Fracture fixing device

Abstract

The invention provides a fracture fixing device. The fracture fixing device comprises a fixing support body, the fixing support body comprises a skeleton supporting frame and a plurality of guide cylinders, and the skeleton supporting frame and the guide cylinders are integrated into an integrated structure. A plurality of guide holes are formed in the same face of the skeleton supporting frame in a penetrating mode, the guide holes are arranged in the length direction of the skeleton supporting frame, the guide holes correspond to the guide cylinders one to one and communicate with the guide cylinders, and the guide holes and the guide cylinders jointly form an integrated guide cavity penetrating through the fixing support. The integrated guide cavity is used for a fracture fixing nail to penetrate through. According to the fracture fixing device, the process of a fracture mobile phone can be simplified, and the operation time is shortened.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular, to a fracture fixation device. Background Art

[0002] As one of the most common orthopedic diseases, fractures and their effective treatment have always been one of the hot research technologies. How to take effective treatment measures so that related medical devices can quickly and efficiently complete related operations, reduce patients' pain and promote bone growth, prevent postoperative bone nonunion, bone infection, and fracture site difficulty in healing, etc., is the focus and difficulty of current research.

[0003] At present, surgical treatment is still the main treatment for bone fractures, including internal fixation (closed intramedullary nails, internal fixation plates), external fixation, bone transplantation, and the comprehensive application of various treatment methods, and internal fixation and external fixation techniques are the most commonly used treatment methods. Among them, the most popular external fixation therapy is the Ilizarov external fixator and its improved technology. This technology is an effective method for treating more complex bone nonunions such as severe infections and bone defects in the limbs, and has become an internationally recognized gold standard. Traditional external fixation has the problems of poor anti-rotation and angulation prevention ability, and easy loosening. At the same time, due to the heavy and large size of the external frame, it brings great difficulty in movement and inconvenience in life to patients, and is generally not used as the ultimate treatment.

[0004] Internal fixation is another main method for treating bone fractures. It mainly promotes fracture healing by applying pressure to the fracture ends, eliminating the gap between the fracture ends, increasing static friction and fracture fixation stability. This method requires cutting the patient's skin tissue and adding a fixation device directly to the fracture. There are problems such as large damage, large interference with local soft tissue, large damage to the local blood supply of the fracture, easy to cause bone infection, not conducive to fracture healing, high cost, and multiple surgeries. At the same time, since internal fixation devices cannot be disassembled at will and cannot be adjusted at any time according to needs, the bone healing effect is difficult to control.

[0005] Traditional internal fixation and external fixation treatment methods are not perfect fracture treatment methods. How to design a new bone fixation device that can take advantage of the advantages of both while trying to overcome their shortcomings is one of the important research directions of related medical device research. Summary of the invention

[0006] The present application provides a fracture fixation device, which can simplify the fracture surgery procedure.

[0007] Specifically, the present application is implemented through the following technical solutions:

[0008] One aspect of the present application provides a fracture fixation device, comprising:

[0009] A fixed support body, the fixed support body comprising a skeleton support frame and a plurality of guide cylinders, the skeleton support frame and the plurality of guide cylinders being integrated into an integrated structure;

[0010] A plurality of guide holes are provided on the same surface of the bone support frame, and the plurality of guide holes are arranged along the length direction of the bone support frame. The plurality of guide holes correspond to the plurality of guide cylinders one by one and are interconnected, and the guide holes and the guide cylinders together form an integrated guide cavity that passes through the fixing bracket, and the integrated guide cavity is used for the fracture fixing nail to pass through.

[0011] Optionally, the plurality of guide holes are consistent with the extension direction of the plurality of guide cylinders, wherein the plurality of guide cylinders at least include a first guide cylinder and a second guide cylinder, and along the length direction of the bone support frame, the first guide cylinder is located at the end of the bone support frame, and the second guide protrusion is located inside the bone support frame;

[0012] The second guide cylinder is arranged perpendicular to the bone support frame, and the first guide cylinder is arranged obliquely relative to the second guide cylinder.

[0013] Optionally, the plurality of guide cylinders further include a third guide cylinder, the third guide cylinder and the second guide cylinder are respectively arranged at two ends of the bone support frame, and the third guide cylinder is inclined relative to the second guide cylinder;

[0014] The third guide cylinder and the first guide cylinder are respectively inclined toward the outside of the bone support frame.

