Calcaneal traction fixation device

Abstract

The present application provides a kind of calcaneus traction fixing device, belong to medical instrument technical field.The device of the present application includes: traction bottom shell, with first cavity;Bottom plate, set in the side of traction bottom shell away from the first cavity, bottom plate and traction bottom shell are formed second cavity by surrounding;Traction movable assembly, movably set in the first cavity;Steel needle, set in traction movable assembly, traction force providing component, set in the second cavity, to provide traction force to traction movable assembly.The device of the present application adopts built-in design of traction component, design structure is small and exquisite, stable performance, not easy to be disturbed by external environment and misoperation and other harm patient's condition occurs, solve the nursing staff operation inconvenient when patient lower limb rehabilitation or preoperative patient fixed maintenance, design structure is unstable, patient position is placed uncomfortable, preoperative patient lower limb cannot be fixed to exert traction force and produce pain and other problems.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a calcaneus traction fixing device. BACKGROUND

[0002] Calcaneus traction is a common technique in orthopedics, mainly applicable to calf fracture, tibial unstable fracture, tibial plateau fracture, ankle comminuted fracture and pilon fracture. This technique is of great significance for preoperative fracture reduction, reducing the difficulty of reduction during surgery, reducing the sequelae such as poor surgical fracture healing, malunion and poor surgical reduction, and preparing for the operation period. Although this traction technique has a wide application in orthopedics, the existing calcaneus traction device has the shortcomings of traditional structure, inconvenience, large space occupation and patient's lower leg discomfort due to the use of pulley weight design of the traction fixing instrument.

[0003] Therefore, in view of the above technical problems, the present application proposes a new calcaneus traction fixing device, which provides a small, light and stable structure design direction for the patient's lower limb operation rehabilitation and preoperative patient fixed calcaneus traction fixing device. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art, and provides a calcaneus traction fixing device.

[0005] The present application proposes a calcaneus traction fixing device, comprising:

[0006] A traction bottom shell having a first cavity;

[0007] A bottom plate arranged on the side of the traction bottom shell away from the first cavity, the bottom plate and the traction bottom shell surrounding to form a second cavity;

[0008] A traction movable assembly movably arranged in the first cavity;

[0009] A steel needle arranged on the traction movable assembly,

[0010] A traction force providing assembly arranged in the second cavity to provide traction force to the traction movable assembly.

[0011] Optionally, the traction force providing assembly comprises a plurality of constant force springs, a plurality of constant force spring shafts, a plurality of traction ropes and a plurality of traction wheel sets having different traction forces, and a first connecting hole is arranged on the traction bottom shell to communicate the first cavity and the second cavity;

[0012] The first end of the constant force spring is fixed to one end of the second cavity through the corresponding constant force spring shaft, and the second end is connected with the traction rope;

[0013] The first end of the traction rope is wound on the first end of the constant force spring, the second end of the traction rope is fixed to the other end of the second cavity through the corresponding traction wheel group, and the second end of the traction rope is pulled out from the first connecting hole in the first cavity. A traction member acting on the traction movable assembly is also provided on the second end of the traction rope.

[0014] Optionally, a retreat stopper is also accommodated in the first connecting hole, a second connecting hole is provided on the retreat stopper, the cross-sectional area of the second connecting hole is smaller than the size of the traction member, and the traction rope is provided in the second connecting hole.

[0015] Optionally, the traction movable assembly includes a sliding rail, a sliding block, a linear traction block, and a U-shaped bracket.

[0016] The sliding rail is arranged on the traction bottom shell, and the sliding block is slidably arranged on the sliding rail.

[0017] The linear traction block is connected with the sliding block, the U-shaped bracket is arranged on the linear traction block, and the steel needle is arranged on the U-shaped bracket.

[0018] A plurality of traction holes are provided on the linear traction block, and each traction member is arranged in the corresponding traction hole when traction is required.

[0019] Optionally, the traction movable assembly further includes a U-shaped bracket rotating member, and a first mounting hole is further provided on the linear traction block.

