Artificial thighbone middle section prosthesis implanted from holes in two ends

Abstract

The invention relates to the technical field of implantable medical instruments, and discloses an artificial thighbone middle prosthesis implanted from holes in the two ends, the artificial thighbone middle prosthesis comprises a thighbone near-end broach, the outer wall of the lower side of the thighbone near-end broach is in threaded connection with a thighbone near-end stem column, the outer wall of the thighbone near-end stem column is provided with a thighbone near-end outer side plate, and the thighbone near-end outer side plate is in threaded connection with the thighbone near-end broach. An upper fusion cage hinge structure is arranged on the lower surface of the proximal femur stem column, a lower fusion cage hinge structure is arranged on the lower surface of the upper fusion cage hinge structure, a distal femur outer side plate is in threaded connection with the interior of the distal femur stem column, and a distal femur broach is arranged in the lower side of the distal femur stem column. The thighbone far-end stem column and the thighbone far-end broach are fixed through the thighbone far-end outer side plate and the connecting nail. In an operation, according to the requirement of a patient, the femoral medullary needle is implanted into the medullary needle from the two ends to the middle, the medullary needle is large in diameter and long in length, the contact area of the medullary needle of the prosthesis and a femoral medullary cavity can be increased, and the better medullary needle fixing effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of implantable medical devices, and particularly to a middle segment prosthesis of artificial femur implanted by opening holes at both ends. Background Art

[0002] The femur is one of the most important bones in the human body and plays a key role in maintaining the normal motor function of the human body. Middle segment bone defect diseases of the femur caused by various reasons such as tumors and fractures are relatively common. At present, middle segment replacement surgery of the femur is often used clinically for treatment, and the middle segment prosthesis of artificial femur has become an important medical device to replace the damaged middle segment of the femur.

[0003] The existing technology has obvious limitations. During the operation, osteotomy of the middle segment of the femur needs to be performed according to the lesion site of the patient, and then the intramedullary needle is implanted into the femoral stem from the middle to both ends. However, due to the funnel-shaped structure of the femoral medullary cavity with a thinner middle diameter and thicker diameters at both ends, the intramedullary needle is limited by the smaller diameter in the middle of the femoral medullary cavity, resulting in a thinner diameter. Moreover, the intramedullary needle does not penetrate the cortical bone at both ends of the femur and has a shorter length. In this case, the contact area between the intramedullary needle and the femoral medullary cavity is small, and the fixation effect is not good. Summary of the Invention

[0004] In view of the deficiencies of the existing technology, the present invention provides a middle segment prosthesis of artificial femur implanted by opening holes at both ends, which solves the problems that the intramedullary needle does not penetrate the cortical bone at both ends of the femur, has a shorter length, a small contact area, and a poor fixation effect.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A middle segment prosthesis of artificial femur implanted by opening holes at both ends, including a proximal femoral intramedullary needle. The lower outer wall of the proximal femoral intramedullary needle is threadedly connected with a proximal femoral stem column. An outer plate of the proximal femur is arranged on the outer wall of the proximal femoral stem column. Connecting nails and second steel plate fixing nails are threadedly connected inside the outer plate of the proximal femur. A fusion hinge structure upper is arranged on the lower surface of the proximal femoral stem column. A fusion hinge structure lower is arranged on the lower surface of the fusion hinge structure upper. Mounting nails are threadedly connected inside the fusion hinge structure lower. The inner walls of the fusion hinge structure upper and the fusion hinge structure lower are threadedly connected through the mounting nails. A distal femoral stem column is arranged on the lower surface of the fusion hinge structure lower. A distal outer plate of the femur is threadedly connected inside the distal femoral stem column. A distal femoral intramedullary needle is arranged inside the lower side of the distal femoral stem column. The distal femoral stem column and the distal femoral intramedullary needle are fixed through the distal outer plate of the femur and the connecting nails.

[0006] Preferably, the proximal femoral intramedullary needle includes an M8 thread one. The top end of the M8 thread one is fixedly connected with a conical surface one. A locking nail hole one is arranged inside the conical surface one. A hexagonal hole one is arranged inside the locking nail hole one.

