External fixation bracket for orthopedics

Abstract

The present invention discloses an orthopedic external fixator, which relates to the technical field of medical devices, including a connecting ring, an adjustment mechanism and a Kirschner wire, wherein two connecting rings are arranged between the two adjustment mechanisms, and each adjustment mechanism includes: an extension rod mechanism; a lateral adjustment mechanism, wherein two lateral adjustment mechanisms are arranged at both ends of the extension rod mechanism, and the two lateral adjustment mechanisms are connected by a Kirschner wire; a rotational quick adjustment mechanism, wherein one end of the extension rod mechanism is provided with a rotational quick adjustment mechanism, and the lateral adjustment mechanism at one end of the extension rod mechanism is connected to the rotational quick adjustment mechanism, and the rotational quick adjustment mechanism is connected to one end of one of the connecting rings. The present application can realize the reduction and alignment of the bones at both ends of the fracture, and can realize the rotation of the bones, so that the angle of the bones can be adjusted, thereby correcting the deformity of the bones; secondly, the orthopedic external fixator of the present invention has strong stability, is easy to operate, and can realize rapid operation.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an external fixation bracket for orthopedics. Background Art

[0002] Traditional external fixation usually uses splints or plaster to fix fractures outside the skin. Because there are soft tissues such as muscles, blood vessels, and nerves between the splint or plaster and the fracture, there is room for movement at the fracture ends, making it difficult to achieve anatomical alignment. As the swelling caused by the trauma subsides and the muscle disuse atrophy caused by the inability of the affected limb to move effectively, the loosening of the external fixation is aggravated, which can easily cause the fracture to heal abnormally, delayed healing, or serious consequences of nonunion.

[0003] Traditional circular external fixators can fix, lengthen, and migrate bones well, and can easily correct angulation and malalignment deformities. However, traditional circular external fixators are very troublesome to correct rotational deformities, the operation steps are relatively cumbersome, and they cannot be operated quickly. Summary of the invention

[0004] The purpose of the present invention is to provide an orthopedic external fixator to solve the above technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An orthopedic external fixator comprises a connecting ring, an adjustment mechanism and a Kirschner wire, wherein two connecting rings are arranged between the two adjustment mechanisms, one end of each connecting ring is respectively connected to one of the adjustment mechanisms, wherein each of the adjustment mechanisms comprises:

[0007] Extension rod mechanism;

[0008] A lateral adjustment mechanism, wherein two lateral adjustment mechanisms are provided at both ends of the extension rod mechanism, and the extension rod mechanism is used to adjust the distance between the two lateral adjustment mechanisms, and the two lateral adjustment mechanisms facing each other on the two extension rod mechanisms are connected by a Kirschner wire;

[0009] A rotating quick adjustment mechanism, wherein one end of the extension rod mechanism is provided with the rotating quick adjustment mechanism, and the lateral adjustment mechanism located at one end of the extension rod mechanism is connected to the rotating quick adjustment mechanism, and the rotating quick adjustment mechanism is connected to one end of one of the connecting rings.

[0010] Preferably, it further comprises a connecting rod and a first fixing clamp, wherein the connecting rod is arranged between the two connecting rings, and two ends of the connecting rod are connected to the two connecting rings via two first fixing clamps.

[0011] As a further preference, it further comprises two de-angle adjustment mechanisms, and the two de-angle adjustment mechanisms are slidably disposed on the connecting rod.

[0012] Preferably, each of the lateral adjustment mechanisms comprises:

[0013] Kirschner wire connector;

[0014] A Kirschner wire pressure plate, wherein the Kirschner wire pressure plate is fixed to the Kirschner wire connecting seat via a nut;

[0015] A Kirschner wire supporting roller is arranged between the Kirschner wire pressing plate and the Kirschner wire connecting seat.

[0016] As a further preference, it further includes a first spring pressure cover and a first spring, wherein the first spring pressure cover is located between the nut and the Kirschner pin pressure plate, and the first spring is provided between the first spring pressure cover and the Kirschner pin pressure plate.

[0017] As a further preference, each of the de-angling adjustment mechanisms comprises:

[0018] a second fixing clip connected to the connecting rod;

[0019] A universal fixing clamp, one end of which is connected to the second fixing clamp;

[0020] A connecting rod, the other end of the universal fixing clamp is provided with the connecting rod;

[0021] A third fixing clip, two third fixing clips are provided at both ends of the connecting rod;

[0022] A threaded nail, each of the third fixing clips is respectively provided with a threaded nail.

