Magnesium alloy bone nail convenient to install

Abstract

The invention relates to the technical field of magnesium alloy bone nails, and discloses a magnesium alloy bone nail convenient to install, the magnesium alloy bone nail comprises a bone nail and a steel plate, nickel-titanium alloy is arranged on the outer side face of the bone nail, the nickel-titanium alloy has a shape memory effect and superelasticity, and the bone nail comprises a middle section structure, a tail end structure, a front section structure and a tip end; the steel plate comprises a device shell, a connecting hole is formed in the device shell, a spring damper and a spring damping device are fixedly connected to the inner wall of the connecting hole, a rotating shaft is fixedly connected to the side face of the spring damping device, a connecting plate is rotationally connected to the rotating shaft, and a connecting clamping plate is fixedly connected to the side face of the spring damper. The connecting clamping plate is movably connected with the device shell; the device is provided with a connecting plate, a connecting clamping plate, a spring damper, a rotating shaft and a spring damping device, looseness can be avoided during bone nail installation, the accuracy and stability of installation are improved, and the discomfort of a patient and the examination frequency can be reduced by arranging an intelligent monitoring system.

Description

Technical Field

[0001] The invention relates to the technical field of magnesium alloy bone screws, in particular to a magnesium alloy bone screw which is easy to install. Background Art

[0002] At present, bone nails are one of the commonly used medical devices in bone repair surgery. Traditional bone nails are mainly made of titanium alloy and stainless steel. These materials have good mechanical properties and corrosion resistance, but their elastic modulus is high. After implantation, there is an obvious stress shielding effect, and the patient needs a second surgery to remove it after the bone tissue heals. This will not only cause physical burden to the patient, but also easily cause secondary infection. Magnesium alloy materials have good mechanical properties and elastic modulus close to human bones, which can effectively reduce the stress shielding effect and have excellent biocompatibility. They can be gradually degraded in the human environment. The magnesium element produced by degradation is a constant element in the human body and can be absorbed by the human body. It can further participate in human metabolism and promote bone tissue repair. As a medical implant material, it has broad application prospects.

[0003] It is difficult to align the nail holes during installation of current bone screws. The main body is prone to loosening over time, causing harm to the user's body. At the same time, it is very inconvenient to monitor the status of the bone screws after installation, which increases the patient's discomfort and the frequency of examinations. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a magnesium alloy bone screw that is easy to install to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a magnesium alloy bone screw that is easy to install, comprising a bone screw and a steel plate, wherein a nickel-titanium alloy is arranged on the outer surface of the bone screw, and the nickel-titanium alloy has a shape memory effect and superelasticity, and the bone screw comprises a middle section structure, a terminal structure, a front section structure and a tip, and an intelligent monitoring system is arranged inside the bone screw, wherein the intelligent monitoring system comprises a detection sensor, a wireless communication module and a micro battery, and the state of the bone screw is monitored in real time through the detection sensor;

[0006] The steel plate includes a device shell, a connecting hole is opened on the device shell, a spring damper and a spring damping device are fixedly connected to the inner wall of the connecting hole, a rotating shaft is fixedly connected to the side of the spring damping device, a connecting plate is rotatably connected to the rotating shaft, a connecting splint is fixedly connected to the side of the spring damper, and the connecting splint is movably connected to the device shell.

[0007] Furthermore, the terminal structure is designed to be hexagonal or octagonal, the front section structure is the main load-bearing part and is provided with a self-locking thread, and the tip is arranged to be a flat circle or ellipse to prevent the bone screw from loosening during installation and improve the accuracy and stability of installation.

[0008] Furthermore, evenly distributed micropores are opened on the surface of the outer side of the middle section structure, and the pore size is controlled between fifty and two hundred microns. Nanofiber mesh is arranged in the micropores to increase the surface area and bone cell attachment points, promote the attachment and growth of bone cells, and accelerate the bone integration process.

[0009] Furthermore, a number of connecting blocks are fixedly connected to the outer surface of the middle section structure. The connecting blocks are made of degradable materials. The interior of the connecting blocks contains a BMP-2 growth factor coating and an antibiotic coating with antibacterial effects. The growth factor coating and the antibiotic coating can be gradually released through self-degradation, continuously releasing growth factors to promote bone regeneration, while releasing antibiotics to reduce the risk of postoperative infection.

