Fracture reduction device

Abstract

The invention relates to the technical field of medical instruments, and discloses a fracture reduction device which comprises a base, an adjusting ring, an arc-shaped sliding seat, an up-down sliding seat, a first needle clamping device, a fixing assembly, a first adjusting assembly, a second adjusting assembly, a third adjusting assembly and a connecting assembly. A supporting seat is arranged at the far end of the base, the adjusting rings are detachably arranged on the base through the fixing assembly, the multiple adjusting rings are arranged at intervals, and the first adjusting assembly can control the adjusting rings to reciprocate in the length direction of the base; the second adjusting assembly can control the arc-shaped sliding seat to slide on the adjusting ring in a reciprocating mode. The third adjusting assembly can control the up-down sliding base to move up and down. The first needle clamping device is arranged on the up-down sliding seat; after fracture reduction is completed, the connecting assembly can be fixedly connected with all the adjusting rings; according to the invention, the problems of inaccurate mastering of manual moving force and difficulty in fine adjustment can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a bone fracture reduction device. BACKGROUND

[0002] Bone fracture reduction is a key step in orthopedic surgery. Currently, in bone fracture reduction, especially leg fracture, the three-dimensional impression of the fracture site is formed with the help of image data and the doctor's exploration of the injury site, and then corrected through internal fixation devices or external fixation devices.

[0003] Among them, the internal fixation device needs to be embedded with titanium alloy steel plate through surgical incision to assist in the correction and fixation of the fracture site. However, this method not only has high cost, but also needs to be taken out through secondary surgery, which is troublesome and painful for patients.

[0004] In addition to traditional plaster, the external fixation device currently has external supports, such as the adjustable bone fracture reduction device disclosed in patent CN111743613B. The user can rotate the rotating nut to loosen the connection between the first pin clamping device and the needle seat sliding groove, and manually move the first pin clamping device to the fixed position, so that the first pin clamping device moves in the needle seat sliding groove, facilitating the adjustment of the insertion position of the needle. The connecting plate is vertically arranged in the middle of the semi-arc plate, which facilitates the user to adjust the angle of the first pin clamping device in sequence according to the position of the connecting plate. Through the above device, the position of the first pin clamping device can be adjusted by the first pin clamping device to move the needle inserted into the bone, thereby pulling the misaligned bone ends. However, the manual moving method is not accurate enough in force control, and it is difficult to make fine adjustments. At the same time, after moving, the muscle will generate a force on the needle due to the displacement caused by the traction, so the user still needs to rotate the nut to lock the first pin clamping device while manually maintaining the first pin clamping device. In this process, the first pin clamping device may still move, affecting the bone fracture reduction result. SUMMARY

[0005] In order to improve the accuracy of bone fracture reduction, the present application provides a bone fracture reduction device.

[0006] The present application provides a bone fracture reduction device, which adopts the following technical scheme: A bone fracture reduction device, comprising a base, an adjusting ring, an arc-shaped sliding seat, an upper and lower sliding seat, a first pin clamping device, a fixing assembly, a first adjusting assembly, a second adjusting assembly, a third adjusting assembly and a connecting assembly; The distal end of the base is provided with a support seat for placing the patient's foot, the adjusting ring is detachably arranged on the base through the fixing assembly, a plurality of adjusting rings are arranged along the length direction of the base, and the first adjusting assembly can control the adjusting ring to reciprocate along the length direction of the base. The arc-shaped sliding seat is arranged on the upper end of the adjusting ring, the second adjusting assembly can control the arc-shaped sliding seat to reciprocally slide on the adjusting ring, the upper and lower sliding seats are arranged on the arc-shaped sliding seat to slide up and down, the third adjusting assembly can control the upper and lower sliding seats to move up and down, and the first clamping needle device is arranged on the upper and lower sliding seats. The second adjusting assembly comprises a gear, a rack and a control handle, the adjusting ring is provided with a ring groove, the rack is arranged on the inner end side wall of the ring groove, the gear is rotationally arranged on the arc-shaped sliding seat and located in the ring groove, the gear is engaged with the rack, and the control handle is arranged on the side of the arc-shaped sliding seat away from the adjusting ring and coaxially connected with the gear. When the fracture reduction is completed, the connecting assembly can fixedly connect all the adjusting rings.

[0007] By adopting the above technical scheme, the support seat can place the patient's feet, and the height of the patient's feet can be adjusted by adjusting the support seat; the plurality of adjusting rings can be detachably arranged on the base and reciprocally moved along the length direction of the base, so as to adapt to different patients, different injured positions and different injured conditions; the arc-shaped sliding seat can reciprocally slide on the adjusting ring, the upper and lower sliding seats can move up and down on the arc-shaped sliding seat, the first clamping needle device is arranged on the upper and lower sliding seats, the position of the first clamping needle device can be adjusted in multiple dimensions, and the fracture part can be accurately reduced; the second adjusting assembly is engaged with the gear and the rack, the arc-shaped sliding seat can be controlled to move by the control handle, the movement of the needle part can be accurately controlled, the gear and the rack can be matched to achieve a certain limiting self-locking effect, the movement of the needle part after the reduction is completed is reduced, and thus the reduction progress is improved; the connecting assembly can fixedly connect all the adjusting rings after the fracture reduction is completed, so that the adjusting ring can continue to follow the patient after the reduction is completed, and the reduction effect is ensured.

