CN110833448B

CN110833448B - Fracture traction reduction device

Info

Publication number: CN110833448B
Application number: CN201911244941.9A
Authority: CN
Inventors: 陈聚伍
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-20
Filing date: 2019-12-06
Publication date: 2023-02-07
Anticipated expiration: 2039-12-06
Also published as: CN110833448A; CN111329566A; CN110432962A; CN111329566B

Abstract

The invention discloses a fracture traction reduction device, which comprises an active adjusting mechanism and a passive adjusting mechanism, wherein adjusting ends of the two adjusting mechanisms are respectively and fixedly provided with a first Kirschner wire and a second Kirschner wire, the first Kirschner wire and the second Kirschner wire are respectively fixed at the far end and the near end of a fracture part, the far end and the near end of the fracture part are matched and butted by respectively adjusting the first Kirschner wire and the second Kirschner wire through the active adjusting mechanism and/or the passive adjusting mechanism, and the positions of bone seams at the far end and the near end of the fracture are corresponding through movement and angle adjustment, so that the push-in reduction butting and fixation are realized. The method has the advantages of simple and easy learning of the adjusting mode, very high precision, reduction of the difficulty of operation and the inaccuracy of butt joint, suitability for operation of doctors in each level after simple training, and provision of a basis for standardized operation of fracture positioning.

Description

Fracture traction reduction device

Technical Field

The invention belongs to the technical field of fracture positioning and fixing instruments, and particularly relates to a fracture part reduction device capable of accurately performing multi-step composite adjustment and fixation.

Background

Femoral shaft fractures and distal femoral fractures are common fractures in clinical practice. Surgical treatment is the preferred treatment method, and reduction butt joint and fixation are firstly carried out on two ends of a fracture part before intramedullary nail fixation and bone plate fixation are carried out. Traction is an important means for reducing femoral fracture and recovering the length of lower limbs. At present, a tractor used for the reduction of lower limb fracture patients in each hospital mainly comprises a traction rope and a pulley, one end of the traction rope is connected with a bracket at the fracture part, and the other end of the traction rope bypasses the pulley to suspend weights, and traction force is controlled by increasing the number of the weights or changing the weight of the weights manually. The patient lies in the sickbed and can move and bounce, so that the traction force is changed, and once the traction force is changed, the weight of the weight is adjusted. For the existing manual control method, the frequent replacement of the weights is very inconvenient, which not only increases the burden on the nursing staff in the hospital, but also brings trouble to the reduction of the fracture patient. On the other hand, because fracture position distal end is connected to the one end of haulage rope, and needs the traction force great, leads to the fracture distal end to be followed the haulage rope direction only by the direction of haulage, and fracture distal end and near-end have crisscross and torsion condition usually after the fracture, belongs to the rigidity through the mode of drawing the fracture distal end among the prior art and pulls, is difficult for rotating and swing the fracture to can't reach the best effect that resets.

Disclosure of Invention

Aiming at the problems that the multi-angle adjustment flexibility of the existing fracture positioning and fixing device is poor or the adjustment and movement of any angle and position cannot be realized, the invention provides the resetting device which can be suitable for carrying out multi-step composite adjustment on any fracture situation, so that the fracture part can be butted quickly and accurately, the fracture part has higher constraint performance, and the subsequent operation on the fracture part can be carried out smoothly.

The technical scheme adopted by the invention for solving the technical problems is as follows: a fracture traction reduction device comprises an active adjusting mechanism and a passive adjusting mechanism, wherein adjusting ends of the two adjusting mechanisms are fixedly provided with a first Kirschner wire and a second Kirschner wire respectively, the first Kirschner wire and the second Kirschner wire are fixed at the far end and the near end of a fracture part respectively, and the far end and the near end of the fracture part are matched and butted by adjusting the first Kirschner wire and the second Kirschner wire respectively through the active adjusting mechanism and/or the passive adjusting mechanism. The active adjusting mechanism is a traction assembly A, the traction assembly A comprises a first three-dimensional adjusting mechanism, the bottom of the first three-dimensional adjusting mechanism is fixed, and the control tail end of the first three-dimensional adjusting mechanism is fixed with the first Kirschner wire; the passive adjusting mechanism is a traction assembly A, a traction assembly B, a traction assembly C or a traction assembly D. The traction assembly B comprises a vertical rod, the upper end of the vertical rod is transversely connected with a flat rod, the tail end of the flat rod is provided with an angle adjusting mechanism, and an adjusting part of the tail end angle adjusting mechanism is fixed with the Kirschner wire II. Traction assembly C include the pole setting, pole setting upper end transverse connection has the flat bar, the flat bar end has one section to prevent changeing the inserted bar, still is provided with banding ke shi needle holder, this banding ke shi needle holder contains horizontal jack and can matches the cartridge on preventing changeing the inserted bar, has a series of vertical pinholes respectively on this banding ke shi needle holder and is used for the cover solid phase to answer ke shi needle two. The traction assembly D comprises a second three-dimensional adjusting mechanism, the bottom of the second three-dimensional adjusting mechanism is fixed, the control end of the second three-dimensional adjusting mechanism is fixed with a vertical rod, the upper end of the vertical rod is transversely connected with a flat rod, the tail end of the flat rod is provided with a section of anti-rotation inserted rod, a strip Kirschner wire base is further arranged, the strip Kirschner wire base comprises a transverse jack and can be inserted into the anti-rotation inserted rod in a matching mode, and the strip Kirschner wire base is respectively provided with a series of vertical pinholes for sleeving a second solid phase corresponding Kirschner wire.

In addition, a tail end angle adjusting mechanism can be arranged at the tail end of the traction assembly A.

Angle adjustment mechanism be provided with rotatory kirschner wire seat at corresponding member end, rotatory kirschner wire seat is including fixing at the terminal rotator of corresponding member, rotatory lid and slip rotary rod, the mutual lock of rotator and rotatory lid is fixed, have along the axial direction perpendicular to let a card hole and match and install the slip rotary rod between rotator and rotatory lid, be provided with the rotation lock wire or the clamp to slip rotary rod locking at rotatory lid, the both ends of slip rotary rod are provided with vertical pilot hole respectively and match and install the kirschner wire, lock the kirschner wire through kirschner wire or clamp to the kirschner wire.

Or, angle adjustment mechanism be provided with at corresponding member end and can rotate rotatory kirschner wire seat, the rotatory kirschner wire seat of slidable includes the suit at corresponding member end and can the pivoted rotator, rotatory lid and slip rotary rod, the mutual lock of rotator and rotatory lid is fixed, there is the card hole of stepping down and match and install the slip rotary rod along the axial direction perpendicular between rotator and rotatory lid, be provided with at rotatory lid to the rotation lock wire or the clamp of slip rotary rod locking, the both ends of slip rotary rod are provided with vertical pilot hole respectively and match and install the kirschner wire, lock the kirschner wire through kirschner wire lock wire clamp or clamp.

