CN212547129U

CN212547129U - Dynamic-static combined three-dimensional adjustable external fixator for fracture reduction

Info

Publication number: CN212547129U
Application number: CN202020380479.7U
Authority: CN
Inventors: 左中男
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-02-19
Anticipated expiration: 2030-03-23

Abstract

A dynamic-static combined three-dimensional adjustable external fixator for fracture reduction is characterized in that a first adjusting screw and a second adjusting screw are rotated according to fracture dislocation, so that a second adjusting frame translates and rotates relative to a main body adjusting rod, a needle fixing block arranged on the second adjusting frame clamps a bone fixing needle to drive a dislocated backbone to translate and swing up and down, the purpose of fine reduction through thread adjustment is achieved, longitudinal pressure is generated at a fracture end by adjusting the main body adjusting rod, and relative micromotion of the fracture end and lateral relative micromotion in different directions are generated by adjusting the first adjusting screw and the second adjusting screw, so that the fracture end is promoted to be healed; after resetting successfully, erection joint post and pole fixed block are installed to the dead lever on the fixed block, increase the stability of the fixed needle of fracture on the needle fixed block, guarantee the effectual fixed of fracture end position after resetting, as the basis of function activity, guaranteed the fixed stability of fracture end and the feasibility of postoperative function exercise, reach the treatment purpose of sound combination.

Description

Dynamic-static combined three-dimensional adjustable external fixator for fracture reduction

Technical Field

The utility model relates to an orthopedic surgery and plastic surgery surgical instrument, in particular to a dynamic and static combined three-dimensional adjustable external fixator for fracture reduction.

Background

In recent years, the therapeutic principles of bone fractures have changed greatly, from the mechanical Anchoring (AO) system to the Biological anchoring (BO) system. One of the principles of biological immobilization (BO) is to pursue elastic immobilization, using internal anchors with low elastic modulus, to avoid stress shielding under strong immobilization and complications caused by using too many anchors. Allowing micromotion under elastic fixation of the fracture, inducing callus formation during functional activity.

At present, the mainstream fracture external fixator in the market, such as the single-arm orthopedic external fixator of ortho fix, can be elongated and shortened through threads to correct the separation or the overlapping of fracture axes, but the external fixing bracket of ortho fix belongs to inelastic fixation, does not conform to the biological fixing principle, does not have the function of three-dimensional space thread adjustment and reduction, after the fracture external fixator is used for fixation, poor fracture alignment and the possibility of delayed union and nonunion of the fracture are often caused, so the existing single-arm orthopedic external fixator is mainly used for temporary external fixation of the fracture, the orthopedic external fixator needs to be dismantled in a second stage, fracture incision reduction is adopted, the fracture is treated by steel plate or intramedullary needle internal fixation, and when the fracture has axial angulation and is displaced before, after or left and right, the adjustment and reduction difficulty of the fracture is larger due to the lack of the function of three-dimensional space thread adjustment and reduction; patent numbers: the external fracture fixator disclosed in CN201820534150.4 can be adjusted by three-dimensional space threads, helps patients to perform early exercise, and can perform early joint function exercise after the operation of the patients, muscle contraction can generate discontinuous physiological stress, so that fracture healing is accelerated, but the instability of fracture fixation exists in the early exercise after the operation, and meanwhile, if stainless steel materials are used as a main body adjusting rod to ensure fixation and stabilization, the external fracture fixator lacks elastic fixation performance and does not accord with biological fixation principles, namely, the external fracture fixator cannot simultaneously meet the fracture elastic fixation condition and the stability of fracture fixation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a dynamic-static combined three-dimensional adjustable fracture reduction external fixator which conforms to the biological fixation principle of fracture, can quantitatively adjust the elastic fixation, and can adjust and reduce the three-dimensional space screw thread of the fracture end and is convenient to assemble and disassemble.

