CN216257348U

CN216257348U - External fixing support for orthopedics

Info

Publication number: CN216257348U
Application number: CN202120524584.8U
Authority: CN
Inventors: 盛加根; 盛美贞; 张长青
Original assignee: Shanghai Sixth Peoples Hospital
Current assignee: Shanghai Sixth Peoples Hospital
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2022-04-12
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses an external fixing bracket for orthopedics department, which relates to the technical field of medical instruments and comprises connecting rings, adjusting mechanisms and a Kirschner wire, wherein two connecting rings are arranged between the two adjusting mechanisms, and each adjusting mechanism comprises: an extension rod mechanism; the two sides of the extension rod mechanism are provided with two side adjusting mechanisms which are connected through a Kirschner wire; the rotary quick adjusting mechanism is arranged at one end of the extension rod mechanism, the side adjusting mechanism located at one end of the extension rod mechanism is connected with the rotary quick adjusting mechanism, and the rotary quick adjusting mechanism is connected with one end of one connecting ring. The bone restoration device can realize restoration and alignment of bones at two ends of a fracture part, can realize rotation of the bones, and can adjust the angles of the bones, so that deformities of the bones can be corrected; secondly, the external fixation bracket for orthopedics department has stronger stability, is convenient to operate and can realize quick operation.

Description

External fixing support for orthopedics

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an external fixing bracket for orthopedics.

Background

In the traditional external fixation, a splint or plaster is usually adopted to fix the fracture outside the skin, and because the splint or plaster is separated from the fracture by soft tissues such as muscles, blood vessels, nerves and the like, the fracture end has a room for movement, so that the anatomical contraposition alignment is difficult to achieve; the muscle disuse atrophy caused by the subsidence of swelling and ineffective movement of the affected limb caused by trauma aggravates the external fixation loosening, thereby easily causing the fracture to cause the serious consequences of abnormal healing, delayed healing or bone nonunion.

Traditional annular external fixator can be fine fix, prolong, move the bone to can conveniently correct angulation and counterpoint bad deformity, but traditional annular external fixator is very troublesome comparatively trouble to the correction of pairing rotation deformity, and operating procedure is comparatively loaded down with trivial details, can't realize quick operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an external fixing bracket for orthopedics department, which is used for solving the technical problem.

The technical scheme adopted by the utility model is as follows:

the utility model provides an external fixation support for orthopedics, includes go-between, guiding mechanism and kirschner wire, wherein, two be equipped with two between the guiding mechanism the go-between, each the one end of go-between respectively with one guiding mechanism connects, wherein, each guiding mechanism all includes:

an extension rod mechanism;

the two ends of the extension rod mechanism are provided with two side adjusting mechanisms, the extension rod mechanism is used for adjusting the distance between the two side adjusting mechanisms, and the two opposite side adjusting mechanisms on the two extension rod mechanisms are connected through the Kirschner wire;

the rotary quick adjusting mechanism is arranged at one end of the extension rod mechanism, the side adjusting mechanism located at one end of the extension rod mechanism is connected with the rotary quick adjusting mechanism, and the rotary quick adjusting mechanism is connected with one end of the connecting ring.

Preferably, the connecting device further comprises a connecting rod and first fixing clamps, wherein the connecting rod is arranged between the two connecting rings, and two ends of the connecting rod are connected with the two connecting rings through the two first fixing clamps.

Further preferably, the angle-reducing mechanism further comprises two angle-reducing adjusting mechanisms, and the two angle-reducing adjusting mechanisms are slidably arranged on the connecting rod.

Preferably, each of the side adjustment mechanisms includes:

a Kirschner wire connecting seat;

the Kirschner wire pressing plate is fixed on the Kirschner wire connecting seat through a nut;

the kirschner wire supporting idler wheel is arranged between the kirschner wire pressing plate and the kirschner wire connecting seat.

As a further optimization, the spring pressing device further comprises a first spring pressing cover and a first spring, wherein the first spring pressing cover is located between the nut and the kirschner wire pressing plate, and the first spring is arranged between the first spring pressing cover and the kirschner wire pressing plate.

