CN204971543U - Angle type metal coaptation board - Google Patents

Abstract

The utility model provides an angle-type metal bone plate, which belongs to the field of orthopedic medical instruments, and comprises a steel plate and a sleeve arranged at the end of the steel plate. The inside of the sleeve is provided with a through hole arranged along the axial direction of the sleeve, and the through hole is close to the One end of the steel plate is the proximal end, and the end of the through hole far away from the steel plate is the far end. There is no thread inside the far end of the through hole. Limit screw. The utility model has a simple structure. In the design, a threaded area is provided inside the proximal end of the through hole. The threaded area is threaded to connect with a limit screw, which can effectively prevent the lag screw from loosening or shifting, or even come out. The bone setting effect is good, and the clinical use safety is high. .

Description

An angled metal bone plate

technical field

The utility model relates to the field of orthopedic medical instruments, in particular to an angle-type metal bone plate.

Background technique

Angled metal plate osteosynthesis is an important means of fracture treatment. At present, angled metal bone plates have been widely used in surgery. The existing angle-type bone plate is composed of a steel plate and a sleeve. There is a through hole in the sleeve, and the lag screw passes through the through hole. However, with the prolongation of use time, the lag screw is easy to loosen or shift, or even fall out. , affecting the effect of bone setting, and also causing hidden dangers to the patient's rehabilitation. Therefore, there is an urgent need to develop an angled metal bone plate with simple structure, reasonable design, convenient installation, effective prevention of lag screw loosening or displacement, or even prolapse, good osteosynthesis effect, and high clinical safety.

Contents of the invention

The problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a simple structure, reasonable design, convenient installation, which can effectively prevent the lag screw from loosening or displacement, or even prolapse, good bone setting effect, and high safety in clinical use. Angled metal plate.

In order to solve the above technical problems, the technical solution adopted by the utility model is: an angled metal bone plate, including a steel plate and a sleeve arranged at the end of the steel plate, and inside the sleeve is a through hole arranged along the axial direction of the sleeve. The end of the through hole close to the steel plate is the proximal end, the end of the through hole away from the steel plate is the far end, the distal end of the through hole is not threaded, and the proximal end of the through hole is provided with a threaded area , the threaded area is a T-shaped structure, and the threaded area is threaded with a limit screw.

Further, coarse internal threads and fine internal threads are distributed above and below the threaded area.

Further, the limit screw includes a nail body and a nail cap, the nail body is provided with a coarse external thread, the nail cap is provided with a fine external thread, and the coarse external thread and the coarse internal thread Matching, the fine-tooth external thread is adapted to the fine-tooth internal thread.

Further, the top of the nail cap is provided with a groove.

Further, the groove is cross-shaped, straight-shaped or quincunx-shaped.

Further, the angle formed between the steel plate and the sleeve is 95°, 130°, 135° or 140°.

Further, the material of the steel plate and the sleeve is Ti-6Al-4V, Ti-6Al-7Nb or 00Cr18Ni14Mo3.

Further, the steel plate is provided with staggered nail holes.

The advantages and positive effects that the utility model has are:

The utility model has a simple structure. In the design, a threaded area is provided inside the proximal end of the through hole. The threaded area is threaded to connect with a limit screw, which can effectively prevent the lag screw from loosening or shifting, or even come out. The bone setting effect is good and the clinical use safety is high. .

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1.

Fig. 2 is a schematic structural diagram of the second embodiment.

Fig. 3 is a schematic structural diagram of the third embodiment.

Fig. 4 is a structural schematic diagram of a limit screw and a lag screw located in the through hole of the sleeve.

Fig. 5 is a structural schematic diagram of a limit screw.

Fig. 6 is a sectional view of the sleeve.

In the figure: 1. Steel plate; 2. Sleeve; 3. Through hole; 4. Limit screw; 5. Nail body; 6. Nail cap; 7. Coarse external thread; 8. Fine external thread; 9. Coarse 10. Fine-toothed internal thread; 11. Groove; 12. Nail hole; 13. Lag screw.

detailed description

Embodiment one

As shown in Figures 1, 4, 5, and 6, an angled metal bone plate includes a steel plate 1 and a sleeve 2 arranged at the end of the steel plate 1, the material of the steel plate 1 and the sleeve 2 is Ti-6Al-4V, The steel plate 1 is provided with staggered nail holes 12, the angle between the steel plate 1 and the sleeve 2 is 95°, and the inside of the sleeve 2 is provided with a through hole 3 arranged along the axial direction of the sleeve 2, and the through hole 3 is close to One end of the steel plate 1 is the proximal end, the end of the through hole 3 away from the steel plate 1 is the distal end, the lag screw 13 passes through the through hole 3, the head of the lag screw 13 is located at the far end of the through hole 3, and the distal end of the through hole 3 is inside There is no thread setting, the proximal end of the through hole 3 is provided with a threaded area of T-shaped structure, and the upper and lower parts of the threaded area are distributed with coarse internal threads 9 and fine internal threads 10, and the threaded area is threadedly connected with a limit screw 4, limiting The bit screw 4 includes a nail body 5 and a nail cap 6, the nail body 5 is provided with a coarse external thread 7, the nail cap is provided with a fine external thread 8, the coarse external thread 7 is compatible with the coarse internal thread 9, The fine-tooth external thread 8 matches the fine-tooth internal thread 10 , and the top of the nail cap 6 is provided with a cross-shaped groove 11 .

