Buffering and damping type orthopedic drill bit

Abstract

The utility model discloses a buffering damping type orthopedic drill bit which comprises a drill bit handle assembly and a drill bit assembly connected to the lower portion of the drill bit handle assembly, the handle assembly comprises a transverse grip and a vertical connecting rod, and elastic buffering blocks are arranged in the two sides of the grip to absorb transverse vibration; the drill bit assembly comprises a drill bit and an extension rod, the top of the extension rod is provided with a butt joint rod, the butt joint rod is connected with a groove of the vertical connecting rod through a buffer spring to form axial buffering, an external protection sleeve is in linkage with a moving block to form secondary damping, the locking assembly is designed in a spring pre-tightening mode, dynamic self-locking is kept in a moving groove, and compared with a rigid structure, the offset is remarkably reduced; according to the design, the hand fatigue of an operator and the bone tissue micro-injury risk of a patient are reduced through a two-stage buffer system.

Description

A shock-absorbing orthopedic drill bit Technical Field

[0001] This utility model specifically relates to a buffer and shock-absorbing orthopedic drill bit. Background Technology

[0002] Orthopedic drills are specialized medical instruments used for cutting and drilling bone tissue, primarily for orthopedic internal fixation surgery, joint replacement surgery, and so on.

[0003] The vibrations generated by traditional orthopedic drills during drilling are directly transmitted to the patient's bones, which may cause microfractures or bone cracks. It can also easily cause the drill hole to deviate, reduce surgical precision, and ultimately prolong the patient's postoperative recovery period. The continuous vibration transmission during long-term surgery can cause hand fatigue in surgeons and affect the stability of the surgery.

[0004] Therefore, it is necessary to invent a shock-absorbing orthopedic drill bit to solve the above problems. Summary of the Invention

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a buffer-damping orthopedic drill bit that can reduce drill bit vibration during surgery.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a buffer and shock-absorbing orthopedic drill bit, comprising a drill bit handle assembly and a drill bit assembly connected below it;

[0009] The drill bit handle assembly includes a horizontal grip and a vertical connecting rod;

[0010] The drill bit assembly includes a drill bit and an extension rod connected to its top, and the vertical connecting rod is connected to the extension rod;

[0011] The horizontal grip has mounting grooves on both sides, and elastic shock-absorbing blocks are installed in the mounting grooves. The bottom inner side of the vertical connecting rod has a recessed groove, and multiple moving grooves are provided around the inner wall of the groove. The multiple moving grooves extend to the outer wall of the vertical connecting rod, and a receiving groove is provided at the top of the moving groove. A locking component is installed in the receiving groove.

[0012] The extension rod is provided with a connecting rod at the top, and a fixing groove is provided in the middle of the connecting rod. The fixing groove corresponds to the groove, and a buffer spring is installed between them. The top edge of the connecting rod is provided with multiple moving blocks. The moving blocks are placed in the moving groove, and a protective sleeve is connected to the outside of the multiple moving blocks. The protective sleeve is located outside the connecting rod.

[0013] Preferably, the locking component is placed in the receiving groove and includes a locking block. The locking block has a groove inside, and a locking spring is installed in the groove. One end of the locking spring is fixed to the bottom of the groove, and the other end is fixed to the bottom of the receiving groove.

[0014] Preferably, the length of the locking block is at least greater than the depth of the receiving groove, and the locking block is correspondingly pressed against the top of the moving block.

[0015] Preferably, a limiting ring is provided on the inner side of the bottom of the protective sleeve, and a shock-absorbing ring is fixed on the top of the limiting ring. The shock-absorbing ring matches the bottom of the vertical connecting rod, that is, the vertical connecting rod moves downward to the shock-absorbing ring and is limited.

[0016] Preferably, the overall length of the protective sleeve is the same as the overall length of the connecting rod.

[0017] Preferably, the elastic shock-absorbing blocks are installed inside both sides of the horizontal grip, and the cross-section of the elastic shock-absorbing blocks is I-shaped.

[0018] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0019] 1. This utility model effectively absorbs the lateral vibration generated during surgical operations by using an I-shaped elastic shock absorber built into the lateral grip. In the vertical direction, a two-stage buffer system is formed by the linkage between the buffer spring and the protective sleeve. The buffer spring provides axial elastic support, while the shock absorber acts as a secondary damping to absorb residual vibration, significantly reducing the risk of surgeon's hand fatigue and patient's bone tissue micro-damage.

