A fixing mechanism for traction positioning

Abstract

The present invention belongs to the technical field of traction and positioning devices, and provides a fixing mechanism for traction and positioning, comprising a slide rail, a slide seat, a positioning rod and two positioning rod seat groups, wherein the two positioning rod seat groups are both mounted on the slide rod through the slide seat, the slide seat can slide along the slide rod, the slide seat is fixed to the slide rod through a fixing bolt, a plurality of mounting holes for mounting the positioning rods are provided on the positioning rod seat group, and the positioning rods are fixedly mounted in the mounting holes to realize traction and positioning of injured tissue; the present invention realizes simple and efficient adjustment of the position and angle of each positioning rod on the positioning rod seat group through an adjustment mechanism provided on the slide rod and the positioning rod seat group, thereby quickly and accurately realizing traction and positioning of the injured tissue.

Description

Technical Field

[0001] The invention belongs to the technical field of traction and fixing, and relates to a fixing mechanism for traction and positioning. Background Art

[0002] During the process of limb fracture reduction and deformity correction, auxiliary tools are needed to traction and position the limbs to provide rigid and stable fixation, which is conducive to accelerating bone healing.

[0003] Traditional bone reduction and fixation tools have many components and are difficult to assemble. The key to fixing the bracket lies in traction and pressure positioning. The traction and pressure positioning mechanism needs to be able to maintain the central axis force lines of the two bone segments on the same axis through the positioning rod fixed on it. Otherwise, the process of bone transportation and bone extension will cause the extension route to shift, ultimately leading to poor bone growth force line and failure of deformity correction. Summary of the Invention

[0004] The purpose of the present invention is to provide a traction positioning fixing mechanism that can simply and efficiently adjust the direction of the positioning rod and can accurately and stably support the damaged tissue of the bone to be corrected.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0006] A fixing mechanism for traction positioning is characterized in that it includes a slide rail, a slide seat, a positioning rod seat group and several positioning rods, the positioning rod seat group includes a first positioning rod seat group and a second positioning rod seat group, the first positioning rod seat group and the second positioning rod seat group are both connected to a slide seat, the slide seat is installed on the slide rail and can slide along the slide rail, the slide seat and the slide rail are fixed by a fixing bolt, and the first positioning rod seat group and the second positioning rod seat group are provided with several mounting holes for installing the positioning rods.

[0007] The first positioning rod seat assembly includes a first positioning rod seat and a first fixing seat. The first positioning rod seat includes a first upper positioning rod seat, a first lower positioning rod seat, and a first fastening bolt. The first upper positioning rod seat is mounted on the first lower positioning rod seat and fixed by the first fastening bolt. The mounting hole is provided at the connection between the first upper positioning rod seat and the first lower positioning rod seat, and the aperture of the mounting hole is adjusted by the first fastening bolt. The first fixing seat includes a fixed end and a movable end. The fixed end is fixedly connected to a sliding seat, and the movable end is connected to the first lower positioning rod seat. The movable end is provided with a rotating shaft, and the movable end is connected to the fixed end via the rotating shaft.

[0008] A cylindrical cavity is machined on the fixed end to match the clearance of the rotating shaft. A through slot is opened at one end of the cavity. The two sides of the through slot are connected by a second fastening bolt. Adjusting the second fastening bolt can close the two sides of the through slot at the fixed end and clamp the rotating shaft.

[0009] The rotating shaft on the movable end intersects with the second fastening bolt. An annular groove is processed at a position on the rotating shaft intersecting with the second fastening bolt. The annular groove is clearance-matched with the second fastening bolt.

[0010] A stress groove corresponding to the through groove is processed in the cylindrical cavity on the fixed end.

[0011] The second positioning rod seat group includes a second positioning rod seat and a second fixed seat. The second positioning rod seat includes a second upper positioning rod seat, a second lower positioning rod seat and a third fastening bolt. The second upper positioning rod seat is installed on the second lower positioning rod seat and fixed by the third fastening bolt. The mounting hole is set at the connection between the second upper positioning rod seat and the second lower positioning rod seat. The aperture of the mounting hole can be adjusted by the third fastening bolt.