[0023] As a further preference, the universal fixing clamp comprises:

[0024] A universal ball head rod, one end of which is connected to the second fixing clamp;

[0025] A ball head ring, wherein the other end of the universal ball head rod has a universal ball head, and the universal ball head is arranged in the ball head ring;

[0026] A fixing clamp bottom plate, one end of which is disposed in the ball head ring;

[0027] A ball bowl, wherein the ball bowl is disposed in the ball head ring, and one end of the ball bowl abuts against the universal ball head, and the other end of the ball bowl abuts against the bottom plate of the fixing clamp;

[0028] A second spring, the ball bowl is provided with the second spring, and one end of the second spring extends out of the ball bowl and is connected to the bottom plate of the fixing clamp;

[0029] A fixed clamping plate, wherein the fixed clamping plate is connected to the fixed clamping base plate through a first bolt, a clamping groove is formed between the fixed clamping plate and the fixed clamping base plate, and the connecting rod is arranged in the clamping groove;

[0030] A second spring pressure cover, the second spring pressure cover is provided between the fixed clamping plate and the first bolt;

[0031] A third spring is provided between the second spring pressure cover and the fixed clamping plate.

[0032] Preferably, the rotation quick adjustment mechanism comprises:

[0033] A rotating mechanism bracket, the rotating mechanism bracket is connected to one end of the extension rod mechanism;

[0034] A slider, the slider being slidably fixed on the rotating mechanism bracket;

[0035] A guide rod, through which the slider is connected to the rotating mechanism bracket;

[0036] A rack, the rack being fixed on the rotating mechanism bracket and being located between the slider and the rotating mechanism bracket;

[0037] A gear, the gear being disposed in the slider and meshing with the rack;

[0038] A gear fixing mechanism, wherein the gear is fixed in the sliding block through the gear fixing mechanism.

[0039] As a further preference, the gear fixing mechanism comprises:

[0040] A gear shaft, wherein the slider is provided with a gear mounting hole, and the gear is fixed in the gear mounting hole through the gear shaft;

[0041] A first end cover, one end of the gear shaft is provided with the first end cover;

[0042] A second end cover, the other end of the gear shaft is provided with the second end cover, and the gear is located between the first end cover and the second end cover;

[0043] A wave spring, wherein the wave spring is located between the first end cover and the gear;

[0044] A wave retaining spring is also provided at the other end of the gear shaft, and the wave retaining spring is used to fix the second end cover in the gear mounting hole.

[0045] The above technical solution has the following advantages or beneficial effects:

[0046] The orthopedic external fixator of the present invention can realize the reduction and alignment of the bones at both ends of the fracture, and can realize the rotation of the bones, so that the angle of the bones can be adjusted, thereby correcting the deformity of the bones; secondly, the orthopedic external fixator of the present invention has strong stability, is easy to operate, and can realize rapid operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the orthopedic external fixator in the present invention;

[0048] Figure 2 It is a structural schematic diagram of the adjustment mechanism in the present invention;

[0049] Figure 3 It is a schematic diagram of the structure of the connecting ring in the present invention;

[0050] Figure 4 It is a structural schematic diagram of the lateral adjustment mechanism in the present invention;

[0051] Figure 5 It is a schematic diagram of the structure of the universal fixing clamp in the present invention;

[0052] Figure 6 It is a schematic diagram of the internal structure of the universal fixing clamp in the present invention;

[0053] Figure 7 is a front view of the rotary quick adjustment mechanism of the present invention;

[0054] Figure 8 yes Figure 7 AA section view in the figure;

[0055] Fig. 9 It is an exploded schematic diagram of the rotary quick adjustment mechanism in the present invention;

[0056] Fig.10 is a front view of the extension rod mechanism of the present invention;

[0057] Fig.11 It is a right side view of the extension rod mechanism in the present invention;

[0058] Fig.12 yes Fig.10 BB section view in the figure;

[0059] Fig.13 yes Fig.11 CC section view in the figure;

[0060] Fig.14It is a structural schematic diagram of the opening of the opening and closing nut in the extension rod mechanism.

