Spine abrasive drill convenient to disassemble and assemble

Abstract

The utility model relates to the field of medical instruments, in particular to a spine abrasive drill convenient to disassemble and assemble. The clamping head comprises a clamping head shell, a plugging port, a pushing button, a fixing piece, an outer sliding way, an inner sliding way, a sliding rail, a clamping mechanism and a connecting piece. An accommodating space is formed in the chuck shell; the plugging port is formed in the bottom end of the chuck shell; the push button is arranged on a shell body of the chuck shell; the fixing piece is located in the chuck shell, and the two sides of the fixing piece are fixedly connected with the inner wall of the chuck shell. The outer slide way is arranged on the chuck shell; the inner slide way is arranged on the fixing piece; the sliding rail is arranged on the fixing piece; a part of the clamping mechanism is placed on the sliding rail; one end of the connecting piece is connected with a part of the clamping mechanism, and the other end of the connecting piece is connected with the pushing button.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a spinal grinding drill which is convenient for assembly and disassembly. Background Art

[0002] Spinal burring is a surgical procedure used to treat spinal-related diseases or problems. This procedure is usually used for spinal fracture repair surgery when a spinal fracture occurs. Spinal burring can stabilize the spinal fracture and promote fracture healing by inserting screws or other implants into the fracture site; for certain spinal deformities, such as scoliosis (curvature of the spine) or abnormal anterior-posterior curvature of the spine, spinal burring can correct spinal posture and increase spinal stability by introducing implants into the bad curvature area of ​​the spine; and for grinding away vertebral plates, articular processes and hyperplastic bone tissue during spinal endoscopic surgery. The grinding head of the spinal burr is divided into: "spherical, straight", and the surface is divided into: "emery, watermelon head", etc.

[0003] However, the existing spinal drills often encounter the following problems when used:

[0004] (1) The drill bit of the existing burr drill does not have the function of separating the vertebrae and soft tissues while protecting the burr side, which results in the need to replace the appropriate burr drill bit according to the actual operation, increasing the complexity of the operation. For example, spinal endoscopic surgery does not have the function of separating the yellow ligament and protecting the important tissues in the spinal canal while grinding the lamina.

[0005] (2) The spinal drill needs to be assembled with the handle before use, and the assembly process is cumbersome and rigorous, which increases the complexity of the surgery and wastes precious surgical time. Utility Model Content

[0006] The main purpose of the utility model is to provide a spinal burr that is easy to assemble and disassemble, which can effectively solve the problem mentioned in the background art that the spinal burr needs to frequently replace the grinding head and cannot be assembled quickly, thereby increasing the difficulty of surgery.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A spinal grinding drill which is convenient to assemble and disassemble comprises:

[0009] A chuck shell, wherein the chuck shell has an accommodating space inside;

[0010] A plug interface, the plug interface is opened at the bottom end of the chuck shell;

[0011] A push button, the push button being arranged on the shell body of the chuck shell;

[0012] A fixing member, the fixing member is located inside the chuck shell, and two sides of the fixing member are fixedly connected to the inner wall of the chuck shell;

[0013] An outer slideway, the outer slideway is provided on the chuck housing;

[0014] An inner slideway, the inner slideway being provided on the fixing member;

[0015] A slide rail, wherein the slide rail is provided on the fixing member;

[0016] A clamping mechanism, part of which is placed on the slide rail;

[0017] A connecting piece, one end of which is connected to a portion of the clamping mechanism, and the other end of which is connected to the push button.

[0018] Characterized in that the clamping mechanism comprises:

[0019] A slider, the slider is placed on the slide rail;

[0020] A limiting protrusion, wherein the limiting protrusion is fixedly arranged on the fixing member;

[0021] A fixing rod, the fixing rod being longitudinally mounted above the limiting protrusion;

[0022] A spring, wherein the spring is sleeved on the fixing rod;

[0023] A sliding protrusion, wherein the sliding protrusion is arranged on the sliding block and is located above the fixing rod;

[0024] Two clamping members, the two clamping members are located on both sides of the spring, the two clamping members are movably connected to the fixing member, and the two clamping members are movably connected to the sliding block;

[0025] An arc-shaped locking member is fixedly connected to the bottom ends of the two clamping members.

[0026] The invention is characterized in that the clamping mechanism is partially composed of the sliding block.

[0027] The invention is characterized by comprising:

[0028] Clamping grooves, which are provided on both sides of the chuck housing and are matched with the two clamping members;

[0029] A sheath tube, the sheath tube being mounted on the top end of the chuck housing;

[0030] A fan-shaped sheath end, the fan-shaped sheath end is fixedly mounted on the top end of the sheath tube;

[0031] A grinding head is placed in the clamping groove.

[0032] The invention is characterized in that the sliding protrusion is provided with a through hole, and the through hole of the sliding protrusion is matched with the fixing rod.

[0033] The invention is characterized in that two inner slideways and two outer slideways are provided.

[0034] The invention is characterized in that the inner diameter of the through hole of the sliding protrusion is smaller than the outer diameter of the spring.

[0035] The invention is characterized in that the number of the arc-shaped locking members corresponds to the number of the two clamping members.

