Quick-change bone knife with locking mechanism

Abstract

The utility model discloses a quick-change osteotome with a locking mechanism, which comprises a grip, one side of the grip is movably connected with an osteotome body, the inner wall of the grip is provided with a connecting groove, one side of the osteotome body is fixedly connected with a connecting block, one side of the connecting block is fixedly connected with a mounting block, and the mounting block is fixedly connected with the locking mechanism. A fixing shaft is fixedly connected to one side of the grip, and a vortex spring is fixedly connected to the outer wall of the fixing shaft. According to the quick-change osteotome with the locking mechanism, through the arrangement of the grip, the osteotome body, the connecting groove, the connecting block, the mounting block, a fixing shaft, a vortex spring, a positioning block and a through groove, the function of conveniently mounting and dismounting the osteotome body is achieved, then the osteotome body can be quickly replaced, the convenience of operation is improved, and the practicability of the osteotome is improved. And meanwhile, the firmness of the bone knife body after installation is improved, the situation that the bone knife body falls off after installation is avoided, and then the stability during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a quick-change osteotome with a locking mechanism. Background Art

[0002] With the continuous development of society, technology in the medical field is also constantly improving, resulting in more and more types of medical devices, including osteotomies, which are medical devices used for orthopedic surgical treatment.

[0003] For example, a bone knife disclosed in Chinese patent number: CN209678620U includes a handle, an upper knife rod, a lower knife rod and a curved blade. One end of the upper knife rod is connected to the handle, and the other end of the upper knife rod is connected to the lower knife rod. The blade is installed on the lower knife rod, and the end of the blade in the bending direction has a blade; the lower knife rod is connected to the upper knife rod through a locking universal joint, the locking universal joint is installed on the upper knife rod, and the lower knife rod is detachably connected to the locking universal joint.

[0004] The shape of the patented blade matches the appearance of the bone to be processed, which is conducive to more thorough removal of necrotic bones; the lower knife rod and the upper knife rod are detachably connected, and different knives can be installed according to the needs of osteotomy in different parts, and the direction of the bone knife can be adjusted, which greatly improves the efficiency of osteotomy in orthopedic surgery, shortens the operation time, and also reduces the damage to patients caused by excessive exposure of bone tissue. It has broad application prospects and social and economic benefits.

[0005] However, this patent does not facilitate the rapid replacement of the blade during use, nor the locking function after the blade is installed, so that the blade is prone to shaking and falling off after installation, reducing stability and safety during use. Utility Model Content

[0006] In view of the problems in the related technology, the utility model proposes a quick-change bone knife with a built-in locking mechanism to overcome the above-mentioned technical problems existing in the existing related technology.

[0007] To this end, the specific technical solutions adopted by the utility model are as follows:

[0008] A quick-change bone knife with a built-in locking mechanism comprises a handle, one side of the handle is movably connected to a bone knife body, the inner wall of the handle is provided with a connecting groove, one side of the bone knife body is fixedly connected to a connecting block, one side of the connecting block is fixedly connected to a mounting block, one side of the handle is fixedly connected to a fixed shaft, the outer wall of the fixed shaft is fixedly connected to a vortex spring, the outer wall of the vortex spring is fixedly connected to a positioning block, and the inner wall of the positioning block is provided with a through groove.

[0009] Preferably, threads are distributed on the inner wall of the connecting groove, and the mounting block is connected to the handle via the connecting groove.

[0010] Preferably, the connection block is connected to the bone cutter body by welding, and the connection block has a concave-shaped structure when viewed from the front.

[0011] Preferably, threads are distributed on the outer wall of the mounting block, and the threads on the outer wall of the mounting block are meshed with the threads on the inner wall of the connecting groove.

[0012] Preferably, the fixed shaft is connected to the positioning block through a through slot, and the positioning block is rotatably connected to the handle through the fixed shaft.

[0013] Preferably, the positioning block forms a rotating structure with the fixed shaft through a vortex spring, and the positioning block is a "concave"-shaped structure when viewed from the front.

[0014] Preferably, the positioning blocks and the connecting blocks are engaged with each other, and the positioning blocks are symmetrically distributed on both sides of the connecting block.

[0015] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0016] The beneficial effects of the utility model are as follows: through the arrangement of the handle, the bone knife body, the connecting groove, the connecting block, the mounting block, the fixed shaft, the vortex spring, the positioning block and the through groove, the function of facilitating the installation and disassembly of the bone knife body is achieved, which is then conducive to the rapid replacement of the bone knife body, thereby improving the convenience of operation, and at the same time is conducive to improving the firmness of the bone knife body after installation, avoiding the situation where the bone knife body falls off after installation, thereby improving the stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the front cross-section structure of a quick-change bone knife with a locking mechanism according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the front view connection structure of a handle and a bone knife body of a quick-change bone knife with a locking mechanism according to an embodiment of the utility model;

[0020] Figure 3 A quick-change bone knife with a locking mechanism according to an embodiment of the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of a positioning block of a quick-change bone knife with a locking mechanism according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Handle; 2. Bone knife body; 3. Connecting groove; 4. Connecting block; 5. Mounting block; 6. Fixed shaft; 7. Vortex spring; 8. Positioning block; 9. Through groove. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the utility model, a quick-change osteotome with a built-in locking mechanism is provided.

[0026] Embodiment 1;

[0027] like Figure 1-Figure 4 As shown, the quick-change bone knife with a built-in locking mechanism according to an embodiment of the utility model includes a handle 1, one side of the handle 1 is movably connected with a bone knife body 2, the inner wall of the handle 1 is provided with a connecting groove 3, one side of the bone knife body 2 is fixedly connected with a connecting block 4, one side of the connecting block 4 is fixedly connected with a mounting block 5, one side of the handle 1 is fixedly connected with a fixed shaft 6, the outer wall of the fixed shaft 6 is fixedly connected with a vortex spring 7, the outer wall of the vortex spring 7 is fixedly connected with a positioning block 8, and the inner wall of the positioning block 8 is provided with a through groove 9.

[0028] Through the setting of the above-mentioned structure, the function of facilitating installation and disassembly of the bone knife body 2 is realized, which is conducive to the rapid replacement of the bone knife body 2, thereby improving the convenience of operation, and at the same time is conducive to improving the firmness of the bone knife body 2 after installation, avoiding the situation where the bone knife body 2 falls off after installation, thereby improving the stability during use.

[0029] Furthermore, threads are distributed on the inner wall of the connecting groove 3 , and the mounting block 5 is connected to the handle 1 through the connecting groove 3 .

[0030] The above-mentioned structure facilitates the installation of the bone cutter body 2 and the handle 1 through the installation block 5 .

[0031] Furthermore, the connecting block 4 is welded to the bone cutter body 2 , and the connecting block 4 is a “concave” shaped structure when viewed from the front. The positioning blocks 8 are engaged with the connecting block 4 , and the positioning blocks 8 are symmetrically distributed on both sides of the connecting block 4 .

[0032] The above-mentioned structure makes it easier for the positioning block 8 to clamp the mounting block 5, thereby improving the firmness of the bone cutter body 2 after installation.

[0033] Furthermore, threads are distributed on the outer wall of the mounting block 5 , and the threads on the outer wall of the mounting block 5 are meshed with the threads on the inner wall of the connecting groove 3 .

[0034] The above-mentioned structure facilitates thread locking between the mounting block 5 and the connecting groove 3 .

[0035] Furthermore, the fixed shaft 6 is connected to the positioning block 8 through the through slot 9, and the positioning block 8 is rotatably connected to the handle 1 through the fixed shaft 6.

[0036] The above-mentioned structure facilitates the positioning block 8 to rotate through the fixed shaft 6 .

[0037] Furthermore, the positioning block 8 forms a rotating structure with the fixed shaft 6 through the vortex spring 7, and the positioning block 8 is a "concave"-shaped structure when viewed from the front.

[0038] The above-mentioned structure facilitates the vortex spring 7 to drive the positioning block 8 to reset and rotate.

[0039] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0040] In actual application, first, the positioning block 8 is rotated to drive the vortex spring 7 to deform, and then the positioning block 8 releases the clamping of the connecting block 4, so that the connecting block 4 can be driven to drive the mounting block 5 to rotate, and then the mounting block 5 is slid through the threaded connection with the connecting groove 3, thereby facilitating the disassembly and replacement of the bone knife body 2. After the subsequent replacement is completed, the vortex spring 7 drives the positioning block 8 to reset and rotate through the elasticity of the vortex spring 7, so that the positioning block 8 limits and clamps the connecting block 4, thereby avoiding the rotation of the bone knife body 2 during use, thereby avoiding the sliding of the bone knife body 2 through the threaded connection between the mounting block 5 and the connecting groove 3, thereby improving the firmness during use.

[0041] In summary, with the aid of the above technical solution of the present invention, the anti-falling function is achieved through the setting of the locking structure.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-change bone knife with a built-in locking mechanism, characterized in that: The invention comprises a handle (1), one side of the handle (1) is movably connected to a bone knife body (2), the inner wall of the handle (1) is provided with a connecting groove (3), one side of the bone knife body (2) is fixedly connected to a connecting block (4), one side of the connecting block (4) is fixedly connected to a mounting block (5), one side of the handle (1) is fixedly connected to a fixed shaft (6), the outer wall of the fixed shaft (6) is fixedly connected to a vortex spring (7), the outer wall of the vortex spring (7) is fixedly connected to a positioning block (8), and the inner wall of the positioning block (8) is provided with a through groove (9).

2. A quick-change bone knife with a locking mechanism according to claim 1, characterized in that: The inner wall of the connecting groove (3) is provided with threads, and the mounting block (5) is connected to the handle (1) via the connecting groove (3).

3. The quick-change bone knife with a locking mechanism according to claim 1, characterized in that: The connecting block (4) is connected to the bone cutter body (2) by welding, and the connecting block (4) has a "concave"-shaped structure when viewed from the front.

4. The quick-change bone knife with a locking mechanism according to claim 1, characterized in that: The outer wall of the mounting block (5) is provided with threads, and the threads on the outer wall of the mounting block (5) are meshed with the threads on the inner wall of the connecting groove (3).

5. The quick-change bone knife with a built-in locking mechanism according to claim 1, characterized in that: The fixed shaft (6) is connected to the positioning block (8) through a through slot (9), and the positioning block (8) is rotatably connected to the handle (1) through the fixed shaft (6).

6. The quick-change bone knife with a locking mechanism according to claim 1, characterized in that: The positioning block (8) forms a rotating structure with the fixed shaft (6) through the vortex spring (7), and the positioning block (8) is a "concave"-shaped structure when viewed from the front.

7. The quick-change bone knife with a locking mechanism according to claim 1, characterized in that: The positioning block (8) and the connecting block (4) are mutually engaged, and the positioning blocks (8) are symmetrically distributed on both sides of the connecting block (4).

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