A tibial transverse bone transport device

Abstract

The present invention relates to a tibial transverse bone transport device, comprising an external fixer, the middle part of which bulges upward, a movable seat that can move up and down is provided below the middle part of the external fixer, two first traction pins that can move up and down are provided on the movable seat, two vertical rods are slidably connected to the two ends of the external fixer, the bottom of the vertical rod is fitted with a second traction pin, a slide groove is provided on both the front and rear sides of the external fixer, and shields that can limit the vertical rods are slidably connected in the slide grooves at both ends of the external fixer. By moving the vertical rod to a position close to the skin and making the fixer close to the skin, the device is connected to the tibia of the human body, and the shield can cover the external fixer as a whole, and the surface of the shield is arranged in an arc shape. When the device is scratched or collided with external structures such as quilts or clothes, the shield can play a role of buffering and protection, avoiding direct scratching or collision caused by the external fixer or the first traction pins and the second traction pins.

Description

Technical Field

[0001] The invention relates to bone transport technology, in particular to a tibial transverse bone transport device. Background Art

[0002] The transverse tibial bone transport technique is a new method for the clinical treatment of diabetic foot. It is formed on the basis of the "tension-stress law". When the biological tissue is pulled slowly and continuously, a certain tension will be generated, and the tissue regeneration function will be activated and strengthened, resulting in tissue regeneration and reconstruction. The clinical application of the transverse tibial bone transport technique can stimulate the vascular microcirculation of the affected lower limb, provide the necessary blood supply and nutrients for the wound healing of patients with diabetic foot, effectively promote wound healing and vascular regeneration in patients with diabetic foot, thereby improving the ulcer cure rate.

[0003] The tibial transverse bone transport technique first makes an arc-shaped incision on the inner side of the middle and lower part of the tibia, cuts the skin and subcutaneous tissue to the transmembrane surface, determines the osteotomy range of the tibia, cuts the periosteum longitudinally in the middle of the osteotomy range, and completely lifts the periosteum on both sides to expose the osteotomy area. A small bone knife is used to chisel the bone cortex according to the planned osteotomy range to form a movable tibial window. A traction pin is inserted in the upper and lower parts of the tibial window to play a role in lateral transport. Two traction pins are inserted in parallel at the distal and proximal ends of the tibia for external fixation. The external fixator is installed and fixed. The transport begins on the fifth day after surgery. The tibial window is moved one millimeter every day, which is completed in three times. The transport is continued for twenty-one days, and then it is moved in the opposite direction at the same speed for twenty-one days. The bracket is removed after four weeks of stopping the transport.

[0004] The existing transverse tibial bone transport devices are often not convenient for making the external fixator fit the skin to a certain extent and reducing the scratches and collisions on the traction pin caused by external structures such as quilts or clothes, which in turn leads to the problem of position displacement of the external fixator. In addition, most of the existing transverse tibial bone transport devices adjust the distance of the tibial window movement by rotating the knob. When rotating the knob, it is often not convenient to control the rotation angle of the knob, thereby making it difficult to avoid the problem of misoperation when rotating the knob. Summary of the invention

[0005] The object of the present invention is to provide a tibial transverse bone transport device, which is used to solve the problems that the existing external fixator is convenient for making it fit the skin to a certain extent and reducing the scratches and collisions on the traction needle caused by external structures such as cups or clothes, and it is not convenient to control the rotation angle of the knob and avoid misoperation when rotating the knob.

[0006] In order to solve the above problems, the present invention provides a tibial transverse bone transport device, including an external fixator, characterized in that the middle part of the external fixator bulges upward, a movable seat that can move up and down is provided below the middle part of the external fixator, two first traction pins that can move up and down are provided on the movable seat, two vertical rods are slidably connected to the two ends of the external fixator respectively, the bottom of the vertical rod is sleeved with a second traction pin, the front and rear sides of the external fixator are both provided with sliding grooves, and shields that can limit the vertical rods are slidably connected in the sliding grooves at the two ends of the external fixator respectively;

[0007] The middle part of the external fixator is provided with an opening, a fixing ring is fixed in the opening, a bottom cylinder is provided under the fixing ring, the surface of the bottom cylinder is fixedly connected to the external fixator, the middle part of the bottom cylinder is rotatably connected to a rotating column, a reciprocating screw rod is coaxially fixed to the bottom of the rotating column, a through hole is provided in the middle part of the movable seat, a sliding seat screwed to the reciprocating screw rod is fixedly installed in the through hole, a limiting groove is provided on the upper side of the rotating column, a limiting rod is slidably connected in the limiting groove, a round cover is fixed on the top of the limiting rod, and the lower side of the limiting rod is connected to the rotating column through a compression spring, a plurality of vertical blocks arranged in an annular array are fixed around the round cover, the upper surface of the vertical block is an inclined surface, a plurality of inclined grooves corresponding to the vertical blocks are provided on the top of the bottom cylinder, and the plurality of inclined grooves are all arranged to be lower on the left and higher on the right and are connected end to end, a plurality of grooves corresponding to the inclined grooves are provided on the lower side of the fixing ring, the top of the vertical block can be slidably connected to the corresponding groove, and the positions of the groove and the corresponding inclined groove are staggered so that the vertical block can contact the inclined surface of the corresponding inclined groove when moving downward, and a button is rotatably connected to the top of the round cover.

