A traction device

Abstract

The utility model relates to orthopedics appliance related technical field especially, and more particularly to a kind of traction device, including traction assembly;One end of the traction assembly is equipped with take-up assembly, and the take-up assembly includes take-up box, is fixedly connected to one end of the traction assembly;Take-up motor is installed in the outside wall of the take-up box;Take-up reel is rotatably connected to the inside of the take-up box, one end is connected with the output shaft of the take-up motor;Traction cable is wound in the outside wall of the take-up reel;By setting take-up assembly, take-up assembly is composed of take-up box, take-up motor, take-up reel and traction cable, when traction, take-up reel is driven by take-up motor, so that the traction cable wound in the outside of take-up reel is taken up, and then combined with counterweight to form closed-loop control, can effectively avoid artificial adjustment error, ensure that traction force is stable, and take-up motor is worm reduction motor, with self-locking function, prevent accidental loosening.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic instruments, and in particular to a traction device. Background Technology

[0002] Bone traction involves directly pulling on the bone with a round needle to effectively reduce and fix fractures and dislocations. It is commonly used for patients with severe fracture swelling, wound infection, or severe bone comminutedness that precludes internal fixation. Methods include: skull traction, olecranon traction, supracondylar traction of the femur, tibial tuberosity traction, and calcaneal traction. Calcaneal traction is particularly useful for tibial condylar fractures, unstable tibial and fibular fractures, comminuted ankle fractures, posterior and superior displacement of the calcaneus, and knee flexion contracture deformities.

[0003] For example, Chinese utility model patent CN220385166U proposes a novel calcaneal traction device, including a traction bow. The traction bow has a U-shaped structure. Horizontal screw holes are provided on both the left and right sides of the rear part of the traction bow. Bone needles are threaded into both horizontal screw holes. The upper end of the front part of the traction bow has a first traction hole, a second traction hole, and a third traction hole that pass through vertically. The second traction hole is located between the first and third traction holes. The first and third traction holes are symmetrically arranged with the second traction hole as the center.

[0004] In existing technologies, traction devices mostly rely on manual adjustment of the length and tension of the traction cable, which makes it difficult to achieve precise control of traction force. Especially in medical traction scenarios, when patients need to frequently adjust the weight or angle, the operation is cumbersome and there is a risk of error. Utility Model Content

[0005] The purpose of this invention is to provide a traction device to solve the problems mentioned in the background art.

[0006] The technical solution adopted in this utility model is:

[0007] A traction device, comprising a traction assembly;

[0008] One end of the traction assembly is provided with a take-up and release assembly, which includes a take-up and release box fixedly connected to one end of the traction assembly; a take-up and release motor installed on the outer wall of the take-up and release box; a take-up and release reel rotatably connected to the inside of the take-up and release box, one end of which is connected to the output shaft of the take-up and release motor; and a traction cable wound around the outer wall of the take-up and release reel.

[0009] The cable reel assembly has a pulley assembly on one side, which is fixed to the end of the bed. The pulley assembly includes a pulley frame and a pulley, which is rotatably connected to the inner wall of the pulley frame and slidably connected to the outer wall of the traction cable.

[0010] One end of the traction cable is equipped with a counterweight.

[0011] Optionally, the traction assembly includes a traction bow; a bone pin disposed at one end of the traction bow; a connecting block disposed at the other end of the traction bow; a connecting rod fixedly connected to one end of the connecting block; and a fixing plate fixedly connected to one end of the connecting rod.

[0012] Optionally, the traction bow has a "U" shaped structure.

[0013] Optionally, the connecting block is connected to the traction bow via a plug-in connection.

[0014] Optionally, there are two connecting blocks and two connecting rods, which are symmetrically distributed.

[0015] Optionally, the take-up and release motor is a worm gear reducer motor.

[0016] Optionally, the pulley assembly further includes a mounting plate fixedly connected to the bottom of the pulley frame; a mounting rod fixedly connected to one side of the mounting plate; a mounting base fixedly connected to one end of the mounting rod; and a fixing bolt disposed on one side of the mounting base.

[0017] Optionally, there are two fixing bolts.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By setting up a take-up and release assembly, which consists of a take-up and release box, a take-up and release motor, a take-up and release reel, and a traction cable, the take-up and release motor drives the take-up and release reel during traction, causing the traction cable wound around the outside of the take-up and release reel to be taken up and released. Combined with the counterweight to form a closed-loop control, it can effectively avoid manual adjustment errors and ensure stable traction force. In addition, the take-up and release motor is a worm gear reducer motor with a self-locking function to prevent accidental loosening. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this application;

[0022] Figure 2 This is a schematic diagram of the traction component in this application;

[0023] Figure 3 This is a schematic diagram of the wire take-up and unwinding assembly in this application.

[0024] Figure 4 This is a schematic diagram of the pulley assembly in this application.

[0025] Figure label:

[0026] 10. Traction assembly; 11. Traction bow; 12. Bone pin; 13. Connecting block; 14. Connecting rod; 15. Fixation plate;

[0027] 20. Cable take-up and release assembly; 21. Cable take-up and release box; 22. Cable take-up and release motor; 23. Cable take-up and release reel; 24. Traction cable;

[0028] 30. Pulley assembly; 31. Pulley frame; 32. Pulley; 33. Mounting plate; 34. Mounting rod; 35. Mounting base; 36. Fixing bolts;

[0029] 40. Counterweight. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Given that current traction devices mostly rely on manual adjustment of the traction cable length and tension, it is difficult to achieve precise traction force control. Especially in medical traction scenarios, when patients need to frequently adjust the weight or angle, the operation is cumbersome and there is a risk of error.