The axis of the sliding rotary rod is perpendicular to the axis of the corresponding rod, but does not intersect.

The first three-dimensional adjusting mechanism comprises a first-level rod piece vertical rod, a second-level rod piece longitudinal shaft, a third-level rod piece vertical shaft and a fourth-level rod piece transverse shaft, wherein the vertical rod piece is fixed on the bedstead or the support by a fixing piece, the upper end of the vertical rod piece is connected with the longitudinal shaft through a transverse three-way seat, the tail end of the longitudinal shaft is connected with the vertical shaft through a lifting three-way seat, and the upper end of the vertical shaft is connected with the transverse shaft through a longitudinal three-way seat; the angle adjusting mechanism is positioned at the tail end of the transverse shaft; each tee joint seat comprises a seat body, an axial through hole is formed in the middle of the seat body and used for being sleeved with a lower-level rod piece and being locked, and a radial connecting seat is fixed on the side wall of the seat body and used for being connected with a higher-level rod piece and being locked.

The three-dimensional adjusting mechanism II comprises a first-level rod piece vertical rod, a second-level rod piece transverse screw rod, a third-level rod piece longitudinal screw rod and a fourth-level rod piece lifting rod, wherein the vertical rod piece is fixed on the bedstead or the support by a fixing piece, the upper end of the vertical rod piece is connected with the transverse screw rod through a longitudinal tee joint, the tail end of the transverse screw rod is connected with the longitudinal screw rod through a transverse tee joint, and the upper end of the longitudinal screw rod is connected with the lifting rod through a lifting tee joint; the angle adjusting mechanism is positioned at the tail end of the transverse shaft; each tee joint seat comprises a seat body, an axial through hole is formed in the middle of the seat body and used for being sleeved with a lower-level rod piece and being locked, and a radial connecting seat is fixed on the side wall of the seat body and used for being connected with a higher-level rod piece and being locked.

It just can rotate to advance to revolve the control cap inner cover of pedestal, advances to revolve the control cap and pass through axial slip lock wire or clamp and pedestal inner fixed be used for preventing axial slip together, advances to revolve the control cap and pass through rotatory lock wire or the fixed subordinate's member of clamp and be used for preventing subordinate's member and rotate, perhaps, advances to revolve the control cap lateral wall and run through and be provided with inner radial jack, it has the rotation control board to run through the cartridge in the inner radial jack, subordinate's member is provided with along the axial draw-in groove that radially caves in or runs through simultaneously, the rotation control board is located the axial draw-in groove simultaneously.

Further, the outer end fixedly connected with advancing device of pedestal, this advancing device are including connecting the nut restraint cover in the pedestal outside, and outer end wall center be provided with the screw rod export, and the terminal portion that subordinate's member is located the pedestal axial through-hole is provided with the external screw thread and forms the screw thread section, and the screw thread section can be followed the screw rod export is drawn forth, is equipped with adjusting nut at screw thread section cover, nut restraint cover side is provided with can the side opening can make adjusting nut expose so that to adjust nut rotary operation.

A fracture traction reduction device is characterized by comprising an active adjusting mechanism and a passive adjusting mechanism, wherein adjusting ends of the two adjusting mechanisms are respectively and fixedly provided with a first Kirschner wire and a second Kirschner wire, the first Kirschner wire and the second Kirschner wire are respectively fixed at the far end and the near end of a fracture part, the far end and the near end of the fracture part are matched and butted by respectively adjusting the first Kirschner wire and the second Kirschner wire through the active adjusting mechanism and/or the passive adjusting mechanism, the active adjusting mechanism is a traction assembly D, the traction assembly D comprises a second three-dimensional adjusting mechanism, the bottom of the second three-dimensional adjusting mechanism is fixed, a vertical rod is fixed at a control tail end of the second three-dimensional adjusting mechanism, a flat rod is transversely connected to the upper end of the vertical rod, a section of an anti-rotation inserting rod is arranged at the tail end of the flat rod, a strip-shaped Kirschner wire seat is further provided with a transverse inserting hole which can be matched and inserted in the anti-rotation inserting rod, and a series of vertical needle holes for sleeving a solid phase corresponding first Kirschner wire are respectively arranged on the strip-shaped Kirschner wire seat; passive adjustment mechanism is for drawing subassembly C, should draw subassembly C and include the pole setting, and pole setting upper end transverse connection has the flat bar, and the flat bar end has one section to prevent changeing the inserted bar, still is provided with banding ke shi needle holder, and this banding ke shi needle holder contains horizontal jack and can matches the cartridge on preventing changeing the inserted bar, has a series of vertical pinholes to be used for the cover solid phase to correspond ke shi needle two on this banding ke shi needle holder respectively.

The three-dimensional rods of the three-dimensional adjusting mechanism are connected through a two-dimensional control mechanism, the two-dimensional control mechanism comprises a middle shaft, a nut frame, a nut, a mechanism frame, a two-way tightening frame and a guide key, the mechanism frame comprises a cylindrical central shaft hole for sleeving the middle shaft, the front end part of the mechanism frame is used for connecting the nut frame, and the rear end part of the mechanism frame is used for connecting the two-way tightening frame; the middle shaft is a cylindrical rod body, one end of the middle shaft is provided with a threaded section positioned in the nut frame, and the other end of the middle shaft is provided with an axial flat sliding groove or a key groove positioned in the bidirectional tightening frame; the screw rack comprises a connecting shaft cavity and a screw cavity, the connecting shaft cavity is fixedly sleeved at one end of the mechanism rack, a screw is sleeved in the screw cavity, a part of the screw is exposed out of the screw cavity and is convenient to rotate by hand, and the screw is sleeved in a threaded section of the middle shaft; two-way tight frame of stopping includes the base and fixes the tight clamp of circumference of stopping and the tight clamp of axial of base both sides, and the tight clamp matching of circumference of stopping cup joints tip behind the framework, the axis is cup jointed in the tight clamp matching of axial braking, the base set up the matching suit in the guide key of the flat spout of axial or keyway, the tight clamp of circumference of stopping is provided with respectively with the tight clamp of axial braking and can be locked dead locking mechanism, when the tight clamp locking of circumference of stopping and the tight clamp of axial braking unclamps, the axis only can follow the central shaft hole endwise slip of framework and can not rotate, when the tight clamp locking of axial braking and the tight clamp of circumference of stopping unclamp, the center pin can only follow the axle center and rotate and can not endwise slip, when two tight clamps of stopping all lock, then the center pin is fixed as an organic whole with the framework.

The tight clamp of circumference and the tight clamp of axial brake all are the ring form and have the opening, and the opening part includes two locking ends that have fit clearance, has corresponding locking hole on two locking ends respectively, runs through installation clamp lock wire in the adjacent locking hole. The bidirectional brake tightening frame further comprises a center support plate which is connected with the base, the circumferential brake tightening clamp and the axial brake tightening clamp are respectively located on two sides of the center support plate, and a center shaft hole is formed in the center of the center support plate and used for sleeving the center shaft.

