Introducer based on internal fixation bone nail

Abstract

The utility model relates to the technical field of medical instruments, and discloses a leading-in device based on internal fixation bone nails, which comprises fixing rings, adjusting plates and a fixing shell, an adjusting mechanism is arranged between the two adjacent fixing rings, the adjusting mechanism is used for adjusting the distance between the adjusting plates, the bone nails can be conveniently placed, and the fixing shell is arranged on the adjusting plates. An auxiliary mechanism is arranged on the inner wall of the fixing shell and used for reducing friction to tools and prolonging the service life, and an observation mechanism is arranged on the outer wall of the adjusting plate and used for improving the operation precision. The adjusting mechanism comprises a plurality of connecting rods. According to the bone nail adjusting device, the adjusting rings are driven to slide upwards by rotating the adjusting bolts, so that the inclined blocks are extruded through the adjusting rings, the adjusting plates are driven to contract inwards, meanwhile, the adjusting plates are unfolded through cooperation with the springs on the connecting rods, and bone nails of different sizes are rapidly adjusted and used.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an implantation device based on internal fixation bone screws. Background Technology

[0002] In the field of orthopedic medicine, internal fixation surgery is one of the important means of treating fractures. With the continuous development of medical technology, the requirements for the accuracy and stability of fracture repair are increasing. During the operation, the implantation of bone nails is a key step, and its quality directly affects the fracture healing effect and the patient's recovery. The implantation device plays a key role in this process.

[0003] During surgery, doctors use a guide to more precisely control the placement, direction, and depth of bone screw implantation. Its guide part acts like a precise navigation system, guiding the bone screw along a predetermined ideal path into the bone. Taking spinal fracture surgery as an example, the guide helps doctors accurately implant bone screws, avoiding damage to the spinal cord, an extremely fragile and critical nerve tissue. Using a guide can also significantly shorten the operation time. In limb fracture surgery, it can make the bone screw implantation process smoother and more efficient, reduce the patient's exposure time on the operating table, and lower the risk of infection.

[0004] The limited size range of implants means they cannot provide a tight fit for bone screws of different diameters and lengths, leading to wobble or jamming during implantation and hindering the smooth progress of the surgery. Current solutions involve producing a series of implants with different diameters to accommodate different sizes of bone screws. However, given the precious time available for surgery, the process of finding and replacing the implant with a suitable one for the patient's required screw is time-consuming, thus slowing down the procedure. Therefore, this paper proposes an implant based on internal fixation bone screws to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an implant based on internal fixation bone screws, aiming to improve the problem of quickly adjusting the implant according to bone screws of different diameters and lengths in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an implant based on internal fixation bone screws, comprising a fixing ring, an adjusting plate, and a fixing shell. An adjusting mechanism is provided between adjacent fixing rings to adjust the distance between the adjusting plates, facilitating the placement of the bone screws. An auxiliary mechanism is provided on the inner wall of the fixing shell to reduce friction on the tool and improve its service life. An observation mechanism is provided on the outer wall of the adjusting plate to improve the accuracy of operation.

[0007] The adjusting mechanism includes multiple connecting rods. Each adjacent end of one of the connecting rods is slidably connected to the outer wall of a fixed ring. A spring is fixedly connected to the outer wall of each connecting rod. Each adjacent end of one connecting rod passes through the outer wall of the fixed ring and is fixedly connected to the opposite side of an adjusting plate. An inclined block is fixedly connected to the opposite side of each adjusting plate. An adjusting ring is slidably connected to the outer wall of each inclined block. Connecting blocks are fixedly connected to the left and right sides of the outer wall of the adjusting ring. Fixed blocks are fixedly connected to the left and right sides of the outer wall of the top fixed ring. Adjusting bolts are threaded to the tops of two fixed blocks. The bottom ends of two adjusting bolts pass through the tops of the fixed blocks and are rotatably connected to the tops of the connecting blocks.

[0008] As a further description of the above technical solution:

[0009] The auxiliary mechanism includes a connecting ring, the outer wall of which is fixedly connected to the top of the inner wall of the fixed shell. The inner wall of the connecting ring has a sliding groove and a rotating ring. Connecting members are fixedly connected to the outer wall of the rotating ring on all four sides. Each of the connecting members has a pulley rotatably connected inside. The outer walls of the pulleys are slidably connected to the inner wall of the sliding groove. A rubber ring is fixedly connected to the inner wall of the rotating ring.

