Locking structure of locking screw and bone fracture plate

Abstract

The utility model discloses a locking screw and bone fracture plate locking structure, which comprises a screw and a bone fracture plate, the screw comprises a fixing screw and an adjusting screw, the bone fracture plate is symmetrically arranged, the bone fracture plate comprises a first plate body and a second plate body, the center of the surface of the first plate body and the center of the surface of the second plate body are respectively and fixedly provided with a screw joint block, and the screw joint blocks are connected with the first plate body and the second plate body. The screw joint block is of a cuboid structure, a vertical penetrating hole and a transverse penetrating hole are formed in the screw joint block and are perpendicular to each other, an internal thread is arranged in the transverse penetrating hole of the screw joint block in the center of the first plate body, and the internal thread is matched with a thread of the adjusting screw. By screwing the adjusting screw, the first plate body is driven to be close to the second plate body for pressurization, so that the fracture line is closed, and in the treatment process, a doctor can regularly adjust the pressure so as to ensure that the pressure applied to the fracture part is appropriate, and the possibility of compression necrosis of the fracture end caused by overlarge pressure is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a locking structure of a locking screw and a bone plate. Background Art

[0002] Bone plate is a plate-shaped fracture internal fixation device with holes. It is often used in conjunction with bone screws or bone wires in clinical practice, and is divided into two categories: ordinary bone plate and pressurized bone plate. The pressurized bone plate can realize pressurized locking of the fracture site through the internal mechanical structure, ensure the stability of the fracture site, and promote fracture healing. Currently, pressurized bone plates are often used to fix the fracture site for transverse or short oblique fractures. However, the pressurized bone plates commonly used in clinical practice in the past may cause excessive pressure to cause compression necrosis of the fracture end after installation due to the unadjustable pressure, which affects the growth of callus, eliminates the physiological stress of the bone, and has a stress protection effect. The bone cortex may shrink and become thinner as a result, and re-fracture may occur easily after the bone plate is removed. Therefore, the utility model proposes a locking structure of a locking screw and a bone plate, which can adjust the pressure to close the fracture line. At the same time, during the treatment process, the doctor can adjust the pressure regularly to ensure that the pressure applied to the fracture site is appropriate to prevent the possibility of compression necrosis of the fracture end caused by excessive pressure.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking structure of a locking screw and a bone plate, comprising a screw and a bone plate, the screw comprising a fixing screw and an adjusting screw, the bone plate being symmetrically arranged, the bone plate comprising a first plate body and a second plate body, screw blocks are fixed at the centers of the surfaces of the first plate body and the second plate body, the screw blocks are rectangular structures, vertical through holes and transverse through holes are respectively provided inside the screw blocks, the vertical through holes and the transverse through holes are vertically arranged, the transverse through holes of the screw blocks at the center of the first plate body are provided with internal threads, the internal threads are adapted to the threads of the adjusting screw, and the surfaces of the first plate body and the second plate body on both sides of the screw blocks are provided with fixing through holes.

[0005] As a preferred technical solution of the present invention, the first plate body and the second plate body are both fixed to the bone by fixing screws.

[0006] As a preferred technical solution of the utility model, the first plate body and the second plate body of the bone fracture plate are arranged and fixed on both sides of the bone fracture.

[0007] As a preferred technical solution of the utility model, the bone plate is an overall T-shaped structure, and the first plate body and the second plate body are respectively an integrally formed structure with the screw block.

[0008] As a preferred technical solution of the present invention, convex parts are arranged on the side surfaces of the fixing holes of the first plate body and the second plate body.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model is suitable for transverse and short oblique fractures, and the first plate body and the second plate body are respectively fixed on both sides of the fracture point by fixing screws, and the first plate body is driven to move closer to the second plate body and pressurize by turning the adjusting screw to close the fracture line. During the treatment process, the doctor can adjust the pressure regularly to ensure that the pressure applied to the fracture is appropriate, and to prevent the possibility of compression necrosis of the fracture end caused by excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the first plate body and the second plate body in the utility model;

[0013] In the figure: 1. fixing screw; 2. adjusting screw; 3. first plate body; 4. second plate body; 5. screw block; 6. vertical through hole; 7. horizontal through hole; 8. internal thread; 9. fixing through hole; 10. convex part. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Example