The invention has the beneficial effects that: according to the invention, a first Kirschner wire and a second Kirschner wire are respectively fixedly installed at the adjusting ends of the two adjusting mechanisms, then the first Kirschner wire and the second Kirschner wire are respectively fixed at the far end and the near end of a fracture part, and the positions of bone seams at the far end and the near end of the fracture correspond by moving (transversely moving, longitudinally moving and lifting moving) and adjusting the angle of the two adjusting mechanisms or one adjusting mechanism, so that push-reset butt joint and fixation are realized. The adjusting mode can realize the functions of stretching, rotating (turning), up-down left-right translation alignment and resetting butt joint of the fracture position, and the stability degree of the butt joint of the bone seams supported by each steel piece is high, thereby being convenient for the subsequent operation. The method has the advantages of simple and easy learning of the adjusting mode, very high precision, reduction of the difficulty of operation and the inaccuracy of butt joint, suitability for operation of doctors in each level after simple training, and provision of a basis for standardized operation of fracture positioning.

The device can be operated under the perspective condition, and provides powerful support for the non-invasive surgery. In the two adjusting mechanisms, two independent adjusting mechanisms can be adopted, one adjusting mechanism can be simplified to be a fixing mechanism, and the other adjusting mechanism is a multi-dimensional adjusting mechanism, so that X rays can be reasonably avoided in the perspective direction, and the best realization effect is achieved.

Drawings

Fig. 1 is a schematic diagram of the application state of the present invention.

FIG. 2 is a comparative illustration of the present invention employing traction assemblies.

Fig. 3 is a schematic view of the traction assembly a of the present invention.

Fig. 4 is a schematic structural view of the pulling assembly B of the present invention.

Fig. 5 is a schematic view of the construction of the pulling assembly C of the present invention.

Fig. 6 is a schematic structural view of the pulling assembly D of the present invention.

Fig. 7 is one of the enlarged structural diagrams of the part E in fig. 3.

Fig. 8 is a schematic end view of the structure of fig. 7.

Fig. 9 is a side view of the structure of fig. 7.

Fig. 10 isbase:Sub>A schematic view of the cross-sectional structurebase:Sub>A-base:Sub>A in fig. 8.

Fig. 11 is a schematic view of a cross-sectional structure B-B in fig. 9.

Fig. 12 is a schematic sectional view of the rotator in fig. 7.

Fig. 13 is a half sectional view schematically showing the structure of the sliding rotation lever of fig. 7.

Fig. 14 is an enlarged view of the portion F of fig. 6.

Fig. 15 is a side view of the structure of fig. 14.

Fig. 16 is a schematic view of the vertical cross-section structure of fig. 15.

Fig. 17 is a structural schematic diagram of a slidable k-wire holder.

Fig. 18 is a second schematic view of the structure of the part E in fig. 3.

Figure 19 is a schematic view of the construction of the body clip of figure 18.

Fig. 20 is a schematic perspective view of a two-dimensional control mechanism according to the present invention.

Fig. 21 is a schematic cross-sectional view of fig. 20.

Fig. 22 is a schematic perspective view of the bidirectional brake bracket of fig. 20.

Reference numbers in the figures: the structure comprises a vertical rod 1, a lifting tee joint seat 2, a longitudinal screw rod 31, a transverse screw rod 32, a threaded section 321, a transverse tee joint seat 4, a seat body 41, an axial through hole 42, a radial connecting seat 43, an inner end radial inserting hole 44, an annular groove 45, an axial sliding locking hole 46, a rotating locking hole 47, a longitudinal axis 5, a longitudinal tee joint seat 6, a lifting rod 7, a first flat rod 71, a first anti-rotating inserted rod 72, a first Kirschner wire seat 8, a second Kirschner wire seat 9, a first vertical rod 10, a second flat rod 101, a second anti-rotating inserted rod 102, a second vertical rod 11, a third flat rod 111, a rotating Kirschner wire seat 12, a rotating body 121, a rotating cover 122, a sliding cover 123, a rotating rod 124, a fixed wire 125, a rotating locking wire 126, a Kirschner wire 127, a position yielding hole 13, a propelling device 13, a restraining sleeve 131, an adjusting sleeve 132, a sleeve locking wire 133, a control nut 134, a control screw 14, a rotating locking wire 126, a rotating clamp 18 and a rotating clamp plate 17, a rotating clamp plate 17 and a rotating clamp. M1 and M2 are respectively an active adjusting mechanism and a passive adjusting mechanism, and P1 and P2 are respectively a three-dimensional adjusting mechanism I and a three-dimensional adjusting mechanism II.

Detailed Description

After fracture, the fracture far end and the fracture near end are dislocated, rotated and swung, in the process of abutting and resetting the fracture far end and the fracture near end, a fracture traction resetting device is adopted, and comprises an active adjusting mechanism M1 and a passive adjusting mechanism M2, as shown in figure 1, the adjusting ends of the two adjusting mechanisms are fixedly provided with a Kirschner wire I and a Kirschner wire II respectively, the Kirschner wire I and the Kirschner wire II are fixed at the far end and the near end of the fracture part respectively, the fracture far end and the fracture near end are required to be adjusted and dragged to be separated firstly, then the Kirschner wire I and the Kirschner wire II are respectively adjusted by the active adjusting mechanism and/or the passive adjusting mechanism to enable the fracture far end and the fracture near end to correspond to the positions of bone seams of the fracture part through moving (transverse moving, longitudinal moving and lifting moving), then inward pushing is carried out to realize resetting and abutting, and finally the resetting part is fixed.

The active adjusting mechanism and the passive adjusting mechanism can select two combinations of which the traction component A, B, C, D can be matched suitably.

Example 1: in this embodiment, the active adjustment mechanism is used as the traction assembly a, and the passive adjustment mechanism is also used as the traction assembly a.

As shown in fig. 3, the traction assembly a includes a first three-dimensional adjusting mechanism P1, the bottom of which is fixed, and the control end of which fixes the first k-wire. Specifically, the first three-dimensional adjusting mechanism comprises a first-stage rod piece, namely the upright 1, a second-stage rod piece, namely the longitudinal shaft 5, a third-stage rod piece, namely the vertical shaft 19, and a fourth-stage rod piece, namely the transverse shaft 17. Wherein the upright stanchion is fixed on the bedstead or the bracket (carrier) by a fixing piece, and the fixing part is a common lock catch part in the field or more than two transverse bolts. As shown in figure 3, the upper end of the vertical rod 1 is connected with a vertical shaft 5 through a horizontal tee joint 4, the tail end of the vertical shaft 5 is connected with a vertical shaft 19 through a lifting tee joint 2, and the upper end of the vertical shaft 19 is connected with a horizontal shaft 17 through a vertical tee joint 6.