[0007] Preferably, the proximal femoral stem column includes an assembly interface one, and a wrench slot one is fixedly connected to the outer wall on the upper side of the assembly interface one. A steel plate hole one and an M8 threaded hole one are provided inside the wrench slot one.

[0008] Preferably, the proximal femoral lateral plate includes an inner surface of the proximal lateral plate. A locking screw threaded hole one is provided inside the right side of the proximal femoral lateral plate, and a fixing screw hole is provided inside the left side of the proximal femoral lateral plate.

[0009] Preferably, the hinge structure of the fusion device includes a hinge structure slot one. An assembly interface two and a fusion device fixing screw threaded hole one are provided inside the hinge structure slot one. The lower part of the hinge structure of the fusion device includes a hinge structure slot two. A fusion device fixing screw threaded hole two and an assembly interface three are provided inside the hinge structure slot two.

[0010] Preferably, the distal femoral stem column includes an assembly interface four, and a wrench slot two is fixedly connected to the outer wall of the assembly interface four. An M8 threaded hole two and a steel plate hole two are provided inside the wrench slot two.

[0011] Preferably, the distal femoral lateral plate includes an inner surface of the distal lateral plate. A locking screw threaded hole two and a steel plate fixing screw one are provided inside the inner surface of the distal lateral plate. The distal femoral intramedullary pin includes an M8 thread two. A conical surface two is fixedly connected to the bottom end of the M8 thread two. A locking screw hole two and a hexagonal hole two are provided inside the conical surface two.

[0012] Preferably, the connecting screw includes a steel plate thread. A bone thread is fixedly connected to one side of the steel plate thread, and a hexagonal hole three is provided on the other side of the steel plate thread.

[0013] Preferably, the steel plate fixing screw two includes a steel plate fixing thread. A hexagonal hole four is provided inside the right side of the steel plate fixing thread. The installation screw includes a hexagonal hole five, and a fusion device fixing thread is provided inside the right side of the hexagonal hole five.

[0014] Preferably, the proximal femoral intramedullary pin and the proximal femoral stem column are fixed by mutual cooperation of the proximal femoral lateral plate, the connecting screw and the steel plate fixing screw two.

[0015] Working principle: During the operation, first, osteotomy is performed in the middle of the femur, and the middle part of the femur is removed after osteotomy. The medullary cavity of the upper part of the femur is reamed, a hole is drilled at an appropriate position at the top of the upper part of the femur, and then the proximal femoral intramedullary nail is inserted into the medullary cavity of the upper part of the femur from top to bottom until the M8 thread of the proximal femoral intramedullary nail appears on the osteotomy surface of the proximal femur. Place the proximal femoral stem column under the upper part of the femur after osteotomy, and align the M8 threaded hole of the proximal femoral stem column with the M8 thread of the proximal femoral intramedullary nail. Use a hexagon wrench to cooperate with the hexagon hole of the proximal femoral intramedullary nail to keep the proximal femoral intramedullary nail stationary in the upper part of the femur while rotating the proximal femoral stem column. At the same time, use a wrench to cooperate with the wrench slot of the proximal femoral stem column, rotate the wrench to rotate the proximal femoral stem column, and screw the M8 threaded hole onto the M8 thread of the proximal femoral intramedullary nail until it is tightened.

[0016] Prepare the proximal femoral plate, align the plate fixing screw holes of the proximal femoral plate with the plate fixing screw threaded holes of the proximal femoral stem column, prepare 2 plate fixing screws, and use a hexagon wrench to screw the plate fixing screws through the nail holes of the proximal femoral lateral plate into the plate fixing screw threaded holes of the proximal femoral stem column. Prepare 2 locking screws, and use a hexagon wrench to screw the locking screws through the proximal femoral plate and the proximal femoral intramedullary nail into the femur.

[0017] In the same way, install the distal femoral intramedullary nail into the medullary cavity of the lower part of the femur, install the distal femoral stem column, install the distal femoral lateral plate, then use plate fixing screws to fix the distal femoral lateral plate and the distal femoral stem column, and then install locking screws to fix the femoral plate and the lower part of the femur.