[0010] Furthermore, the detection sensor includes a micro pressure sensor, a temperature sensor and a biomarker sensor. The micro pressure sensor is arranged inside the front structure, the tip and the connecting block, close to the surface in contact with the bone, and it can monitor the pressure changes between the bone screw and the bone in real time. The temperature sensor is arranged at the tip and the terminal structure to monitor the internal temperature of the bone and the temperature of the connection between the outside of the bone and the bone screw. The biomarker sensor is arranged at the connecting block to detect the concentration changes of the biomarker.

[0011] Furthermore, a connecting column is fixedly connected to the top of the connecting plate, and the connecting column is rotatably connected to the device housing at the top. A plurality of connecting clamping blocks are fixedly connected to the inner wall of the connecting plate.

[0012] When in use, the bone screw is inserted into the connecting hole, and the side wall of the bone screw will squeeze the connecting splint toward the direction of the spring damper, thereby driving the connecting splint and the spring damper to move toward the inside of the device shell. When the connecting splint moves, it will push the rotating shaft and the spring damper device arranged on the side to move toward the inside of the device shell and be in a compressed state. When the rotating shaft moves, it will drive the connecting plate rotatably connected thereto to move toward the inside of the device shell, and the end of the connecting plate rotatably connected to the rotating shaft moves inward, while the top of the connecting plate fixes the bone screw through the connecting plate and the connecting splint. The connecting clamping block fixedly connected on the inner side surface of the connecting plate and the connecting block arranged on the bone screw restrict each other during installation, which can avoid loosening when installing the bone screw, thereby improving the accuracy and stability of installation.

[0013] Furthermore, the wireless communication module is implemented through low-power Bluetooth, which can transmit the data collected by the sensor to a smartphone or cloud server in real time to achieve remote monitoring and data analysis. Through real-time monitoring and data analysis, doctors can discover problems and take measures more quickly, thereby improving treatment efficiency. At the same time, compared with traditional postoperative examinations, the intelligent monitoring system can reduce patients' discomfort and examination frequency.

[0014] Furthermore, the outer surfaces of the tip, front section structure and terminal structure are coated with a layer of Dacromet coating, which is an anti-corrosion coating composed of zinc, aluminum, chromate and organic matter, and has excellent corrosion resistance and adhesion.

[0015] Beneficial effects:

[0016] 1. The magnesium alloy bone screw, which is easy to install, is provided with a connecting plate, a connecting splint, a spring damper, a rotating shaft and a spring damping device. When the bone screw is inserted, the connecting splint is squeezed by the bone screw, and the connecting splint pushes the rotating shaft and the spring damping device to move, and the rotating shaft drives the connecting plate to move, so that the connecting plate and the connecting splint fix the bone screw on the steel plate, which can prevent loosening when installing the bone screw, and improve the accuracy and stability of installation.

[0017] 2. This easy-to-install magnesium alloy bone nail is equipped with an intelligent monitoring system. Through real-time monitoring and data analysis, doctors can discover problems and take measures more quickly, thereby improving treatment efficiency. At the same time, compared with traditional postoperative examinations, the intelligent monitoring system can reduce patients' discomfort and examination frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a magnesium alloy bone screw that is easy to install proposed by the present invention;

[0019] Figure 2 A schematic diagram of the internal structure of a steel plate of a magnesium alloy bone nail that is easy to install proposed by the present invention;

[0020] Figure 3 This is a module diagram of an intelligent monitoring system for magnesium alloy bone screws that is easy to install proposed by the present invention.

