Bone needle fracture passivation device and use method thereof

Abstract

The invention belongs to the technical field of medical apparatus and instruments, particularly relates to a bone needle fracture passivation device and a use method thereof, and aims to solve the problems of low bone needle fracture passivation efficiency, difficulty in angle control, dust pollution and inconvenience in cleaning in a traditional method. According to the technical scheme, a grinding rod is arranged to grind bone needle fractures, and dust is prevented from polluting the operation environment through a dust collecting structure such as cooperation of a cup-shaped shell and a protective cover or cooperation of the cup-shaped shell and a grinding box; the bone needle is stably clamped by the clamping structure; the cleaning structure removes dust on the outer wall when the spicules are taken out; the driving structure synchronously drives grinding and cleaning operation; various structures are matched, the functions of efficient grinding, dust collection and automatic cleaning are achieved, bone needle fractures are passivated, and the operation efficiency and quality are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a bone needle fracture passivation device and its usage method. Background Technology

[0002] In orthopedic surgery, bone pins are commonly used to fix fracture sites or connect implants. The tips of bone pins need to be blunted to avoid puncturing surrounding tissues or blood vessels. Traditional blunting methods include hand filing, sanding, or machine turning, but these still have the following problems: 1. Traditional methods of blunting bone needle fractures often rely on medical staff to hold the bone needle and grinding tools to grind it. This grinding method is inefficient and the grinding angle is difficult to control precisely, resulting in inconsistent blunting quality of bone needles. 2. The polishing process generates a lot of dust, which can easily disperse in the surgical environment, polluting the air in the operating room and potentially harming the health of patients and medical staff. 3. After grinding, the dust adhering to the outer wall of the bone needle is difficult to clean. If it is not cleaned thoroughly, it will affect subsequent surgical procedures.

[0003] Therefore, it is essential to develop a bone needle fracture passivation device that can effectively solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing bone needle fracture passivation devices, such as low efficiency, difficulty in controlling the angle, dust pollution, and inconvenient cleaning, and to propose a bone needle fracture passivation device and its usage method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A bone needle fracture passivation device includes a grinding rod, which is used to passivate and grind one end of the bone needle to be passivated. One end of the grinding rod is provided with an inner spherical surface, and one end of the bone needle extends into the inner spherical surface. It also includes a dust collection structure to collect dust during the grinding of bone needles by a grinding rod, thus preventing dust from contaminating the surgical environment; The grinding rod rotates and grinds the bone needle tip at multiple angles through the inner spherical surface, while the dust collection structure encloses the grinding area to collect the generated dust.

[0006] In one possible design, the dust collection structure includes a cup-shaped shell, a silicone membrane I fixed inside the cup-shaped shell, one end of the bone needle penetrating through the silicone membrane I, an external threaded ring fixed to the outer wall of the cup-shaped shell, a protective cover threaded to the outer wall of the external threaded ring, an end cap slidably provided on the top of the protective cover, the bottom end of the grinding rod penetrating through the end cap and extending into the cup-shaped shell, a conical hole provided inside the protective cover, the end cap capable of closing the conical hole, a rubber ring fixedly penetrating through the end cap, and the grinding rod penetrating through the rubber ring; The bone needle pierces the silicone membrane I and extends into the cup-shaped shell. The protective cover is connected to the external threaded ring to seal the cup-shaped shell. One end of the bone needle extends into the inner spherical surface of the grinding rod. The grinding rod is rotated by the drive device to grind the bone needle. During the grinding process, the grinding rod is manually shaken to adjust the angle. The end cap is always in contact with the top of the protective cover to seal the conical hole and prevent dust leakage. The drive device is an electric bone drill.

[0007] In one possible design, the dust collection structure includes a grinding box, one end of which is fixed with a silicone membrane II, one end of which penetrates the silicone membrane II, a rotating cylinder I is rotatably connected to the inner wall of the grinding box away from the silicone membrane II, a grinding rod extends slidably into the rotating cylinder I, and the grinding rod is coaxial with the silicone membrane II, and a spring I is provided between one end of the grinding rod and one inner wall of the rotating cylinder I. It also includes a clamping structure located on the side of the grinding box away from the rotating cylinder I, for clamping and fixing the bone needle; A cleaning structure is used to remove dust adhering to the outer wall of the bone needle after grinding and removal from the grinding box; A drive structure is used to synchronously drive the cleaning structure when the rotating cylinder I drives the grinding rod to grind; The grinding chamber has a box body fixed to the inner wall of the side near the rotating cylinder I. The grinding chamber is provided with an exhaust hole, and the box body is connected to the exhaust hole. An exhaust fan is installed in the exhaust hole, and a filter screen is fixed in the box body. When the exhaust fan is running, the air in the grinding chamber is discharged, and the dust is filtered by the filter screen to prevent the dust from escaping.

[0008] In one possible design, the clamping structure includes a rotating disk and multiple sliding grooves. The rotating disk has multiple arc-shaped grooves, and multiple pins are slidably disposed in the sliding grooves and slidably engaged with the arc-shaped grooves. A clamping block is fixed to one end of each pin away from the grinding box. A worm wheel is fixedly sleeved on the outer wall of the rotating disk. A worm is rotatably connected to one side of the grinding box via a base plate, and the worm meshes with the worm wheel. The rotating worm drives the rotating disk to rotate, and the clamping block moves towards the center to clamp the bone needle through the cooperation of the arc groove and the sliding groove. The self-locking force between the worm and the worm wheel maintains the clamping state.

