Orthopedic drill bit with controllable drilling depth

Abstract

The utility model discloses an orthopedic drill bit with controllable drilling depth, which comprises a fixing sleeve for fixing a drill bit body, and a limiter and a locking component are mounted at the bottom of the fixing sleeve; a plurality of telescopic holes are formed in the bottom of the fixed sleeve; the limiting stopper comprises a limiting ring, a plurality of moving rods are installed at the top of the limiting ring, springs are further installed at the ends of the moving rods, and the moving rods, namely the springs, are all installed in the telescopic holes; by means of the limiting stopper and the scales, a user can accurately set and read the drilling depth according to needs, and the drilling accuracy and safety in the operation process are guaranteed; due to the design of the movable rod and the telescopic hole, the depth can be adjusted easily and rapidly, and the operation flexibility in the operation process is improved; the limiting ring and the locking assembly are combined for use, the drill bit can be effectively prevented from excessively drilling in, and therefore bone tissue and surrounding soft tissue of a patient are protected against damage.

Description

Technical Field

[0001] The utility model particularly relates to an orthopedic drill bit with controllable drilling depth. Background Art

[0002] Orthopedic drill bits are commonly used in orthopedic surgery, particularly in fracture treatment, joint replacement, and bone marrow extraction procedures. They enable precise drilling of holes in bone to facilitate the installation of fixtures or the extraction of bone marrow. These drill bits are typically made of high-strength, wear-resistant materials such as stainless steel or titanium alloy to ensure efficiency and safety during surgery.

[0003] When using conventional orthopedic drills, doctors rely heavily on feel and experience to determine the desired drilling depth. This method can be inaccurate in certain complex or stressful surgical situations, leading to suboptimal surgical outcomes. Furthermore, conventional orthopedic drills often lack effective depth control mechanisms, which can lead to over-drilling, impacting adjacent tissues or structures, such as nerves or blood vessels, and increasing the risk of postoperative complications. Without depth control, multiple drilling attempts may be required to reach the desired depth, which not only increases surgical time but also increases the risk of bone damage and infection.

[0004] Therefore, it is necessary to invent an orthopedic drill with controllable drilling depth to solve the above problems. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes an orthopedic drill bit with controllable drilling depth, which has a depth control positioning function to prevent the drilling from being too deep.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: an orthopedic drill bit with controllable drilling depth, comprising a fixed sleeve for fixing the drill bit body, a limiter and a locking assembly being installed at the bottom of the fixed sleeve;

[0009] The bottom of the fixed sleeve is provided with a plurality of telescopic holes;

[0010] The limiter includes a limit ring, a plurality of movable rods are installed on the top of the limit ring, and springs are installed at the ends of the plurality of movable rods, and the plurality of movable rods, i.e., the springs, are all installed in the telescopic hole;

[0011] The locking assembly is fixed to the bottom of the fixed sleeve and is located outside the multiple telescopic holes. The locking assembly includes a fixing box, a pressing block is installed in the fixing box, one end of the pressing block is connected to a fastening tube, and a matching fixing ring is also provided on the periphery of the telescopic hole. The fastening tube is used in conjunction with the fixing ring. A receiving groove is provided inside the pressing block, and multiple compression springs are installed in the receiving groove. The other end of the compression spring is fixed to the top of the fixing box, that is, fixed to the bottom of the fixing sleeve. Positioning holes are also provided on both sides of the fixing box, and locking spring blocks are also provided on both sides of the pressing block corresponding to the positioning holes.

[0012] Preferably, the plurality of moving rods are evenly spaced, the locking assembly is fixed to the outside of each moving rod, and the fastening cylinder and the fixing ring are both sleeved on the outside of the moving rod. The movement of the pressing block drives the fastening cylinder to move into the fixing ring, and the inner diameter of the end of the fastening cylinder is larger, that is, the fastening cylinder is inserted into the fixing ring and squeezes the outer wall of the moving rod.

[0013] Preferably, the inner diameter of the fixing ring is larger than the outer diameter of the moving rod, and the minimum inner diameter of the fastening cylinder does not exceed the outer diameter of the moving rod, and the insertion portion of the end of the fastening cylinder is divided into multiple parts at equal intervals.

[0014] Preferably, a plurality of anti-slip grooves are provided on the outer wall of the limiting ring, and a scale is also provided on the moving rod, and the length of the scale extending in the telescopic hole corresponds to the length of the drill body below the limiting ring.

[0015] Preferably, a buffer block is also installed at the bottom of the limiting ring.