[0061] In the figure: 1, connecting ring; 2, adjustment mechanism; 3, Kirschner wire; 4, extension rod mechanism; 401, quick extension rod sleeve; 402, opening and closing nut seat; 403, opening and closing nut; 404, opening and closing nut locking sleeve; 405, screw; 406, adjustment circle counting spring; 407, adjustment circle counting steel ball; 408, quick extension rod adjustment sleeve; 409, screw; 410, slide groove; 411, scale; 4 12. Indicator limit pin; 413. Opening and closing nut to open spring; 414. Steel wire spring ring for damping; 415. Spring steel wire retaining ring; 5. Lateral adjustment mechanism; 501. Kirschner wire connecting seat; 502. Kirschner wire pressure plate; 503. Nut; 504. First cylindrical pin; 505. Second bolt; 506. Kirschner wire supporting roller; 507. Notch; 508. First spring gland; 509. First spring; 6 , rotating quick adjustment mechanism; 601, rotating mechanism bracket; 602, slider; 603, guide rod; 604, rack; 605, gear; 606, gear shaft; 607, first end cover; 608, second end cover; 609, wave spring; 610, wave retaining ring; 611, third bolt; 7, connecting rod; 8, first fixing clamp; 9, de-angle adjustment mechanism; 901, second fixing clamp; 902, universal fixing clamp; 903, connecting rod; 904, third fixing clamp; 905, threaded nail; 906, universal ball head rod; 907, ball head ring; 908, fixing clamp bottom plate; 909, ball bowl; 910, second spring; 911, fixing clamp pressure plate; 912, clamping groove; 913, second spring pressure cover; 914, first bolt; 915, third spring; 916, elastic retaining ring; 10, connecting block; 11, bone. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Figure 1 It is a schematic diagram of the structure of the orthopedic external fixator in the present invention; Figure 2 It is a structural schematic diagram of the adjustment mechanism in the present invention; Figure 3 It is a schematic diagram of the structure of the connecting ring in the present invention; Figure 4 It is a structural schematic diagram of the lateral adjustment mechanism in the present invention; Figure 5 It is a schematic diagram of the structure of the universal fixing clamp in the present invention; Figure 6 It is a schematic diagram of the internal structure of the universal fixing clamp in the present invention; Figure 7 is a front view of the rotary quick adjustment mechanism of the present invention; Figure 8 yes Figure 7 AA section view in the figure; Fig. 9 It is an exploded schematic diagram of the rotary quick adjustment mechanism in the present invention; Fig.10 is a front view of the extension rod mechanism of the present invention; Fig.11 It is a right side view of the extension rod mechanism in the present invention; Fig.12 yes Fig.10 BB section view in the figure; Fig.13 yes Fig.11 CC section view in the figure; Fig.14 This is a schematic diagram of the structure of the split nut in the extension rod mechanism being opened. Figures 1 to 14 As shown in FIG. 1 , a preferred embodiment is shown, which shows an orthopedic external fixator, comprising a connecting ring 1, an adjustment mechanism 2 and a Kirschner wire 3, wherein two connecting rings 1 are arranged between the two adjustment mechanisms 2, and one end of each connecting ring 1 is connected to an adjustment mechanism 2. In this embodiment, as Figure 3 As shown, the connecting ring 1 is a U-shaped ring structure, and the middle part of the connecting ring 1 is a round rod structure. The two free ends of the connecting ring 1 are connected to the two adjustment mechanisms 2 to form a basic frame. Among them, the two free ends of the connecting ring 1 are polygonal column structures, which can prevent the connecting ring 1 and the adjustment mechanism 2 from twisting and improve the stability between the two adjustment mechanisms 2. The specific structure of the connecting ring 1 can be seen in Figure 3 shown.

[0066] Wherein, each adjustment mechanism 2 comprises:

[0067] Extension rod mechanism 4; the extension rod mechanism 4 in this embodiment can be telescopic and used to adjust the distance between the two side adjustment mechanisms 5, so as to achieve the stretching of the two bones 11 at the fracture ends, and has strong stability, and can achieve the strong fixation required in the initial stage of bone healing 11, avoiding problems such as dislocation, inaccurate angulation, and poor healing caused by poor stability.

[0068] The side adjustment mechanism 5 is provided at both ends of the extension rod mechanism 4, and the extension rod mechanism 4 is used to adjust the distance between the side adjustment mechanisms 5; the side adjustment mechanisms 5 on the two extension rod mechanisms 4 that face each other are connected by a Kirschner wire 3. Figure 1 In the direction shown, the two lateral adjustment mechanisms 5 located at the upper ends of the two extension rod mechanisms 4 are connected by a Kirschner wire 3, and the two lateral adjustment mechanisms 5 located at the lower ends of the two extension rod mechanisms 4 are connected by a Kirschner wire 3. The Kirschner wire 3 in this embodiment is used to fix the bone 11 at the fracture end. The lateral adjustment mechanism 5 located at the upper end of the extension rod mechanism 4 can rotate with the extension rod mechanism 4 to realize the rotation of the bone 11, so that the angle of the bone 11 can be adjusted, and the deformity of the bone 11 can be corrected. The lateral adjustment mechanism 5 located at the lower end of the extension rod mechanism 4 controls the rotation by rotating the quick adjustment mechanism 6.

