Orthopedic reduction fixator

Abstract

The present invention discloses an orthopedic reduction fixator, comprising two fixing rings sleeved at two ends of a fracture site, wherein symmetrical positions on the outer contours of the two fixing rings are fixedly connected to fixing seats, one of the fixing seats is penetrated and rotatably connected to a spline shaft driven for rotation by a power mechanism, and the other fixing seat is penetrated and rotatably connected to a spline sleeve driven for rotation by the spline shaft, each of the fixing rings is provided with rectangular through grooves at symmetrical positions on both sides, the inner walls of the rectangular through grooves are movably connected to sliders, each of the sliders is fixedly connected to a positioning tube for positioning and inserting a locking needle body, and arc-shaped splints are fixedly connected to the outer contours of the opposite ends of the positioning tubes on both sides of each fixing ring, and the fixing ring is provided with an auxiliary mechanism that drives the arc-shaped splint to fix the fixing ring to the patient's fracture site. The present application has the function of fixing the fixing rings at both ends of the patient's fracture site respectively, thereby reducing the burden on the fracture site.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic reduction and fixation devices, in particular to an orthopedic reduction and fixation device. Background Art

[0002] Fracture is a common orthopedic disease in clinical practice. Especially with the aggravation of population aging and the frequent occurrence of traffic accidents, the number of fracture patients has shown an increasing trend year by year. When fractures are treated surgically, in order to ensure the alignment of the fracture ends and maintain their stability, there are two types of fixation: internal fixation and external fixation. Regardless of whether internal fixation or external fixation is used, it is necessary to perform traction, displacement, rotation and compression on the patient's fracture site, that is, fracture reduction. At present, in the treatment of fracture reduction, a reduction fixator is generally used. The reduction fixator is mainly composed of a telescopic rod, upper and lower rings or frames, a locking pin mechanism and bone pins. The upper and lower rings are connected by a single-ball joint telescopic rod or a double-ball joint telescopic rod, and then the locking pin mechanism and bone pins are installed on the upper and lower rings and the telescopic rod.

[0003] The Chinese patent with the existing publication number CN112244971A comprises two fixing rings, a plurality of adjusting rods are arranged between the two fixing rings, a locking needle mechanism is arranged on the fixing ring, and the locking needle mechanism comprises a locking needle body and two locking needle seats, the two locking needle seats are respectively slidably arranged on the opposite sides of the fixing ring, a needle hole is arranged on the locking needle seat, the locking needle body passes through the needle hole on one of the locking needle seats and extends out of the needle hole on the other locking needle seat, a limiting groove is arranged in an annular direction on the outer circumferential surface of the fixing ring, an alignment seat is slidably arranged in the limiting groove, an alignment hole is arranged at one end of the alignment seat, the alignment hole and the needle hole are at the same horizontal height, an alignment rod is arranged at the other end of the alignment seat, and a socket for inserting the alignment rod is arranged at the end of the locking needle seat away from the needle hole.

[0004] When the above device is in use, the alignment rod is inserted into the socket to fix the position of the alignment seat. At this time, the alignment hole on the alignment seat is located in the extension direction of the line connecting the pinholes on the two locking needle seats. The locking needle body is passed through the alignment hole and inserted into the pinhole of one of the locking needle seats, which improves the accuracy of the locking needle body insertion process, thereby avoiding the displacement of the locking needle body after insertion from the locking needle seat to a certain extent. However, in actual use, since the locking needle body directly penetrates the bone and the fixing ring is in a suspended state, the fixing ring applies a large pressure on the fracture, which is very likely to cause secondary damage to the patient's fracture site, increasing the patient's pain and the difficulty of treatment. Therefore, it is difficult to fix the fixing ring at the two ends of the patient's fracture respectively.