[0036] The invention is characterized in that the clamping groove is communicated with the plug interface.

[0037] Compared with the prior art, the beneficial effects of the utility model are:

[0038] (1) The utility model is provided with a fan-shaped sheath end, which can effectively protect the top and side of the grinding head. At the same time, the fan-shaped sheath end does not completely cover the grinding head, but is spoon-shaped, which can separate the spine from soft tissues such as the yellow ligament, thereby protecting important tissues while continuing to process, reducing the frequency of replacement of the grinding head and reducing the complexity of the operation.

[0039] (2) The utility model is provided with a clamping mechanism. When disassembling or assembling, you only need to manually push the push button to drive the clamping mechanism to operate. After the handle is placed in the plug-in interface, release the push button to clamp it with one click. It is fast and stable, and the operation is more convenient. It can be easily disassembled and assembled, and the doctor can operate it more conveniently when using it. This means that the operation process may be smoother and reduce the operation time and doctor's fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0041] Figure 1 It is a schematic diagram of the overall appearance of the utility model.

[0042] Figure 2 This is a diagram showing the overall internal structure of the utility model.

[0043] Figure 3 This is a structural display diagram of the clamping mechanism of the utility model.

[0044] Figure 4 It is a display diagram of the clamping mechanism of the utility model from other angles.

[0045] Numbers in the figure: 1. chuck housing; 2. plug interface; 3. push button; 4. fixing part; 5. outer slide; 6. inner slide; 7. slide rail; 8. clamping mechanism; 9. connecting part; 801. slider; 802. limit protrusion; 803. fixing rod; 804. spring; 805. sliding protrusion; 806. two clamping parts; 807. arc-shaped locking part; 10. clamping groove; 11. sheath tube; 12. fan-shaped sheath end; 13. grinding head. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figure 1-4 As shown, a spinal grinding drill which is convenient for assembly and disassembly comprises: a chuck shell 1, an insertion interface 2, a push button 3, a fixing member 4, an outer slide 5, an inner slide 6, a slide rail 7, a clamping mechanism 8, and a connecting member 9. There is a accommodating space inside the chuck shell 1; the plug interface 2 is opened at the bottom end of the chuck shell 1; the push button 3 is arranged on the shell body of the chuck shell 1, the fixing part 4 is located inside the chuck shell 1, and the two sides of the fixing part 4 are fixedly connected to the inner wall of the chuck shell 1, the slideway is opened on the chuck shell 1, the inner slideway 6 is opened on the fixing part 4, the slide rail 7 is opened on the fixing part 4, part of the clamping mechanism 8 is placed on the slide rail 7, one end of the connecting part 9 is connected to part of the clamping mechanism 8, and the other end of the connecting part 9 is connected to the push button 3. In simple terms, the clamping mechanism 8 is connected to the push button 3 through the connecting part 9, and the connecting part 9 passes through the outer slideway 5 and the inner slideway 6. When the push button 3 is pushed, the connecting part 9 will move on the outer slideway 5 and the inner slideway 6, thereby driving the clamping mechanism 8.

[0049] In this embodiment, Figure 3-4As shown, in order to design a clamping mechanism 8 that is convenient for assembly and disassembly, a slider 801 is designed to be placed on the slide rail 7, and the clamping mechanism 8 is partially composed of the slider 801, that is, the slider 801 is connected to the clamping mechanism 8 through the connecting piece 9. The limiting protrusion 802 is fixedly arranged on the fixing piece 4, and the setting of the limiting protrusion 802 limits the distance that the slider 801 slides down. The fixing rod 803 is longitudinally installed above the limiting protrusion 802, the spring 804 is sleeved on the fixing rod 803, the sliding protrusion 805 is arranged on the slider 801, and the sliding protrusion 805 is located above the fixing rod 803, the sliding protrusion 805 is provided with a through hole, and the through hole is located in the upper middle of the fixing rod 803 and is slightly larger than the diameter of the fixing rod 803; the two clamping members 806 are located on both sides of the spring 804, and the two clamping members 806 are movably connected to the fixing member 4, and the two clamping members 806 are movably connected to the fixing member 4. 806 is movably connected to the slider 801; the arc-shaped locking piece 807 is fixedly connected to the bottom ends of the two clamping pieces 806, and the inner diameter of the through hole of the sliding protrusion 805 is smaller than the outer diameter of the spring 804. In this way, when the slider 801 slides down to a certain extent, it will be blocked by the limiting protrusion 802, and the fixing rod 803 will pass through the through hole opened by the sliding protrusion 805. The spring 804 that cannot pass through will be squeezed to generate a rebound force. When the push ends, the rebound force will reset the spring 804.

[0050] In this embodiment, the two clamping members 806 will expand outward at an angle due to the movement of the slider 801, and the opening of the clamping groove 10 can effectively increase the expansion range of the two clamping members 806. The provision of the sheath 11 can ensure that important tissues in the spinal canal, such as the nerve root dura mater sac, are effectively protected and improve safety. The arc-shaped locking member 807 of the clamping handle is alloy steel, which is a steel material composed of multiple metal elements and its performance can be adjusted as needed. Alloy steel usually has high strength, hardness and corrosion resistance, and is suitable for locking ports with high strength requirements to ensure the strength and stability of the assembly handle.

