Orthopedic drill bit with positioning structure and using method thereof

Abstract

The invention discloses an orthopedic drill bit with a positioning structure and a using method thereof. The orthopedic drill bit comprises a drill bit body, and a connecting rod is arranged on the drill bit body; the outer wall of the connecting rod is sleeved with an adjusting sleeve, a positioning sleeve is arranged on the outer wall of the adjusting sleeve, the positioning sleeve is rotationally arranged on the outer wall of the adjusting sleeve, an adjusting rod is arranged on the adjusting sleeve, an adjusting hole is formed in the connecting rod, and the adjusting rod is arranged in the adjusting hole, so that the adjusting sleeve moves in the axial direction of the connecting rod. The positioning sleeve is driven to adjust the position; the drill bit has the beneficial effects that through axial displacement fit of the adjusting sleeve and the connecting rod and transmission fit of the adjusting rod and the adjusting hole, accurate position adjustment of the positioning sleeve relative to the head of the drill bit body is achieved, the positioning sleeve can be fixed to the preset drilling depth position through the structure, and manual observation is conducted when the positioning sleeve makes contact with a drilling area; after the positioning sleeve is in contact with a drilling area, a stop signal is sent out, and the drilling depth can be effectively positioned and controlled.

Description

Technical Field

[0001] The present invention relates to an orthopedic drill bit with a positioning structure and a using method thereof. Background Art

[0002] In orthopedic surgery, the drilling operation is a key link in steps such as bone plate fixation and screw implantation. The accuracy of depth control is directly related to the surgical effect and the patient's postoperative recovery. Traditional orthopedic drill bits usually rely on the doctor's operating experience to manually control the drilling depth, and no positioning structure is provided to limit the drilling depth. As a result, there is a risk of over-drilling or under-drilling caused by manual feeling errors or visual judgment deviations, which is likely to cause complications such as bone tissue damage and screw fixation failure. In view of this, the present invention proposes an orthopedic drill bit with a positioning structure and a using method thereof to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide an orthopedic drill bit with a positioning structure and a using method thereof to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An orthopedic drill bit with a positioning structure includes a drill bit body, and a connecting rod is arranged on the drill bit body; An adjusting sleeve is sleeved on the outer wall of the connecting rod, a positioning sleeve is arranged on the outer wall of the adjusting sleeve, the positioning sleeve is rotatably arranged on the outer wall of the adjusting sleeve, an adjusting rod is arranged on the adjusting sleeve, and an adjusting hole is arranged on the connecting rod. The adjusting rod is arranged in the adjusting hole so that the adjusting sleeve displaces along the axial direction of the connecting rod, driving the positioning sleeve to adjust its position.

[0005] As an improvement of the above technical solution, the adjusting sleeve is provided with a first cavity and a second cavity, and the cross-section of the first cavity is an equilateral hexagon; The connecting rod is provided with a first outer wall and a second outer wall, the cross-section of the first outer wall is an equilateral hexagon, the first outer wall is adapted to the first cavity, and the second outer wall is adapted to the second cavity.

[0006] As an improvement of the above technical solution, the adjusting rod is provided with a threaded outer wall, and the threaded outer wall is threadedly connected to the adjusting hole; The adjusting rod is further provided with a rotating ring, and the adjusting sleeve is provided with a rotating ring groove, and the rotating ring is rotatably arranged in the rotating ring groove.

[0007] As an improvement of the above technical solution, the outer wall of the adjusting sleeve is provided with a first limiting ring and a second limiting ring; The positioning sleeve is provided with a contact disk, an annular limiting groove is arranged in the contact disk, the second limiting ring is arranged in the annular limiting groove, and the positioning sleeve is arranged between the first limiting ring and the second limiting ring.

[0008] As an improvement of the above technical solution, a limited plane is provided on the adjustment sleeve, and two groups of elastic limit plates are symmetrically arranged on the limited plane; A clamping plate is arranged on the limited plane, an adjustment through groove is formed in the clamping plate, and the adjustment rod is rotatably arranged in the adjustment through groove.