[0005] For this reason, we proposed an orthopedic reduction fixator. Summary of the invention

[0006] The purpose of the present invention is to provide an orthopedic reduction fixator, which has the advantage of fixing the fixing rings at the two ends of the patient's fracture respectively, and solves the problems in the background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an orthopedic reduction fixator, comprising two fixing rings sleeved at both ends of a fracture site, wherein symmetrical positions on the outer contours of the two fixing rings are fixedly connected to fixing seats, one of the fixing seats is penetrated and rotatably connected to a spline shaft driven for rotation by a power mechanism, and the other fixing seat is penetrated and rotatably connected to a spline sleeve driven for rotation by the spline shaft, each of the fixing rings is provided with rectangular through grooves at symmetrical positions on both sides, the inner walls of the rectangular through grooves are movably connected to sliders, each of the sliders is fixedly connected to a positioning tube for positioning and inserting a locking needle body, and the outer contours of the opposite ends of the positioning tubes on both sides of each fixing ring are fixedly connected to arc-shaped splints, the fixing ring is provided with an auxiliary mechanism that drives the arc-shaped splint to fix the fixing ring to the patient's fracture site, and the above-mentioned power mechanism is a motor after power is turned on.

[0008] Preferably, the auxiliary mechanism includes two fixed rings whose inner walls are fixedly connected to circular rings, and each of the circular rings is rotatably connected to a rotating plate on the outer contour of one end away from the fixed ring, and each of the rotating plates is provided with guide grooves at symmetrical positions on both sides for pulling the sliders to move back and forth toward or away from each other, and the two sliders shown at each end are fixedly connected to a movable block on one side close to the rotating plate, and each of the movable blocks is respectively penetrated to the inner wall of the guide groove at the corresponding position at one end away from the slider and is movably connected.

[0009] Preferably, a first arc-shaped tooth plate is fixedly connected at a symmetrical position on the outer contour of the two rotating plates, a second gear is fixedly connected on the outer contour of the spline shaft away from the spline sleeve at one end for meshing transmission with the first arc-shaped tooth plate on the adjacent side, and a first gear is fixedly connected on the outer contour of the spline sleeve for meshing transmission with the first arc-shaped tooth plate on the adjacent side.

[0010] Preferably, fixed blocks are fixedly connected to symmetrical positions on both sides of the fixed ring away from one end of the second gear, sleeve rods are fixedly connected to the fixed blocks on both sides, and threaded sleeves are fixedly connected to one end of the two sleeve rods away from the fixed blocks.

[0011] Preferably, support blocks are fixedly connected to symmetrical positions on both sides of the fixed ring near one end of the second gear, and threaded rods are penetrated and connected to the support blocks on both sides for fixed-axis rotation. The ends of the two threaded rods away from the support blocks are penetrated to the inner walls of the adjacent side sleeve rod and the threaded sleeve and are movably connected, and the threaded sleeve is threadedly connected to the threaded rod.

[0012] Preferably, a second arc-shaped tooth plate is fixedly connected to the outer contour of the rotating plate near one end of the support block at a position symmetrical to the first arc-shaped tooth plate, and the ends of the two threaded rods away from the sleeve rod are fixedly connected to a third gear that meshes with the first arc-shaped tooth plate and the second arc-shaped tooth plate respectively.

[0013] Preferably, the inner wall of each of the arc-shaped splints away from one end of the positioning tube is fixedly connected to an air bag covering the patient's skin, and each of the air bags is penetrated and fixedly connected to a connecting tube.

[0014] Preferably, each of the fixing rings is fixedly connected to a cylindrical shell at positions corresponding to the positioning tubes on both sides, and the positioning tubes respectively penetrate into the inner wall of the cylindrical shell on the adjacent side and are connected for axial movement, and the inner wall of each of the cylindrical shells is movably connected to a piston plate for inflating or deflating the interior of the airbag, and the end of each of the connecting tubes away from the airbag penetrates into the inner wall of the cylindrical shell away from the piston plate and is fixedly connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. As the spline shaft reciprocates with the fixed axis, the second gear and the first gear rotate reciprocally synchronously under the action of the spline shaft and the spline sleeve, and the second gear and the first gear respectively mesh with the first arc-shaped toothed plate at the adjacent end for transmission, so that the first arc-shaped toothed plate can drive the rotating plate to rotate reciprocally on the circular ring synchronously under the action of the second gear and the first gear. When the rotating plate rotates in the direction of C, and the movable block moves in the oblique direction along the guide groove, the movable block can pull the sliders on both sides to move toward each other under the action of the guide groove, and at the same time, the positioning tube drives the arc-shaped splints on both sides to move toward each other and clamp them on the patient's limbs under the action of the slider, then the arc-shaped splint can fix and support the fixing ring on the patient's limb, and as the movable block moves along the guide groove to the arc direction, the movable block can move along the arc direction of the guide groove, so that the movable block can lock the clamping state of the arc-shaped splint, thereby ensuring the stability of the fixing ring, reducing the burden on the fracture site, and avoiding the stress concentration caused by the traditional locking pin body insertion method.

