WO2021201318A1

WO2021201318A1 - Plate assembly for fixing long bone

Info

Publication number: WO2021201318A1
Application number: PCT/KR2020/004422
Authority: WO
Inventors: 윤택림; 조선신
Original assignee: 전남대학교산학협력단; 유한회사 인터메디
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-10-07
Also published as: KR20210121806A

Abstract

The present invention relates to a plate assembly for fixing a long bone and, more specifically, to a plate assembly for fixing a long bone, the plate assembly being capable of firmly and stably fixing the long bone because the plate assembly can be fixed by an additional locking screw, as well as a compressive screw that is fixed after passing through a plate support, wherein a plate extension unit can be assembled by being inserted in the plate support so as to easily increase the total length of the plate, and thus, minimally invasive surgery for minimizing a cut area can be executed.

Description

Plate assembly for fixation of long bones

The present invention relates to a plate assembly for fixing long bones, and more particularly, to a plate assembly for fixing long bones used for fusion of broken long bones or osteotomy and re-fixation of long bones.

In general, when a fracture occurs in a bone due to an accident, etc., various treatments are considered to restore the bone to its original state or to not interfere with activity. For example, in the case of a simple fracture such as a crack in the bone In this case, a means to prevent movement of the fracture site is used so that the fractured bones are united in their present state with plaster, etc. After surgery, open blood reduction is performed so that the fractured bone is directly restored to its original state, and then the restored bone is supported in its original state by intra-metal fixation.

However, there are various types of intra-metal fixtures used to perform the above-mentioned intra-metal fixation, and in general, a fixed metal plate that supports the bone by directly padding the fractured part of the bone to help the treatment of the fracture is widely used. have.

The conventional metal plate for bone union is provided in the shape of a plate having a plurality of screw holes, so that the metal plate for bone union is supported by a screw fixed to the bone through the screw hole, and for patients such as patients in falls and traffic accidents. developed and used.

However, since the conventional metal plate for bone union has a fixed size and shape, when a long metal plate for bone union is used, the incision of the recipient must be cut to correspond to the size of the metal plate for bone union. There was a problem in that the incision of the incision could not be minimized.

In addition, the conventional metal plate for bone fusion has a problem in that it cannot be firmly fixed during fracture of a site having a complex shape, such as a femur.

The present invention has been devised to solve these problems, and an object of the present invention is to provide a plate assembly for fixing long bones that can firmly fix long bones.

Another object of the present invention is to be able to easily change the length of the plate based on the assembled type, so that it can be applied as a minimally invasive surgery that minimizes the incision, reducing bleeding, post-operative pain and infection, and having a long length It is to provide a plate assembly for fixing long bones that can replace the metal plate for bone union in the form of, and dramatically reduce the amount of inventory for the product.

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention has a plate shape, a plate support portion having a plurality of screw holes formed in the vertical direction; a cylindrical insertion part having a cylindrical shape having a through hole formed in the center, integrally extending from one end of the plate support part, inclined at a predetermined angle with the plate support part, and inserted into the long bone; And a plate shape, a plurality of screw holes are formed in the vertical direction, one end is fitted to the other end of the plate support, the plate extension is assembled; provides a plate assembly for fixing long bones comprising a.

In a preferred embodiment, the plate extension part is provided in plurality, and one end of each plate extension part is fitted to the other end of each plate extension part so as to be assembled.

In a preferred embodiment, the plate extensions are provided in different lengths.

In a preferred embodiment, one end of the plate extensions is provided with a fastening recess integrally extending in the longitudinal direction, and the other end of the plate support part is provided with a fastening recess into which the fastening recess can be fitted, The other ends of the plate extensions are provided with fastening grooves into which the fastening recesses can be fitted.

In a preferred embodiment, a screw hole penetrating vertically is formed in the fastening recesses of the plate extension parts, and when the fastening recesses of the plate extension parts are inserted into the fastening grooves of the plate support part and assembled, the screw holes of the fastening recesses And, the screw hole located at the other end of the plate support part communicates with one screw hole.