[0069] The rotating quick adjustment mechanism 6 is provided at one end of the extension rod mechanism 4, and the lateral adjustment mechanism 5 at one end of the extension rod mechanism 4 is connected to the rotating quick adjustment mechanism 6, and the rotating quick adjustment mechanism 6 is connected to one end of one of the connecting rings 1. In this embodiment, Figure 1 In the direction shown, two rotating quick adjustment mechanisms 6 are provided at the lower ends of the two extension rod mechanisms 4, and the two rotating quick adjustment mechanisms 6 are connected by a connecting ring 1. The rotating quick adjustment mechanism 6 can rotate quickly relative to the extension rod mechanism 4 to adjust the angle of the connecting ring 1 and the lateral adjustment mechanism 5.

[0070] Further, as a preferred embodiment, it further comprises a connecting rod 7 and a first fixing clamp 8, wherein the connecting rod 7 is arranged between the two connecting rings 1, and the two ends of the connecting rod 7 are connected to the two connecting rings 1 through two first fixing clamps 8. Figure 1 As shown, both ends of the connecting rod 7 are connected to the middle of the connecting ring 1 .

[0071] Furthermore, as a preferred embodiment, two de-angle adjustment mechanisms 9 are also included, and the two de-angle adjustment mechanisms 9 are slidably arranged on the connecting rod 7. The de-angle adjustment mechanism 9 in this embodiment is used to adjust the de-angle of the bone 11. When the rotating quick adjustment mechanism 6 drives the connecting ring 1 to rotate, the connecting ring 1 will drive the de-angle adjustment mechanism 9 on the connecting rod 7 to rotate, thereby achieving the purpose of de-angle the bone 11.

[0072] Further, as a preferred embodiment, each lateral adjustment mechanism 5 includes:

[0073] Kirschner wire connection seat 501;

[0074] The Kirschner wire pressure plate 502 is fixed on the Kirschner wire connecting seat 501 through a nut 503; in this embodiment, Figure 1 In the direction shown, a connecting block 10 is provided at the upper end of the extension rod mechanism 4, and the Kirschner wire connecting seat 501 at the upper end of the extension rod mechanism 4 is rotatably connected to the connecting block 10 through a first cylindrical pin 504, while the Kirschner wire connecting seat 501 at the lower end of the extension rod mechanism 4 is connected to a slider 602 in the rotation quick adjustment mechanism 6 through the first cylindrical pin 504. Figure 4 As shown, it also includes a second bolt 505, and the second bolt 505 cooperates with the nut 503 to fix the Kirschner wire pressure plate 502 on the Kirschner wire connecting seat 501. The Kirschner wire pressure plate 502 is used to press and fix the Kirschner wire 3 on the Kirschner wire connecting seat 501. In this embodiment, as Fig. 9 As shown, the first cylindrical pin 504 in the rotating quick adjustment mechanism 6 is used to connect with the Kirschner wire connecting seat 501 located at the lower end of the extension rod mechanism 4.

[0075] The Kirschner wire support roller 506 is disposed between the Kirschner wire pressure plate 502 and the Kirschner wire connection seat 501. The Kirschner wire support roller 506 is provided with a notch 507 for clamping the Kirschner wire 3. When the nut 503 is tightened, the Kirschner wire 3 can be fixed in the notch 507. When the nut 503 is loosened, the Kirschner wire 3 can slide in the notch 507. In this embodiment, when the rotation adjustment of the Kirschner wire 3 is required, the nut 503 in one of the lateral adjustment mechanisms 5 at both ends of the Kirschner wire 3 needs to be loosened to remove the interference of the lateral adjustment mechanism 5 on the rotation angle of the Kirschner wire 3. When the rotation adjustment is in place, it should be rechecked whether the lateral fine adjustment is done. After confirming that the lateral adjustment is in place, the nut 503 in the lateral adjustment mechanism 5 is tightened to lock the Kirschner wire 3.

[0076] Further, as a preferred embodiment, it further includes a first spring pressure cover 508 and a first spring 509, wherein the first spring pressure cover 508 is located between the nut 503 and the Kirschner pin pressure plate 502, and the first spring 509 is provided between the first spring pressure cover 508 and the Kirschner pin pressure plate 502. The first spring pressure cover 508 in this embodiment is used to compress and fix the first spring 509, so that one end of the first spring 509 is against the Kirschner pin pressure plate 502, so that the Kirschner pin pressure plate 502 can still maintain a close contact with the Kirschner pin 3 even when the nut 503 is loosened.

