A medical orthopedic drill bit convenient to replace

Abstract

This utility model discloses a replaceable orthopedic drill bit for medical orthopedics, relating to the field of medical orthopedic instrument technology. It includes a drill rod with multiple threaded grooves at its upper end and a connecting assembly at its lower end. Multiple equidistant limiting grooves and an annular rotating groove are formed on the outer side of the lower end of the drill rod. A limiting component is installed within the connecting assembly. This utility model, through the cooperation of the limiting grooves and limiting blocks, facilitates the restriction of the drill rod's position, preventing rotation and improving the stability of the device. The cooperation of the rotating block and the slider facilitates quick assembly and disassembly of the drill rod, improving the efficiency of the device's assembly and disassembly. The cooperation of the spring and the telescopic rod allows the slider to limit the displacement of the rotating rod, facilitating automatic locking of the slider and improving the efficiency of the rotating rod's assembly and disassembly. This device improves the stability of the drill rod and increases the speed of its assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of medical orthopedic instruments, and in particular to a medical orthopedic drill bit that is easy to replace. Background Technology

[0002] Easily replaceable orthopedic drills are instruments designed to improve surgical efficiency. Through a snap-fit ​​design, spring-locking mechanism, and detachable connection, they allow for quick replacement of different drill models, meeting diverse orthopedic surgical needs, reducing operational complexity, and minimizing intraoperative time. Their applications cover minimally invasive surgeries such as spinal and joint replacement surgeries, balancing flexibility and safety, and adapting to the high precision and efficiency requirements of modern medicine. Existing orthopedic drills typically connect the drill rod to the shaft via a connector, and then secure the drill rod with a tightening device. However, this method requires pressing the drill rod into the connector and then tightening it, making drill rod replacement during surgery cumbersome and reducing surgical efficiency. Therefore, improvements are needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a medical orthopedic drill bit that is easy to replace.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a medical orthopedic drill bit that is easy to replace, comprising a drill rod, wherein the upper end of the drill rod has multiple threaded grooves and the lower end of the drill rod is equipped with a connecting component; the outer side of the lower end of the drill rod has multiple equidistant limiting grooves and an annular rotating groove; and the connecting component is equipped with a limiting component.

[0005] Preferably, the connecting assembly includes a connecting block installed at the lower end of the drill pipe. The lower end of the connecting block is closed and has a threaded groove on its outer side, and the top surface of the connecting block has a movable groove. The lower end of the connecting block has an external thread, and the middle of the connecting block has an annular mounting groove. The bottom surface of the annular mounting groove has multiple sliding grooves at equal intervals. One end of the sliding groove is connected to the movable groove. Multiple limiting blocks are installed at equal intervals on the upper end of the inner wall of the movable groove, and the limiting blocks are placed in the limiting groove.

[0006] Preferably, the limiting component includes a rotating block with a T-shaped cross-section that is sleeved on the outside of the connecting block. One end of the rotating block is placed in an annular mounting groove, and multiple equidistant arc-shaped grooves are opened on the circumferential side of the inner bottom surface of the rotating block.

[0007] Preferably, a telescopic rod is installed laterally on one side of the slide groove. One end of the telescopic rod is fixed to the connecting block, and the other end of the telescopic rod is fixed to a slider. One end of the slider is placed in the slide groove, and the slider cooperates with the annular rotating groove. A spring is sleeved on the outside of the telescopic rod.

[0008] Preferably, a sliding rod is installed above one end of the slider, the sliding rod is fixed to the top surface of the slider, and the sliding rod slides within the arc-shaped groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the limiting groove and the limiting block facilitates the restriction of the position of the drill rod, prevents the drill rod from rotating, and improves the stability of the device. The cooperation between the rotating block and the slider facilitates the quick assembly and disassembly of the drill rod, which is convenient for the operation and improves the assembly and disassembly efficiency of the device. The cooperation between the spring and the telescopic rod facilitates the slider to limit the displacement of the rotating rod and facilitates the automatic locking of the slider, which improves the assembly and disassembly efficiency of the rotating rod. This device improves the stability of the drill rod and increases the assembly and disassembly speed of the drill rod. Attached Figure Description

[0010] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0011] Figure 1 This is a three-dimensional schematic diagram of the overall structure proposed in this utility model;

[0012] Figure 2 This is a schematic diagram of the overall structure proposed in this utility model from another perspective;

[0013] Figure 3 This is a cross-sectional schematic diagram of the connecting component proposed in this utility model;

[0014] Figure 4 This is a three-dimensional schematic diagram of the limiting component proposed in this utility model;

[0015] Figure 5 This is a three-dimensional schematic diagram of the drill bit structure proposed in this utility model.