[0008] Optionally, a ring guide rail is arranged between the arc-shaped sliding seat and the adjusting ring, the reduction device further comprises a limiting assembly for limiting the movement of the arc-shaped sliding seat, the limiting assembly comprises a linkage ring, a linkage rod and a limiting bolt, the linkage ring is rotationally arranged on the adjusting ring, the arc-shaped sliding seat and the linkage ring are connected through the linkage rod, a plurality of threaded holes are arranged on the linkage ring in the circumferential direction, a plurality of waist-shaped holes are arranged on the outer wall of the adjusting ring in the circumferential direction, and the limiting bolt can pass through the waist-shaped hole and be threadedly connected with the threaded hole on the linkage ring.

[0009] By adopting the technical scheme, the circumferential guide rail enables the arc-shaped sliding seat to stably slide on the adjusting ring, the limiting assembly can limit the movement of the arc-shaped sliding seat, the connecting ring is connected with the arc-shaped sliding seat through the connecting rod, the connecting ring is fixed through the limiting bolt threaded connection with the threaded hole, so that the arc-shaped sliding seat is fixed at a specific position on the adjusting ring, the stability of the device adjustment is improved, and the fracture reduction effect is ensured.

[0010] Optionally, the lower end of the adjusting ring is further provided with a synchronous sliding seat; the synchronous sliding seat is symmetrically arranged with the arc-shaped sliding seat, and the synchronous sliding seat is fixedly connected with the connecting ring; the synchronous sliding seat is provided with a second needle clamping device, and the needle member can pass through the first needle clamping device and the second needle clamping device in sequence.

[0011] By adopting the technical scheme, the lower end of the adjusting ring is provided with the synchronous sliding seat, which is symmetrically arranged with the arc-shaped sliding seat and fixedly connected with the connecting ring; the second needle clamping device is arranged on the synchronous sliding seat, and the needle member can pass through the first needle clamping device and the second needle clamping device in sequence, so that the needle member can be fixed and adjusted from the upper and lower sides at the same time, the stability of the needle member fixing is improved, the traction on the bone end during the fracture reduction process is more stable and accurate, and the fracture reduction effect is improved.

[0012] Optionally, the adjusting ring is provided with a scale in the circumferential direction.

[0013] By adopting the technical scheme, when the position of the arc-shaped sliding seat is adjusted, the scale on the adjusting ring can be used for accurate adjustment, and the accuracy of the fracture reduction operation is improved.

[0014] Optionally, the upper and lower sliding seats are provided with limiting blocks, the arc-shaped sliding seat is radially provided with a limiting groove for sliding of the limiting blocks, and the third adjusting assembly comprises a third screw rod rotationally arranged on the arc-shaped sliding seat and a rotating handle connected to the end of the third screw rod, and the third screw rod is threaded through the limiting blocks.

[0015] By adopting the technical scheme, in the fracture reduction device, the limiting blocks on the upper and lower sliding seats slide in the limiting groove of the arc-shaped sliding seat, so that the upper and lower sliding seats can stably move along the adjusting ring in the radial direction; the third screw rod is driven to rotate by rotating the rotating handle, so that the up-and-down movement of the upper and lower sliding seats can be accurately controlled, the height position of the first needle clamping device can be adjusted, and different fracture reduction requirements can be met.

[0016] Optionally, the base is provided with mounting side plates on both sides, the mounting side plates are provided with mounting seats on the side facing the adjusting ring, the adjusting ring can be detachably fixed on the mounting seats, the mounting seats are provided with guide blocks and adjusting blocks at intervals, two slide grooves are formed in the mounting side plates along the length direction and used for sliding of the guide blocks and the adjusting blocks respectively, and the first adjusting assembly comprises a guide rod, a first screw rod and a power source. The mounting seats are arranged at intervals along the length direction of the mounting side plate, the guide rod is arranged on the mounting side plate and sequentially slides through all the guide blocks, the adjusting blocks on all the mounting seats are arranged in staggered manner along the vertical direction, the first screw rod is arranged corresponding to the adjusting blocks, the first screw rod is rotationally arranged on the mounting side plate and threadedly passes through the corresponding adjusting blocks, and the power source is connected with the first screw rod one by one and can drive the first screw rod to rotate.

[0017] By adopting the above technical scheme, the adjusting ring can be detachably fixed on the mounting seat, which is convenient for installation and disassembly; the guide blocks and the adjusting blocks on the mounting seat slide in the sliding grooves of the mounting side plate respectively, the guide rod sequentially passes through the guide blocks, and the movement of the adjusting ring is guided; the power source drives the first screw rod to rotate, the first screw rod is threadedly matched with the adjusting block, the movement of the adjusting ring along the length direction of the base can be accurately controlled, the problem that the manual movement strength is not accurately grasped and fine adjustment is difficult to be realized is avoided.