As a further preference, each of the de-angulation adjustment mechanisms comprises:

the second fixing clamp is connected with the connecting rod;

one end of the universal fixing clamp is connected with the second fixing clamp;

the other end of the universal fixing clamp is provided with the connecting rod;

two ends of the connecting rod are provided with two third fixing clamps;

and each third fixing clamp is provided with one threaded nail.

As a further preferred aspect, the universal fixing clip includes:

one end of the universal ball head rod is connected with the second fixing clamp;

the other end of the universal ball head rod is provided with a universal ball head, and the universal ball head is arranged in the ball head ring;

one end of the fixing clamp bottom plate is arranged in the ball head ring;

the ball bowl is arranged in the ball head ring, one end of the ball bowl is abutted against the universal ball head, and the other end of the ball bowl is abutted against the fixing clamp bottom plate;

the second spring is arranged in the ball bowl, and one end of the second spring extends out of the ball bowl and is connected with the fixed clamp bottom plate;

the fixed clamping pressure plate is connected with the fixed clamping bottom plate through a first bolt, a clamping groove is formed between the fixed clamping pressure plate and the fixed clamping bottom plate, and the connecting rod is arranged in the clamping groove;

the second spring gland is arranged between the fixed clamping pressure plate and the first bolt;

and the third spring is arranged between the second spring gland and the fixed clamping pressure plate.

Preferably, the rotary quick adjustment mechanism includes:

the rotating mechanism support is connected with one end of the extension rod mechanism;

the sliding block is slidably fixed on the rotating mechanism bracket;

the sliding block is connected with the rotating mechanism bracket through the guide rod;

the rack is fixed on the rotary mechanism bracket and is positioned between the sliding block and the rotary mechanism bracket;

the gear is arranged in the sliding block and is meshed with the rack;

and the gear is fixed in the sliding block through the gear fixing mechanism.

As a further preferred aspect, the gear fixing mechanism includes:

the sliding block is provided with a gear mounting hole, and the gear is fixed in the gear mounting hole through the gear shaft;

the first end cover is arranged at one end of the gear shaft;

the other end of the gear shaft is provided with the second end cover, and the gear is positioned between the first end cover and the second end cover;

a wave spring located between the first end cap and the gear;

the other end of the gear shaft is further provided with the waveform clamping spring, and the waveform clamping spring is used for fixing the second end cover in the gear mounting hole.

The technical scheme has the following advantages or beneficial effects:

the external fixation bracket for orthopedics can realize the restoration and the alignment of bones at two ends of a fracture part, can realize the rotation of the bones, and can adjust the angles of the bones, so that the deformity of the bones can be corrected; secondly, the external fixation bracket for orthopedics department has stronger stability, is convenient to operate and can realize quick operation.

Drawings

FIG. 1 is a schematic structural view of an orthopedic external fixation support according to the present invention;

FIG. 2 is a schematic view of the adjustment mechanism of the present invention;

FIG. 3 is a schematic view of the attachment ring in the present invention;

FIG. 4 is a schematic view of the side adjustment mechanism of the present invention;

FIG. 5 is a schematic view of the construction of the gimbal mounting clip of the present invention;

FIG. 6 is a schematic view of the internal structure of the gimbal mounting clip of the present invention;

FIG. 7 is a front view of the rotary quick adjustment mechanism of the present invention;

FIG. 8 is a sectional view taken along line A-A of FIG. 7;

FIG. 9 is an exploded view of the rotary quick adjustment mechanism of the present invention;

FIG. 10 is a front view of an extender rod mechanism of the present invention;

FIG. 11 is a right side view of the extension rod mechanism of the present invention;

FIG. 12 is a sectional view taken along line B-B of FIG. 10;

FIG. 13 is a cross-sectional view taken along line C-C of FIG. 11;

fig. 14 is a schematic view of the split nut of the extension rod mechanism being expanded.

