Cutting tool

Abstract

The utility model discloses a cutting tool. The cutting tool comprises a protective sleeve and a cutting part. The cutting part is composed of a transmission rod and a blade assembly. The protective sleeve is of a hollow tubular structure, an opening is formed in the side wall of one end of the protective sleeve, and one end of the transmission rod is connected with the blade assembly. The cutting component is arranged in the protective sleeve, and the blade assembly is arranged at an opening of the protective sleeve. The end, provided with the opening, of the protective sleeve is further provided with a cover-shaped structure with the preset depth, and the cover-shaped structure serves as the bottom of the end, provided with the opening, of the protective sleeve. According to the cutting tool, power provided by the power component can be transmitted to the blade assembly through the transmission rod, so that the blade assembly conducts cutting work in a rotating mode, meanwhile, the protective sleeve limits the working range of the blade assembly through an opening structure, the safety of cutting work is effectively guaranteed, and the cutting efficiency is improved. And the working efficiency of cutting the ligamentum flavum in the minimally invasive spine surgery is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical surgical operations, in particular to a cutting tool. Background Art

[0002] With the continuous advancement of science and technology, the medical field has also made great progress. In spinal surgery, minimally invasive spinal surgery has gradually replaced traditional spinal surgery.

[0003] However, the current minimally invasive spine surgery has a low overall efficiency when dealing with an important tissue structure: the yellow ligament, which greatly increases the time of the operation. This is because the yellow ligament is thick and tough, and the operating space in minimally invasive spine surgery is usually very small. In addition, there are important nerve tissues around the yellow ligament, which makes the treatment of the yellow ligament always difficult in minimally invasive spine surgery. The existing method of dealing with the yellow ligament is to use forceps for manual operation. The structure of the forceps is as follows: Figure 1 shown.

[0004] Figure 1 It is a structural schematic diagram of the biting forceps in the prior art.

[0005] Among them, 1 and 2 represent the two handles of the bite forceps, and 3 and 4 represent the two mouthpieces of the bite forceps. In actual surgery, the bite forceps will be installed in a preset working area. When the handles of the bite forceps are affected by external forces, the mouthpiece will close, thereby removing a part of the yellow ligament within the working range of the mouthpiece.

[0006] However, although the forceps can gradually remove the yellow ligament while working, they can only remove a small part each time, the overall efficiency is low, and it also tests the operating skills of the surgeon and has a high safety risk.

[0007] Therefore, how to safely and efficiently cut the yellow ligament during minimally invasive spinal surgery is an urgent problem to be solved. Utility Model Content

[0008] The utility model provides a cutting tool to partially solve the above problems existing in the prior art.

[0009] The utility model adopts the following technical solutions:

[0010] The utility model provides a cutting tool, which comprises: a protective sleeve, a cutting component, and the cutting component is composed of a transmission rod and a blade assembly;

[0011] The protective sleeve is a hollow tubular structure, a side wall at one end of the protective sleeve is provided with an opening, and one end of the transmission rod is connected to the blade assembly;

[0012] The cutting component is placed inside the protective sleeve, and the blade assembly is placed at the opening of the protective sleeve.

[0013] Optionally, the cutting tool further comprises: a power component, the power component consisting of a motion component and a connection component;

[0014] One end of the transmission rod which is not connected to the blade assembly is connected to one end of the connecting assembly, and the other end of the connecting assembly is connected to the moving assembly.

[0015] Optionally, the end of the protective sleeve provided with the opening is also provided with a cover-like structure with a preset depth, serving as the bottom of the end of the protective sleeve provided with the opening.

[0016] Optionally, the transmission rod consists of a first transmission rod and a second transmission rod, one end of the first transmission rod is connected to the blade assembly, the other end of the first transmission rod is connected to one end of the second transmission rod, and the other end of the second transmission rod is connected to the motion assembly.

[0017] Optionally, a diameter of the second transmission rod is greater than a diameter of the first transmission rod.

[0018] Optionally, the blade assembly is composed of a preset number of blades, and the preset number of blades are arranged around one end of the transmission rod with the transmission rod as an axis.

[0019] Optionally, for each blade, the blade is bent toward the axis of the shaft at a preset angle with the transmission rod as the shaft.

[0020] Optionally, one end of the transmission rod connected to the motion component is provided with a connection structure of a preset shape, and the transmission rod is connected to the motion component via the connection structure.

[0021] Optionally, the transmission rod is connected to the motion component through the connecting structure in a mortise and tenon manner.

[0022] Optionally, the plane where the opening of the protective sleeve is located and the planes where the two ends of the axis of the protective sleeve are located are inclined at a preset angle to the axis of the protective sleeve.