The utility model is realized by the following technical measures, a dynamic-static combined three-dimensional adjustable external fixator for fracture reduction, which comprises a main body adjusting rod capable of adjusting the length, wherein two ends of the main body adjusting rod are respectively provided with a first hinge column, the first hinge column is hinged at the middle part of a first adjusting frame, the end part of the first hinge column is rotationally provided with a first adjusting screw rod, the top thread part of the first adjusting screw rod is in threaded connection with one end of the first adjusting frame, the first adjusting screw rod is rotated to enable the first adjusting frame to translate, the first adjusting frame is provided with a second hinge column vertical to the translation direction, the second hinge column is hinged at the middle part of a second adjusting frame, the first adjusting frame is rotationally provided with a second adjusting screw rod, the top thread part of the second adjusting screw rod is in threaded connection with one end of the second adjusting frame, rotating the second adjusting screw to enable the second adjusting frame to swing up and down, wherein the second adjusting frame is detachably connected with a needle fixing block; the needle fixing block is provided with a detachable connecting column, the connecting column is provided with a rod fixing block, and the rod fixing block is connected with a fixing rod.

As a preferred mode, the main body adjusting rod comprises a moving rod and a sleeve which is sleeved at one end of the moving rod in a sliding mode, a third adjusting screw rod penetrates through the sleeve, and the top end thread part of the third adjusting screw rod is in threaded connection and penetrates into the moving rod in the axial direction.

As a preferable mode, the main body adjusting rod comprises a main rod body and a moving rod which is slidably sleeved at one end of the main rod body, and the moving rod is provided with a first strip-shaped groove; the screw penetrates through the first strip-shaped groove and is connected with the first adjusting frame.

As a preferable mode, the mobile terminal further comprises a second strip-shaped groove, and the screw penetrates through the second strip-shaped groove to be connected with one end, penetrating through the main rod body, of the main rod body in the movable rod; the two-way adjusting screw rod is arranged on the main rod body, and the two ends of the two-way adjusting screw rod are detachably connected with the moving rod.

As a preferred mode, the needle fixing device further comprises a connecting seat, the needle fixing block is arranged on the connecting seat, the connecting seat is arranged on the second adjusting frame, the connecting seat is provided with a fixing through hole, the connecting column penetrates through the fixing through hole, and one side of the connecting seat is provided with a threaded hole.

As a preferred mode, a groove is formed in the second adjusting frame, and a matched convex block is arranged at the bottom of the connecting seat corresponding to the groove.

As a preferred mode, the connecting column is arranged on the needle fixing block, and a preset angle is formed between the connecting column and the surface of the needle fixing block.

Preferably, a needle sleeve is rotatably arranged in the rotating through hole, and a fracture fixing needle is fixed in the needle sleeve.

As a preferable mode, the connecting seat is in a shape of T or a straight line.

Preferably, the body adjustment lever includes an extension connecting portion for connecting two or more body adjustment levers.

The external fixator of the utility model is suitable for fracture reduction of each joint, backbone and clavicle of a human body, when in use, the fracture position is simply reduced firstly, then at least three fracture fixing needles are inserted at two ends of a fracture line under X-ray perspective, then the fracture fixing needles are fixed by utilizing the needle fixing blocks, according to the dislocation of fracture, the first adjusting screw and the second adjusting screw are rotated to lead the second adjusting frame to translate and rotate relative to the main body adjusting rod, the needle fixing blocks arranged on the second adjusting frame clamp the bone fixing needles to drive the dislocated backbone translation and up-and-down swing, the accurate front-back direction and left-right direction dislocation reduction of fracture is realized, meanwhile, the length of the main body adjusting rod can also be adjusted to lead the fracture end to generate longitudinal pressure, and then the first adjusting screw and the second adjusting screw are adjusted to generate relative fine motion of the fracture end and relative fine motion of the lateral sides in different directions, promoting the healing of fracture ends; after the external fixator is subjected to three-dimensional adjustment, a connecting column and a rod fixing block are installed, the fixing rod is installed on the fixing block, the fixing rod can increase the stability of a fracture fixing needle on the needle fixing block, and the position of a reduced fracture end is effectively fixed to serve as the basis of functional activity, the fracture external fixator uses a carbon fiber material with low elastic modulus as a frame body, and performs three-dimensional space thread adjustment on the fracture end, so that constant lateral pressure stress can be generated at the fracture end, the fracture end generates micro lateral relative motion, and the purpose of dynamic and static combination is achieved; when a patient exercises the joint function in the early stage after operation, only the fixing rod needs to be detached, so that the fixing rod is convenient to detach, simple to operate, convenient to nurse and small in damage to bones and surrounding tissues; the fracture fixator ensures the stability of fracture fixation and the feasibility of postoperative functional exercise through the installation of the fixing rod, achieves the purpose of dynamic and static combination treatment, and simultaneously avoids the pain of taking out a steel plate or an intramedullary needle after the fracture is treated by mechanical fixation through incision in a second-stage operation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of three embodiments of the present invention;

fig. 4 is a partial schematic structural diagram of an embodiment of the present invention;

fig. 5 is a schematic structural view of a needle fixing block according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a needle fixing block according to an embodiment of the present invention.