[0018] Align the assembly interface of the proximal femoral stem column with the assembly interface on the hinge structure of the fusion device and assemble them together. After pressing, connect the proximal femur and the hinge structure of the fusion device together. Then align the assembly interface of the distal femoral stem column with the assembly interface under the hinge structure of the fusion device and assemble them together to connect the distal femur and the hinge structure under the fusion device together.

[0019] First, align the card slots on the hinge structure of the fusion device and the card slots under the hinge structure of the fusion device, and then move one of the components until the fusion device fixing screw threaded holes on the hinge structure of the fusion device and the fusion device fixing screw threaded holes under the hinge structure of the fusion device are aligned. Finally, use a hexagon wrench to fix the hinge structure of the fusion device and the hinge structure under the fusion device together with the fusion device fixing screws. In this way, the prosthesis installation is completed.

[0020] The present invention provides an artificial middle femoral prosthesis implanted by opening holes at both ends. It has the following beneficial effects: 1. In this invention, during the operation, according to the patient's needs, holes are drilled at both ends of the femur, and the femoral intramedullary nail is implanted from both ends towards the middle. The intramedullary nail has a thicker diameter and a longer length. At the same time, the taper of the intramedullary nail can be customized according to the shape and size of the medullary cavity funnels at the proximal and distal ends of the femur, which can increase the contact area between the intramedullary nail of the prosthesis and the femoral medullary cavity, thereby achieving a better intramedullary nail fixation effect.

[0021] 2. In this invention, the hinge structure slots above and below the fusion device hinge structure are uniquely designed. The parts are in surface contact and can be evenly stressed. After the prosthesis is implanted into the human body, this design can not only better transmit the torque and effectively disperse the pressure generated by limb movement, but also play a certain anti-rotation role, reducing the risk of displacement and loosening of the prosthesis in the body due to torsional force, greatly enhancing the stability of the entire prosthesis structure, and providing a more reliable support for the patient's postoperative rehabilitation and normal activities.

[0022] 3. The design of the steel plate fixing nails and connecting nails in this invention, in cooperation with the corresponding threaded holes and hexagonal holes, facilitates the rapid and accurate fixation of each part of the prosthesis during the operation. At the same time, since the intramedullary nail can be implanted through holes drilled at both ends, the doctor can flexibly adjust the implantation depth, angle, etc. of the intramedullary nail according to the actual situation of the patient's femoral medullary cavity observed during the operation, improving the success rate of the operation and the prosthesis adaptability, and reducing the operation difficulty and time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a partial structural schematic diagram of the proximal femoral intramedullary nail of the present invention; Figure 3 is a partial structural schematic diagram of the proximal femoral stem column of the present invention; Figure 4 is a partial structural schematic diagram of the proximal femoral outer plate of the present invention; Figure 5 is a partial structural schematic diagram of the hinge structure slot one of the present invention; Figure 6 is a partial structural schematic diagram of the hinge structure slot two of the present invention; Figure 7 is a partial structural schematic diagram of the assembly interface four of the present invention; Figure 8 is a partial structural schematic diagram of the locking nail threaded hole two of the present invention; Figure 9 is a partial structural schematic diagram of the hexagonal hole two of the present invention; Figure 10 is a partial structural schematic diagram of the connecting nail of the present invention; Figure 11 is a partial structural schematic diagram of the installation nail of the present invention; Figure 12Schematic diagram of the upper and lower fixed structures of the hinge structure of the fusion device of the present invention.

