CN207125782U - A kind of internal fixation steel plate of anti-bending - Google Patents

Abstract

The utility model relates to an anti-bending internal fixed steel plate, which comprises a steel plate body (1), and the longitudinal section of the steel plate body (1) is a part of an isosceles triangle with three corners removed. The utility model improves the shape of the steel plate to form a slightly thicker shape in the middle and slightly thinner at both ends, so that the steel plate becomes a triangular-like cross-section on the longitudinal cross-section. It is less likely to be bent and broken under the action, and the stability and fixation strength of the fracture end are increased.

Description

Anti-bending internal fixation steel plate

technical field

The utility model relates to the field of technical medical equipment, in particular to an anti-bending internal fixation steel plate.

Background technique

Steel plate is a very commonly used surgical instrument in orthopedic clinics. The fracture end is fixed by the plate to stabilize the fracture end and finally achieve the purpose of healing. The commonly used steel plate is cuboid, and its longitudinal section is rectangular (as shown in Figure 1A-B). Longitudinal bending leads to instability of the fractured end and even the risk of fracture.

Chinese patent 201310615416.X discloses a knee joint platform steel plate. The steel plate is Z-shaped as a whole and consists of a steel plate head, a plate body and a steel plate tail. The steel plate head and the steel plate tail are rotationally symmetrical with a rotation angle of 180 degrees. The steel plate head and the steel plate tail are respectively provided with several through holes; the thickness of the plate body is greater than the thickness of the steel plate head and the steel plate tail; the two sides of the plate body are provided with grooves; the number of said through holes is three; the steel plate The edges of the head and the tail of the steel plate are arc-shaped; the steel plate of this technical solution is also T-shaped, but when in use, its longitudinal section is still rectangular, which cannot effectively avoid the risk of bending of the steel plate at the fracture end. Chinese patent 201210002010.X discloses a curved trapezoidal locking plate for the treatment of femoral neck fractures. Radian, the trapezoidal locking steel plate center position is provided with a central hole, the trapezoidal locking steel plate is set with 6 locking holes, the directions of the 6 locking holes and the central hole are parallel to each other, with the central hole as the center, the 6 locking holes are at the upper end and the lower left The three directions of the end and the lower right end are divergently arranged, and two locking holes are arranged in each direction, and locking screws are arranged on the locking holes; although the thickness of the plate body (fracture end) of the plate is greater than that of the fixed end (head and tail) , but the connection between the board body and the head and tail is relatively thin, and it is still prone to breakage under the action of external force during use. Therefore, in view of the shortcomings of the prior art, it is necessary to improve the structural shape of the steel plate so that it is less likely to be bent and broken under the action of an external force and to increase the stability.

Contents of the invention

Therefore, according to clinical needs, we improved the shape of the steel plate to form a shape with a slightly thicker middle and slightly thinner ends, so that the steel plate becomes a triangle in the longitudinal section, and the stability of the triangle is better than that of a rectangle, making it It is not easy to bend and break under the action of external force, which increases stability.

The purpose of the utility model is to provide an anti-bending inner fixed steel plate for the deficiencies in the prior art.

In order to achieve the above object, the technical scheme that the utility model takes is:

An anti-bending internal fixed steel plate, comprising a steel plate body (1), the longitudinal section of the steel plate body (1) is a part of an isosceles triangle with three corners removed, the longitudinal section of the steel plate body (1) The thickness of the middle part is greater than the thickness of its two ends; the angle between the hypotenuse and the base of the isosceles triangle is 5-30 degrees; the longitudinal section of the steel plate body (1) includes a lower edge (18) that is fixed in contact with the fracture site. ), and the upper edge (17) parallel to the lower edge (18), the ratio between the length of the lower edge (18) and the length of the upper edge (17) is 2:1 to 10:1; the steel plate body (1) is The strip shape is composed of an upper fixing section (2), a plug-in section (3) and a lower fixing section (4); the surface of the steel plate body (1) is provided with raised ribs (5), and the reinforcement The ribs increase the ability of the steel plate to resist bending and breaking to prevent the steel plate from breaking; the upper fixing section (2) is provided with a number of fixing nail holes (6), and the lower end surface of the upper fixing section (2) is provided with an upper fitting groove (7), a first connecting hole (8) is provided on the surface of the upper fixing section (2) corresponding to the upper fitting groove (7), and the first connecting hole (8) runs through the upper fitting groove (7); The insertion section (3) is composed of a fitting block (9) and a connecting section (10), the fitting block (9) matches with the upper fitting groove (7), and the fitting block (9) is provided with There is a second connecting hole (11), the width of the connecting section (10) is the same as that of the upper fixing section (2), the lower end surface of the connecting section (10) is provided with a fitting groove (12), and the fitting groove (12) ) The surface of the corresponding connecting section (10) is provided with a third connecting hole (13), and the third connecting hole (13) runs through the fitting groove (12); the lower fixing section (4) is formed by the lower fitting block (14) and the lower fixed steel plate (15), the lower fitting block (14) is matched with the fitting groove (12), and the fourth connecting hole (16) is provided on the lower fitting block (14). The width of the lower fixed steel plate (15) is the same as that of the upper fixed section (2), and the surface of the lower fixed steel plate (15) is provided with some fixing nail holes (6)

Further, the connecting holes and fixing nail holes (6) run through the reinforcing rib (5).

Further, each steel plate body (1) is provided with 2-5 plug-in sections (3), and two adjacent plug-in sections (3) are inserted into the fitting groove (11) The chimeric blocks (9) are connected at the first place.

Further, the fixing nail holes (6) are provided with threads, and the screws are installed through the threads; the connecting holes are provided with threads, and the screws are installed through the threads.

Further, the reinforcing rib is arranged in the middle of the upper surface of the steel plate body (1), and the reinforcing rib is arranged parallel to the long axis direction of the steel plate body (1).

The utility model has the advantages that:

1. The utility model improves the shape of the steel plate to form a slightly thicker shape in the middle and slightly thinner at both ends, so that the steel plate becomes a triangular-like cross-section on the longitudinal section, and the stability of the triangle is better than that of the rectangle, making it It is less likely to be bent and broken under the action of external force, which increases the stability and fixation strength of the fracture end.

2. The triangular design of the steel plate section can reduce the fretting of the fixed plate after surgery, reduce the risk of plate breakage, and is conducive to bone healing and postoperative recovery of patients.

3. The steel plate body of the utility model is composed of an upper fixation section, an insertion section and a lower fixation section; the length of the steel plate can be adjusted according to the needs of the operation during use, which simplifies the fracture reduction and fixation operation, shortens the operation time, and relieves the pain of the patient.

4. The surface of the steel plate body of the utility model is provided with raised reinforcing ribs, and the reinforcing ribs are arranged in the middle of the upper surface of the steel plate body, and the reinforcing ribs are arranged parallel to the long axis of the steel plate body. The ability to bend and break, prevent raw bending and breaking, and have greater stability.

Description of drawings

Accompanying drawing 1 is the structure diagram of prior art fixed steel plate. 1A is a schematic diagram of the longitudinal section of the steel plate before it is broken, and FIG. 1B is a schematic diagram of the longitudinal section of the steel plate after it is broken.

Accompanying drawing 2 is the structure schematic diagram of the internal fixed steel plate of the utility model. 2A is a schematic view of the longitudinal section of the fixed steel plate, and FIG. 2B is a schematic view of the use state.

Accompanying drawing 3 is a schematic diagram of the improved structure of the internal fixing steel plate of the present invention.

Accompanying drawing 4 is the schematic diagram of the internal fixed steel plate of the utility model after dismantling. Figure 4A is the upper fixing section, Figure 4B is the plug-in section, and Figure 4C is the lower fixing section.

Accompanying drawing 5 is the plan view of Fig. 4A.

Accompanying drawing 6 is the plan view of Fig. 4B.

Accompanying drawing 7 is the plan view of Fig. 4C.