[0009] As an improvement of the above technical solution, a contact rod is arranged on the adjustment rod, and multiple groups of contact teeth are evenly arranged on the outer wall of the contact rod; Multiple groups of limit teeth are evenly arranged on the surface of the elastic limit plate, the limit teeth are adapted to the contact teeth, and the limit teeth are in contact with the contact teeth, so that the adjustment rod does not rotate in the adjustment hole.

[0010] As an improvement of the above technical solution, the length of the long side of the elastic limit plate is less than the length of the contact rod, and the two groups of elastic limit plates are symmetrically arranged on both sides of the adjustment through groove; The contact disc is made of rubber material.

[0011] A using method of an orthopedic drill bit with a positioning structure includes the following steps: S1. Alignment and installation: Align the adjustment sleeve with the connecting rod, and sequentially send the connecting rod into the second cavity and the first cavity until the adjustment rod is placed in the adjustment hole; S2. Rotational connection: Drive the contact rod to rotate through the adjustment through groove, so that the adjustment rod rotates in the adjustment hole, and the thread on the outer wall of the thread is threadedly connected in the adjustment hole; S3. Adjustment and testing: Continuously rotate the contact rod in S2. If the adjustment sleeve cannot smoothly displace along the axial direction of the connecting rod, replace the adjustment sleeve and repeat S1 and S2 until in this step, the adjustment sleeve can smoothly displace along the axial direction of the connecting rod; S4. Adjustment: According to the actual drilling depth, displace the adjustment sleeve until the distance between the contact disc and the head of the drill bit body is the same as the actual drilling depth; S5. Positioning: After the adjustment in S4 is completed, place the clamping plate at the drill chuck of the orthopedic electric drill, and through the cooperation of the drill chuck and the clamping plate, connect the drill bit body to the orthopedic electric drill.

[0012] As an improvement of the above technical solution, in S5, when the clamping plate is placed at the drill chuck of the orthopedic electric drill, the drill chuck simultaneously clamps the elastic limit plate, so that the elastic limit plate is in contact with the surface of the contact rod to limit the contact rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are: By adjusting the axial displacement fit between the sleeve and the connecting rod, and the transmission fit between the rod and the adjusting hole, precise position adjustment of the positioning sleeve relative to the head of the drill bit body is achieved. This structure can fix the positioning sleeve to the preset drilling depth position. When the positioning sleeve contacts the drilling area, manual observation is carried out. After the positioning sleeve contacts the drilling area, a stop signal is sent, which can effectively control the positioning of the drilling depth and effectively avoid the risk of over-drilling caused by human operation errors during the traditional drilling process, significantly improving the accuracy and safety of bone tissue surgery. Through the cooperation between the adjusting sleeve, the connecting rod, and the adjusting rod, it is convenient for overall module processing. When a single part is damaged, it is convenient to replace and maintain it in a timely manner. Moreover, since the adjusting sleeve is slidably arranged on the connecting rod, it can allow for the rapid disassembly and assembly requirements of drill bit bodies of different specifications, expanding the clinical application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is the present invention Figure 1 an enlarged structural diagram of part A in; Figure 3 is a side view of the present invention; Figure 4 is the present invention Figure 3 a cross-sectional view taken along B-B in; Figure 5 is the present invention Figure 4 an enlarged structural diagram of part C in; Figure 6 is the present invention Figure 4 an enlarged structural diagram of part D in; Figure 7 is a schematic structural diagram of the drill bit body of the present invention; Figure 8 is a side view of the adjusting sleeve of the present invention; Figure 9 is the present invention Figure 8 a cross-sectional view taken along E-E in; Figure 10 is the present invention Figure 9 an enlarged structural diagram of part F in; Figure 11 is a schematic structural diagram of the positioning sleeve of the present invention; Figure 12 is a schematic structural diagram of the adjusting rod of the present invention; Figure 13 is the present invention Figure 12 an enlarged structural diagram of part G in; Figure 14 is a schematic structural diagram of the elastic limiting plate of the present invention.