[0008] The tibial transverse bone transport device provided by the present invention also has the following technical features:

[0009] Furthermore, a rectangular rod is fixed to the lower side of the middle part of the external fixator, the rectangular rod is slidably connected to the movable seat, and two abutment bolts are threadedly connected to the movable seat, and the bottom ends of the abutment bolts can abut against the corresponding first traction needle.

[0010] Furthermore, the top of the vertical rod is arranged in a cross shape, and the front and rear sides of the vertical rod are respectively provided with a plurality of slots evenly distributed along the up and down directions. The protective cover includes an arc-shaped cover body and two sliding plates, and the two sliding plates are respectively fixed on both sides of the bottom of the cover body. The sliding plates are slidably connected to the sliding slots, and the sliding plates can be inserted into the corresponding slots.

[0011] Furthermore, a give-way groove is provided in the vertical rod, the give-way groove is connected to a plurality of card slots, a push rod is slidably connected in the give-way groove, one side of the top of the push rod can be located in the plurality of card slots, a plug is fixed to the bottom of the push rod, a plurality of V-shaped grooves evenly distributed along the up and down directions are provided in the second traction needle, the plug can be inserted into the corresponding V-shaped grooves, one side of the push rod is connected to the vertical rod via a spring, one side of the sliding plate is provided with a chamfer, and the chamfer of the sliding plate can contact one side of the top of the push rod.

[0012] Furthermore, a plurality of display boards corresponding to the vertical blocks are fixed at the edge of the upper side of the circular cover, a shield is fixed in the opening of the external fixing frame, an observation hole is opened on the shield, and the plurality of display boards can be located under the observation hole one by one.

[0013] Furthermore, a vertical groove is provided on the button, and the shield is slidably connected to the vertical groove.

[0014] Furthermore, the opposite sides of the two covers can contact each other, and semicircular holes are respectively opened on the opposite sides of the two covers. The two semicircular holes can be assembled into a circular hole, and the circular hole is located above the button. A positioning bolt is threadedly connected to the cover, and the bottom end of the positioning bolt can contact the upper side of the external fixation frame.

[0015] Furthermore, the lower surface of the vertical block is an inclined surface which is lower on the left and higher on the right, and the lower surface of the vertical block can contact the inclined surface of the corresponding inclined groove, and a V-shaped slope is provided between two adjacent grooves on the lower side of the fixing ring.

[0016] Furthermore, connecting seats are fixed on both sides of the movable seat, and a rotating plate is hinged on the connecting seat via a rotating shaft. Both ends of the rotating shaft are fixedly connected to the connecting seat via torsion springs. Two relatively arranged circular plates are fixed on the lower side of the middle part of the external fixed frame. One side of the circular plate is provided with a plurality of V-shaped buckle grooves evenly distributed in the up and down directions. One end of the rotating plate can be inserted into the buckle groove, and the rotating plate can extend into the hole on the circular plate.

[0017] Furthermore, the rotating plate includes a rotating plate and an inserting plate, the inserting plate is detachably connected to the rotating plate by sliding, one side of the inserting plate can be inserted into the buckle groove, a knob is threadedly connected to the rotating plate, and one end of the knob can contact the surface of the inserting plate.

[0018] The present invention has the following beneficial effects:

[0019] 1. By moving the vertical rod to a position close to the skin and making the fixing frame close to the skin, after the device is connected to the human tibia, the external fixator can fit the skin as closely as possible, and the protective cover can cover the external fixator as a whole, and the surface of the cover is arranged in an arc shape. When the device is scratched or collided with external structures such as quilts or clothes, the cover can play a role of buffering and protection, avoiding direct scratching or collision by the external fixator or the first traction needle and the second traction needle, causing serious consequences, and then leading to the problem of position displacement of the external fixator.