Detailed ways

Below in conjunction with specific embodiment, further elaborate the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the contents of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

The reference signs and components involved in the accompanying drawings are as follows:

1. Steel plate body 2. Upper fixing section 3. Inserting section

4. Lower fixing section 5. Rib 6. Fixing nail hole

7. Upper fitting groove 8. First connecting hole 9. Fitting block

10. Connecting section 11. Second connecting hole 12. Fitting groove

13. The third connecting hole 14. Lower fitting block 15. Lower fixed steel plate

16. Fourth connection hole 17. Upper side 18. Lower side

Embodiment 1 The utility model anti-bending inner fixed steel plate

See Figure 1-Figure 2. Fig. 1 is a structural schematic diagram of a fixed steel plate in the prior art. 1A is a schematic diagram of the longitudinal section of the steel plate before it is broken, and FIG. 1B is a schematic diagram of the longitudinal section of the steel plate after it is broken. Fig. 2 is a structural schematic diagram of the internal fixed steel plate of the present invention. 2A is a schematic view of the longitudinal section of the fixed steel plate, and FIG. 2B is a schematic view of the use state.

An anti-bending internal fixed steel plate, comprising a steel plate body 1, the longitudinal section of the steel plate body 1 is a part of an isosceles triangle with three corners removed, and the included angle between the hypotenuse and the base of the isosceles triangle is 5-30 degrees, the longitudinal section of the steel plate body 1 includes a lower edge 18 fixed in contact with the fracture site, and an upper edge 17 parallel to the lower edge 18, and the ratio between the length of the lower edge 18 and the length of the upper edge 17 is 2: 1～10:1. The steel plate body 1 is provided with a number of evenly distributed fixing nail holes, and the fixing nail holes are provided with threads, through which screws are installed. The surface of the steel plate body 1 is provided with reinforcing ribs, the reinforcing ribs are arranged in the middle of the upper surface of the steel plate body 1, the reinforcing ribs are arranged parallel to the long axis of the steel plate body 1, and the reinforcing ribs increase the ability of the steel plate to resist bending and breaking , to prevent the steel plate from breaking. The utility model improves the shape of the fixed steel plate, so that the thickness of the middle part of the longitudinal section of the steel plate is greater than the thickness of both ends, so that deformation is not easy to occur during use, and the stability and fixing strength of the fracture end are increased.

The steel plate commonly used in the prior art is a cuboid, and its longitudinal section is rectangular as shown in Figure 1. The longer the steel plate, the longer its moment arm, and the greater the force borne by the middle part of the steel plate. Under the action of a strong external force, it will have longitudinal Bending, resulting in unstable fracture ends, and even the risk of breaking.

According to clinical needs, the utility model improves the shape of the steel plate to form a shape with a slightly thicker middle and slightly thinner ends, so that the steel plate becomes a triangle on the longitudinal section, and the stability of the triangle is better than that of a rectangle. It is not easy to bend and break under the action of external force, and increases the stability of fracture end fixation.

Embodiment 2 The improved structure of the utility model

See Figures 3-7. Fig. 3 is a schematic diagram of the improved structure of the internal fixed steel plate of the present invention, and Fig. 4 is a schematic diagram of the disassembled internal fixed steel plate of the present utility model, wherein Fig. 4A is the upper fixed section, Fig. 4B is the plug-in section, and Fig. 4C is the lower fixed section, FIG. 5 is a top view of FIG. 4A , FIG. 6 is a top view of FIG. 4B , and FIG. 7 is a top view of FIG. 4C .