[0017] 2. When the movable block moves to the connection point between the oblique direction and the arc direction of the guide groove, the first arc-shaped tooth plate and the second arc-shaped tooth plate are respectively meshed with the teeth on the third gear on both sides, and the rotating plate rotates in the C direction, so that the third gear drives the threaded rods on both sides to rotate synchronously under the action of the first arc-shaped tooth plate and the second arc-shaped tooth plate. As the threaded sleeve and the threaded rod are screwed together, the threaded sleeve can pull the sleeve rod to move in the direction close to the third gear under the action of the threaded rod. At the same time, the fixing ring at one end away from the third gear moves synchronously under the action of the sleeve rod, and then the positioning tube and the arc splint on the fixing ring drive the bone to move and adjust through the locking pin body, so that the fracture end can be accurately docked and reset, which can ensure that the bone fracture is in the best healing position, avoid dislocation or displacement of the fracture end, contribute to the regeneration and repair of bone tissue, and shorten the healing time of the fracture.

[0018] 3. As the slider drives the positioning tube to move back and forth, the positioning tube can move axially back and forth on the inner wall of the cylindrical shell. Through the piston plate arranged on the cylindrical shell, and the piston plate is fixedly connected to the positioning tube, when the positioning tube drives the arc-shaped clamping plate to move toward each other to clamp the patient's limb, the positioning tube can pull the piston plate to move toward one end close to the connecting tube, and the internal air pressure of the cylindrical shell close to one end of the connecting tube is positive pressure, so that the connecting tube can fill the internal gas of the cylindrical shell into the interior of the airbag, and the airbag expands and covers the skin of the patient's limb, reducing the greater pressure on the patient's skin and soft tissue, especially the sensitive parts of limb edema and fracture, and improving the overall comfort of the patient.

[0019] The coordinated use of the above-mentioned structure solves the problem that in actual use of the existing device, since the locking pin body directly penetrates the bone and the fixing ring is in a suspended state, the fixing ring applies a large pressure on the fracture, which can easily cause secondary damage to the patient's fracture site, increase the patient's pain and difficulty of treatment, and therefore it is difficult to fix the fixing ring at both ends of the patient's fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the slider of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating plate of the present invention;

[0023] Figure 4 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0024] Figure 5 For the present invention Figure 1 Schematic diagram of the structure at B in the middle;

[0025] Figure 6 It is a cross-sectional schematic diagram of the three-dimensional structure of the cylindrical shell of the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the spline shaft of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the threaded rod of the present invention.

[0028] In the figure: 1, fixing ring; 101, rectangular through groove; 2, fixing seat; 3, spline shaft; 4, spline sleeve; 401, first gear; 5, slider; 6, positioning tube; 7, arc-shaped clamping plate; 8, circular ring; 9, rotating plate; 901, guide groove; 10, movable block; 11, second gear; 12, first arc-shaped tooth plate; 13, fixing block; 14, sleeve rod; 15, threaded sleeve; 16, supporting block; 17, threaded rod; 18, second arc-shaped tooth plate; 19, third gear; 20, cylindrical shell; 21, piston plate; 22, connecting pipe; 23, air bag. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0030] See also Figures 1 to 8 The present invention provides a technical solution: an orthopedic reduction fixator, comprising two fixing rings 1 sleeved at both ends of a fracture site, the two fixing rings 1 having symmetrical positions on their outer contours fixedly connected to fixing seats 2, one of the fixing seats 2 being penetrated and rotatably connected to a spline shaft 3 driven to rotate by a power mechanism, the other fixing seat 2 being penetrated and rotatably connected to a spline sleeve 4 driven to rotate by the spline shaft 3, each of the fixing rings 1 having rectangular through grooves 101 at symmetrical positions on both sides, the inner walls of the rectangular through grooves 101 being movably connected to sliders 5, each of the sliders 5 being fixedly connected to a positioning tube 6 for positioning and inserting a locking needle body, the outer contours of the opposite ends of the positioning tubes 6 on both sides of each of the fixing rings 1 being fixedly connected to an arc splint 7, the fixing ring 1 being provided with an auxiliary mechanism driving the arc splint 7 to fix the fixing ring 1 to the patient's fracture site, and the above-mentioned power mechanism being an energized motor.