[0015] Optionally, the angle between the extension direction of the first guide tube and the extension direction of the second guide tube is 4°-6°; and / or

[0016] The included angle between the extension directions of the third guide tube and the second guide tube is 4°-6°.

[0017] Optionally, a ventilation groove opening outward is provided at the bottom of the guide cylinder.

[0018] Optionally, along the circumference of the guide cylinder, the guide cylinder includes at least four air-permeable grooves distributed in a cross shape.

[0019] Optionally, the fracture fixation device further comprises:

[0020] A fracture fixation nail, the fracture fixation nail is used to pass through the integrated guide cavity formed by the guide hole and the guide cylinder, the fracture fixation nail comprises a nail tail, and the outer wall of the nail tail is provided with a first rectangular thread;

[0021] The inner wall of the guide hole is provided with a second rectangular thread, and the first rectangular thread and the second rectangular thread cooperate with each other to fix the nail tail to the guide hole.

[0022] Optionally, the fracture fixation nail further includes a guide nail rod and a nail tip, the guide nail rod is cylindrical, and the nail tip is triangular pyramidal.

[0023] Optionally, the fracture fixation nail is configured to be inserted into the integrated guide cavity through an auxiliary device, and a spline is provided at the end of the auxiliary device;

[0024] The nail tail is provided with a polygonal inner hole, and the inner hole is used for circumferential fixation in cooperation with a spline.

[0025] The present application provides a fracture fixation device. When performing fracture surgery on a patient, the process of punching holes through a sleeve and a nail, and the process of fixing the bone through a fracture fixation nail can be integrated into one step, that is, the fracture fixation nail is directly passed through the guide hole of the present application and the hollow structure inside the guide cylinder, that is, the integrated guide cavity, and fixed to the bone. The integrated guide cavity in the present application can guide the fracture fixation nail to pass through the skin and bones along a predetermined trajectory, that is, the extension direction of the integrated guide cavity. Further, after the fracture fixation nail is driven into the bone, the fixation of the bones around the broken bone is completed. Moreover, the bottom of the guide cylinder is placed on the skin, and the guide cylinder can also serve as a supporting structure to support the fixing bracket body on the surface of the patient's skin. According to the above analysis, the fracture fixation device of the present application omits the sleeve screwing-in process in traditional surgery, and reduces the operating errors in the sleeve screwing-in process, simplifies the original fracture surgery process, greatly shortens the operation time, reduces the punching process, has less trauma, reduces the risk of infection, and reduces the pain of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram showing an assembly of a fracture fixation device according to an exemplary embodiment of the present application;

[0027] Figure 2 is a schematic diagram of a fixing frame body shown in an exemplary embodiment of the present application;

[0028] Figure 3 is a top view of a fixing frame body shown in an exemplary embodiment of the present application;

[0029] Figure 4 It is a schematic structural diagram of a fracture fixation nail shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0030] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0031] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0032] At present, the commonly used external fixation methods for fractures include: first, through the sleeve and the K-type nail, the K-type nail is guided by the sleeve to punch holes at the positions around the broken bone that need to be fixed. The sleeve is used to ensure that the punching position is the predetermined position to avoid the deviation or error of the K-type nail caused by direct operation. After the K-type nail is removed, the screw used to fix the broken bone is driven into the pre-punched hole to fix the bones around the broken bone and promote the healing of the broken bone.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 The present application provides a fracture fixation device, including a fixing bracket body 100, and the fixing bracket body 100 is used to be placed on the surface of the human skin 1. The fixing bracket body 100 includes a skeleton support frame 110 and a plurality of guide cylinders 120, and the skeleton support frame 110 and the plurality of guide cylinders 120 are integrated into an integrated structure, and the entire fixing bracket body 100 is integrally formed. The guide cylinder 120 is a cylindrical structure with a hollow interior. The outer shape of the guide cylinder 120 is cylindrical. Compared with a structure with a rectangular or square cross-section, the cylindrical guide cylinder 120 does not have edges and corners, and will not cause damage to the skin due to stress concentration at the edges and corners. However, the interior of the guide cylinder 120 is hollow and is a straight tube with a uniform diameter, which is used for the fracture fixation nail to pass through.