An anti-bending internal fixed steel plate, comprising a steel plate body 1, the longitudinal section of the steel plate body 1 is a part of an isosceles triangle with three corners removed, and the included angle between the hypotenuse and the base of the isosceles triangle is 5-30 degrees, the longitudinal section of the steel plate body 1 includes a lower edge 18 fixed in contact with the fracture site, and an upper edge 17 parallel to the lower edge 18, and the ratio between the length of the lower edge 18 and the length of the upper edge 17 is 2:1 ~10:1. The left and right end faces of the steel plate body 1 are parallel. The steel plate body 1 is provided with a number of evenly distributed fixing nail holes, and the fixing nail holes are provided with threads, through which screws are installed. The surface of the steel plate body 1 is provided with raised reinforcing ribs 5, the reinforcing ribs 5 are arranged in the middle of the upper surface of the steel plate body 1, and the reinforcing ribs are arranged parallel to the long axis of the steel plate body 1, and the reinforcing ribs increase the resistance of the steel plate. The ability to bend and break prevents the steel plate from breaking. The steel plate body 1 is a curved strip and is composed of an upper fixing section 2, an insertion section 3 and a lower fixing section 4; the upper fixing section 2 is provided with a number of fixing nail holes 6, and the upper fixing section 2 An upper fitting groove 7 is provided on the lower end surface, and a first connecting hole 8 is formed on the surface of the upper fixing section 2 corresponding to the upper fitting groove 7 , and the first connecting hole 8 penetrates the upper fitting groove 7 . The insertion section 3 is composed of a fitting block 9 and a connecting section 10, the fitting block 9 is matched with the upper fitting groove 7, the fitting block 9 is provided with a second connecting hole 11, and the connecting section 10 The width of the upper fixing section 2 is the same, the lower end surface of the connecting section 10 is provided with a fitting groove 12, and the surface of the connecting section 10 corresponding to the fitting groove 12 is provided with a third connecting hole 13, and the third connecting hole 13 runs through Fitting groove 12. The lower fixing section 4 is composed of a lower fitting block 14 and a lower fixing steel plate 15. The lower fitting block 14 is matched with the fitting groove 12, and the lower fitting block 14 is provided with a fourth connection hole 16. The width of the lower fixed steel plate 15 is the same as that of the upper fixed section 2 , and the surface of the lower fixed steel plate 15 is provided with several fixing nail holes 6 . Each steel plate body 1 is provided with 2-5 plug-in sections 3, and two adjacent plug-in sections 3 are connected at the first place by inserting the fitting blocks 9 in the fitting grooves 12; One connection hole 8, the second connection hole 11, the third connection hole 13 and the fixing nail hole 6 run through the reinforcing rib 5, the fixing nail hole 6 has threads, the connection holes have threads, and the screws are installed through the threads . The steel plate body 1 is in the shape of a curved strip, and the design of the curved strip can prevent the bending of the steel plate in the direction of the long axis, better realize the fixation of the fracture site, and facilitate the healing of the fracture site. The setting of the plug-in section 3 enables the steel plate of the present invention to adjust the length of the steel plate according to the needs of the operation, simplifies the fracture reduction and fixation operation, shortens the operation time, and relieves the pain of the patient.

The usage method of this embodiment: when using, first measure the length of the required fixed plate according to the size and location of the patient’s fracture, select an appropriate number of inserting sections and assemble them with the upper and lower fixed sections, and first use the bone nail to pass through Fixing nail hole 6 fixedly connects upper fixing section 2 with the upper end of the fracture site; inserts fitting block 9 of insertion section 3 into upper fitting groove 7, aligns second connecting hole 11 with first connecting hole 8, and uses The bone nail passes through the second connection hole 11 and the first connection hole 8, and the insertion section 3 is fixedly connected with the upper fixation section 2 and the fracture site, and the remaining insertion section 3 is passed through the fixed insertion section 3. The fitting block 9 inserted in the fitting groove 12 realizes the first connection, and the third connecting hole 13 is aligned with the second connecting hole 11 and fixedly connected with a bone screw; the lower fitting block 14 is inserted into the last inserting section 3. Align the third connection hole 13 with the fourth connection hole 16 in the joint groove 12, and use bone nails to pass through the third connection hole 13 and the fourth connection hole 16 to fix and connect the lower fixing section 4 with the insertion section 3 and the fracture site , pass the fixing nail hole 6 on the lower fixing steel plate 15 with the bone nail at last and fix the lower fixing steel plate 15 on the lower end of the fracture site, and complete the operation.

Beneficial effect:

1. The utility model improves the shape of the steel plate to form a slightly thicker shape in the middle and slightly thinner at both ends, so that the steel plate becomes a triangular-like cross-section on the longitudinal section, and the stability of the triangle is better than that of the rectangle, making it It is less likely to be bent and broken under the action of external force, which increases the stability and fixation strength of the fracture end.