[0020] One end of the U-shaped bracket rotating member is rotatably mounted in the first mounting hole, and the other end of the U-shaped bracket rotating member is connected with the U-shaped bracket.

[0021] Optionally, the traction movable assembly further includes a U-shaped bracket swing shaft, and a mounting groove and a second mounting hole are arranged on the U-shaped bracket rotating member.

[0022] The end of the U-shaped bracket is accommodated in the mounting groove, the end of the U-shaped bracket is provided with a third mounting hole, and the U-shaped bracket swing shaft is sequentially provided in the second mounting hole and the third mounting hole.

[0023] Optionally, the device further includes two steel needle locking assemblies, one end of the steel needle is fixed between one of the steel needle locking assemblies and one side of the U-shaped bracket, 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 bracket.

[0024] Optionally, the steel needle locking assembly includes a locking block, a positioning member, a locking rod, and a locking member, and a plurality of adjusting holes are arranged on the support arm of the U-shaped bracket.

[0025] The locking block is attached to the support arm, and the locking block is provided with a positioning hole, a locking hole and a receiving groove on one side of the support arm;

[0026] The steel needle is clamped in the receiving groove of the locking block;

[0027] The two ends of the positioning member are respectively threaded through the positioning hole and the adjusting hole;

[0028] One end of the locking rod is threaded through the locking hole, the other end is threaded out of the adjusting hole, and the locking block is locked on the U-shaped frame by connecting with the locking member.

[0029] Optionally, a steel needle guide is provided on the locking block, which 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 receiving groove of the locking block.

[0030] Optionally, the device further comprises a leg pad, which is provided on the bottom plate and adjacent to the traction bottom shell.

[0031] The present application provides a calcaneus traction fixing device, comprising: a traction bottom shell having a first cavity; a bottom plate provided on the side of the traction bottom shell away from the first cavity, the bottom plate and the traction bottom shell surrounding to form a second cavity; a traction movable assembly movably provided in the first cavity; a steel needle provided on the traction movable assembly; a traction force providing assembly provided in the second cavity to provide traction force to the traction movable assembly. The device of the present application adopts the design of built-in traction component, which is small in design structure and stable in performance, and is not easy to be disturbed by external environment and misoperation, so as to avoid the harm to the patient. The device solves the problems of inconvenient operation of nursing staff during lower limb rehabilitation of the patient or preoperative fixation and maintenance of the patient, unstable design structure, uncomfortable body position of the patient, and pain caused by inability to fix the lower limbs of the patient to apply traction force before operation. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a whole structure schematic view of the calcaneus traction fixing device of an embodiment of the present application;

[0033] Figure 2 It is an exploded view of the calcaneus traction fixing device of another embodiment of the present application;

[0034] Figure 3 It is a structure schematic view of the traction force providing assembly of another embodiment of the present application;

[0035] Figure 4 It is a horizontal sliding schematic view of the calcaneus traction fixing device of another embodiment of the present application;

[0036] Figure 5A rotating schematic view of the calcaneus traction fixation device according to another embodiment of the present application;

[0037] Figure 6 A lateral swinging schematic view of the calcaneus traction fixation device according to another embodiment of the present application;

[0038] Figure 7 A steel needle clamping schematic view according to another embodiment of the present application;

[0039] Figure 8 An application schematic view of the calcaneus traction fixation device according to another embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Unless otherwise specifically stated, the technical terms or scientific terms used in the present application shall be understood as the usual meanings by those skilled in the art. The "including" or "containing" and the like used in the present application neither limit the mentioned shapes, numbers, steps, actions, operations, components, elements and / or their groups, nor exclude the presence or addition of one or more other different shapes, numbers, steps, actions, operations, components, elements and / or their groups. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number and order of the indicated technical features.