[0034] The same surface of the bone support frame 110 is provided with a plurality of guide holes 111, and the plurality of guide holes 111 are arranged along the length direction x of the bone support frame. The plurality of guide holes 111 correspond to the plurality of guide cylinders 120 one by one, that is, the centers of the plurality of guide holes 111 and the plurality of guide cylinders 120 overlap. The guide holes 111 are connected to the guide cylinders 120, and the guide holes 111 and the guide cylinders 120 together form an integrated guide cavity 121 that passes through the fixed support, and the integrated guide cavity 121 is used for the fracture fixation nail to pass through. The number of guide holes 111 and guide cylinders 120 is not limited here, and the spacing between every two adjacent guide holes 111 can be consistent, and the minimum spacing between the guide holes 111 can be set to one finger width, so as to facilitate the dressing treatment of the skin around the guide cylinders 120.

[0035] Combination Figure 1 , using the fracture fixation device provided by the present application to perform fracture surgery on patients, the process of punching holes through the sleeve and the nail, and the process of fixing the bone through the fracture fixation nail can be integrated into one step, that is, the fracture fixation nail is directly passed through the guide hole 111 of the present application and the hollow structure inside the guide cylinder 120, that is, the integrated guide cavity 121, and fixed to the bone 2. The integrated guide cavity 121 in the present application can guide the fracture fixation nail along a predetermined trajectory, that is, the extension direction of the integrated guide cavity 121, through the skin 1 and the bone 2. Further, after the fracture fixation nail is driven into the bone 2, the fixation of the bone 2 around the broken bone 3 is completed. Moreover, the bottom of the guide cylinder 120 is placed on the skin 1, and the guide cylinder 120 can also serve as a supporting structure to support the fixing bracket body 100 on the surface of the patient's skin 1. According to the above analysis, the fracture fixation device of the present application omits the sleeve screwing-in process in traditional surgery, and reduces the operating errors in the sleeve screwing-in process, simplifies the original fracture surgery process, greatly shortens the operation time, reduces the punching process, has less trauma, reduces the risk of infection, and reduces the pain of the patient.

[0036] Furthermore, in the present application, the skeleton support frame 110 and the plurality of guide cylinders 120 are integrated into an integrated structure, eliminating the process of fixing the guide cylinders 120. In addition, the two will not be separated from each other due to external forces. For example, during the rehabilitation process, the patient moves the fractured limb, or the plurality of guide cylinders 120 are subjected to uneven forces due to the uneven surface of the patient's skin, which makes the guide cylinders 120 tend to be misaligned with the skeleton support frame 110 in the height direction. The integrated structure of the present application prevents the two from being misaligned, thereby ensuring the stability of the fixing bracket body 100 fixed to the affected part, and the operation process is convenient.

[0037] In one embodiment, the bone support frame 110 is a strip structure. The strip structure described here means that of the three sides of the bone support frame 110, the long side is much larger than the wide side and the high side, and the size of the wide side and the high side are similar, and the ratio between the two can be between 0.6 and 1.5. Compared with the traditional fracture fixation device, the support structure used is sheet-like, with a small thickness and easy to break. The support structure of the present application is a strip-shaped bone support frame 110, the cross-section of which is close to a square, and it will not be easily broken, and it has stronger stability. It can also ensure the stability of the fracture fixation device under the impact of external force and protect broken bones.

[0038] In one embodiment, the plurality of guide holes 111 are consistent with the extension direction of the plurality of guide cylinders 120. The plurality of guide cylinders 120 include at least a first guide cylinder 120a and a second guide cylinder 120b. Along the length direction x of the bone support frame, the first guide cylinder 120a is located at the end of the bone support frame 110, and the second guide cylinder 120b is located inside the bone support frame. The inside mentioned here refers to a position closer to the center of the bone support frame 110 than the end.