[0016] Compared with the prior art, the beneficial effects of the above technical solution of the utility model are:

[0017] 1. The utility model provides a limiter and scale, so users can accurately set and read the drilling depth as needed, ensuring the accuracy and safety of drilling during surgery;

[0018] 2. The utility model makes it easy and quick to adjust the depth through the design of the movable rod and the telescopic hole, thus improving the operational flexibility during the operation;

[0019] 3. The utility model can effectively prevent the drill bit from over-drilling through the combined use of the limit ring and the locking assembly, thereby protecting the patient's bone tissue and surrounding soft tissue from damage. The coordinated use of the fastening tube and the fixing ring, as well as the design of the locking spring block, ensure the stability and reliability of the drill bit during use, and prevent surgical risks caused by drill bit displacement or loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 The overall structure of the utility model is disassembled as shown in FIG. Figure 1 ;

[0024] Figure 4 The overall structure of the utility model is disassembled as shown in FIG. Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the locking component of the utility model.

[0026] Description of reference numerals:

[0027] 1. Drill bit body; 2. Fixed sleeve; 21. Telescopic hole; 3. Stopper; 31. Limiting ring; 32. Moving rod; 33. Spring; 34. Anti-slip groove; 35. Scale; 36. Buffer block; 4. Locking assembly; 41. Fixed box; 42. Pressing block; 43. Fastening cylinder; 44. Fixed ring; 45. Receiving groove; 46. Compression spring; 47. Positioning hole; 48. Locking spring. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] The utility model provides Figure 1-5 The orthopedic drill bit with controllable drilling depth shown includes a fixed sleeve 2 for fixing the drill bit body 1, and a limiter 3 and a locking assembly 4 are installed at the bottom of the fixed sleeve 2;

[0030] Specifically, a plurality of telescopic holes 21 are provided at the bottom of the fixed sleeve 2;

[0031] Specifically, the limiter 3 includes a limit ring 31, a plurality of movable rods 32 are installed on the top of the limit ring 31, and a spring 33 is installed at the end of the plurality of movable rods 32. The plurality of movable rods 32 and the spring 33 are all installed in the telescopic hole 21;

[0032] Specifically, the locking assembly 4 is fixed at the bottom of the fixed sleeve 2 and is located outside the multiple telescopic holes 21. The locking assembly 4 includes a fixed box 41, a pressing block 42 is installed in the fixed box 41, and a fastening tube 43 is connected to one end of the pressing block 42. A matching fixing ring 44 is also provided on the periphery of the telescopic hole 21. The fastening tube 43 is used in conjunction with the fixing ring 44. A receiving groove 45 is provided inside the pressing block 42, and multiple compression springs 46 are installed in the receiving groove 45. The other end of the compression spring 46 is fixed to the top of the fixed box 41, that is, fixed to the bottom of the fixed sleeve 2. Positioning holes 47 are also provided on both sides of the fixed box 41, and locking spring blocks 48 are also provided on both sides of the pressing block 42 corresponding to the positioning holes 47.

[0033] In this embodiment, the fixed sleeve 2 is an external protection device and support structure for the drill body 1. A telescopic hole is provided at the bottom thereof. The limiter 3 includes a limiting ring 31, and a plurality of movable rods 32 are installed on the top. Each movable rod is equipped with a spring 33 at the bottom. The movable rods 32 and the spring 33 are both installed in the telescopic hole 21, allowing for vertical telescopic adjustment. The locking assembly 4 includes a fixed box 41 installed on the outside of the bottom of the fixed sleeve 2. The fixed box contains a pressing block 42, which is connected to the top of the fixed box by a compression spring 46. One end of the pressing block 42 is connected to a fastening cylinder 43, which is used in conjunction with a fixed ring 44. The fixed ring is installed on the outside of the movable rod 32.

[0034] Reference Figure 1-5 , multiple moving rods 32 are evenly spaced, the locking assembly 4 is fixed on the outside of each moving rod 32, and the fastening cylinder 43 and the fixing ring 44 are both sleeved on the outside of the moving rod 32. The movement of the pressing block 42 drives the fastening cylinder 43 to move into the fixing ring 44, and the inner diameter of the end of the fastening cylinder 43 is larger, that is, the fastening cylinder 43 is inserted into the fixing ring 44 and squeezes the outer wall of the moving rod 32.

[0035] Specifically, the inner diameter of the fixing ring 44 is larger than the outer diameter of the moving rod 32 , and the minimum inner diameter of the fastening cylinder 43 does not exceed the outer diameter of the moving rod 32 . The insertion portion of the end of the fastening cylinder 43 is divided into multiple parts at equal intervals.