[0042] In some descriptions of the application, unless otherwise specifically stated and limited, the terms "mounting", "connecting", "connected", or "fixed" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect through intermediate media, can be internal communication of two elements or interaction relationship between two elements. In addition, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to represent the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] As Figures 1 to 3As shown, the present application provides a calcaneus traction fixing device, comprising a bottom plate 1, a traction bottom shell 2, a traction movable assembly, a steel needle 25 and a traction force providing assembly; wherein the traction bottom shell 2 has a first cavity, the bottom plate 1 is arranged on the side of the traction bottom shell 2 away from the first cavity, that is, the bottom plate 1 is arranged below the traction bottom shell 2, and the bottom plate 1 and the traction bottom shell 2 form a second cavity; the traction movable assembly is movably arranged in the first cavity; the steel needle 25 is arranged on the traction movable assembly, and the traction force providing assembly is arranged in the second cavity to provide traction force to the traction movable assembly. That is, when the patient's calcaneus needs to be tractioned, the patient's calcaneus is fixed on the steel needle, the steel needle is fixed on the traction movable assembly, and the traction force providing assembly is used to traction the traction movable assembly.

[0044] The present application adopts an internal design, the traction force providing assembly is internally arranged in the traction bottom shell, the traction movable assembly and the steel needle are arranged above the traction bottom shell, the overall structure of the device is small and stable in performance, the constant tension of the patient's lower leg can be realized, and the patient is not easily damaged by external environment interference and misoperation.

[0045] Specifically, as shown in the drawings, Figures 1 to 3 The traction force providing assembly comprises a plurality of constant force springs 3 with different traction forces, a plurality of constant force spring shafts 4, a plurality of sliding square tubes 5, a plurality of traction ropes 9 and a plurality of traction wheel sets; wherein the first end of the constant force spring 3 is fixed to one end of the second cavity through the constant force spring shaft 4, and the second end of the constant force spring 3 is connected with the traction rope 9. In addition, the traction bottom shell 2 is provided with a first connecting hole communicating the first cavity and the second cavity; the first end of the traction rope 9 is wound on the first end of the constant force spring 3, the second end of the traction rope 9 is fixed to the other end of the second cavity through the corresponding traction wheel set, and the second end of the traction rope 9 is arranged in the first cavity from the first connecting hole, and the second end of the traction rope 9 is further provided with a traction piece acting on the traction movable assembly. That is, the traction rope realizes the traction of the traction movable assembly by being wound on the constant force spring.

[0046] It should be noted that the number of constant force springs and the size of traction force are not specifically limited, and can be specifically set according to actual needs, for example, four constant force springs with different traction forces are arranged respectively, and of course, other number of constant force springs can also be arranged.

[0047] It should be further noted that the structure and number of the traction wheel set are also not specifically limited, and can only include one or two traction wheel sets, wherein, as shown in the drawings, Figure 2 and Figure 3 The traction wheel set comprises a pulley 6 and a pulley shaft 7 arranged in the pulley 6.

[0048] It should be noted that the present application is also not specifically limited to the traction rope and the traction member, for example, the traction rope can be a steel wire rope, and the traction member can be a hook, and of course the above two can be an integral, i.e., a steel wire hook.

[0049] The traction member of the present application can adopt a hook structure and can freely move, which is convenient for medical staff to perform hooking operation.

[0050] Exemplarily, as shown in Figure 2 and Figure 3 , four constant force springs 3 providing 1 kg, 2 kg, 4 kg and 5 kg of constant force respectively are arranged at the front end inside the traction bottom shell 2, the constant force springs 3 are sequentially penetrated by the constant force spring shaft 4 and fixed to the traction bottom shell 2, and the pulling end of the constant force spring 3 is connected with the tail end of the traction rope 9 in the sliding square tube 5. There are two groups of pulley blocks at the rear end inside the traction bottom shell 2, each group of pulley blocks has four pulleys 6 fixed to the traction bottom shell 2 by the pulley shaft 7, and the traction rope 9 is arranged in the groove of the pulley 6.

[0051] It should be noted that since the traction force is exposed in the first cavity, different traction forces can be marked on each traction member (hook), which is convenient for use.