Number and name in the figure: 1. a main body adjusting rod 101, a moving rod 102, a sleeve 103, a main rod body 104, a third adjusting screw 105, a second strip-shaped groove 106, a bidirectional adjusting screw 107, an adjusting hole 108, a screw 109, a first strip-shaped groove 2, a first hinge column 3, a first adjusting frame 4, a first adjusting screw 5, a second hinge column 6, a second adjusting frame 7, a second adjusting screw 8, a needle fixing block 81, a connecting seat 82, a fixing through hole 83, a threaded hole 84, a rotating through hole 85, a needle sleeve 86, an upper fixing block 87, a lower fixing block 88, a stud 89, a semi-cylindrical groove 9, a fracture fixing needle 10, a connecting column 11, a rod fixing block 111, a clamping connecting block 12, a fixing rod 13, a strip-shaped hole 14, a convex block 13, an

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example one

A dynamic-static combined three-dimensional adjustable external fixator for fracture reduction is disclosed, referring to figures 1-6, comprising a main body adjusting rod 1 capable of adjusting length, two ends of the main body adjusting rod 1 are respectively provided with a first hinged column 2, the first hinged column 2 is hinged at the middle part of a first adjusting frame 3, the end part of the first hinged column 2 is rotatably provided with a first adjusting screw 4, the top thread part of the first adjusting screw 4 is in threaded connection with one end of the first adjusting frame 3, the first adjusting screw 4 is rotated to enable the first adjusting frame 3 to move horizontally, the first adjusting frame 3 is provided with a second hinged column 5 vertical to the moving direction, the second hinged column 5 is hinged at the middle part of a second adjusting frame 6, the first adjusting frame 3 is rotatably provided with a second adjusting screw 7, the top thread part of the second adjusting screw 7 is in threaded connection with one end of the second adjusting frame 6, the second adjusting screw 7 is rotated to enable the second adjusting frame 6 to swing up and down, a needle fixing block 8 is arranged on the second adjusting frame 6, and a fracture fixing needle 9 is clamped on the needle fixing block 8; the needle fixing block 8 is provided with a connecting column 10, the connecting column 10 is provided with a rod fixing block 11, and the rod fixing block 11 is connected with a fixing rod 12.

The utility model discloses an external fixer for fracture is applicable to each joint of human body, the fracture of diaphysis and clavicle resets, when using, earlier simply reset the fracture dislocation, then under the X-ray perspective, insert three piece at least fracture fixation needle 9 at the both ends of fracture line, then utilize the fixed fracture fixation needle 9 of needle fixed block 8, rotatory first adjusting screw 4 and second adjusting screw 7 according to the position of fracture, make second alignment jig 6 carry out translation and rotation for main part regulation pole 1, needle fixed block 8 of locating on second alignment jig 6 drives fracture fixation needle 9 translation and luffing motion, carry out three-dimensional space adjustment to the diaphysis of fracture, through the distance of each junction of screw thread adjustment, realize the meticulous restoration of three-dimensional space screw thread adjustment of fracture end, also can be through adjusting the length of main part regulation pole 1 simultaneously, make the fracture end produce longitudinal pressure, rethread secondary adjustment first adjusting screw 4, The second adjusting screw 7 generates axial micro-motion and lateral micro-motion of the fracture end to promote the fracture end to heal; after the fracture end is adjusted and reset, a connecting column 10 and a rod fixing block 11 are installed, a fixing rod 12 is installed on the rod fixing block 11 and locked, the fixing rod 12 can increase the stability of a fracture fixing needle 9 on a needle fixing block 8, the phenomenon that the micro-motion generated by a main body adjusting rod 1 made of carbon fiber materials influences the stability of fracture fixation is avoided, the effective fixation of the reset fracture end position is ensured, and the fracture end position is used as a basis of functional activity; when a patient exercises the joint function in the early postoperative period, the patient only needs to remove the fixing rod 12, the doctor helps to do the joint function exercise in the early downlink period, and after the exercise is finished, the removed fixing rod 12 is installed back to keep the stability of the fracture end at other time; the disassembly is convenient, the operation is simple, the nursing is convenient, and the damage to bones and surrounding tissues is small; the fracture fixator ensures the stability of fracture fixation and the feasibility of postoperative functional exercise through the installation of the fixing rod 12, and achieves the purpose of dynamic and static combined treatment.

