CN219374872U

CN219374872U - Calcaneus traction fixing device

Info

Publication number: CN219374872U
Application number: CN202320419165.7U
Authority: CN
Inventors: 庄敏; 董莉妮; 施麓静
Original assignee: Shanghai Yuncheng Anhua Biotechnology Co ltd
Current assignee: Shanghai Yuncheng Anhua Biotechnology Co ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-07-21
Anticipated expiration: 2033-03-08

Abstract

The utility model provides a calcaneus traction fixing device, and belongs to the technical field of medical appliances. The device of the utility model comprises: a traction bottom shell with a first cavity; the bottom plate is arranged on one side of the traction bottom shell, which is away from the first cavity, and the bottom plate and the traction bottom shell are surrounded to form a second cavity; the traction movable assembly is movably arranged in the first cavity; the steel needle is arranged on the traction movable assembly, and the traction force providing assembly is arranged in the second cavity to provide traction force for the traction movable assembly. The device adopts the built-in design of the traction component, has small design structure and stable performance, is not easy to be interfered by external environment, misoperation and other conditions of hurting patients, and solves the problems that nursing staff is inconvenient to operate, the design structure is unstable, the patient is uncomfortable to put in position, traction force cannot be applied to the lower limbs of the patient before operation and pain is generated when the lower limbs of the patient are recovered or the patient is fixed and maintained before operation.

Description

Calcaneus traction fixing device

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a calcaneus traction fixing device.

Background

Calcaneus traction is a common technique of orthopaedics and is mainly applicable to calf fracture, tibia instability fracture, tibia plateau fracture, ankle comminuted fracture and pilon fracture. The technique has important significance for the reduction of the fracture before operation, the reduction difficulty in the operation process, the reduction of sequelae such as poor healing of the fracture after operation, poor healing of deformity and poor reduction of the operation and the like, and is prepared in the operation period. Although the traction technology is widely applied to orthopaedics, the existing calcaneus traction device mostly adopts the pulley weight design due to the traction fixing instrument used, and has the defects of traditional structure, inconvenient use, large occupied space, discomfort in placing the lower leg of a patient and the like.

Therefore, aiming at the technical problems, the utility model provides a novel calcaneus traction fixing device, which provides a small, portable and structurally stable design direction for the calcaneus traction fixing device for the rehabilitation of lower limb operation of patients and the fixation of patients before operation.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provides a calcaneus traction fixing device.

The utility model provides a calcaneus traction fixing device, which comprises:

a traction bottom shell with a first cavity;

the bottom plate is arranged on one side of the traction bottom shell, which is away from the first cavity, and the bottom plate and the traction bottom shell are surrounded to form a second cavity;

a traction movable assembly movably disposed in the first cavity;

a steel needle arranged on the traction movable component,

and the traction force providing assembly is arranged in the second cavity and used for providing traction force for the traction movable assembly.

Optionally, the traction providing assembly includes a plurality of constant force wrap springs, a plurality of constant force wrap spring shafts, a plurality of traction ropes, and a plurality of traction wheelsets having different traction forces; the traction bottom shell is provided with a first connecting hole for communicating the first cavity with the second cavity;

the first end of the constant force coil spring is fixed at one end of the second cavity through the corresponding constant force coil spring shaft, and the second end is connected with the traction rope;

the first end of the traction rope is coiled on the first end of the constant force coil spring, the second end of the traction rope is fixed on the other end of the second cavity through the corresponding traction wheel group, the traction rope penetrates through the first cavity from the first connecting hole, and a traction piece acting on the traction movable assembly is further arranged at the second end of the traction rope.

Optionally, a retaining block is further accommodated in the first connecting hole, a second connecting hole is formed in the retaining block in a penetrating mode, the cross section area of the second connecting hole is smaller than the size of the traction piece, and the traction rope is arranged in the second connecting hole in a penetrating mode.