[0021] In the figure: 1. bone screw; 101. middle section structure; 102. end structure; 103. front section structure; 104. tip; 105. connection block; 2. steel plate; 201. device housing; 202. connection hole; 203. connection plate; 204. connection clamp block; 205. connection clamp plate; 206. spring damper; 207. rotating shaft; 208. spring damper device; 209. connection column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 2 , a magnesium alloy bone screw that is easy to install, comprising a bone screw 1 and a steel plate 2, wherein a nickel-titanium alloy is arranged on the outer surface of the bone screw 1, and the nickel-titanium alloy has a shape memory effect and superelasticity, and the bone screw 1 comprises a middle section structure 101, a terminal structure 102, a front section structure 103 and a tip 104;

[0025] The steel plate 2 includes a device housing 201, which is provided with a connecting hole 202, a spring damper 206 and a spring damping device 208 are fixedly connected to the inner wall of the connecting hole 202, a rotating shaft 207 is fixedly connected to the side of the spring damping device 208, a connecting plate 203 is rotatably connected to the rotating shaft 207, a connecting splint 205 is fixedly connected to the side of the spring damper 206, and the connecting splint 205 and the device housing 201 are movably connected.

[0026] The end structure 102 is designed to be hexagonal or octagonal, the front section structure 103 is the main load-bearing part and is provided with a self-locking thread, and the tip 104 is set to be a flat circle or ellipse to prevent the bone screw from loosening during installation and improve the accuracy and stability of installation.

[0027] The outer side surface of the middle structure 101 is provided with uniformly distributed micropores, the pore size of which is controlled between fifty and two hundred microns. Nanofiber mesh is arranged in the micropores to increase the surface area and bone cell attachment points, promote the attachment and growth of bone cells, and accelerate the bone integration process.

[0028] Several connecting blocks 105 are fixedly connected to the outer surface of the middle section structure 101. The connecting blocks 105 are made of degradable materials. The interior of the connecting blocks 105 contains a BMP-2 growth factor coating and an antibiotic coating with antibacterial effects. The growth factor coating and the antibiotic coating can be gradually released through self-degradation, continuously releasing growth factors to promote bone regeneration, while releasing antibiotics to reduce the risk of postoperative infection.

[0029] A connecting column 209 is fixedly connected to the top of the connecting plate 203 , and the connecting column 209 is rotatably connected to the device housing 201 at the top. A plurality of connecting clamping blocks 204 are fixedly connected to the inner wall of the connecting plate 203 .

[0030] When in use, the bone screw 1 is inserted into the connecting hole 202, and the side wall of the bone screw 1 will squeeze the connecting splint 205 towards the direction of the spring damper 206, thereby driving the connecting splint 205 and the spring damper 206 to move towards the inside of the device housing 201. When the connecting splint 205 moves, it will push the rotating shaft 207 and the spring damper 208 arranged on the side to move towards the inside of the device housing 201. 206 and 208 are in a compressed state. When the rotating shaft 207 moves, it will drive the connecting plate 203 rotatably connected thereto to move towards the inside of the device housing 201. One end of the connecting plate 203 rotatably connected to the rotating shaft 207 moves inward, and the top of the connecting plate 203 fixes the bone screw 1 through the connecting plate 203 and the connecting splint 205. The connecting clamping block 204 fixedly connected on the inner side surface of the connecting plate 203 and the connecting block 105 arranged on the bone screw 1 restrict each other during installation, which can prevent loosening when installing the bone screw, thereby improving the accuracy and stability of installation.

[0031] The outer surfaces of the tip 104, the front section structure 103 and the terminal structure 102 are coated with a layer of Dacromet coating, which is an anti-corrosion coating composed of zinc, aluminum, chromate and organic matter, and has excellent corrosion resistance and adhesion.

[0032] Embodiment 2

[0033] See also Figure 3 An intelligent monitoring system is arranged inside the bone screw 1. The intelligent monitoring system includes a detection sensor, a wireless communication module and a micro battery. The state of the bone screw 1 is monitored in real time through the detection sensor.

[0034] The detection sensors include a micro pressure sensor, a temperature sensor and a biomarker sensor. The micro pressure sensor is arranged inside the front structure 103, the tip 104 and the connecting block 105, close to the surface in contact with the bone, and can monitor the pressure changes between the bone screw 1 and the bone in real time. The temperature sensor is arranged at the tip 104 and the terminal structure 102, and is used to monitor the internal temperature of the bone and the temperature of the connection between the outside of the bone and the bone screw 1. The biomarker sensor is arranged at the connecting block 105, and is used to detect the concentration changes of the biomarkers.