[0024] Among them, 1. Proximal femoral nail; 101. M8 thread one; 102. First conical surface; 103. First locking nail hole; 104. First hexagonal hole; 2. Proximal femoral stem column; 21. First assembly interface; 22. First steel plate hole; 23. First M8 threaded hole; 24. First wrench slot; 3. Proximal lateral plate of femur; 31. Fixed nail hole; 32. Inner surface of proximal lateral plate; 33. First locking nail threaded hole; 4. Upper hinge structure of fusion device; 41. Second assembly interface; 42. First hinge structure slot; 43. First fusion device fixed nail threaded hole; 5. Lower hinge structure of fusion device; 51. Third assembly interface; 52. Second fusion device fixed nail threaded hole; 53. Second hinge structure slot; 6. Distal femoral stem column; 61. Fourth assembly interface; 62. Second steel plate hole; 63. Second M8 threaded hole; 64. Second wrench slot; 7. Distal lateral plate of femur; 71. First steel plate fixing nail; 72. Inner surface of distal lateral plate; 73. Second locking nail threaded hole; 8. Distal femoral nail; 81. M8 thread two; 82. Second conical surface; 83. Second locking nail hole; 84. Second hexagonal hole; 9. Connecting nail; 91. Third hexagonal hole; 92. Steel plate thread; 93. Bone thread; 10. Second steel plate fixing nail; 1011. Fourth hexagonal hole; 1012. Steel plate fixing thread; 11. Mounting nail; 111. Fifth hexagonal hole; 112. Fusion device fixing thread. Specific embodiments

[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to the appendix Figure 1, an embodiment of the present invention provides a middle segment prosthesis of an artificial femur implanted with openings at both ends, including a proximal femoral intramedullary nail 1. A proximal femoral stem column 2 is threadedly connected to the lower outer wall of the proximal femoral intramedullary nail 1. A proximal femoral lateral plate 3 is provided on the outer wall of the proximal femoral stem column 2. Connecting nails 9 and second plate fixing nails 10 are threadedly connected inside the proximal femoral lateral plate 3. A fusion hinge structure upper part 4 is provided on the lower surface of the proximal femoral stem column 2. A fusion hinge structure lower part 5 is provided on the lower surface of the fusion hinge structure upper part 4. Mounting nails 11 are threadedly connected inside the fusion hinge structure lower part 5. The inner walls of the fusion hinge structure upper part 4 and the fusion hinge structure lower part 5 are threadedly connected through the mounting nails 11. A distal femoral stem column 6 is provided on the lower surface of the fusion hinge structure lower part 5. A distal femoral lateral plate 7 is threadedly connected inside the distal femoral stem column 6. A distal femoral intramedullary nail 8 is provided inside the lower side of the distal femoral stem column 6. The distal femoral stem column 6 and the distal femoral intramedullary nail 8 are fixed by the distal femoral lateral plate 7 and the connecting nail 9. The proximal femoral intramedullary nail 1 and the proximal femoral stem column 2 are fixed to each other through the cooperation of the proximal femoral lateral plate 3, the connecting nail 9 and the second plate fixing nail 10.

[0027] Specifically, during the operation, first, osteotomy is performed on the middle segment of the femur. After osteotomy, the middle segment of the femur is taken out, and the medullary cavity of the upper segment of the femur is reamed. An opening is made at the top position of the upper segment of the femur. Then, the proximal femoral intramedullary nail 1 is inserted into the medullary cavity of the upper segment of the femur from top to bottom from above the upper segment of the femur. Then, the proximal femoral intramedullary nail 1 is fixed in the medullary cavity of the upper segment of the femur through the cooperation of the connecting nail 9 and the proximal femoral lateral plate 3. The proximal femoral stem column 2 is threadedly installed on the lower outer wall of the proximal femoral intramedullary nail 1. At the same time, the fusion hinge structure upper part 4 and the fusion hinge structure lower part 5 are connected. The fusion hinge structure upper part 4 is fixed to the bottom end of the proximal femoral stem column 2. The distal femoral stem column 6 is installed inside the bottom end of the fusion hinge structure lower part 5. Finally, the distal femoral stem column 6 and the distal femoral intramedullary nail 8 are installed, and the distal femoral stem column 6 and the distal femoral intramedullary nail 8 are fixed by the distal femoral lateral plate 7 and the connecting nail 9. During the operation, according to the patient's needs, openings are made at both ends of the femur, and the femoral intramedullary nail is implanted from both ends towards the middle. The diameter of the intramedullary nail is thicker and the length is longer. At the same time, the taper of the intramedullary nail can be customized according to the funnel shape and size of the medullary cavity at the proximal and distal ends of the femur, which can increase the contact area between the intramedullary nail of the prosthesis and the femoral medullary cavity to achieve a better intramedullary nail fixation effect.