[0039] The second guide cylinder 120b is arranged perpendicular to the skeleton support frame 110, that is, Figure 2 The y direction is consistent. The fracture fixation nail passing through the inside of the second guide cylinder 120b can be vertically driven into the skin 1 of the human body. The first guide cylinder 120a is tilted relative to the second guide cylinder 120b, and the corresponding multiple guide holes 111 are consistent with the extension direction of the multiple guide cylinders 120. That is, the guide hole 111 corresponding to the second guide cylinder 120b is also vertically punched on the bone support frame 110, while the guide hole 111 corresponding to the first guide cylinder 120a is tilted and punched on the bone support frame 110, in order to ensure that the pipeline formed by the integrated guide cavity 121 extends in a straight line, so that the fracture fixation nail can pass smoothly. In this embodiment, since the second guide cylinder 120b is tilted, the integrated guide cavity 121 formed by it is also tilted, and when the fracture fixation nail passes through the tilted integrated guide cavity 121 and is fixed to the bone 2, height positioning can be achieved. Because the fracture fixation nail fixes the fracture fixation device with the human skin 1 and the bone 2 at an angle, the inclined fracture fixation nail can not only provide a part of the vertical support force, but also generate a certain stability in the horizontal direction through its inclination angle, and in the height direction, it is difficult to pull out the fracture fixation nail, thereby improving the stability of the fracture fixation device and the broken bone fixation, and it is not easy to loosen or tilt due to the action of external force.

[0040] In one embodiment, a third guide cylinder 120c is further provided at the other end of the bone support frame 110, and the third guide cylinder 120c is tilted relative to the second guide cylinder 120b;

[0041] The third guide cylinder 120c and the first guide cylinder 120a are respectively inclined toward the outside of the skeleton support frame 110. That is, the third guide cylinder 120c and the first guide cylinder 120a are symmetrically arranged, both facing outward. And the first guide cylinder 120a, the second guide cylinder 120b and the third guide cylinder 120c are all located in the same plane. When the fracture fixation device is fixed to the human body, the center of the skeleton support frame 110 corresponds to the broken bone 3, so the third guide cylinder 120c and the first guide cylinder 120a are symmetrically arranged with the broken bone 3 as the center.

[0042] In the process of fixing the fracture fixation nail to the human body, the fracture fixation nail is first symmetrically fixed to the third guide cylinder 120c and the first guide cylinder 120a, and the height of the fixing bracket body 100 relative to the surface of the fractured bone can be positioned in the height direction, and then the fracture fixation nail is symmetrically nailed into the human body from the outside to the inside. Due to the stress relationship, this method of nailing the fracture fixation nail from the inside to the outside can make the three broken bones have a tendency to move from the outside to the inside, so that the three broken bones can be better combined.

[0043] During the fracture surgery, the position and number of fracture fixation nails can be selected according to the actual situation of the patient, such as the fracture location, fracture degree, patient weight, etc., and only attention needs to be paid to maintaining the symmetry of the fracture fixation nails. Moreover, during the patient's rehabilitation process, the corresponding fracture fixation nails can be removed in real time according to the healing condition of the three broken bones and the doctor's experience, and the stress on each fracture fixation nail can be changed, so that the fracture has a corresponding displacement, thereby realizing the dynamic regulation of the stress state during the fracture healing process, which is conducive to the growth of callus, making the newly grown bones at the three broken bones stronger, and reducing the possibility of secondary fracture of the patient's three broken bones. It conforms to the concept of "combining movement and stillness" in traditional Chinese medicine, and improves the shortcomings of the traditional external fixation and internal fixation devices that generate callus at the fracture, which is low in density and easy to break.

[0044] In one embodiment, the angle between the extension direction of the first guide tube 120a and the extension direction of the second guide tube 120b is 4°-6°. Specifically, it can be 4°, 5°, 6°, etc. And / or, the angle between the extension direction of the third guide tube 120c and the second guide tube 120b is 4°-6°, specifically, it can be 4°, 5°, 6°, etc. Figure 2 As shown in the figure, the angles between the first guide cylinder 120a and the third guide cylinder 120c and the second guide cylinder 120b can all be 5°. The angle can be selected according to the patient's skin thickness, bone thickness, etc.

[0045] In one embodiment, a ventilation groove 122 with an opening facing outward is provided at the bottom of the guide cylinder 120, and the outward opening here means that the fixing bracket body 100 abuts against the surface of the human skin 1, and the guide cylinder 120 faces the direction of the skin 1. The ventilation groove 122 is provided to ventilate the wound caused by the fracture fixation nail passing through the surface of the skin 1, and operations such as dressing change can be performed here, thereby reducing the possibility of postoperative infection. The number and distribution of the ventilation grooves 122 can be two ventilation grooves 122 distributed in a straight line, or three ventilation grooves 122 can be distributed in a central symmetrical manner, etc., and the present application does not limit the number and distribution.