[0009] In one possible design, the cleaning structure includes a rotating ring and multiple cleaning cotton layers, multiple sliding rods sliding through the rotating ring, and mounting plates are fixed to the ends of the multiple sliding rods that are close to each other. The cleaning cotton layers are fixed to the mounting plates, and tension springs are sleeved on the outer walls of the multiple sliding rods. One end of the tension spring is fixedly connected to the rotating ring, and the other end is fixedly connected to the sliding rod. The cleaning cotton layer adheres tightly to the outer wall of the bone needle under the tension of the spring, and the rotating ring drives the cleaning cotton layer to remove the dust adhering to the outer wall of the bone needle when it rotates.

[0010] In one possible design, the drive structure includes a drive shaft, gear I, and gear II. Gear I is fixed to the outer wall of the drive shaft, and gear II is fixedly sleeved on the outer wall of the rotating cylinder I and meshes with gear I. One end of the drive shaft rotatably passes through an L-shaped plate. A mounting bracket is fixed to the side of the L-shaped plate near the rotating ring. The rotating cylinder III rotatably passes through the mounting bracket. A rotating wheel is fixed to the end of the rotating cylinder III away from the mounting bracket. Multiple rubber strips are fixed to the outer wall of the rotating wheel. A magnet II is fixed to the inner wall of the rotating cylinder III. The rotating cylinder II is slidably sleeved on the outer wall of the drive shaft, and a magnet I is fixed to the outer wall of the rotating cylinder II. Among them, rotating cylinder I drives the transmission shaft to rotate through the meshing of gear II and gear I. The transmission shaft drives rotating cylinder III and rotating wheel to rotate through the magnetic attraction between magnet I and magnet II. The rotating wheel drives rotating ring to rotate through the friction between rubber strip and rotating ring.

[0011] In one possible design, a control structure is also included for controlling the magnetic transmission between the drive shaft and the rotating cylinder III. The control structure includes a lifting plate and an L-shaped rod. The lifting plate is rotatably sleeved on the outer wall of the rotating cylinder II. The L-shaped rod is slidably disposed in the groove of the grinding box. A spring II is provided between the top end of the L-shaped rod and the inner wall of the top of the groove. The bottom end of the L-shaped rod extends into the adjacent sliding groove and cooperates with a pin. The L-shaped rod is rotatably connected to the lifting plate through a connecting rod. When the pin moves upward, it pushes the L-shaped rod upward, and through the connecting rod, it drives the lifting plate and the rotating cylinder II to move, so that the magnet I extends into the rotating cylinder III to transmit magnetic force.

[0012] In one possible design, multiple fixing plates are fixed to the inner wall of the grinding box near the rotating cylinder I, and limit plates are slidably connected to the sides of the multiple fixing plates that are close to each other. A limit ring is fixedly sleeved on the outer wall of the grinding rod, and the outer diameter of the limit ring is larger than the outer diameter of the rotating cylinder I. The limiting plate and the limiting ring work together to limit the feed of the grinding rod and control the grinding depth.

[0013] In one possible design, a base is fixed to one side of each of the multiple fixed plates that are close to each other, and a lead screw is rotatably passed between two adjacent bases, the lead screw threaded through a limiting plate; The rotating lead screw can adjust the distance between the limiting plate and the rotating cylinder I to precisely control the grinding feed.

[0014] This application discloses a method for using a bone needle fracture passivation device, comprising the following steps: S1. Pierce the silicone membrane I with the bone needle, and extend the end of the bone needle to be polished into the cup-shaped shell; S2. The cup-shaped shell is sealed by the threaded connection between the protective cover and the external threaded ring, and one end of the bone needle extends into the inner spherical surface of the grinding rod. S3. The grinding rod is rotated by the drive device to grind the bone needle; S4. During the grinding process, manually shake the grinding rod to adjust the angle and grind the bone needle from different angles. S5. When the grinding rod is wobbling, the end cap always fits against the top of the protective cover to seal the tapered hole, preventing dust leakage during the grinding process.