[0012] The second lower positioning rod seat is fixedly connected to a sliding seat, and an internal threaded hole is provided on the side of the second lower positioning rod seat facing the second fixed seat; the second fixed seat is connected to the second lower positioning rod seat through an adjusting bolt, and the adjusting bolt cooperates with the internal threaded hole on the second lower positioning seat to adjust the position of the second positioning rod seat, and the second fixed seat is fixed to a sliding seat through a fixing bolt.

[0013] A side wing is also fixed on the second fixing seat. The side wing is arranged parallel to the adjusting bolt. A scale line is set at the front end of the side wing. The scale line can mark the distance of the adjusting bolt to adjust the second positioning rod seat.

[0014] The beneficial effects of the present invention are as follows: the traction positioning fixing mechanism can simply and conveniently adjust the position and angle of each positioning rod on the positioning rod seat group through the slide rail and the positioning rod seat group, thereby quickly and accurately achieving traction positioning of the injured tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 、 Figure 2 、 Figure 3 It is a structural schematic diagram of the present invention;

[0016] Figure 4 It is a structural schematic diagram of the rotating shaft and the second fastening bolt in the present invention;

[0017] In the figure, 1 is a slide rail; 2 is a slide seat; 21 is a first slide seat; 22 is a second slide seat; 23 is a third slide seat; 3 is a positioning rod; 4 is a first positioning rod seat; 41 is a first positioning rod seat; 411 is a first upper positioning rod seat; 412 is a first lower positioning rod seat; 413 is a first fastening bolt; 42 is a first fixing seat; 421 is a fixed end; 422 is a movable end; 423 is a rotating shaft; 424 is a cavity; 425 is a through groove; 426 is a stress groove; 427 is a first fixing bolt; , second fastening bolt; 428, annular groove; 5, second positioning rod seat group; 51, second positioning rod seat; 511, second upper positioning rod seat; 512, second lower positioning rod seat; 513, third fastening bolt; 514, internal threaded hole; 52, second fixing seat; 521, adjusting bolt; 522, side wing; 523, scale line; 6, fixing bolt; 61, first fixing bolt; 62, second fixing bolt; 63, third fixing bolt; 7, mounting hole. DETAILED DESCRIPTION

[0018] The invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] A fixing mechanism for traction positioning, such as Figure 1 As shown, it includes a slide rail 1, a slide seat 2, a positioning rod seat group and several positioning rods 3. The positioning rod seat group includes a first positioning rod seat group 4 and a second positioning rod seat group 5. The first positioning rod seat group 4 and the second positioning rod seat group 5 are both connected to the slide seat 2. The slide seat 2 is installed on the slide rail 1 and can slide along the slide rail 1. The slide seat 2 and the slide rail 1 are fixed by a fixing bolt 6. The first positioning rod seat group 4 and the second positioning rod seat group 5 are provided with several mounting holes 7 for installing and fixing the positioning rods 3.

[0020] The first positioning rod seat group 4, such as Figure 2 As shown, it includes a first positioning rod seat 41 and a first fixing seat 42. The first positioning rod seat 41 includes a first upper positioning rod seat 411, a first lower positioning rod seat 412 and a first fastening bolt 413. The first upper positioning rod seat 411 is installed on the first lower positioning rod seat 412 and is fixed by the first fastening bolt 413. The mounting hole 7 is set at the connection between the first upper positioning rod seat 411 and the first lower positioning rod seat 412. The distance between the first upper positioning rod seat 411 and the first lower positioning rod seat 412 can be adjusted by the first fastening bolt 413 to adjust the aperture of the mounting hole 7.