[0020] 2. By pressing the button three times a day, the first traction needle can move the tibial window one millimeter a day. After pressing the button for twenty-one days, the moving seat moves to the top of the reciprocating screw. Press the button again. Under the action of the reciprocating screw, the moving seat can move in the opposite direction, which can play a role in reverse transportation of the tibial window. Then, it is moved in the opposite direction at the same speed for twenty-one days, so that the device only needs to press the button to move the tibial window. Pressing it three times a day can effectively avoid the problem of the single tibial window movement distance being unadjustable, and at the same time avoid the existing problem of the knob rotation angle being difficult to control and the reverse rotation misoperation when adjusting through the knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an axonometric diagram of an embodiment of the present invention;

[0022] Figure 2 A three-dimensional diagram of an embodiment of the present invention without a protective cover;

[0023] Figure 3 For the embodiment of the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 A front view cutaway diagram of a fracture of an embodiment of the present invention;

[0025] Figure 5 For the embodiment of the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0026] Figure 6 It is a right side cutaway view of an embodiment of the present invention;

[0027] Figure 7 It is a right side cutaway view of a vertical rod in an embodiment of the present invention;

[0028] Figure 8 It is an axonometric view of the fixing ring, the bottom cylinder, the round cover and the vertical block in the embodiment of the present invention;

[0029] Fig. 9 An exploded view of a fixing ring, a bottom cylinder, a round cover and a vertical block in an embodiment of the present invention;

[0030] Fig.10 is a schematic structural diagram of a sliding plate in an embodiment of the present invention;

[0031] Fig.11 This is a relative position diagram between the rotating plate and the circular plate after the moving base in the embodiment of the present invention moves one cycle. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0033] like Figures 1 to 11 In the embodiment of the tibial transverse bone transport device of the present invention shown in the figure, the tibial transverse bone transport device comprises an external fixator 1, the middle part of the external fixator 1 bulges upward, a movable seat 2 which can move up and down is provided below the middle part of the external fixator 1, two first traction pins 3 which can move up and down are provided on the movable seat 2, two vertical rods 4 are slidably connected to the two ends of the external fixator 1, the bottom of the vertical rod 4 is sleeved with a second traction pin 5, sliding grooves are provided on the front and back sides of the external fixator 1, and shields 6 which can limit the vertical rod 4 are slidably connected in the sliding grooves at the two ends of the external fixator 1, respectively, by placing the two second traction pins 5 in parallel into one end of the tibia, and placing the other two second traction pins 5 in parallel into the other end of the tibia, by determining the osteotomy range of the tibia, the periosteum is longitudinally incised in the middle of the osteotomy range, and the periosteum is completely lifted to both sides to expose the osteotomy In the bone area, the bone cortex is chiseled with a small bone knife according to the planned osteotomy range to form a movable tibial window, and the two first traction pins 3 are respectively placed on both sides of the tibial window, and a plurality of vertical rods 4 are respectively inserted into the corresponding second traction pins 5, and the two first traction pins 3 are respectively inserted into the movable seat 2. Since the middle part of the external fixator 1 bulges upward, and the movable seat 2 is located in the depression in the middle part of the external fixator 1, the movement range of the movable seat 2 is limited below the external fixator 1, and by selecting a shorter first traction pin 3 and fixing the position of the first traction pin 3 in the movable seat 2 by the tightening bolt 19, the first traction pin 3 is connected to the movable seat 2, and the vertical rod 4 is moved to a position close to the skin, and the fixation frame 1 is close to the skin, and then the sliding plate 602 is inserted into the sliding groove, and the sliding plate 602 It can be inserted into the card slot 21 on the vertical rod 4, so as to limit the vertical rod 4, and the chamfer on the sliding plate 602 can contact one side of the push rod 23 and push the push rod 23 to move, so that the plug 24 can be inserted into the corresponding V-shaped groove, so as to achieve the relative position between the fixed vertical rod 4 and the second traction needle 5, and then achieve the external fixator 1 can fit the skin as much as possible after the device is connected to the human tibia, and the shield 6 can cover the external fixator 1 as a whole, and the surface of the cover body 601 is set in an arc shape. When the device is scratched or collided with external structures such as quilts or clothes, the cover body 601 can play a role of buffering and protection, avoiding the external fixator 1 or the first traction needle 3 and the second traction needle 5 directly causing scratches or collisions, causing serious consequences, and then causing the problem of position displacement of the external fixator 1;