Further, as shown in fig. 14-16, the inner end of the base body 41 of each tee seat (i.e. the transverse tee seat 4, the lifting tee seat 2 and the longitudinal tee seat 6) is sleeved with a screwing control cap 14 and can rotate, and the screwing control cap 14 is fixed with the inner end of the base body 41 through an axial sliding lock wire to prevent axial sliding. The rotation control cap 14 is also used to prevent the rotation of the lower rod (the vertical axis 5 is the lower rod with respect to the vertical rod 1, the vertical axis 19 is the lower rod with respect to the vertical axis 5, and the horizontal axis 17 is the lower rod with respect to the vertical axis 19), and the lower rod is fixed by the rotating lock wire to prevent the rotation of the lower rod, as shown in fig. 16, there is an annular groove 45 at the inner end of the housing 41, and the inner end of the rotating lock wire is inserted into the annular groove 45, so that the rotation lock wire can prevent the rotation control cap 14 from falling off from the inner end of the housing 41, and the rotation lock wire can prevent the rotation control cap 14 from rotating after being locked. By the mode, the rotation and locking of lower-level rod pieces in the valve body of each tee seat (namely the transverse tee seat 4, the lifting tee seat 2 and the longitudinal tee seat 6) can be realized, namely the three-dimensional angle adjustment of the Kirschner wire on the whole can be realized. In addition, the side wall of the screwing control cap 14 is provided with an inner end radial jack 44 in a penetrating way, the rotary control plate 15 is inserted in the inner end radial jack 44 in a penetrating way, meanwhile, the lower level rod piece is provided with an axial clamping groove which is sunken or penetrated along the radial direction, and the rotary control plate 15 is positioned in the axial clamping groove at the same time; in this way, after the screwing control cap 14 is locked and does not rotate any more, the lower rod in the valve body of each tee joint seat (namely, the horizontal tee joint seat 4, the lifting tee joint seat 2 and the vertical tee joint seat 6) can only move axially. Still further, a pressing plate 16 can be fixed on the valve seat for preventing the rotary control plate 15, namely after the rotary control plate 15 is attached to the pressing plate 16, the rotary control plate 15 and the pressing plate can be fixed through bolts, so that the rotation of the lower level rod piece relative to the tee seat is limited.

The mode of controlling the lower rod to axially move in the corresponding three-way seat may be manual push-pull control, and an axial adjusting mechanism may also be further provided, that is, a mechanism for controlling the lower rod to axially move in the corresponding three-way seat is provided, the mechanism may be a mode as shown in fig. 14-16, a propulsion device 13 is fixedly connected to the outer end of the seat body 41, the propulsion device 13 includes a nut constraining sleeve 131 connected to the outer side of the seat body 41, a screw outlet is provided in the center of the outer end wall of the nut constraining sleeve 131, an external thread is provided at the end portion of the lower rod located in the axial through hole 42 of the seat body 41 to form a threaded section 321, the threaded section 321 can be led out from the screw outlet, and an adjusting nut 132 is sleeved on the threaded section 321. Also, a side opening is provided at the side of the nut constraining sheath 131 to expose the adjusting nut 132 for a rotation operation of the adjusting nut 132. By screwing the adjusting nut 132, the lower stage rod can be advanced and retreated in the axial direction.

Example 2: in this embodiment, an active adjustment mechanism is used as the traction assembly a to fixedly mount the first kirschner wire, and a passive adjustment mechanism is also used as the traction assembly B to fixedly mount the second kirschner wire.

The structure of the traction assembly A is the same as that of the traction assembly A in the embodiment 1, details are omitted, the traction assembly B comprises a vertical rod, the upper end of the vertical rod is transversely connected with a flat rod, the tail end of the flat rod is provided with an angle adjusting mechanism, and an adjusting part of the angle adjusting mechanism at the tail end fixes the Kirschner wire II.

The angle adjusting mechanism is arranged at the tail end of the transverse shaft, and as shown in fig. 7-13, the angle adjusting mechanism is provided with a rotary kirschner wire seat 12 at the tail end of a corresponding rod piece (namely the transverse shaft) for installing the kirschner wire. Rotatory ke shi needle holder 12 is including fixing at the terminal rotator 121 of corresponding member, rotatory lid 122 and slip rotary rod 123, rotator 121 and the mutual lock of rotatory lid 122 are fixed, there is the card hole of stepping down and match and install slip rotary rod 123 along the axial perpendicularly between rotator 121 and rotatory lid 122, be provided with the rotation locking wire to slip rotary rod 123 locking at rotatory lid 122, the both ends of slip rotary rod 123 are provided with vertical pilot hole respectively and match and install the ke shi needle, lock the ke shi needle through the ke shi needle locking wire. The axis of the sliding rotation rod 123 is perpendicular to the axis of the corresponding rod, but does not intersect.

Example 3: in this embodiment, the driving adjustment mechanism is used for fixedly mounting the first kirschner wire for the traction assembly a, and the driven adjustment mechanism is also used for fixedly mounting the second kirschner wire for the traction assembly B.

The angle adjusting mechanism is located at the tail end of the cross shaft, the angle adjusting mechanism is arranged at the tail end of the corresponding rod and can rotate the rotary kirschner wire holder 12, as shown in fig. 17, the rotary kirschner wire holder 12 capable of sliding comprises a rotary body 121 which is sleeved at the tail end of the corresponding rod and can rotate, a rotary cover 122 and a sliding rotary rod 123, the rotary body 121 and the rotary cover 122 are fastened and fixed with each other, a yielding clamping hole is vertically formed in the axial direction between the rotary body 121 and the rotary cover 122 and is matched with the rotary rod 123, a rotary locking wire for locking the sliding rotary rod 123 is arranged on the rotary cover 122, kirschner wires are arranged at two ends of the sliding rotary rod 123 in a vertical assembling hole and matched with the assembling hole, and are locked by the kirschner wires.

Example 4: in this embodiment, the driving adjustment mechanism is used for fixedly mounting the first kirschner wire for the traction assembly a, and the driven adjustment mechanism is also used for fixedly mounting the second kirschner wire for the traction assembly C.

Wherein pull subassembly A in subassembly A's the structure and the embodiment 1 and pull subassembly A the same, not detailing, pull subassembly C and include the pole setting, pole setting upper end transverse connection has the flat bar, and the flat bar end has one section to prevent changeing the inserted bar, still is provided with banding ke shi needle holder, and this banding ke shi needle holder contains horizontal jack and can matches the cartridge on preventing changeing the inserted bar, has a series of vertical pinholes to be used for the cover solid phase to correspond ke shi needle two on this banding ke shi needle holder respectively.

As shown in fig. 6, the strip-shaped kirschner wire holder can have various models, the lengths of the different models are different, the number of the jacks distributed is different, and the best jack is selected for inserting the corresponding kirschner wire according to the position above the fracture part where the strip-shaped kirschner wire holder is located.