[0023] From the above content, it can be seen that the cutting tool provided in the utility model can transmit the power provided by the power component to the blade assembly through the transmission rod, so that the blade assembly can perform cutting work in a rotating manner, and at the same time, the protective sleeve limits the working range of the blade assembly with an open structure, effectively ensuring the safety of the cutting work. In practical applications, this tool can greatly improve the work efficiency when cutting the yellow ligament in minimally invasive spinal surgery, and limit the cutting range of the blade by the protective sleeve, reducing the probability of normal tissue being accidentally cut, effectively protecting the patient's health and life safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 It is a structural schematic diagram of the bite forceps in the prior art;

[0026] Figure 2 A schematic diagram of a cutting tool provided in the utility model;

[0027] Figure 3 A schematic top view of the cutting tool provided in the utility model;

[0028] Figure 4 A schematic diagram of a power component of a cutting tool provided in the utility model;

[0029] Figure 5 It is a schematic diagram of a cutting tool with different transmission rod structures provided in the utility model;

[0030] Figure 6 A schematic diagram of a cutting tool with different blade assembly structures provided in the utility model;

[0031] Figure 7 Schematic diagram of cutting tools with different opening design structures provided in the utility model;

[0032] Figure 8 Schematic diagram of cutting tools with different solid bottom structures provided in the utility model;

[0033] Fig. 9 A schematic diagram of a cutting tool with different component structures provided in the utility model;

[0034] in, Figure 2201 refers to a protective sleeve of a cutting tool, 202 refers to a transmission rod in a cutting component, 203 refers to a blade assembly in a cutting component, and 204 refers to a cutting component composed of the blade assembly 203 and the transmission rod 202;

[0035] Figure 3 201 refers to a protective sleeve of a cutting tool, 202 refers to a transmission rod, and 205 refers to a connecting structure provided at one end of the transmission rod that is not connected to the blade assembly;

[0036] Figure 4 206 refers to a moving assembly of a power component of a cutting tool, and 207 refers to a connecting assembly of the power component of the cutting tool;

[0037] Figure 5 301 refers to a protective sleeve of a cutting tool, 302 refers to a second transmission rod in the transmission rod, 303 refers to a first transmission rod in the transmission rod, 304 refers to a transmission rod composed of the second transmission rod 302 and the first transmission rod 303, 305 refers to a blade assembly in a cutting part, and 306 refers to a cutting part composed of the blade assembly 305 and the transmission rod 304;

[0038] Figure 6 401 refers to a protective sleeve of a cutting tool, 402 refers to a transmission rod in a cutting component, 403 refers to a blade assembly in a cutting component, and 404 refers to a cutting component composed of the blade assembly 403 and the transmission rod 402;

[0039] Figure 7 501 refers to a protective sleeve of a cutting tool, 502 refers to a transmission rod in a cutting component, 503 refers to a blade assembly in a cutting component, and 504 refers to a cutting component composed of the blade assembly 503 and the transmission rod 502;

[0040] Figure 8 601 refers to a protective sleeve of a cutting tool, 602 refers to a transmission rod in a cutting component, 603 refers to a blade assembly in a cutting component, and 604 refers to a cutting component composed of the blade assembly 603 and the transmission rod 602;

[0041] Fig. 9 701 refers to the protective sleeve of the cutting tool, 702 refers to the second transmission rod in the transmission rod, 703 refers to the first transmission rod in the transmission rod, 704 refers to the blade assembly in the cutting part, 705 refers to the transmission rod composed of the second transmission rod 702 and the first transmission rod 703, and 706 refers to the cutting part composed of the blade assembly 704 and the transmission rod 705. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described clearly and completely in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0043] Nowadays, minimally invasive spinal surgery is developing rapidly and has gradually replaced traditional spinal surgery. At present, when dealing with the "yellow ligament", an important tissue structure, minimally invasive spinal surgery mainly uses forceps for manual operation. When working, the forceps can gradually remove the yellow ligament under the operation of the surgeon, but only a small part can be removed each time. The consequences of this lead to a significant increase in operation time, a decrease in overall efficiency, and a great test of the surgeon's experience and skills, with a high safety risk.

[0044] In order to solve the problem of low efficiency and high safety risk in the treatment of "yellow ligament" by minimally invasive spinal surgery in the prior art, the utility model provides a cutting tool, which includes: a protective sleeve, a cutting component, and the cutting component is composed of a transmission rod and a blade assembly, as shown in FIG. Figure 2 shown.

[0045] Figure 2 It is a schematic diagram of the cutting tool provided in the utility model.

[0046] according to Figure 2 As shown, the protective sleeve 201 of the cutting tool is a hollow tubular structure, the side wall of the rear end of the protective sleeve 201 is provided with an opening, and the rear end of the protective sleeve 201 is also provided with a solid bottom. The transmission rod 202 in the cutting component 204 is passed from the top of the protective sleeve 201 and is placed inside the protective sleeve 201, and the blade assembly 203 is placed at the opening at the rear end of the protective sleeve 201, and the transmission rod 202 and the blade assembly 203 constitute the cutting component 204.