[0015] In the figure: 10, drill bit body; 11, connecting rod; 111, first outer wall; 112, second outer wall; 113, adjustment hole; 20, positioning sleeve; 21, annular limiting groove; 22, contact disc; 30, adjustment sleeve; 31, limiting surface; 32, first limiting ring; 33, second limiting ring; 34, rotating ring groove; 35, first cavity; 36, second cavity; 40, elastic limiting plate; 41, limiting teeth; 50, clamping plate; 51, adjustment through groove; 60, adjustment rod; 61, rotating ring; 62, threaded outer wall; 63, contact teeth; 64, contact rod. Specific implementation mode

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] Embodiment: As Figure 1-14 shown, this embodiment proposes an orthopedic drill bit with a positioning structure, including a drill bit body 10, and a connecting rod 11 is arranged on the drill bit body 10; An adjustment sleeve 30 is sleeved on the outer wall of the connecting rod 11, a positioning sleeve 20 is arranged on the outer wall of the adjustment sleeve 30, the positioning sleeve 20 is rotatably arranged on the outer wall of the adjustment sleeve 30, an adjustment rod 60 is arranged on the adjustment sleeve 30, and an adjustment hole 113 is arranged on the connecting rod 11. The adjustment rod 60 is arranged in the adjustment hole 113, so that the adjustment sleeve 30 displaces along the axial direction of the connecting rod 11, driving the positioning sleeve 20 to adjust its position.

[0018] In this embodiment, when the drill bit body 10 is in use, the adjustment sleeve 30 is sleeved on the outer wall of the connecting rod 11, and then through the cooperation between the adjustment rod 60 and the adjustment hole 113, the adjustment sleeve 30 displaces along the axial direction of the connecting rod 11, thereby driving the positioning sleeve 20 to adjust its position until the distance between the positioning sleeve 20 and the head of the drill bit body 10 is the actual drilling depth. Then, the drill bit body 10 is connected to the drill chuck of the orthopedic drill bit, and at the same time, drilling is carried out. After the positioning sleeve 20 contacts the drilling area, the orthopedic drill bit stops working; By adjusting the axial displacement cooperation between the adjusting sleeve 30 and the connecting rod 11, and adjusting the transmission cooperation between the adjusting rod 60 and the adjusting hole 113, the precise position adjustment of the positioning sleeve 20 relative to the head of the drill bit body 10 is achieved. This structure can fix the positioning sleeve 20 to the preset drilling depth position. When the positioning sleeve 20 contacts the drilling area, manual observation is carried out. After the positioning sleeve 20 contacts the drilling area, a stop signal is sent, which can effectively position and control the drilling depth, effectively avoiding the risk of over-drilling caused by human operation errors during the traditional drilling process, and significantly improving the precision and safety of bone tissue surgery; Through the cooperation between the adjusting sleeve 30, the connecting rod 11, and the adjusting rod 60, it is convenient for overall module processing. When a single part is damaged, it is convenient to replace and maintain it in a timely manner. Moreover, since the adjusting sleeve 30 is slidably arranged on the connecting rod 11, it can allow for the quick disassembly and assembly requirements of different specifications of drill bit bodies 10, expanding the clinical application scenarios.

[0019] Specifically, the adjusting sleeve 30 is provided with a first cavity 35 and a second cavity 36, and the cross-section of the first cavity 35 is an equilateral hexagon; The connecting rod 11 is provided with a first outer wall 111 and a second outer wall 112. The cross-section of the first outer wall 111 is an equilateral hexagon. The first outer wall 111 is adapted to the first cavity 35, and the second outer wall 112 is adapted to the second cavity 36.