[0052] Further, as shown in Figure 2 and Figure 3 , the connecting hole is arranged with a traction rope stopper 8, the traction rope stopper 8 is penetrated by a second connecting hole, the cross section of the second connecting hole is smaller than the size of the traction member, and the traction rope 9 is penetrated in the second connecting hole. That is, the traction rope stopper 8 is arranged at the head end side of the traction member 9, when the traction member (for example, the hook) is in an unused state, it is arranged in the hole position groove of the traction bottom shell 2, clamps the traction rope 9 close to one end of the traction member, prevents the traction rope head end from being clamped into the hole position groove of the traction bottom shell 2 by the pulling force of the constant force spring 3, and can ensure that the traction member can freely move, which is convenient for medical staff to perform hooking operation.

[0053] Based on the traction force providing assembly provided by the present application, the traction force can be controlled and adjusted by the combination design of multiple different constant force springs, so as to meet the needs of different traction forces, in addition, the provided pulling force value is accurate, and the constant and damping-free effect of the pulling force of the lower leg of the patient can be realized.

[0054] Further, as shown in Figures 1 to 4 , the traction moving assembly includes a sliding rail 12, a sliding block 14, a straight line traction block 17 and a U-shaped frame 21; the sliding rail 12 is connected with the traction bottom shell 2 through a sliding rail screw 13, the sliding block 14 is slidably arranged on the sliding rail 12; the straight line traction block 17 is connected with the sliding block 14 through a straight line traction block screw 19, the U-shaped frame 21 is arranged on the straight line traction block 17, and a steel needle 25 is arranged on the U-shaped frame 21, so as to realize the horizontal sliding of the traction moving assembly on the sliding rail 12.

[0055] Further, as shown in Figures 1 to 4 , the straight line traction block 17 is provided with a plurality of traction holes 17a, and the traction members are placed in the traction holes 17a when traction is needed. That is, when four traction members are provided, four traction holes are provided on the straight line traction block 17, and each traction member is placed in each traction hole 17a when traction is needed.

[0056] Exemplarily, with continued reference to Figures 1 to 4 , based on the four constant force coil springs 3 of 1kg, 2kg, 4kg, and 5kg provided in the foregoing embodiments, the steel wire hooks marked with 1kg, 2kg, 4kg, and 5kg can be hung in the traction holes 17a of the straight line traction block 17 respectively / combined / simultaneously, so as to realize the application of the constant traction force of 1kg along the patient's foot, which is the 1kg-15kg graduation of the steel needle 25 driving the patient's calcaneus, i.e. the traction movable assembly slides to the right end of the traction bottom shell in the horizontal direction, as shown in B of Figure 4 . By taking out the steel wire hooks marked with 1kg, 2kg, 4kg, and 5kg from the traction holes 17a of the straight line traction block 17 respectively / combined / simultaneously, the constant traction force of 1kg along the patient's foot, which is the 1kg-15kg graduation of the steel needle 25 driving the patient's calcaneus, is reduced, i.e. the traction movable assembly slides to the left end of the traction bottom shell in the horizontal direction, as shown in A of Figure 4 .

[0057] It should be understood that the U-shaped frame generally includes a connecting portion at the lower end and support arms connected to the connecting portion and located on both sides.

[0058] Further, as shown in Figures 1 to 3 , Figure 5 , the traction movable assembly further includes a U-shaped frame rotating member; and a first mounting hole is provided on the straight line traction block 17; one end of the U-shaped frame rotating member is rotatably installed in the first mounting hole, and the other end of the U-shaped frame rotating member is connected to the connecting portion of the U-shaped frame 21, so that the U-shaped frame can be rotated in the horizontal direction, as shown in A of Figure 5 , which is the unrotated state, and as shown in B of Figure 5 , which is the rotated state in the horizontal direction.