2. The triangular design of the steel plate section can reduce the fretting of the fixed plate after surgery, reduce the risk of plate breakage, and is conducive to bone healing and postoperative recovery of patients.

3. The steel plate body of the utility model is composed of an upper fixation section, an insertion section and a lower fixation section; the length of the steel plate can be adjusted according to the needs of the operation during use, which simplifies the fracture reduction and fixation operation, shortens the operation time, and relieves the pain of the patient.

4. The surface of the steel plate body of the utility model is provided with raised reinforcing ribs, and the reinforcing ribs are arranged in the middle of the upper surface of the steel plate body, and the reinforcing ribs are arranged parallel to the long axis of the steel plate body. The ability to bend and break, prevent raw bending and breaking, and have greater stability.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the premise of the utility model method, some improvements and supplements can also be made, and these improvements and supplements also It should be regarded as the protection scope of the present utility model.

Claims (5)

1. An anti-bending internal fixed steel plate, comprising a steel plate body (1), is characterized in that the longitudinal section of the steel plate body (1) is a part of an isosceles triangle with three corners removed, and the steel plate The thickness of the middle part of the longitudinal section of the body (1) is greater than the thickness of its two ends; the angle between the hypotenuse and the base of the isosceles triangle is 5-30 degrees; the longitudinal section of the steel plate body (1) includes contact with the fixed lower edge (18), and the upper edge (17) parallel to the lower edge (18), the ratio between the length of the lower edge (18) and the length of the upper edge (17) is 2:1 to 10:1; the steel plate The plate body (1) is strip-shaped and consists of an upper fixing section (2), an inserting section (3) and a lower fixing section (4); the surface of the steel plate body (1) is provided with raised reinforcing ribs ( 5), the reinforcing rib increases the ability of the steel plate to resist bending and breaking, and prevents the steel plate from breaking; the upper fixing section (2) is provided with a number of fixing nail holes (6), and the lower end surface of the upper fixing section (2) An upper fitting groove (7) is provided, and a first connecting hole (8) is provided on the surface of the upper fixing section (2) corresponding to the upper fitting groove (7), and the first connecting hole (8) penetrates the upper fitting Groove (7); the inserting section (3) is composed of a fitting block (9) and a connecting section (10), and the fitting block (9) is matched with the upper fitting groove (7), and the fitting The block (9) is provided with a second connection hole (11), the width of the connection section (10) is the same as that of the upper fixing section (2), and the lower end surface of the connection section (10) is provided with a fitting groove (12), A third connecting hole (13) is provided on the surface of the connecting section (10) corresponding to the fitting groove (12), and the third connecting hole (13) runs through the fitting groove (12); the lower fixing section (4 ) consists of a lower fitting block (14) and a lower fixed steel plate (15), the lower fitting block (14) matches the fitting groove (12), and the lower fitting block (14) is provided with a fourth connection hole (16), the width of the lower fixed steel plate (15) is the same as that of the upper fixed section (2), and the surface of the lower fixed steel plate (15) is provided with several fixed nail holes (6) 2 . The anti-bending internal fixation steel plate according to claim 1 , characterized in that, the connection holes and the fixing nail holes ( 6 ) run through the reinforcing rib ( 5 ). 3. The anti-bending internal fixing steel plate according to claim 1, characterized in that, each steel plate body (1) is provided with 2-5 plug-in segments (3), and two adjacent plug-in segments The segments (3) are first connected by the fitting blocks (9) inserted in the fitting grooves (12). 4. According to the anti-bending internal fixed steel plate of claim 1, it is characterized in that, there are threads on the said fixing nail hole (6), and the screws are installed through the threads; screw. 5. The anti-bending internal fixing steel plate according to claim 1, characterized in that, the reinforcing rib is arranged in the middle of the upper surface of the steel plate body (1), and the reinforcing rib is arranged parallel to the long axis direction of the steel plate body (1) .