mechanism, which is transmission-connected to the rope drum 31, and the electric drive mechanism is signal-connected to the tension sensor; when the tension sensor detects that the force applied by the pull rope 32 to the pulling member 4 does not reach a preset value, the electric drive mechanism can automatically drive the rope drum 31 to rotate and adjust the force applied to the pulling member 4; when the preset value is reached, the electric drive mechanism stops working and the locking structure 35 is started at the same time; the locking block 352 in the locking structure 35 includes a locking body and a block, and the block is connected to the locking body through an electric telescopic rod, and the electric telescopic rod is used to realize the synchronous start of the locking structure 35, and the electric drive mechanism is a driving motor. The device can be provided with external wires or power modules to realize the power supply of electrical components, and the electrical components are all electrically connected to the controller.

[0053] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An orthopedic trauma traction device, characterized in that: include: The main body support frame has an adjustable fixing component at the bottom thereof, which can fix the main body support frame on the bed body; the main body support frame has a pulling component, and a pulling piece is arranged at the bottom of the pulling component, and the force applied to the pulling piece is adjusted under the power of the pulling component.

2. The orthopedic trauma traction device according to claim 1, characterized in that: The adjustable fixing assembly includes: a U-shaped frame, the top of the U-shaped frame is fixed to the bottom of the main support frame, and a locking piece is arranged inside the U-shaped frame, and the U-shaped frame is fixed to the bed body by the locking piece; The auxiliary locking structure uses a pulling assembly to achieve auxiliary locking of the U-shaped frame after the U-shaped frame is fixed, and the greater the force provided by the pulling assembly, the stronger the auxiliary locking effect of the auxiliary locking structure on the U-shaped frame.

3. The orthopedic trauma traction device according to claim 2, characterized in that: The pulling assembly comprises: A rope drum, a pull rope is wound around the rope drum, one end of the pull rope is fixed to the pulling member, the rope drum is rotatably installed in the installation box, the installation box is fixed to the top of the main support frame, one side of the installation box is set to an open structure for the rope drum to be disassembled and installed, and a lever is fixed on the side of the rope drum away from the installation box; A tension sensor is provided at the connection between the pull rope and the pulling member, for real-time detection of the magnitude of the force applied by the pull rope to the pulling member; The locking structure includes a locking tooth groove arranged inside the installation box and a locking card block coaxially fixed with the rope drum. The locking card block is arranged in a T shape. When the force applied by the pull rope to the pulling member reaches a preset value, the locking card block is pushed into the locking tooth groove to fix the position of the rope drum; an elastic ring is arranged inside the locking tooth groove.

4. The orthopedic trauma traction device according to claim 3, characterized in that: The auxiliary locking structure includes a transmission gear ring and a gear. The transmission gear ring is fixedly arranged on the outer side wall of the rope drum. The transmission gear ring is meshed with the gear for transmission. The gear is rotatably installed on the main support frame. The gear is meshed with the rack for transmission. The rack sliding sleeve is arranged on two limit sleeves arranged on the main support frame, and the rack and the main support frame form a triangular structure. A wedge block is arranged on one side of the top of the U-shaped frame, an elastic layer is arranged on the vertical inner wall of the U-shaped frame, and a push block matched with the inclined surface of the wedge block is fixedly connected to one end of the rack away from the gear.

5. The orthopedic trauma traction device according to claim 4, characterized in that: Both ends of the wedge block are provided with protrusions, a spring is provided between the protrusion and the top of the U-shaped frame, a slot is provided at the top of the U-shaped frame, the bottom of the wedge block is slidably installed in the slot, and an inclined plate is provided at the bottom of the wedge block, and a gap is left between the elastic layer and the vertical inner wall of the U-shaped frame for the inclined plate to enter.

6. The orthopedic trauma traction device according to claim 3, characterized in that: The pulling assembly also includes an electric drive mechanism, which is connected to the winch drum in a transmission manner and is connected to the tension sensor signal; when the tension sensor detects that the force applied by the pull rope to the pulling member does not reach a preset value, the electric drive mechanism can automatically drive the winch drum to rotate and adjust the force applied to the pulling member; When the preset value is reached, the electric drive mechanism stops working and the locking structure starts at the same time.

7. The orthopedic trauma traction device according to claim 1, characterized in that: Locking parts include: A screw rod, the screw rod vertically passes through the top of the U-shaped frame and is threadedly connected to the U-shaped frame, and a rotating handle is fixed to the top of the screw rod; The bottom end of the screw is fixedly connected to the pressing plate. When the rotating handle is turned to move the screw downward, the pressing plate will gradually press the surface of the bed, thereby fixing the U-shaped frame on the bed by increasing the friction between the pressing plate and the bed.

8. The orthopedic trauma traction device according to claim 1, characterized in that: The bottom surface of the pressing plate is provided with a rubber anti-skid layer.

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