The working process of this embodiment: when in use, pass the lag screw 13 through the through hole 3, the head of the lag screw 13 is located at the far end of the through hole 3, screw the limit screw 4 into the proximal end of the through hole 3, and the coarse thread The external thread 7 is compatible with the coarse internal thread 9, the fine external thread 8 is compatible with the fine internal thread 10, the end of the nail body 5 of the limit screw 4 is in contact with the top of the lag screw 13, and it is Press tight. The utility model has a simple structure, can effectively prevent the lag screw 13 from loosening or displacement, or even prolapse, has good osteosynthesis effect, and has high safety in clinical use.

Embodiment two

As shown in Figures 2, 4, 5, and 6, an angled metal bone plate includes a steel plate 1 and a sleeve 2 arranged at the end of the steel plate 1, the material of the steel plate 1 and the sleeve 2 is Ti-6Al-7Nb, The steel plate 1 is provided with staggered nail holes 12, the angle between the steel plate 1 and the sleeve 2 is 135°, and the inside of the sleeve 2 is provided with a through hole 3 arranged along the axial direction of the sleeve 2, and the through hole 3 is close to One end of the steel plate 1 is the proximal end, the end of the through hole 3 away from the steel plate 1 is the distal end, the lag screw 13 passes through the through hole 3, the head of the lag screw 13 is located at the far end of the through hole 3, and the distal end of the through hole 3 is inside There is no thread setting, the proximal end of the through hole 3 is provided with a threaded area of T-shaped structure, and the upper and lower parts of the threaded area are distributed with coarse internal threads 9 and fine internal threads 10, and the threaded area is threadedly connected with a limit screw 4, limiting The bit screw 4 includes a nail body 5 and a nail cap 6, the nail body 5 is provided with a coarse external thread 7, the nail cap is provided with a fine external thread 8, the coarse external thread 7 is compatible with the coarse internal thread 9, The fine-tooth external thread 8 is compatible with the fine-tooth internal thread 10 , and the top of the nail cap 6 is provided with an inline groove 11 .

The working process of the present embodiment: the same as embodiment one.

Embodiment Three

As shown in Figures 3, 4, 5, and 6, an angled metal bone plate includes a steel plate 1 and a sleeve 2 arranged at the end of the steel plate 1. The material of the steel plate 1 and the sleeve 2 is 00Cr18Ni14Mo3. There are staggered nail holes 12, the angle between the steel plate 1 and the sleeve 2 is 140°, the inside of the sleeve 2 is provided with a through hole 3 along the axial direction of the sleeve 2, and the through hole 3 is close to one end of the steel plate 1 is the proximal end, the end of the through hole 3 away from the steel plate 1 is the far end, the lag screw 13 passes through the through hole 3, the head of the lag screw 13 is located at the far end of the through hole 3, and the distal end of the through hole 3 is not threaded. The proximal end of the through hole 3 is provided with a threaded area of T-shaped structure, and the upper and lower parts of the threaded area are distributed with coarse internal threads 9 and fine internal threads 10, and the threaded area is threadedly connected with a limit screw 4, which includes The nail body 5 and the nail cap 6, the nail body 5 is provided with a coarse-tooth external thread 7, the nail cap is provided with a fine-tooth external thread 8, the coarse-tooth external thread 7 is compatible with the coarse-tooth internal thread 9, and the fine-tooth external thread 8 is compatible with the fine tooth internal thread 10, and the top of the nail cap 6 is provided with an inline groove 11.

The working process of the present embodiment: the same as embodiment one.

The embodiments of the present utility model have been described in detail above, but the content described is only a preferred example of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (8)

1. An angled metal bone plate, characterized in that: it comprises a steel plate and a sleeve arranged at the end of the steel plate, the inside of the sleeve is provided with a through hole arranged axially along the sleeve, and the through hole is close to the end of the steel plate One end is the proximal end, the end of the through hole away from the steel plate is the distal end, the distal end of the through hole is not threaded, the proximal end of the through hole is provided with a threaded area, and the threaded area is a T-shaped structure , the threaded area is threadedly connected with a limit screw. 2. An angled metal bone plate according to claim 1, characterized in that: the upper and lower sides of the threaded area are distributed with coarse internal threads and fine internal threads. 3. An angled metal bone plate according to claim 1 or 2, characterized in that: the limit screw includes a nail body and a nail cap, the nail body is provided with a coarse external thread, and the screw The cap is provided with a fine-tooth external thread, and the coarse-tooth external thread is adapted to the coarse-tooth internal thread, and the fine-tooth external thread is adapted to the fine-tooth internal thread. 4. The angled metal bone plate according to claim 3, wherein a groove is provided on the top of the nail cap. 5 . The angled metal bone plate according to claim 4 , wherein the groove is in the shape of a cross, a straight line or a quincunx. 6 . 6 . The angled metal bone plate according to claim 1 , wherein the angle between the steel plate and the sleeve is 95°, 130°, 135° or 140°. 7. An angled metal bone plate according to claim 1, characterized in that: the material of the steel plate and the sleeve is Ti-6Al-4V, Ti-6Al-7Nb or 00Cr18Ni14Mo3. 8. An angled metal bone plate according to claim 1, characterized in that: said steel plate is provided with staggered nail holes.