Fracture internal locking and fixing nail plate device

Abstract

The utility model relates to a locking and fixing nail plate device in fracture, which comprises a titanium plate and two groups of titanium nail components respectively arranged at two ends of the titanium plate, the titanium plate is further provided with a plurality of degradable magnesium implants, and the plurality of degradable magnesium implants are all arranged among the titanium nail components. The titanium plate is used as the bone fracture plate, the titanium nail is used as the bone fracture nail, and the magnesium implant is arranged in the middle of the titanium plate, so that the magnesium implant can correspond to the position of a fracture area, the magnesium element can directly act on the fracture area after being released, and the fracture healing effect is improved; moreover, compared with magnesium nails and magnesium plates made of pure magnesium and magnesium alloy, the titanium nails and the titanium plates have the advantages that the mechanical strength is obviously improved, and the titanium nails and the titanium plates not only can be used for fixing non-load-bearing bones, but also can be used for fixing load-bearing bones.

Description

Technical Field

[0001] The utility model belongs to the field of bone setting medical equipment, and specifically relates to a fracture internal locking and fixing nail plate device. Background Art

[0002] Magnesium implants have the function of stimulating new bone formation and promoting fracture healing. For this reason, people have made them into degradable magnesium nails for use as bone nails for internal locking and fixation of fractures. However, this method has the following problems: 1) The magnesium nail needs to be degraded after implantation to release magnesium and promote fracture healing. However, since the degradation rate of the magnesium nail is determined by the amount of tissue fluid secretion and the contact area between the tissue fluid and the magnesium nail, it is difficult to control it manually. When the magnesium nail degrades too quickly, a large area of ​​degradation occurs before the fracture heals, and the mechanical strength of the magnesium nail decreases rapidly, which is bound to affect the fixation stability of the broken bone and cause the problem of broken bone displacement; 2) In order to ensure the mechanical strength of the magnesium nail in the initial state and the stability of the broken bone during initial fixation, the magnesium nail is usually made into a solid structure. However, even so, it can only be used for locking and fixation of non-weight-bearing bones. For weight-bearing bones, there is still a problem that the mechanical strength of the magnesium nail is low and the stable fixation of the broken bone cannot be ensured. In addition, the degradation rate of the solid magnesium nail is also relatively low, which is not conducive to the release of magnesium. Therefore, it is difficult to ensure both the rapid degradation of magnesium nails and the mechanical strength of magnesium nails; 3) When magnesium nails are used as bone nails, they are usually set at the distal end of the broken bone, which is far away from the fracture area (the area where the broken bone joint is located). After the magnesium element is released, it cannot directly act on the fracture area and needs to flow with the tissue fluid to reach the fracture area, thereby affecting the effect of magnesium in promoting fracture healing. Utility Model Content

[0003] The utility model aims to overcome the defects of slow degradation of magnesium nails and unstable internal fixation when magnesium nails are used as bone nails in an internal locking fixation system in the prior art, and provides a fracture internal locking fixation nail plate device.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A fracture internal locking fixation nail plate device comprises a titanium plate, two groups of titanium nail assemblies respectively arranged at both ends of the titanium plate, the titanium plate is also provided with a plurality of degradable magnesium implants, and the plurality of degradable magnesium implants are all arranged between the titanium nail assemblies.

[0006] As a further technical solution, the degradable magnesium implant is any one of a pure magnesium implant and a magnesium alloy implant.

[0007] As a further technical solution, the degradable magnesium implant adopts a magnesium column, and a plurality of first threaded holes are arranged on the titanium plate, and the magnesium column is arranged in the first threaded holes through threads.

[0008] As a further technical solution, the magnesium column includes a lower cylinder and an upper cylinder that are integrally connected, and a thread is arranged on the outer wall of the upper cylinder.

[0009] As a further technical solution, the outer diameter of the upper cylinder is greater than or equal to the outer diameter of the lower cylinder.

[0010] As a further technical solution, the lower surface of the lower cylinder is flush with or lower than the lower surface of the titanium plate.

[0011] As a further technical solution, the lower cylinder is provided with a plurality of holes.

[0012] As a further technical solution, a wrench groove is provided on the top of the upper cylinder.

[0013] As a further technical solution, the titanium nail assembly includes a plurality of titanium nails arranged in sequence;

[0014] A plurality of second threaded holes are arranged at both ends of the titanium plate, and the titanium nails are arranged in the corresponding second threaded holes through threads.

