Quick-replaceable osteotome

Abstract

The bone chisel comprises a chisel head and a chisel body, a bending part is arranged at the end of the chisel body, and the chisel head is detachably arranged at the other end of the bending part through a connecting piece. The bone chisel has the effect of reducing the use cost and replacement cost of the bone chisel.

Description

Technical Field

[0001] This application relates to the field of orthopedic tools, and in particular to a quick-change bone chisel. Background Technology

[0002] A bone chisel is a medical instrument primarily used to cut or remove bone tissue. In dental implant surgery, it is mainly used for shaping and reshaping the alveolar bone. Alveolar bone can experience absorption and atrophy. In such cases, the bone chisel can be used to appropriately chisel and reshape the alveolar bone, increasing bone volume or altering its shape to create a suitable implant bed and ensure stable implant placement.

[0003] Chinese patent CN201602907U discloses a bone chisel for installing dental implants, including a chisel handle and a chisel head, which is positioned by a positioning part to reduce damage to surrounding teeth and soft tissues during bone compression.

[0004] Regarding the aforementioned technologies, if the end of the bone chisel is worn or chipped after chiseling, the entire chisel needs to be replaced. For a single bone chisel, its usage time and frequency are relatively low, and the cost of use is correspondingly higher, which has its shortcomings. Utility Model Content

[0005] In order to reduce the cost of using and replacing bone chisels, this application provides a quick-change bone chisel.

[0006] The quick-change bone chisel provided in this application adopts the following technical solution:

[0007] A quick-change bone chisel includes a chisel head and a chisel body. The end of the chisel body is provided with a bent portion, and the other end of the bent portion is detachably connected to the chisel head via a connector.

[0008] By employing the above-mentioned technical solution, during surgery, especially in situations with limited space or complex operating angles, the bending section allows surgeons to more easily adjust the operating angle of the bone chisel. For example, when reshaping alveolar bone inside the mouth, where the oral cavity is confined, the bending section allows the cutting edge of the bone chisel to contact the alveolar bone at a suitable angle. Surgeons can rotate or tilt the bone chisel with the bending section to precisely manipulate the bone portion requiring reshaping, without being overly restricted by the oral anatomy. Furthermore, the detachable chisel head makes chisel head replacement more convenient; only the chisel head needs to be replaced, significantly reducing replacement and usage costs.

[0009] Optionally, the connector includes a plug disposed on the chisel head, one end of the bent portion having a slot, the plug being inserted into the slot and slidingly engaging with the slot, and the plug being fixed to the slot by bolts.

[0010] By adopting the above technical solution, during installation, the plug is inserted into the slot and secured with bolts. Disassembly and replacement are simple: just unscrew the bolts. This method is convenient and quick, avoiding safety hazards caused by loose connections during use.

[0011] Optionally, the end of the chisel head is serrated.

[0012] By adopting the above technical solution, the serrated end of the chisel increases the cutting efficiency of the bone chisel during use, improving the convenience and safety of surgical operations. At the same time, it increases the strength of the chisel during use, preventing chipping and ensuring safety and reliability.

[0013] Optionally, the connector includes a connecting cylinder, one end of which is provided with a threaded section, the end of which is closed, the threaded section of which is threadedly connected to one end of the bent portion, a sliding groove is provided inside the connecting cylinder, the other end of which is connected to a rotating groove, a fixing groove is provided inside the connecting cylinder, which is connected to the rotating groove, a connecting block is provided at the tail of the chisel, the connecting block is inserted into the sliding groove and slides along the sliding groove, and a limiting component is provided on the connecting cylinder to restrict the movement of the connecting block.

[0014] By adopting the above technical solution, the threaded section at one end of the connecting cylinder is threadedly connected to the bent end, enabling quick installation and disassembly of the chisel head and body, improving the convenience and efficiency of surgical operations. The connecting block is inserted into the sliding groove and slides along it. The fixed groove inside the connecting cylinder is connected to the rotating groove, allowing the connecting block to be more stably fixed inside the connecting cylinder. When the connecting block slides into the fixed groove, it effectively prevents the connecting block from loosening or falling off in the rotating groove, thereby improving the connection stability of the entire quick-change bone chisel. This allows the chisel head to be flexibly adjusted in position during use to adapt to different surgical needs.

[0015] Optionally, a spring is provided inside the connecting cylinder on the side opposite to the threaded section, and a connecting plate is provided at the other end of the spring, the connecting plate slidingly engaging with the inner wall of the connecting cylinder.

[0016] By adopting the above technical solution, on the one hand, the spring inside the connecting cylinder can act as a buffer during the connection process, reducing the impact force between the chisel head and the connecting cylinder. Furthermore, during connection, the chisel head applies pressure to the spring, compressing the spring and inserting the chisel head along the sliding groove and into the rotating slot for fixation. When disassembling the chisel head, rotating it in the opposite direction disengages it from the rotating slot, and under the action of the spring force, the chisel head is ejected, facilitating replacement. This ensures the smoothness and reliability of the connection process, further enhancing the safety and ease of use of the bone chisel.

[0017] Optionally, the limiting component includes a limiting rod, with a knob at the outermost end of the limiting rod and a limiting block at the end of the limiting rod near the chisel head. The limiting rod is threaded into the side wall of the connecting cylinder, and the limiting block slides against the upper side wall of the connecting block.

[0018] By adopting the above technical solution, after the chisel head is installed in place, the limiting block moves along the surface of the connecting block by rotating the knob, so that the limiting block contacts the connecting block, preventing the chisel head from moving randomly after being subjected to force.

[0019] Optionally, a limiting spring is sleeved on the limiting rod, and the limiting spring is disposed between the knob and the connecting cylinder.

[0020] By adopting the above technical solution, the limiting rod moves, and the part of the limiting rod exposed on the outside of the connecting cylinder shortens and compresses the limiting spring. Under the action of the limiting spring, the threaded connection between the limiting rod and the connecting cylinder is squeezed, increasing the frictional force of the fit, preventing the limiting rod from rotating, and improving the stability of the structure.

[0021] Optionally, a shock-absorbing pad is fitted at the end of the chisel body.

[0022] By adopting the above technical solutions, the shock-absorbing pad can effectively absorb and disperse the vibrations generated during surgery, reduce the doctor's operating fatigue, improve operating comfort and stability, and at the same time reduce the risk of damage to the patient's surrounding tissues.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By incorporating a plug, slot, and bolt, the installation efficiency of the bone chisel is improved, and the usage cost is reduced. During installation, the plug is inserted into the slot and secured with the bolt. Disassembly is simple: just unscrew the bolt for easy removal and replacement, avoiding safety hazards caused by loose connections during use. The detachable chisel head makes replacement even easier; only the chisel head needs to be replaced, significantly reducing replacement and usage costs.

[0025] 2. By incorporating a connecting cylinder, sliding groove, rotating groove, fixing groove, connecting block, and limiting component, the chisel head and chisel body can be quickly installed and disassembled, improving the convenience and efficiency of surgical operations. During connection, the chisel head applies pressure to the spring, which compresses, causing the chisel head to slide along the sliding groove and then into the rotating groove for fixation. When disassembling the chisel head, rotating it disengages it from the rotating groove, and the spring force ejects the chisel head for easy replacement. This ensures a smooth and reliable connection process, further enhancing the safety and ease of use of the bone chisel. The limiting component prevents the connecting block from loosening during use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0027] Figure 2 This is a schematic diagram of the connection relationship in Embodiment 1 of this application.

[0028] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0029] Figure 4 This is a cross-sectional view of the connection relationship between the connecting cylinder and the chisel head in Embodiment 2 of this application.

[0030] Figure 5 This is a schematic diagram of the sliding groove, rotating groove and fixed groove in the connecting cylinder of Embodiment 2 of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Chisel body; 2. Bending section; 3. Chisel head; 4. Plug; 5. Slot; 6. Bolt; 7. Shock absorber; 8. Connecting cylinder; 9. Threaded section; 10. Slide groove; 11. Rotating groove; 12. Connecting block; 13. Spring; 14. Connecting plate; 15. Limiting rod; 16. Knob; 17. Fixing groove; 18. Limiting block; 19. Limiting spring. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a quick-change bone chisel.

[0034] Example 1

[0035] Reference Figure 1 A quick-change bone chisel includes a chisel head 3 and a chisel body 1. To make it easier for doctors to adjust the operating angle of the bone chisel, the chisel body 1 is also equipped with a bending part 2, which is fixedly connected to the chisel body 1. The tail of the chisel head 3 is detachably connected to the bending part via a connector. In addition, to improve the strength of the chisel head 3 during use and prevent chipping, the end of the chisel head 3 is serrated, and the end of the chisel body 1 is fitted with a shock-absorbing pad 7.

[0036] Reference Figure 1 and Figure 2 The connector includes a plug 4, which is fixedly installed at one end of the chisel head 3 near the bending part. A slot 5 is also provided on the bending part 2 relative to the plug 4. The plug 4 is inserted into the slot 5 and slides in the slot 5. The plug 4 and the slot 5 are fixed by bolts 6.

[0037] The implementation principle of the mobile tunnel maintenance platform in this application embodiment is as follows: The detachable structure of the bend 2 of the chisel body 1 and the chisel head 3 reduces the usage and replacement costs of the chisel. Fixed installation is achieved simply by inserting the plug 4 of the chisel head 3 into the slot 5 and securing it with bolts 6. Disassembly only requires removing the bolts 6 and replacing the chisel head 3, thereby significantly reducing replacement and usage costs.

[0038] Example 2,

[0039] Reference Figure 3 , Figure 4 and Figure 5 The connector includes a connecting cylinder 8, which has openings at both ends. One end of the connecting cylinder 8 has a threaded section 9, and the other end of the threaded section 9 is closed to limit the stroke of the bending part 2. The threaded section 9 of the connecting cylinder 8 is threadedly connected to one end of the bending part 2. A sliding groove 10 is provided on the side of the connecting cylinder 8 near the chisel head 3. The other end of the sliding groove 10 is connected to a rotating groove 11. A fixing groove 17 is provided inside the connecting cylinder 8 and is connected to the rotating groove 11. A connecting block 12 is provided at the tail of the chisel head 3. The connecting block 12 is inserted into the sliding groove 10 and slides along the sliding groove 10. In order to prevent the connecting block 12 from loosening or falling off in the rotating groove 11, the rotating groove 11 is set along the circumference of the connecting cylinder 8 so that the connecting block 12 slides into the fixing groove 17, thereby improving the connection stability of the entire quick-change bone chisel.

[0040] Reference Figure 3 , Figure 4 and Figure 5 To prevent the connecting block 12 from loosening during use, a limiting component is provided to prevent the connecting block 12 from moving. The limiting component includes a limiting rod 15, which is threaded into the side wall of the connecting cylinder 8. A knob 16 is provided on the outermost side of the limiting rod 15 away from the connecting cylinder 8. Grooves are provided on both the inner and outer sides of the mating area between the connecting cylinder 8 and the limiting rod 15. A limiting spring 19 is provided in the outer groove, which is sleeved on the limiting rod 15. The other end of the limiting spring 19 abuts against the knob 16 near the side of the connecting cylinder 8. A limiting block 18 is provided at the end of the limiting rod 15 near the chisel head 3, and the limiting block 18 slides against the upper side wall of the connecting block 12.

[0041] The implementation principle of Example 2 is as follows: When the bone chisel is to be replaced after use, it is not necessary to replace the entire bone chisel. The use cost of the bone chisel is reduced by the design of the detachable connecting cylinder 8.

[0042] Specifically, a connecting cylinder 8 is designed to connect the bent part 2 of the chisel body 1 and the chisel head 3. The connecting cylinder 8 and the bent part 2 of the chisel body 1 are connected by threads, making disassembly and installation relatively simple. The operator inserts the chisel head 3 into one end of the connecting cylinder 8, causing the two connecting blocks 12 to insert into the sliding groove 10, and compresses the spring 13. The spring 13 contracts inward. After insertion to a certain depth, the operator rotates the chisel head 3, sliding the connecting blocks 12 along the rotating groove 11 for fixation. The operator then releases the chisel head 3, and under the elastic force of the spring 13, the chisel head 3 is pushed into the fixing groove 17 to complete the installation. For disassembly, the operator pushes the chisel head 3 and rotates it in the opposite direction. After disassembling from the rotating groove 11, the chisel head 3 is ejected under the elastic force of the spring 13, facilitating replacement and ensuring the smoothness and reliability of the connection process.

[0043] At this time, the limiting block 18 on the limiting assembly is located in the groove on the side wall of the connecting cylinder 8. Then, the limiting rod 15 is rotated, and the limiting block 18 slides along the top of the connecting block 12 and abuts against the connecting block 12 to prevent it from moving under force. Under the action of the limiting spring 19, the stability of the limiting rod 15 is improved, further enhancing the safety and ease of use of the bone chisel.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-change bone chisel, comprising a chisel head (3) and a chisel body (1), characterized in that, The end of the chisel body (1) is provided with a bent part (2), and the other end of the bent part (2) is detachably provided with the chisel head (3) through a connector. The connector includes a connecting cylinder (8), one end of the connecting cylinder (8) is provided with a threaded section (9), the end of the threaded section (9) is closed, the threaded section (9) of the connecting cylinder (8) is threadedly connected to one end of the bent part (2), a sliding groove (10) is provided in the connecting cylinder (8), the other end of the sliding groove (10) is connected to a rotating groove (11), a fixing groove (17) is provided in the connecting cylinder (8), the fixing groove (17) is connected to the rotating groove (11), a connecting block (12) is provided at the tail of the chisel head (3), the connecting block (12) is inserted into the sliding groove (10) and slides along the sliding groove (10), and a limiting component is provided on the connecting cylinder (8) to restrict the movement of the connecting block (12).

2. The quick-change bone chisel according to claim 1, characterized in that, The connector includes a plug (4) which is disposed on the chisel head (3). One end of the bent part (2) is provided with a slot (5). The plug (4) is inserted into the slot (5) and slides in cooperation with the slot (5). The plug (4) and the slot (5) are fixed by bolts (6).

3. The quick-change bone chisel according to claim 1, characterized in that, The end of the chisel (3) is serrated.

4. A quick-change bone chisel according to claim 1, characterized in that, A spring (13) is provided on one side of the connecting cylinder (8) opposite to the threaded section (9), and a connecting plate (14) is provided on the other end of the spring (13). The connecting plate (14) slides in cooperation with the inner wall of the connecting cylinder (8).

5. A quick-change bone chisel according to claim 1, characterized in that, The limiting component includes a limiting rod (15), with a knob (16) at the outermost end of the limiting rod (15) and a limiting block (18) at the end of the limiting rod (15) near the chisel (3). The limiting rod (15) is threadedly engaged with the side wall of the connecting cylinder (8), and the limiting block (18) slides against the upper side wall of the connecting block (12).

6. A quick-change bone chisel according to claim 5, characterized in that, A limiting spring (19) is sleeved on the limiting rod (15), and the limiting spring (19) is located between the knob (16) and the connecting cylinder (8).

7. A quick-change bone chisel according to claim 1, characterized in that, The end of the chisel body (1) is fitted with a shock-absorbing pad (7).

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