In a preferred embodiment, when the fastening recess of the second plate extension is inserted into the fastening groove of the first plate extension and assembled, the screw hole of the fastening recess and the screw hole located at the other end of the first plate extension are one It communicates with the screw hole.

In a preferred embodiment, at least one locking groove portion is formed on one corner of the upper surface of the plate support portion or the plate extensions, and at least one other side portion of the other corner of the upper surface at a position opposite to the one locking groove portion A hooking groove is formed, and a cable capable of being fixed in a shape surrounding the long bone by being caught in the locking groove; it further includes.

In a preferred embodiment, a fixing cap including a body portion in which a screw hole is formed in the vertical direction in a plate shape and a bar shape, and a pair of sliding recesses integrally extending from both ends of the other end of the body portion; , On both sides of one end of the plate support, a pair of sliding grooves are provided in which the pair of sliding recesses can be fitted and coupled in a direction from one end to the other, and the fixing cap is slidably fastened to the plate support.

In a preferred embodiment, the central axis of the through-hole of the cylindrical insertion part and the central axis of the screw hole of the fixing cap are parallel to each other.

In a preferred embodiment, the compression screw (compression screw) fixed to the long bone through the through hole of the cylindrical insertion portion; and a locking screw additionally installed in the long bone through the screw hole of the fixing cap.

In a preferred embodiment, the plate extension portion is provided in a curved shape with a predetermined curvature from one end to the other end so as to correspond to the bent shape of the long bone stem.

The present invention has the following excellent effects.

According to the plate assembly for fixing the long bone of the present invention, it is possible to fix not only the compression screw fixed through the plate support, but also an additional locking screw, so that the long bone can be firmly and stably fixed.

In addition, according to the plate assembly for fixing the long bone of the present invention, even when fixing by a screw is impossible, it has the advantage of stably fixing the long bone using an annular cable (steel wire).

In addition, according to the plate assembly for fixing the long bone of the present invention, the plate extension part is fitted to the plate support part and provided in an assembleable form, so that the overall length of the plate can be easily increased, so it can be performed with minimally invasive surgery that minimizes the incision area. This can reduce bleeding, post-operative pain and infection, and replace the long-form metal plate for bone union, which has the effect of dramatically reducing the inventory of the product.

1 is a state diagram of the use of a plate assembly for fixing long bones according to the present invention.

Figure 2 is a perspective view for explaining the plate assembly for fixing the long bones according to the present invention.

Figure 3 is an exploded perspective view for explaining the plate assembly for fixing long bones according to the present invention.

Figure 4 is a cross-sectional view for explaining the plate assembly for fixing the long bones according to the present invention.

5 is a view showing a plurality of plate extensions provided in various lengths.

6 is a view showing a plate extension provided in a curved shape with a predetermined curvature along the longitudinal direction, FIGS. 6 (a) and 6 (b) are views showing a plate extension provided in a convex shape in the upper direction, FIG. 6(c) and 6(d) are views showing a plate extension provided in a downwardly convex shape.

7 is a view showing a plate extension provided in a curved shape with a predetermined curvature along a lateral direction perpendicular to the longitudinal direction, FIGS. 7 (a) and 7 (b) are a plate extension provided in a convex shape in one direction 7(c) and 7(d) are views showing a plate extension provided in a convex shape in the other direction.

110 plate support 110a: screw hole

120: cylindrical insert 120a: through hole

130: plate extension 131: first plate extension

132: second plate extension 140: fixed cap

141: body 142: sliding recess

150: cable 160: compression screw

170: locking screw

As for the terms used in the present invention, general terms that are currently widely used as possible have been selected, but in certain cases, there are also terms arbitrarily selected by the applicant. So the meaning should be understood.

Hereinafter, the technical configuration of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Like reference numerals refer to like elements throughout.

1 is a state diagram of a plate assembly for fixing long bones according to an embodiment of the present invention, FIG. 2 is a perspective view for explaining the plate assembly for fixing long bones according to an embodiment of the present invention, FIG. 2 is an exploded perspective view, FIG. 4 is a cross-sectional view of FIG.