[0046] In another embodiment, along the circumference of the guide tube 120, the guide tube 120 includes at least four ventilation grooves 122 distributed in a cross shape to form a cross ventilation structure. This embodiment can avoid ischemic necrosis caused by the bottom end of the guide tube 120 pressing the skin, and the cross ventilation structure has little damage to the blood supply of the affected area and good ventilation effect, which can further reduce postoperative infection.

[0047] The fracture fixation nails used in conventional fracture fixation devices are threaded nails, the nail rods are provided with threads, and are fixed inside the human body by rotating and screwing.

[0048] In one embodiment, in combination Figure 1 and Figure 4 The fracture fixation device provides a novel fracture fixation nail 200, the fracture fixation nail 200 is used to pass through the integrated guide cavity 121 formed by the guide hole 111 and the guide cylinder 120, the fracture fixation nail 200 includes a nail tail 210, and the outer wall of the nail tail 210 is provided with a first rectangular thread (not shown in the figure);

[0049] The inner wall of the guide hole 111 is provided with a second rectangular thread (not shown in the figure), and the first rectangular thread and the second rectangular thread cooperate with each other to fix the nail tail 210 to the guide hole 111. The guide holes 111 at both ends of the bone support frame 110 are arranged along the inclined direction because the first guide cylinder 120a and the third guide cylinder 120c at both ends are arranged obliquely. Since the rectangular threads have a large mutual contact area, they are helpful to improve the firmness and anti-slip property of the fixed connection, can withstand a large load, and make the fixation of the fracture fixation nail 200 and the bone 2 more stable.

[0050] In one embodiment, the fracture fixation nail 200 also includes a guide nail rod 220 and a nail tip 230, the guide nail rod 220 is cylindrical, and the nail tip 230 is a triangular pyramid. The fracture fixation nail 200 of the present application is also rotated and screwed into the human body during the process of being nailed into the human body. The guide nail rod 220 is cylindrical, and the surface has no thread structure and is flat. The "twisting" phenomenon of the guide nail rod 220 and the skin 1 and the bone 2 during the screwing process can be reduced, and the damage to the skin tissue during the operation and the pain of the patient can be reduced. The nail tip 230 is a triangular pyramid. It can be seen from the A surface of the fracture fixation nail 200 that the triangular pyramid can be evenly distributed at an angle of 120°. The triangular pyramid nail tip 230 can ensure that the fracture fixation nail 200 is evenly stressed during the screwing process, and can also reduce the "twisting" phenomenon of the nail tip 230 on the skin tissue during the screwing process, reducing the damage to the skin tissue. The conical surface and edges of the nail tip 230 can be sharpened to increase the cutting ability of the nail tip 230, making the nail tip 230 more labor-saving during the screwing process and can easily enter the bone, reducing the difficulty of fracture surgery.

[0051] In one embodiment, the fracture fixation nail 200 is configured to be inserted into the integrated guide cavity 121 through an auxiliary device, and a spline is provided at the end of the auxiliary device; the nail tail 210 is provided with a polygonal inner hole 211, and the inner hole 211 is used for circumferential fixation in cooperation with the spline. During the operation, the operator can insert the spline at the end of the auxiliary device into the inner hole 211 of the nail tail 210, so that the end of the auxiliary device and the fracture fixation nail 200 are circumferentially fixed, rotate the end of the auxiliary device, and then screw the fracture fixation nail 200 into the human body. The auxiliary device of this embodiment can be a medical electric drill, that is, the drill bit of the electric drill is equipped with a spline. The use of an electric drill can greatly save the surgical process. The shape of the spline and the inner hole 211 can be a regular hexagon, and the spline is a hexagonal spline. In addition, the auxiliary device can also be a tool such as a screwdriver.

[0052] In one embodiment, the diameter of the guide nail rod 220 is smaller than the inner diameter of the guide cylinder 120, and the size difference is 0.05mm-0.15mm. Specifically, it can be 0.05mm, 0.08mm, 0.1mm, 0.12mm, 0.15mm, etc. By setting the size difference, it can be ensured that the integrated guide cavity 121 has a good guiding function and the guide nail rod 220 can smoothly pass through the integrated guide cavity 121. The inner diameter of the guide hole 111 is larger than the diameter of the nail tail 210, and the inner diameter of the guide hole 111 is larger than the inner diameter of the guide cylinder 120, so as to ensure that the nail tail 210 is placed and fixed in the guide hole 111.