[0010] As a further description of the above technical solution:

[0011] The observation mechanism includes a mounting groove, which is formed at the bottom of the outer wall of the adjustment plate, and a mounting plate is fixedly connected to the inner wall of the mounting groove.

[0012] As a further description of the above technical solution:

[0013] A transparent plate is fixedly connected to the inner wall of the mounting plate, and the outer wall of the transparent plate is provided with graduations.

[0014] As a further description of the above technical solution:

[0015] The bottom of the adjusting plate is provided with a groove, and the outer wall of the adjusting plate is rounded.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the top fixing ring is fixedly connected with reinforcing plates on all four sides, and the adjacent sides of the multiple reinforcing plates are fixedly connected to the outer wall of the fixing shell.

[0018] As a further description of the above technical solution:

[0019] The transparent plate and the mounting plate are integrally formed, and the adjacent ends of the multiple springs are fixedly connected to the outer wall of the fixing ring.

[0020] As a further description of the above technical solution:

[0021] Both of the fixed blocks are designed symmetrically, and the multiple adjusting plates are arranged symmetrically at equal intervals.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the adjustment plate is composed of four pieces, forming a channel for the sliding of bone screws. By rotating the adjustment bolt, the adjustment ring is driven to slide upward, thereby squeezing multiple inclined blocks through the adjustment ring, causing multiple adjustment plates to retract inward. At the same time, by cooperating with the spring on the connecting rod, the adjustment plate can be unfolded, thereby realizing the rapid adjustment and use of bone screws of different sizes. A transparent plate is set at the bottom of the adjustment plate, which facilitates medical staff to observe the surgical position in real time and improves the accuracy of operation during surgery.

[0024] 2. In this utility model, after the bone needle is placed between the adjustment plates, the reinforcement tool is inserted into the fixing shell, and the bone needle is fixed in the bone by rotating the reinforcement tool to ensure the firmness of the bone needle. When the reinforcement tool is rotated, the outer wall fits against the rubber ring, which can avoid friction with the inner wall of the fixing shell. At the same time, it can ensure that the reinforcement tool is rotated perpendicular to the bone needle for reinforcement, and avoid displacement and loosening. Attached Figure Description

[0025] Figure 1 This is a perspective view of the implantation device based on internal fixation bone screws proposed in this utility model;

[0026] Figure 2 This is a partial structural diagram of the implanter based on internal fixation bone screws proposed in this utility model;

[0027] Figure 3 This is an exploded view of the implantation device based on internal fixation bone screws proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the adjustment plate of the internal fixation bone screw-based implanter proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the transparent plate of the implanter based on internal fixation bone screws proposed in this utility model.

[0030] Legend:

[0031] 1. Fixed ring; 2. Adjusting plate; 3. Connecting rod; 4. Spring; 5. Inclined block; 6. Adjusting ring; 7. Connecting block; 8. Fixed block; 9. Adjusting bolt; 10. Fixed shell; 11. Connecting ring; 12. Slide groove; 13. Rotary ring; 14. Connecting piece; 15. Pulley; 16. Rubber ring; 17. Reinforcing plate; 18. Groove; 19. Transparent plate; 20. Mounting groove; 21. Scale; 22. Mounting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 5 This utility model provides an embodiment of an internal fixation bone screw inserter, comprising a fixing ring 1, an adjusting plate 2, and a fixing shell 10. The adjusting plate 2 is composed of four pieces, forming a channel for the sliding of the bone screw. An adjusting mechanism is provided between adjacent fixing rings 1 to adjust the distance between the adjusting plates 2, facilitating the placement of the bone screw. An auxiliary mechanism is provided on the inner wall of the fixing shell 10 to reduce friction on the tool and improve its service life. An observation mechanism is provided on the outer wall of the adjusting plate 2 to improve the accuracy of operation. The structure includes a mounting groove 20, which is located at the bottom of the outer wall of the adjustment plate 2. A mounting plate 22 is fixedly connected to the inner wall of the mounting groove 20. A transparent plate 19 and the mounting plate 22 are integrally formed. The transparent plate 19 is located at the bottom of the adjustment plate 2, which facilitates medical staff to observe the surgical position in real time and improves the accuracy of operation during surgery. The adjacent ends of multiple springs 4 are fixedly connected to the outer wall of the fixing ring 1. A transparent plate 19 is fixedly connected to the inner wall of the mounting plate 22. The outer wall of the transparent plate 19 is provided with a scale 21. The length of the bone needle can be measured through the design of the scale 21.