[0059] Specifically, as shown in Figures 1 to 3 , Figure 5As shown, the U-shaped frame rotating piece of the present application comprises a copper sleeve 18 and a rotating block 20, one end of the rotating block 20 is arranged in the copper sleeve 18, the copper sleeve 18 is arranged in the first mounting hole, the other end of the rotating block 20 is provided with a mounting groove, a second mounting hole is arranged on the mounting arm surrounding the mounting groove, the connecting part of the U-shaped frame 21 is accommodated in the mounting groove, in addition, the U-shaped frame rotating block bottom screw 15 and the U-shaped frame rotating block bottom gasket 16 are arranged at the bottom end of the linear traction block 17 to fix the U-shaped frame rotating block 20 in the first mounting hole of the linear traction block 17.

[0060] The present application has a copper sleeve inside the linear traction block to lubricate the U-shaped frame rotating block, based on the arrangement of the copper sleeve, the U-shaped frame rotating block can be rotated 360° in the horizontal direction along the hole shaft of the linear traction block.

[0061] Further, as shown in Figures 1 to 3 , Figure 6 , the traction movable assembly further comprises a U-shaped frame swing shaft 22, the U-shaped frame rotating piece is provided with a mounting groove and a second mounting hole; the connecting part of the U-shaped frame 21 is accommodated in the mounting groove, and a third mounting hole is further arranged on the connecting part, the U-shaped frame swing shaft 22 is sequentially arranged in the second mounting hole and the third mounting hole, that is, the U-shaped frame swing shaft sequentially passes through the rotating block and the U-shaped frame, and is locked and fixed by the U-shaped frame swing shaft screw 23, so that the U-shaped frame swings laterally relative to the U-shaped frame rotating block, as shown in A of Figure 6 , it is in the non-swinging state, as shown in B of Figure 6 , it is in the swinging state to one side.

[0062] The present application can make the patient's foot not produce additional torsion, not reject the patient's force, reduce the patient's foot trauma and body discomfort, and achieve automatic adjustment of the patient's foot.

[0063] The device of the present application can meet the three-degree-of-freedom movable adjustment (horizontal sliding, horizontal rotation, lateral swinging), can meet the body position placing demand of the lower limbs of the patient, and greatly improves the usability of the device.

[0064] Further, as shown in Figures 1 to 3 , Figure 7 , the device of the present application further comprises two steel needle locking assemblies, 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 is connected by the steel needle locking assembly and the supporting arms on both sides of the U-shaped frame to cross the U-shaped frame.

[0065] Specifically, as shown in Figures 1 to 3 , Figure 7As shown, the steel needle locking assembly includes a locking block 24, a positioning member 26, a locking rod 27 and a locking member 28; and a plurality of adjusting holes 21a are arranged on the U-shaped frame 21, the locking block 24 is attached to the U-shaped frame 21, and the side of the locking block 24 facing the U-shaped frame 21 is provided with a positioning hole, a locking hole and a receiving groove; the steel needle 25 is clamped in the receiving groove of the locking block 24; the two ends of the positioning member 26 are respectively arranged in the positioning hole and the adjusting hole to play a positioning role on the locking position; one end of the locking rod 27 is arranged in the locking hole, and the other end is arranged out of the adjusting hole, and the other end of the locking rod 27 is further connected with the locking member 28 to lock the locking block 24 on the U-shaped frame 21, so as to realize the locking of the steel needle.

[0066] The present application can realize the adjustment of the fixed height of the steel needle by arranging a plurality of adjusting holes on the U-shaped frame, and meets different needs.

[0067] It should be noted that the structure of the positioning member is not specifically limited, as long as it can be inserted into the corresponding hole position to realize positioning, for example, a positioning column structure can be used, and of course, other structures of the positioning member can also be used.

[0068] It should be further noted that the structure of the locking rod and the locking member is also not specifically limited, as long as they can cooperate with each other to realize the fixation of the locking block, for example, the locking rod can be a locking screw, the locking member can be a locking knob, and of course, it can also include a locking screw.