[0015] Beneficial effects: In this invention, a silicone membrane I is provided inside the cup-shaped shell, and a protective cover is threaded onto the outer wall of the cup-shaped shell through an external threaded ring. An end cap is slidably fitted onto the top of the protective cover, and a conical hole is provided inside the protective cover. The bone needle pierces the silicone membrane I, and one end of the bone needle extends into the inner spherical surface. An electric bone drill drives a grinding rod to rotate, thereby grinding the bone needle. During the grinding process, the grinding rod and the electric bone drill can be manually shaken to adjust the angle, and the bone needle can be ground from different angles. The cooperation between the protective cover and the cup-shaped shell forms a dust collection device to prevent dust from spilling into the operating room and polluting the surgical environment. In this invention, multiple sliding rods slide through the rotating ring, and mounting plates are fixed to the ends of the multiple sliding rods that are close to each other. Cleaning cotton layers are fixed to the sides of the multiple mounting plates that are close to each other. The cleaning cotton layers adhere tightly to the outer wall of the bone needle under the tension of the tension spring. Therefore, when the rotating ring drives the cleaning cotton layers to rotate, the dust adhering to the outer wall of the bone needle can be thoroughly cleaned. In this invention, the drive structure further includes a gear I fixed to the outer wall of the transmission shaft, a gear II meshing with gear I fixedly sleeved on the outer wall of the rotating cylinder I, a rotating wheel fixed at the end of the rotating cylinder III away from the mounting frame, and multiple magnet blocks II fixed on the inner wall of the rotating cylinder III. The rotating cylinder II is slidably sleeved on the outer wall of the transmission shaft, and multiple magnet blocks I are fixed on the outer wall of the rotating cylinder II. The rotating cylinder I rotates synchronously with the transmission shaft. The transmission shaft drives the rotating cylinder III and the rotating wheel to rotate through the magnetic attraction between the magnet blocks I and the magnet blocks II. The rotating wheel drives the rotating ring to rotate through the friction between the rubber strip and the rotating ring. Therefore, when the bone needle is taken out of the grinding box, the rotating ring drives the cleaning cotton layer to rotate, removing the dust attached to the outer wall of the bone needle and preventing this dust from affecting subsequent surgery. In this invention, the L-shaped rod slides within the sliding groove, and the bottom end of the L-shaped rod extends into an adjacent sliding groove and engages with a corresponding pin. One side of the bottom of the L-shaped rod is rotatably connected to the lifting plate via a connecting rod. The rotating disk rotates in the opposite direction, releasing the clamp block from the bone needle. When one of the pins moves upward to reset, it pushes the L-shaped rod upward synchronously, compressing the spring II. The L-shaped rod, through the connecting rod, drives the lifting plate and the rotating cylinder II to move towards the rubber strip. The rotating cylinder II drives the magnet I to extend into the rotating cylinder III, and a magnetic attraction is generated between the magnet I and the magnet II. Therefore, the rotating wheel can be driven to rotate via the transmission shaft, thereby driving the cleaning structure to clean the outer wall of the bone needle.

[0016] In this invention, during grinding, the angles of the grinding rod and the electric bone drill can be manually adjusted to grind the bone needle from different directions, improving the passivation quality. The dust collection structure effectively prevents dust spillage and avoids contaminating the surgical environment. The cleaning structure uses a tension spring to keep the cleaning cotton layer tightly attached to the bone needle, thoroughly removing dust from the outer wall during rotation. The drive structure utilizes gear meshing and magnetic attraction to achieve synchronous driving of grinding and cleaning, improving operational efficiency. The control structure can automatically start cleaning when the clamp is released, making it convenient to use. The overall device improves the passivation efficiency and quality of the bone needle fracture, ensuring the smooth progress of the surgery. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the cup-shaped housing of a bone needle fracture passivation device provided by the present invention; Figure 2 A three-dimensional cross-sectional view of the cup-shaped housing and protective cover of a bone needle fracture passivation device provided by the present invention; Figure 3 A partial three-dimensional cross-sectional view of the grinding rod of a bone needle fracture passivation device provided by the present invention; Figure 4 A three-dimensional structural schematic diagram of the grinding box of a bone needle fracture passivation device provided by the present invention; Figure 5A three-dimensional cross-sectional view of the grinding box of a bone needle fracture passivation device provided by the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 A three-dimensional exploded view of the rotating disk, grinding box, and fixture block of the bone needle fracture passivation device provided by the present invention; Figure 8 A three-dimensional structural diagram of the L-shaped rod, pin, and lifting plate of the bone needle fracture passivation device provided by the present invention; Figure 9 A three-dimensional exploded view of the rotating wheel, rotating cylinder III, and rotating cylinder II of the bone needle fracture passivation device provided by the present invention; Figure 10 A three-dimensional exploded view of the rotating ring and rotating wheel of a bone needle fracture passivation device provided by the present invention; Figure 11 A three-dimensional structural schematic diagram of gear II and gear I of a bone needle fracture passivation device provided by the present invention; Figure 12 A three-dimensional exploded view of the lead screw and rotating cylinder I of the bone needle fracture passivation device provided by the present invention; Figure 13 This is a three-dimensional exploded structural diagram of the fixing plate and rotating cylinder I of the bone needle fracture passivation device provided by the present invention.

[0018] In the diagram: 1. Cup-shaped shell; 2. Silicone membrane I; 3. Bone needle; 4. Electric bone drill; 5. Grinding rod; 6. Inner spherical surface; 7. External threaded ring; 8. Protective cover; 9. Tapered hole; 10. End cap; 11. Rubber ring; 12. Grinding box; 13. Sliding groove; 14. Rotary disk; 15. Pin; 16. Arc groove; 17. Clamp block; 18. Worm gear; 19. Worm; 20. Rotating cylinder I; 21. Lead screw; 22. Spring I; 23. Limiting ring; 24. Rotating ring; 25. Sliding rod; 26. Mounting plate; 27. Cleaning cotton layer; 28. Tension spring; 29. ​​Drive shaft; 30. Gear I; 31. Gear II; 32. Fixing plate; 33. Limiting plate; 34. L-shaped plate; 35. Slide groove; 36. L-shaped rod; 37. Spring II; 38. Lifting plate; 39. Connecting rod; 40. Mounting bracket; 41. Rotating cylinder II; 42. Magnet I; 43. Rotating cylinder III; 44. Magnet II; 45. Rotating wheel; 46. Rubber strip; 47. Silicone membrane II; 48. Housing; 49. Filter screen; 50. Exhaust fan; 51. Base. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] In one embodiment: Refer to Figure 1 and Figure 3 A bone needle fracture passivation device, relating to the field of medical device technology, mainly includes a bone needle 3 and a grinding rod 5. The grinding rod 5 is used to passivate one end of the bone needle 3. One end of the grinding rod 5 is provided with an inner spherical surface 6, and one end of the bone needle 3 extends into the inner spherical surface 6. The passivation is completed by rotating and moving the grinding rod 5. The device also includes a dust collection structure for collecting dust during the grinding process to avoid contaminating the surgical environment.