[0015] As a further technical solution, the first threaded hole and the second threaded hole have the same inner diameter.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model adopts a titanium plate as a bone plate, a titanium nail as a bone nail, and a magnesium implant is arranged in the middle of the titanium plate, so that the magnesium implant can correspond to the position of the fracture area. In this way, after the magnesium element is released, it can directly act on the fracture area, thereby improving the effect of fracture healing; and, compared with magnesium nails and magnesium plates made of pure magnesium and magnesium alloys, the mechanical strength of the titanium nails and titanium plates is significantly improved, and they can be used not only for the fixation of non-load-bearing bones, but also for the fixation of load-bearing bones.

[0018] The utility model adopts a magnesium column as a magnesium implant, and connects the magnesium column to a bone plate by thread. This connection method facilitates adjustment of the installation depth of the magnesium column so that it can abut against the fracture area, thereby improving the healing effect of the fracture.

[0019] The utility model arranges a plurality of holes on the magnesium column, thereby increasing the contact area between the magnesium column and the tissue fluid, thereby increasing the degradation rate of the magnesium column, increasing the release amount of magnesium element per unit time, and improving the effect of fracture healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 2 A three-dimensional diagram of an embodiment of the utility model;

[0022] Figure 3 for Figure 2 A magnified image of

[0023] Figure 4 A three-dimensional diagram of a magnesium column in one embodiment of the utility model;

[0024] Figure 5 A diagram of the use state of the utility model;

[0025] In the figure, 1. titanium plate, 2. titanium nail assembly, 3. titanium nail, 4. magnesium column, 5. first threaded hole, 6. lower cylinder, 7. upper cylinder, 8. thread, 9. hole, 10. wrench slot, 11. second threaded hole, 12. fracture area, 13. broken bone joint. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention will be described in further detail below with reference to the accompanying drawings.

[0030] like Figure 1-4An embodiment of the utility model of a fracture internal locking fixation nail plate device is shown, comprising a titanium plate 1, 2 groups of titanium nail assemblies 2 respectively arranged at both ends of the titanium plate 1, and the titanium plate 1 is also provided with a plurality of degradable magnesium implants, and the plurality of degradable magnesium implants are all arranged between the titanium nail assemblies 2. The utility model adopts the titanium plate 1 as a bone plate, adopts the titanium nail 3 as a bone nail, and arranges the magnesium implant in the middle of the titanium plate 1, so that the magnesium implant can correspond to the position of the fracture area 12 (the area where the fracture joint 13 is located), so that after the magnesium element is released, it can directly act on the fracture area 12, thereby improving the effect of fracture healing; in addition, compared with the magnesium nails and magnesium plates of pure magnesium and magnesium alloy, the mechanical strength of the titanium nail 3 and the titanium plate 1 is significantly improved, and can be used not only for the fixation of non-load-bearing bones, but also for the fixation of load-bearing bones.

[0031] As an embodiment of the internal locking and fixing nail plate device for fractures of the utility model, the degradable magnesium implant is any one of a pure magnesium implant and a magnesium alloy implant, wherein the magnesium alloy can be a magnesium-calcium alloy.

[0032] As an embodiment of the utility model of a fracture internal locking fixation nail plate device, the degradable magnesium implant adopts a magnesium column 4, and a plurality of first threaded holes 5 are arranged on the titanium plate 1. The magnesium column 4 is arranged in the first threaded hole 5 through threads. Since the shapes of bones in different parts of the skeleton are quite different, when the titanium plate 1 is used for fixation, the titanium plate 1 may be in contact with the fracture area 12, or there may be a certain gap. Moreover, the gap sizes of bones in different parts are different. Therefore, the utility model needs to prepare magnesium columns 4 of different lengths, select magnesium columns 4 of appropriate lengths according to needs, and thread the magnesium columns 4 with the titanium plate. This connection method is more convenient for adjusting the installation depth of the magnesium column 4 (that is, the position between the lower surface of the magnesium column 4 and the lower surface of the titanium plate 1). The magnesium column 4 can be screwed into the second threaded hole 11 more or less as needed, so that it can abut against the fracture area 12 to improve the healing effect of the fracture. In addition, when the magnesium column 4 is completely degraded and the fracture has not been completely healed and magnesium is still needed to promote healing, the threaded connection installation method can also perform supplementary installation of the magnesium column 4 without disassembling the titanium plate 1 and the titanium nail 3.

[0033] As an embodiment of the fracture internal locking and fixing nail plate device of the utility model, the magnesium column 4 includes a lower cylinder 6 and an upper cylinder 7 which are integrally connected, and a thread 8 is arranged on the outer wall of the upper cylinder 7 .

[0034] As an embodiment of the fracture internal locking and fixing nail plate device of the utility model, the outer diameter of the upper cylinder 7 is greater than or equal to the outer diameter of the lower cylinder 6 .