[0077] Further, as a preferred embodiment, each de-angling adjustment mechanism 9 includes:

[0078] A second fixing clip 901, the second fixing clip 901 is connected to the connecting rod 7;

[0079] A universal fixing clamp 902, one end of which is connected to the second fixing clamp 901;

[0080] A connecting rod 903 is provided at the other end of the universal fixing clamp 902;

[0081] A third fixing clamp 904, two third fixing clamps 904 are provided at both ends of the connecting rod 903;

[0082] The screw 905 is provided on each third fixing clip 904. In this embodiment, the universal fixing clip 902 is connected to the connecting rod 7 through the second fixing clip 901, the screw 905 is connected to the connecting rod 903 through the third fixing clip 904, and the connecting rod 903 is connected to the universal fixing clip 902, wherein the screw 905 is used to fix the bone 11, such as Figure 1As shown, two de-angle adjustment mechanisms 9 are located at both ends of the fracture, and each de-angle adjustment mechanism 9 is respectively connected to a bone 11. The de-angle adjustment mechanism 9 is used to achieve the purpose of de-angle the bone 11. The position of the connecting rod 903 on the universal fixing clamp 902 in this embodiment can be freely adjusted.

[0083] Further, as a preferred embodiment, the universal fixing clamp 902 includes:

[0084] A universal ball head rod 906, one end of which is connected to the second fixing clamp 901;

[0085] The ball head ring 907, the other end of the universal ball head rod 906 has a universal ball head, and the universal ball head is arranged in the ball head ring 907; in this embodiment, the universal ball head is integrally connected to the universal ball head rod 906, and the set universal ball head can realize the rotation of the ball head ring 907.

[0086] A fixing clamp bottom plate 908, one end of which is disposed in the ball head ring 907;

[0087] The ball bowl 909 is disposed in the ball head ring 907, and one end of the ball bowl 909 abuts against the universal ball head, and the other end of the ball bowl 909 abuts against the fixing clamp bottom plate 908; the ball bowl 909 in this embodiment is used to fix the universal ball head.

[0088] A second spring 910 is provided in the ball bowl 909, and one end of the second spring 910 extends out of the ball bowl 909 and is connected to the fixing clamp bottom plate 908; the second spring 910 is provided to support the ball bowl 909 so that the ball bowl 909 fixes the universal ball head, so that there is a certain damping between the ball bowl 909 and the universal ball head to enhance the slow-changing effect of use.

[0089] A fixed clamping plate 911, the fixed clamping plate 911 is connected to the fixed clamping bottom plate 908 through a first bolt 914, a clamping groove 912 is formed between the fixed clamping plate 911 and the fixed clamping bottom plate 908, and the connecting rod 903 is disposed in the clamping groove 912;

[0090] A second spring pressure cover 913 is provided between the fixed clamping plate 911 and the first bolt 914;

[0091] The third spring 915 is provided between the second spring pressure cover 913 and the fixed clamping plate 911. In this embodiment, the third spring 915 is provided at the outer edge of the first bolt 914, and the first bolt 914 is used to fix the fixed clamping plate 911 on the fixed clamping bottom plate 908, and the fixed clamping plate 911 is used to fix the connecting rod 903 on the fixed clamping bottom plate 908. Figure 6As shown, the clamping groove 912 is used to fix the connecting rod 903. When the first bolt 914 is tightened, the clamping groove 912 can clamp the connecting rod 903; when the first bolt 914 is loosened, the connecting rod 903 can slide in the clamping groove 912 to adjust the position of the connecting rod 903. When the first bolt 914 is loosened, the third spring 915 can keep the fixed clamping plate 911 in a tight state with the connecting rod 903. In this embodiment, Figure 6 As shown, an elastic retaining ring 916 is also provided between the fixing clamp base plate 908 and the ball head ring 907 .

[0092] Further, as a preferred embodiment, the rotation quick adjustment mechanism 6 includes:

[0093] A rotating mechanism bracket 601, the rotating mechanism bracket 601 is connected to one end of the extension rod mechanism 4;

[0094] A slider 602, the slider 602 is slidably fixed on the rotating mechanism bracket 601;

[0095] Guide rod 603, slider 602 is connected to rotating mechanism bracket 601 through guide rod 603;

[0096] The rack 604 is fixed on the rotating mechanism bracket 601, and the rack 604 is located between the slider 602 and the rotating mechanism bracket 601;

[0097] Gear 605, gear 605 is disposed in the slider 602, and gear 605 is meshed with rack 604;

[0098] Gear fixing mechanism, gear 605 is fixed in slider 602 through the gear fixing mechanism. Figure 7-9 As shown, the rotating mechanism bracket 601 includes a first part and a second part, wherein the first part is similar to a ∪-shaped structure, and the second part is a cylindrical structure; the slider 602 and the rack 604 are both arranged inside the first part of the rotating mechanism bracket 601, and the rack 604 is connected to the inner side wall of the first part of the rotating mechanism bracket 601. In this embodiment, the second part of the rotating mechanism bracket 601 is connected to the screw rod 405 in the extension rod mechanism 4 through a third bolt 611. Figure 1 In the direction shown, the free end of the connecting ring 1 located at the lower side is connected to the second part of the rotating mechanism bracket 601.