[0034] An opening is provided in the middle of the external fixing frame 1, a fixing ring 7 is fixed in the opening, a bottom cylinder 8 is provided below the fixing ring 7, the surface of the bottom cylinder 8 is fixedly connected to the external fixing frame 1, a rotating column 9 is rotatably connected to the middle of the bottom cylinder 8, a reciprocating screw rod 10 is coaxially fixed to the bottom of the rotating column 9, a through hole is provided in the middle of the movable seat 2, a sliding seat 11 screwed to the reciprocating screw rod 10 is fixedly installed in the through hole, a limiting groove is provided on the upper side of the rotating column 9, a limiting rod 12 is slidably connected in the limiting groove, a round cover 13 is fixed on the top of the limiting rod 12, the lower side of the limiting rod 12 is connected to the rotating column 9 via a compression spring 20, and a plurality of vertical blocks 14 arranged in a ring array are fixed around the round cover 13 The upper surface of the vertical block 14 is an inclined surface, and the top of the bottom cylinder 8 is provided with a plurality of inclined grooves 15 corresponding to the vertical block 14 one by one. The plurality of inclined grooves 15 are arranged in a left-lower and right-higher configuration and are connected end to end. The lower side of the fixing ring 7 is provided with a plurality of grooves 16 corresponding to the inclined grooves 15 one by one. The top of the vertical block 14 can be slidably connected with the corresponding grooves 16. The positions of the grooves 16 and the corresponding inclined grooves 15 are staggered so that the vertical block 14 can contact the inclined surface of the corresponding inclined groove 15 when it moves downward. The top of the round cover 13 is rotatably connected with a button 17. When the device is used, by pressing the button 17 downward, the round cover 13 and the vertical block 14 are driven to move downward, and the vertical block 14 moves downward. It can contact with the inclined groove 15 on the bottom cylinder 8, and as the vertical block 14 moves downward, the round cover 13, the limit rod 12, the rotating column 9 and the reciprocating screw 10 are rotated to a certain angle. The rotation of the reciprocating screw 10 can drive the sliding seat 11, the moving seat 2 and the first traction needle 3 to move, thereby playing a role in moving the tibial window. When the vertical block 14 moves to the bottom of the inclined groove 15, the button 17 is released, and the round cover 13 and the vertical block 14 can move upward under the action of the compression spring 20, so that the inclined surface of the upper surface of the vertical block 14 contacts with the groove 16, and the vertical block 14 is inserted into the corresponding groove 16. By pressing the button 17 three times a day, the first traction needle 3 The tibial window can be moved one millimeter a day. After pressing the button 17 for twenty-one days, the moving seat 2 moves to the top of the reciprocating screw 10. Press the button 17 again. Under the action of the reciprocating screw 10, the moving seat 2 can move in the opposite direction, which can play a role in reverse transportation of the tibial window. Then, it is moved in the opposite direction at the same speed for twenty-one days, so that the device only needs to press the button 17 when moving the tibial window. Pressing it three times a day can effectively avoid the problem of the single tibial window movement distance being unadjustable, and at the same time avoid the existing problem of the knob rotation angle being difficult to control and the reverse rotation misoperation when adjusting through the knob.

[0035] In one embodiment of the present application, preferably, a rectangular rod 18 is fixed to the lower side of the middle part of the external fixator 1, and the rectangular rod 18 is slidably connected to the movable seat 2. Two clamping bolts 19 are threadedly connected to the movable seat 2. The bottom end of the clamping bolt 19 can be in contact with the corresponding first traction needle 3. By rotating the clamping bolt 19, the position of the first traction needle 3 in the movable seat 2 can be fixed. The setting of the rectangular rod 18 plays a limiting role, so that the movable seat 2 can move up and down along the rectangular rod 18.

[0036] In one embodiment of the present application, preferably, the top of the vertical rod 4 is arranged in a cross shape, and the two vertical rods 4 on the same side can be fixed by a connecting rod. The front and rear sides of the vertical rod 4 are respectively provided with a plurality of slots 21 evenly distributed along the up and down directions. The protective cover 6 includes an arc-shaped cover body 601 and two sliding plates 602. The two sliding plates 602 are respectively fixed on both sides of the bottom of the cover body 601. The sliding plates 602 are slidably connected to the sliding grooves. The sliding plates 602 can be inserted into the corresponding slots 21. When the sliding plates 602 are inserted into the corresponding slots 21 on the vertical rod 4, they can play a role in fixing the relative position between the vertical rod 4 and the external fixing frame 1.

[0037] In one embodiment of the present application, preferably, a clearance groove 22 is provided in the vertical rod 4, the clearance groove 22 is connected to the multiple card slots 21, a push rod 23 is slidably connected in the clearance groove 22, one side of the top of the push rod 23 can be located in the multiple card slots 21, a plug 24 is fixed to the bottom of the push rod 23, a plurality of V-shaped grooves evenly distributed along the up and down directions are provided in the second traction needle 5, the plug 24 can be inserted into the corresponding V-shaped grooves, one side of the push rod 23 is connected to the vertical rod 4 via a spring, one side of the sliding plate 602 is provided with a chamfer, the chamfer of the sliding plate 602 can contact one side of the top of the push rod 23, so that the sliding plate 602 is inserted into the slide groove, and the sliding plate 602 It can be inserted into the card slot 21 on the vertical rod 4, so as to limit the vertical rod 4, and the chamfer on the sliding plate 602 can contact one side of the push rod 23 and push the push rod 23 to move, so that the plug 24 can be inserted into the corresponding V-shaped groove, thereby achieving the relative position between the fixed vertical rod 4 and the second traction needle 5, so that after the shield 6 is installed, the second traction needle 5 of the device can be installed and fixed with the external fixation frame 1. Compared with the frequent rotation of bolts in the prior art, the installation of this device is more convenient and quick.