Optionally, the traction movable assembly comprises a sliding rail, a sliding block, a linear traction block and a U-shaped frame; wherein,,

the sliding rail is arranged on the traction bottom shell, and the sliding block is slidably arranged on the sliding rail;

the linear traction block is connected with the sliding block, the U-shaped frame is arranged on the linear traction block, and the steel needle is arranged on the U-shaped frame;

and a plurality of traction holes are formed in the linear traction block in a penetrating manner, and each traction piece is arranged in the corresponding traction hole when traction is required.

Optionally, the traction moving assembly further comprises a U-shaped frame rotating member; the linear traction block is also provided with a first mounting hole in a penetrating way;

one end of the U-shaped frame rotating piece is rotatably installed in the first installation hole, and the other end of the U-shaped frame rotating piece is connected with the U-shaped frame.

Optionally, the traction movable assembly further comprises a U-shaped frame swinging shaft, and the U-shaped frame rotating piece is provided with a mounting groove and a second mounting hole;

the end of the U-shaped frame is accommodated in the mounting groove, a third mounting hole is formed in the end of the U-shaped frame in a penetrating mode, and the U-shaped frame swinging shaft sequentially penetrates through the second mounting hole and the third mounting hole.

Optionally, the device further comprises two steel needle locking assemblies, one end of the steel needle is fixed between one steel needle locking assembly and one side of the U-shaped frame, and the other end of the steel needle is fixed between the other steel needle locking assembly and the other side of the U-shaped frame.

Optionally, the steel needle locking assembly comprises a locking block, a positioning piece, a locking rod and a locking piece; the supporting arm of the U-shaped frame is provided with a plurality of adjusting holes;

the locking block is attached to the supporting arm, and a positioning hole, a locking hole and a containing groove are formed in one side, facing the supporting arm, of the locking block;

the steel needle is clamped in the accommodating groove of the locking block;

the two ends of the positioning piece are respectively penetrated in the positioning hole and the adjusting hole;

one end of the locking rod penetrates through the locking hole, and the other end of the locking rod penetrates through the adjusting hole and is connected with the locking piece to lock the locking piece on the U-shaped frame.

Optionally, a steel needle guiding part is arranged on the locking block, and the steel needle guiding part inclines from the end part of the locking block to one side of the U-shaped frame so as to guide the steel needle to fall into the accommodating groove of the locking block.

Optionally, the device further comprises a leg pad disposed on the base plate and disposed adjacent to the traction pan.

The utility model provides a calcaneus traction fixing device, which comprises: a traction bottom shell with a first cavity; the bottom plate is arranged on one side of the traction bottom shell, which is away from the first cavity, and the bottom plate and the traction bottom shell are surrounded to form a second cavity; the traction movable assembly is movably arranged in the first cavity; the steel needle is arranged on the traction movable assembly, and the traction force providing assembly is arranged in the second cavity to provide traction force for the traction movable assembly. The device adopts the built-in design of the traction component, has small design structure and stable performance, is not easy to be interfered by external environment, misoperation and other conditions of hurting patients, and solves the problems that nursing staff is inconvenient to operate, the design structure is unstable, the patient is uncomfortable to put in position, traction force cannot be applied to the lower limbs of the patient before operation and pain is generated when the lower limbs of the patient are recovered or the patient is fixed and maintained before operation.

Drawings

FIG. 1 is a schematic view showing the overall structure of a calcaneus traction fixation device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a calcaneus traction fixation device according to another embodiment of the present utility model;

FIG. 3 is a schematic view of a traction providing assembly according to another embodiment of the present utility model;

FIG. 4 is a schematic view showing a horizontal sliding of a calcaneus traction fixation device according to another embodiment of the present utility model;

FIG. 5 is a rotational schematic view of a calcaneus traction fixation device according to another embodiment of the present utility model;

FIG. 6 is a schematic side view of a calcaneus traction fixation device according to another embodiment of the present utility model;

FIG. 7 is a schematic view of a steel needle clip according to another embodiment of the present utility model;

fig. 8 is a schematic view of an application of a calcaneus traction fixation device according to another embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail below with reference to the drawings and detailed description for the purpose of better understanding of the technical solution of the present utility model to those skilled in the art. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model belong to the protection scope of the present utility model.

