Reduction bone joint tractor

Abstract

The utility model relates to the technical field of medical instruments, in particular to a reduction bone joint tractor which comprises a fixing frame, a first pneumatic driving rod is installed on the inner side of the fixing frame, an installation frame is fixedly installed at one end of the first pneumatic driving rod, and a second pneumatic driving rod is rotationally connected to the outer side of the same end of the first pneumatic driving rod. The upper end of the second pneumatic driving rod is rotationally connected with a winding adjusting mechanism used for adjusting the tensioning degree of the elastic rope, and a mounting base is mounted on the surface of the winding adjusting mechanism and used for loading a supporting base plate. The winding adjusting mechanism comprises a mounting shell, an inner sleeve is mounted on the inner side of the mounting shell, and one side of the inner sleeve is connected with a driving assembly; a constraint monitoring assembly is installed on the inner side of the inner sleeve, the tail end of the elastic rope is connected with an installation hook, and the installation hook is connected with a hook ring of the leg fixing sleeve. According to the utility model, changes of traction force values can be monitored in real time, changes of traction force values and angles can be carried out cooperatively, and tedious adjustment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a bone and joint reduction traction device. Background Art

[0002] Reduction is a treatment method that uses manual techniques or manual techniques as the main method, with the help of instruments, to restore displaced bones and muscles to their original positions. It is widely used in the fields of bone and muscle injuries and plastic surgery.

[0003] Traction therapy is a commonly used treatment for osteoarthritis. Its primary goal is to restore the position and stability of fractured or dislocated joints. Traction therapy helps relieve soft tissue tension and retraction, reduce inflammatory exudate and pain, and promote swelling reduction in the affected limb. It is primarily used for the reduction and fixation of fractures and dislocations, as well as for orthopedic treatment.

[0004] Bone and joint traction usually requires fixing a traction device to the bones around the joint, and then using the traction device to apply force to relieve joint pressure and promote joint recovery.

[0005] There are many common weight distribution methods for bone and joint traction, including sliding weight traction, fixed weight traction, and traction bed traction.

[0006] Sliding weight traction utilizes the elasticity of a wire or rubber band to achieve traction, with the traction force adjusted by the weight of a weight attached to the traction hook. This method allows for the traction force to be adjusted by increasing or decreasing the weight of the weight at any time, depending on the patient's response and treatment needs. However, the resulting weight adjustment method is not flexible enough, and the weight is placed externally, making it susceptible to contact and collision with outside personnel.

[0007] Fixed-weight traction involves attaching a weight to the traction device and adjusting the traction force by changing the angle between the traction device and the ground. This method is relatively simple, but the traction force adjustment is relatively fixed and not flexible enough.

[0008] Traction bed traction uses electric or hydraulic machinery to generate traction force, and the magnitude of the traction force is controlled by adjusting the mechanical parameters. This method can accurately control the magnitude of the traction force and is more comfortable for the patient.

[0009] For the above three traction methods, after obtaining the size of the traction force, medical staff generally need to adjust the traction angle according to the patient's traction position and adjust the traction force in time. In the subsequent treatment of the patient's legs, after the angle changes with the progress of the treatment, it is necessary to coordinate the adjustment of other pulley positions and counterweights. Manual adjustment is not only cumbersome, but also has an inaccurate grasp of the counterweight and angle, which may cause the problem of inadequate traction.

[0010] Therefore, there is an urgent need for a bone joint distraction device that can be accurately controlled. Utility Model Content

[0011] In view of the above-mentioned shortcomings of the prior art, the present invention provides a bone and joint correction traction device, which can effectively solve the problem of inaccurate control of weight and angle during manual adjustment in the prior art.

[0012] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0013] The utility model provides a bone and joint correction traction device, comprising:

[0014] A fixing frame, a first pneumatic drive rod is mounted on the inner side of the fixing frame, one end of the first pneumatic drive rod is fixedly mounted with a mounting frame, a second pneumatic drive rod is rotatably connected to the outer side of the same end of the first pneumatic drive rod, an upper end of the second pneumatic drive rod is rotatably connected to a winding adjustment mechanism for adjusting the tension of the elastic rope, and a mounting seat is mounted on the surface of the winding adjustment mechanism for loading a support pad;

[0015] The winding adjustment mechanism includes a mounting shell, an inner sleeve is mounted on the inner side of the mounting shell, and one side of the inner sleeve is connected to the driving assembly;

[0016] A restraint monitoring assembly is installed on the inner side of the inner sleeve, wherein:

[0017] The restraint monitoring assembly includes a restraint positioning rod, a restraint sleeve is installed in the middle of the restraint positioning rod, and a monitoring mechanism is installed on the inner side of the restraint sleeve. A restraint block fixed to the outside of the restraint sleeve is provided on the outer side of the monitoring mechanism. An elastic rope is wrapped around the outer side of the restraint sleeve. The monitoring mechanism includes a pressure sensor for monitoring the pressure between the elastic rope and the restraint sleeve.