[0021] Reference Figures 1-3 The dust collection structure includes a cup-shaped housing 1. A silicone membrane I2 is fixed inside the cup-shaped housing 1. One end of the bone needle 3 penetrates the silicone membrane I2. The silicone membrane I2 is elastic and can tightly wrap the bone needle 3, preventing dust leakage from the gap between the bone needle 3 and the housing. An external threaded ring 7 is fixed to the outer wall of the cup-shaped housing 1, and a protective cover 8 is threaded onto the outer wall of the external threaded ring 7. The protective cover 8 cooperates with the silicone membrane I2 to form a closed space, isolating the grinding area. An end cap 10 is slidably fitted on the top of the protective cover 8. The end cap 10 can move along the top of the protective cover 8 but does not detach from it. The bottom end of the grinding rod 5 penetrates the end cap 10 and extends into the cup-shaped housing 1. A conical hole 9 is provided inside the protective cover 8, providing space for the grinding rod 5 to grind the bone needle 3 from different angles. The end cap 10 can seal the conical hole 9, preventing dust leakage from the conical hole 9. A rubber ring 11 is fixedly inserted inside the end cap 10, and one end of the grinding rod 5 passes through the rubber ring 11. The rubber ring 11 is elastic and has sealing properties, which can increase the sealing between the end cap 10 and the grinding rod 5, and also allow the grinding rod 5 to be angled on the end cap 10 to adapt to different grinding directions. An electric bone drill 4 is provided above the protective cover 8. The output shaft of the electric bone drill 4 is fixedly connected to the grinding rod 5 through a drill bit clamp. The electric bone drill 4 drives the grinding rod 5 to rotate for grinding operations.

[0022] During operation, the bone needle 3 is first pierced through the silicone membrane I2, extending the end of the bone needle 3 to be ground into the cup-shaped housing 1. Then, the protective cover 8 is rotated to connect with the external threaded ring 7, sealing the cup-shaped housing 1. At this point, one end of the bone needle 3 is located within the inner spherical surface 6 of the grinding rod 5. The electric bone drill 4 is activated, driving the grinding rod 5 to rotate and grind the bone needle 3. During grinding, the operator can manually shake the grinding rod 5 and the electric bone drill 4 to adjust the angle and grind the bone needle 3 from different directions. Because the end cap 10 always fits against the top of the protective cover 8, the conical hole 9 is sealed, preventing dust leakage. At the same time, the enclosed space formed by the protective cover 8 and the cup-shaped housing 1 collects dust, preventing dust from spilling into the operating room.

[0023] The elastic parameters of the silicone diaphragm I2 and the rubber ring 11 can be referenced from spring characteristics. The thickness of the silicone diaphragm I2 ranges from 0.5 to 2 mm, and its Shore hardness ranges from 20 to 40 A. The thickness of the rubber ring 11 ranges from 1 to 3 mm, and its Shore hardness ranges from 30 to 50 A. These parameters ensure both sealing and flexibility.

[0024] In another embodiment: Refer to Figures 4-13 The dust collection structure includes a grinding box 12, a silicone membrane II 47, a rotating cylinder I 20, a grinding rod 5, a spring I 22, a clamping structure, a cleaning structure, a driving structure, a control structure, a housing 48, an exhaust fan 50, and a filter screen 49. The grinding box 12 is a closed structure with the silicone membrane II 47 fixed to one end. One end of the bone needle 3 penetrates the silicone membrane II 47. The silicone membrane II 47 is elastic and can seal the gap between the bone needle 3 and the grinding box 12 to prevent dust leakage. The rotating cylinder I 20 is rotatably connected to the inner wall of the grinding box 12 on the side away from the silicone membrane II 47. The grinding rod 5 extends slidably into the rotating cylinder I 20 through a limiting groove and a slider. The grinding rod 5 is coaxial with the silicone membrane II 47 to ensure grinding alignment. One end of the grinding rod 5 is fixed to the inner wall of the rotating cylinder I 20 by a spring seat, which secures the spring I 22. Spring I22 is a compression spring with a stiffness coefficient ranging from 5 to 20 N / mm and a free length ranging from 20 to 50 mm. Spring I22 provides preload force to the grinding rod 5 in the direction of the bone needle 3, ensuring stable grinding contact.

[0025] Reference Figure 4 , Figure 5 and Figure 7The clamping structure is used to stably fix the bone needle 3 during grinding. The clamping structure includes a rotating disk 14 that rotates on one side of the grinding chamber 12 and multiple sliding grooves 13 disposed on one side of the grinding chamber 12. The rotating disk 14 has multiple arc-shaped grooves 16. Multiple pins 15 slide within the sliding grooves 13, with the pins 15 slidingly engaging with the arc-shaped grooves 16. A clamping block 17 is fixed to the end of each pin 15 away from the grinding chamber 12. A worm gear 18 is fixedly sleeved on the outer wall of the rotating disk 14. A worm 19 is rotatably connected to one side of the grinding chamber 12 via a base plate, and the worm 19 meshes with the worm gear 18. By rotating the worm 19, the worm gear 18 and the rotating disk 14 are driven to rotate. The rotating disk 14 drives the pins 15 to move through the arc-shaped grooves 16 and sliding grooves 13, causing the clamping block 17 to move towards the center and clamp the bone needle 3. The self-locking characteristic of the worm 19 and the worm gear 18 ensures a durable clamping force.