Unless specifically stated otherwise, technical or scientific terms used herein should be defined in the general sense as understood by one of ordinary skill in the art to which this utility model belongs. The use of "including" or "comprising" and the like in the present utility model is not intended to limit the shape, number, step, action, operation, component, original and/or group thereof referred to, nor exclude the presence or addition of one or more other different shapes, numbers, steps, actions, operations, components, original and/or group thereof. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order of the indicated features.

In some descriptions of the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," or "fixed" and the like are not limited to a physical or mechanical connection, but may include an electrical connection, whether direct or indirect through an intervening medium, that is internal to two elements or an interaction relationship between the two elements. And, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, are used only to indicate a relative positional relationship, which may be changed when the absolute position of the object to be described is changed, accordingly.

As shown in fig. 1 to 3, the present utility model provides a calcaneus traction fixing device, comprising: the traction device comprises a bottom plate 1, a traction bottom shell 2, a traction movable assembly, a steel needle 25 and a traction force providing assembly; the traction bottom shell 2 is provided with a first cavity, the bottom plate 1 is arranged on one side of the traction bottom shell 2, which is away from the first cavity, namely, the bottom plate 1 is arranged below the traction bottom shell 2, and the bottom plate 1 and the traction bottom shell 2 are enclosed to form a second cavity; the traction movable assembly is movably arranged in the first cavity; the steel needle 25 is disposed on the traction moving assembly and the traction providing assembly is disposed in the second cavity to provide traction to the traction moving assembly. That is, when the patient's calcaneus needs to be pulled, the patient's calcaneus is fixed on the steel needle, the steel needle is fixed on the pulling movable assembly, and the pulling movable assembly is pulled by the pulling force providing assembly.

The traction force providing assembly is built in the traction bottom shell by adopting the built-in design, the traction movable assembly and the steel needle are arranged above the traction bottom shell, the whole structure of the device is small and exquisite, the performance is stable, the constant tension force on the lower leg of a patient can be realized, the damping-free effect is realized, and the situation that the patient is injured by external environment interference, misoperation and the like is not easy to happen.

Specifically, as shown in fig. 1 to 3, the traction force providing assembly includes a plurality of constant force coil springs 3 having different traction forces, a plurality of constant force coil spring shafts 4, a plurality of sliding square tubes 5, a plurality of traction ropes 9, a plurality of traction wheel groups; wherein a first end of the constant force coil spring 3 is fixed to one end of the second cavity by a constant force coil spring shaft 4, and a second end of the constant force coil spring 3 is connected with the traction rope 9. In addition, a first connecting hole for communicating the first cavity with the second cavity is formed in the traction bottom shell 2; the first end of the traction rope 9 is coiled on the first end of the constant force coil spring 3, the second end of the traction rope 9 is fixed on the other end of the second cavity through a corresponding traction wheel set and penetrates out of the first cavity from the first connecting hole, and a traction piece acting on the traction movable assembly is further arranged on the second end of the traction rope 9. That is, the traction rope realizes traction of the traction movable assembly by being wound on the constant force coil spring.

It should be noted that the number and the traction force of the constant force coil springs are not particularly limited, and the constant force coil springs can be specifically set according to actual needs, for example, four constant force coil springs with different traction forces are respectively set, and of course, other numbers of constant force coil springs can be set.

It should be further noted that the structure and number of the traction wheel sets are not limited in particular, and may include only one traction wheel set, or may include two traction wheel sets, where, as shown in fig. 2 and 3, the traction wheel sets include a pulley 6 and a pulley shaft 7 penetrating the pulley 6.

It should be noted that the present utility model is not limited to the traction rope and the traction member, for example, the traction rope may be a steel wire rope, the traction member may be a hook, and the two may be an integral body, that is, a steel wire hook.

The traction piece can adopt a hook structure, can freely move, and is convenient for medical staff to carry out hanging operation.