[0031] The above structure is mainly used for fracture reduction and fixation of upper and lower limbs. The fixator can effectively support and fix the fracture site and prevent displacement or dislocation of the fracture ends. It is especially suitable for the treatment of fractures in complex parts such as long bones and around joints. Its structural design fully considers the anatomical characteristics of the bones of the limbs and can flexibly adjust the fixation angle and pressure to adapt to the individual differences of different patients, ensuring that the fracture site remains stable during the treatment process and promoting bone healing.

[0032] When in use, by setting two fixing rings 1, firstly, the two fixing rings 1 are respectively sleeved on the two ends of the fracture site of the upper limb or lower limb, and the fixing seat 2 is fixedly supported on the fixing ring 1 through the fixing seat 2, and the spline shaft 3 and the spline sleeve 4 are arranged on the fixing seat 2, and the spline shaft 3 is driven to rotate by the motor, so that the motor can drive the spline shaft 3 to perform fixed-axis reciprocating rotation on the fixing seat 2, and the spline shaft 3 penetrates to the inner wall of the spline sleeve 4, so that the spline sleeve 4 can synchronously perform fixed-axis reciprocating rotation along with the spline shaft 3, and through the rectangular through groove 101 opened on the fixing ring 1, The slider 5 arranged on the rectangular through groove 101 can enable the rectangular through groove 101 to support the moving direction of the slider 5. Through the positioning tube 6 arranged on the slider 5, and the positioning tube 6 is fixedly supported on the slider 5, it is convenient for medical staff to position the locking needle body through the inner wall of the positioning tube 6 and insert it into the patient's bone. Through the arc splint 7 arranged on the positioning tube 6 and the auxiliary mechanism arranged on the fixing ring 1, the auxiliary mechanism can drive the arc splints 7 on both sides to move toward each other and clamp and fix them on the patient's limbs, thereby reducing the pressure brought by the fixing ring 1 to the fracture site and further improving the stability of the fixator. Embodiment 2:

[0033] On the basis of the first embodiment, further:

[0034] The auxiliary mechanism includes two fixed rings 1, the inner walls of which are fixedly connected with circular rings 8, and each of the circular rings 8 is rotatably connected with a rotating plate 9 on the outer contour of the end away from the fixed ring 1. Guide grooves 901 for pulling the slider 5 to move back and forth toward or away from each other are provided at symmetrical positions on both sides of each rotating plate 9. The two sliders 5 shown at each end are fixedly connected with a movable block 10 on one side close to the rotating plate 9, and each of the movable blocks 10 is respectively connected to the inner wall of the guide groove 901 at the corresponding position at the end away from the slider 5 and is movably connected.

[0035] A first arc-shaped tooth plate 12 is fixedly connected at a symmetrical position on the outer contour of the two rotating plates 9, a second gear 11 is fixedly connected on the outer contour of the spline shaft 3 away from the spline sleeve 4 for meshing transmission with the first arc-shaped tooth plate 12 on the adjacent side, and a first gear 401 is fixedly connected on the outer contour of the spline sleeve 4 for meshing transmission with the first arc-shaped tooth plate 12 on the adjacent side.

