A radial bone fixation device

Abstract

The utility model relates to the technical field of medical apparatus and instruments, and specifically relates to a radius bone setting device. The utility model discloses a connecting mechanism and prosthesis, the connecting mechanism is connected with the proximal ulna, the radius prosthesis is connected with the radius, the proximal end of the prosthesis is equipped with a neck part, the connecting mechanism includes two oppositely and interval arranged connecting pieces, each connecting piece includes a mounting seat and a U -shaped groove, the mounting seat is installed on the side of the proximal ulna close to the radius, the U -shaped groove is connected with the mounting seat, the openings of the U -shaped grooves of two connecting pieces are oppositely arranged and form the bayonet of the movable collet neck part. The utility model not only helps to improve the operation efficiency, but also reduces the complexity in the operation process, shortens the operation time and reduces the operation risk. Since the device is easy to install, doctors can more quickly and accurately complete the fixation of the prosthesis, improve the success rate and safety of the operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a radial bone setting device. Background Technology

[0002] In clinical practice, for conditions such as old Monteggia fractures, congenital radioulnar joint fusion, and severe proximal radius fractures or lesions (such as tumors), although various treatment options exist, each option generally has certain shortcomings. This is especially true in joint replacement therapy, where numerous problems arise. First, there is a lack of joint prostheses specifically designed for these conditions. Most existing joint prostheses are designed for common joint lesions and fail to fully consider the biomechanical requirements of special conditions such as Monteggia fractures or radioulnar joint fusion. Therefore, conventional prostheses often cannot fully adapt to the patient's anatomy, leading to unsatisfactory treatment outcomes.

[0003] In addition, postoperative joint function loss is a common problem. Due to the gap between the prosthesis design and the patient's original joint function, the range of motion may be limited or movement may be restricted after surgery. At the same time, the stability of the prosthesis may be insufficient, resulting in less smooth joint movement and affecting postoperative rehabilitation. Especially in the case of complex fractures or lesions, the prosthesis often cannot provide sufficient support, and the joint is prone to loosening or displacement after surgery, leading to further loss of joint function.

[0004] Finally, joint prosthesis loosening and complications are common postoperative issues. Due to factors such as bone resorption and bone weakening, the bond between the prosthesis and the bone may weaken, leading to loosening or displacement, which may require repeat surgery in severe cases. Furthermore, joint replacement surgery itself carries the risk of infection or rejection, which can further impact the patient's recovery process and quality of life. Therefore, there is an urgent need to develop more personalized and precise joint prosthesis designs to improve treatment outcomes, reduce postoperative complications, and enhance patients' quality of life. Utility Model Content

[0005] This invention provides a radial bone setting device to solve existing technical problems.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows: A radial bone grafting device includes a connecting mechanism and a prosthesis. The connecting mechanism is connected to the proximal end of the ulna, and the radial prosthesis is connected to the radius. The proximal end of the prosthesis has a neck. The connecting mechanism includes two opposing and spaced-apart connectors. Each connector includes a mounting base and a U-shaped groove. The mounting base is installed on the side of the proximal end of the ulna near the radius. The U-shaped groove is connected to the mounting base. The openings of the U-shaped grooves of the two connectors are opposite to each other and form a locking opening for a movable retainer neck.

[0007] As a further improvement to the above technical solution: A reinforcing rib is provided between the side of the U-shaped groove away from the bayonet and the mounting base.

[0008] The mounting base is attached to the outer surface of the ulna on its side near the ulna. The mounting base is provided with mounting holes, and each mounting hole is fixedly connected to the ulna by mounting screws.

[0009] The mounting hole is located on the end of the mounting base away from the prosthesis.

[0010] The U-shaped groove is an approximately semi-circular ring.

[0011] The proximal end of the prosthesis has a bulbous portion close to the humerus, which smoothly transitions into the neck.

[0012] The prosthesis is provided with a connecting groove that fits the outer surface of the radius. The connecting groove has multiple through holes, and each through hole is fixedly connected to the radius by a screw.