[0033] like Figure 1-4 As shown, this utility model embodiment provides a traction device, including: a traction assembly 10, the traction assembly 10 including a traction bow 11; a bone needle 12 disposed at one end of the traction bow 11; a connecting block 13 disposed at the other end of the traction bow 11; a connecting rod 14 fixedly connected to one end of the connecting block 13; and a fixing plate 15 fixedly connected to one end of the connecting rod 14.

[0034] During installation, the bone pin 12 penetrates the skin and is fixed to the bone, the connecting block 13 is inserted into the end of the traction bow 11, and is locked to the external bracket through the fixing plate 15 to form a stable force chain;

[0035] One end of the traction assembly 10 is provided with a take-up and release assembly 20. The take-up and release assembly 20 includes a take-up and release box 21, which is fixedly connected to one end of the traction assembly 10; a take-up and release motor 22, which is installed on the outer wall of the take-up and release box 21; a take-up and release reel 23, which is rotatably connected to the inside of the take-up and release box 21, and one end of which is connected to the output shaft of the take-up and release motor 22; and a traction cable 24, which is wound around the outer wall of the take-up and release reel 23.

[0036] During the take-up and release of the cable, the output shaft of the take-up and release motor 22 drives the take-up and release wheel 23 inside the take-up and release box 21 to rotate. The traction length is adjusted by winding / releasing the traction cable 24 (the cable tightens when the motor rotates forward and releases when it rotates backward). The torque of the take-up and release motor 22 is amplified by the reduction mechanism to achieve precise tension control.

[0037] A pulley assembly 30 is provided on one side of the cable reel assembly 20. The pulley assembly 30 is fixed to the end of the bed. The pulley assembly 30 includes a pulley frame 31 and a pulley 32, which are rotatably connected to the inner wall of the pulley frame 31 and slidably connected to the outer wall of the traction cable 24.

[0038] After the traction cable 24 passes around the pulley 32, it changes direction, converting the horizontal traction force into a vertical tension force;

[0039] One end of the traction cable 24 is equipped with a counterweight 40;

[0040] The counterweight 40 provides traction force for the traction system.

[0041] Furthermore, the traction bow 11 has a "U" shaped structure, and the U-shaped design fits the calcaneus.

[0042] Furthermore, the connecting block 13 is connected to the traction bow 11 by a plug-in connection, which allows for quick installation of the connecting block 13.

[0043] Furthermore, there are two connecting blocks 13 and two connecting rods 14. The two connecting blocks 13 and two connecting rods 14 are symmetrically distributed. The traction force is dispersed by the two symmetrically distributed connecting blocks 13 and two connecting rods 14 to avoid local stress concentration.

[0044] Furthermore, the take-up and release motor 22 is a worm gear reducer motor, which has a self-locking function to prevent the traction cable from retracting due to gravity or external force, thus ensuring stable traction force.

[0045] Furthermore, the pulley assembly 30 also includes a mounting plate 33, which is fixedly connected to the bottom of the pulley frame 31; a mounting rod 34, which is fixedly connected to one side of the mounting plate 33; a mounting base 35, which is fixedly connected to one end of the mounting rod 34; and a fixing bolt 36, which is provided on one side of the mounting base 35. By setting the mounting plate 33, the mounting rod 34, the mounting base 35 and the fixing bolt 36, the pulley assembly 30 can be installed as a whole onto the bed board.

[0046] Furthermore, there are two fixing bolts 36, and the double fixing bolts 36 enhance the installation stability.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A traction device, comprising: Traction assembly (10); The feature is that one end of the traction assembly (10) is provided with a take-up and release assembly (20), the take-up and release assembly (20) comprising: A take-up and release box (21) is fixedly connected to one end of the traction assembly (10); A take-up and release motor (22) is installed on the outer wall of the take-up and release box (21); The take-up and release reel (23) is rotatably connected to the inside of the take-up and release box (21), and one end is connected to the output shaft of the take-up and release motor (22); The traction cable (24) is wound around the outer wall of the take-up and release reel (23); The cable reel assembly (20) has a pulley assembly (30) on one side, which is fixed to the end of the bed. The pulley assembly (30) includes: Pulley frame (31); The pulley (32) is rotatably connected to the inner wall of the pulley frame (31), and its outer wall is slidably connected to the outer wall of the traction cable (24). One end of the traction cable (24) is provided with a counterweight (40).

2. A traction device according to claim 1, characterized in that, The traction assembly (10) includes: Traction bow (11); Bone needle (12) is disposed at one end of the traction bow (11); A connecting block (13) is disposed at the other end of the traction bow (11); A connecting rod (14) is fixedly connected to one end of the connecting block (13); A fixing plate (15) is fixedly connected to one end of the connecting rod (14).

3. A traction device according to claim 2, characterized in that, The traction bow (11) has a "U" shaped structure.

4. A traction device according to claim 2, characterized in that, The connecting block (13) is connected to the traction bow (11) by plugging in.

5. A traction device according to claim 2, characterized in that, There are two connecting blocks (13) and two connecting rods (14), which are symmetrically distributed.

6. A traction device according to claim 1, characterized in that, The take-up and release motor (22) is a worm gear reducer motor.

7. A traction device according to claim 1, characterized in that, The pulley assembly (30) also includes: Mounting plate (33) is fixedly connected to the bottom of the pulley frame (31); The mounting rod (34) is fixedly connected to one side of the mounting plate (33); Mounting base (35) is fixedly connected to one end of the mounting rod (34); A fixing bolt (36) is provided on one side of the mounting base (35).

8. A traction device according to claim 7, characterized in that, There are two fixing bolts (36).

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