[0047] The blade assembly 203 is composed of a preset number of blades, such as Figure 2 As shown, the blade assembly 203 is connected to one end of the transmission rod 202 and is placed at the opening of the rear end of the protective sleeve 201. One end of the transmission rod 202 is connected to the blade assembly 203, and the other end is provided with a connection structure of a preset shape. Figure 2 It is not obvious in the figure, please refer to Figure 3 .

[0048] Figure 3It is a top view schematic diagram of the cutting tool provided in the utility model.

[0049] Depend on Figure 3 As shown in , the transmission rod 202 is placed in the protective sleeve 201, and one end of the transmission rod 202 is provided with a connection structure 205 of a preset shape. The specific shape of the connection structure 205 needs to be adapted according to the power component connected to the connection structure 205.

[0050] The utility model also provides a power component, which is composed of a motion component and a connection component. Figure 4 shown.

[0051] Figure 4 This is a schematic diagram of the power component of the cutting tool provided in the utility model.

[0052] from Figure 4 It can be seen that the power component of the cutting tool is composed of a motion component 206 and a connecting component 207. The motion component 206 is connected to one end of the connecting component 207, and the other end of the connecting component 207 is connected to the connecting structure 205. The end of the connecting component 207 connected to the connecting structure 205 is provided with a groove of a preset shape, and is connected to the connecting structure 205 by a mortise and tenon structure. In the actual working process, the motion component 206 can provide power, and the power is transmitted to the transmission rod 202 through the connecting component 207, and then transmitted to the blade assembly 203 by the transmission rod 202, and finally the blade in the blade assembly 203 is rotated to remove the "yellow ligament" within the working range of the blade. This working method can make the cutting process continuous, stable and fast, can avoid the mistakes that may be caused by manual operation, and improve the overall efficiency and safety of the operation.

[0053] In summary, the overall working method of the cutting tool provided by the utility model is that the power component is directly connected to the cutting component and provides power to the cutting component, the protective sleeve is fixed in a preset manner, and the cutting component is placed inside the protective sleeve, and the blade assembly of the cutting component is placed at the opening of the protective sleeve. When power is transmitted to the blade assembly, a preset number of blades in the blade assembly will rotate and cut, and the "yellow ligament" within the working range will be removed.

[0054] It should be noted that in the above content and illustrations, the design of the transmission rod, blade assembly, opening design and the solid bottom of the rear end of the protective sleeve are only selected for the convenience of understanding and introduction. Figure 2The structure shown in (the transmission rod is a cylindrical structure as a whole, the blade in the blade assembly is a rectangular blade, the opening is designed as a rectangular parallelepiped structure, and the solid bottom of the rear end of the protective sleeve is a solid thin surface). In the present invention, the specific structure of the transmission rod, the blade assembly, the opening design, and the solid bottom of the rear end of the protective sleeve is not strictly limited, and can be flexibly adjusted according to actual conditions and cost requirements. For cutting tools with different component structures, please refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 .

[0055] Figure 5 It is a schematic diagram of a cutting tool with different transmission rod structures provided in the utility model.

[0056] like Figure 5 In the cutting tool shown, the second transmission rod 302 and the first transmission rod 303 together form a transmission rod 304, and the diameter of the second transmission rod 302 is larger than the diameter of the first transmission rod 303, the blade assembly 305 is connected to one end of the first transmission rod 303, and the other end of the first transmission rod 303 is connected to the second transmission rod 302, and the end of the second transmission rod 302 that is not connected to the first transmission rod 303 is provided with a connection structure of a preset shape, and the transmission rod 304 and the blade assembly 305 form a cutting component 306. When the power component provides power, the power will be first transmitted to the second transmission rod 302, and then transmitted from the second transmission rod 302 to the first transmission rod 303, and finally transmitted to the blade assembly 305.

[0057] Figure 6 It is a schematic diagram of a cutting tool with different blade assembly structures provided in the utility model.

[0058] like Figure 6 In the cutting tool shown, Figure 2 Based on the cutting tool shown in FIG. 1 , the structure of the blade assembly 403 is changed from Figure 6 It can be seen that the blade assembly 403 is composed of a preset number of blades, and the blade assembly 403 is connected to one end of the transmission rod 402. For each blade in the blade assembly 403, the blade is bent toward the axis of the shaft at a preset angle with the transmission rod 402 as the axis. This bending setting enables each blade in the blade assembly 403 to play a greater role in the rotary cutting process, thereby improving the cutting efficiency to a certain extent.

[0059] Figure 7 Schematic diagram of cutting tools with different opening design structures provided in the utility model.