[0018] A wire harness traction machine is installed on the outside of the installation shell, and one end of the elastic rope is connected to the wire harness traction machine for regulating the retraction and extension of the elastic rope;

[0019] The end of the elastic rope is connected to the installation hook, and the installation hook is connected to the hook and loop of the leg fixing sleeve.

[0020] Preferably, a protruding structure is provided on the outer side of the inner sleeve, and the outer end of the protruding structure is connected to the transmission belt. An outer sleeve is provided on the other side of the transmission belt. Both the outer sleeve and the inner sleeve form a sliding connection with the groove structure opened in the mounting shell.

[0021] Preferably, an auxiliary positioning rod is installed on the inner side of the outer sleeve to cooperate with the movement of the constrained positioning rod to change the tension of the elastic rope.

[0022] Preferably, a coordination mechanism is provided at a corresponding position of the mounting shell for supporting one end of the auxiliary positioning rod and the constraint positioning rod.

[0023] Preferably, the elastic rope is wound around the outside of the auxiliary positioning rod for several times, and then wound to the outside of the restraint sleeve, and fits against the outside of the monitoring mechanism.

[0024] Preferably, an auxiliary monitoring component is further installed at the connection between the mounting hook and the elastic rope, and the auxiliary monitoring component includes an electronic dynamometer for monitoring the tension between the mounting hook and the elastic rope.

[0025] Beneficial effects

[0026] Compared with the known public technologies, the technical solution provided by this utility model has the following beneficial effects:

[0027] The utility model can monitor the change of the traction value in real time, and coordinate the change of the traction value and the angle, thus avoiding tedious adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0029] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0030] Figure 2 This is a three-dimensional schematic diagram of the connection between the constraint monitoring component and the winding adjustment mechanism in the present invention;

[0031] Figure 3 This is a cross-sectional diagram of the winding adjustment mechanism in the utility model;

[0032] Figure 4 This is an exploded diagram of the restraint monitoring assembly in the present invention;

[0033] Figure 5 This is a front view of the support plate of the present invention when it is placed horizontally;

[0034] Figure 6 For the utility model Figure 5 A in the middle is an enlarged structural diagram;

[0035] Figure 7 Schematic diagram of two winding methods of the elastic rope in the present invention.

[0036] Reference numerals

[0037] 1. Fixing frame; 2. First pneumatic drive rod; 3. Mounting frame; 4. Second pneumatic drive rod; 5. Winding adjustment mechanism; 501. Mounting shell; 502. Drive belt; 503. Outer sleeve; 504. Inner sleeve; 6. Coordinating mechanism; 7. Mounting seat; 8. Auxiliary positioning rod; 9. Constraint monitoring assembly; 901. Constraint positioning rod; 902. Constraint sleeve; 903. Constraint block; 904. Monitoring mechanism; 10. Wire harness traction machine; 11. Support pad; 12. Bed board; 13. Elastic rope; 14. Mounting hook; 15. Auxiliary monitoring assembly. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0039] The present invention will be further described below with reference to the embodiments.

[0040] Example:

[0041] A bone and joint traction device, such as Figure 1 、 Figure 2 As shown, it includes a fixing frame 1, a first pneumatic drive rod 2 is installed on the inner side of the fixing frame 1, one end of the first pneumatic drive rod 2 is fixedly installed with a mounting frame 3, the same end of the first pneumatic drive rod 2 is rotatably connected to the outside of the second pneumatic drive rod 4, the upper end of the second pneumatic drive rod 4 is rotatably connected to a winding adjustment mechanism 5 for adjusting the tension of the elastic rope 13, thereby controlling the traction force, and the lower end of the winding adjustment mechanism 5 is rotatably connected to the other end of the mounting frame 3, so that the mounting frame 3, the second pneumatic drive rod 4 and the winding adjustment mechanism 5 form a triangular installation mode, and a mounting seat 7 is installed on the surface of the winding adjustment mechanism 5 for loading a support pad 11, and the support pad 11 is rotatably connected to the mounting seat 7 to facilitate adjustment of the angle between the support pad 11 and the bed board 12;

[0042] like Figure 3As shown, the winding adjustment mechanism 5 includes a mounting shell 501, and an inner sleeve 504 is mounted on the inner side of the mounting shell 501. One side of the inner sleeve 504 is connected to a driving assembly, and the driving assembly can adopt a pneumatic telescopic rod. A protrusion structure is provided on the outer side of the inner sleeve 504, and the outer end of the protrusion structure is connected to the transmission belt 502. An outer sleeve 503 is provided on the other side of the transmission belt 502. The outer sleeve 503 and the inner sleeve 504 are both slidably connected with the groove structure provided in the mounting shell 501, so that when the inner sleeve 504 moves, the transmission belt 502 can drive the outer sleeve 503 to move in the opposite direction to the inner sleeve 504, thereby changing the distance between the outer sleeve 503 and the inner sleeve 504.