[0026] Reference Figure 5 and Figure 10 The cleaning structure is used to remove dust adhering to the outer wall of the bone needle 3 after grinding. The cleaning structure includes a rotating ring 24 that rotates on the inner wall of the grinding chamber 12 away from the rotating cylinder I 20, and multiple cleaning cotton layers 27 disposed within the rotating ring 24. Multiple sliding rods 25 slide through the rotating ring 24, and mounting plates 26 are fixed to the ends of the sliding rods 25 that are close to each other. The mounting plates 26 are fixedly connected to the cleaning cotton layers 27. A tension spring 28 is sleeved on the outer wall of the sliding rod 25. One end of the tension spring 28 is fixedly connected to the outer wall of the rotating ring 24 via a spring seat, and the other end is fixedly connected to the outer wall of the sliding rod 25 via a spring seat. The tension spring 28 is a tension spring with a stiffness coefficient ranging from 2-10 N / mm and a free length ranging from 10-30 mm. The tension spring 28 provides tension to the cleaning cotton layers 27 towards the bone needle 3, ensuring that the cleaning cotton layers 27 adhere tightly to the surface of the bone needle 3 for thorough cleaning.

[0027] Reference Figure 5 , Figures 8-11The drive structure is used to synchronously drive the rotating ring 24 to rotate during the grinding process. The drive structure includes a transmission shaft 29 that rotates on the inner wall of the grinding box 12 near the rotating cylinder I 20. A gear I 30 is fixed to the outer wall of the transmission shaft 29. A gear II 31 is fixedly sleeved on the outer wall of the rotating cylinder I 20, and gear II 31 meshes with gear I 30. An L-shaped plate 34 is welded to one inner wall of the grinding box 12, and one end of the transmission shaft 29 rotatably passes through the L-shaped plate 34. A mounting bracket 40 is fixed to the side of the L-shaped plate 34 near the rotating ring 24, and a rotating cylinder III 43 rotatably passes through the mounting bracket 40. A rotating wheel 45 is fixed to the end of the rotating cylinder III 43 away from the mounting bracket 40, and multiple rubber strips 46 are fixed to the outer wall of the rotating wheel 45. Friction is generated between the rubber strips 46 and the rotating ring 24, driving the rotating ring 24 to rotate. Multiple magnet blocks II 44 are fixed to the inner wall of the rotating cylinder III 43. A rotating cylinder II 41 is slidably mounted on the outer wall of the drive shaft 29 via a limiting groove and a slider. The outer diameter of the rotating cylinder II 41 is smaller than the inner diameter of the rotating cylinder III 43. Multiple magnet blocks I 42 are fixed on the outer wall of the rotating cylinder II 41. Magnetic attraction is generated between the magnet blocks I 42 and the magnet blocks II 44, enabling the rotating cylinder II 41 to drive the rotating cylinder III 43 to rotate.

[0028] Reference Figures 5-9 The control structure controls the magnetic transmission between the drive shaft 29 and the rotating cylinder Ⅲ 43. The control structure includes a lifting plate 38 rotatably mounted on the outer wall of the rotating cylinder Ⅲ 41 and an L-shaped rod 36 sliding within the grinding chamber 12. The L-shaped rod 36 engages with a corresponding pin 15. The lifting plate 38 is slidably connected to the L-shaped plate 34 via a round rod. A groove 35 is provided on the inner wall of the grinding chamber 12 away from the rotating cylinder Ⅰ 20, and the L-shaped rod 36 slides within the groove 35. Multiple springs Ⅱ 37 are fixed between the top of the L-shaped rod 36 and the top inner wall of the groove 35 via spring seats. The springs Ⅱ 37 are compression springs with a stiffness coefficient ranging from 1-5 N / mm and a free length ranging from 15-25 mm. The bottom end of the L-shaped rod 36 extends slidably into an adjacent sliding groove 13 and engages with a corresponding pin 15. A connecting rod 39 is rotatably connected to one side of the bottom of the L-shaped rod 36, and the bottom end of the connecting rod 39 is rotatably connected to one side of the lifting plate 38.

[0029] Reference Figure 5 Figure 11 and Figure 13Multiple fixing plates 32 are fixed to the inner wall of the grinding box 12 near the rotating cylinder I 20. Limiting plates 33 are slidably connected to the sides of the fixing plates 32 that are close to each other. A limiting ring 23 is fixedly sleeved on the outer wall of the grinding rod 5. The outer diameter of the limiting ring 23 is larger than the outer diameter of the rotating cylinder I 20. The cooperation between the limiting ring 23, the rotating cylinder I 20, and the limiting plate 33 controls the feed rate of the grinding rod 5, preventing over-grinding. Two bases 51 are fixed to the sides of the multiple fixing plates 32 that are close to each other. A common lead screw 21 rotatably passes between two adjacent bases 51. The lead screw 21 is threaded through the corresponding limiting plate 33. By rotating the lead screw 21, the position of the limiting plate 33 can be adjusted, thereby controlling the grinding depth.