[0021] The first fixed seat 42 includes a fixed end 421 and a movable end 422. The bottom of the fixed end 421 is connected to the first slide seat 21 by a first fixing bolt 61, and the movable end 422 is connected to the first lower positioning rod seat 412. A rotating shaft 423 is provided on the movable end 422, which is connected to the fixed end 421 through this rotating shaft 423. A cylindrical cavity 424 is processed on the fixed end 421 to fit the rotating shaft 423 with a clearance, so that the rotating shaft 423 can have a small range of movable space in the cylindrical cavity 424. A through groove 425 is opened on one side of the cylindrical cavity 424, and a stress groove 426 is processed opposite the through groove 425. The two sides of the through groove 425 are connected by a second fastening bolt 427. Adjusting the second fastening bolt 427 can close the two sides of the through groove 425 on the fixed end 421, thereby clamping the rotating shaft 423 on the movable end 422.

[0022] The rotating shaft 423 on the movable end 422 intersects with the second fastening bolt 427. Figure 4 As shown, an annular groove 428 is processed at the intersection of the rotating shaft 423 and the second fastening bolt 427. The annular groove 428 is clearance-matched with the second fastening bolt 427, so that there is a small range of movable space between the rotating shaft 423 and the second fastening bolt 427. At the same time, the second fastening bolt 427 can limit the rotating shaft 423.

[0023] The gap between the annular groove 428 and the second fastening bolt 427 , and the gap between the rotating shaft 423 and the cylindrical cavity 424 , allow the angle of the positioning rod 3 on the first positioning rod seat 41 to be adjusted within a certain range of motion.

[0024] The second positioning rod seat group 5, such as Figure 3As shown, it includes a second positioning rod seat 51 and a second fixing seat 52, the second positioning rod seat 51 includes a second upper positioning rod seat 511, a second lower positioning rod seat 512 and a third fastening bolt 513, the second upper positioning rod seat 511 is installed on the second lower positioning rod seat 512 and is fixed by the third fastening bolt 513, the mounting hole 7 is set at the connection between the second upper positioning rod seat 511 and the second lower positioning rod seat 512, the distance between the second upper positioning rod seat 511 and the second lower positioning rod seat 512 can be adjusted by the third fastening bolt 513 to adjust the aperture of the mounting hole 7; the lower end of the second lower positioning rod seat 512 is connected to the second slide seat 22 by the second fixing bolt 62 Then, an internal threaded hole 514 is provided at the side end of the second lower positioning rod seat 512; the bottom end of the second fixed seat 52 is connected and fixed to the third slide seat 23 by a third fixing bolt 63, and the side end of the second fixed seat 52 is connected to the side end of the second lower positioning rod seat 512 by an adjusting bolt 521, and the adjusting bolt 521 cooperates with the internal threaded hole 514 at the side end of the second lower positioning rod seat 512 to adjust the position of the second positioning rod seat 51, and a side wing 522 is also fixed on the second fixed seat 52, and the side wing 522 is arranged parallel to the adjusting bolt 521, and a scale line 523 is processed at the front end of the side wing 522, which is used to mark the distance of the adjusting bolt 521 to adjust the second positioning rod seat 51.

[0025] When in use, first, according to the damage condition of the target of traction positioning, the number of positioning rods 3 is selected, and the basic principle is to minimize trauma and ensure stability and firmness. The corresponding number of positioning rods 3 are respectively installed in the mounting holes 7 of the first positioning rod seat 41 and the second positioning rod seat 51, and fixed by adjusting the first fastening bolt 413 and the third fastening bolt 513; then, the first positioning seat group 4 and the second positioning seat group 5 are connected and fixed to the slide rail 1 through the first fixing bolt 61 and the third fixing bolt 63. Then, the target of traction positioning is connected and fixed with the positioning rod 3, and then the angular position of the first positioning rod seat 41 is adjusted within the movable range of the fixed end 421 and the movable end 422 of the first fixing seat 42 as needed. After the position is determined, the fixed end 421 and the movable end 422 are fixed by the second fastening bolt 427; thereafter, the relative position of the second positioning rod seat 51 and the first positioning rod seat 41 is fine-tuned by adjusting the bolt 521. After the traction pressure positioning requirement is achieved, the second fixing bolt 62 is fixed.

[0026] The above description is only a preferred embodiment of the present invention, which cannot be used to limit the scope of rights of the present invention. Equivalent changes made according to the claims of the present invention are still within the scope of protection covered by the present invention.