[0036] When in use, the circular ring 8 is provided on the fixed ring 1, and the rotating plate 9 is provided on the circular ring 8, so that the circular ring 8 can fix and support the rotating plate 9 on the inner wall of the fixed ring 1, and the rotating plate 9 is rotatably connected on the outer contour of the circular ring 8, and the movable block 10 is provided on the slider 5, and the movable block 10 is connected to the inner wall of the guide groove 901, so that the movable block 10 can support the position of the slider 5 under the action of the guide groove 901, and the first arc tooth plate 12 is provided on the rotating plate 9, and the two first arc tooth plates 12 are respectively fixed The fixed support is on the outer contour of the fixed ring 1 at both ends, and the second gear 11 set on the spline shaft 3 and the first gear 401 set on the spline sleeve 4 perform fixed-axis reciprocating rotation along with the spline shaft 3, so that the second gear 11 and the first gear 401 reciprocate synchronously under the action of the spline shaft 3 and the spline sleeve 4, and the second gear 11 and the first gear 401 are respectively meshed with the first arcuate tooth plate 12 at the adjacent end for transmission, so that the first arcuate tooth plate 12 can drive the rotating plate 9 to reciprocate synchronously on the ring 8 under the action of the second gear 11 and the first gear 401.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, when the rotating plate 9 rotates in the direction of C, and the movable block 10 moves in the oblique direction along the guide groove 901, the movable block 10 can pull the sliders 5 on both sides to move toward each other under the action of the guide groove 901, and at the same time, the positioning tube 6 drives the arc-shaped splints 7 on both sides to move toward each other and clamped on the patient's limbs under the action of the slider 5, then the arc-shaped splint 7 can fix and support the fixing ring 1 on the patient's limb, and when the movable block 10 moves to the arc direction along the guide groove 901, the movable block 10 can move along the arc direction of the guide groove 901, and the movable block 10 can lock the clamping state of the arc-shaped splint 7, thereby ensuring the stability of the fixing ring 1, reducing the burden on the fracture site, and avoiding the stress concentration caused by the traditional locking needle body insertion method.

[0038] With the arc-shaped splint 7 clamped on the patient's limb, the medical staff will insert the locking needle body into the patient's bone through the inner wall of the positioning tube 6, which improves the stability of the insertion process and avoids the problem of deviation of the locking needle body during insertion, which may cause secondary injury to the patient.

[0039] When the rotating plate 9 is reset and rotated in the direction opposite to C, the above structure is reset and moved in the opposite direction simultaneously, so that the arc-shaped clamping plate 7 can move back to the contact clamping state, so that the subsequent medical staff can remove the fixator. Embodiment three:

[0040] On the basis of the second embodiment, further:

[0041] Fixed blocks 13 are fixedly connected to symmetrical positions on both sides of the fixed ring 1 away from one end of the second gear 11, sleeve rods 14 are fixedly connected to the fixed blocks 13 on both sides, and threaded sleeves 15 are fixedly connected to one end of the two sleeve rods 14 away from the fixed block 13.

[0042] Support blocks 16 are fixedly connected to the symmetrical positions on both sides of the fixed ring 1 near one end of the second gear 11, and threaded rods 17 are penetrated and connected to the support blocks 16 on both sides for fixed axis rotation. The ends of the two threaded rods 17 away from the support blocks 16 are penetrated to the inner walls of the adjacent sleeve rod 14 and the threaded sleeve 15 and are movably connected, and the threaded sleeve 15 is threadedly connected to the threaded rod 17.

[0043] When in use, the fixing block 13 provided on the fixing ring 1 is fixedly supported on the fixing ring 1, and the sleeve rod 14 provided on the fixing block 13 fixes and supports the sleeve rod 14 on the fixing block 13, and the threaded sleeve 15 provided on the sleeve rod 14 makes the threaded sleeve 15 fixedly supported on the sleeve rod 14 and communicated with the inner wall of the sleeve rod 14, and the support block 16 provided on the fixing ring 1 and the threaded rod 17 provided on the support block 16 can make the support block 16 fix and support the threaded rod 17 on the fixing ring 1, and at the same time, the threaded rod 17 is connected to the support block 16 for fixed-axis rotation, and the threaded rod 17 passes through the inner walls of the sleeve rod 14 and the threaded sleeve 15, and the threaded rod 17 is screwed to the threaded sleeve 15, so as to facilitate the subsequent movement and reduction of the patient's fracture site.