[0069] Exemplarily, as shown in Figure 2 , Figure 7 The steel needle locking block 24 is limited by the positioning member 26 (for example, a positioning column) and the locking rod 27 (for example, a screw rod) penetrating into the U-shaped frame 21, and the steel needle locking block 24 is moved towards the U-shaped frame 21 by rotating the locking member 28 (for example, a knob) on the other side of the U-shaped frame 21 clockwise, so as to achieve the fixation of the steel needle 25.

[0070] Further, as shown in Figure 2 , Figure 7 The present application can also remove the part group (including the locking block 24, the steel needle 25, the positioning member 26, the locking rod 27, the locking member 28, 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 (for example, a knob) counterclockwise, then the initial height of the above part group (24-29) can be adjusted by selecting the hole position on the U-shaped frame 21, and the steel needle locking block knob screw 29 and the steel needle locking member 28 (for example, a knob) are rotated clockwise to fix the above part group (24-29), so as to achieve the effect of adjusting the height of the steel needle 25 of the patient.

[0071] The steel needle locking knob is rotated clockwise to fix the steel needle, and the steel needle locking block knob is rotated counterclockwise to unlock the steel needle, so that the steel needle is convenient to install and disassemble.

[0072] Further, as shown in Figure 2 and Figure 7 , in the embodiment of the application, the locking block 24 is provided with a steel needle guide part 24a which 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.

[0073] The steel needle locking block of the application adopts a large chamfer design, which can make the patient's steel needle accurately fall into the locking groove of the steel needle locking block. In addition, the application adopts a double guide column design, which can ensure that the rotation of the steel needle locking block knob can drive the steel needle locking block to move in one direction, and the operation inconvenience phenomenon such as tilting of the steel needle locking block does not occur, and the convenience and reliability of the patient's steel needle clamping are improved.

[0074] The application improves the convenience and reliability of the patient's steel needle clamping through the steel needle locking device.

[0075] Further, as shown in Figures 1 to 3 , the device of the application further comprises a leg pad 30 which is arranged at the front end of the bottom plate 1 and is arranged adjacent to the traction bottom shell 2.

[0076] It should be noted that the fixing method of the leg pad and the bottom plate is not specifically limited, for example, the leg pad and the bottom plate are bonded by using a hook and loop fastener, and the height is adapted to the height of the patient's steel needle to become an integral whole, so as to meet the blood return of the patient's lower leg, so that the patient can recover faster.

[0077] Further, as shown in Figure 1 and Figure 2 , Figure 8 , a rotatable bandage pull ring 31 and a bandage pull ring screw 32 are further arranged on the side of the traction bottom shell 2 away from the leg pad 30, that is, the bandage pull ring is fixed on the traction bottom shell 2 by the bandage pull ring screw, and medical staff can fix the device of the application on the hospital bed by using the medical bandage through the 360-degree rotatable bandage pull ring.

[0078] Further, as shown in Figures 1 to 3 , a handle 11 is further arranged on 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.

[0079] The application provides a calcaneus traction fixing device, which has the following beneficial effects:

[0080] First, the device of the present application adopts built-in design of traction component, and has small structure, stable performance, and is not easy to be interfered by external environment and misoperation, so as to avoid the harm to the patient;

[0081] Second, the device of the present application provides accurate traction force value, and the traction force is controllable and adjustable, so as to realize constant traction force and no damping effect of the lower leg of the patient;

[0082] Third, the traction force providing assembly of the present application is provided with a retreat block, so that the steel wire hook can be freely moved, and the medical staff can conveniently perform the hanging operation;

[0083] Fourth, the U-shaped frame of the present application has high freedom, and is self-adaptive to the feet of the patient, so as to improve the usability;

[0084] Fifth, the steel needle locking assembly of the present application improves the convenience and reliability of the steel needle clamping of the patient;

[0085] Sixth, the leg pad of the present application is integrated with the traction bottom shell, so as to meet the blood return of the lower leg of the patient, and reduce the discomfort of the patient;

[0086] Seventh, the device of the present application can not produce additional torsion on the feet of the patient, and does not reject the action force of the patient, so as to reduce the trauma and discomfort of the feet of the patient;

[0087] Eighth, the device of the present application has small structure, stable performance, and beautiful appearance, and is not easy to be interfered by external environment.