1 to 4 , the plate assembly for fixing long bones according to an embodiment of the present invention includes long bones including the femur, tibia, fibula, humerus, radius, and ulna of the leg. A device for bone fixation for fixing, including a plate support 110 , a cylindrical insert 120 , a plate extension 130 , and a fixing cap 140 .

The plate support part 110 is provided in a plate shape, and a plurality of screw holes 110a are formed in the vertical direction.

In addition, the plate support 110 may be made of a stainless-based alloy or a titanium-based alloy, and in the present invention, Ti6Al4V ELI (Extra Low Interstitial) alloy was used, but the material of the plate support 110 is limited thereto. it's not going to happen

The cylindrical insertion part 120 has a cylindrical shape with a through hole 120a formed in the central part, is integrally formed from one end of the plate support part 110, and is inserted into the long bone.

Here, the cylindrical insertion part 120 is provided to be inclined at a predetermined angle with the plate support part 110 .

The plate extension 130 is provided in the shape of a plate, a plurality of screw holes 131a are formed in the vertical direction, and one end is inserted into the other end of the plate support unit 110 to be assembled.

In addition, the plate extension part 130 is provided in plurality, and one end of the second plate extension part 132 is fitted to the other end of the first plate extension part 131 so as to be assembled.

For example, a fastening groove part 110b is formed at the other end of the plate support part 110 , and one end of the first plate extension part 131 and the second plate extension part 132 is integrally formed in the longitudinal direction. Extended

fastening recesses

131b and 132b are provided, respectively, and at the other ends of the first plate extended part 131 and the second plate extended part 132, a fastening groove part 131c into which the fastening recessed part can be fitted inwardly. , 132c) is provided.

Accordingly, the fastening recesses 131b and 132b of the first plate extension part 131 or the second plate extension part 132 are fitted into the fastening groove part 110b of the plate support part 110 to be assembled.

In addition, the fastening recess 132b of the second plate extension 132 may be fitted into the fastening groove 131c of the first plate extension 131 to be coupled, and The fastening recessed part 131b of the first plate extension part 131 is fitted into the fastening groove part 132c and can be coupled thereto.

In addition, a screw hole 131ba penetrating in the vertical direction may be formed in the fastening recess 131b of the first plate extension part 131 , and the first fastening groove part 110b of the plate support part 110 may be formed. When the fastening recessed part 131b of the plate extension part is inserted and assembled, the screw hole 131ba of the fastening recess 131b and the screw hole 110a located at the other end of the plate support part 110 communicate with one screw hole. .

In addition, a screw hole 131ba penetrating in the vertical direction may be formed in the fastening recess 132b of the second plate extension part 132 , and the second fastening groove part 110b of the plate support part 110 may be provided with the second screw hole 131ba. When the fastening recessed part 132b of the plate extension part is inserted and assembled, the screw hole 132ba of the fastening recess 132b and the screw hole 110a located at the other end of the plate support part 110 communicate with one screw hole. .

In addition, when the fastening recess 132b of the second plate extension 132 is inserted into the fastening groove 131c of the first plate extension 131 and assembled, the second plate extension 132 is fastened. The screw hole 132ba formed in the recess 132b and the screw hole 131a located at the other end of the first plate extension 131 communicate with one screw hole.

In addition, even when three or more of the plate extension parts 130 are provided, they may be coupled to each other in the same coupling method as described above.

Also, as shown in FIG. 5 , the

plate extension parts

131 , 132 , 133 , 134 , 135 and 136 may be provided with different lengths.

That is, the plate extension part 130 is inserted into the plate support part 110 in a Lego type and assembled to have a structure in which the overall length of the plate can be easily increased.

Accordingly, the plate assembly 100 for fixing long bones according to the present invention can be performed as a minimally invasive surgery that minimizes the incision, thereby reducing bleeding, post-operative pain and infection, and long-form bone union. By replacing the metal plate for use, it has the advantage of dramatically reducing the inventory for the product.

In addition, the plate extension 130 may be provided in a curved shape with a predetermined curvature from one end to the other end.