In the figure: 1. a connecting ring; 2. an adjustment mechanism; 3. a Kirschner wire; 4. an extension rod mechanism; 401. a quick extension rod sleeve; 402. opening and closing the nut seat; 403. opening and closing the nut; 404. a split nut locking sleeve; 405. a screw; 406. adjusting a coil count spring; 407. adjusting a steel ball for counting the number of turns; 408. a quick extension rod adjusting sleeve; 409. a screw; 410. a chute; 411. calibration; 412. indicating a limit pin; 413. the split nut expands the spring; 414. a damping wire spring ring; 415. a spring wire retainer ring; 5. a lateral adjusting mechanism; 501. a Kirschner wire connecting seat; 502. pressing a kirschner wire plate; 503. a nut; 504. a first cylindrical pin; 505. a second bolt; 506. supporting the roller by the Kirschner wire; 507. a notch; 508. a first spring gland; 509. a first spring; 6. rotating the quick adjustment mechanism; 601. rotating the mechanism support; 602. a slider; 603. a guide bar; 604. a rack; 605. a gear; 606. a gear shaft; 607. a first end cap; 608. a second end cap; 609. a wave spring; 610. a wave-shaped clamp spring; 611. a third bolt; 7. a connecting rod; 8. a first fixing clip; 9. a de-angulation adjustment mechanism; 901. a second fixing clip; 902. a universal fixing clip; 903. a connecting rod; 904. a third fixing clip; 905. a threaded nail; 906. a universal ball-head stem; 907. a ball head ring; 908. a fixation clamp base plate; 909. a ball bowl; 910. a second spring; 911. fixing the clamping plate; 912. a clamping groove; 913. a second spring gland; 914. a first bolt; 915. a third spring; 916. a circlip; 10. connecting blocks; 11. bone.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

FIG. 1 is a schematic structural view of an orthopedic external fixation support according to the present invention; FIG. 2 is a schematic view of the adjustment mechanism of the present invention; FIG. 3 is a schematic view of the attachment ring in the present invention;

FIG. 4 is a schematic view of the side adjustment mechanism of the present invention; FIG. 5 is a schematic view of the construction of the gimbal mounting clip of the present invention; FIG. 6 is a schematic view of the internal structure of the gimbal mounting clip of the present invention; FIG. 7 is a front view of the rotary quick adjustment mechanism of the present invention; FIG. 8 is a sectional view taken along line A-A of FIG. 7; FIG. 9 is an exploded view of the rotary quick adjustment mechanism of the present invention; FIG. 10 is a front view of an extender rod mechanism of the present invention; FIG. 11 is a right side view of the extension rod mechanism of the present invention; FIG. 12 is a sectional view taken along line B-B of FIG. 10; FIG. 13 is a cross-sectional view taken along line C-C of FIG. 11; fig. 14 is a schematic view of the split nut of the extension rod mechanism being expanded. Referring to fig. 1 to 14, a preferred embodiment is shown, which shows an external fixation frame for orthopedics department, comprising a connection ring 1, an adjustment mechanism 2 and a kirschner wire 3, wherein two connection rings 1 are arranged between the two adjustment mechanisms 2, and one end of each connection ring 1 is connected with one adjustment mechanism 2. In this embodiment, as shown in fig. 3, the connection ring 1 is in a U-shaped ring structure, the middle portion of the connection ring 1 is in a round bar structure, and two free ends of the connection ring 1 are connected with two adjusting mechanisms 2 to form a basic frame. The two free ends of the connecting ring 1 are polygonal columnar structures, so that the connecting ring 1 and the adjusting mechanisms 2 can be prevented from twisting, the stability between the two adjusting mechanisms 2 can be improved, and the specific structure of the connecting ring 1 can be seen in fig. 3.

Wherein each adjusting mechanism 2 comprises:

an extension rod mechanism 4; extension rod mechanism 4 in this embodiment can realize stretching out and drawing back for the distance of adjustment both sides side guiding mechanism 5 can realize the drawing of two bones 11 at fracture end, and has stronger stability, can reach the required firm fixed of 11 early stages of healing of bone, avoids because dislocation, angulation that the steady difference caused are inaccurate, the bad scheduling problem of healing.