[0030] Reference Figure 5 A housing 48 is fixed to the inner wall of the grinding chamber 12 near the rotating cylinder I 20. The grinding chamber 12 has an exhaust port, which is connected to the housing 48. An exhaust fan 50 (with its own motor) is installed inside the exhaust port, and a filter screen 49 is fixed inside the housing 48. When the exhaust fan 50 is running, it draws air out of the grinding chamber 12, and dust flows with the air to the housing 48. The filter screen 49 filters the dust, purifying the air.

[0031] Specifically, the bone needle 3 is inserted through the silicone membrane II 47, so that the end of the bone needle 3 to be ground is located inside the grinding box 12. The worm gear 19 is rotated, driving the rotating disk 14 to rotate, clamping the bone needle 3 via the pin 15 and the clamping block 17. The rotating cylinder I 20 and the grinding rod 5 are driven to rotate by a motor. The grinding rod 5 contacts the fracture surface of the bone needle 3 under the action of the spring I 22, performing grinding. The rotating cylinder I 20 drives the transmission shaft 29 to rotate via gears II 31 and I 30. In the clamped state, the pin 15 is in a low position, the L-shaped rod 36 is not pushed, the rotating cylinder II 41 is not engaged with the rotating cylinder III 43, and the cleaning structure is not working.

[0032] After grinding, the worm gear 19 is rotated in the reverse direction to release the clamp. One of the pins 15 moves upward, pushing the L-shaped rod 36 upward and compressing the spring II 37. The L-shaped rod 36 drives the lifting plate 38 and the rotating cylinder II 41 to move towards the rotating cylinder III 43 via the connecting rod 39. The magnet I 42 of the rotating cylinder II 41 and the magnet II 44 of the rotating cylinder III 43 are magnetically attracted to each other, and the transmission shaft 29 drives the rotating cylinder III 43 and the rotating wheel 45 to rotate. The rotating wheel 45 drives the rotating ring 24 to rotate via the rubber strip 46, and the cleaning cotton layer 27 cleans the surface of the bone needle 3 under the action of the tension spring 28. At the same time, the exhaust fan 50 runs to filter dust. Finally, the bone needle 3 is removed and the device is reset.

[0033] This invention, through the aforementioned structure, achieves efficient passivation and dust control at the fracture site of the bone needle 3, making it suitable for various orthopedic surgical environments. Details in the specific implementation can be adjusted according to actual production needs, but will not depart from the core concept of this invention.

[0034] Method of using a bone needle fracture passivation device: The first method involves piercing the silicone membrane I2 with the bone needle 3, and extending the end of the bone needle 3 to be ground into the cup-shaped housing 1. The cup-shaped housing 1 is then sealed by the threaded connection between the protective cover 8 and the external threaded ring 7. One end of the bone needle 3 extends into the inner spherical surface 6 of the grinding rod 5. The grinding rod 5 is rotated by the electric bone drill 4 to grind the bone needle 3. During the grinding process, the grinding rod 5 and the electric bone drill 4 can be manually shaken to adjust the angle and grind the bone needle 3 from different angles. When the grinding rod 5 is shaken, the end cap 10 always fits against the top of the protective cover 8 to seal the conical hole 9, preventing dust leakage during the grinding process. The cooperation between the protective cover 8 and the cup-shaped housing 1 forms a dust collection device to prevent dust from spilling into the operating room and contaminating the surgical environment. The second method: The end of the bone needle 3 to be ground pierces the silicone membrane II 47 and extends into the grinding box 12. When the bone needle 3 extends into the grinding box 12, it is inserted into the inner spherical surface 6 of the corresponding grinding rod 5 and pushed to extend into the rotating cylinder I 20. The limiting ring 23 abuts against the rotating cylinder I 20 to limit the grinding rod 5 and the bone needle 3. The worm gear 19 is rotated, and the meshing of the worm gear 19 and the worm wheel 18 drives the rotating disk 14 to rotate. The rotating disk 14 drives the pin shaft 15 to run, and the pin shaft 15 drives the clamping block 17 to move towards the center through the double sliding cooperation of the sliding groove 13 and the arc groove 16, thereby clamping the bone needle 3. The worm gear 19 and the worm wheel 18... A self-locking force is generated, thus enabling continuous clamping of the bone needle 3. The rotating cylinder I20 and grinding rod 5 are driven by a motor to rotate, performing grinding operations on the bone needle 3. During grinding, the grinding rod 5 continuously moves towards the bone needle 3 under the elastic force of spring I22, ensuring continuous grinding. Additionally, the limiting plate 33 limits the limiting ring 23, controlling the grinding feed of the grinding rod 5 to prevent over-grinding or under-grinding. During grinding, the exhaust fan 50 operates, expelling air from the grinding chamber 12 to the outside. Dust flows with the air towards the chamber 48, while the filter 49 filters the dust in the air. The filter prevents dust from spilling out and contaminating the surgical environment, and also prevents dust from floating inside the grinding chamber 12 and causing excessive dust to adhere to the bone needle 3. After grinding, the worm gear 19 drives the rotating disk 14 to rotate in the opposite direction, releasing the clamp block 17 from the bone needle 3. When one of the pins 15 moves upward and resets, it pushes the L-shaped rod 36 to move upward simultaneously. The spring II 37 is compressed, and the L-shaped rod 36 drives the lifting plate 38 and the rotating cylinder II 41 to move towards the rubber strip 46 through the connecting rod 39. The rotating cylinder II 41 drives the magnet I 42 to extend into the rotating cylinder III 43, and a magnetic attraction is generated between the magnet I 42 and the magnet II 44. The rotating cylinder I 20 moves through the gear II 31 and the gear... The meshing of wheel I 30 drives the transmission shaft 29 to rotate. The transmission shaft 29 drives the rotating cylinder III 43 and the rotating wheel 45 to rotate through the magnetic attraction between magnet I 42 and magnet II 44. The rotating wheel 45 drives the rotating ring 24 to rotate through the friction between the rubber strip 46 and the rotating ring 24. Therefore, when the bone needle 3 is taken out of the grinding box 12, the rotating ring 24 drives the cleaning cotton layer 27 to rotate, removing the dust attached to the outer wall of the bone needle 3 and preventing the dust from affecting subsequent surgery. The rotation of the lead screw 21 can control one end of the limiting plate 33, and then the feed amount of the grinding rod 5 during the grinding process can be controlled by the cooperation of the limiting plate 33, the limiting ring 23, and the spring I 22.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for blunting bone needle fracture surfaces, characterized in that, The application relates to a dust collecting structure for a grinding rod (5) used for dull polishing of one end of a bone needle (3) to be polished, wherein one end of the grinding rod (5) is provided with an inner spherical surface (6), and one end of the bone needle (3) extends into the inner spherical surface (6). The dust collecting structure is used for collecting dust during polishing of the bone needle (3) by the grinding rod (5). The grinding rod (5) rotates and polishes the end of the bone needle (3) at multiple angles through the inner spherical surface (6), and the dust collecting structure seals the polishing area to collect the generated dust.