[0020] 2. The innovative locking component of this utility model adopts a spring preloaded locking block, which maintains constant contact pressure during the displacement of the moving block along the moving groove, and can achieve dynamic self-locking under vibration conditions. Compared with the traditional rigid connection structure, the offset of the bone drill bit is reduced. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 is a schematic diagram of the disassembled structure of the elastic damping block of this utility model;

[0024] Figure 3 is a schematic diagram of the disassembled structure of the vertical connecting rod and the connecting rod of this utility model;

[0025] Figure 4 is a schematic diagram of the disassembled structure of the vertical connecting rod and the connecting rod of this utility model;

[0026] Figure 5 is a schematic diagram of the disassembled locking component of this utility model;

[0027] Figure 6 is a schematic diagram of the disassembled locking component of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Drill bit handle assembly; 11. Horizontal grip; 12. Vertical connecting rod; 13. Mounting slot; 14. Elastic damping block; 15. Groove; 16. Moving slot; 17. Receiving slot; 2. Drill bit assembly; 21. Drill bit; 22. Extension rod; 23. Connecting rod; 24. Fixing slot; 25. Buffer spring; 26. Moving block; 27. Protective sleeve; 28. Limiting ring; 29. ​​Damping ring; 3. Locking assembly; 31. Locking block; 32. Groove body; 33. Locking spring. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] This utility model provides a buffer and shock-absorbing orthopedic drill bit as shown in Figures 1-6, including a drill bit handle assembly 1 and a drill bit assembly 2 connected below it;

[0032] Specifically, the drill bit handle assembly 1 includes a lateral grip 11 and a vertical connecting rod 12;

[0033] Specifically, the drill assembly 2 includes a drill bit 21 and an extension rod 22 connected to its top, with a vertical connecting rod 12 connected to the extension rod 22;

[0034] Specifically, the horizontal grip 11 has mounting grooves 13 on both sides, and elastic shock absorbers 14 are installed in the mounting grooves 13. The bottom inner side of the vertical connecting rod 12 has a recessed groove 15. The inner wall of the groove 15 has multiple moving grooves 16 around it. The multiple moving grooves 16 extend to the outer wall of the vertical connecting rod 12, and the top of the moving groove 16 is also provided with a receiving groove 17. The receiving groove 17 is also installed with a locking component 3.

[0035] Specifically, the extension rod 22 is provided with a connecting rod 23 at the top, and a fixing groove 24 is provided in the middle of the connecting rod 23. The fixing groove 24 corresponds to the groove 15, and a buffer spring 25 is installed between the two. Multiple moving blocks 26 are provided on the top edge of the connecting rod 23. The moving blocks 26 are placed in the moving groove 16, and a protective sleeve 27 is connected to the outside of the multiple moving blocks 26. The protective sleeve 27 is located outside the connecting rod 23.

[0036] In this embodiment, the elastic damping block 14 is installed by embedding the I-shaped elastic damping block 14 into the mounting grooves 13 on both sides of the transverse grip 11, using its elastic deformation to absorb lateral vibrations during operation. The drill bit assembly 3 is connected by connecting the extension rod 22 of the drill bit assembly 2 to the groove 15 of the vertical connecting rod 12 via the connecting rod 23. The buffer spring 25 is placed between the groove 15 and the fixing groove 24 to provide longitudinal shock absorption support.

[0037] Specifically, the assembly of the movable block 26 and the protective sleeve 27 involves the movable block 26 passing through the movable slot 16 of the vertical connecting rod 12, with the top being pressed and fixed by the locking component 3, and the protective sleeve 27 being sleeved on the outside to make it consistent with the length of the connecting rod 23, thus forming a sealed protection.

[0038] Specifically, the pre-pressure of the locking component 3 is achieved by the locking block 31 being pre-pressed into the receiving groove 17 by the locking spring 33. Under normal conditions, the bottom of the locking block 31 is tightly attached to the top of the moving block 26 to prevent the drill bit assembly from accidentally coming out.

[0039] Specifically, the locking component 3 is placed in the receiving groove 17 and includes a locking block 31. The locking block 31 has a groove 32 inside, and a locking spring 33 is installed in the groove 32. One end of the locking spring 33 is fixed to the bottom of the groove 32, and the other end is fixed to the bottom of the receiving groove 17.

[0040] Specifically, the length of the locking block 31 is at least greater than the depth of the receiving groove 17, and the locking block 31 is pressed against the top of the moving block 26.

[0041] Specifically, a limiting ring 28 is provided on the inner side of the bottom of the protective sleeve 27, and a damping ring 29 is fixed on the top of the limiting ring 28. The damping ring 29 matches the bottom of the vertical connecting rod 12, that is, the vertical connecting rod 12 moves downward to the damping ring 29 and is limited.

[0042] Specifically, the overall length of the protective sleeve 27 is the same as the overall length of the connecting rod 23.

[0043] Specifically, elastic shock absorbers 14 are installed inside both sides of the horizontal grip 11, and the cross-section of the elastic shock absorber 14 is I-shaped.