Example 5: in this embodiment, the driving adjustment mechanism is used to fixedly mount the first kirschner wire for the traction assembly a, and the driven adjustment mechanism is also used to fixedly mount the second kirschner wire for the traction assembly D.

The structure of the traction assembly A is the same as that of the traction assembly A in the embodiment 1, details are omitted, the traction assembly D comprises a three-dimensional adjusting mechanism II P2, as shown in figure 6, the bottom of the three-dimensional adjusting mechanism II is fixed, a vertical rod is fixed at the control tail end of the three-dimensional adjusting mechanism II, a flat rod is transversely connected to the upper end of the vertical rod, a section of anti-rotation inserted rod is arranged at the tail end of the flat rod, a strip Kirschner wire base is further arranged, the strip Kirschner wire base comprises a transverse insertion hole and can be inserted into the anti-rotation inserted rod in a matched mode, and a series of vertical needle holes are formed in the strip Kirschner wire base and used for sleeving a solid phase corresponding Kirschner wire II. The strip-shaped Kirschner wire seat can be in various models, the lengths of different models are different, the number of the jacks distributed is different, and the best jack is selected for inserting the corresponding Kirschner wire according to the position above the fracture part where the strip-shaped Kirschner wire seat is positioned.

The second three-dimensional adjusting mechanism in this embodiment is shown in fig. 6, and includes a first-stage rod vertical rod, a second-stage rod horizontal screw rod, a third-stage rod vertical screw rod, and a fourth-stage rod lifting rod, wherein the vertical rod is fixed on the bed frame or the support by a fixing member, the upper end of the vertical rod is connected with the horizontal screw rod through a vertical three-way seat 6, the tail end of the horizontal screw rod is connected with the vertical screw rod through a horizontal three-way seat 4, and the upper end of the vertical screw rod is connected with the lifting rod through a lifting three-way seat; the angle adjusting mechanism is positioned at the tail end of the transverse shaft; each three-way seat comprises a seat body 41, an axial through hole 42 is formed in the middle of the seat body 41 and used for being sleeved with a lower-level rod piece and being locked, and a radial connecting seat 43 is fixed on the side wall of the seat body 41 and used for being connected with an upper-level rod piece and being locked.

Further, as shown in fig. 14-16, the inner end of the base body 41 of each tee seat (i.e. the transverse tee seat 4, the lifting tee seat 2 and the longitudinal tee seat 6) is sleeved with a screwing control cap 14 and can rotate, and the screwing control cap 14 is fixed with the inner end of the base body 41 through an axial sliding lock wire to prevent axial sliding. The screwing control cap 14 is also used for preventing the lower level rod piece from rotating, and the lower level rod piece is fixed through a rotary lock wire so as to prevent the lower level rod piece from rotating; by the mode, the rotation and locking of lower-level rod pieces in the valve body of each tee seat (namely the transverse tee seat 4, the lifting tee seat 2 and the longitudinal tee seat 6) can be realized, namely the three-dimensional angle adjustment of the Kirschner wire on the whole can be realized. In addition, the side wall of the screwing control cap 14 is provided with an inner end radial jack 44 in a penetrating way, the rotary control plate 15 is inserted in the inner end radial jack 44 in a penetrating way, meanwhile, the lower level rod piece is provided with an axial clamping groove which is sunken or penetrated along the radial direction, and the rotary control plate 15 is positioned in the axial clamping groove at the same time; in this way, after the advance-rotation control cap 14 is locked and does not rotate any more, the lower-level rod in the valve body of each tee joint seat (namely the transverse tee joint seat 4, the lifting tee joint seat 2 and the longitudinal tee joint seat 6) can only move axially. Still further, a pressing plate 16 can be fixed on the valve seat for preventing the rotary control plate 15, namely after the rotary control plate 15 is attached to the pressing plate 16, the rotary control plate 15 and the pressing plate can be fixed through bolts, so that the rotation of the lower level rod piece relative to the tee seat is limited.

The mode of controlling the lower level rod to axially move in the corresponding three-way seat may be manual push-pull control, and an axial adjusting mechanism may also be further provided, that is, a mechanism for controlling the lower level rod to axially move in the corresponding three-way seat is provided, the mechanism may be a mode as shown in fig. 14-16, a propulsion device 13 is fixedly connected to the outer end of the seat body 41, the propulsion device 13 includes a nut constraining sleeve 131 connected to the outer side of the seat body 41, a screw outlet is provided in the center of the outer end wall of the nut constraining sleeve 131, an external thread is provided at the end portion of the lower level rod located in the axial through hole 42 of the seat body 41 to form a threaded section, the threaded section can be led out from the screw outlet, and an adjusting nut 132 is sleeved on the threaded section. Also, a side opening is provided at a side of the nut restraining sleeve 131 to expose the adjustment nut 132 to facilitate a rotating operation of the adjustment nut 132. By screwing the adjusting nut 132, the lower stage rod can be advanced and retreated in the axial direction.

Example 6: a fracture traction reduction device comprises an active adjusting mechanism and a passive adjusting mechanism, wherein adjusting ends of the two adjusting mechanisms are fixedly provided with a first Kirschner wire and a second Kirschner wire respectively. The first kirschner wire and the second kirschner wire are respectively fixed at the far end and the near end of the fracture part, and the far end and the near end of the fracture part are in matched butt joint by respectively adjusting the first kirschner wire and the second kirschner wire through the active adjusting mechanism and/or the passive adjusting mechanism.

The active adjusting mechanism is a traction assembly D as shown in figure 2, the traction assembly D comprises a second three-dimensional adjusting mechanism, the bottom of the second three-dimensional adjusting mechanism is fixed, the control tail end of the second three-dimensional adjusting mechanism is fixed with a vertical rod, the upper end of the vertical rod is transversely connected with a flat rod, the tail end of the flat rod is provided with a section of anti-rotation inserted rod, the active adjusting mechanism is further provided with a strip Kirschner wire base, the strip Kirschner wire base comprises a transverse jack, the transverse jack can be matched and inserted on the anti-rotation inserted rod, and the strip Kirschner wire base is respectively provided with a series of vertical pinholes for sleeving a solid phase corresponding Kirschner wire I.