[0020] In this embodiment, through the cooperation of the hexagonal cross-sections of the first cavity 35 and the first outer wall 111, a non-circular contact surface is formed, effectively preventing relative rotation between the adjusting sleeve 30 and the connecting rod 11, ensuring stable torque transmission during the adjustment process, and avoiding positioning errors caused by rotational deviation; moreover, the adaptation between the second cavity 36 and the second outer wall 112 provides an accurate guide for the axial displacement of the adjusting sleeve 30 along the connecting rod 11, restricting radial offset, ensuring the linear accuracy of the position adjustment of the positioning sleeve 20, thereby improving the reliability of drilling depth control; at the same time, through the structural design of the split cavity and outer wall, the assembly process of the adjusting sleeve 30 and the connecting rod 11 is simplified, and at the same time, quick disassembly and replacement are allowed, improving the maintainability and service life of the overall device.

[0021] Specifically, the adjusting rod 60 is provided with a threaded outer wall 62, and the threaded outer wall 62 is threadedly connected to the adjusting hole 113; The adjusting rod 60 is further provided with a rotating ring 61, and the adjusting sleeve 30 is provided with a rotating ring groove 34, and the rotating ring 61 is rotatably arranged in the rotating ring groove 34.

[0022] In this embodiment, through the threaded cooperation between the threaded outer wall 62 and the adjusting hole 113, it is convenient for the adjusting sleeve 30 to displace axially along the connecting rod 11.

[0023] Specifically, a first limiting ring 32 and a second limiting ring 33 are provided on the outer wall of the adjusting sleeve 30; The positioning sleeve 20 is provided with a contact disk 22, an annular limiting groove 21 is arranged inside the contact disk 22, the second limiting ring 33 is arranged in the annular limiting groove 21, and the positioning sleeve 20 is arranged between the first limiting ring 32 and the second limiting ring 33.

[0024] In this embodiment, the second limiting ring 33 is embedded in the annular limiting groove 21 to form an axial constraint, preventing the positioning sleeve 20 from axially moving along the adjusting sleeve 30, while retaining the rotational freedom of the positioning sleeve 20 around the outer wall of the adjusting sleeve 30, avoiding interference with the normal rotation of the drill bit body 10 due to jamming of the positioning sleeve 20 during the drilling process.

[0025] Specifically, a limiting surface 31 is provided on the adjusting sleeve 30, and two groups of elastic limiting plates 40 are symmetrically arranged on the limiting surface 31; A clamping plate 50 is arranged on the limiting surface 31, an adjusting through groove 51 is formed in the clamping plate 50, and the adjusting rod 60 is rotatably arranged in the adjusting through groove 51.

[0026] In this embodiment, the provided clamping plate 50 facilitates the restriction of the adjusting rod 60, avoiding the rotation of the adjusting rod 60 and affecting the accuracy of the positioning sleeve 20.

[0027] Specifically, the adjusting rod 60 is provided with a contact rod 64, and a plurality of groups of contact teeth 63 are evenly arranged on the outer wall of the contact rod 64; A plurality of groups of limiting teeth 41 are evenly arranged on the surface of the elastic limiting plate 40, the limiting teeth 41 are adapted to the contact teeth 63, and the limiting teeth 41 are in contact with the contact teeth 63, so that the adjusting rod 60 does not rotate in the adjusting hole 113.

[0028] In this embodiment, when the adjusting rod 60 does not need to rotate, the elastic limiting plate 40 is clamped to displace the limiting teeth 41 towards the contact rod 64 until the limiting teeth 41 are in contact with the contact teeth 63, thereby restricting the rotation of the contact rod 64 and avoiding the rotation of the adjusting rod 60.

[0029] Specifically, the length of the long side of the elastic limiting plate 40 is less than the length of the contact rod 64, and the two groups of elastic limiting plates 40 are symmetrically arranged on both sides of the adjusting through groove 51; The contact disk 22 is made of rubber material.

[0030] In this embodiment, since the length of the long side of the elastic limiting plate 40 is less than the length of the contact rod 64, when it is necessary to drive the adjusting rod 60 to rotate, a person can contact the contact rod 64 through the adjusting through groove 51, so as to drive the contact rod 64 to rotate. Then, when the drill bit body 10 is connected to an orthopedic electric drill, the clamping plate 50 is connected to the drill chuck of the orthopedic electric drill, and the elastic limiting plate 40 is clamped by the drill chuck, so that the elastic limiting plate 40 contacts the contact rod 64 for limitation.

[0031] A method for using an orthopedic drill bit with a positioning structure includes the following steps: S1. Alignment and installation: Align the adjusting sleeve 30 with the connecting rod 11, and sequentially send the connecting rod 11 into the second cavity 36 and the first cavity 35 until the adjusting rod 60 is placed in the adjusting hole 113. S2. Rotational connection: Drive the contact rod 64 to rotate through the adjusting through groove 51, so that the adjusting rod 60 rotates in the adjusting hole 113, and the outer thread wall 62 is threadedly connected in the adjusting hole 113. S3. Adjustment and testing: Continuously rotate the contact rod 64 in S2. If the adjusting sleeve 30 cannot smoothly displace along the axial direction of the connecting rod 11, replace the adjusting sleeve 30 and repeat S1 and S2 until, in this step, the adjusting sleeve 30 can smoothly displace along the axial direction of the connecting rod 11. S4. Adjustment: According to the actual drilling depth, displace the adjusting sleeve 30 until the distance between the contact disc 22 and the head of the drill bit body 10 is the same as the actual drilling depth. S5. Positioning: After the adjustment in S4 is completed, place the clamping plate 50 at the drill chuck of the orthopedic electric drill, and through the cooperation of the drill chuck and the clamping plate 50, connect the drill bit body 10 to the orthopedic electric drill.

[0032] In this embodiment, by adjusting the geometric adaptation between the first cavity 35 of the hexagonal cross-section of the adjusting sleeve 30 and the first outer wall 111 of the connecting rod 11, non-rotating axial guidance and precise torque transmission are achieved, ensuring the stable displacement of the adjusting sleeve 30 along the connecting rod 11. At the same time, the first limiting ring 32, the second limiting ring 33 and the annular limiting groove 21 of the positioning sleeve 20 are nested and matched to form an axial two-way constraint and rotation freedom separation structure, which not only prevents the accidental detachment of the positioning sleeve 20, but also avoids the positioning deviation caused by friction during the drilling process. Combining the cooperation between the adjusting rod 60 and the adjusting hole 113, the integrated fixation of the clamping plate 50 and the drill chuck, and the pre-assembly verification process in the usage method, stepless precise adjustment of the drilling depth, modular rapid disassembly and assembly, and intraoperative operation stability are achieved. The overall structure solves the technical problems of complex adjustment of traditional orthopedic drills, easy loosening of positioning, and poor adaptability through the collaborative design of geometric limiting, thread fine-tuning and hierarchical guidance, significantly improving the drilling depth control accuracy, operation efficiency and surgical safety, while reducing the maintenance cost.

[0033] Specifically, in S5, when the clamping plate 50 is placed at the drill chuck of the orthopedic electric drill, the drill chuck simultaneously clamps the elastic limiting plate 40, so that the elastic limiting plate 40 contacts the surface of the contact rod 64 to restrict the contact rod 64.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthopedic drill bit with a positioning structure, characterized in that: It comprises a drill body (10), wherein a connecting rod (11) is provided on the drill body (10); The outer wall of the connecting rod (11) is provided with an adjustment sleeve (30), the outer wall of the adjustment sleeve (30) is provided with a positioning sleeve (20), the positioning sleeve (20) is rotatably arranged on the outer wall of the adjustment sleeve (30), the adjustment sleeve (30) is provided with an adjustment rod (60), the connecting rod (11) is provided with an adjustment hole (113), and the adjustment rod (60) is arranged in the adjustment hole (113), so that the adjustment sleeve (30) is displaced axially along the connecting rod (11), thereby driving the positioning sleeve (20) to adjust its position.

2. The orthopedic drill bit with a positioning structure according to claim 1, characterized in that: The adjustment sleeve (30) is provided with a first cavity (35) and a second cavity (36); the first cavity (35) has a cross-section in the form of an equihexagon; The connecting rod (11) is provided with a first outer wall (111) and a second outer wall (112); the first outer wall (111) has an equihexagonal cross section; the first outer wall (111) is adapted to the first cavity (35); and the second outer wall (112) is adapted to the second cavity (36).

3. The orthopedic drill bit with a positioning structure according to claim 1, characterized in that: The adjusting rod (60) is provided with a threaded outer wall (62), and the threaded outer wall (62) is threadedly connected to the adjusting hole (113); The adjusting rod (60) is further provided with a rotating ring (61), the adjusting sleeve (30) is provided with a rotating ring groove (34), and the rotating ring (61) is rotatably arranged in the rotating ring groove (34).

4. The orthopedic drill bit with a positioning structure according to claim 1, characterized in that: The outer wall of the adjustment sleeve (30) is provided with a first limiting ring (32) and a second limiting ring (33); The positioning sleeve (20) is provided with a contact plate (22), an annular limiting groove (21) is provided in the contact plate (22), the second limiting ring (33) is arranged in the annular limiting groove (21), and the positioning sleeve (20) is arranged between the first limiting ring (32) and the second limiting ring (33).

5. The orthopedic drill bit with a positioning structure according to claim 4, characterized in that: A limiting surface (31) is provided on the adjustment sleeve (30), and two groups of elastic limiting plates (40) are symmetrically provided on the limiting surface (31); A clamping plate (50) is provided on the limiting surface (31), the clamping plate (50) is provided with an adjustment slot (51), and the adjustment rod (60) is rotatably disposed in the adjustment slot (51).

6. The orthopedic drill bit with a positioning structure according to claim 5, characterized in that: The adjusting rod (60) is provided with a contact rod (64), and the outer wall of the contact rod (64) is evenly provided with a plurality of groups of contact teeth (63); A plurality of groups of limiting teeth (41) are evenly arranged on the surface of the elastic limiting plate (40), the limiting teeth (41) are matched with the contact teeth (63), and the limiting teeth (41) are in contact with the contact teeth (63), so that the adjustment rod (60) does not rotate in the adjustment hole (113).

7. The orthopedic drill bit with a positioning structure according to claim 6, characterized in that: The length of the long side of the elastic limiting plate (40) is less than the length of the contact rod (64), and the two groups of the elastic limiting plates (40) are symmetrically arranged on both sides of the adjustment slot (51); The contact disc (22) is made of rubber material.

8. A method for using an orthopedic drill bit with a positioning structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Alignment installation: Aligning the adjustment sleeve (30) with the connecting rod (11), and inserting the connecting rod (11) into the second cavity (36) and the first cavity (35) in sequence until the adjustment rod (60) is placed in the adjustment hole (113); S2, Rotary connection: The contact rod (64) is driven to rotate by adjusting the through slot (51), so that the adjusting rod (60) rotates in the adjusting hole (113), so that the threaded outer wall (62) is threadedly connected in the adjusting hole (113); S3, adjustment test: Continue to rotate the contact rod (64) in step S2. If the adjustment sleeve (30) cannot be smoothly displaced along the axial direction of the connecting rod (11), replace the adjustment sleeve (30) and repeat steps S1 and S2 until the adjustment sleeve (30) can be smoothly displaced along the axial direction of the connecting rod (11). S4. Adjustment: According to the actual drilling depth, the adjustment sleeve (30) is displaced until the distance between the contact plate (22) and the head of the drill bit body (10) is the same as the actual drilling depth; S5. Positioning: After the adjustment is completed in S4, the clamping plate (50) is placed on the drill chuck of the orthopedic electric drill, and the drill body (10) is connected to the orthopedic electric drill through the cooperation of the drill chuck and the clamping plate (50).

9. The method for using the orthopedic drill bit with a positioning structure according to claim 8, characterized in that: In S5, when the clamping plate (50) is placed on the drill chuck of the orthopedic electric drill, the drill chuck simultaneously clamps the elastic limiting plate (40), so that the elastic limiting plate (40) contacts the surface of the contact rod (64), thereby limiting the contact rod (64).

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