For example, as shown in FIG. 6 , the

plate extension parts

133 and 134 may be provided to be convex in an upper direction or a lower direction.

As another example, as shown in FIG. 7 , the

plate extension parts

133 and 134 may be provided to be convex in one direction or the other direction.

Here, the one side direction or the other side direction means a direction orthogonal to the vertical direction of the plate extension part.

That is, as shown in FIGS. 6(a) and 6(b), the plate extension part 130 has a convex upper surface and a concave lower surface, or FIG. 6(c). And as shown in FIG. 6(d), the lower surface may be provided in a convex shape and the upper surface may be provided in a concave shape.

In addition, as shown in FIGS. 7(a) and 7(b), the plate extension part 130 is provided in a convex shape on one side forming the thickness of the plate extension part 130, and the other side surface of the plate extension part 130 is convex. is provided in a concave shape or, as shown in FIGS. 7(c) and 7(d) , the other side may be provided in a convex shape and one side may be provided in a concave shape.

Accordingly, since the plate extension 130 provided in a shape corresponding to the shape of the stem of the femur can be selectively coupled to the plate support 110, it is possible to stably support the femur in various shapes. .

Also, the plate extension part 130 may be made of the same material as the plate support part 110 .

The fixing cap 140 is an assembly-type part for enabling an additional locking screw to be fastened in order to more firmly and stably fix the long bone, and includes a body portion 141 and a pair of sliding recesses 142 . is done by

Here, the body portion 141 is provided in the form of a plate, a screw hole 141a to which a locking screw can be fastened in the vertical direction is formed, and the pair of sliding recesses 142 is the body portion 141 . It is formed integrally extending from both sides of the other end.

In addition, a sliding groove portion 111 is provided on both ends of the plate support 110 to allow the pair of sliding recessed portions 142 to be fitted and coupled from one end to the other end direction, and the fixing cap 140 is the plate. It may be slidably fastened to the support 110 .

Also, the fixing cap 140 may be made of the same material as the plate support part 110 and the plate extension part 130 .

In addition, it is preferable that the central axis (a) of the through hole of the cylindrical insertion part 120 and the central axis (b) of the screw hole of the fixing cap 140 are parallel to each other.

This is to allow the compression screw inserted into the through hole 120a of the cylindrical insertion part 120 and the locking screw inserted into the screw hole 141a of the fixing cap 140 to be fixed to the iliac bone without engaging each other. am.

On the other hand, the plate assembly 100 for fixing the long bone according to the present invention can be provided as a single module product further comprising a cable 150, a compression screw (160, compression screw) and a locking screw (170, locking screw). have.

The cable 150 is an annular steel wire, and is tightened in a shape surrounding the outer side of the upper surface of the plate support part 110 or the plate extension parts 130 and the iliac bone, so that it is impossible to fix with a fixing screw or additional fixing If a means is necessary, it allows the long bone to be stably immobilized.

In addition, at least one locking groove part 100a is formed in the plate support part 110 at one corner of the upper surface, and at least one other side is formed in the other corner of the upper surface at a position corresponding to the one locking groove part 100a. A locking groove portion 100b may be formed, which allows the cable 150 to be caught in a pair of locking

groove portions

110a and 110b and to be fixed in a shape surrounding the long bone, making it more stable and easier to fix the long bone. can play a role

Also, similarly to the plate support 110 , at least one pair of engaging

grooves

100a and 100b may be formed in the upper side corners of the plate extensions 130 .

The compression screw 160 is fixedly installed in the long bone through the through hole 120a of the cylindrical insertion part 120 , and the locking screw 170 is installed through the screw hole 141a of the fixing cap 140 . It is additionally installed in the long bone.

Accordingly, since the plate assembly 100 for fixing the long bone according to the present invention can be fixed by not only the compression screw 160 fixed through the plate support 110, but also the additional locking screw 170, It is possible to firmly and stably fix the long bone.

In addition, even when fixing by screws is impossible, the long bone can be stably fixed using an annular cable (steel wire), and the length of the entire plate can be easily increased, so minimally invasive surgery that minimizes the incision site can be provided as a suitable product.