[0038] In one embodiment of the present application, preferably, a plurality of display boards 25 corresponding to the vertical blocks 14 are fixed at the edge of the upper side of the round cover 13, a shield 26 is fixed in the opening of the external fixing frame 1, and an observation hole 27 is opened on the shield 26, and the plurality of display boards 25 can be located one by one under the observation hole 27, the number of grooves 16 on the fixing ring 7 is a multiple of three, and the number of display boards 25 is the same as the number of grooves 16, and numbers one, two and three are marked on the plurality of display boards 25 in sequence. In the initial state, the display board 25 marked with number one can be observed through the observation hole 27, which means one If the button 17 has not been pressed within one day, after being pressed, the display plate 25 with number two can be observed through the observation hole 27, which means that the button 17 has not been pressed for the second time within one day. After being pressed again, the display plate 25 with number three can be observed through the observation hole 27, which means that the button 17 has not been pressed for the third time within one day. After being pressed for the third time, the display plate 25 with number one can be observed through the observation hole 27, which means that the button 17 has been pressed completely within one day, thereby enabling the device to serve as a reminder for the patient or caregiver of the number of presses within one day to avoid pressing too much or too little.

[0039] In one embodiment of the present application, preferably, a vertical slot is provided on the button 17, and the shield 26 is slidably connected to the vertical slot, so that the button 17 can only move up and down.

[0040] In one embodiment of the present application, preferably, the opposite sides of the two cover bodies 601 can contact each other, and the opposite sides of the two cover bodies 601 are respectively provided with semicircular holes, and the two semicircular holes can be assembled into a circular hole 28, and the circular hole 28 is located above the button 17. A positioning bolt 29 is threadedly connected to the cover body 601, and the bottom end of the positioning bolt 29 can contact the upper side of the external fixation frame 1. By rotating the positioning bolt 29, the cover body 601 can be positioned, and the coordinated setting of the two cover bodies 601 can protect the device, and the setting of the circular hole 28 can allow a finger to be inserted to press the button 17, and the observation hole 27 can be observed, and at the same time, it can prevent the button 17 from being accidentally touched.

[0041] In one embodiment of the present application, preferably, the lower surface of the vertical block 14 is an inclined surface that is lower on the left and higher on the right. The lower surface of the vertical block 14 can contact the inclined surface of the corresponding inclined groove 15. A V-shaped slope is provided between two adjacent grooves 16 on the lower side of the fixing ring 7, so that when the vertical block 14 stuck in the groove 16 moves downward, the inclined surface of the lower surface of the vertical block 14 can contact the inclined surface of the inclined groove 15, driving the round cover 13 to rotate, and the setting of the V-shaped slope can make it possible for the slope to play a guiding role when the vertical block 14 moves upward, when the vertical block 14 fails to be stuck in the corresponding groove 16 due to a small error, so that the vertical block 14 is stuck in the corresponding groove 16, and when the vertical block 14 moves downward in one groove 16 and resets to be stuck in another groove 16 during the whole process, the final rotation angle of the round cover 13 is the rotation angle of pressing the button 17 once.

[0042] In one embodiment of the present application, preferably, connecting seats 30 are fixed on both sides of the movable seat 2, and a rotating plate 31 is hinged on the connecting seat 30 via a rotating shaft. The two ends of the rotating shaft are fixedly connected to the connecting seat 30 via a torsion spring 32, and two relatively arranged circular plates 33 are fixed on the lower side of the middle part of the external fixed frame 1. One side of the circular plate 33 is provided with a plurality of V-shaped buckle grooves 34 evenly distributed in the up and down directions. One end of the rotating plate 31 can be inserted into the buckle groove 34, and the rotating plate 31 can extend into the hole on the circular plate 33. In the initial state of the device, the upper side of the rotating plate 31 contacts the bottom of the circular plate 33. As the movable seat 2 moves upward, the rotating plate 31 can contact one side of the circular plate 33 under the action of the torsion spring 32, and as the movable seat 2 moves upward, the rotating plate 31 can be separated from the circular plate 33 and inserted into the hole on the circular plate 33, and the rotating plate 31 can be inserted into the hole on the circular plate 33 by the torsion spring 32. The movable seat 2 is in a horizontal state under the action of , and when the movable seat 2 moves downward to move the tibial window back to its original position, the rotating plate 31 can move downward with the movable seat 2, so that the rotating plate 31 can contact the circular plate 33. When the movable seat 2 moves downward to the initial position, the plug plate 312 on the rotating plate 31 can be inserted into the corresponding buckle groove 34. At this time, the movable seat 2 moves as a cycle. At this time, the button 17 is pressed again, and the movable seat 2 should move upward under the action of the reciprocating screw rod 10. However, due to the setting of the rotating plate 31 and the buckle groove 34, the movable seat 2 cannot move upward, which results in that when the button 17 is pressed, the button 17 cannot be pressed to the lowest side, thereby completing the entire tibial window transportation process, thereby avoiding multiple or wrong pressing of the button 17 due to misremembering the time, thereby enabling the device to save human memory, play a role of reminder and restriction, and be easy to operate and use.