[0044] In this embodiment, when the doctor holds the lateral grip 11 and applies drilling force, the vertical connecting rod 12 moves downward along the protective sleeve 27, compressing the buffer spring 25; lateral vibration is absorbed by the elastic shock absorber 14. When the drill bit 21 contacts the bone, the impact force is transmitted to the buffer spring 25 through the extension rod 22, and the spring compresses to absorb energy, avoiding rigid impact. The elastic shock absorbers 14 on both sides of the grip 11 deform to counteract the lateral force generated by hand shaking. When the drill bit is pressed down, the moving block 26 is pressured to push the locking block 31 upward, the locking spring 33 is compressed, and the locking block 31 temporarily slides into the receiving groove 17, allowing the drill bit assembly to move downward. After the pressure is removed, the locking spring 33 pushes the locking block 31 back to its original position, re-pressing the moving block 26 and fixing the position of the drill bit assembly. When the vertical connecting rod 12 moves downward, its bottom contacts the shock absorber 29 inside the protective sleeve 27, and the limiting ring 28 prevents excessive downward pressure, avoiding structural damage.

[0045] In this embodiment, the longitudinal shock absorber 25 absorbs the impact of the drill bit, while the lateral elastic shock absorber 14 suppresses grip vibration, significantly reducing hand fatigue for doctors. The locking assembly 3 automatically adjusts during operation, ensuring the stability of the drill bit 21 while allowing for quick disassembly and replacement of the drill bit assembly. The protective sleeve 27 completely encloses the connecting rod 23 to prevent bone fragments from intruding into the mechanical structure. The shock absorber 29 is made of medical-grade silicone and can withstand more than 100,000 compressions without plastic deformation. The I-shaped shock absorber of the lateral grip 11 conforms to the curvature of the palm, and together with the limiting mechanism of the protective sleeve 27, improves operating accuracy by 30%, making it particularly suitable for high-precision scenarios such as minimally invasive spinal surgery.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A shock-absorbing orthopedic drill bit, characterized in that: The system includes a drill bit handle assembly (1) and a drill bit assembly (2) connected below it; the drill bit handle assembly (1) includes a horizontal grip (11) and a vertical connecting rod (12); the drill bit assembly (2) includes a drill bit (21) and an extension rod (22) connected to its top, and the vertical connecting rod (12) is connected to the extension rod (22); the horizontal grip (11) has mounting grooves (13) on both sides inside, and elastic shock absorbers (14) are installed in the mounting grooves (13); the bottom inner side of the vertical connecting rod (12) has a recessed groove (15), and the inner wall of the groove (15) is provided with multiple moving grooves (16), and the multiple moving grooves (16) extend to the vertical connecting rod. The outer wall of the rod (12) and the top of the moving groove (16) are provided with a receiving groove (17), and a locking component (3) is installed in the receiving groove (17); the top of the extension rod (22) is provided with a docking rod (23), the middle part of the docking rod (23) is provided with a fixing groove (24), the fixing groove (24) corresponds to the groove (15), and a buffer spring (25) is installed between the two. The top edge of the docking rod (23) is provided with multiple moving blocks (26), the moving blocks (26) are placed in the moving groove (16), and the external of the multiple moving blocks (26) is connected to a protective sleeve (27), and the protective sleeve (27) is provided outside the docking rod (23).

2. The shock-absorbing orthopedic drill bit according to claim 1, characterized in that: The locking component (3) is placed in the receiving groove (17) and includes a locking block (31). The locking block (31) has a groove (32) inside. A locking spring (33) is installed in the groove (32). One end of the locking spring (33) is fixed to the bottom of the groove (32), and the other end is fixed to the bottom of the receiving groove (17).

3. The shock-absorbing orthopedic drill bit according to claim 2, characterized in that: The length of the locking block (31) is at least greater than the depth of the receiving groove (17), and the locking block (31) is pressed against the top of the moving block (26).

4. The shock-absorbing orthopedic drill bit according to claim 1, characterized in that: The protective sleeve (27) has a limiting ring (28) on the inner side of the bottom. A damping ring (29) is fixed on the top of the limiting ring (28). The damping ring (29) matches the bottom of the vertical connecting rod (12), that is, the vertical connecting rod (12) moves down to the damping ring (29) and is limited.

5. The shock-absorbing orthopedic drill bit according to claim 1, characterized in that: The overall length of the protective sleeve (27) is the same as the overall length of the connecting rod (23).

6. The buffer-damping orthopedic drill bit according to claim 1, characterized in that: The elastic damping blocks (14) are installed inside both sides of the horizontal grip (11), and the cross section of the elastic damping blocks (14) is I-shaped.

Images