[0018] Optionally, the mounting seat is provided with a mounting block on the side away from the mounting side plate, the adjusting ring is provided with a matching block on the left and right sides, a matching groove for inserting the matching block is formed on the upper surface of the mounting block, the fixing assembly comprises a plug rod, a spring and a stop block, the plug rod is slidingly arranged on the mounting block, one end of the plug rod extends into the matching groove, an inclined surface is formed on the upper surface of the part of the plug rod extending into the matching groove, the other end of the plug rod penetrates out of the mounting block and is connected with the stop block, and the spring is arranged between the side wall of the mounting block and the stop block; a through hole is formed on the matching block for the plug rod to pass through, and the spring is in a stretched state when the plug rod is inserted into the matching groove.

[0019] By adopting the above technical scheme, the fixing assembly composed of the plug rod, the spring and the stop block is used in cooperation with the matching groove on the mounting block and the matching block of the adjusting ring, so that the detachable fixing of the adjusting ring on the mounting seat can be realized, and the installation and disassembly of the adjusting ring are facilitated.

[0020] Optionally, the connecting assembly comprises a plurality of connecting screw rods and a plurality of positioning nuts, the part of the matching block outside the matching groove is provided with a connecting hole, the connecting screw rod can pass through all the connecting holes on the adjusting rings, and the positioning nuts are symmetrically arranged on the two sides of the matching block to lock the matching block, and the connecting screw rod can also sequentially pass through the through holes on all the matching blocks.

[0021] By adopting the above technical scheme, after the fracture reduction is completed, the connecting screw rod passes through all the connecting holes on the adjusting rings and the through holes on the matching blocks, and the positioning nuts are symmetrically locked on the two sides of the matching block, so that all the adjusting rings can be fixed and connected, the stability of the reduction device after the reduction is completed is ensured, and the movement of the adjusting ring affecting the fracture reduction effect is prevented. Optionally, the support seat is arranged on the base and is movable up and down, the upper surface of the support seat is arranged with a placing groove in a downward bending manner, and the upper surface of the support seat is arranged with a flexible pad.

[0022] By adopting the technical scheme, the support seat is movable up and down to adapt to the leg height requirements of different patients and improve the use flexibility; the placing groove can better fit the feet of the patients and improve the placing stability; and the flexible pad can improve the comfort of the feet of the patients.

[0023] To sum up, the present application has at least one of the following beneficial effects: 1. The movement of the adjusting ring, the arc-shaped sliding seat and the up-and-down sliding seat can be accurately controlled through the first adjusting assembly, the second adjusting assembly and the third adjusting assembly, so that the problem of inaccurate manual movement and difficult fine adjustment can be avoided. 2. When the fracture reduction is completed, the connecting assembly can fixedly connect all the adjusting rings to prevent the muscle traction from causing displacement and affecting the needle, so that the movement of the device is prevented and the fracture reduction result is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of an embodiment of the present application; Figure 2 is a structural schematic diagram of a support seat; Figure 3 is a structural schematic diagram of a first adjusting assembly; Figure 4 is a sectional structural schematic diagram of an embodiment of the present application; Figure 5 is an exploded structural schematic diagram of an embodiment of the present application; Figure 6 is an exploded structural schematic diagram of a fixing assembly; Marked with reference numerals: 1, base; 11, support seat; 111, placing groove; 112, flexible pad; 12, mounting side plate; 13, mounting seat; 131, guide block; 132, adjusting block; 133, mounting block; 2, adjusting ring; 21, arc-shaped sliding seat; 22, up-and-down sliding seat; 23, first needle clamping device; 24, waist-shaped hole; 25, synchronous sliding seat; 251, second needle clamping device; 26, matching block; 261, through hole; 262, connecting hole; 3, fixing assembly; 31, insertion rod; 32, spring; 33, stop block; 4, first adjusting assembly; 41, guide rod; 42, first screw rod; 43, power source; 5, second adjusting assembly; 51, gear; 52, rack; 53, control handle; 6, third adjusting assembly; 61, third screw rod; 62, rotating handle; 7, connecting assembly; 71, connecting screw rod; 72, positioning nut; 8, limiting assembly; 81, linkage ring; 811, threaded hole; 82, linkage rod; 83, limiting bolt. DETAILED DESCRIPTION

[0025] The following description will be made in conjunction with the accompanying drawings Figures 1-6 The application is described in further detail.

[0026] The application discloses a fracture reduction device. Referring to Figure 1 The fracture reduction device comprises a base 1, an adjusting ring 2, an arc-shaped sliding seat 21, an up-down sliding seat 22, a first pin clamping device 23, a fixing assembly 3, a first adjusting assembly 4, a second adjusting assembly 5, a third adjusting assembly 6 and a connecting assembly 7.