[0043] A coordination mechanism 6 is provided at a corresponding position of the mounting housing 501 for supporting the auxiliary positioning rod 8 and one end of the constraining positioning rod 901;

[0044] like Figure 4 As shown, an auxiliary positioning rod 8 is installed on the inner side of the outer sleeve 503, and a constraint monitoring assembly 9 is installed on the inner side of the inner sleeve 504. The change in the distance between the outer sleeve 503 and the inner sleeve 504 will cause the distance between the auxiliary positioning rod 8 and the constraint monitoring assembly 9 to change. The constraint monitoring assembly 9 includes a constraint positioning rod 901, a constraint sleeve 902 is installed in the middle of the constraint positioning rod 901, and a monitoring mechanism 904 is installed on the inner side of the constraint sleeve 902. The outer side of the monitoring mechanism 904 is provided with a constraint block 903 fixed to the outside of the constraint sleeve 902. An elastic rope 13 is wound around the outside of the restraint sleeve 902. The monitoring mechanism 904 includes a pressure sensor for monitoring the pressure between the elastic rope 13 and the restraint sleeve 902. A wire harness tractor 10 is installed on the outside of the mounting housing 501. One end of the elastic rope 13 is connected to the wire harness tractor 10 for regulating the retraction and extension of the elastic rope 13. The positioning effect of the wire harness tractor 10 after installation is utilized to further increase the positioning strength between the winding adjustment mechanism 5 and the cooperative mechanism 6. The cooperative mechanism 6 is the same as the winding adjustment mechanism 5, but does not have a drive adjustment function.

[0045] In one embodiment, Figure 7 As shown, the elastic rope 13 extending from the harness tractor 10 is wrapped around the outside of the auxiliary positioning rod 8 for several turns, and then wrapped around the outside of the restraint block 903. Specifically, the elastic rope 13 penetrates into the restraint block 903 and fits against the outside of the monitoring mechanism 904, so that the pressure sensor can monitor the pressure between the elastic rope 13 and the outside of the restraint sleeve 902.

[0046] In another winding method, such as Figure 7 In the diagram of example b, the orientation of the restraint block 903 is changed, and the winding direction of the elastic rope 13 is changed. This example is suitable for a large elevation of the patient's leg, such as traction at the femoral position;

[0047] Finally, the end of the elastic rope 13 is connected to the installation hook 14, and the installation hook 14 is connected to the hook and loop of the leg fixing sleeve, thereby forming a bone joint traction device;

[0048] In this case, to ensure the accuracy of the monitoring values, Figure 6 As shown, an auxiliary monitoring component 15 is also installed at the connection between the mounting hook 14 and the elastic rope 13. The auxiliary monitoring component 15 includes an electronic dynamometer for monitoring the tension between the mounting hook 14 and the elastic rope 13. The tension data detected by the auxiliary monitoring component 15 is equal to the traction force data generated by the mounting hook 14 on the patient's leg, and is not restricted by the traction angle, so the numerical change of the traction force of the mounting hook 14 can be intuitively felt.

[0049] In one embodiment, Figure 5 In the embodiment, the upper surface of the fixing frame 1 is fitted with the lower surface of the bed board 12. After the patient's legs are restrained by the leg fixing sleeves, if double leg restraint is required, another traction device is installed on the other side. After the bone needle or Kirschner wire is inserted and positioned, the mounting hook 14 is connected to the hook ring of the leg fixing sleeve, and then the second pneumatic drive rod 4 is started to lift the winding adjustment mechanism 5 to a corresponding angle. The lifting angle is related to the puncture position of the patient's leg, and at the same time, the angle between the support pad 11 and the bed board 12 is adjusted to make the patient's legs tilt to an appropriate degree. Then, the drive assembly installed at one end of the inner sleeve 504 is started to move the constraint monitoring assembly 9 as a whole to an appropriate position, so that the tilt angle of the mounting hook 14 is the same as the tilt angle of the support pad 11.

[0050] At the same time, during the movement of the restraint monitoring component 9, the tension of the elastic rope 13 will change, thereby causing the traction force of the installation hook 14 to change. At this time, when the traction force of the installation hook 14 becomes greater, the harness tractor 10 is started to implement the wire-releasing operation. When the traction force of the installation hook 14 becomes smaller, the harness tractor 10 is started to implement the wire-reeling operation, so that the data detected by the electronic dynamometer in the auxiliary monitoring component 15 returns to the preset value, which is generally 1 / 7 to 1 / 8 of the patient's body weight.