As shown in fig. 2 and 3, for example, four constant force coil springs 3 respectively providing 1kg,2kg,4kg and 5kg are provided at the inner front end of the traction bottom shell 2, and are sequentially passed through and fixed to the traction bottom shell 2 by a constant force coil spring shaft 4, and the tension end of the constant force coil spring 3 is connected with the tail end of the traction rope 9 in a sliding square tube 5. Two groups of pulley blocks are arranged at the rear end inside the traction bottom shell 2, each group of pulley blocks is provided with four pulleys 6 which are fixed on the traction bottom shell 2 by pulley shafts 7, and a traction rope 9 is arranged in a groove of each pulley 6.

It should be noted that, since the traction force is exposed in the first cavity, a different traction force can be marked on each traction member (hook), so that the use is convenient.

Further, as shown in fig. 2 and 3, the connecting hole is internally provided with a traction rope retaining block 8, a second connecting hole is arranged on the traction rope retaining block 8 in a penetrating manner, the cross section of the second connecting hole is smaller than the size of the traction piece, and the traction rope 9 is arranged in the second connecting hole in a penetrating manner. That is, the traction rope stop block 8 is arranged at the head end side of the traction piece 9, when the traction piece (e.g. a hook) is in an unused state, the traction piece is placed in the hole position groove of the traction bottom shell 2, the traction rope 9 close to one end of the traction piece is clamped, the traction rope end is prevented from being clamped into the hole position groove of the traction bottom shell 2 by the tension force of the constant force coil spring 3, the traction piece can be ensured to freely move, and the hanging operation of medical staff is facilitated.

Based on the traction force providing assembly provided by the utility model, the traction force can be controlled and adjusted through the combined design of a plurality of different constant force coil springs so as to meet the requirements of different traction forces, and in addition, the provided traction force value is accurate, so that the constant and undamped effect of the calf tension of a patient can be realized.

Still further, as shown in fig. 1 to 4, the traction movable assembly includes a slide rail 12, a slider 14, a linear traction block 17, a U-shaped frame 21; wherein the sliding rail 12 is connected with the traction bottom shell 2 through a sliding rail screw 13, and a sliding block 14 is slidably arranged on the sliding rail 12; the linear traction block 17 is connected with the sliding block 14 through the linear traction block screw 19, the U-shaped frame 21 is arranged on the linear traction block 17, and the steel needle 25 is arranged on the U-shaped frame 21, so that the horizontal sliding of the traction movable assembly on the sliding rail 12 can be realized.

Further, as shown in fig. 1 to 4, the linear traction block 17 is provided with a plurality of traction holes 17a, and traction members are placed in the traction holes 17a when traction is required. That is, when four traction members are provided, four traction holes are provided on the linear traction block 17, and when traction is required, each traction member is placed in each traction hole 17 a.

By way of example, with continued reference to fig. 1 to 4, based on the fact that in the previous embodiment four 1kg,2kg,4kg,5kg constant force coil springs 3 are provided, so that the wire hooks marked 1kg,2kg,4kg,5kg can be respectively/combined/simultaneously hung in the traction holes 17a of the linear traction block 17, the application of a constant traction force along the patient's foot, with the steel needle 25 driving the patient's calcaneus, with an index of 1 kg-15 kg, is achieved, i.e. the traction mobile assembly slides in a horizontal direction to the right end of the traction bottom shell, as indicated by B in fig. 4. By removing the wire hooks marked 1kg,2kg,4kg,5kg respectively/in combination/simultaneously in the traction holes 17a of the linear traction block 17, a reduction of the constant traction along the patient's foot, with 1 kg-15 kg indexing of the patient's calcaneus by the steel needle 25, i.e. a sliding of the traction mobile assembly in horizontal direction to the left end of the traction bottom shell, is achieved, as indicated by a in fig. 4.

It should be understood that the U-shaped frame generally includes a connection portion at a lower end and support arms connected to the connection portion and located on both sides.