[0088] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also regarded as the protection scope of the present application.

Claims

1. A calcaneal traction fixation device, characterized by, The device comprises: a traction bottom shell having a first cavity; a bottom plate arranged on a side of the traction bottom shell away from the first cavity, the bottom plate and the traction bottom shell forming a second cavity; a traction movable assembly movably arranged in the first cavity; a steel needle arranged on the traction movable assembly, a traction force providing assembly arranged in the second cavity to provide traction force to the traction movable assembly; wherein the traction force providing assembly comprises a plurality of constant force springs with different traction forces, a plurality of constant force spring shafts, a plurality of traction ropes, and a plurality of traction wheel sets, and a first connecting hole is arranged on the traction bottom shell to communicate the first cavity and the second cavity; a first end of the constant force spring is fixed to one end of the second cavity through the corresponding constant force spring shaft, and a second end is connected with the traction rope; a first end of the traction rope is wound on the first end of the constant force spring, a second end of the traction rope is fixed to the other end of the second cavity through the corresponding traction wheel set, and the second end of the traction rope is arranged in 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; the traction movable assembly comprises a sliding rail, a sliding block, a straight-line 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 straight-line traction block is connected with the sliding block, the U-shaped frame is arranged on the straight-line traction block, and the steel needle is arranged on the U-shaped frame; a plurality of traction holes are arranged on the straight-line traction block, and each traction piece is arranged in the corresponding traction hole when traction is needed; a retreat-stop block is further arranged in the first connecting hole, a second connecting hole is arranged on the retreat-stop block, a cross-sectional area of the second connecting hole is smaller than a size of the traction piece, and the traction rope is arranged in the second connecting hole.

2. The calcaneal traction fixation device of claim 1, wherein, the traction movable assembly further comprises a U-shaped frame rotating piece, a first mounting hole is further arranged on the straight-line traction block, the U-shaped frame comprises support arms on both sides and a connecting part connected with the support arms; one end of the U-shaped frame rotating piece is rotatably mounted in the first mounting hole, and the other end of the U-shaped frame rotating piece is connected with the connecting part.

3. The calcaneal traction fixation device of claim 2, wherein, the traction movable assembly further comprises a U-shaped frame swing shaft, a mounting groove and a second mounting hole are arranged on the U-shaped frame rotating piece; the connecting part is arranged in the mounting groove, a third mounting hole is arranged on the connecting part, and the U-shaped frame swing shaft is arranged in the second mounting hole and the third mounting hole in sequence.

4. The calcaneal traction fixation device of claim 3, wherein, the device further comprises two steel needle locking assemblies, one end of the steel needle is fixed between one of the steel needle locking assemblies and one of the support arms, and the other end of the steel needle is fixed between the other steel needle locking assembly and the other support arm.

5. The calcaneal traction fixation device of claim 4, wherein, the steel needle locking assembly comprises a locking block, a positioning piece, a locking rod, and a locking piece, and a plurality of adjusting holes are arranged on the support arm of the U-shaped frame; the locking block is arranged on the support arm, and a positioning hole, a locking hole, and a containing groove are arranged on a side of the locking block facing the support arm. The steel needle is clamped in the accommodating groove of the locking block; Two ends of the positioning member are respectively arranged in the positioning hole and the adjusting hole; One end of the locking rod is arranged in the locking hole, and the other end is arranged out of the adjusting hole and connected with the locking member to lock the locking block on the U-shaped frame.

6. The calcaneal traction fixation device of claim 5, wherein, A steel needle guide is arranged on the locking block, which 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.

7. The calcaneal traction fixation device according to any one of claims 1 to 6, wherein The device further comprises leg pads arranged on the bottom plate and adjacent to the traction bottom shell.

Images