CN201341941Y - A fracture reposition instrument with multi-angle rotation and free expansion - Google Patents

Abstract

The utility model relates to a multi-angle rotating and freely telescopic fracture reducer. The fracture reducer comprises two grabbing hooks (1), a caliper (8) and a driving machine (9). The two grabbing hooks (1) respectively pass through The rotating round tenon joint (14) connects the caliper (8) and the driving machine (9), and the caliper (8) and the driving machine (9) are engaged; Rod (3), thread lifting rod (16), fixed lifting rod (5), bone holding forceps (7) are made up of five parts, and described caliper (8) is provided with square tooth (13), and described driving machine ( 9) Be provided with the dial wheel (10) that matches with square tooth and the pin (12) that limits caliper (8) to enter and exit the position of driver (9). Compared with the prior art, the utility model has multi-directional and multi-angle adjustment functions such as forward and backward expansion, left and right rotation, up and down lifting, and can make complex fractures such as intercalation, shortening, rotation and angulation reach the best state of anatomical reduction.

Description

A fracture reducer with multi-angle rotation and free expansion and contraction

technical field

The invention relates to a fracture reducer, in particular to a fracture reducer with multi-angle rotation and free expansion and contraction.

Background technique

In daily production and life, human bones are often injured due to accidents. For example, fractures caused during sports, bone injuries caused by traffic accidents, etc. seriously endanger human health. If not handled properly, they may cause lifelong paralysis, which not only causes great pain to patients, but also creates a burden on society. After the fracture of the long bones of the limbs, due to the contraction of the muscles, the fracture ends will be deformed by intercalation, shortening, and rotation angles. During the surgical treatment, the fracture ends must first be reduced by traction. In the traditional manual reduction therapy, due to the strong contractility of limb muscles, manual reduction is difficult, time-consuming, labor-intensive, tissue damage is large, and intraoperative bleeding is large, which is not conducive to the postoperative recovery of patients. The number of existing fracture reducers is small, and most of them have complex structures and cumbersome operations; rotation angle deformities are difficult to completely correct; tissue damage is large, and intraoperative bleeding is much.

Contents of the invention

The purpose of this utility model is to provide a multi-angle rotating and free telescopic fracture reducer with simple structure and easy to use in order to overcome the defects of the above-mentioned prior art.

The purpose of this utility model can be achieved through the following technical solutions: a fracture reducer with multi-angle rotation and free expansion and contraction, characterized in that the fracture reducer includes two grab hooks 1, calipers 8 and driving machine The grapple 1 is respectively connected to the caliper 8 and the driver 9 through a rotatable round tenon joint 14, and the caliper 8 and the driver 9 are clamped; the grapple 1 is composed of a cylindrical shell 4, a rotating rod 3, a threaded lifting rod 16, The fixed elevating rod 5 and the bone holding forceps 7 are composed of five parts. The lower end of the rotating rod 3 is connected with the threaded elevating rod 16 through thread fit, and the middle is connected with the outer cylindrical shell 4 through a round tenon joint 17. The upper end is provided with a rotating rod. handle 2, one end of the fixed lifting rod 5 is connected to the threaded lifting rod 16 through a round tenon joint 18, and the other end is connected to the bone holding forceps 7, the described caliper 8 is provided with square teeth 13, and the described driving machine 9 is provided with The thumb wheel 10 that the square teeth match and the pin 12 that limits the caliper 8 to enter and exit the position of the driver 9 .

The lower end of the bone holding forceps 7 is provided with an anti-skid pad 23 , the middle is provided with a rotating central shaft 6 connected to the bottom of the fixed lifting rod 5 , and the two handles at the upper end are provided with perforations 22 connected with the crossbeam 19 of the fixed lifting rod 5 .

The two ends of the beam 19 are provided with nuts 20 for fixing the positions of the two handles of the rongeur 7, and a spring 21 is arranged between the two handles.

The two sides of the fixed elevating rod 5 are provided with limiting guide grooves 24 , and the inner side of the cylindrical shell 4 is provided with protrusions matching the limiting guide grooves 24 .

Described round tenon joint 17 is made up of the groove that is fixed on the cylindrical housing 4 and the cam that is fixed on the rotating rod 3, and cam is placed in the groove.