The two ends of the extension rod mechanism 4 are provided with two side adjusting mechanisms 5, and the extension rod mechanism 4 is used for adjusting the distance between the two side adjusting mechanisms 5; the opposite two lateral side adjusting mechanisms 5 on the two extension rod mechanisms 4 are connected through a Kirschner wire 3. As shown in fig. 1, the two lateral adjustment mechanisms 5 located at the upper ends of the two extension rod mechanisms 4 are connected to each other 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 to each other by a kirschner wire 3. The k-wire 3 in this embodiment is used to fix the bone 11 at the fracture end. The side adjusting mechanism 5 positioned at the upper end of the extension rod mechanism 4 can rotate with the extension rod mechanism 4, so as to realize the rotation of the bone 11, adjust the angle of the bone 11 and correct the deformity of the bone 11. And the side adjusting mechanism 5 at the lower end of the extension rod mechanism 4 is controlled to rotate by the rotating quick adjusting mechanism 6.

The rotary quick adjusting mechanism 6 is arranged at one end of the extension rod mechanism 4, the side adjusting mechanism 5 located at one end of the extension rod mechanism 4 is connected with the rotary quick adjusting mechanism 6, and the rotary quick adjusting mechanism 6 is connected with one end of one of the connecting rings 1. In this embodiment, as shown in fig. 1, two rotary quick adjusting mechanisms 6 are provided at the lower ends of two extension rod mechanisms 4, and the two rotary quick adjusting mechanisms 6 are connected by a connecting ring 1. The rotary quick adjusting mechanism 6 can rotate quickly relative to the extension rod mechanism 4, so that the angles of the connecting ring 1 and the side adjusting mechanism 5 can be adjusted.

Further, as a preferred embodiment, the device further comprises a connecting rod 7 and a first fixing clamp 8, wherein the connecting rod 7 is disposed between the two connecting rings 1, and two ends of the connecting rod 7 are connected with the two connecting rings 1 through the two first fixing clamps 8. In this embodiment, as shown in fig. 1, both ends of the connecting rod 7 are connected to the middle of the connecting ring 1.

Further, as a preferred embodiment, two angle-removing adjusting mechanisms 9 are further included, and the two angle-removing adjusting mechanisms 9 are slidably disposed on the connecting rod 7. The angle-removing adjusting mechanism 9 in this embodiment is used for adjusting the angle-removing of the bone 11, and when the quick adjusting mechanism 6 is rotated to rotate the connecting ring 1, the connecting ring 1 will drive the angle-removing adjusting mechanism 9 on the connecting rod 7 to rotate, so as to achieve the purpose of angle-removing of the bone 11.

Further, as a preferred embodiment, each side adjustment mechanism 5 includes:

a k-wire connection seat 501;

the kirschner wire pressing plate 502 is fixed on the kirschner wire connecting seat 501 through a nut 503; in this embodiment, as shown in fig. 1, a connecting block 10 is disposed at the upper end of the extension rod mechanism 4, the kirschner wire connecting seat 501 at the upper end of the extension rod mechanism 4 is rotatably connected to the connecting block 10 by a first cylindrical pin 504, and the kirschner wire connecting seat 501 at the lower end of the extension rod mechanism 4 is connected to a slide block 602 in the quick rotation adjusting mechanism 6 by the first cylindrical pin 504. As shown in fig. 4, a second bolt 505 is further included, and the second bolt 505 is matched with the nut 503 to fix the k-wire pressing plate 502 on the k-wire connecting seat 501. The kirschner wire pressing plate 502 is used for pressing and fixing the kirschner wire 3 on the kirschner wire connecting seat 501. In this embodiment, as shown in fig. 9, the first cylindrical pin 504 of the rotary quick adjustment mechanism 6 is used to connect with the kirschner wire connection holder 501 at the lower end of the extension rod mechanism 4.