[0035] The wireless communication module is implemented through low-power Bluetooth, which can transmit the data collected by the sensor to a smartphone or cloud server in real time to achieve remote monitoring and data analysis. Through real-time monitoring and data analysis, doctors can discover problems and take measures more quickly, thereby improving treatment efficiency. At the same time, compared with traditional postoperative examinations, the intelligent monitoring system can reduce patient discomfort and examination frequency.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnesium alloy bone screw that is easy to install, comprising a bone screw (1) and a steel plate (2), characterized in that: The outer surface of the bone screw (1) is provided with a nickel-titanium alloy, and the nickel-titanium alloy has a shape memory effect and superelasticity. The bone screw (1) comprises a middle section structure (101), a terminal structure (102), a front section structure (103) and a tip (104). An intelligent monitoring system is arranged inside the bone screw (1), and the intelligent monitoring system comprises a detection sensor, a wireless communication module and a micro battery. The state of the bone screw (1) is monitored in real time through the detection sensor. The steel plate (2) comprises a device housing (201), a connecting hole (202) is provided on the device housing (201), a spring damper (206) and a spring damping device (208) are fixedly connected to the inner wall of the connecting hole (202), a rotating shaft (207) is fixedly connected to the side of the spring damping device (208), a connecting plate (203) is rotatably connected to the rotating shaft (207), a connecting splint (205) is fixedly connected to the side of the spring damper (206), and the connecting splint (205) and the device housing (201) are movably connected, so that when in use, the bone screw (1) is fixedly connected to the device housing (201). When inserted into the connection hole (202), the side wall of the bone screw (1) will press the connection splint (205) toward the spring damper (206), so that the connection splint (205) and the spring damper (206) move toward the inside of the device housing (201). When the connection splint (205) moves, it will drive the rotating shaft (207) and the spring damper (208) arranged on the side to move. When the rotating shaft (207) moves, it will drive the connection plate (203) rotatably connected thereto to move toward the inside of the device housing (201), and the bone screw (1) is fixed by the connection plate (203) and the connection splint (205).

2. The magnesium alloy bone screw that is easy to install according to claim 1, characterized in that: The terminal structure (102) is designed to be hexagonal or octagonal, the front section structure (103) is the main load-bearing part and is provided with a self-locking thread, and the tip (104) is designed to be a flat circle or ellipse.

3. The magnesium alloy bone screw that is easy to install according to claim 1, characterized in that: The surface of the outer side of the middle section structure (101) is provided with uniformly distributed micropores, the pore size of which is controlled between fifty and two hundred micrometers, and a nanofiber mesh is arranged in the micropores.

4. The magnesium alloy bone screw that is easy to install according to claim 1, characterized in that: A plurality of connection blocks (105) are fixedly connected to the outer surface of the middle section structure (101); the connection blocks (105) are made of degradable materials; the interior of the connection blocks (105) contains a BMP-2 growth factor coating and an antibiotic coating with antibacterial effects; the growth factor coating and the antibiotic coating can be gradually released through self-degradation.

5. The magnesium alloy bone screw that is easy to install according to claim 4, characterized in that: The detection sensor comprises a micro pressure sensor, a temperature sensor and a biomarker sensor. The micro pressure sensor is arranged inside the front structure (103), the tip (104) and the connection block (105), close to the surface in contact with the bone, and can monitor the pressure change between the bone screw (1) and the bone in real time. The temperature sensor is arranged at the tip (104) and the terminal structure (102) to monitor the internal temperature of the bone and the temperature of the connection between the outside of the bone and the bone screw (1). The biomarker sensor is arranged at the connection block (105) to detect the concentration change of the biomarker.

6. The magnesium alloy bone screw that is easy to install according to claim 1, characterized in that: A connecting column (209) is fixedly connected to the top of the connecting plate (203), and the connecting column (209) is rotatably connected to the device housing (201) at the top. A plurality of connecting clamping blocks (204) are fixedly connected to the inner wall of the connecting plate (203).

7. The magnesium alloy bone screw that is easy to install according to claim 1, characterized in that: The wireless communication module is implemented through low-power Bluetooth and can transmit the data collected by the sensor to a smartphone or a cloud server in real time.

8. The magnesium alloy bone screw that is easy to install according to claim 1, characterized in that: The outer surfaces of the tip (104), the front section structure (103) and the terminal structure (102) are coated with a layer of Dacromet coating.

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