[0099] Further, as a preferred embodiment, the gear fixing mechanism includes:

[0100] Gear shaft 606, slider 602 is provided with a gear mounting hole, and gear 605 is fixed in the gear mounting hole through gear shaft 606;

[0101] A first end cover 607, one end of the gear shaft 606 is provided with a first end cover 607;

[0102] A second end cover 608, the other end of the gear shaft 606 is provided with a second end cover 608, and the gear 605 is located between the first end cover 607 and the second end cover 608;

[0103] A wave spring 609, the wave spring 609 is located between the first end cover 607 and the gear 605;

[0104] The other end of the gear shaft 606 is also provided with a wave circlip 610, and the wave circlip 610 is used to fix the second end cover 608 in the gear mounting hole. Figure 7-9 As shown, the first end cap 607 and the second end cap 608 are arranged at both ends of the gear shaft 606, and are used to fix the gear shaft 606 in the gear mounting hole, and the other end of the gear shaft 606 extends out of the gear mounting hole, and is used to connect with an external socket wrench, and the socket wrench is used to control the rotation of the gear shaft 606. Under normal conditions, the gear fixing mechanism and the extension rod mechanism 4 cannot rotate. When adjustment is required, first take out the wave clamp 610, and then connect it with the hexagonal head at the other end of the gear shaft 606 through the socket wrench, rotate the socket wrench, and the gear shaft 606 drives the gear 605 to rotate on the rack 604, thereby driving the slider 602 to move in the rotating mechanism bracket 601, and the movement of the slider 602 will drive the lateral adjustment mechanism 5 connected thereto to move, and the lateral adjustment mechanism 5 will drive the Kirschner wire 3 to rotate, so that the Kirschner wire 3 drives the fixed rotation, and the rotation angle of the bone 11 can be accurately and quickly controlled. When not rotating, under the action of the wave spring 609, the positioning toothed disc on the shoulder of the gear shaft 606 is clamped on the end face positioning toothed disc of the second end cover 608. When the gear 605 rotates, the force transmitted by the socket wrench causes the gear 605 to rotate, and the end face positioning toothed disc on the second end cover 608 slides relative to the positioning toothed disc on the shoulder of the gear 605 on the circumference, forcing the gear 605 to move back and forth by compressing the wave spring 609 in the axial direction. After the adjustment is completed, the wave retaining spring 610 is re-fixed in the limiting hole at the other end of the gear shaft 606. At this time, the wave retaining spring 610 limits the axial retraction of the gear 605, so that the positioning toothed disc on the shoulder of the gear 605 and the end face positioning toothed disc on the second end cover 608 are in a locked state. At this time, the gear 605 cannot move, and the slider 602 is locked in the current position.

[0105] The above description is only a preferred embodiment of the present application and does not limit the protection scope and implementation methods of the present application.

[0106] Based on the above preferred embodiments, the present application also has the following preferred implementation modes:

[0107] Further, as a preferred embodiment, the extension rod mechanism 4 is a quick extension rod mechanism 4, and the extension rod mechanism 4 includes:

[0108] Quick extension rod sleeve 401;

[0109] An opening and closing nut seat 402, one end of which is connected to one end of a quick extension rod sleeve 401;

[0110] A split nut 403, the other end of the split nut seat 402 is provided with a split nut 403;

[0111] The slidable nut locking sleeve 404 is disposed on the outer edges of the slidable nut 403 and the slidable nut seat 402;

[0112] The screw rod 405 passes through the split nut 403 and the split nut seat 402 in sequence and extends into the quick extension rod sleeve 401;

[0113] The adjusting coil counting spring 406 is provided with a mounting hole at one end of the split nut seat 402, and the adjusting coil counting spring 406 is arranged in the mounting hole;

[0114] The adjusting circle counting steel ball 407, a groove is provided on the end surface of one end of the quick extension rod sleeve 401, and the adjusting circle counting spring 406 is connected with the adjusting circle counting steel ball 407 and the adjusting circle counting steel ball 407 is pressed against the groove. Figure 10-14 As shown, there is no thread or screw thread on the inner wall of the quick extension rod sleeve 401, the nut seat 402 is fixed to one end of the quick extension rod sleeve 401 through the quick extension rod adjustment sleeve 408, and the nut 403 is fixed to the screw rod 405 and the nut seat 402 through the nut locking sleeve 404. The screw thread is provided on the outer peripheral wall of the screw rod 405, and the nut thread is provided on the inner wall of the nut 403. When the nut 403 is locked, the nut thread is locked with the screw thread. When the nut 403 is in the open state, the nut thread is separated from the screw thread, and the nut 403 is still fixed on the nut seat 402 under the action of the nut locking sleeve 404.