Furthermore, by replacing the long-form metal plate for bone fusion, there is an effect that can dramatically reduce the inventory of the product.

As described above, the present invention has been illustrated and described with reference to preferred embodiments, but it is not limited to the above-described embodiments, and those of ordinary skill in the art to which the present invention pertains within the scope not departing from the spirit of the present invention Various changes and modifications will be possible.

The plate assembly for fixing long bone according to the present invention can be used for the purpose of bone joining when bone diseases such as femur shaft fracture, proximal femur fracture, distal femur fracture, proximal long bone, shaft, distal fracture, and compound fracture occur. have.

Claims

Plate-shaped, a plate support in which a plurality of screw holes are formed in the vertical direction;

a cylindrical insertion part having a cylindrical shape having a through hole formed in the center, integrally extending from one end of the plate support part, inclined at a predetermined angle with the plate support part, and inserted into the long bone; and

A plate assembly for fixing long bones comprising a; plate-shaped, a plurality of screw holes are formed in the vertical direction, and one end is fitted to the other end of the plate support and is assembled.
The method of claim 1,

The plate extension portion is provided in plurality,

One end of each of the plate extensions is fitted to the other end of each of the plate extensions, and a plate assembly for fixing the long bones, characterized in that it is provided so as to be assembled.
3. The method of claim 2,

The plate extensions are plate assembly for fixing long bones, characterized in that provided with different lengths.
3. The method of claim 2,

One end of the plate extensions is provided with a fastening recess integrally extended in the longitudinal direction,

The other end of the plate support is provided with a fastening groove into which the fastening recess can be fitted inside,

The other end of the plate extension plate assembly for fixing the long bone, characterized in that provided with a fastening groove in which the fastening recess can be fitted inwardly.
5. The method of claim 4,

Screw holes penetrating in the vertical direction are formed in the fastening recesses of the plate extensions,

When the fastening recess of the plate extension part is inserted into the fastening groove part of the plate support part and assembled,

The screw hole of the fastening recess and the screw hole located at the other end of the plate support part are plate assembly for fixing long bones, characterized in that communicating with one screw hole.
6. The method of claim 5,

When the fastening recess of the second plate extension is inserted into the fastening groove of the first plate extension and assembled,

The screw hole of the fastening recessed portion and the screw hole located at the other end of the first plate extension plate assembly for fixing the long bone, characterized in that communicating with one screw hole.
3. The method of claim 2,

The plate support part or the plate extension parts have

At least one locking groove portion is formed on one side corner of the upper surface,

At least one other engaging groove is formed in the other corner of the upper surface at a position opposite to the one engaging groove,

Long bone fixing plate assembly, characterized in that it further comprises a; cable that can be fixed in the form of surrounding the long bone caught in the engaging groove.
The method of claim 1,

Further comprising; a body portion in which a screw hole is formed in the vertical direction in a plate shape and a fixing cap including a pair of sliding recesses integrally extending from both ends of the other end of the body portion in a bar shape;

A pair of sliding recesses are provided on both sides of one end of the plate support, and sliding grooves that can be coupled by being fitted from one end to the other end are provided,

The fixing cap is a plate assembly for fixing long bones, characterized in that the sliding fastening to the plate support.
9. The method of claim 8,

The central axis of the through-hole of the cylindrical insertion part and the central axis of the screw hole of the fixing cap are parallel to each other.
9. The method of claim 8,

a compression screw fixedly installed in the long bone through the through-hole of the cylindrical insertion part; and

The plate assembly for fixing the long bone, characterized in that it further comprises; a locking screw (locking screw) additionally installed in the long bone through the screw hole of the fixing cap.
3. The method of claim 2,

The plate extension plate assembly for fixing the long bone, characterized in that provided in a shape bent with a predetermined curvature from one end to the other end so as to correspond to the shape of the long bone.
12. The method of claim 11,

The plate extension plate assembly for fixing long bones, characterized in that provided in a convex shape toward the upper direction, the lower direction, one direction or the other direction.