The kirschner wire supporting roller 506, the kirschner wire supporting roller 506 is arranged between the kirschner wire pressing plate 502 and the kirschner wire connecting seat 501. A notch 507 is provided in the k-wire support roller 506 for holding the k-wire 3, and when the nut 503 is pressed, the k-wire 3 is fixed in the notch 507, and when the nut 503 is released, the k-wire 3 slides in the notch 507. In this embodiment, when the rotation adjustment of the k-wire 3 is required, the nuts 503 of one of the side adjusting mechanisms 5 at both ends of the k-wire 3 need to be loosened to release the interference of the side adjusting mechanism 5 with the rotation angle of the k-wire 3, and after the rotation adjustment is completed, whether fine adjustment for removing the side should be checked again, and after the completion of the side adjustment is determined, the nuts 503 of the side adjusting mechanisms 5 are tightened to lock the k-wire 3.

Further, as a preferred embodiment, a first spring gland 508 and a first spring 509 are further included, the first spring gland 508 is located between the nut 503 and the k-wire pressure plate 502, and the first spring 509 is located between the first spring gland 508 and the k-wire pressure plate 502. The first spring cover 508 in this embodiment is used to press and fix the first spring 509, so that one end of the first spring 509 abuts against the k-wire pressing plate 502, and even in a state where the nut 503 is loosened, the k-wire pressing plate 502 can still be kept in a close state with the k-wire 3.

Further, as a preferred embodiment, each of the angulation-removing adjustment mechanisms 9 comprises:

a second fixing clip 901, the second fixing clip 901 is connected with the connecting rod 7;

a universal fixing clip 902, one end of the universal fixing clip 902 being connected to the second fixing clip 901;

a connecting rod 903, wherein the other end of the universal fixing clamp 902 is provided with the connecting rod 903;

two third fixing clamps 904 are arranged at two ends of the connecting rod 903;

a screw 905, and each third fixing clip 904 has a screw 905. 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 for fixing the bone 11, as shown in fig. 1, two angulation removing adjustment mechanisms 9 are located at two ends of the fracture, and each angulation removing adjustment mechanism 9 is connected to a bone 11. The de-angulation adjustment mechanism 9 serves the purpose of achieving de-angulation of the bone 11. The position of the link 903 on the gimbal mounting clip 902 in this embodiment can be freely adjusted.

Further, as a preferred embodiment, the universal mounting clip 902 includes:

a universal ball bar 906, one end of the universal ball bar 906 being connected with the second fixing clip 901;

the other end of the universal ball rod 906 is provided with 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 with the universal ball head rod 906, and the arranged universal ball head can realize the rotation of the ball head ring 907.

A clamp base plate 908, one end of the clamp base plate 908 being disposed within the ball ring 907;

a ball bowl 909, wherein the ball bowl 909 is arranged in the ball head ring 907, 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 base plate 908; the ball bowl 909 in this embodiment is used to secure a universal ball head.

A second spring 910, wherein the second spring 910 is arranged in the ball bowl 909, and one end of the second spring 910 extends out of the ball bowl 909 and is connected with the fixing clip base plate 908; the second spring 910 is provided to support the ball bowl 909 so that the ball bowl 909 secures the universal ball head and so that there is some damping between the ball bowl 909 and the universal ball head to enhance the ramping effect of the use.

The fixing clamp plate 911 is connected with the fixing clamp base plate 908 through a first bolt 914, a clamp groove 912 is formed between the fixing clamp plate 911 and the fixing clamp base plate 908, and the connecting rod 903 is arranged in the clamp groove 912;

a second spring gland 913, wherein the second spring gland 913 is arranged between the fixed clamping plate 911 and the first bolt 914;

and a third spring 915, wherein the third spring 915 is arranged between the second spring gland 913 and the fixed clamping plate 911. In this embodiment, the third spring 915 is disposed on the outer edge of the first bolt 914, the first bolt 914 is used to fix the fixing clip 911 to the fixing clip base plate 908, and the fixing clip 911 is used to fix the connecting rod 903 to the fixing clip base plate 908. As shown in fig. 6, the clip groove 912 is used to secure the link 903. The clamp groove 912 can clamp the connecting rod 903 when the first bolt 914 is tightened; when the first bolt 914 is unscrewed, the link 903 may slide within the clip groove 912, enabling adjustment of the position of the link 903. In a state of loosening the first bolt 914, the third spring 915 can keep the fixed clamping plate 911 still in close contact with the connecting rod 903. In this embodiment, as shown in fig. 6, a resilient collar 916 is further disposed between the clip base 908 and the ball collar 907.