Further, as shown in fig. 14-16, the inner end of the base body 41 of each tee seat (i.e. the transverse tee seat 4, the lifting tee seat 2 and the longitudinal tee seat 6) is sleeved with a screwing control cap 14 and can rotate, and the screwing control cap 14 is fixed with the inner end of the base body 41 through an axial sliding lock wire to prevent axial sliding. The screwing control cap 14 is also used for preventing the lower level rod piece from rotating, and the lower level rod piece is fixed through a rotary lock wire so as to prevent the lower level rod piece from rotating; by the mode, the rotation and locking of lower-level rod pieces in the valve body of each tee seat (namely the transverse tee seat 4, the lifting tee seat 2 and the longitudinal tee seat 6) can be realized, namely the three-dimensional angle adjustment of the Kirschner wire on the whole can be realized. In addition, the side wall of the screwing control cap 14 is provided with an inner end radial jack 44 in a penetrating way, the rotary control plate 15 is inserted in the inner end radial jack 44 in a penetrating way, meanwhile, the lower level rod piece is provided with an axial clamping groove which is sunken or penetrated along the radial direction, and the rotary control plate 15 is positioned in the axial clamping groove at the same time; in this way, after the screwing control cap 14 is locked and does not rotate any more, the lower rod in the valve body of each tee joint seat (namely, the horizontal tee joint seat 4, the lifting tee joint seat 2 and the vertical tee joint seat 6) can only move axially. Still further, a pressing plate 16 can be fixed on the valve seat for preventing the rotary control plate 15, namely after the rotary control plate 15 is attached to the pressing plate 16, the rotary control plate 15 and the pressing plate can be fixed through bolts, so that the rotation of the lower level rod piece relative to the tee seat is limited.

The mode of controlling the lower level rod to axially move in the corresponding three-way seat may be manual push-pull control, and an axial adjusting mechanism may also be further provided, that is, a mechanism for controlling the lower level rod to axially move in the corresponding three-way seat is provided, the mechanism may be a mode as shown in fig. 14-16, a propulsion device 13 is fixedly connected to the outer end of the seat body 41, the propulsion device 13 includes a nut constraining sleeve 131 connected to the outer side of the seat body 41, a screw outlet is provided in the center of the outer end wall of the nut constraining sleeve 131, an external thread is provided at the end portion of the lower level rod located in the axial through hole 42 of the seat body 41 to form a threaded section, the threaded section can be led out from the screw outlet, and an adjusting nut 132 is sleeved on the threaded section. Also, a side opening is provided at the side of the nut constraining sheath 131 to expose the adjusting nut 132 for a rotation operation of the adjusting nut 132. By screwing the adjusting nut 132, the lower stage rod member can be advanced and retreated in the axial direction.

Passive adjustment mechanism is as drawing subassembly C in fig. 2, should draw subassembly C including the pole setting, and pole setting upper end transverse connection has the flat bar, and the flat bar end has one section to prevent changeing the inserted bar, still is provided with banding ke shi needle holder, and this banding ke shi needle holder contains horizontal jack and can matches the cartridge and prevent changeing on the inserted bar, has a series of vertical pinholes to be used for cover solid phase to answer ke shi needle two on this banding ke shi needle holder respectively. As shown in fig. 6, the strip-shaped kirschner wire holder can have various models, the lengths of the different models are different, the number of the jacks distributed is different, and the best jack is selected for inserting the corresponding kirschner wire according to the position above the fracture part where the strip-shaped kirschner wire holder is located.

Example 7: on the basis of the scheme, the clamp is modified correspondingly. The clamp that can adopt independent clamp, or adopt the domain main part to link together, for example a disjunctor formula clamp is shown in fig. 19, and this clamp has included pedestal 41, and pedestal 41 both sides are fixed with clamp 23 respectively, and the opening part of every clamp has the connection piece, has lockhole 24 on the connection piece, fixes the lockhole together through the through screw, reaches the purpose with above-mentioned lock silk locking. As shown in fig. 18, the structure of the portion E in fig. 3 can be changed to that shown in fig. 18, and the fixation is performed by a clip and a through screw instead of the original locking fixation.

Example 8: on the basis of the above scheme, the three-dimensional rods of the three-dimensional adjusting mechanism are connected through a two-dimensional control mechanism, such as the two-dimensional control mechanism shown in fig. 1, for controlling the movement and rotation of two rods perpendicular to each other. In fig. 1, a circumferential braking clamp B51 and an axial braking clamp B54 are respectively installed on two sides of a framework B4, a central shaft B1 is sleeved in an axial hole of the three, the axial movement of the central shaft B1 is adjusted by a nut B3, the circumferential braking clamp B51 restrains the rotation of the central shaft B1, and the axial movement of the central shaft B1 is restrained by the axial braking clamp B54. One side of the machine frame B4 is vertically provided with a connecting head B46, or is sleeved on the machine frame or is in an integral structure with the machine frame through a connecting sleeve in a matching manner, the connecting seat vertical to one side of the connecting sleeve can be fixedly connected with the vertical rod piece, and the connecting seat is not required to rotate and move axially when being connected with the rod piece, so that the corresponding rod piece can be provided with a positioning hole for firm connection. But the two-dimensional node position for adjustment is required, and movable adjustment and locking are required, so that the locking mechanism shown in figure 1 can provide flexible adjustment during loosening and firmness and reliability after locking.

Specifically, as shown in fig. 2, the machine frame B4 includes a cylindrical central shaft hole, a central shaft hole B45 is used for sleeving the central shaft B1, a front end B41 of the central shaft hole is used for connecting the nut frame B2, a rear end B42 of the central shaft hole is used for connecting the bidirectional tightening frame B5, and the central shaft B1 is sleeved in the central shaft hole B45 in a matching manner and can rotate and axially slide along the shaft hole.

As shown in fig. 5 and 6, the bottom bracket B1 is a cylindrical rod, one end of which is provided with a threaded section B14 located in the nut frame B2, and the other end of which is provided with an axial flat sliding groove B11 or a keyway located in the bidirectional tightening frame B5. And the two ends of the middle shaft B1 are respectively provided with a transverse split groove, the bottom of the transverse split groove is provided with a transverse end lock hole B12, and the side wall of the transverse split groove is provided with a screw hole and penetrates through an installation end lock wire B13.

The nut frame B2 shown in fig. 2 includes a coupling cavity B21 and a nut cavity B22, the centers of the coupling cavity B21 and the nut cavity B22 have shaft holes, the shaft holes of the coupling cavity B21 are sleeved at one end of the machine frame, a rotary locking screw B24 is installed in a rotary locking hole B23 of a side wall of the coupling cavity B21 and a positioning clamping groove B43 of a side wall of the machine frame B4, and the two positioning clamping grooves are fixed together by the rotary locking screw B24, that is, the coupling cavity B21 and the machine frame B4 are fixed together. The nut is sleeved in the nut cavity B22, but the nut cavity B22 is of a hollow structure, so that most of the nut is exposed to facilitate handheld operation. The internal thread of the screw nut is sleeved on the thread section B14 of the middle shaft B1. Therefore, when the screw B3 is stirred by fingers, the screw B3 in the screw frame B2 rotates in situ to realize the axial stable translation of the middle shaft B1.

The bidirectional brake bracket B5 shown in fig. 22 includes a base B50 and a center support plate B59 perpendicular to the base B50, and a center shaft hole is provided at a center position of the center support plate B59. Two side walls of the central shaft hole are provided with key installing holes B58, a guide key B6 is fixedly installed in the key installing holes B58, and the guide key B6 is sleeved in the axial flat sliding groove B11 or the key groove at the same time.