[0044] A second arc-shaped toothed plate 18 is fixedly connected to the outer contour of the rotating plate 9 near one end of the support block 16 at a position symmetrical to the first arc-shaped toothed plate 12, and a third gear 19 is fixedly connected to one end of the two threaded rods 17 away from the sleeve rod 14 for meshing transmission with the first arc-shaped toothed plate 12 and the second arc-shaped toothed plate 18 respectively.

[0045] When in use, by means of the second arc-shaped toothed plate 18 provided on the rotating plate 9, the second arc-shaped toothed plate 18 is placed symmetrically with the first arc-shaped toothed plate 12, and by means of the third gear 19 provided on the threaded rod 17, the third gear 19 can be meshed with the first arc-shaped toothed plate 12 and the second arc-shaped toothed plate 18 for transmission respectively. When the movable block 10 moves to the connection point between the oblique direction and the arc-shaped direction of the guide groove 901, the first arc-shaped toothed plate 12 and the second arc-shaped toothed plate 18 are respectively meshed with the teeth on the third gear 19 on both sides, and the rotating plate 9 rotates in the direction C, so that the third gear 19 is meshed with the first arc-shaped toothed plate 12 and the second arc-shaped toothed plate 18. Under the action, the threaded rods 17 on both sides are driven to rotate synchronously with a fixed axis, and along with the threaded sleeve 15 and the threaded rod 17 are screwed together, the threaded sleeve 15 can pull the sleeve rod 14 to move towards the direction close to the third gear 19 under the action of the threaded rod 17. At the same time, the fixing ring 1 at one end away from the third gear 19 is moved synchronously under the action of the sleeve rod 14, and then the positioning tube 6 and the arc splint 7 on the fixing ring 1 drive the bone to move and adjust through the locking pin body, so that the fracture end can be accurately docked and reset, which can ensure that the bone fracture is in the best healing position, avoid dislocation or displacement of the fracture end, contribute to the regeneration and repair of bone tissue, and shorten the healing time of the fracture. Embodiment 4:

[0046] On the basis of the third embodiment, further:

[0047] An inner wall of one end of each arc-shaped splint 7 away from the positioning tube 6 is fixedly connected to an air bag 23 covering the patient's skin, and a connecting tube 22 penetrates and is fixedly connected to each air bag 23 .

[0048] A cylindrical shell 20 is fixedly connected to the positions corresponding to the positioning tubes 6 on both sides of each of the fixing rings 1, and the positioning tubes 6 respectively penetrate the inner wall of the cylindrical shell 20 on the adjacent side and are axially movable and connected. The inner wall of each of the cylindrical shells 20 is movably connected to a piston plate 21 for inflating or exhausting the inside of the airbag 23, and the end of each of the connecting tubes 22 away from the airbag 23 penetrates the inner wall of the cylindrical shell 20 away from the piston plate 21 and is fixedly connected.

[0049] When using, Figure 1 , Figure 2 and Figure 6As shown, through the airbag 23 provided on the arc splint 7, the airbag 23 can be covered on the skin of the patient's limbs, and through the connecting tube 22 provided on the airbag 23, the connecting tube 22 is connected with the airbag 23, so as to facilitate the subsequent inflation and degassing of the inside of the airbag 23. Through the cylindrical shell 20 provided on the fixing ring 1, the cylindrical shell 20 is fixedly supported on the fixing ring 1, and at the same time, the connecting tube 22 can connect the cylindrical shell 20 with the inner wall of the airbag 23, and the positioning tube 6 passes through the inner wall of the cylindrical shell 20 and is movably connected. With the slider 5 driving the positioning tube 6 to reciprocate, the positioning tube 6 can axially reciprocate on the inner wall of the cylindrical shell 20. Movement is achieved through a piston plate 21 provided on the cylindrical shell 20, and the piston plate 21 is fixedly connected to the positioning tube 6. When the positioning tube 6 drives the arc-shaped clamping plate 7 to move toward each other to clamp the patient's limbs, the positioning tube 6 can pull the piston plate 21 to move toward one end close to the connecting tube 22, and the internal air pressure of the cylindrical shell 20 close to one end of the connecting tube 22 is positive pressure, so that the connecting tube 22 can fill the internal gas of the cylindrical shell 20 into the interior of the airbag 23, and the airbag 23 expands and covers the skin of the patient's limbs, reducing the greater sense of pressure on the patient's skin and soft tissues, especially the sensitive parts of limb edema and fractures, thereby improving the overall comfort of the patient.