In this embodiment, referring to fig. 1, the main body adjusting lever 1 includes a main lever body 103 and a moving lever 101 slidably sleeved on one end of the main lever body 103, and the moving lever 101 is provided with a second bar-shaped groove 105 and a first bar-shaped groove 109; the screw 108 penetrates through the second strip-shaped groove 109 to be connected with a first adjusting frame 3, the first adjusting frame 3 slides along the first strip-shaped groove 109 according to the fracture position, and the screw 108 is locked and fixed after the length is roughly changed; still include two-way adjusting screw 106, two ends of two-way adjusting screw 106 can dismantle with mobile jib body 103 and carriage release lever 101 respectively and be connected, a screw 108 passes second bar groove 105 and is connected with the one end that mobile jib body 103 wore to locate in the carriage release lever 101, use this screw 108 of locking after the two-way adjusting screw 106 fine tuning, two-way adjusting screw 106 can more meticulous regulation main part adjust the length of pole 1, in order to realize the purpose of the fixed quantization adjustment of elasticity, after the adjustment, can dismantle it, simplify the outer fixer structure and the weight after fixing, prevent patient's maloperation, wherein, this two-way adjusting screw 106 is provided with radial regulation hole 107 in center department, insert an adjusting rod and rotate and adjust, in other embodiments, the surface of two-way adjusting screwed pipe also can set up the convenient rotation of annular knurl.

In the present embodiment, referring to fig. 1, the rod fixing block 11 includes four clamping connection blocks 111, the four clamping connection blocks 111 are overlapped with each other and locked by screws 108, and the four clamping connection blocks are respectively paired for clamping and fixing the connection column 10 and the fixing rod 12.

In the present embodiment, referring to fig. 1 to 4, the first adjusting screw 4 and the second adjusting screw 7 are respectively provided with a head of an inner hexagon for facilitating adjustment by a wrench.

In the present embodiment, referring to fig. 1, the connecting column 10 is vertically disposed on the needle fixing block 8, in other embodiments, for convenience of installation, the connecting column 10 may be disposed on the needle fixing block 8 in an inclined preset angle or the connecting column 10 is disposed in an L shape, so as to prevent the external fracture fixator from interfering with the body.

In this embodiment, referring to fig. 1 to 3, the needle fixing block 8 is in a straight line shape, the needle fixing block 8 includes an upper fixing block 86 and a lower fixing block 87, the lower fixing block 87 is connected to the second adjusting bracket 6, the upper fixing block 86 and the lower fixing block 87 are correspondingly provided with a semi-cylindrical groove 89 adapted to the fracture fixing needle 9, the upper fixing block 86 and the lower fixing block 87 are connected through a stud 88, the middle of the needle fixing block 8 is provided with a fixing through hole 82, the connecting column 10 is inserted into the fixing through hole 82, two sides of the fixing through hole 82 extend outwards to form a strip-shaped hole 13, one side of the needle fixing block 8 is provided with a threaded hole 83 perpendicular to the strip-shaped hole 13, a screw 108 is inserted into the threaded hole 83, and the needle fixing block 8 is tightened up to fix the.

The needle fixing block 8 and the connecting column 10 are convenient to disassemble, the needle fixing block 8 can be respectively and independently connected with the main body adjusting rod 1 and the three-dimensional thread adjusting part or the fixing rod 12 part, the main body adjusting rod 1 and the three-dimensional thread adjusting part are independently connected with the needle fixing block 8, the structure is simplified, adjustment is convenient, a part of callus is formed at the fracture end in the middle and late postoperative period, the stability of the fracture end is obviously improved in the early period, the main body adjusting rod 1 or the fixing rod 10 is not required to be simultaneously used for fixing, the fixed needle fixing block 8 can be independently connected with the connecting rod, the rod fixing block 11 and the fixing rod 12, or the fixed needle fixing block 8 and the main body adjusting rod 1 and the three-dimensional thread adjusting part are fixed, the elastic fixing function of the fracture fixator is kept, the.