Described round tenon joint 18 is made up of the groove that is fixed on the thread lifting rod 16 and the cam that is fixed on the fixed lifting rod 5, and cam is placed in the groove.

A lock nut 15 is provided on the outer side of the round tenon joint 14 .

Described round tenon joint 14 is made up of the groove that is fixed on the grab hook 1 and the cam that is fixed on the caliper 8 or the driver 9, and the cam is placed in the groove.

The driving machine 9 is provided with a rocking bar 11 that drives the dial 10 to rotate.

Compared with the prior art, the utility model has the following advantages:

1. Powerful functions: The multi-angle rotating and freely telescopic fracture resetter of this utility model is equipped with two grapples, a caliper and a driver connected to the grapple through a round tenon joint, so that the grapple can rotate freely around the caliper or the driver, The caliper is driven in and out of the driving machine by shaking the rocker of the driving machine, so that the two grapples can be stretched back and forth, and the distance between the two grapples can be adjusted freely. The grapple includes a rotating rod, a threaded lifting rod and a fixed lifting rod. The threaded lifting rod drives the fixed lifting rod up and down, so as to realize the free adjustment of the length of the hook. Therefore, the fracture reducer of the utility model has multi-directional and multi-angle adjustment functions of front and back expansion, left and right rotation, and up and down lifting, which can make the insertion Complex fractures such as shortening, rotation and angulation achieve the best state of anatomical reduction.

2. High efficiency: The multi-angle rotating and freely telescopic fracture reducer of the utility model has the advantages of simple structure, convenient operation, rapid and accurate fracture reduction, reduced labor intensity of doctors, improved operation quality, shortened operation time, reduced intraoperative bleeding, shortened Postoperative patient recovery period.

Description of drawings

Fig. 1 is the structural representation of the fracture reducer of the present utility model;

Fig. 2 is a sagittal section view of the two grapples in Fig. 1 in the A-A direction;

Fig. 3 is the B-B direction cross-sectional view of Fig. 1;

Fig. 4 is a cross-sectional view of the C-C direction of Fig. 1 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figure 1-4, a fracture reducer with multi-angle rotation and free expansion and contraction, the fracture reducer includes two grapples 1, a caliper 8 and a driver 9, and the two grapples 1 respectively pass through the rotatable circle The tenon joint 14 connects the caliper 8 and the driver 9, and the caliper 8 and the driver 9 are clamped. The round tenon joint 14 is composed of a groove fixed on the grab hook 1 and a cam fixed on the caliper 8 or the driver 9. The cam is placed It is in the groove and can rotate in the groove, so that the grapple 1 can rotate freely around the caliper 8 or the driving machine 9. There is a locking nut 15 on the outside of the round tenon joint 14. When the grapple 1 rotates to the required position, it will pass through The locking nut 15 fixes the grapple 1 . Described caliper 8 is provided with square tooth 13, and described driver 9 is provided with the dial 10 that matches with square tooth and the pin 12 that limits caliper 8 to enter and exit the position of driver 9, and driver 9 is provided with driving dial 10. The rocking bar 11 that rotates, drives the caliper to enter and exit the driving machine by shaking the rocking bar 11 of the driving machine, so that the two grapples are stretched back and forth, and the free adjustment of the distance between the two grapples is realized. The pins can be set to limit the position of the caliper entering and leaving the driving machine.

The grapple 1 is composed of five parts: a cylindrical shell 4, a rotating rod 3, a threaded lifting rod 16, a fixed lifting rod 5, and a bone holding forceps 7. The lower end of the rotating rod 3 is connected with the threaded lifting rod 16 through a threaded fit. The round tenon joint 17 is connected with the outer cylindrical shell 4, and the upper end is provided with a rotating handle 2. The round tenon joint 17 is composed of a groove fixed on the cylindrical shell 4 and a cam fixed on the rotating rod 3. The cam is placed In the groove and can rotate in the groove, one end of the fixed lifting rod 5 is connected to the threaded lifting rod 16 through a round tenon joint 18, and the other end is connected to the bone holding forceps 7, and the lower end of the holding bone forceps 7 is provided with an anti-slip pad 23, The center is provided with the rotating axis 6 that is connected with the top of the fixed lifting rod 5, and the two handles at the upper end are provided with perforations 22 that are connected with the beam 19 of the fixed lifting rod 5. The nuts 20 at the two handles of the rongeur 7 are provided with a spring 21 between the two handles, through which the opening and closing of the rongeur can be realized, and the nuts can be used to fix the positions of the two handles of the rongeur.

The lower end of the rotating rod 3, the threaded lifting rod 16 and the upper end of the fixed lifting rod 5 are all placed in the cylindrical shell 4. One end of the threaded lifting rod 16 is screwed with the rotating rod 3, and the other end is connected to the fixed lifting rod 5 through a round tenon joint 18. The tenon joint 18 is composed of a groove fixed on the threaded lifting rod 16 and a cam fixed on the fixed lifting rod 5. The cam is placed in the groove and can rotate in the groove. Groove 24, the inner side of cylindrical shell 4 is provided with the protrusion that matches with limit guide groove 24, can prevent fixed lifting rod 5 from rotating when fixed lifting rod 5 is stretched up and down, and rotating rotating rod 3 can make threaded lifting rod 16 drive The fixed elevating rod 5 lifts up and down, so as to realize the free adjustment of the length of the grapple 1. Therefore, the fracture reducer of the present utility model has multi-directional and multi-angle adjustment functions of front and back expansion, left and right rotation, and up and down lifting, which can make the intercalation shorten, Complex fractures such as rotatable angles achieve the best state of anatomical reduction.

The above embodiments are further descriptions of the utility model in conjunction with the accompanying drawings, rather than any limitation to the technical solution of the utility model. Those skilled in the art can make endless transformations to the above-mentioned embodiments within the scope of the technical solution of the utility model, but these transformations all belong to the scope of protection required by the claims of the utility model.

Claims (9)

1. A fracture reducer with multi-angle rotation and free expansion and contraction is characterized in that the fracture reducer comprises two grapples (1), calipers (8) and driver (9), two grapples (1) The caliper (8) and the driving machine (9) are respectively connected through a rotatable round tenon joint (14), and the caliper (8) and the driving machine (9) are clamped; the grapple (1) is formed by a cylindrical shell (4 ), rotating rod (3), threaded elevating rod (16), fixed elevating rod (5), bone holding forceps (7) are composed of five parts, and the lower end of the rotating rod (3) is threaded with the threaded elevating rod ( 16) connection, the middle is connected with the outer cylindrical shell (4) through a round tenon joint (17), the upper end is provided with a rotating handle (2), and one end of the fixed lifting rod (5) is connected through a round tenon joint (18) Thread lifting rod (16), the other end is connected with bone holding forceps (7), described caliper (8) is provided with square tooth (13), and described driving machine (9) is provided with the dial wheel that matches with square tooth (10) and pins (12) that limit the position of the caliper (8) in and out of the driver (9). 2. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 1, characterized in that, the lower end of the bone holding forceps (7) is provided with an anti-slip pad (23), and the center is provided with a fixed lifting rod (5) the rotating center shaft (6) that the bottom is connected, two handles at the upper end are provided with the perforation (22) that is connected with the crossbeam (19) of fixing elevating rod (5). 3. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 2, characterized in that, the two ends of the beam (19) are provided with nuts (20) for fixing the positions of the two handles of the bone forceps (7). ), a spring (21) is provided between the two handles. 4. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 1, characterized in that, both sides of the fixed lifting rod (5) are provided with limiting guide grooves (24), and the cylindrical The inner side of the housing (4) is provided with a protrusion matching the limit guide groove (24). 5. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 1, characterized in that, said round tenon joint (17) consists of a groove fixed on the cylindrical shell (4) and fixed on the The cam on the rotating rod (3) is formed, and the cam is placed in the groove. 6. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 1, characterized in that, the round tenon joint (18) consists of a groove fixed on the threaded lifting rod (16) and fixed on the The cam on the fixed elevating rod (5) is formed, and the cam is placed in the groove. 7. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 1, characterized in that a lock nut (15) is provided on the outer side of the round tenon joint (14). 8. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 5, characterized in that, the round tenon joint (14) consists of a groove fixed on the grapple (1) and a caliper (8) or the cam on the driving machine (9) is formed, and the cam is placed in the groove. 9. A fracture reducer with multi-angle rotation and free expansion and contraction according to claim 1, characterized in that, the driving machine (9) is provided with a rocker (11) for driving the dial wheel (10) to rotate.

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