Further, as a preferred embodiment, the rotary quick adjustment mechanism 6 includes:

the rotating mechanism support 601, the rotating mechanism support 601 is connected with one end of the extension rod mechanism 4;

the sliding block 602, the sliding block 602 is fixed on the rotating mechanism bracket 601 slidably;

a guide rod 603, the slide block 602 is connected with the rotating mechanism bracket 601 through the guide rod 603;

the rack 604 is fixed on the rotating mechanism bracket 601, and the rack 604 is positioned between the sliding block 602 and the rotating mechanism bracket 601;

a gear 605, the gear 605 is arranged in the sliding block 602, and the gear 605 is meshed with the rack 604;

a gear fixing mechanism, and a gear 605 is fixed in the slider 602 by the gear fixing mechanism. As shown in fig. 7 to 9, the rotating mechanism bracket 601 includes a first portion and a second portion, wherein the first portion is similar to a u-shaped structure and the second portion has a cylindrical structure; the sliding block 602 and the rack 604 are disposed inside the first portion of the rotating mechanism bracket 601, and the rack 604 is connected to the inner sidewall of the first portion of the rotating mechanism bracket 601. In this embodiment, the second portion of the rotary mechanism bracket 601 is connected to the threaded rod 405 in the extension rod mechanism 4 by a third bolt 611. The free end of the connection ring 1 on the lower side is connected to the second part of the rotation mechanism holder 601 as oriented in fig. 1.

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

the gear shaft 606, the slide block 602 is equipped with the gear mounting hole, the gear 605 is fixed in the gear mounting hole through the gear shaft 606;

a first end cover 607 is arranged at one end of the gear shaft 606;

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

a wave spring 609, the wave spring 609 being located between the first end cap 607 and the gear 605;

the other end of the gear shaft 606 is further provided with a wave-shaped clamp spring 610, and the wave-shaped clamp spring 610 is used for fixing the second end cover 608 in the gear mounting hole. In this embodiment, as shown in fig. 7 to 9, the first end cap 607 and the second end cap 608 are disposed at two ends of the gear shaft 606 for fixing 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 for connecting with an external socket wrench, which is used for controlling the gear shaft 606 to rotate. In a normal state, the gear fixing mechanism and the extension rod mechanism 4 are not rotatable. When needs are adjusted, take out wave form jump ring 610 earlier, then be connected through the hexagon head of box spanner and gear shaft 606 other end, rotate box spanner, gear shaft 606 drives gear 605 rotatory on rack 604, thereby drive slider 602 and remove in rotary mechanism support 601, the removal of slider 602 can drive the side guiding mechanism 5 removal rather than being connected, and side guiding mechanism 5 can drive kirschner wire 3 and rotate, make kirschner wire 3 drive fixed rotation, the rotation angle of control bone 11 that can be accurate and quick. When the end cover does not rotate, the positioning fluted disc on the shoulder of the gear shaft 606 is clamped on the end face positioning fluted disc of the second end cover 608 under the action of the wave spring 609. When the gear 605 rotates, the force from the socket wrench rotates the gear 605 while the end positioning toothed disc on the second end cap 608 moves back and forth by sliding circumferentially relative to the positioning toothed disc on the shoulder of the gear 605, forcing the gear 605 to compress the wave spring 609 in the axial direction. After the adjustment is completed, the wave-shaped clamp spring 610 is fixed in the limiting hole at the other end of the gear shaft 606 again. The wave-shaped snap spring 610 at this time limits the axial retraction of the gear 605, so that the positioning toothed disc on the shaft shoulder of the gear 605 and the end surface positioning toothed disc on the second end cover 608 are in a locked state, the gear 605 cannot move at this time, and the slide 602 is locked at the current position.