[0027] Referring to Figure 1 and Figure 2 The base 1 is used as a basic support component of the whole device and is usually made of a metal material with high strength and good stability, for example, stainless steel. The base 1 can be in the shape of a long strip so as to be placed on an operating table. The base 1 is provided with a support seat 11 for placing a patient's foot at a distal end, i.e., a distal end away from the heart of the human body. The support seat 11 is movably arranged on the base 1 in the up-down direction so as to drive the leg to move up and down and adjust the height position of the leg. The upper surface of the support seat 11 is downwardly curved and provided with a placing groove 111 so as to better fit the patient's foot. The upper surface of the support seat 11 is provided with a flexible pad 112 which can be made of a flexible material such as rubber and can improve the comfort of the patient's foot.

[0028] Optionally, the driving mode of the up-down sliding of the support seat 11 can be that an electric push rod is arranged on the base 1 and the base 1 is directly driven to move up and down by the extension shaft of the electric push rod. Alternatively, a screw rod can be arranged, for example, by arranging a rectangular block on both sides of the support seat 11, meanwhile, a rectangular groove for the up-down sliding of the rectangular block is formed on the base 1, and the screw rod is threaded through one of the rectangular blocks, so that the support seat 11 can be driven to move up and down by rotating the screw rod.

[0029] Referring to Figure 1 and Figure 2 In the embodiment of the application, mounting side plates 12 are arranged on both sides of the base 1, the two mounting side plates 12 are arranged perpendicularly to the base 1, the adjusting ring 2 is detachably arranged between the two mounting side plates 12 through the fixing assembly 3, and a plurality of adjusting rings 2 are arranged along the length direction of the base 1 at intervals. When the leg is reduced, the patient's leg needs to be sequentially inserted through all the adjusting rings 2, and then the foot is placed on the support seat 11. At this time, the height of the support seat 11 is adjusted, the up-down position of the patient's leg is adjusted, and the patient's leg is located at the center position of the adjusting ring 2 as much as possible.

[0030] Referring to Figure 1 and Figure 3In the embodiment of the present application, the first adjusting assembly 4 can control the reciprocating movement of the adjusting ring 2 along the length direction of the base 1; the arc-shaped sliding seat 21 is arranged on the upper end of the adjusting ring 2, and the second adjusting assembly 5 can control the reciprocating sliding of the arc-shaped sliding seat 21 on the adjusting ring 2; the up-and-down sliding seat 22 is arranged on the arc-shaped sliding seat 21 in a sliding manner, the third adjusting assembly 6 can control the up-and-down movement of the up-and-down sliding seat 22; the first clamping needle device 23 is arranged on the up-and-down sliding seat 22; after the fracture reduction is completed, the connecting assembly 7 can fixedly connect all the adjusting rings 2. Such arrangement can flexibly adjust each part according to the actual situation during the fracture reduction process, and the adjusting ring 2 is fixed after the reduction is completed, so as to ensure the stability of the reduction effect.

[0031] With reference to Figure 3 and Figure 4 Specifically, the adjusting ring 2 provides a basis for the installation and movement of the arc-shaped sliding seat 21 and other components. The adjusting ring 2 is usually made of light and strong material, such as aluminum alloy. The arc-shaped sliding seat 21 slides on the upper end of the adjusting ring 2, and a ring-shaped guide rail is arranged between the arc-shaped sliding seat 21 and the adjusting ring 2. A guide groove can be formed on the outer and inner side walls of the adjusting ring 2 along the radial direction of the adjusting ring 2, and the guide groove is formed along the extension direction of the side wall of the adjusting ring 2. The arc-shaped sliding seat 21 is also radially arranged along the adjusting ring 2, that is, the arc-shaped connecting blocks are symmetrically arranged on the upper and lower ends of the arc-shaped sliding seat 21, respectively, and the two connecting blocks are clamped into the two guide grooves, so as to slidably connect the arc-shaped sliding seat 21 to the adjusting ring 2. Alternatively, the two connecting blocks can be replaced by pulleys to reduce friction and facilitate the movement of the arc-shaped sliding seat 21.

[0032] With reference to Figure 4 and Figure 5 In the embodiment of the present application, the second adjusting assembly 5 is used to control the ring-shaped movement of the arc-shaped sliding seat 21 on the adjusting ring 2, so as to drive the first clamping needle device 23 to move in a ring-shaped manner through the arc-shaped sliding seat 21, to adjust the position of the needle, and to drive the bone to move in a ring-shaped manner. The second adjusting assembly 5 includes a gear 51, a rack 52 and a control handle 53, and a ring groove is formed on the adjusting ring 2; the arc-shaped sliding groove can be arranged on the side of the adjusting ring 2 close to the heart of the human body, that is, on the side facing the proximal end, and the ring groove is formed on the side facing the arc-shaped sliding seat 21. The rack 52 is arranged on the inner end side wall of the adjusting ring 2, the gear 51 is rotatably arranged on the arc-shaped sliding seat 21 and located in the ring groove by means of bearings, the gear 51 is engaged with the rack 52, and the control handle 53 is rotatably arranged on the side of the arc-shaped sliding seat 21 away from the adjusting ring 2, and the control handle 53 is coaxially connected with the gear 51. By rotating the control handle 53, the gear 51 can be rotated. Due to the engagement between the gear 51 and the rack 52 and the cooperation of the ring-shaped guide rail, the gear 51 moves along the extension direction of the rack 52, so as to drive the arc-shaped sliding seat 21 to move on the adjusting ring 2.