2. A device for blunting the fracture of a bone pin according to claim 1, characterized in that The dust collecting structure comprises a cup-shaped shell (1), a silica gel membrane I (2) is fixed in the cup-shaped shell (1), one end of the bone needle (3) penetrates through the silica gel membrane I (2), an outer threaded ring (7) is fixed to the outer wall of the cup-shaped shell (1), a protective cover (8) is threadedly connected to the outer wall of the outer threaded ring (7), an end cover (10) is slidably arranged at the top of the protective cover (8), the bottom end of the grinding rod (5) penetrates through the end cover (10) and extends into the cup-shaped shell (1), a conical hole (9) is arranged in the protective cover (8), the end cover (10) seals the conical hole (9), a rubber ring (11) is fixedly arranged in the end cover (10) and penetrates through the end cover (10), and the grinding rod (5) penetrates through the rubber ring (11). The bone needle (3) penetrates through the silica gel membrane I (2) and extends into the cup-shaped shell (1), the protective cover (8) is threadedly connected with the outer threaded ring (7) to seal the cup-shaped shell (1), one end of the bone needle (3) extends into the inner spherical surface (6) of the grinding rod (5), the grinding rod (5) is driven to rotate by a driving device to polish the bone needle (3), the angle of the grinding rod (5) is manually adjusted during polishing, and the end cover (10) is always attached to the top of the protective cover (8) to seal the conical hole (9).

3. A device for blunting the fracture of a bone pin according to claim 1, characterized in that The dust collecting structure comprises a grinding box (12), one end of the grinding box (12) is fixed with a silica gel membrane II (47), one end of the bone needle (3) penetrates through the silica gel membrane II (47), a rotating cylinder I (20) is rotatably connected to the inner wall of one side of the grinding box (12) away from the silica gel membrane II (47), the grinding rod (5) slidably extends into the rotating cylinder I (20), and the grinding rod (5) is coaxial with the silica gel membrane II (47), and a spring I (22) is arranged between one end of the grinding rod (5) and the inner wall of one side of the rotating cylinder I (20). The dust collecting structure further comprises a clamping structure arranged on the side of the grinding box (12) away from the rotating cylinder I (20) and used for clamping and fixing the bone needle (3). A cleaning structure is arranged on the side of the grinding box (12) away from the rotating cylinder I (20) and used for cleaning dust adhered to the outer wall of the bone needle (3) when the bone needle (3) is taken out after polishing. A driving structure is arranged on the side of the grinding box (12) away from the rotating cylinder I (20) and used for driving the cleaning structure synchronously when the rotating cylinder I (20) drives the grinding rod (5) to polish. The grinding box (12) is fixed with a box body (48) on the inner wall of the side of the rotating cylinder I (20), the grinding box (12) is provided with an exhaust hole, the box body (48) is communicated with the exhaust hole, the exhaust fan (50) is installed in the exhaust hole, and the filter screen (49) is fixed in the box body (48); when the exhaust fan (50) operates, the air in the grinding box (12) is exhausted, and the dust is filtered by the filter screen (49).