Further, as shown in fig. 1 to 3 and 5, the traction moving assembly further comprises a U-shaped frame rotating member; and, the straight line traction block 17 is provided with a first mounting hole in a penetrating way; one end of the U-shaped frame rotating member is rotatably installed in the first installation hole, and the other end of the U-shaped frame rotating member is connected to the connection portion of the U-shaped frame 21 so that the U-shaped frame can rotate in the horizontal direction, as shown by a in fig. 5, in an unrotated state, as shown by B in fig. 5, in a horizontally rotated state.

Specifically, as shown in fig. 1 to 3 and 5, the U-shaped frame rotating member of the present utility model includes a copper sleeve 18 and a rotating block 20, one end of the rotating block 20 is disposed in the copper sleeve 18, the copper sleeve 18 is disposed in the first mounting hole, the other end of the rotating block 20 is provided with a mounting groove, a mounting arm surrounding the mounting groove is provided with a second mounting hole, the connecting portion of the U-shaped frame 21 is accommodated in the mounting groove, and in addition, the bottom end of the linear traction block 17 is provided with a U-shaped frame rotating block bottom screw 15 and a U-shaped frame rotating block bottom spacer 16 for fixing the U-shaped frame rotating block 20 in the first mounting hole of the linear traction block 17.

According to the utility model, the copper sleeve is arranged in the linear traction block for lubricating the U-shaped frame rotating block, and the U-shaped frame rotating block can rotate 360 degrees in the horizontal direction along the linear traction block hole axis based on the arrangement of the copper sleeve.

Further, as shown in fig. 1 to 3, fig. 6, the traction moving assembly further includes a U-shaped frame swing shaft 22, and a mounting groove and a second mounting hole are formed on the U-shaped frame rotating member; the connecting part of the U-shaped frame 21 is accommodated in the mounting groove, a third mounting hole is further formed in the connecting part in a penetrating manner, and the U-shaped frame swinging shaft 22 sequentially penetrates through the second mounting hole and the third mounting hole, namely, the U-shaped frame swinging shaft sequentially penetrates through the rotating block and the U-shaped frame and is locked and fixed through the U-shaped frame swinging shaft screw 23, so that the U-shaped frame swings laterally relative to the U-shaped frame rotating block, and is in an untwisted state as shown in A in fig. 6, and is in a swinging state to one side as shown in B in fig. 6.

By arranging the U-shaped frame swinging shaft, the foot of the patient does not generate extra torsion or repel the acting force of the patient, the foot injury and the uncomfortable feeling of the patient are reduced, and the effect of automatically adjusting the foot of the patient is achieved.

The device can meet the activity adjustment (horizontal sliding, horizontal rotation and lateral swinging) of three degrees of freedom, can meet the position placing requirement of the lower limbs of a patient, and greatly improves the usability of the device.

Still further, as shown in fig. 1 to 3 and 7, the apparatus of the present utility model further comprises two steel needle locking assemblies, wherein one end of the steel needle 25 is fixed between one of the steel needle locking assemblies and one of the supporting arms of the U-shaped frame 21, and the other end of the steel needle 25 is fixed between the other steel needle locking assembly and the other supporting arm of the U-shaped frame 21. That is, the steel needle locking component is connected with the supporting arms on two sides of the U-shaped frame so as to bridge the steel needle on the U-shaped frame.

Specifically, as shown in fig. 1 to 3 and 7, the steel needle locking assembly includes a locking block 24, a positioning member 26, a locking lever 27 and a locking member 28; the U-shaped frame 21 is provided with a plurality of adjusting holes 21a, the locking block 24 is attached to the U-shaped frame 21, and one side of the locking block 24 facing the U-shaped frame 21 is provided with a positioning hole, a locking hole and a containing groove; the steel needle 25 is clamped in the accommodating groove of the locking block 24; the two ends of the positioning piece 26 are respectively penetrated in the positioning hole and the adjusting hole so as to play a role in positioning the locking position; one end of the locking rod 27 is penetrated through the locking hole, the other end of the locking rod 27 is penetrated through the adjusting hole, and the other end penetrated out of the locking rod 27 is also connected with the locking piece 28 to lock the locking piece 24 on the U-shaped frame 21 so as to lock the steel needle.