[0033] Referring to Figure 4 and Figure 5 In the embodiment, the reset device further comprises a limiting assembly 8 for limiting the movement of the arc-shaped sliding seat 21. After the gear 51 is rotated to drive the needle to adjust the position of the bone, the muscle is pulled to exert a reverse force on the needle. Therefore, although the cooperation of the gear 51 and the rack 52 can limit the movement, the needle is still needed to keep the bone still after the reset of the bone fracture, and thus the limiting assembly 8 is needed to further improve the stability of the arc-shaped sliding seat 21. Meanwhile, the arc-shaped sliding seat 21 can be prevented from being displaced due to the accidental touch of the control handle 53.

[0034] Specifically, the limiting assembly 8 comprises a connecting ring 81, a connecting rod 82 and a limiting bolt 83. The connecting ring 81 is circumferentially arranged on the adjusting ring 2. The adjusting ring 2 is provided with a groove for accommodating the connecting ring 81 and allowing the connecting ring 81 to rotate circumferentially. The connecting ring 81 is connected to the arc-shaped adjusting seat through the connecting rod 82. The connecting rod 82 is fixed to the connecting ring 81 and the arc-shaped sliding seat 21 at both ends by welding. Alternatively, the connecting rod 82 can be fixed by a detachable manner, for example, the connecting rod 82 is inserted through the arc-shaped sliding seat 21 and then is detachably fixed to the connecting ring 81 by screwing, clamping or other means. The adjusting ring 2 is provided with a groove for allowing the connecting rod 82 to rotate. Thus, when the gear 51 is rotated, the connecting ring 81 can be moved synchronously. The limiting bolt 83 is used to limit the movement of the connecting ring 81, thereby limiting the rotation of the gear 51, so as to fix the arc-shaped sliding seat 21.

[0035] Specifically, a plurality of threaded holes 811 are arranged on the gear ring, and a plurality of waist-shaped holes 24 are circumferentially and spaced apart on the outer wall of the adjusting ring 2. The number of the waist-shaped holes 24 is not limited, for example, four or six. The limiting bolt 83 is arranged in one-to-one correspondence with the waist-shaped holes 24. It is necessary to arrange the density and spacing of the threaded holes 811 so that, when the connecting ring 81 is rotated, there is always a threaded hole 811 located in the waist-shaped hole 24, and the limiting bolt 83 can pass through the waist-shaped hole 24 and be screwed with the threaded hole 811 on the gear ring. A gasket can be arranged on the limiting bolt 83. When it is necessary to fix the arc-shaped sliding seat 21, the limiting bolt 83 is tightened to fix the connecting ring 81 relative to the adjusting ring 2, thereby limiting the movement of the arc-shaped sliding seat 21.

[0036] Further, the lower end of the adjusting ring 2 is also provided with a synchronous sliding seat 25, which is symmetrically arranged with the arc-shaped sliding seat 21 and is fixedly connected with the connecting ring 81. Specifically, the synchronous sliding seat 25 and the connecting ring 81 can also be fixed through the connecting rod 82. The synchronous sliding seat 25 is provided with a second needle clamping device 251, and the needle member can pass through the first needle clamping device 23 and the second needle clamping device 251 in sequence, so that the fracture site can be better fixed. Preferably, when the needle member passes through the first needle clamping device 23 and the second needle clamping device 251, the needle member can pass through the center position of the adjusting ring 2.

[0037] The first needle clamping device 23 and the second needle clamping device 251 are usually made of a material with a certain elasticity and clamping force, and the structure can also adopt a common structure to fix the needle member. As an example, a hole is formed in the needle clamping device for the needle member to pass through, and a movable slot is provided on the outer side wall. When it is necessary to lock the needle member, the movable slot is driven by a bolt and a nut to make the needle clamping device on both sides of the movable slot close to each other to clamp the needle member. The needle member can be a commonly used orthopedic fixation needle such as a Kirschner wire.

[0038] Further, the adjusting ring 2 is circumferentially provided with a scale (not shown in the figure), which is preferably arranged on the side surface of the adjusting ring 2 facing the proximal end. In this way, the scale can facilitate the doctor to accurately grasp the moving angle of the arc-shaped sliding seat 21.