[0051] The top diameter of the fan-shaped sheath end 12 is slightly larger than the grinding head. During surgery, the top of the fan-shaped sheath end 12 can act as a spacer to separate the vertebrae from important tissues in the spinal canal, such as the yellow ligament, and continue to shave while protecting the soft tissue.

[0052] It should be noted that the utility model is a spinal grinding drill that is easy to disassemble and assemble. When in use, the push button 3 is manually pushed downward, and the push button 3 moves to drive the connecting member 9 to move on the outer slide 5 and the inner slide 6. The connecting member 9 moves to drive the slider 801 to move, and the slider 801 moves on the slide rail 7 to drive the sliding protrusion 805 fixed on the slider 801. After the sliding protrusion 805 moves downward to a certain extent, the through hole opened on the sliding protrusion 805 will be passed through by the fixing rod 803, and the spring 804 that cannot pass through the through hole will be slid. The protrusion 805 descends and squeezes, and the slider 801 descends, which will cause the two clamping members 806 movably connected to the slider 801 to expand outward. At this time, the connecting end of the handle is inserted into the plug interface 2 and the push button 3 is released. The rebound force of the spring 804 will reset the slider 801, and the two clamping members 806 will also be tightened. The arc-shaped locking member 807 fixedly connected to the two clamping members 806 will also be tightened to fix the handle. After that, the grinding head 13 is inserted into the sheath 11 and locked. The installation is completed. When the disassembly operation is performed, the push button 3 can be pushed again.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spinal grinding drill which is easy to assemble and disassemble, characterized in that: include: A chuck shell (1), wherein the chuck shell (1) has an accommodating space inside; An inserting port (2), the inserting port (2) being disposed at the bottom end of the chuck housing (1); A push button (3), wherein the push button (3) is arranged on the shell body of the chuck shell (1); A fixing member (4), the fixing member (4) being located inside the chuck shell (1), and two sides of the fixing member (4) being fixedly connected to the inner wall of the chuck shell (1); An outer slideway (5), wherein the outer slideway (5) is provided on the chuck housing (1); An inner slideway (6), wherein the inner slideway (6) is provided on the fixing member (4); A slide rail (7), wherein the slide rail (7) is disposed on the fixing member (4); A clamping mechanism (8), part of which is placed on the slide rail (7); A connecting member (9), one end of which is connected to a portion of the clamping mechanism (8), and the other end of which is connected to the push button (3).

2. The spinal grinding drill with easy assembly and disassembly according to claim 1, characterized in that: The clamping mechanism (8) comprises: A slider (801), the slider (801) being placed on the slide rail (7); A limiting protrusion (802), wherein the limiting protrusion (802) is fixedly disposed on the fixing member (4); A fixing rod (803), the fixing rod (803) being longitudinally mounted above the limiting protrusion (802); A spring (804), wherein the spring (804) is sleeved on the fixing rod (803); A sliding protrusion (805), wherein the sliding protrusion (805) is arranged on the sliding block (801), and the sliding protrusion (805) is located above the fixing rod (803); Two clamping members (806), the two clamping members (806) are located on both sides of the spring (804), the two clamping members (806) are movably connected to the fixing member (4), and the two clamping members (806) are movably connected to the sliding block (801); An arc-shaped locking member (807), wherein the arc-shaped locking member (807) is fixedly connected to the bottom ends of the two clamping members (806).

3. The spinal grinding drill with easy assembly and disassembly according to claim 2, characterized in that: Part of the clamping mechanism (8) is composed of the slider (801).

4. The spinal grinding drill with easy assembly and disassembly according to claim 2, characterized in that: include: A clamping groove (10), wherein the clamping groove (10) is provided on both sides of the clamp housing (1), and the clamping groove (10) is arranged in cooperation with the two clamping members (806); A sheath tube (11), the sheath tube (11) being mounted on the top end of the chuck housing (1); A fan-shaped sheath end (12), wherein the fan-shaped sheath end (12) is fixedly mounted on the top end of the sheath tube (11); A grinding head (13), wherein the grinding head (13) is placed in the clamping groove (10).

5. The spinal grinding drill with easy assembly and disassembly according to claim 2, characterized in that: The sliding protrusion (805) is provided with a through hole, and the through hole of the sliding protrusion (805) is arranged in cooperation with the fixing rod (803).

6. The spinal grinding drill with easy assembly and disassembly according to claim 1, characterized in that: The inner slideway (6) and the outer slideway (5) are each provided with two.

7. The spinal grinding drill with easy assembly and disassembly according to claim 2, characterized in that: The inner diameter of the through hole of the sliding protrusion (805) is smaller than the outer diameter of the spring (804).

8. The spinal grinding drill with easy assembly and disassembly according to claim 2, characterized in that: The number of the arc-shaped locking members (807) corresponds to the number of the two clamping members (806).

9. The spinal grinding drill with easy assembly and disassembly according to claim 4, characterized in that: The clamping groove (10) is in communication with the plug-in port (2).

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