The above description is only a preferred embodiment of the present application, and does not limit the scope and the embodiments of the present application.

On the basis of the above preferred embodiment, the present application further has the following preferred embodiments:

further, as a preferred embodiment, the extension rod mechanism 4 is a quick extension rod mechanism 4, and the extension rod mechanism 4 includes:

a quick extension rod sleeve 401;

an opening and closing nut seat 402, wherein one end of the opening and closing nut seat 402 is connected with one end of the quick extension rod sleeve 401;

the other end of the split nut seat 402 is provided with a split nut 403;

the split nut locking sleeve 404 is arranged on the outer edges of the split nut 403 and the split nut seat 402 in a sliding manner;

the screw 405 sequentially penetrates through the split nut 403 and the split nut seat 402 and extends into the quick extension rod sleeve 401;

a mounting hole is formed in one end of the opening-closing nut seat 402, and the adjusting turn number counting spring 406 is arranged in the mounting hole;

a groove is formed in the end face of one end of the quick extension rod sleeve 401, and the adjusting turn number counting spring 406 is connected with the adjusting turn number counting steel ball 407 and abuts against the adjusting turn number counting steel ball 407 in the groove. In this embodiment, as shown in fig. 10 to 14, no screw thread or thread is provided on the inner wall of the quick extension rod sleeve 401, the split nut seat 402 is fixed to one end of the quick extension rod sleeve 401 through the quick extension rod adjusting sleeve 408, and the split nut 403 is fixed to the screw 405 and the split nut seat 402 through the split nut locking sleeve 404. The outer peripheral wall of the screw 405 is provided with screw threads, the inner wall of the opening and closing nut 403 is provided with nut threads, and the nut threads and the screw threads are locked and fixed in a locking state of the opening and closing nut 403. When the split nut 403 is in an open state, the nut threads are separated from the screw threads, and the split nut 403 is still fixed on the split nut seat 402 under the action of the split nut locking sleeve 404.

Further, as a preferred embodiment, the extension rod mechanism 4 further includes a quick extension rod adjusting sleeve 408, and the outer edge of the connection portion of the quick extension rod sleeve 401 and the opening and closing nut seat 402 is provided with the quick extension rod adjusting sleeve 408. The adjusting turn count steel ball 407 in this embodiment is matched with the adjusting turn count spring 406, and is used for recording the number of turns of the adjusting sleeve 408 of the quick extension rod, so as to realize fine adjustment of the screw 405.

Further, as a preferred embodiment, the extension rod mechanism 4 further comprises a screw 409, and the quick extension rod adjusting sleeve 408 is fixed on the outer edge of the connection position of the quick extension rod sleeve 401 and the split nut seat 402 through the screw 409. The screw 409 in this embodiment is a countersunk screw for connecting the quick extension rod adjustment sleeve 408 with the quick extension rod sleeve 401.

Further, as a preferred embodiment, a sliding groove 410 is formed at one side of the quick extension rod sleeve 401, and the sliding groove 410 is disposed along the axial direction of the quick extension rod sleeve 401.

Further, as a preferred embodiment, a plurality of scales 411 are disposed on one side of the quick extension rod sleeve 401, and the plurality of scales 411 are disposed on one side of the sliding groove 410, and the plurality of scales 411 are disposed along the axial direction of the quick extension rod sleeve 401.

Further, as a preferred embodiment, the extension rod mechanism 4 further includes an indication limiting pin 412, one end of the screw 405 is provided with the indication limiting pin 412, and the indication limiting pin 412 is located in the sliding slot 410. The indication limiting pin 412 in the embodiment is slidably disposed in the sliding groove 410, and under the action of the scale 411, the sliding distance of the indication limiting pin 412 can be accurately measured, so that the sliding distance of the screw 405 in the quick extension rod sleeve 401 is determined, and the accurate adjustment of the distance between the two lateral adjusting mechanisms 5 can be quickly realized.