[0016] See also Figure 1-2The utility model provides the following technical solutions: a locking structure of a locking screw and a bone plate, comprising a screw and a bone plate, the screw comprising a fixing screw 1 and an adjusting screw 2, the bone plate being symmetrically arranged, the bone plate comprising a first plate body 3 and a second plate body 4, a screw block 5 being fixed at the center of the surface of the first plate body 3 and the second plate body 4, the screw block 5 being a rectangular parallelepiped structure, a vertical through hole 6 and a horizontal through hole 7 being respectively opened inside the screw block 5, the vertical through hole 6 and the horizontal through hole 7 being vertically arranged, an internal thread 8 being arranged inside the horizontal through hole 7 of the screw block 5 at the center of the first plate body 3, the internal thread 8 being adapted to the thread of the adjusting screw 2, the first plate body 3 and the second The surfaces of the plate body 4 on both sides of the screw block 5 are provided with fixing through holes 9, and the first plate body 3 and the second plate body 4 are fixed to the bone by fixing screws 1. The first plate body 3 and the second plate body 4 of the bone plate are arranged and fixed on both sides of the bone fracture. In this embodiment, the first plate body 3 and the second plate body 4 are respectively fixed to both sides of the fracture point by fixing screws 1, and the adjusting screw 2 is turned to drive the first plate body 3 to move closer to the second plate body 4 and apply pressure to close the fracture line. During the treatment process, the doctor can adjust the pressure regularly to ensure that the pressure applied to the fracture is appropriate to prevent the possibility of compression necrosis of the fracture end caused by excessive pressure.

[0017] In order to ensure the overall strength of the bone plate, in this embodiment, as a preferred technical solution of the utility model, the bone plate is an overall T-shaped structure, and the first plate body 3 and the second plate body 4 are respectively integrally formed with the screw block 5.

[0018] In order to reduce the contact area between the plate body and the periosteum and facilitate fracture recovery, in this embodiment, as a preferred technical solution of the utility model, convex portions 10 are provided on the sides of the fixing holes 9 of the first plate body 3 and the second plate body 4.

[0019] In summary, with the help of the above-mentioned technical scheme of the utility model, when in use, the fracture is reset by the reduction forceps, the adjusting screw 2 is loosened, the distance between the first plate 3 and the second plate 4 is pulled apart and adjusted to a certain extent, and the first plate 3 and the second plate 4 are fixed on both sides of the fracture line to keep the positions collinear, and then the guide and the drill are used to drill and tap the neutral position on both sides of the bone fracture site at the positions of the fixed perforations 9 of the first plate 3 and the second plate 4, and then the fixing screw 1 is screwed in and tightened to fix the first plate 3 and the second plate 4, so as to ensure that the plates and the bone fracture site are stably connected on both sides, and then in order to determine the pressure on the fracture site, the adjusting screw 2 is turned so that the adjusting screw 2 uses the internal thread 8 in the transverse perforation 7 of the screw block 5 of the first plate 3 to drive the first plate 3 to move closer to the second plate 4 and apply pressure to close the fracture line, and at the same time, the pressure will stimulate the fracture site, activate the proliferation of bone cells and bone regeneration, and during the treatment process, the doctor can adjust the pressure regularly to ensure that the pressure applied to the fracture site is appropriate to prevent the possibility of compression necrosis of the fracture end caused by excessive pressure.

[0020] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0021] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A locking structure of a locking screw and a bone plate, comprising a screw and a bone plate, characterized in that: The screw comprises a fixing screw (1) and an adjusting screw (2); the bone plate is symmetrically arranged; the bone plate comprises a first plate body (3) and a second plate body (4); a screw block (5) is fixed at the center of the surface of the first plate body (3) and the second plate body (4); the screw block (5) is a rectangular parallelepiped structure; a vertical through hole (6) and a transverse through hole (7) are respectively provided inside the screw block (5); the vertical through hole (6) and the transverse through hole (7) are vertically arranged; an internal thread (8) is provided inside the transverse through hole (7) of the screw block (5) at the center of the first plate body (3); the internal thread (8) and the thread of the adjusting screw (2) are matched; the surfaces of the first plate body (3) and the second plate body (4) on both sides of the screw block (5) are provided with fixing through holes (9).

2. A locking structure of a locking screw and a bone plate according to claim 1, characterized in that: The first plate body (3) and the second plate body (4) are both fixed on the bone by means of fixing screws (1).

3. The locking structure of a locking screw and a bone plate according to claim 1, characterized in that: The first plate body (3) and the second plate body (4) of the bone fracture plate are arranged and fixed on both sides of the bone fracture.

4. The locking structure of a locking screw and a bone plate according to claim 1, characterized in that: The bone fracture plate is an overall T-shaped structure, and the first plate body (3) and the second plate body (4) are integrally formed structures with the screw connection block (5).

5. The locking structure of a locking screw and a bone plate according to claim 1, characterized in that: The side surfaces of the first plate body (3) and the second plate body (4) at the fixed through holes (9) are both provided with convex portions (10).

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