[0013] Compared with the prior art, the advantages of this utility model are: The innovative design of the connecting mechanism to the radial prosthesis offers several significant advantages, substantially improving treatment outcomes and postoperative recovery quality. Firstly, the use of two opposing, spaced-apart connectors simplifies the device structure. This simplified design not only reduces unnecessary parts and manufacturing costs but also simplifies the installation process. The opposing connectors enhance installation flexibility, adapting to different patients' bone structures, especially in cases of complex fractures or lesions. They allow for precise fitting of prosthesis necks of varying sizes, providing personalized treatment options. Secondly, the U-shaped groove design of the connecting mechanism, in conjunction with the prosthesis neck, ensures the functionality of the movable retainer. This structure provides a stable connection while allowing for some movement, thus avoiding friction and discomfort caused by excessive tightness. By controlling the gap between the retainer and the neck, the connection between the prosthesis and the bone can be smoother, improving postoperative joint mobility and reducing the risk of joint function loss. Through this precise control, patients experience smoother joint movement and a wider range of motion, improving the quality of postoperative rehabilitation. Furthermore, the two opposing and spaced-apart connectors effectively enhance the fixation strength between the prosthesis and the bone. The opposing connectors provide balanced support, effectively distributing the load applied to the prosthesis and reducing the risk of loosening or displacement. This design ensures the long-term stability of the device, especially for patients with complex fractures or fragile bones, and reduces the occurrence of postoperative complications such as prosthesis loosening and displacement. The simplified design not only improves surgical efficiency but also reduces the complexity of the procedure, shortens surgical time, and lowers surgical risks. Because the device is easy to install, surgeons can fix the prosthesis more quickly and accurately, improving the success rate and safety of the surgery. The compactness and stability of the overall structure make the device more durable during use, able to withstand long-term loads, and ensure long-term postoperative recovery for patients. In summary, the radial bone grafting device of this embodiment, through its flexible design and excellent mechanical structure, solves the common problems of prosthesis loosening and functional loss in existing technologies. This device is not only suitable for a variety of orthopedic diseases and has broad clinical application prospects, but also provides patients with a more stable and comfortable treatment experience, significantly improving postoperative functional recovery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembly structure of the radial bone graft device.

[0015] Figure 2 This is a schematic diagram of the device structure connecting the mechanism and the prosthesis.

[0016] Figure 3 This is a schematic diagram of the prosthesis structure.

[0017] Figure 4 Schematic diagram of the connecting mechanism Figure 1 .

[0018] Figure 5 Schematic diagram of the connecting mechanism Figure 2 .

[0019] Legend: 100. Ulna; 200. Radius; 300. Humerus; 1. Connecting mechanism; 11. Connector; 111. Mounting base; 112. U-groove; 113. Reinforcing rib; 114. Mounting hole; 2. Prosthesis; 21. Neck; 22. Ball-shaped crown; 23. Connecting groove; 24. Through hole. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-5As shown, the radial bone grafting device of this embodiment includes a connecting mechanism 1 and a prosthesis 2. The connecting mechanism 1 is connected to the proximal end of the ulna 100, and the radial prosthesis 2 is connected to the radius 200. The proximal end of the prosthesis 2 is provided with a neck 21. The connecting mechanism 1 includes two opposite and spaced-apart connectors 11. Each connector 11 includes a mounting seat 111 and a U-shaped groove 112. The mounting seat 111 is installed on the side of the proximal end of the ulna 100 near the radius 200, and the U-shaped groove 112 is connected to the mounting seat 111. The openings of the U-shaped grooves 112 of the two connectors 11 are opposite to each other and form a locking opening for the movable retainer neck 21. Through the innovative design of the connecting mechanism 1 and the radial prosthesis 2, it has several significant advantages, significantly improving the treatment effect and postoperative recovery quality. First, the use of two opposite and spaced-apart connectors 11 makes the device structure simpler. This simplified design not only reduces unnecessary parts and lowers manufacturing costs, but also makes the installation process more convenient. The opposing connectors 11 enhance installation flexibility, adapting to different patients' bone structures, especially in cases of complex fractures or lesions. They precisely fit different sized prosthesis necks 21, providing personalized treatment options. Secondly, the U-shaped groove 112 of the connecting mechanism 1, in conjunction with the prosthesis neck 21, ensures the function of the movable retainer. This structure provides a stable connection while allowing for some movement, thus avoiding friction and discomfort caused by excessive tightness. By controlling the gap between the retainer and the neck 21, the prosthesis 2 can rotate smoothly, improving postoperative joint mobility and reducing the risk of joint function loss. Through this precise control, the patient's joint movement is smoother, with a wider range of motion, improving the quality of postoperative rehabilitation. Furthermore, the two opposing and spaced connectors 11 effectively enhance the fixation strength between the prosthesis 2 and the bone. The opposing connectors 11 provide balanced support, effectively distributing the load applied to the prosthesis and reducing the risk of loosening or displacement of the prosthesis 2. Especially for patients with complex fractures or fragile bones, this design ensures the long-term stability of the device, reducing the occurrence of postoperative complications such as prosthesis loosening and displacement. The simplified design not only improves surgical efficiency but also reduces the complexity of the procedure, shortens surgical time, and lowers surgical risks. Because the device is easy to install, surgeons can fix the prosthesis more quickly and accurately, improving the success rate and safety of the surgery. The compactness and stability of the overall structure make the device more durable during use, able to withstand long-term loads, and ensure long-term postoperative recovery for patients.