4. A device for blunting the fracture of a bone pin according to claim 3, characterized in that The clamping structure comprises a rotating disc (14) and a plurality of sliding grooves (13), the rotating disc (14) is provided with a plurality of arc-shaped grooves (16), a plurality of pin shafts (15) are slidingly arranged in the sliding grooves (13) and are in sliding cooperation with the arc-shaped grooves (16), one end of each of the plurality of pin shafts (15) away from the grinding box (12) is fixed with a clamp block (17), the outer wall of the rotating disc (14) is fixedly sleeved with a worm wheel (18), one side of the grinding box (12) is rotatably connected with a worm (19) through a base plate, and the worm (19) is engaged with the worm wheel (18); The rotating worm (19) drives the rotating disc (14) to rotate, the clamp block (17) moves to the middle to clamp the bone needle (3) through the cooperation of the arc-shaped groove (16) and the sliding groove (13), and the self-locking force between the worm (19) and the worm wheel (18) maintains the clamping state.

5. A device for blunting the fracture of a bone pin according to claim 4, characterized in that The cleaning structure comprises a rotating ring (24) and a plurality of cleaning cotton layers (27), a plurality of sliding rods (25) slidingly penetrate the rotating ring (24), one end of each of the plurality of sliding rods (25) is fixed with a mounting plate (26), the cleaning cotton layer (27) is fixed on the mounting plate (26), and the outer wall of each of the plurality of sliding rods (25) is sleeved with a tension spring (28), one end of the tension spring (28) is fixedly connected with the rotating ring (24), and the other end is fixedly connected with the sliding rod (25). The cleaning cotton layer (27) is tightly attached to the outer wall of the bone needle (3) under the action of the tension of the tension spring (28), and the rotating ring (24) drives the cleaning cotton layer (27) to remove the dust attached to the outer wall of the bone needle (3) when rotating.

6. A device for blunting the fracture of a bone pin according to claim 5, characterized in that The driving structure comprises a transmission shaft (29), a gear I (30) and a gear II (31), the gear I (30) is fixed to the outer wall of the transmission shaft (29), the gear II (31) is fixedly sleeved to the outer wall of the rotating cylinder I (20) and is engaged with the gear I (30), one end of the transmission shaft (29) rotatably penetrates an L-shaped plate (34), the L-shaped plate (34) is fixed with a mounting bracket (40) on the side close to the rotating ring (24), a rotating cylinder III (43) rotatably penetrates the mounting bracket (40), one end of the rotating cylinder III (43) away from the mounting bracket (40) is fixed with a rotating wheel (45), the outer wall of the rotating wheel (45) is fixed with a plurality of rubber strips (46), the inner wall of the rotating cylinder III (43) is fixed with a magnet block II (44), and the outer wall of the transmission shaft (29) is slidingly sleeved with a rotating cylinder II (41), the outer wall of the rotating cylinder II (41) is fixed with a magnet block I (42).

7. A device for blunting the fracture of a bone pin according to claim 6, characterized in that Also include control structure for controlling the magnetic transmission between the transmission shaft (29) and the rotating cylinder III (43), the control structure includes the lifting plate (38) and the L-shaped rod (36), the lifting plate (38) is rotatably sleeved on the outer wall of the rotating cylinder II (41), the L-shaped rod (36) is slidably arranged in the sliding groove (35) of the grinding box (12), the spring II (37) is arranged between the top end of the L-shaped rod (36) and the inner wall of the top of the sliding groove (35), the bottom end of the L-shaped rod (36) extends into the adjacent sliding groove (13) and cooperates with the pin shaft (15), the L-shaped rod (36) is rotatably connected with the lifting plate (38) through the connecting rod (39); Wherein, when the pin shaft (15) moves up, the L-shaped rod (36) is pushed up, and the lifting plate (38) and the rotating cylinder II (41) are driven to move through the connecting rod (39), so that the magnet block I (42) extends into the rotating cylinder III (43) to transmit magnetic force.

8. A device for blunting the fracture of a bone pin according to claim 7, characterized in that The grinding box (12) is fixed with a plurality of fixed plates (32) on the inner wall of one side close to the rotating cylinder I (20), the fixed plates (32) are slidably connected with the limiting plates (33) on the side close to each other, the outer wall of the grinding rod (5) is fixedly sleeved with the limiting ring (23), and the outer diameter of the limiting ring (23) is greater than the outer diameter of the rotating cylinder I (20); Wherein, the limiting plate (33) cooperates with the limiting ring (23) to limit the feed amount of the grinding rod (5) and control the polishing depth.

9. A device for blunting the fracture of a bone pin according to claim 8, characterized in that The fixed plates (32) are fixed with bases (51) on the side close to each other, and the screw rods (21) are rotatably penetrated between the adjacent two bases (51), and the screw rods (21) are threadedly penetrated through the limiting plates (33); Wherein, the rotating screw rod (21) adjusts the distance between the limiting plate (33) and the rotating cylinder I (20) to accurately control the polishing feed amount.

10. A method of using a bone pin breakage blunting device as in claim 2, wherein, The steps include: S1, the bone needle (3) pierces the silica gel film I (2), and the end of the bone needle (3) to be polished extends into the cup-shaped shell (1); S2, the cup-shaped shell (1) is closed through the threaded connection of the protective cover (8) and the outer threaded ring (7), and one end of the bone needle (3) extends into the inner spherical surface (6) of the grinding rod (5); S3, the grinding rod (5) is driven to rotate by the driving device, and the bone needle (3) is polished; S4, manually shake the grinding rod (5) for angle adjustment during polishing, and complete the polishing of the bone needle (3) from different angles; S5, when the grinding rod (5) is shaken, the end cover (10) always adheres to the top of the protective cover (8) to close the conical hole (9).

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