[0036] Specifically, a plurality of anti-slip grooves 34 are provided on the outer wall of the limiting ring 31 , and a scale 35 is also provided on the moving rod 32 . The length of the scale 35 extending in the telescopic hole 21 corresponds to the length of the drill body 1 below the limiting ring 31 .

[0037] Specifically, a buffer block 3 is also installed at the bottom of the limiting ring 31.

[0038] In this embodiment, the desired drilling depth is set by adjusting the extension length of the mobile rod 32 in the telescopic hole 21. The scale 35 on the mobile rod helps the user to accurately read and set the drilling depth. The pressing block 42 is used to push the fastening cylinder 43 so that it is inserted into or squeezed on the mobile rod 32 to lock the set depth. The user adjusts the mobile rod 32 to set the drilling depth according to the surgical requirements. By operating the locking assembly 4, the mobile rod 32 is ensured to be stable during the operation to prevent the depth from changing. The anti-slip groove 34 of the limit ring 31 and the buffer block 3 at the bottom provide additional operational stability and safety.

[0039] In this embodiment, the scale 35 and adjustable travel rod 32 allow the surgeon to precisely control the drilling depth. The design of the stopper 3 and locking assembly 4 ensures stable drilling depth throughout the procedure, reducing the risk of over-drilling. The user can quickly adjust the depth and lock it with a simple mechanical operation, improving surgical efficiency. The buffer block 3 at the bottom of the stop ring reduces vibration during operation, improving surgical comfort. This drill bit design is suitable for orthopedic surgeries of varying types and complexities, offering a wide range of potential applications.

[0040] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An orthopedic drill bit with controllable drilling depth, characterized by: It comprises a fixed sleeve (2) for fixing the drill body (1), and a limiter (3) and a locking assembly (4) are installed at the bottom of the fixed sleeve (2); The bottom of the fixed sleeve (2) is provided with a plurality of telescopic holes (21); The limiter (3) includes a limit ring (31), a plurality of moving rods (32) are installed on the top of the limit ring (31), and springs (33) are also installed at the ends of the plurality of moving rods (32), and the plurality of moving rods (32) and the springs (33) are all installed in the telescopic hole (21); The locking assembly (4) is fixed to the bottom of the fixed sleeve (2) and is located outside the plurality of telescopic holes (21). The locking assembly (4) includes a fixed box (41). A pressing block (42) is installed in the fixed box (41). One end of the pressing block (42) is connected to a fastening tube (43). A matching fixing ring (44) is also provided on the periphery of the telescopic hole (21). The fastening tube (43) is used in conjunction with the fixing ring (44). A receiving groove (45) is provided inside the pressing block (42). A plurality of compression springs (46) are installed in the receiving groove (45). The other end of the compression spring (46) is fixed to the top of the fixed box (41), that is, fixed to the bottom of the fixed sleeve (2). Positioning holes (47) are also provided on both sides of the fixed box (41). Locking springs (48) are also provided on both sides of the pressing block (42) corresponding to the positioning holes (47).

2. The orthopedic drill bit with controllable drilling depth according to claim 1, characterized in that: The plurality of moving rods (32) are evenly spaced, the locking assembly (4) is fixed on the outside of each moving rod (32), and the fastening cylinder (43) and the fixing ring (44) are both sleeved on the outside of the moving rod (32). The movement of the pressing block (42) drives the fastening cylinder (43) to move into the fixing ring (44), and the inner diameter of the end of the fastening cylinder (43) is larger, that is, the fastening cylinder (43) is inserted into the fixing ring (44) and squeezes the outer wall of the moving rod (32).

3. The orthopedic drill bit with controllable drilling depth according to claim 2, characterized in that: The inner diameter of the fixing ring (44) is larger than the outer diameter of the moving rod (32), and the minimum inner diameter of the fastening cylinder (43) does not exceed the outer diameter of the moving rod (32). The end insertion portion of the fastening cylinder (43) is divided into multiple parts at equal distances.

4. The orthopedic drill bit with controllable drilling depth according to claim 1, characterized in that: The outer wall of the limiting ring (31) is provided with a plurality of anti-slip grooves (34), and the movable rod (32) is also provided with a scale (35), and the length of the scale (35) extending in the telescopic hole (21) corresponds to the length of the drill body (1) below the limiting ring (31).

5. The orthopedic drill bit with controllable drilling depth according to claim 4, characterized in that: A buffer block (36) is also installed at the bottom of the limiting ring (31).

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