In this embodiment, referring to fig. 1, the two ends of the main body adjusting rod 1 are respectively provided with an extension connecting part, the extension connecting part comprises an extension connecting rod arranged at one end of the main body adjusting rod 1 and a connector arranged at the other end thereof, the connector is matched with the extension connecting rod, two or more main body adjusting rods 1 can be connected with each other through the extension connecting part, so as to connect a plurality of fracture fixators, and the fracture fixators can be fixed across joints and can adapt to fracture backbones with different lengths; wherein, the connecting position and the connecting angle of the fracture fixator are changed by changing the shape and the arrangement angle of the extension connecting rod or the sleeve, so as to achieve the purpose of adapting to different fracture positions; in other embodiments, the two ends of the main body adjusting rod 1 may be provided with extension connecting rods, the extension connecting rods and the fixing rods have the same cross section size and shape, and the extension connecting rods and the fixing rods of two or more fracture fixation devices can be connected through the clamping connecting block 111 or the sleeve of the same specification.

In the present embodiment, the carbon fiber material is used for the main body adjusting rod 1, and in other embodiments, other low elastic modulus materials conforming to the principle of biological fixation may also be used.

Example two

In this embodiment, referring to fig. 2, the difference from the first embodiment is that the main body adjusting rod 1 includes a moving rod 101 and a sleeve 102 slidably sleeved on one end of the moving rod 101, a third adjusting screw 104 penetrates through the sleeve 102, a top thread portion of the third adjusting screw 104 is in threaded connection and axially penetrates through the moving rod 101, the third adjusting screw 104 is rotated from different directions, so that the moving rod 101 extends into or out of the sleeve 102 to adjust the length of the main body adjusting rod 1, and further adjust the distance between the two end needle fixing blocks 8, for convenience of adjustment, the third adjusting screw 104 is provided with a hexagon socket head, which is conveniently adjusted by a wrench.

EXAMPLE III

In this embodiment, referring to fig. 3, the difference from the first embodiment is that the present invention further includes a connecting seat 81, the needle fixing block 8 is disposed on the connecting seat 81, the connecting seat 81 is disposed on the second adjusting bracket 6, the connecting seat 81 is provided with a fixing through hole 82, the connecting post 10 is inserted into the fixing through hole 82, two sides of the fixing through hole 82 are outwardly extended to form a strip-shaped hole 13, one side of the connecting seat 81 is provided with a threaded hole 83 perpendicular to the strip-shaped hole 13, a screw 108 is inserted into the threaded hole 83, the needle fixing block 8 is tightened to fix the connecting post 10 by screwing the screw 108, the needle fixing block 8 and the connecting rod are conveniently disassembled, and the needle fixing block 8 can be separately connected with the main body adjusting rod 1 portion or the fixing rod 12 portion, a portion of the fractured end has been formed with scar at the middle and late stages after surgery, the fractured end stability is significantly improved at the earlier stage, and the, the fixed needle fixing block 8 can be connected with the connecting rod, the rod fixing block 11 and the fixing rod 12 independently or fixed with the main body adjusting rod 1 and the three-dimensional thread adjusting part thereof so as to keep the elastic fixing function of the fracture fixer, the connection is stable and the structure is simplified.

In this embodiment, referring to fig. 3, the needle fixing block 8 includes an upper fixing block 86 and a lower fixing block 87, the upper fixing block 86 and the lower fixing block 87 are correspondingly provided with a semi-cylindrical groove 89 adapted to the fracture fixing needle 9, the upper fixing block 86, the lower fixing block 87 and the connecting seat 81 are connected by a stud 88, wherein the needle fixing block 8 is respectively provided at two sides of the connecting column 10, the needle fixing block 8 is provided with at least one rotation through hole 84, a needle sleeve 85 is rotatably provided in the rotation through hole 84, the fracture fixing needle 9 is fixed in the needle sleeve 85, the needle sleeve 85 is a steel sleeve with a circle of concave neck at the middle part, a circle of convex ring capable of rotating in the concave neck is provided in the rotation through hole 84, so that the steel sleeve is rotatably fixed in the rotation through hole 84, when the joint flexion-extension movable position rotates, the steel needle corresponding to the inserted fracture fixing needle 9 does not move with the backbone, and can also rotate through the rotation between the, therefore, the flexibility of joint movement is ensured, in other embodiments, according to different fracture ranges and positions of patients, the connecting seat 81 can also be set to be an L-shaped or T-shaped or I-shaped connecting seat 81, the needle fixing block 8 is arranged on the connecting seat 81, the specification of the needle fixing block 8 and the number of the fracture fixing needles 9 are adjusted according to the fracture conditions of the patients, different fracture positions and sizes are adapted, as shown in fig. 4, the connecting seat 81 is set to be T-shaped, two needle fixing blocks 8 are respectively arranged on one side of the connecting seat 81, and two fracture fixing needles 9 are parallelly fixed on each needle fixing block 8.