[0043] In one embodiment of the present application, preferably, the rotating plate 31 includes a rotating plate 311 and an inserting plate 312, and the inserting plate 312 is detachably connected to the rotating plate 311 by sliding, and one side of the inserting plate 312 can be inserted into the buckle groove 34, and a knob 35 is threadedly connected to the rotating plate 311, and one end of the knob 35 can contact the surface of the inserting plate 312. When the movement stops for four weeks, the device is dismantled and the knob 35 can be loosened at the same time. After the inserting plate 312 is dismantled, it is installed again so that the inserting plate 312 is in the initial position, that is, the position where the upper side of the rotating plate 31 contacts the bottom of the circular plate 33.

[0044] When the present invention is used:

[0045] First, two second traction pins 5 are placed in parallel at one end of the tibia, and the other two second traction pins 5 are placed in parallel at the other end of the tibia. By determining the osteotomy range of the tibia, the periosteum is longitudinally incised in the middle of the osteotomy range, and the periosteum is completely lifted to both sides to expose the osteotomy area. According to the planned osteotomy range, the bone cortex is chiseled with a small bone knife to form a movable tibial window, and the two first traction pins 3 are respectively placed on both sides of the tibial window;

[0046] Then, the plurality of vertical rods 4 are respectively inserted into the corresponding second traction needles 5, and the two first traction needles 3 are respectively inserted into the moving seat 2. Since the middle part of the external fixer 1 bulges upward, and the moving seat 2 is located in the depression in the middle part of the external fixer 1, the moving range of the moving seat 2 is limited below the external fixer 1. By selecting a shorter first traction needle 3 and fixing the position of the first traction needle 3 in the moving seat 2 by the tightening bolt 19, the first traction needle 3 is connected to the moving seat 2. By moving the vertical rod 4 to a position close to the skin and bringing the fixing frame 1 close to the skin, and then inserting the sliding plate 602 into the sliding groove, the sliding plate 602 It can be inserted into the card slot 21 on the vertical rod 4, so as to limit the vertical rod 4, and the chamfer on the sliding plate 602 can contact one side of the push rod 23 and push the push rod 23 to move, so that the plug 24 can be inserted into the corresponding V-shaped groove, so as to achieve the relative position between the fixed vertical rod 4 and the second traction needle 5, and then achieve the external fixator 1 can fit the skin as much as possible after the device is connected to the human tibia, and the shield 6 can cover the external fixator 1 as a whole, and the surface of the cover body 601 is set in an arc shape. When the device is scratched or collided with external structures such as quilts or clothes, the cover body 601 can play a role of buffering and protection, avoiding the external fixator 1 or the first traction needle 3 and the second traction needle 5 directly causing scratches or collisions, causing serious consequences, and then causing the problem of position displacement of the external fixator 1;

[0047] In the initial state of the device, the moving seat 2 is located at the bottom of the reciprocating screw 10, the upper side of the rotating plate 31 contacts the bottom of the torsion spring 32 and the circular plate 33, the display plate 25 marked with the number one can be observed through the observation hole 27, the external fixator 1 fits the skin as closely as possible, and the protective cover 6 can cover the external fixator 1 as a whole;

[0048] When the device is in use, by pressing the button 17 downward, the round cover 13 and the vertical block 14 are driven to move downward, and the vertical block 14 moves downward to contact the inclined groove 15 on the bottom cylinder 8, and as the vertical block 14 moves downward, the round cover 13, the limit rod 12, the rotating column 9 and the reciprocating screw rod 10 are driven to rotate a certain angle, and the rotation of the reciprocating screw rod 10 can drive the sliding seat 11, the moving seat 2 and the first traction needle 3 to move, thereby playing a role in moving the tibial window. When the vertical block 14 moves to the bottom of the inclined groove 15, the button 17 is released, and the round cover 13 and the vertical block 14 can move upward under the action of the compression spring 20, so that the inclined surface of the upper surface of the vertical block 14 contacts the groove 16, and the vertical block 14 is inserted into the corresponding groove 16. The setting of the V-shaped slope can make it possible for the slope to play a guiding role when the vertical block 14 moves upward, when the vertical block 14 fails to fit into the corresponding groove 16 due to a small error, so that the vertical block 14 is inserted into the corresponding The vertical block 14 moves downward in one groove 16 and resets to fit into another groove 16. During this whole process, the angle at which the round cover 13 is finally rotated is the angle at which the button 17 is rotated once. By pressing the button 17 three times a day, the first traction needle 3 can drive the tibial window to move one millimeter a day. After pressing the button 17 for twenty-one days, the moving seat 2 moves to the top of the reciprocating screw 10. The button 17 is pressed again. Under the action of the reciprocating screw 10, the moving seat 2 can move in the reverse direction, which can play a role in reverse transport of the tibial window. Then, it is reversely transported at the same speed for twenty-one days, so that the device only needs to press the button 17 when moving the tibial window. Pressing it three times a day can effectively avoid the problem that the distance of the tibial window cannot be adjusted at a single time, and at the same time avoid the problem that the rotation angle of the knob is difficult to control and the reverse rotation misoperation occurs when adjusting by the knob.