[0115] Further, as a preferred embodiment, the extension rod mechanism 4 also includes a quick extension rod adjustment sleeve 408, and the quick extension rod adjustment sleeve 408 is provided at the outer edge of the connection between the quick extension rod sleeve 401 and the opening and closing nut seat 402. The adjustment circle counting steel ball 407 in this embodiment cooperates with the adjustment circle counting spring 406 to record the number of rotations of the quick extension rod adjustment sleeve 408, so as to achieve fine adjustment of the screw rod 405.

[0116] Further, as a preferred embodiment, the extension rod mechanism 4 further includes a screw 409, and the quick extension rod adjustment sleeve 408 is fixed to the outer edge of the connection between the quick extension rod sleeve 401 and the split nut seat 402 by the screw 409. The screw 409 in this embodiment is a countersunk screw, which is used to connect the quick extension rod adjustment sleeve 408 to the quick extension rod sleeve 401.

[0117] Further, as a preferred embodiment, a slide groove 410 is provided on one side of the quick extension rod sleeve 401 , and the slide groove 410 is arranged along the axial direction of the quick extension rod sleeve 401 .

[0118] Further, as a preferred embodiment, a plurality of scales 411 are provided on one side of the quick extension rod sleeve 401 , and the plurality of scales 411 are provided on one side of the slide groove 410 , and the plurality of scales 411 are provided along the axial direction of the quick extension rod sleeve 401 .

[0119] Further, as a preferred embodiment, the extension rod mechanism 4 further includes an indicating stop pin 412, and an indicating stop pin 412 is provided at one end of the screw rod 405, and the indicating stop pin 412 is located in the slide groove 410. The indicating stop pin 412 in this embodiment is slidably disposed in the slide groove 410, and under the action of the scale 411, the sliding distance of the indicating stop pin 412 can be accurately measured, thereby judging the sliding distance of the screw rod 405 in the quick extension rod sleeve 401, and the distance between the two side adjustment mechanisms 5 can be quickly and accurately adjusted.

[0120] Further, as a preferred embodiment, the split nut 403 is a two-petal nut, and the two-petal nut includes a first petal nut and a second petal nut, and both the first petal nut and the second petal nut are fixed to the screw 405 by the split nut locking sleeve 404.

[0121] Furthermore, as a preferred embodiment, the nut opening spring 413 is also included, and the inner walls of the first split nut and the second split nut are respectively provided with first clamping grooves 912, and the two first clamping grooves 912 are connected to form a first installation groove, and the nut opening spring 413 is arranged in the first installation groove. The nut opening spring 413 in this embodiment is arranged between the first split nut and the second split nut, and is used to open the first split nut and the second split nut to realize the opening action of the nut 403.

[0122] Further, as a preferred embodiment, it also includes a damping wire spring ring 414, the outer edge of the split nut seat 402 is provided with a second installation groove, the damping wire spring ring 414 is arranged in the second installation groove, and the outer side wall of the damping wire spring ring 414 abuts against the inner side wall of the split nut locking sleeve 404. In this embodiment, the damping wire spring ring 414 can prevent the split nut locking sleeve 404 from accidentally falling off.

[0123] Furthermore, as a preferred embodiment, it also includes a spring steel wire retaining ring 415, the outer edge of the quick extension rod sleeve 401 is provided with a third installation groove, the spring steel wire retaining ring 415 is arranged in the third installation groove, and the outer side wall of the spring steel wire retaining ring 415 is against the inner side wall of the quick extension rod adjustment sleeve 408.

[0124] The principle of the extension rod mechanism 4 is as follows:

[0125] When rapid telescopic adjustment is required, the resistance of the damping wire spring coil 414 is overcome, and the opening and closing nut locking sleeve 404 is pulled downward. Under the action of the opening and closing nut support spring 413, the first petal nut and the second petal nut are ejected to both sides, so that the nut thread and the screw thread are disengaged. At this time, the screw 405 can be quickly telescopically adjusted in the rapid extension rod sleeve 401.

[0126] When fine telescopic adjustment is required, the opening and closing nut locking sleeve 404 is pulled upward so that the opening and closing nut 403 is in a closed state. At this time, the damping wire spring ring 414 pops open to prevent the opening and closing nut locking sleeve 404 from accidentally falling off. In this state, the quick extension rod adjustment sleeve 408 is rotated to achieve fine adjustment of the extension rod mechanism 4; during the fine adjustment process, at the starting position, the adjustment circle counting steel ball 407 is pushed into the groove under the action of the adjustment circle counting spring 406. When the quick extension rod adjustment sleeve 408 is rotated, the adjustment circle counting steel ball 407 is pushed out of the groove. For every rotation of the quick extension rod adjustment sleeve 408, the adjustment circle counting steel ball 407 will enter and exit the groove once, which will have an obvious hand feel and is convenient for counting. For every rotation of the quick extension rod adjustment sleeve 408, the pitch is adjusted to 1mm, and the axial length of the extension rod mechanism 4 changes to 1mm.