Claims

1. A fixing mechanism for traction positioning, characterized in that: The invention comprises a slide rail (1), a slide seat (2), a positioning rod seat group and a plurality of positioning rods (3), wherein the positioning rod seat group comprises a first positioning rod seat group (4) and a second positioning rod seat group (5), wherein the first positioning rod seat group (4) and the second positioning rod seat group (5) are both connected to the slide rail (2), wherein the slide rail (2) is mounted on the slide rail (1) and can slide along the slide rail (1), wherein the slide rail (2) and the slide rail (1) are fixed by a fixing bolt (6), and the first positioning rod seat group (4) and the second positioning rod seat group (5) are provided with A plurality of mounting holes (7) for mounting the positioning rod (3); the second positioning rod seat group (5) includes a second positioning rod seat (51) and a second fixing seat (52); the second positioning rod seat (51) includes a second upper positioning rod seat (511), a second lower positioning rod seat (512) and a third fastening bolt (513); the second upper positioning rod seat (511) is mounted on the second lower positioning rod seat (512) and fixed by the third fastening bolt (513); the mounting hole (7) is provided on the second upper positioning rod seat (511) and the second lower positioning rod seat (512), the aperture of the mounting hole (7) is adjusted by a third fastening bolt (513); the second lower positioning rod seat (511) is fixedly connected to the slide seat (2), and the second lower positioning rod seat (512) is provided with an internal threaded hole (514) on the side facing the second fixed seat (52); the second fixed seat (52) is connected to the second lower positioning rod seat (512) by an adjusting bolt (521), and the adjusting bolt (521) is connected to the internal threaded hole (514). The threaded hole (514) cooperates with the position of the second positioning rod seat (5) to adjust the position. The second fixing seat (52) is connected and fixed to the slide seat (2) via a fixing bolt (6). A side wing (522) is also fixed on the second fixing seat (52). The side wing (522) is arranged parallel to the adjusting bolt (521). A scale line (523) is provided at the front end of the side wing (522). The scale line (523) is used to mark the distance that the adjusting bolt (521) adjusts the second positioning rod seat (51).

2. A traction positioning fixing mechanism according to claim 1, characterized in that: The first positioning rod seat group (4) includes a first positioning rod seat (41) and a first fixing seat (42); the first positioning rod seat (41) includes a first upper positioning rod seat (411), a first lower positioning rod seat (412) and a first fastening bolt (413); the first upper positioning rod seat (411) is mounted on the first lower positioning rod seat (412) and fixed by the first fastening bolt (413); the mounting hole (7) is provided between the first upper positioning rod seat (411) and the first lower positioning rod seat (412), the aperture of the mounting hole (7) is adjusted by a first fastening bolt (413); the first fixing seat (42) includes a fixed end (421) and a movable end (422), the fixed end (421) is fixedly connected to the slide seat (2), the movable end (422) is fixedly connected to the first lower positioning rod seat (412), a rotating shaft (423) is provided on the movable end (422), and the movable end (422) is connected to the fixed end (421) via the rotating shaft (423).

3. A traction positioning fixing mechanism according to claim 2, characterized in that: A cylindrical cavity (424) is machined on the fixed end (421) and is clearance-matched with the rotating shaft (423). A through slot (425) is formed at one end of the cylindrical cavity (424). Both sides of the through slot (425) are connected by a second fastening bolt (427). By adjusting the second fastening bolt (427), both sides of the through slot (425) can be closed to clamp the rotating shaft (423).

4. A traction positioning fixing mechanism according to claim 3, characterized in that: The rotating shaft (423) intersects with the second fastening bolt (427), and an annular groove (428) is machined at the intersection of the rotating shaft (423) and the second fastening bolt (427), and the annular groove (428) and the second fastening bolt (427) are clearance-matched.

5. The traction positioning fixing mechanism according to claim 3, characterized in that: A stress groove (426) corresponding to the through groove (425) is machined in the cylindrical cavity (424).

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