[0049] In the initial state, the display plate 25 marked with number one can be observed through the observation hole 27, which means that the button 17 has not been pressed within a day. After pressing, the display plate 25 marked with number two can be observed through the observation hole 27, which means that the button 17 has not been pressed twice within a day. After pressing again, the display plate 25 marked with number three can be observed through the observation hole 27, which means that the button 17 has not been pressed three times within a day. After the third pressing, the display plate 25 marked with number one can be observed through the observation hole 27, which means that the button 17 has been pressed completely within a day, thereby enabling the device to play the role of reminding the patient or the caregiver of the number of pressings within a day to avoid pressing too much or too little.

[0050] In the initial state, the upper side of the rotating plate 31 contacts the bottom of the circular plate 33. As the moving seat 2 moves upward, the rotating plate 31 can contact one side of the circular plate 33 under the action of the torsion spring 32, and as the moving seat 2 moves upward, the rotating plate 31 can be separated from the circular plate 33 and inserted into the hole on the circular plate 33, and the rotating plate 31 can be in a horizontal state under the action of the torsion spring 32. When the moving seat 2 moves downward to move the tibial window back to its original position, the rotating plate 31 can move downward with the moving seat 2, so that the rotating plate 31 can contact the circular plate 33. When the moving seat 2 moves downward to the initial position, the plug plate 312 on the rotating plate 31 can be snapped into the corresponding buckle groove 34. At this time, the moving seat 2 moves as a cycle. At this time, press again Button 17, the movable seat 2 should move upward under the action of the reciprocating screw rod 10, but due to the setting of the rotating plate 31 and the buckle groove 34, the movable seat 2 cannot move upward, so that when the button 17 is pressed, the button 17 cannot be pressed to the lowermost side, so that the entire tibial window transportation process is completed, which plays a role in avoiding multiple or wrong pressing of the button 17 due to misremembering the time, so that the device can save human memory, can play a role of reminder and restriction, and can be easy to operate and use. After stopping the movement for four weeks, the device is dismantled, and the knob 35 can be loosened at the same time. After the plug plate 312 is disassembled, the plug plate 312 is installed again, so that the plug plate 312 is located in the initial position, that is, the position where the upper side of the rotating plate 31 contacts the bottom of the circular plate 33.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tibial transverse bone transport device, comprising an external fixator (1), characterized in that: The middle part of the external fixator (1) bulges upwards, a movable seat (2) that can move up and down is provided below the middle part of the external fixator (1), two first traction needles (3) that can move up and down are provided on the movable seat (2), two vertical rods (4) are slidably connected to the two ends of the external fixator (1), and the bottom of the vertical rod (4) is sleeved with a second traction needle (5), and the front and rear sides of the external fixator (1) are provided with sliding grooves, and shields (6) that can limit the vertical rod (4) are slidably connected in the sliding grooves at the two ends of the external fixator (1); The external fixing frame (1) has an opening in the middle, a fixing ring (7) is fixed in the opening, a bottom cylinder (8) is provided below the fixing ring (7), the surface of the bottom cylinder (8) is fixedly connected to the external fixing frame (1), a rotating column (9) is rotatably connected in the middle of the bottom cylinder (8), a reciprocating screw rod (10) is coaxially fixed to the bottom of the rotating column (9), a through hole is formed in the middle of the movable seat (2), a sliding seat (11) screwed to the reciprocating screw rod (10) is fixedly installed in the through hole, and the rotating column (9) A limiting groove is provided on the upper side, a limiting rod (12) is slidably connected in the limiting groove, a round cover (13) is fixed on the top of the limiting rod (12), the lower side of the limiting rod (12) is connected to the rotating column (9) via a compression spring (20), a plurality of vertical blocks (14) arranged in a ring array are fixed around the circular cover (13), the upper surface of the vertical block (14) is an inclined surface, and a plurality of inclined grooves (15) corresponding to the vertical blocks (14) are provided on the top of the bottom cylinder (8), and the plurality of inclined grooves (15) are The upper and lower parts of the vertical blocks (14) are arranged on the lower side of the fixing ring (7) and the corresponding grooves (15). The top of the vertical block (14) can be slidably connected with the corresponding grooves (16). The positions of the grooves (16) and the corresponding grooves (15) are staggered so that the vertical block (14) can contact the inclined surface of the corresponding groove (15) when moving downward. The top of the round cover (13) is rotatably connected with a button (17). The edge of the upper side of the round cover (13) is fixed. A plurality of display boards (25) corresponding to the vertical blocks (14) are provided, a shielding plate (26) is fixed in the opening of the external fixing frame (1), an observation hole (27) is provided on the shielding plate (26), and the plurality of display boards (25) can be located one by one below the observation hole (27), the number of the grooves (16) on the fixing ring (7) is a multiple of three, and the number of the display boards (25) is the same as the number of the grooves (16), and the numbers one, two and three are marked on the plurality of display boards (25) in sequence.