[0039] Referring to Figure 4 and Figure 5 The main function of the up-down sliding seat 22 is to drive the first needle clamping device 23 to move up and down. The side wall of the up-down sliding seat 22 facing the arc-shaped sliding seat 21 is welded and fixed with a limiting block, and the arc-shaped sliding seat 21 is provided with a limiting groove for the limiting block to slide, and the limiting groove extends radially towards the adjusting ring 2. In this way, it can be ensured that the up-down sliding seat 22 can only move up and down relative to the center position of the adjusting ring 2 along the direction of the limiting groove. The third adjusting assembly 6 includes a third screw 61 rotatably arranged on the arc-shaped sliding seat 21 and a rotating handle 62 connected to the end of the third screw 61, and the third screw 61 is threaded through the limiting block. By rotating the rotating handle 62, the third screw 61 can be rotated to drive the up-down sliding seat 22 to move up and down.

[0040] When the bone is reset, the needle member can be sequentially passed through the first needle clamping device 23, the bone and the second needle clamping device 251, and then the first needle clamping device 23 is locked to lock the needle member. At this time, the needle member is in a state of being able to slide up and down in the second needle clamping device 251. Then, the needle member is moved through the first adjusting assembly 4, the second adjusting assembly 5 and the third adjusting assembly 6, so as to drive the bones of the fracture site to align and reset. At this time, the second needle clamping device 251 is locked again to further fix the reset bone.

[0041] Referring to Figure 5 andFigure 6 In the embodiment of the present application, the fixing assembly 3 is used to detachably fix the adjusting ring 2 on the base 1. Specifically, each of the two installation side plates 12 on the base 1 is provided with a mounting seat 13 on the side facing the adjusting ring 2, and the adjusting ring 2 is detachably fixed on the mounting seat 13. The first adjusting assembly 4 is used to control the movement of the mounting seat 13 along the length direction of the base 1, thereby driving the adjusting ring 2 to move.

[0042] Specifically, the mounting seat 13 is provided with a mounting block 133 on the side facing away from the installation side plate 12, and the adjusting ring 2 is provided with a cooperation block 26 on each of the left and right sides, and the upper surface of the mounting block 133 is provided with a cooperation groove for the cooperation block 26 to insert. The fixing assembly 3 includes a plug rod 31, a spring 32 and a stop block 33, the plug rod 31 is slidingly arranged on the mounting block 133, and the length direction of the plug rod 31 is perpendicular to the side wall of the mounting block 133, one end of the plug rod 31 extends into the cooperation groove, the upper surface of the part of the plug rod 31 extending into the cooperation groove is provided with a guide inclined surface, the other end of the plug rod 31 penetrates out of the mounting block 133 and is connected with the stop block 33, and the spring 32 is fixed between the side wall of the mounting block 133 and the stop block 33; preferably, the plug rod 31 penetrates through the spring 32, and the cooperation block 26 is provided with a through hole 261 for the plug rod 31 to penetrate, and when the plug rod 31 is inserted into the cooperation groove, the spring 32 is in a stretched state.

[0043] The mounting seat 13 and the fixing assembly 3 on the two installation side plates 12 are symmetrically arranged, and when the adjusting ring 2 is needed to be used, the cooperation block 26 of the adjusting ring 2 is only needed to be aligned with the cooperation groove and inserted from top to bottom, and in the process of insertion, the plug rod 31 will be driven to slide through the guide inclined surface, and when the cooperation block 26 is inserted to abut against the bottom wall of the cooperation groove, the plug rod 31 will automatically penetrate through the through hole 261 under the elastic force of the spring 32, and such design makes the installation and dismounting of the adjusting ring 2 more convenient. In order to improve the stability of the fixing of the adjusting ring 2, the plug rod 31 can be provided with multiple ones for multi-point fixing.

[0044] Reference Figure 1 and Figure 2The mounting seat 13 is fixed with a guide block 131 and an adjusting block 132 along the vertical direction towards the side of the mounting side plate 12, and the mounting side plate 12 is provided with two sliding grooves along the length direction for the guide block 131 and the adjusting block 132 to slide in respectively. The first adjusting assembly 4 comprises a guide rod 41, a first screw rod 42 and a power source 43. The mounting seat 13 is provided in plurality along the length direction of the mounting side plate 12, and the number of the adjusting ring 2 can be set according to actual needs. The guide rod 41 is fixedly provided on the mounting side plate 12, and the surface thereof is smooth and sequentially slides through the guide blocks 131 on all the mounting seats 13 on the same side; meanwhile, the adjusting blocks 132 on all the mounting seats 13 on the same side are staggered along the vertical direction, the first screw rod 42 is correspondingly provided with the adjusting block 132, the first screw rod 42 is rotationally provided on the mounting side plate 12 and is threaded through the corresponding adjusting block 132, and the power source 43 is correspondingly connected with the first screw rod 42 and can drive the first screw rod 42 to rotate. The power source 43 can be a motor, which drives the first screw rod 42 to rotate, so as to move the adjusting block 132 along the first screw rod 42, and further drives the adjusting ring 2 to move along the length direction of the base 1; alternatively, the power source 43 can be a handle, so as to manually control the first screw rod 42 to rotate.