[0034] The adjustment mechanism includes multiple connecting rods 3. Each adjacent end of a connecting rod 3 is slidably connected to the outer wall of a fixed ring 1. The connecting rods 3 are interconnected with the fixed ring 1. Springs 4 are fixedly connected to the outer walls of each connecting rod 3. Each adjacent end of a connecting rod 3 passes through the outer wall of the fixed ring 1 and is fixedly connected to the opposite side of an adjusting plate 2. The connecting rods 3 connect and limit the adjusting plate 2, allowing it to retract and expand. Inclined blocks 5 are fixedly connected to the opposite sides of each adjusting plate 2. Adjusting rings 6 are slidably connected to the outer walls of each inclined block 5. The inclined blocks 5 and the adjusting plate 2 are integrated, with the inclined surface of the inclined blocks 5 facing downwards. Adjusting rings 6 are slidably mounted on the outer walls of each inclined block 5. Connecting springs 4 are fixedly connected to the left and right sides of the outer walls of the adjusting rings 6. Block 7 has two fixing blocks 8 fixedly connected to the left and right sides of the outer wall of the top fixing ring 1. The top of each fixing block 8 is threaded with an adjusting bolt 9. The adjusting bolt 9 is fixed by the fixing block 8. By rotating the adjusting bolt 9, the adjusting ring 6 is driven to slide upward, thereby squeezing multiple inclined blocks 5 through the adjusting ring 6, causing multiple adjusting plates 2 to retract inward. By cooperating with the spring 4 on the connecting rod 3, the adjusting plates 2 are unfolded, thereby realizing the rapid adjustment and use of bone screws of different sizes, improving the stability and accuracy of bone screws in positioning and insertion. The bottom ends of the two adjusting bolts 9 pass through the top of the fixing block 8 and are rotatably connected to the top of the connecting block 7. Both fixing blocks 8 adopt a symmetrical design, and the multiple adjusting plates 2 are arranged symmetrically at equal intervals.

[0035] Reference Figure 1 and Figure 3 The auxiliary mechanism includes a connecting ring 11, the outer wall of which is fixedly connected to the top of the inner wall of the fixed housing 10. The connecting ring 11 is mounted on the top of the inner wall of the fixed housing 10. A sliding groove 12 is provided on the inner wall of the connecting ring 11. A rotating ring 13 is provided on the inner wall of the connecting ring 11. Connecting members 14 are fixedly connected to the outer walls of the rotating ring 13. Pulleys 15 are rotatably connected inside the multiple connecting members 14. The outer walls of the multiple pulleys 15 are slidably connected to the inner wall of the sliding groove 12. The rotating ring 13 is connected to the inner wall of the connecting ring 11 by the pulleys 15 around its outer walls. The groove 12 is connected to achieve the integration of the auxiliary mechanism. The pulley 15 is installed on the rotating ring 13 through the connector 14 to ensure the firmness of the rotating ring 13 and the connecting ring 11. The inner wall of the rotating ring 13 is fixedly connected with a rubber ring 16. After the bone needle is placed between the adjustment plates 2, the reinforcement tool is inserted into the fixing shell 10, and the bone needle is fixed in the bone by rotating the reinforcement tool to ensure the firmness of the bone needle. When the reinforcement tool is rotated, the outer wall fits against the rubber ring 16, which can avoid friction with the inner wall of the fixing shell 10.

[0036] Reference Figure 1 and Figure 5The bottom of the adjustment plate 2 is provided with a groove 18, which is toothed and can fix the adjustment plate 2 to the surgical position to avoid instability during operation. The outer wall of the adjustment plate 2 is rounded. The outer wall of the top fixing ring 1 is fixedly connected with reinforcing plates 17 on all four sides. The adjacent sides of the multiple reinforcing plates 17 are fixedly connected to the outer wall of the fixing shell 10. The fixing shell 10 and the fixing ring 1 are reinforced by the reinforcing plates 17 to ensure the stability of the device.

[0037] Working principle: First, the adjustment plate 2 is composed of four pieces, forming a channel for the sliding of bone screws. By rotating the adjustment bolt 9, the adjustment ring 6 is driven to slide upward, thereby squeezing multiple inclined blocks 5 through the adjustment ring 6, causing multiple adjustment plates 2 to retract inward. With the help of the spring 4 on the connecting rod 3, the adjustment plate 2 is unfolded, thus realizing the rapid adjustment and use of bone screws of different sizes. The transparent plate 19 is set at the bottom of the adjustment plate 2, which facilitates medical staff to observe the surgical position in real time and improves the accuracy of operation during surgery.