[0028] Please refer to the appendix Figure 2 , the proximal femoral intramedullary nail 1 includes an M8 thread one 101. The top end of the M8 thread one 101 is fixedly connected to a taper surface one 102. A locking nail hole one 103 is provided inside the taper surface one 102. A hexagonal hole one 104 is opened inside the locking nail hole one 103.

[0029] Specifically, the M8 thread 101 mates with the M8 threaded hole 23 and is connected to the femoral proximal stem 2. The conical surface 102 matches the shape of the medullary cavity funnel in the upper part of the femur. The locking nail hole 103 passes through the femoral proximal intramedullary pin 1 via the locking nail hole. The hexagonal hole 104 mates with a hexagonal wrench, and the femoral proximal intramedullary pin 1 remains stationary within the upper part of the femur.

[0030] Please refer to the attached Figure 3 , the femoral proximal stem 2 includes an assembly interface 21. On the outer wall of the upper side of the assembly interface 21, a wrench slot 24 is fixedly connected. Inside the wrench slot 24, a steel plate hole 22 and an M8 threaded hole 23 are provided.

[0031] Specifically, the assembly interface 21 mates with the assembly interface on the hinge structure 4 of the fusion device and is connected to the hinge structure 4 of the fusion device. The steel plate hole 22 mates with a wrench, and a steel plate fixing nail can be passed through the nail hole of the femoral proximal outer plate 3 and screwed into the femoral proximal stem 2. The M8 threaded hole 23 mates with the M8 thread 101 and is connected to the femoral proximal intramedullary pin 1. The wrench slot 24 mates with a wrench, and the femoral proximal stem 2 can be rotated to screw the M8 thread 101 into the femoral proximal intramedullary pin 1.

[0032] Please refer to the attached Figure 4 , the femoral proximal outer plate 3 includes an inner surface 32 of the proximal outer plate. Inside the right side of the femoral proximal outer plate 3, a locking nail threaded hole 33 is provided. Inside the left side of the femoral proximal outer plate 3, a fixing nail hole 31 is provided.

[0033] Specifically, the fixing nail hole 31 mates with a hexagonal wrench, and a steel plate fixing nail can be passed through the nail hole of the femoral proximal outer plate 3 and screwed into the femoral proximal stem 2. The inner surface 32 of the proximal outer plate fits against the surface of the femoral proximal part. The locking nail threaded hole 33 uses a hexagonal wrench to connect the femoral proximal outer plate 3 and the femoral proximal intramedullary pin 1 together.

[0034] Please refer to the attached Figure 5 、attached Figure 11 and attached Figure 12 , the hinge structure 4 of the fusion device includes a hinge structure slot 42. Inside the hinge structure slot 42, an assembly interface 41 and a fusion device fixing nail threaded hole 43 are provided. The lower hinge structure 5 of the fusion device includes a hinge structure slot 53. Inside the hinge structure slot 53, a fusion device fixing nail threaded hole 52 and an assembly interface 51 are provided.

[0035] Specifically, the mating interface two 41 mates with the mating interface of the proximal femoral nail 1 and is connected to the nail. The hinge structure slot one 42 and the hinge structure slot two 53 are installed with each other to play a role in preventing detachment. The fusion device fixing screw hole one 43 and the fusion device fixing screw hole two 52 are fitted together. After the upper part 4 of the fusion device hinge structure and the lower part 5 of the fusion device hinge structure are assembled together, they are fixed together by the installation screw 11.

[0036] Please refer to the appendix Figure 6 and Figure 10 , the distal femoral stem column 6 includes a mating interface four 61. The outer wall of the mating interface four 61 is fixedly connected with a wrench slot two 64. The inside of the wrench slot two 64 is provided with an M8 screw hole two 63 and a steel plate hole two 62.