[0053] The bone support frame 110 of the present application is a long strip structure with a rectangular cross-section, which is small in size and slender in structure. When a fracture patient is accompanied by a large area of ​​trauma on the skin 1 surface, it is necessary to cover the large area of ​​trauma with VSD (wound-sealed negative pressure drainage technology). The fracture fixation device of the present application has good compatibility with VSD (wound-sealed negative pressure drainage technology) due to its small size. It is a good treatment for fracture problems with severe wound infection.

[0054] Furthermore, the present application integrates the bone support frame 110 and the guide cylinder 120 together, and compared with the traditional external fixation device mainly based on a rod structure and the internal fixation structure mainly based on a thin plate, the strength and stability of the device are greatly improved.

[0055] The fracture fixation device of the present application is used to achieve the treatment of long bone fractures of the limbs. That is, it can overcome the problems of large size, cumbersomeness and easy loosening of traditional external fixation technology, which causes surgical failure, and improve the problems of low strength, easy loosening, damage caused by secondary surgery and easy infection of the internal fixation system. By integrating the guide structure into the frame for an integrated design, the operation time is greatly shortened. At the same time, because the device can perform real-time dynamic mechanical regulation of the healing of the patient's fracture by disassembling the fracture fixation nails according to the patient's recovery condition, it promotes the growth of bone callus and can be used as the ultimate treatment for fractures.

[0056] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A fracture fixation device, characterized in that: include: A fixed support body, the fixed support body comprising a skeleton support frame and a plurality of guide cylinders, the skeleton support frame and the plurality of guide cylinders being integrated into an integrated structure; A plurality of guide holes are provided on the same surface of the bone support frame, and the plurality of guide holes are arranged along the length direction of the bone support frame. The plurality of guide holes correspond to the plurality of guide cylinders one by one and are interconnected, and the guide holes and the guide cylinders together form an integrated guide cavity that passes through the fixing bracket, and the integrated guide cavity is used for the fracture fixing nail to pass through.

2. The fracture fixation device according to claim 1, characterized in that: The plurality of guide holes are consistent with the extension direction of the plurality of guide cylinders, wherein the plurality of guide cylinders at least include a first guide cylinder and a second guide cylinder, along the length direction of the bone support frame, the first guide cylinder is located at the end of the bone support frame, and the second guide protrusion is located inside the bone support frame; The second guide cylinder is arranged perpendicular to the bone support frame, and the first guide cylinder is arranged obliquely relative to the second guide cylinder.

3. The fracture fixation device according to claim 2, characterized in that: The plurality of guide cylinders further include a third guide cylinder, wherein the third guide cylinder and the second guide cylinder are respectively arranged at two ends of the bone support frame, and the third guide cylinder is arranged obliquely relative to the second guide cylinder; The third guide cylinder and the first guide cylinder are respectively inclined toward the outside of the bone support frame.

4. The fracture fixation device according to claim 3, characterized in that: The included angle between the extending direction of the first guide tube and the extending direction of the second guide tube is 4°-6°; and / or The included angle between the extension directions of the third guide tube and the second guide tube is 4°-6°.

5. The fracture fixation device according to claim 1, characterized in that: The bottom of the guide cylinder is provided with a ventilation groove opening outward.

6. The fracture fixation device according to claim 5, characterized in that: Along the circumference of the guide tube, the guide tube includes at least four air-permeable grooves distributed in a cross shape.

7. The fracture fixation device according to any one of claims 1 to 6, characterized in that: The fracture fixation device further comprises: A fracture fixation nail, the fracture fixation nail is used to pass through the integrated guide cavity formed by the guide hole and the guide cylinder, the fracture fixation nail comprises a nail tail, and the outer wall of the nail tail is provided with a first rectangular thread; The inner wall of the guide hole is provided with a second rectangular thread, and the first rectangular thread and the second rectangular thread cooperate with each other to fix the nail tail to the guide hole.

8. The fracture fixation device according to claim 7, characterized in that: The fracture fixation nail further comprises a guide nail rod and a nail tip, wherein the guide nail rod is cylindrical and the nail tip is triangular pyramidal.

9. The fracture fixation device according to claim 7, characterized in that: The fracture fixation nail is configured to be inserted into the integrated guide cavity through an auxiliary device, and a spline is provided at the end of the auxiliary device; The nail tail is provided with a polygonal inner hole, and the inner hole is used for circumferential fixation in cooperation with a spline.

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