2. The tibial transverse bone transport device according to claim 1, characterized in that: A rectangular rod (18) is fixed to the lower side of the middle of the external fixation frame (1), the rectangular rod (18) is slidably connected to the movable seat (2), and two abutment bolts (19) are threadedly connected to the movable seat (2), and the bottom ends of the abutment bolts (19) can abut against the corresponding first traction needle (3).

3. The tibial transverse bone transport device according to claim 1, characterized in that: The top of the vertical rod (4) is arranged in a cross shape, and a plurality of slots (21) evenly distributed in the up-down direction are respectively provided on the front and rear sides of the vertical rod (4). The shield (6) comprises an arc-shaped shield body (601) and two sliding plates (602). The two sliding plates (602) are respectively fixed on two sides of the bottom of the shield body (601), and the sliding plates (602) are slidably connected to the sliding slots. The sliding plates (602) can be inserted into the corresponding slots (21).

4. The tibial transverse bone transport device according to claim 3, characterized in that: The vertical rod (4) is provided with a clearance groove (22), the clearance groove (22) is connected with a plurality of slots (21), a push rod (23) is slidably connected in the clearance groove (22), one side of the top of the push rod (23) can be located in the plurality of slots (21), a plug (24) is fixed to the bottom of the push rod (23), a plurality of V-shaped grooves evenly distributed along the up-down direction are provided in the second traction needle (5), the plug (24) can be inserted into the corresponding V-shaped grooves, one side of the push rod (23) is connected to the vertical rod (4) via a spring, one side of the sliding plate (602) is provided with a chamfer, and the chamfer of the sliding plate (602) can contact one side of the top of the push rod (23).

5. The tibial transverse bone transport device according to claim 1, characterized in that: The button (17) is provided with a vertical slot, and the shielding plate (26) is slidably connected to the vertical slot.

6. The tibial transverse bone transport device according to claim 3, characterized in that: The opposite sides of the two covers (601) are in contact with each other. Semicircular holes are respectively provided on the opposite sides of the two covers (601). The two semicircular holes can be assembled into a circular hole (28). The circular hole (28) is located above the button (17). A positioning bolt (29) is threadedly connected to the cover (601). The bottom end of the positioning bolt (29) can contact the upper side of the external fixing frame (1).

7. The tibial transverse bone transport device according to claim 1, characterized in that: The lower surface of the vertical block (14) is an inclined surface which is lower on the left and higher on the right. The lower surface of the vertical block (14) can contact the inclined surface of the corresponding inclined groove (15). A V-shaped slope is provided between two adjacent grooves (16) on the lower side of the fixing ring (7).

8. The tibial transverse bone transport device according to claim 1, characterized in that: A connecting seat (30) is fixed on both sides of the movable seat (2), a rotating plate (31) is hinged on the connecting seat (30) via a rotating shaft, and both ends of the rotating shaft are fixedly connected to the connecting seat (30) via a torsion spring (32), and two oppositely arranged circular plates (33) are fixed on the lower side of the middle of the external fixing frame (1), and a plurality of V-shaped buckle grooves (34) evenly distributed in the up-down direction are opened on one side of the circular plate (33), one end of the rotating plate (31) can be inserted into the buckle groove (34), and the rotating plate (31) can extend into the hole on the circular plate (33).

9. The tibial transverse bone transport device according to claim 8, characterized in that: The rotating plate (31) comprises a rotating plate (311) and an inserting plate (312). The inserting plate (312) is detachably connected to the rotating plate (311) by sliding. One side of the inserting plate (312) can be inserted into the buckle groove (34). A knob (35) is threadedly connected to the rotating plate (311). One end of the knob (35) can abut against the surface of the inserting plate (312).

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