[0037] Specifically, the mating interface four 61 mates with the mating interface three 51 of the lower part 5 of the fusion device hinge structure and is connected to the lower part 5 of the fusion device hinge structure. The steel plate hole two 62 cooperates with a wrench, and the steel plate fixing screw two 10 can be passed through the nail hole of the distal femoral outer plate 7 and screwed into the distal femoral stem 6 column of the distal femoral nail 8. The M8 screw hole two 63 facilitates the installation of the M8 thread two 81, and the steel plate hole two 62 facilitates the fixing of the distal femoral outer plate 7 outside the distal femoral nail 8 with the steel plate fixing screw two 10.

[0038] Please refer to the appendix Figure 8 and appendix Figure 9 , the distal femoral outer plate 7 includes an inner surface 72 of the distal outer plate. The inside of the inner surface 72 of the distal outer plate is provided with a locking screw hole two 73 and a steel plate fixing screw one 71. The distal femoral nail 8 includes an M8 thread two 81. The bottom end of the M8 thread two 81 is fixedly connected with a conical surface two 82. The inside of the conical surface two 82 is provided with a locking screw hole two 83 and a hexagonal hole two 84 Specifically, the inner surface 72 of the distal outer plate fits with the distal femoral surface. The locking screw hole two 73 and the installation screw 11 cooperate with each other. A hexagonal wrench is used to connect the distal femoral outer plate 7 and the distal femoral nail 8 together. The M8 thread two 81 is used to connect the M8 screw hole two 63. The conical surface two 82 matches the funnel shape of the distal femoral medullary cavity. The locking screw hole two 83 is used to fix the distal femoral nail 8. The hexagonal hole two 84 cooperates with a hexagonal wrench to keep the distal femoral nail 8 stationary in the lower part of the femur.

[0039] Please refer to the appendix Figure 10 , the connecting screw 9 includes a steel plate thread 92. One side of the steel plate thread 92 is fixedly connected with a bone thread 93. The other side of the steel plate thread 92 is provided with a hexagonal hole three 91.

[0040] Specifically, the hexagonal hole three 91 cooperates with a hexagonal wrench to pass the connecting pin 9 through the femoral marrow needle and screw it into the femur. The steel plate thread 92 cooperates with the locking pin threaded hole two 73 of the lateral plate 7 of the distal femur. The bone thread 93 facilitates screwing the connecting pin 9 into the cortical bone and cancellous bone of the femur.

[0041] Please refer to the appendix Figure 10 - appendix Figure 12 , the steel plate fixing pin two 10 includes a steel plate fixing thread 1012. A hexagonal hole four 1011 is opened inside the right side of the steel plate fixing thread 1012. The mounting pin 11 includes a hexagonal hole five 111. A fusion device fixing thread 112 is opened inside the right side of the hexagonal hole five 111.

[0042] Specifically, the steel plate fixing pin two 10 cooperates with a hexagonal wrench and can pass the steel plate fixing pin two 10 through the lateral plate 3 of the proximal femur and screw it onto the proximal femur handle column 2. The mounting pin 11 cooperates with a hexagonal wrench and can fix the upper fusion device hinge structure 4 and the lower fusion device hinge structure 5 together.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An artificial femoral midsection prosthesis implanted by opening holes at both ends, comprising a femoral proximal intramedullary pin (1), characterized in that, The lower outer wall of the proximal femoral intramedullary nail (1) is threadedly connected to the proximal femoral stem column (2). The outer wall of the proximal femoral stem column (2) is provided with a proximal femoral lateral plate (3). The inside of the proximal femoral lateral plate (3) is threadedly connected with a connecting nail (9) and a second plate fixing nail (10). The lower surface of the proximal femoral stem column (2) is provided with an upper fusion hinge structure (4). The lower surface of the upper fusion hinge structure (4) is provided with a lower fusion hinge structure (5). The inside of the lower fusion hinge structure (5) is threadedly connected with a mounting nail (11). The inner walls of the upper fusion hinge structure (4) and the lower fusion hinge structure (5) are threadedly connected through the mounting nail (11). The lower surface of the lower fusion hinge structure (5) is provided with a distal femoral stem column (6). The inside of the distal femoral stem column (6) is threadedly connected with a distal femoral lateral plate (7). The lower side inside of the distal femoral stem column (6) is provided with a distal femoral intramedullary nail (8). The distal femoral stem column (6) and the distal femoral intramedullary nail (8) are fixed by the distal femoral lateral plate (7) and the connecting nail (9).