[0035] As an embodiment of a fracture internal locking fixation nail plate device of the utility model, the lower surface of the lower cylinder 6 is flush with or lower than the lower surface of the titanium plate 1. The positional relationship between the lower surface of the lower cylinder 6 and the lower surface of the titanium plate 1 is specifically determined by the gap between the titanium plate 1 and the bone after the titanium plate 1 fixes the bone. When in use, it is necessary to ensure that the lower cylinder 6 is in contact with the bone.

[0036] As an embodiment of the utility model of a fracture internal locking and fixing nail plate device, the lower cylinder 6 is provided with a plurality of holes 9. The provision of the holes 9 can increase the contact area between the magnesium column 4 and the tissue fluid, thereby increasing the degradation rate of the magnesium column 4, increasing the release amount of magnesium element per unit time, and improving the effect of fracture healing.

[0037] As an embodiment of the utility model of a fracture internal locking and fixing nail plate device, the top of the upper cylindrical body 7 is provided with a wrench slot 10. When in use, a wrench is inserted into the wrench slot 10, and the wrench is rotated to complete the installation of the magnesium column 4.

[0038] As an embodiment of the fracture internal locking and fixing nail plate device of the utility model, the titanium nail assembly 2 includes a plurality of titanium nails 3 .

[0039] As an embodiment of the utility model of a fracture internal locking fixation nail plate device, a plurality of second threaded holes 11 are provided at both ends of the titanium plate 1, and the titanium nails 3 are threadedly arranged in the corresponding second threaded holes 11.

[0040] As an embodiment of the utility model of a fracture internal locking fixation nail plate device, the first threaded hole 5 and the second threaded hole 11 have the same inner diameter, and the two are the same. The installation position of the titanium nail 3 and the magnesium column 4 can be adjusted according to the needs of different bone fixation, thereby improving the application range of various types of titanium plates 1. However, no matter how the installation hole positions of the titanium nail 3 and the magnesium column 4 are adjusted, it is necessary to ensure that the magnesium column 4 is in the middle and the titanium nail 3 is on both sides.

[0041] The method of using the utility model,

[0042] When the utility model is used, Figure 5 As shown, after the two broken ends of the bone are spliced, the titanium plate 1 is placed on the broken bone, and then the titanium nails 3 at both ends are installed. After the titanium nails 3 are installed, a wrench is used to hang the magnesium column 4 into the second threaded hole 11 so that the magnesium column 4 abuts against the fracture area 12. After the broken bone is healed, the titanium plate 1 and the titanium nail 3 are taken out. When the magnesium column 4 is degraded and the broken bone has not healed yet, the magnesium column 4 can be screwed into the second threaded hole 11 again to supplement the magnesium column 4.

[0043] The above-mentioned embodiments are only preferred embodiments of the present invention, and are not exhaustive of the feasible implementations of the present invention. For those skilled in the art, any obvious changes made to the present invention without departing from the principle and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A fracture internal locking fixation nail plate device, comprising a titanium plate, and two sets of titanium nail assemblies respectively arranged at both ends of the titanium plate, characterized in that: The titanium plate is also provided with a plurality of degradable magnesium implants, and the plurality of degradable magnesium implants are all arranged between the titanium nail components.

2. A fracture internal locking and fixation nail plate device according to claim 1, characterized in that: The degradable magnesium implant is any one of a pure magnesium implant and a magnesium alloy implant.

3. The fracture internal locking and fixation nail plate device according to claim 1, characterized in that: The degradable magnesium implant adopts a magnesium column. The titanium plate is provided with a plurality of first threaded holes, and the magnesium column is arranged in the first threaded holes through threads.

4. The fracture internal locking and fixation nail plate device according to claim 3, characterized in that: The magnesium column comprises a lower cylinder and an upper cylinder which are integrally connected, and a thread is arranged on the outer wall of the upper cylinder.

5. The bone fracture internal locking and fixation nail plate device according to claim 4, characterized in that: The outer diameter of the upper cylinder is greater than or equal to the outer diameter of the lower cylinder.

6. The bone fracture internal locking and fixation nail plate device according to claim 4, characterized in that: The lower surface of the lower cylinder is flush with or lower than the lower surface of the titanium plate.

7. The bone fracture internal locking and fixation nail plate device according to claim 4, characterized in that: The lower cylinder is provided with a plurality of holes.

8. The bone fracture internal locking and fixation nail plate device according to claim 4, characterized in that: A wrench slot is provided on the top of the upper cylinder.

9. The bone fracture internal locking and fixation nail plate device according to claim 4, characterized in that: The titanium nail assembly includes a plurality of titanium nails arranged in sequence; A plurality of second threaded holes are arranged at both ends of the titanium plate, and the titanium nails are arranged in the corresponding second threaded holes through threads.

10. The bone fracture internal locking and fixation nail plate device according to claim 9, characterized in that: The first threaded hole and the second threaded hole have the same inner diameter.

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