[0127] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An orthopedic external fixator, characterized in that: It comprises a connecting ring, an adjustment mechanism and a Kirschner wire, wherein two connecting rings are arranged between the two adjustment mechanisms, one end of each connecting ring is respectively connected to one of the adjustment mechanisms, wherein each of the adjustment mechanisms comprises: Extension rod mechanism; A lateral adjustment mechanism, wherein two lateral adjustment mechanisms are provided at both ends of the extension rod mechanism, and the extension rod mechanism is used to adjust the distance between the two lateral adjustment mechanisms, and the two lateral adjustment mechanisms facing each other on the two extension rod mechanisms are connected by a Kirschner wire; A rotating quick adjustment mechanism, wherein one end of the extension rod mechanism is provided with the rotating quick adjustment mechanism, and the lateral adjustment mechanism located at one end of the extension rod mechanism is connected to the rotating quick adjustment mechanism, and the rotating quick adjustment mechanism is connected to one end of one of the connecting rings; Wherein, it also includes two de-angle adjustment mechanisms, and the two de-angle adjustment mechanisms are slidably arranged on the connecting rod; Wherein, each of the lateral adjustment mechanisms comprises: Kirschner wire connector; A Kirschner wire pressure plate, wherein the Kirschner wire pressure plate is fixed to the Kirschner wire connecting seat via a nut; A Kirschner wire supporting roller, wherein the Kirschner wire supporting roller is arranged between the Kirschner wire pressing plate and the Kirschner wire connecting seat; Wherein, it also includes a first spring pressure cover and a first spring, the first spring pressure cover is located between the nut and the Kirschner pin pressure plate, and the first spring is arranged between the first spring pressure cover and the Kirschner pin pressure plate; Wherein, each of the de-angulation adjustment mechanisms comprises: a second fixing clip connected to the connecting rod; A universal fixing clamp, one end of which is connected to the second fixing clamp; A connecting rod, the other end of the universal fixing clamp is provided with the connecting rod; A third fixing clip, two third fixing clips are provided at both ends of the connecting rod; Threaded nails, each of the third fixing clips is provided with a threaded nail; Wherein, the universal fixing clamp comprises: A universal ball head rod, one end of which is connected to the second fixing clamp; A ball head ring, wherein the other end of the universal ball head rod has a universal ball head, and the universal ball head is arranged in the ball head ring; A fixing clamp bottom plate, one end of which is disposed in the ball head ring; A ball bowl, wherein the ball bowl is disposed in the ball head ring, and one end of the ball bowl abuts against the universal ball head, and the other end of the ball bowl abuts against the bottom plate of the fixing clamp; A second spring, the ball bowl is provided with the second spring, and one end of the second spring extends out of the ball bowl and is connected to the bottom plate of the fixing clamp; A fixed clamping plate, wherein the fixed clamping plate is connected to the fixed clamping base plate through a first bolt, a clamping groove is formed between the fixed clamping plate and the fixed clamping base plate, and the connecting rod is arranged in the clamping groove; A second spring pressure cover, the second spring pressure cover is provided between the fixed clamping plate and the first bolt; A third spring, the third spring is provided between the second spring pressure cover and the fixed clamping plate; Wherein, the rotation quick adjustment mechanism comprises: A rotating mechanism bracket, the rotating mechanism bracket is connected to one end of the extension rod mechanism; A slider, the slider being slidably fixed on the rotating mechanism bracket; A guide rod, through which the slider is connected to the rotating mechanism bracket; A rack, the rack being fixed on the rotating mechanism bracket and being located between the slider and the rotating mechanism bracket; A gear, the gear being disposed in the slider and meshing with the rack; A gear fixing mechanism, wherein the gear is fixed in the slider by the gear fixing mechanism; Wherein, the gear fixing mechanism comprises: A gear shaft, wherein the slider is provided with a gear mounting hole, and the gear is fixed in the gear mounting hole through the gear shaft; A first end cover, one end of the gear shaft is provided with the first end cover; A second end cover, the other end of the gear shaft is provided with the second end cover, and the gear is located between the first end cover and the second end cover; A wave spring, wherein the wave spring is located between the first end cover and the gear; A wave retaining spring is also provided at the other end of the gear shaft, and the wave retaining spring is used to fix the second end cover in the gear mounting hole.

2. The orthopedic external fixator according to claim 1, characterized in that: It also includes a connecting rod and a first fixing clamp, wherein the connecting rod is arranged between the two connecting rings, and two ends of the connecting rod are connected to the two connecting rings through two first fixing clamps.

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