On the base B50 that is located center support board B59 both sides, fixedly connected with circumference is stopped tight hoop B51 and axial and is stopped tight hoop B54 respectively, and circumference is stopped tight hoop B51 and is matchd and cup joint tip B42 behind the framework B4, the axis B1 is cup jointed in the axial is stopped tight hoop B54 matching, and the both sides clamp is including locking end and locking hole respectively, and the downthehole installation clamp locking silk that runs through of locking. When the circumferential braking clamp is locked and the axial braking clamp is loosened, the central shaft can only axially slide along the central shaft hole of the mechanism frame but cannot rotate, when the axial braking clamp is locked and the circumferential braking clamp is loosened, the central shaft can only rotate along the shaft center but cannot axially slide, and when the two braking clamps are all locked, the central shaft and the mechanism frame are fixed into a whole.

In the above embodiments, the three-dimensional adjusting mechanism one and the three-dimensional adjusting mechanism two can also be implemented in a replaceable manner. When the upright post of the three-dimensional adjusting mechanism I or the three-dimensional adjusting mechanism II is fixed, or the upright post I or the upright post II is fixed, the corresponding upright post or upright post can be respectively fixed on the bedstead or the support (carrier), or the corresponding upright post or upright post is fixed into a whole and then fixed on the bedstead or the support by the fixing piece.

Claims

1. A fracture traction reduction device is characterized by comprising an active adjusting mechanism and a passive adjusting mechanism, wherein adjusting ends of the two adjusting mechanisms are respectively and fixedly provided with a first Kirschner wire and a second Kirschner wire, the first Kirschner wire and the second Kirschner wire are respectively fixed at the far end and the near end of a fracture part, the far end and the near end of the fracture part are matched and butted by respectively adjusting the first Kirschner wire and the second Kirschner wire through the active adjusting mechanism and/or the passive adjusting mechanism, the active adjusting mechanism is a traction assembly A, the traction assembly A comprises a first three-dimensional adjusting mechanism, the bottom of the first three-dimensional adjusting mechanism is fixed, and a control tail end of the first three-dimensional adjusting mechanism is fixed with the first Kirschner wire; the passive adjusting mechanism is a traction assembly A, a traction assembly B, a traction assembly C or a traction assembly D, the traction assembly B comprises an upright rod, the upper end of the upright rod is transversely connected with a flat rod, the tail end of the flat rod is provided with an angle adjusting mechanism, and an adjusting part of the tail end angle adjusting mechanism fixes the Kirschner wire II; the traction assembly C comprises an upright rod, the upper end of the upright rod is transversely connected with a flat rod, the tail end of the flat rod is provided with a section of anti-rotation inserted rod, and the traction assembly C is also provided with a strip-shaped Kirschner wire seat, the strip-shaped Kirschner wire seat comprises a transverse insertion hole which can be inserted on the anti-rotation inserted rod in a matching manner, and the strip-shaped Kirschner wire seat is respectively provided with a series of vertical needle holes for sleeving a solid-phase corresponding Kirschner wire II; the traction assembly D comprises a second three-dimensional adjusting mechanism, the bottom of the second three-dimensional adjusting mechanism is fixed, a vertical rod is fixed at the control tail end of the second three-dimensional adjusting mechanism, a flat rod is transversely connected to the upper end of the vertical rod, an anti-rotation insertion rod is arranged at the tail end of the flat rod, a strip-shaped Kirschner wire seat is further arranged, the strip-shaped Kirschner wire seat comprises a transverse insertion hole and can be inserted onto the anti-rotation insertion rod in a matched mode, and a series of vertical needle holes for sleeving solid-phase corresponding Kirschner wires II are formed in the strip-shaped Kirschner wire seat respectively; the three-dimensional rods of the three-dimensional adjusting mechanism I or the three-dimensional adjusting mechanism II are connected through a two-dimensional control mechanism, the two-dimensional control mechanism comprises a middle shaft, a nut frame, a nut, a machine frame, a two-way tightening frame and a guide key, the machine frame comprises a cylindrical central shaft hole for sleeving the middle shaft, the front end part of the machine frame is used for connecting the nut frame, and the rear end part of the machine frame is used for connecting the two-way tightening frame; the middle shaft is a cylindrical rod body, one end of the middle shaft is provided with a threaded section positioned in the nut frame, and the other end of the middle shaft is provided with an axial flat sliding groove or a key groove positioned in the bidirectional tightening frame; the screw rack comprises a connecting shaft cavity and a screw cavity, the connecting shaft cavity is fixedly sleeved at one end of the mechanism rack, a screw is sleeved in the screw cavity, a part of the screw is exposed out of the screw cavity and is convenient to rotate by hand, and the screw is sleeved in a threaded section of the middle shaft; two-way tight frame of stopping includes the base and fixes the tight clamp of circumference of stopping and the tight clamp of axial of base both sides, and the tight clamp matching of circumference of stopping cup joints tip behind the framework, the axis is cup jointed in the tight clamp matching of axial braking, the base set up the matching suit in the guide key of the flat spout of axial or keyway, the tight clamp of circumference of stopping is provided with respectively with the tight clamp of axial braking and can be locked dead locking mechanism, when the tight clamp locking of circumference of stopping and the tight clamp of axial braking unclamps, the axis only can follow the central shaft hole endwise slip of framework and can not rotate, when the tight clamp locking of axial braking and the tight clamp of circumference of stopping unclamp, the center pin can only follow the axle center and rotate and can not endwise slip, when two tight clamps of stopping all lock, then the center pin is fixed as an organic whole with the framework.