[0022] In summary, the radial bone grafting device of this embodiment, through its flexible design and excellent mechanical structure, solves the common problems of prosthesis loosening and functional loss in existing technologies. This device is not only suitable for a variety of orthopedic diseases and has broad clinical application prospects, but also provides patients with a more stable and comfortable treatment experience, significantly improving postoperative functional recovery.

[0023] In this embodiment, a reinforcing rib 113 is provided between the side of the U-shaped groove 112 away from the bayonet and the mounting base 111. This enhances the structural strength of the connecting mechanism 1 and effectively prevents deformation or breakage caused by excessive load or long-term use during operation.

[0024] In this embodiment, the mounting base 111 is attached to the outer surface of the ulna 100 near its side. The mounting base 111 is provided with mounting holes 114, and each mounting hole 114 is fixedly connected to the ulna 100 by mounting screws. This makes the connection between the mounting base 111 and the ulna 100 more secure, ensuring the stability of the prosthesis 2 and reducing the risk of postoperative prosthesis displacement.

[0025] In this embodiment, the mounting hole 114 is located on the end of the mounting base 111 away from the prosthesis 2. The position of the mounting hole 114 away from the end of the prosthesis 2 provides more space for screw installation, facilitating operation and ensuring the screw is securely fixed.

[0026] In this embodiment, the U-shaped groove 112 is an approximately semi-circular ring. This allows the prosthesis neck 21 to be more smoothly inserted into the U-shaped groove 112, providing better fit, while avoiding friction and discomfort that may occur during the movement of the retainer, ensuring smooth joint movement and reducing the risk of postoperative joint function limitation.

[0027] In this embodiment, the proximal end of the prosthesis 2 is provided with a bulbous crown 22 near the humerus 300, and the bulbous crown 22 smoothly transitions to the neck 21. This improves the coordination between the prosthesis 2 and the humerus 300 and radius 200. The smooth transition of the bulbous crown 22 helps to reduce friction and discomfort during joint movement, thereby providing a more natural range of motion and reducing the possibility of postoperative joint function loss.

[0028] In this embodiment, the prosthesis 2 is provided with a connecting groove 23 that conforms to the outer surface of the radius 200. The connecting groove 23 has multiple through holes 24, and each through hole 24 is secured to the radius 200 by a screw. This provides a more stable prosthesis fixation method, ensuring a firm connection between the prosthesis and the radius 200 and preventing prosthesis loosening or displacement due to long-term use. Furthermore, the design of multiple through holes can distribute the load, reducing single-point pressure concentration and thus lowering the risk of complications such as bone resorption.

[0029] The technical terms involved in this utility model are: proximal end: refers to the end of the instrument that is closer to the operator; distal end: refers to the end of the instrument that is farther from the operator.

[0030] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A radial bone setting device, comprising a connecting mechanism (1) and a prosthesis (2), wherein the connecting mechanism (1) is connected to the proximal end of the ulna (100), the prosthesis (2) is connected to the radius (200), and the proximal end of the prosthesis (2) is provided with a neck (21), characterized in that, The connecting mechanism (1) includes two opposite and spaced-apart connectors (11). Each connector (11) includes a mounting base (111) and a U-shaped groove (112). The mounting base (111) is installed on the side of the proximal end of the ulna (100) near the radius (200). The U-shaped groove (112) is connected to the mounting base (111). The openings of the U-shaped grooves (112) of the two connectors (11) are opposite to each other and form a locking opening for the neck (21) of the movable retainer.

2. The radial bone setting device according to claim 1, characterized in that, A reinforcing rib (113) is provided between the side of the U-shaped groove (112) away from the bayonet and the mounting base (111).

3. The radial bone setting device according to claim 2, characterized in that, The mounting base (111) is close to the side of the ulna (100) and fits against the outer surface of the ulna (100). The mounting base (111) is provided with mounting holes (114), and each mounting hole (114) is fixedly connected to the ulna (100) by mounting screws.

4. The radial bone setting device according to claim 3, characterized in that, The mounting hole (114) is located on the end of the mounting base (111) away from the prosthesis (2).

5. The radial bone setting device according to claim 4, characterized in that, The U-shaped groove (112) is an approximately semi-circular ring.

6. The radial bone setting device according to claim 1, characterized in that, The prosthesis (2) has a bulbous portion (22) near the humerus (300) at its proximal end, and the bulbous portion (22) smoothly transitions to the neck (21).

7. The radial bone setting device according to any one of claims 1-6, characterized in that, The prosthesis (2) is provided with a connecting groove (23) that fits the outer surface of the radius (200). The connecting groove (23) is provided with a plurality of through holes (24). Each of the through holes (24) is fixedly connected to the connecting groove (23) and the radius (200) by installing screws.

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