[0038] Furthermore, the connecting ring 11 is installed on the top of the inner wall of the fixed shell 10, and the rotating ring 13 is connected to the sliding groove 12 on the inner wall of the connecting ring 11 through the pulleys 15 around the outer wall, so as to realize the integration of the auxiliary mechanism. After the bone needle is placed between the adjusting plates 2, the reinforcing tool is inserted into the fixed shell 10, and the bone needle is fixed in the bone by rotating the reinforcing tool to ensure the firmness of the bone needle. When the reinforcing tool is rotated, the outer wall is in contact with the rubber ring 16, which can avoid friction with the inner wall of the fixed shell 10, and at the same time ensure that the reinforcing tool is rotated perpendicular to the bone needle for reinforcement, so as to avoid displacement and loosening.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An introducer for internal fixation bone pins, comprising a fixing ring (1), an adjusting plate (2) and a fixing shell (10), characterized in that: Two adjacent said fixed ring (1) is provided with adjusting mechanism, the adjusting mechanism is used for adjusting the distance between the adjusting plate (2), facilitate the placement of bone nail, the inner wall of the fixed shell (10) is provided with auxiliary mechanism, the auxiliary mechanism is used for reducing the friction of tool, improve the service life, the outer wall of the adjusting plate (2) is provided with observation mechanism, the observation mechanism is used for improving the accuracy of operation; The adjusting mechanism comprises a plurality of connecting rods (3), the outer wall of the connecting rod (3) is slidably connected with the outer wall of the fixed ring (1), the outer wall of the connecting rod (3) is fixedly connected with the spring (4), the outer wall of the connecting rod (3) is slidably connected with the outer wall of the fixed ring (1), the outer wall of the connecting rod (3) is fixedly connected with the adjusting plate (2), the outer wall of the adjusting plate (2) is fixedly connected with the inclined block (5), the outer wall of the inclined block (5) is slidably connected with the adjusting ring (6), the outer wall of the adjusting ring (6) is fixedly connected with the connecting block (7), the outer wall of the fixed ring (1) is fixedly connected with the fixed block (8), the top of the fixed block (8) is fixedly connected with the adjusting bolt (9), the bottom of the adjusting bolt (9) is rotatably connected with the connecting block (7).

2. The bone nail-based introducer according to claim 1, characterized in that: The auxiliary mechanism comprises a connecting ring (11), the outer wall of the connecting ring (11) is fixedly connected with the inner wall of the fixed shell (10), the inner wall of the connecting ring (11) is provided with a sliding groove (12), the inner wall of the connecting ring (11) is provided with a rotating ring (13), the outer wall of the rotating ring (13) is fixedly connected with the connecting piece (14), the inner wall of the connecting piece (14) is rotatably connected with the pulley (15), the outer wall of the pulley (15) is slidably connected with the inner wall of the sliding groove (12), the inner wall of the rotating ring (13) is fixedly connected with the rubber ring (16).

3. The bone pin based introducer of claim 1, wherein: The observation mechanism comprises a mounting groove (20), the mounting groove (20) is formed in the outer wall of the adjusting plate (2), and the inner wall of the mounting groove (20) is fixedly connected with the mounting plate (22).

4. The bone pin based introducer of claim 3, wherein: The inner wall of the mounting plate (22) is fixedly connected with the transparent plate (19), and the outer wall of the transparent plate (19) is provided with a scale (21).

5. The bone pin based introducer of claim 1, wherein: The bottom of the adjusting plate (2) is provided with a cutting groove (18), and the outer wall of the adjusting plate (2) is smoothly processed.

6. The bone pin based introducer of claim 1, wherein: The outer wall of the top of the fixed ring (1) is fixedly connected with the reinforcing plate (17), and the outer wall of the top of the fixed ring (1) is fixedly connected with the reinforcing plate (17).

7. The bone pin based introducer of claim 4, wherein: The transparent plate (19) and the mounting plate (22) are integrally formed, and the outer wall of the top of the fixed ring (1) is fixedly connected with the reinforcing plate (17).

8. The bone pin based introducer of claim 1, wherein: The two fixed blocks (8) are symmetrically designed, and the plurality of adjusting plates (2) are symmetrically arranged at equal distances.

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