In this embodiment, referring to fig. 4 and 5, a groove is formed on the second adjusting frame 6, and the bottom of the connecting seat 81 is provided with a matching protrusion 15 corresponding to the groove, so as to facilitate installation, and meanwhile, the pin fixing block is limited to prevent the pin fixing block from shifting to cause the fracture end to shift.

It is right above the utility model discloses the explanation that three-dimensional adjustable fracture reduction external fixation ware of moving-static convolution goes on for help understands the utility model discloses, nevertheless the utility model discloses an embodiment does not receive the restriction of above-mentioned embodiment, and any does not deviate from the utility model discloses change, modification, substitution, combination, simplification made under the principle all should be equivalent replacement mode, all contain within the protection scope the utility model discloses a.

Claims

1. The utility model provides a move three-dimensional adjustable fracture reduction external fixation ware of quiet convolution which characterized in that: comprises a main body adjusting rod with adjustable length, two end parts of the main body adjusting rod are respectively provided with a first hinge column, the first hinged column is hinged at the middle part of a first adjusting frame, the end part of the first hinged column is rotatably provided with a first adjusting screw rod, the top end thread part of the first adjusting screw is in threaded connection with one end of the first adjusting frame, the first adjusting frame can be enabled to translate by rotating the first adjusting screw, the first adjusting frame is provided with a second hinged column which is vertical to the translation direction of the first adjusting frame, the second hinged column is hinged at the middle part of a second adjusting frame, a second adjusting screw rod is rotatably arranged on the first adjusting frame, a threaded part at the top end of the second adjusting screw rod is in threaded connection with one end of the second adjusting frame, the second adjusting screw rod is rotated to enable the second adjusting frame to swing up and down, and a needle fixing block is detachably connected to the second adjusting frame; the needle fixing block is provided with a detachable connecting column, the connecting column is provided with a rod fixing block, and the rod fixing block is connected with a fixing rod.

2. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to claim 1, wherein: the main part is adjusted the pole and is included the carriage release lever and the slip cover is established the sleeve pipe of carriage release lever one end, wear to be equipped with a third adjusting screw in the sleeve pipe, the top screw thread portion threaded connection and the axial of third adjusting screw penetrate the carriage release lever.

3. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to claim 1, wherein: the main body adjusting rod comprises a main rod body and a moving rod which is sleeved at one end of the main rod body in a sliding manner, and the moving rod is provided with a first strip-shaped groove; the screw penetrates through the first strip-shaped groove and is connected with the first adjusting frame.

4. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to claim 3, wherein: the screw penetrates through the second strip-shaped groove and is connected with one end, penetrating through the moving rod, of the main rod body; the two-way adjusting screw rod is arranged on the main rod body, and the two ends of the two-way adjusting screw rod are detachably connected with the moving rod.

5. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to claim 1, wherein: the needle fixing block is arranged on the connecting seat, the connecting seat is arranged on the second adjusting frame, the connecting seat is provided with a fixing through hole, the connecting column penetrates through the fixing through hole, and one side of the connecting seat is provided with a threaded hole.

6. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to claim 5, wherein: the second adjusting frame is provided with a groove, and the bottom of the connecting seat is provided with a matched bump corresponding to the groove.

7. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to claim 1, wherein: the spliced pole is located on the needle fixed block, the spliced pole with the surface of needle fixed block is preset angle.

8. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to any one of claims 1-7, wherein: the bone fracture fixing device is characterized in that at least one rotating through hole is formed in the needle fixing block, a needle sleeve is rotatably arranged in the rotating through hole, and a fracture fixing needle is fixed in the needle sleeve.

9. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to any one of claims 5 or 6, wherein: the connecting seat is T-shaped or straight.

10. The dynamic-static combined three-dimensional adjustable external fixator for fracture reduction according to any one of claims 1-7, which is characterized in that: the main part is adjusted the pole and is included the extension connecting portion, the extension connecting portion are used for connecting two or more main part and adjust the pole.