[0050] Furthermore, in actual use of the existing device, the fixing rings are respectively fixed at the two ends of the fracture of the patient, which reduces the burden on the fracture site and is easy to use, which is better than traditional products.

[0051] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthopedic reduction fixator, characterized in that: It comprises two fixing rings sleeved at both ends of the fracture site, and the symmetrical positions on the outer contours of the two fixing rings are fixedly connected with fixing seats, one of the fixing seats is penetrated and fixedly rotatably connected with a spline shaft driven to rotate by a motor, and the other fixing seat is penetrated and rotatably connected with a spline sleeve driven to rotate by the spline shaft, and rectangular through grooves are opened at symmetrical positions on both sides of each fixing ring; The inner wall of the rectangular through groove is movably connected with a slider, each of which is fixedly connected with a positioning tube for positioning and inserting the locking needle body, and the outer contour of the opposite ends of the positioning tubes on both sides of each fixing ring is fixedly connected with an arc-shaped splint, and the fixing ring is provided with an auxiliary mechanism that drives the arc-shaped splint to fix the fixing ring on the patient's fracture; The auxiliary mechanism comprises two inner walls of the two fixed rings, both of which are fixedly connected to circular rings; a rotating plate is rotatably connected to the outer contour of each circular ring at one end away from the fixed ring; guide grooves for pulling the slider to move back and forth toward or away from each other are provided at symmetrical positions on both sides of each rotating plate; a movable block is fixedly connected to the side of each slider close to the rotating plate; and each movable block is respectively penetrated to the inner wall of the guide groove at the corresponding position at one end away from the slider and is movably connected thereto; The guide groove includes an oblique direction and an arc direction; When the movable block moves along the oblique direction of the guide groove, it can pull the sliders on both sides to move toward each other. When the movable block moves to the arc direction along the guide groove, the movable block can move along the arc direction of the guide groove, and the movable block can lock the clamping state of the arc clamping plate.

2. An orthopedic reduction fixator according to claim 1, characterized in that: The gears are connected to each other with a toothed wheel which is located close to the toothed wheel hub, and the toothed wheel is connected to a gearbox which is configured to engage with the toothed wheel hub, and the toothed wheel is connected to a gearbox which is configured to engage with the toothed wheel hub.

3. An orthopedic reduction fixator according to claim 2, characterized in that: A second arc-shaped tooth plate is fixedly connected to the outer contour of the rotating plate close to one end of the supporting block at a position symmetrical to the first arc-shaped tooth plate.

4. The orthopedic reduction fixator according to claim 3, characterized in that: One end of the two threaded rods away from the sleeve rod is fixedly connected to a third gear which is respectively meshed with the first arc-shaped toothed plate and the second arc-shaped toothed plate for transmission.

5. The orthopedic reduction fixator according to claim 4, characterized in that: The inner wall of each arc-shaped splint away from one end of the positioning tube is fixedly connected to an air bag covering the patient's skin, and each air bag is penetrated and fixedly connected to a connecting tube.

6. The orthopedic reduction fixator according to claim 5, characterized in that: A cylindrical shell is fixedly connected to the positions corresponding to the positioning tubes on both sides of each fixing ring, and the positioning tubes respectively penetrate the inner wall of the cylindrical shell on one adjacent side and are axially movably connected thereto.

7. The orthopedic reduction fixator according to claim 6, characterized in that: The inner wall of each cylindrical shell is movably connected with a piston plate for inflating or deflating the airbag, and the end of each connecting tube away from the airbag passes through the inner wall of the cylindrical shell away from the piston plate and is fixedly connected.

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