[0045] Through the setting mode, each mounting seat 13 can be moved individually. Before the bone is reset, the number of the adjusting ring 2 required to be used can be determined according to the fracture condition, and the adjusting ring 2 is installed on the mounting seat 13; meanwhile, the position of the adjusting ring 2 is moved by the first adjusting assembly 4 according to the fracture position. When the needle passes through the bone and needs to move the bone along the length direction of the base 1, the adjusting ring 2 is driven to rotate by the first adjusting assembly 4 again, so as to drive the bone to move.

[0046] With reference to Figure 5 and Figure 6 , the connecting assembly 7 is used for fixing all the adjusting rings 2 after the fracture reset is completed. The connecting assembly 7 comprises a plurality of connecting screw rods 71 and a plurality of positioning nuts 72, the connecting hole 262 is provided on the part of the cooperation block 26 outside the cooperation groove, the connecting screw rod 71 can pass through the connecting holes 262 on all the adjusting rings 2, and the positioning nut 72 is symmetrically provided on both sides of the cooperation block 26 for locking the cooperation block 26, so as to lock all the adjusting rings 2 together.

[0047] Optionally, the connecting screw 71 can also pass through the through holes 261 on all the cooperating blocks 26 in sequence. When the connecting screw 71 passes through the through holes 261 to fix all the adjusting rings 2 through the cooperating blocks 26 at both ends, the fixing assembly 3 can be unlocked, and the adjusting rings 2 can be removed from the mounting side plate 12. At this time, further, the connecting screw 71 can pass through the corresponding through holes 261 in sequence again, and be locked by the positioning nut 72 as well, so that the stability of the connection of the adjusting rings 2 can be further improved.

[0048] Further optionally, in addition to the adjusting rings 2 for assisting in moving the bone, two adjusting rings 2 can be arranged at the proximal end and the distal end. For example, for a fractured calf, the adjusting ring 2 at the proximal end can be arranged near the knee, and the adjusting ring 2 at the distal end can be arranged near the foot. After the two adjusting rings 2 are reset below the fracture site, the needle can be passed through, so as to further fix the bone.

[0049] The implementation principle of the embodiment is as follows: when the resetting device is used, it can be placed on a sickbed, and then the number of adjusting rings 2 can be set according to the condition of the patient's injury. For example, for a fracture that occurs only once, two adjusting rings 2 can be arranged. The patient's leg is first passed through the two adjusting rings 2 and placed on the support seat 11. The support seat 11 is moved up and down to adjust the position of the fractured leg of the patient to the center of the adjusting ring 2. Then, the two adjusting rings 2 are controlled to appropriate positions at both ends of the fracture site by the first adjusting assembly 4.

[0050] Next, according to the injury, the needle is passed through the first needle holder 23, the bone, and the second needle holder 251 at appropriate positions. At this time, the needle can also be installed on the first needle holder 23 and the second needle holder 251 after being passed through the bone. The first needle holder 23 is locked, and the needle is moved to align the bones at both ends of the fracture by the cooperative action of the first adjusting assembly 4, the second adjusting assembly 5, and the third adjusting assembly 6. After the alignment is confirmed, the movement of the arc-shaped sliding seat 21 is limited in sequence by the limiting bolt 83, and the two adjusting rings 2 are connected and fixed by the connecting screw 71. Then, the adjusting rings 2 are removed from the mounting side plate 12, and the connecting screw 71 is passed through the through holes 261 to ensure the stable fixation of the adjusting rings 2.

[0051] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A bone fracture reduction device, characterized by: The device comprises a base (1), an adjusting ring (2), an arc-shaped sliding seat (21), an up-and-down sliding seat (22), a first needle clamping device (23), a fixing assembly (3), a first adjusting assembly (4), a second adjusting assembly (5), a third adjusting assembly (6) and a connecting assembly (7). The distal end of the base (1) is provided with a support seat (11) for placing the patient's feet, the adjusting ring (2) is detachably arranged on the base (1) through the fixing assembly (3), a plurality of adjusting rings (2) are arranged along the length direction of the base (1), the first adjusting assembly (4) can control the adjusting ring (2) to reciprocate along the length direction of the base (1). The arc-shaped sliding seat (21) is arranged on the upper end of the adjusting ring (2), the second adjusting assembly (5) can control the arc-shaped sliding seat (21) to reciprocate on the adjusting ring (2), the up-and-down sliding seat (22) is arranged on the arc-shaped sliding seat (21) to slide up and down, the third adjusting assembly (6) can control the up-and-down sliding seat (22) to move up and down, and the first needle clamping device (23) is arranged on the up-and-down sliding seat (22). The second adjusting assembly (5) comprises a gear (51), a rack (52) and a control handle (53), a ring groove is formed in the adjusting ring (2), the rack (52) is arranged on the inner end side wall of the ring groove, the gear (51) is rotatably arranged on the arc-shaped sliding seat (21) and located in the ring groove, the gear (51) is engaged with the rack (52), and the control handle (53) is arranged on the side of the arc-shaped sliding seat (21) away from the adjusting ring (2) and coaxially connected with the gear (51). When the fracture reduction is completed, the connecting assembly (7) can fixedly connect all the adjusting rings (2).