Further, as a preferred embodiment, the split nut 403 is a two-piece split nut, and the two-piece split nut includes a first split nut and a second split nut, and both the first split nut and the second split nut are fixed on the screw 405 through the split nut locking sleeve 404.

Further, as a preferred embodiment, the locking device further includes an opening and closing nut opening spring 413, the inner walls of the first split nut and the second split nut are respectively provided with a first clamping groove 912, the two first clamping grooves 912 are connected to form a first mounting groove, and the opening and closing nut opening spring 413 is disposed in the first mounting groove. The split nut expanding spring 413 in this embodiment is disposed between the first split nut and the second split nut, and is configured to expand the first split nut and the second split nut, so as to realize the opening action of the split nut 403.

Further, as a preferred embodiment, the device further comprises a damping wire spring ring 414, a second mounting groove is formed in the outer edge of the split-nut seat 402, the damping wire spring ring 414 is disposed in the second mounting 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 is provided to prevent the split nut locking sleeve 404 from falling off accidentally.

Further, as a preferred embodiment, the extension rod adjusting sleeve further includes a spring wire retaining ring 415, a third mounting groove is formed in the outer edge of the quick extension rod sleeve 401, the spring wire retaining ring 415 is disposed in the third mounting groove, and the outer side wall of the spring wire retaining ring 415 abuts against the inner side wall of the quick extension rod adjusting sleeve 408.

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

when the rapid telescopic adjustment is needed, the resistance of the damping wire spring ring 414 is overcome, the split nut locking sleeve 404 is pulled downwards, the split nut 403 is bounced to two sides by the first split nut and the second split nut under the action of the split nut spreading spring 413, so that the nut thread and the screw thread are separated, and the screw 405 can be rapidly and rapidly adjusted in the rapid extension rod sleeve 401.

When fine telescopic adjustment is needed, the split nut locking sleeve 404 is pulled upwards, so that the split nut 403 is in a closed state, the damping steel wire spring ring 414 springs open to prevent the split nut locking sleeve 404 from accidentally falling off, and the quick extension rod adjusting sleeve 408 is rotated in the state to realize fine adjustment of the extension rod mechanism 4; in the fine adjustment process, when initial position, adjustment number of turns count steel ball 407 is pushed up in the recess under the effect of adjustment number of turns count spring 406, when rotatory quick extension rod adjusting sleeve 408, adjustment number of turns count steel ball 407 is ejecting from the recess, the every rotatory round of quick extension rod adjusting sleeve 408, adjustment number of turns count steel ball 407 can pass in and out the recess once, there is obvious feeling, be convenient for count, and the every rotatory round of quick extension rod adjusting sleeve 408, the pitch adjustment is 1mm, the axial length change of extension rod mechanism 4 is 1 mm.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides an external fixation support for orthopedics, its characterized in that includes go-between, guiding mechanism and kirschner wire, wherein, two be equipped with two between the guiding mechanism the go-between, each the one end of go-between respectively with one guiding mechanism is connected, wherein, each guiding mechanism all includes:

an extension rod mechanism;

2. The external fixator for orthopedics department of claim 1, further comprising a connecting rod and first fixing clips, wherein the connecting rod is arranged between the two connecting rings, and two ends of the connecting rod are connected with the two connecting rings through the two first fixing clips.

3. The external fixator for orthopedics department of claim 2, further comprising two angle-removal adjustment mechanisms slidably disposed on the connecting rod.

4. The external fixator for orthopedics department of claim 1, wherein each side adjustment mechanism comprises:

a Kirschner wire connecting seat;

5. The orthopedic external fixation support of claim 4, further comprising a first spring gland and a first spring, said first spring gland being located between said nut and said k-wire clamp plate, said first spring being located between said first spring gland and said k-wire clamp plate.

6. The external fixator for orthopedics according to claim 3, wherein each of said angle-removal adjustment mechanisms comprises: