CN211749999U

CN211749999U - Internal fixation device for fracture

Info

Publication number: CN211749999U
Application number: CN202020132071.8U
Authority: CN
Inventors: 卢仲琳
Original assignee: Affiliated Hospital Of Qinghai University
Current assignee: Affiliated Hospital Of Qinghai University
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-10-27
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to a fracture internal fixation device, which comprises a main bracket, two telescopic brackets, a driving screw and two racks; the main bracket comprises a plurality of support plates and a main plate, the support plates are arranged on two sides of the main plate at intervals, and a sliding groove is formed in a gap between every two adjacent support plates; each telescopic bracket comprises a plurality of telescopic plates and auxiliary plates, and a plurality of telescopic plates are arranged at intervals on one side of each auxiliary plate; two sides of the main board are respectively provided with a telescopic bracket, and a telescopic plate of the telescopic bracket is in inserting fit with the sliding chute; the driving screw is penetrated through the center of the main board, a gear is arranged at the top of the driving screw, racks are arranged on two sides of the gear in an anti-parallel mode, and the racks are meshed with the gear and connected with the expansion plates in the corresponding positions. The utility model is suitable for a big plane, the fracture that all is cracked of perpendicular orientation resets fixedly.

Description

Internal fixation device for fracture

Technical Field

The utility model relates to the technical field of medical equipment, in particular to internal fixation device for fracture.

Background

When exposed to severe external forces, it often disrupts the continuity or integrity of the bone and forms an interosseous fracture, i.e., a fracture. In order to cure the fracture, reduction and fixation are required. Depending on the fixation method, including internal fixation and external fixation, the internal fixation of fracture usually uses screw and steel plate, and it is found in practice that this fixation method is not suitable for fracture with large plane and fracture in both horizontal and vertical directions, such as hip fracture.

Disclosure of Invention

In view of this, the embodiment of the present invention provides an internal fracture fixation device to solve the above technical problems.

In order to achieve the technical purpose, the embodiment of the utility model provides a fracture internal fixation device: the improvement is that: comprises a main bracket, two telescopic brackets, a driving screw and two racks; the main support comprises a plurality of support plates and a main plate, the support plates are arranged on two sides of the main plate at intervals, and a sliding groove is formed in a gap between every two adjacent support plates; each telescopic support comprises a plurality of telescopic plates and auxiliary plates, and a plurality of telescopic plates are arranged on one side of each auxiliary plate at intervals; the two sides of the main board are respectively provided with the telescopic bracket, and the telescopic plate of the telescopic bracket is in inserting fit with the sliding groove; the mainboard center wears to establish drive screw, the drive screw top is provided with the gear, the reverse parallel arrangement in gear both sides the rack, the rack with gear engagement, and with the corresponding position the expansion plate is connected.

The utility model discloses owing to take above technical scheme, compare with prior art, it has following advantage:

the utility model discloses a set up main support and telescopic bracket sliding connection, and set up the gear and pass through the rack and exert pulling force or thrust to the expansion plate, and then when the rolling gear, not only can make main support and skeleton fixed, guarantee the restoration and the healing of fracture department, can make the expansion plate shrink or extend as required moreover, be applicable to very much the big plane, the equal cracked fracture of perpendicular orientation resets fixedly.

The utility model relates to a simple structure, it is with low costs, convenient operation, can wide application in medical technical field.

Drawings

FIG. 1 is a schematic structural view of one embodiment of the internal fracture fixation device of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of one embodiment of the relationship between the internal fixation device for bone fracture and the position of the bone;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic structural view of one embodiment of a slope screw of the internal fracture fixation device of the present invention;

FIG. 6 is a schematic structural view of one embodiment of a screw guiding tube of the internal fracture fixation device according to the present invention;

FIG. 7 is a schematic view showing the state of one of the installation processes of one embodiment of the internal fracture fixation device of the present invention;

fig. 8 is a schematic view showing another installation process state of one embodiment of the internal fracture fixation device of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

As shown in figures 1-3, the embodiment of the utility model provides a fracture internal fixation device, include: a main bracket 1, two telescopic brackets 2, a driving screw 3 and two racks 4;

the main support 1 comprises a plurality of support plates 11 and a main plate 12, wherein the support plates 11 are arranged on two sides of the main plate 12 at intervals, and a sliding groove is formed in a gap between every two adjacent support plates 11;

each telescopic bracket 2 comprises a plurality of telescopic plates 21 and auxiliary plates 22, and a plurality of telescopic plates 21 are arranged on one side of each auxiliary plate 22 at intervals:

two sides of the main board 12 are respectively provided with a telescopic bracket 2, and a telescopic plate 21 of the telescopic bracket 2 is in inserted fit with the sliding chute;

the driving screw 3 is penetrated through the center of the main board 12, a gear is arranged at the top of the driving screw 3, racks 4 are arranged on two sides of the gear in an anti-parallel mode, and the racks 4 are meshed with the gear and connected with the expansion board 21 in the corresponding position.

Through above scheme, when the rotating gear, not only can make main support 1 and skeleton 5 fixed, and then guarantee the restoration and the healing of fracture department, owing to set up the gear and apply pulling force or thrust through rack 4 to expansion plate 21, and then can make expansion plate 21 shrink or extend as required, be applicable to very much the big plane, the cracked fracture of horizontal vertical direction resets fixedly to set up the spout in mainboard 12 both sides, can effectively expand the restoration area that resets.

In one embodiment, both sides of each support plate 11 are provided with limiting grooves, correspondingly, both sides of each expansion plate 21 are provided with connecting columns, and the connecting columns and the limiting grooves are matched in a plugging manner.

In one embodiment, as shown in fig. 4 to 5, a plurality of fixing screw mounting grooves 13 are further disposed on the main board 12 at intervals, and each fixing screw mounting groove 13 includes:

a screw hole 131 for mounting a ramp screw 132;

a slope surface screw 132, the bottom surface of the top nut is provided with an inner chamfer to form a slope surface, and the bottom part passes through the screw hole 131 and is used for being in screw connection with the bone 5;

the inclined slope 133 is arranged on one side of the screw hole 131, inclines towards the center of the main plate 12 and extends to the edge of the screw hole 131 so as to be matched with the screw hole 131 when the slope screw 132 is screwed down, and applies lateral force to the bone 5, so that the crushed bone 5 is extruded and jointed towards the gap direction;

and a guide table 134 disposed at the other side of the screw hole 131 and having a top surface lower than the top of the fixing screw mounting groove 13, and having an inclined surface facing the screw hole 131 so as to mount the slope screw 132 in cooperation with the screw guide tube 6.

In one embodiment, a plurality of fixing screw mounting grooves 13 are spaced apart from each other on the auxiliary board 22, and the setting structure of the fixing screw mounting grooves 13 on the auxiliary board 22 is substantially the same as the setting structure of the fixing screw mounting grooves 13 on the main board 12, except that the inclined slope 133 in the fixing screw mounting grooves 13 on the auxiliary board 22 is inclined toward the center of the auxiliary board 22, which will not be described herein again.

In one embodiment, as shown in FIG. 6, the screw guiding tube 6 comprises a horizontal tube 61 and an arc tube 62, an outlet at one end of the horizontal tube 61 is provided as an outward slope mouth to guide the slope screw 132 into the screw hole 131, and the other end of the horizontal tube 61 is communicated with one end of the arc tube 62, and the other end of the arc tube 62 is used for an inlet of the slope screw 132.

In one embodiment, the top surface of the gear has a cross-shaped recess for mating attachment or detachment with a screwdriver.

In one embodiment, one end of the rack 4 is provided with a fixed column, the fixed column is fixedly connected with the expansion plate (21) at the corresponding position, a boss 23 is arranged at the end part of the expansion plate (21), a connecting hole is arranged in the boss 23, the connecting hole is in plug-in fit with the fixed column, and the other end of the rack 4 is in plug-in fit with the expansion plate (21) at the corresponding position.

The following describes in detail the use method of one embodiment of the internal fracture fixation device of the present invention with reference to the accompanying drawings 7 to 8:

1. when treating fracture, especially fracture with large plane and cracked fracture in horizontal and vertical directions, firstly cutting a straight notch 7 at the fracture part, wherein the width of the notch 7 is the same as that of the fracture internal fixation device of the utility model;

2. the internal fracture fixation device of the utility model is placed into the skin 8 through the incision 7;

3. adjusting the driving screw 3 to enable the expansion plate 21 to extend in the sliding groove;

4. guiding a ramp screw 132 into each screw hole 131 via a cut-out 7 with a screw guide tube 6;

5. forming a micropore on the skin 8, inserting a screwdriver into the micropore, and screwing down the slope surface screw 132;

6. a screwdriver is used for rotating a gear, the gear rotates to drive the rack 4 to apply tension to the expansion plate 21, so that the expansion plate 21 contracts, and broken bones are extruded and jointed towards the direction of a gap;

7. suturing the incision 7 of the skin 8;

8. treat a period of time after, demolish the utility model discloses a fracture internal fixation device demolishs the mode and is basically the same with above-mentioned fixed mode, so no longer describe repeatedly.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An internal fracture fixation device is characterized in that: comprises a main bracket (1), two telescopic brackets (2), a driving screw (3) and two racks (4);

the main support (1) comprises a plurality of support plates (11) and a main plate (12), wherein the support plates (11) are arranged on two sides of the main plate (12) at intervals, and a sliding groove is formed in a gap between every two adjacent support plates (11);

each telescopic support (2) comprises a plurality of telescopic plates (21) and auxiliary plates (22), and a plurality of telescopic plates (21) are arranged on one side of each auxiliary plate (22) at intervals;

the two sides of the main board (12) are respectively provided with the telescopic bracket (2), and the telescopic plate (21) of the telescopic bracket (2) is in inserted fit with the sliding groove;

the main board (12) center is penetrated by the driving screw (3), the top of the driving screw (3) is provided with a gear, the two sides of the gear are arranged in an anti-parallel mode to form the rack (4), the rack (4) is meshed with the gear, and the expansion plate (21) corresponding to the position is connected.

2. The internal fixation device for bone fracture as claimed in claim 1, wherein: each support plate (11) both sides all have a spacing groove, every expansion plate (21) both sides all have the spliced pole, the spliced pole with the spacing groove cooperation of pegging graft.

3. The internal fixation device for bone fracture as claimed in claim 1, wherein: mainboard (12) are gone up the interval and are set up a plurality of set screw mounting grooves (13), each all include in set screw mounting groove (13):

a screw hole (131);

the slope surface screw (132) penetrates through the screw hole (131), and the bottom surface of the top nut is provided with an inner chamfer;

and the inclined slope surface (133) is arranged on one side of the screw hole (131), inclines towards the center of the main plate (12) and extends to the edge of the screw hole (131).

4. The internal fixation device for bone fracture as claimed in claim 1, wherein: the interval sets up a plurality of set screw mounting grooves (13) on assisting board (22), each all include in set screw mounting groove (13):

a screw hole (131);

and an inclined slope surface (133) which is arranged on one side of the screw hole (131), inclines towards the center of the auxiliary plate (22) and extends to the edge of the screw hole (131).

5. An internal fracture fixation device as claimed in claim 3 or 4, wherein: still include in set screw mounting groove (13):

and the guide table (134) is arranged on the other side of the screw hole (131), the top surface of the guide table is lower than the top of the fixing screw mounting groove (13), and the guide table is provided with an inclined surface facing the screw hole (131).

6. The internal fixation device for bone fracture as claimed in claim 1, wherein: the fixing device further comprises a screw guide tube (6), the screw guide tube (6) comprises a horizontal tube (61) and an arc-shaped tube (62), an outlet at one end of the horizontal tube (61) is arranged to be an outward slope surface, and the other end of the horizontal tube (61) is communicated with the arc-shaped tube (62).