According to the utility model, the plurality of adjusting holes are formed in the U-shaped frame, so that the fixed height of the steel needle can be adjusted, and different requirements are met.

The structure of the positioning member is not particularly limited, and the positioning member may be inserted into a corresponding hole to realize positioning, for example, a positioning column structure may be adopted, and of course, positioning members of other structures may also be adopted.

It should be further noted that the structure of the locking lever and the locking member is not limited in particular, so long as the locking lever and the locking member can be mutually matched to fix the locking member, for example, the locking lever may use a locking screw, the locking member may use a locking knob, and the locking member may also include a locking screw.

Illustratively, as shown in fig. 2 and 7, the steel needle locking block 24 is kept limited by a positioning member 26 (e.g., a positioning post) penetrating into the U-shaped frame 21 and a locking rod 27 (e.g., a screw), and the steel needle locking block 24 is driven to move towards the U-shaped frame 21 by clockwise rotation of a locking member 28 (e.g., a knob) on the other side of the U-shaped frame 21, so as to fix the steel needle 25.

Further, as shown in fig. 2 and 7, the present utility model can also remove the parts group (including the locking block 24, the steel needle 25, the positioning member 26, the locking rod 27, the locking member 28, and the locking screw 29) on the U-shaped frame 21 by rotating the steel needle locking block knob screw 29 and the steel needle locking member 28 (e.g., a knob) counterclockwise, and then selectively adjust the initial height of the parts group (24-29) through the hole site on the U-shaped frame 21, and then rotate the steel needle locking block knob screw 29 and the steel needle locking member 28 (e.g., a knob) clockwise, thereby fixing the parts group (24-29) to achieve the effect of adjusting the height of the steel needle 25 of the patient.

According to the utility model, the steel needle can be fixed by rotating the steel needle locking knob clockwise, the steel needle can be unlocked by rotating the steel needle locking block knob anticlockwise, and the steel needle can be conveniently installed and detached.

Further, as shown in fig. 2 and 7, in the embodiment of the present utility model, the locking block 24 is provided with a steel needle guide portion 24a, and the steel needle guide portion 24a is inclined from the end of the locking block 24 to one side of the U-shaped frame 21 to guide the steel needle 25 to fall into the accommodating groove of the locking block 24.

The steel needle locking block adopts a large chamfer design, so that a patient steel needle can accurately fall into a locking groove of the steel needle locking block. In addition, the utility model adopts the double-guide pillar design, can ensure that the rotation of the knob of the steel needle locking block can drive the steel needle locking block to move in one direction, can not cause inconvenient operation phenomena such as tilting of the steel needle locking block, and improves the convenience and reliability of the steel needle clamping of patients.

The steel needle locking device improves the convenience and reliability of the clamping connection of the steel needle of the patient.

Still further, as shown in fig. 1 to 3, the apparatus of the present utility model further comprises a leg pad 30, and the leg pad 30 is disposed at the front end of the base plate 1 and adjacent to the traction pan 2.

It should be noted that the fixing mode of the leg pad and the bottom plate is not particularly limited, for example, the leg pad and the bottom plate are bonded in a sticking mode, and the height is matched with the height of the steel needle of the patient into a whole, so that the blood reflux of the lower leg of the patient is met, and the patient can recover more quickly.

Further, as shown in fig. 1, 2 and 8, a rotatable strap pull ring 31 and a strap pull ring screw 32 are further provided on the side of the traction bottom shell 2 away from the leg pad 30, that is, the strap pull ring is fixed on the traction bottom shell 2 by the strap pull ring screw, and the medical staff can fix the device of the utility model on the sickbed by using the medical strap through the strap pull ring capable of rotating 360 degrees.

Further, as shown in fig. 1 to 3, a handle 11 is further provided at the top of the traction bottom shell 2, and the handle 11 is fixed on the traction bottom shell 2 by a handle screw 10, so as to facilitate the taking and placing of the traction bottom shell.