[0016] The numbers in the diagram are: 1. Drill rod; 2. Connecting block; 3. Rotating block; 4. Sliding block; 5. Limiting block; 6. Telescopic rod; 7. Spring; 8. Slide rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example: See Figure 1-5This utility model discloses a replaceable orthopedic drill bit for medical use, comprising a drill rod 1. The upper end of the drill rod 1 has multiple threaded grooves, and a connecting assembly is installed at the lower end of the drill rod 1. Multiple equidistant limiting grooves are formed on the outer side of the lower end of the drill rod 1, and an annular rotating groove is formed on the outer side of the lower end of the drill rod 1. A limiting component is installed inside the connecting assembly, which fixes the drill rod 1 within a connecting block 2. The connecting assembly includes a connecting block 2 installed at the lower end of the drill rod 1. The lower end of the connecting block 2 is closed, and a threaded groove is formed on its outer side. A movable groove is formed on the top surface of the connecting block 2, facilitating drilling of the bone by the drill rod 1 through the threaded groove. An external thread is formed at the lower end of the connecting block 2, and an annular mounting groove is formed in the middle of the connecting block 2. Multiple sliding grooves are formed at equal intervals on the bottom surface of the annular mounting groove. One end of the sliding groove is connected to the movable groove. Multiple limiting blocks 5 are installed at equal intervals on the upper end of the inner wall of the movable groove, and the limiting blocks 5 are placed within the limiting groove to prevent the drill rod 1 from rotating.

[0019] In this utility model, the limiting component includes a rotating block 3 with a T-shaped cross-section that is sleeved on the outside of the connecting block 2. One end of the rotating block 3 is placed in an annular mounting groove, and multiple equidistant arc-shaped grooves are opened on the circumference of the bottom surface of the rotating block 3. The arc-shaped grooves facilitate the control of the retraction of the slider 4 by the rotating block 3. A telescopic rod 6 is horizontally installed on one side of the groove. One end of the telescopic rod 6 is fixed to the connecting block 2, and the other end of the telescopic rod 6 is fixed to the slider 4. One end of the slider 4 is placed in the groove, and the slider 4 cooperates with the annular rotating groove. A spring 7 is sleeved on the outside of the telescopic rod 6. The telescopic rod 6 and the spring 7 facilitate the automatic locking of the slider 4 into the limiting groove. A sliding rod 8 is installed above one end of the slider 4. The sliding rod 8 is fixed to the top surface of the slider 4, and the sliding rod 8 slides in the arc-shaped groove. The sliding rod 8 facilitates the control of the retraction of the slider 4 by the rotating block 3.

[0020] Working principle: When using this utility model, first connect the connecting block 2 to the drill shaft with a thread. Then, rotate the rotating block 3 to retract the sliding rod 8, which in turn causes the slider 4 to compress the spring 7 and the telescopic rod 6 to retract. When the slider 4 retracts into the groove, the drill rod 1 can be pressed in along the limiting block 5. At this time, release the rotating block 3, and the slider 4 will rebound under the action of the spring 7 and then be locked into the lower end of the limiting groove. At this time, the drill rod 1 is installed and the machine can be started for surgery. When the drill rod 1 needs to be replaced, simply rotate the rotating block 3 to retract the slider 4 into the groove. Then, the drill rod 1 can be pulled out along the limiting block 5. At the same time, press the drill rod 1 to be replaced into the connecting block 2 along the limiting block 5 and release the rotating block 3 to fix the new drill rod 1. At this time, the replacement of the drill rod 1 is completed.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A medical orthopedic drill bit that is easy to replace, comprising a drill rod (1), characterized in that: The upper end of the drill rod (1) has multiple threaded grooves, and the lower end of the drill rod (1) is equipped with a connecting component; the outer side of the lower end of the drill rod (1) has multiple equidistant limiting grooves, and the outer side of the lower end of the drill rod (1) has an annular rotating groove, and the connecting component is equipped with a limiting component.

2. The medical orthopedic drill bit of claim 1, wherein: The connecting assembly includes a connecting block (2) installed at the lower end of the drill rod (1). The lower end of the connecting block (2) is closed and a threaded groove is provided on the outer side. The top surface of the connecting block (2) is provided with a movable groove. The lower end of the connecting block (2) is provided with an external thread, and the middle part of the connecting block (2) is provided with an annular mounting groove. Multiple sliding grooves are provided at equal intervals on the bottom surface of the annular mounting groove. One end of the sliding groove is connected to the movable groove. Multiple limiting blocks (5) are installed at equal intervals on the upper end of the inner wall of the movable groove. The limiting blocks (5) are placed in the limiting groove.

3. The medical orthopedic drill bit of claim 1, wherein: The limiting component includes a rotating block (3) with a T-shaped cross-section that is sleeved on the outside of the connecting block (2). One end of the rotating block (3) is placed in an annular mounting groove, and multiple equidistant arc-shaped grooves are opened on the inner bottom surface of the rotating block (3).

4. The medical orthopedic drill bit of claim 2, wherein: A telescopic rod (6) is installed laterally on one side of the slide groove. One end of the telescopic rod (6) is fixed to the connecting block (2), and the other end of the telescopic rod (6) is fixed to a slider (4).

5. The medical orthopedic drill bit of claim 4, wherein: One end of the slider (4) is placed in the groove, and the slider (4) is engaged with the annular rotating groove. A spring (7) is sleeved on the outside of the telescopic rod (6).

6. The medical orthopedic drill bit of claim 5, wherein: A slide rod (8) is installed above one end of the slider (4). The slide rod (8) is fixed to the top surface of the slider (4) and slides within the arc groove.

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