[0051] Compared with the existing conventional adjustment, the above adjustment method can monitor the changes in traction force values in real time, and at the same time prevent the movement of people around the patient's bed, which may cause collisions with the counterweight device used in conventional adjustment and cause changes in traction force, causing unnecessary pain to the patient and re-calibration of traction force. It can also flexibly adjust the angle and position, and the change process reduces the contact and force applied by medical staff on the patient, thereby reducing the possible dislocation of the patient's bone position caused by the force applied.

[0052] In specific applications, the range of the above traction weight needs to be adjusted according to the actual situation of the patient. The data range of 1 / 7 to 1 / 8 of the patient's body weight is only the conventional traction weight.

[0053] In a specific embodiment, during the rehabilitation process, especially in the early stages of traction therapy, patients usually require a large traction force to stabilize the fracture site and promote fracture healing. As rehabilitation progresses, the stability of the fracture site will gradually increase. At this time, the traction force needs to be gradually reduced to avoid excessive pressure or damage to the surrounding tissues. Therefore, in subsequent traction therapy, based on the data feedback from the auxiliary monitoring component 15, the distance between the auxiliary positioning rod 8 and the constraint monitoring component 9 is gradually reduced to reduce the traction force.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A bone and joint traction device, characterized in that: include: A fixing frame (1), a first pneumatic drive rod (2) is installed on the inner side of the fixing frame (1), a mounting frame (3) is fixedly installed on one end of the first pneumatic drive rod (2), a second pneumatic drive rod (4) is rotatably connected to the outer side of the same end of the first pneumatic drive rod (2), an upper end of the second pneumatic drive rod (4) is rotatably connected to a winding adjustment mechanism (5) for adjusting the tension of an elastic rope (13), and a mounting seat (7) is installed on the surface of the winding adjustment mechanism (5) for loading a support pad (11); The winding adjustment mechanism (5) comprises a mounting shell (501), an inner sleeve (504) is mounted on the inner side of the mounting shell (501), and one side of the inner sleeve (504) is connected to the driving assembly; A restraint monitoring assembly (9) is mounted on the inner side of the inner sleeve (504), wherein: The restraint monitoring assembly (9) comprises a restraint positioning rod (901), a restraint sleeve (902) is installed in the middle of the restraint positioning rod (901), a monitoring mechanism (904) is installed on the inner side of the restraint sleeve (902), a restraint block (903) fixed to the outside of the restraint sleeve (902) is provided on the outer side of the monitoring mechanism (904), an elastic rope (13) is wound around the outer side of the restraint sleeve (902), and the monitoring mechanism (904) comprises a pressure sensor for monitoring the pressure between the elastic rope (13) and the restraint sleeve (902); A wire harness tractor (10) is installed outside the installation housing (501), and one end of the elastic rope (13) is connected to the wire harness tractor (10) for regulating the retraction and extension of the elastic rope (13); The end of the elastic rope (13) is connected to the installation hook (14), and the installation hook (14) is connected to the hook and loop of the leg fixing sleeve.

2. The bone and joint reduction traction device according to claim 1, characterized in that: A protruding structure is provided on the outer side of the inner sleeve (504), and the outer end of the protruding structure is connected to the transmission belt (502). An outer sleeve (503) is provided on the other side of the transmission belt (502). The outer sleeve (503) and the inner sleeve (504) are both slidably connected to the groove structure provided in the mounting shell (501).

3. The bone and joint reduction traction device according to claim 2, characterized in that: An auxiliary positioning rod (8) is installed on the inner side of the outer sleeve (503) for cooperating with the movement of the constrained positioning rod (901) to change the tension of the elastic rope (13).

4. The bone and joint reduction traction device according to claim 3, characterized in that: A coordination mechanism (6) is provided at a corresponding position of the mounting housing (501) for supporting the auxiliary positioning rod (8) and one end of the constraint positioning rod (901).

5. The bone and joint correction traction device according to claim 4, characterized in that: The elastic rope (13) is wound around the outside of the auxiliary positioning rod (8) for several turns, and then wound around the outside of the restraining sleeve (902), and fits with the outside of the monitoring mechanism (904).

6. The bone and joint reduction traction device according to claim 1, characterized in that: An auxiliary monitoring component (15) is also installed at the connection between the installation hook (14) and the elastic rope (13). The auxiliary monitoring component (15) includes an electronic tension meter for monitoring the tension between the installation hook (14) and the elastic rope (13).

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