2. A bone fracture reduction device according to claim 1, wherein: An annular guide rail is arranged between the arc-shaped sliding seat (21) and the adjusting ring (2), the reset device further comprises a limiting assembly (8) for limiting the movement of the arc-shaped sliding seat (21), the limiting assembly (8) comprises a linkage ring (81), a linkage rod (82) and a limiting bolt (83), the linkage ring (81) is rotatably arranged on the adjusting ring (2), the arc-shaped sliding seat (21) and the linkage ring (81) are connected through the linkage rod (82), a plurality of threaded holes (811) are formed in the circumference of the linkage ring (81), a plurality of waist-shaped holes (24) are formed in the outer wall of the adjusting ring (2), and the limiting bolt (83) can pass through the waist-shaped hole (24) and be threadedly connected with the threaded hole (811) on the linkage ring (81).

3. A bone fracture reduction device according to claim 2, wherein: The lower end of the adjusting ring (2) is further provided with a synchronous sliding seat (25), the synchronous sliding seat (25) is symmetrically arranged with the arc-shaped sliding seat (21), the synchronous sliding seat (25) is fixedly connected with the linkage ring (81), a second needle clamping device (251) is arranged on the synchronous sliding seat (25), and the needle pieces can pass through the first needle clamping device (23) and the second needle clamping device (251) in sequence.

4. A bone fracture reduction device according to claim 3, wherein: The adjusting ring (2) is provided with a scale in the circumferential direction.

5. A bone fracture reduction device according to any one of claims 1-4, characterized in that: The upper and lower sliding seats (22) are provided with limiting blocks, the arc-shaped sliding seat (21) is provided with limiting grooves for the limiting blocks to slide along the adjusting ring (2) in the radial direction, the third adjusting assembly (6) comprises a third screw rod (61) rotatably arranged on the arc-shaped sliding seat (21) and a rotating handle (62) connected to the end of the third screw rod (61), and the third screw rod (61) is threaded through the limiting block.

6. A bone fracture reduction device according to any one of claims 1-4, characterized in that: The base (1) is provided with mounting side plates (12) on both sides, the mounting side plates (12) are provided with mounting seats (13) on the side facing the adjusting ring (2), the adjusting ring (2) is detachably fixed on the mounting seats (13), the mounting seats (13) are provided with guide blocks (131) and adjusting blocks (132) at intervals, the mounting side plates (12) are provided with two sliding grooves for the guide blocks (131) and the adjusting blocks (132) to slide along the length direction respectively, and the first adjusting assembly (4) comprises guide rods (41), first screw rods (42) and power sources (43). The mounting seats (13) are provided at intervals along the length direction of the mounting side plates (12), the guide rods (41) are arranged on the mounting side plates (12) and slide through all the guide blocks (131) in sequence, the adjusting blocks (132) on all the mounting seats (13) are arranged in a staggered manner along the vertical direction, the first screw rods (42) are arranged correspondingly to the adjusting blocks (132), the first screw rods (42) are rotatably arranged on the mounting side plates (12) and threaded through the corresponding adjusting blocks (132), and the power sources (43) are connected to the first screw rods (42) one by one and can drive the first screw rods (42) to rotate.

7. A bone fracture reduction device according to claim 6, wherein: The mounting seats (13) are provided with mounting blocks (133) on the side away from the mounting side plates (12), the adjusting ring (2) is provided with cooperation blocks (26) on both sides, the upper surfaces of the mounting blocks (133) are provided with cooperation grooves for the cooperation blocks (26) to insert, the fixing assembly (3) comprises inserting rods (31), springs (32) and stop blocks (33), the inserting rods (31) are slidingly arranged on the mounting blocks (133), one end of the inserting rods (31) extends into the cooperation grooves, the upper surfaces of the inserting rods (31) extending into the cooperation grooves are provided with guide inclined surfaces, the other end of the inserting rods (31) penetrates out of the mounting blocks (133) and is connected to the stop blocks (33), the springs (32) are arranged between the side walls of the mounting blocks (133) and the stop blocks (33), and the cooperation blocks (26) are provided with through holes (261) for the inserting rods (31) to penetrate, when the inserting rods (31) are inserted into the cooperation grooves, the springs (32) are in a stretched state.

8. A bone fracture reduction device according to claim 7, wherein: The connecting assembly (7) comprises a plurality of connecting screws (71) and a plurality of positioning nuts (72), the connecting holes (262) are arranged on the part of the matching block (26) outside the matching groove, the connecting screws (71) can pass through the connecting holes (262) on all the adjusting rings (2), the positioning nuts (72) are symmetrically arranged on both sides of the matching block (26) and used for locking the matching block (26), and the connecting screws (71) can also pass through the through holes (261) on all the matching blocks (26) in sequence.

9. A bone fracture reduction device as in claim 1, wherein: The support seat (11) is movably arranged on the base (1) in an up-down mode, the upper surface of the support seat (11) is downwardly bent and provided with a placing groove (111), and the upper surface of the support seat (11) is provided with a flexible pad (112).

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