The utility model provides a calcaneus traction fixing device, which has the following beneficial effects:

the device adopts the built-in design of the traction component, has small design structure and stable performance, and is not easy to be interfered by external environment, misoperations and the like to hurt patients;

the traction force provided by the device is accurate in value, and the traction force can be controlled and adjusted so as to achieve the effects of constant and undamped tension of the lower leg of the patient;

thirdly, the traction force providing component is provided with the backstop block so as to ensure that the steel wire hook can freely move, thereby facilitating the hanging operation of medical staff;

fourth, the U-shaped frame of the utility model has high freedom of movement, is adaptive to the feet of patients, and improves the usability;

fifthly, the steel needle locking assembly improves the convenience and reliability of the clamping connection of the steel needles of patients;

sixthly, the leg pad is integrated with the traction bottom shell, so that the blood reflux of the lower leg of a patient is met, and the uncomfortable feeling of the patient is reduced;

seventh, the device of the utility model can prevent the foot of the patient from generating extra torsion force, does not repel the acting force of the patient, and reduces the foot injury and uncomfortable feeling of the patient;

eighth, the device of the utility model has small structure, stable performance and beautiful appearance, and is not easy to be interfered by external environment.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

Claims

1. A calcaneus traction fixation device comprising:

a traction bottom shell with a first cavity;

a traction movable assembly movably disposed in the first cavity;

a steel needle arranged on the traction movable component,

2. The calcaneus traction fixation device of claim 1 wherein the traction providing assembly comprises a plurality of constant force wrap springs, a plurality of constant force wrap spring shafts, a plurality of traction ropes, and a plurality of traction wheelsets having different traction forces; the traction bottom shell is provided with a first connecting hole for communicating the first cavity with the second cavity;

3. The calcaneus traction fixation device according to claim 2, wherein a retaining block is further accommodated in the first connecting hole, a second connecting hole is formed in the retaining block in a penetrating manner, the cross-sectional area of the second connecting hole is smaller than the size of the traction piece, and the traction rope is arranged in the second connecting hole in a penetrating manner.

4. The calcaneus traction fixation device of claim 2 wherein the traction movable assembly comprises a sliding rail, a slider, a linear traction block, a U-shaped frame; wherein,,

5. The calcaneus traction fixation device according to claim 4, wherein the traction movable assembly further comprises a U-shaped frame rotating member, the linear traction block is further provided with a first mounting hole in a penetrating manner, and the U-shaped frame comprises support arms positioned at two sides and a connecting part connected with the support arms;

one end of the U-shaped frame rotating piece is rotatably installed in the first installation hole, and the other end of the U-shaped frame rotating piece is connected with the connecting portion.

6. The calcaneus traction fixation device of claim 5 wherein the traction movement assembly further comprises a U-shaped frame swing shaft, the U-shaped frame swivel being provided with a mounting slot and a second mounting hole;

the connecting part is accommodated in the mounting groove, a third mounting hole is formed in the connecting part in a penetrating mode, and the U-shaped frame swinging shaft sequentially penetrates through the second mounting hole and the third mounting hole.

7. The calcaneus traction fixation device of claim 6 further comprising two steel needle locking assemblies, one end of the steel needle being secured between one of the steel needle locking assemblies and one of the support arms, the other end of the steel needle being secured between the other of the steel needle locking assemblies and the other of the support arms.

8. The calcaneus traction fixation device of claim 7 wherein the steel needle locking assembly comprises a locking block, a locating member, a locking lever, and a locking member; the supporting arm of the U-shaped frame is provided with a plurality of adjusting holes;

the steel needle is clamped in the accommodating groove of the locking block;

9. The calcaneus traction fixation device according to claim 8, wherein a steel needle guide part is provided on the locking block, and the steel needle guide part is inclined from the end of the locking block to one side of the U-shaped frame to guide the steel needle to fall into the accommodating groove of the locking block.

10. The calcaneus traction fixation device according to any one of claims 1 to 9 further comprising a leg pad disposed on the base plate and adjacent to the traction pan.