2. The artificial femoral midsection prosthesis implanted by opening holes at both ends according to claim 1, wherein, The proximal femoral intramedullary nail (1) includes an M8 thread one (101). The top of the M8 thread one (101) is fixedly connected with a first conical surface (102). The inside of the first conical surface (102) is provided with a first locking nail hole (103). The inside of the first locking nail hole (103) is provided with a first hexagonal hole (104).

3. The artificial femoral midsection prosthesis implanted by opening holes at both ends according to claim 1, characterized in that, The proximal femoral stem column (2) includes a first assembly interface (21). The upper outer wall of the first assembly interface (21) is fixedly connected with a first wrench slot (24). The inside of the first wrench slot (24) is provided with a first steel plate hole (22) and a first M8 thread hole (23).

4. An artificial femoral midsection prosthesis implanted by opening holes at both ends according to claim 1, characterized in that, The proximal femoral lateral plate (3) includes an inner surface of the proximal lateral plate (32). The right inside of the proximal femoral lateral plate (3) is provided with a first locking nail thread hole (33). The left inside of the proximal femoral lateral plate (3) is provided with a fixing nail hole (31).

5. An artificial femoral mid-section prosthesis implanted with openings at both ends according to claim 1, characterized in that, The upper fusion hinge structure (4) includes a first hinge structure slot (42). The inside of the first hinge structure slot (42) is provided with a second assembly interface (41) and a first fusion device fixing nail thread hole (43). The lower fusion hinge structure (5) includes a second hinge structure slot (53). The inside of the second hinge structure slot (53) is provided with a second fusion device fixing nail thread hole (52) and a third assembly interface (51).

6. An artificial femoral midsection prosthesis implanted with openings at both ends according to claim 1, characterized in that, The distal femoral stem column (6) includes a fourth assembly interface (61). The outer wall of the fourth assembly interface (61) is fixedly connected with a second wrench slot (64). The inside of the second wrench slot (64) is provided with a second M8 thread hole (63) and a second steel plate hole (62).

7. An artificial femoral midsection prosthesis implanted by opening holes at both ends according to claim 1, characterized in that, The distal lateral plate of the femur (7) includes an inner surface of the distal lateral plate (72), and a second locking screw thread hole (73) and a first plate fixing screw (71) are provided inside the inner surface of the distal lateral plate (72). The femoral distal intramedullary nail (8) includes a second M8 thread (81), a second conical surface (82) is fixedly connected to the bottom end of the second M8 thread (81), and a second locking screw hole (83) and a second hexagonal hole (84) are provided inside the second conical surface (82).

8. An artificial femoral midsection prosthesis implanted with openings at both ends according to claim 1, characterized in that, The connecting screw (9) includes a plate thread (92), a bone thread (93) is fixedly connected to one side of the plate thread (92), and a third hexagonal hole (91) is provided on the other side of the plate thread (92).

9. An artificial femoral midsection prosthesis implanted with openings at both ends according to claim 1, characterized in that, The second plate fixing screw (10) includes a plate fixing thread (1012), a fourth hexagonal hole (1011) is provided inside the right side of the plate fixing thread (1012). The mounting screw (11) includes a fifth hexagonal hole (111), and a fusion device fixing thread (112) is provided inside the right side of the fifth hexagonal hole (111).

10. The artificial femoral mid-section prosthesis implanted by perforating from both ends according to claim 1, characterized in that, The femoral proximal intramedullary nail (1) and the femoral proximal stem column (2) are fixed by cooperating with each other through the femoral proximal lateral plate (3), the connecting screw (9) and the second plate fixing screw (10).

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