2. A fracture traction reduction device is characterized by comprising an active adjusting mechanism and a passive adjusting mechanism, wherein adjusting ends of the two adjusting mechanisms are respectively and fixedly provided with a first Kirschner wire and a second Kirschner wire, the first Kirschner wire and the second Kirschner wire are respectively fixed at the far end and the near end of a fracture part, the far end and the near end of the fracture part are matched and butted by respectively adjusting the first Kirschner wire and the second Kirschner wire through the active adjusting mechanism and/or the passive adjusting mechanism, the active adjusting mechanism is a traction assembly D, the traction assembly D comprises a second three-dimensional adjusting mechanism, the bottom of the second three-dimensional adjusting mechanism is fixed, a vertical rod is fixed at a control tail end of the second three-dimensional adjusting mechanism, a flat rod is transversely connected to the upper end of the vertical rod, a section of an anti-rotation inserting rod is arranged at the tail end of the flat rod, a strip-shaped Kirschner wire seat is further provided with a transverse inserting hole which can be matched and inserted in the anti-rotation inserting rod, and a series of vertical needle holes for sleeving a solid phase corresponding first Kirschner wire are respectively arranged on the strip-shaped Kirschner wire seat; the passive adjusting mechanism is a traction assembly C which comprises an upright rod, the upper end of the upright rod is transversely connected with a flat rod, the tail end of the flat rod is provided with a section of anti-rotation inserted rod, and the passive adjusting mechanism is also provided with a strip-shaped Kirschner wire seat which comprises a transverse inserting hole and can be inserted on the anti-rotation inserted rod in a matching way, and the strip-shaped Kirschner wire seat is respectively provided with a series of vertical needle holes for sleeving a solid phase corresponding Kirschner wire II; the three-dimensional rods of the three-dimensional adjusting mechanism I or the three-dimensional adjusting mechanism II are connected through a two-dimensional control mechanism, the two-dimensional control mechanism comprises a middle shaft, a nut frame, a nut, a machine frame, a two-way tightening frame and a guide key, the machine frame comprises a cylindrical central shaft hole for sleeving the middle shaft, the front end part of the machine frame is used for connecting the nut frame, and the rear end part of the machine frame is used for connecting the two-way tightening frame; the middle shaft is a cylindrical rod body, a threaded section is arranged at one end of the middle shaft and positioned in the nut frame, and an axial flat sliding groove or a key groove is arranged at the other end of the middle shaft and positioned in the bidirectional braking frame; the screw rack comprises a connecting shaft cavity and a screw cavity, the connecting shaft cavity is fixedly sleeved at one end of the mechanism rack, a screw is sleeved in the screw cavity, a part of the screw is exposed out of the screw cavity and is convenient to rotate by hand, and the screw is sleeved in a threaded section of the middle shaft; two-way tight frame of stopping includes the base and fixes the tight clamp of circumference of stopping and the tight clamp of axial of base both sides, and the tight clamp matching of circumference of stopping cup joints tip behind the framework, the axis is cup jointed in the tight clamp matching of axial braking, the base set up the matching suit in the guide key of the flat spout of axial or keyway, the tight clamp of circumference of stopping is provided with respectively with the tight clamp of axial braking and can be locked dead locking mechanism, when the tight clamp locking of circumference of stopping and the tight clamp of axial braking unclamps, the axis only can follow the central shaft hole endwise slip of framework and can not rotate, when the tight clamp locking of axial braking and the tight clamp of circumference of stopping unclamp, the center pin can only follow the axle center and rotate and can not endwise slip, when two tight clamps of stopping all lock, then the center pin is fixed as an organic whole with the framework.

3. The fracture traction reduction device according to claim 1 or 2, wherein the tail end of the traction component A is provided with a tail end angle adjusting mechanism; the angle adjusting mechanism is characterized in that a rotary Kirschner wire seat is arranged at the tail end of a corresponding rod piece, the rotary Kirschner wire seat comprises a rotary body, a rotary cover and a sliding rotary rod, the rotary body and the rotary cover are mutually fastened and fixed, a abdicating clamping hole is formed between the rotary body and the rotary cover along the direction vertical to the axial direction and is matched with the sliding rotary rod, a rotary locking wire or a clamping hoop for locking the sliding rotary rod is arranged on the rotary cover, vertical assembling holes are respectively formed in two ends of the sliding rotary rod and are matched with the Kirschner wire, and the Kirschner wire is locked by the Kirschner wire or the clamping hoop; or, angle adjustment mechanism be provided with at corresponding member end and can the pivoted rotatory ke shi needle holder, rotatory ke shi needle holder is including the suit at corresponding member end and can the pivoted rotator, rotatory lid and slip rotary rod, the mutual lock of rotator and rotatory lid is fixed, it steps down the card hole and matches and install the slip rotary rod to be provided with along perpendicular axial direction between rotator and rotatory lid, be provided with at rotatory lid to the rotation lock wire or the clamp of slip rotary rod locking, the both ends of slip rotary rod are provided with vertical pilot hole respectively and match and install the ke shi needle, lock the locking to the ke shi needle through ke shi needle lock wire or clamp.

4. The traction reduction device for bone fracture according to claim 1 or 2, wherein the circumferential tightening clamp and the axial tightening clamp are both circular and have openings, the openings include two locking ends having a fit gap, the two locking ends have corresponding locking holes, and the locking threads of the clamps are installed in the adjacent locking holes in a penetrating manner.

5. The traction reduction device for bone fracture according to claim 4, wherein the bidirectional braking bracket further comprises a central support plate connected to the base, the circumferential braking clamp and the axial braking clamp are respectively disposed on two sides of the central support plate, and a central shaft hole is disposed in a central position of the central support plate for sleeving the central shaft.

6. The traction reduction device for bone fracture as claimed in claim 5, wherein a key hole is provided on one or both side walls of the central shaft hole, and a guide key is fixedly installed in the key hole and is simultaneously sleeved in the axial flat sliding groove or the key groove.

7. The traction reduction device for bone fracture according to claim 1 or 2, wherein the second three-dimensional adjusting mechanism comprises a first-level member vertical rod, a second-level member horizontal screw rod, a third-level member longitudinal screw rod and a fourth-level member lifting rod, wherein the vertical rod is fixed on the bedstead or the support by a fixing member, the upper end of the vertical rod is connected with the horizontal screw rod through a longitudinal tee seat, the tail end of the horizontal screw rod is connected with the longitudinal screw rod through a transverse tee seat, and the upper end of the vertical screw rod is connected with the lifting rod through a lifting tee seat; the angle adjusting mechanism is positioned at the tail end of the transverse shaft; each tee joint seat comprises a seat body, an axial through hole is formed in the middle of the seat body and used for being sleeved with a lower-level rod piece and being locked, and a radial connecting seat is fixed on the side wall of the seat body and used for being connected with a higher-level rod piece and being locked.

8. The traction reduction device for bone fracture according to claim 7, wherein the inner end of the base body is sleeved with a screwing control cap and can rotate, the screwing control cap is fixed with the inner end of the base body through an axial sliding locking wire or a hoop to prevent axial sliding, the screwing control cap fixes the lower level rod through a rotating locking wire or the hoop to prevent the lower level rod from rotating, or the sidewall of the screwing control cap is provided with an inner end radial insertion hole in a penetrating manner, a rotating control plate is inserted in the inner end radial insertion hole in a penetrating manner, the lower level rod is provided with an axial clamping groove which is radially recessed or penetrates, and the rotating control plate is positioned in the axial clamping groove at the same time.

9. The traction reduction device for bone fracture according to claim 8, wherein the outer end of the base body is fixedly connected with a propulsion device, the propulsion device comprises a nut constraining sleeve connected to the outer side of the base body, a screw outlet is arranged at the center of the outer end wall of the nut constraining sleeve, the end part of the lower level rod piece located in the axial through hole of the base body is provided with an external thread to form a threaded section, the threaded section can be led out from the screw outlet, an adjusting nut is sleeved on the threaded section, and a side hole is arranged on the side surface of the nut constraining sleeve to expose the adjusting nut so as to facilitate the rotation operation of the adjusting nut.