[0060] like Figure 7 In the cutting tool shown, Figure 2On the basis of the cutting tool shown, the side wall opening at the rear end of the protective sleeve 501 is designed to be inclined, wherein the plane where the side wall opening at the rear end of the protective sleeve 501 is located is inclined at a preset angle to the axis of the protective sleeve 501.

[0061] Figure 8 It is a schematic diagram of cutting tools with different solid bottom structures provided in the utility model.

[0062] like Figure 8 In the cutting tool shown, Figure 2 On the basis of the cutting tool shown, the solid bottom of the rear end of the protective sleeve 601 is designed to be cap-shaped. The rear end of the protective sleeve 601 is provided with a cap-shaped structure with a preset depth as the bottom of the rear end of the protective sleeve 601. This design can further limit the cutting range of the blade assembly 603 and improve the safety of the operation.

[0063] It should be noted that the present invention can also apply all the above-mentioned component structures to deal with various problems that may arise in actual situations, such as Fig. 9 shown.

[0064] Fig. 9 It is a schematic diagram of a cutting tool with different component structures provided in the utility model.

[0065] Depend on Fig. 9 It can be seen that the protective sleeve 701 of the cutting tool is a hollow tubular structure, the side wall of the rear end of the protective sleeve 701 is provided with an opening, and the plane where the opening is located is inclined at a preset angle to the axis of the protective sleeve 701, and the rear end of the protective sleeve 701 is also provided with a cover structure with a preset depth as the bottom of the rear end of the protective sleeve 701. The first transmission rod 703 in the cutting component 706 is introduced from the top of the protective sleeve 701 and placed in the protective sleeve 701, and the blade assembly 704 is placed at the opening at the rear end of the protective sleeve 701, the second transmission rod 702 and the first transmission rod 703 form a transmission rod 705, and the diameter of the second transmission rod 702 is greater than the diameter of the first transmission rod 703. 05 and the blade assembly 704 form a cutting component 706. The blade assembly 704 is composed of a preset number of blades. The blade assembly 704 is connected to one end of the first transmission rod 703. For each blade in the blade assembly 704, the blade is bent at a preset angle to the axis of the shaft with the transmission rod 705 as the axis. This bending setting enables each blade in the blade assembly 704 to play a greater role in the rotary cutting process, thereby improving the overall efficiency of the operation to a certain extent. At the same time, the opening design of the protective sleeve 701 and the cover-shaped design of the tail end can limit the working range of the blade assembly 704, ensuring that normal tissue will not be accidentally cut during the operation, thereby greatly improving the safety of the operation.

[0066] Meanwhile, in actual industrial production, the second transmission rod 702 and the first transmission rod 703 can also be produced as a whole, so that the two transmission rods with different diameters become a whole. Figure 2 Compared with the middle transmission rod 202, the overall mass of the second transmission rod 702 and the first transmission rod 703 is lower, thereby reducing the overall weight of the cutting tool.

[0067] In addition, in the present invention, the cutting component and the power component are connected by mortise and tenon joints. In view of different application scenarios and actual conditions, different styles of power components can be selected. The present invention does not strictly limit the specific style and type of the power component.

[0068] From the above content, it can be seen that in the utility model, the cutting tool is powered by a power component, and can perform stable, continuous and rapid cutting, which greatly improves the efficiency of the operation. Under the constraints of the opening design of the protective sleeve and the tail end cover design, the cutting range of the cutting tool can be well limited, which greatly improves the safety of the operation, and can effectively avoid possible errors that may occur during manual cutting, thereby ensuring the physical health and life safety of the patient on the operating table.

[0069] Each embodiment of the present invention is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0070] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of this application.

Claims

1. A cutting tool, characterized in that: The cutting tool comprises: a protective sleeve and a cutting component, wherein the cutting component is composed of a transmission rod and a blade assembly; The protective sleeve is a hollow tubular structure, a side wall at one end of the protective sleeve is provided with an opening, and one end of the transmission rod is connected to the blade assembly; The cutting component is placed inside the protective sleeve, and the blade assembly is placed at the opening of the protective sleeve.

2. The cutting tool according to claim 1, characterized in that The cutting tool further comprises: a power component, the power component being composed of a motion component and a connection component; One end of the transmission rod which is not connected to the blade assembly is connected to one end of the connecting assembly, and the other end of the connecting assembly is connected to the moving assembly.

3. The cutting tool according to claim 1, characterized in that The end of the protective sleeve provided with the opening is also provided with a cover-shaped structure with a preset depth, serving as the bottom of the end of the protective sleeve provided with the opening.

4. The cutting tool according to claim 2, characterized in that The transmission rod consists of a first transmission rod and a second transmission rod, one end of the first transmission rod is connected to the blade assembly, the other end of the first transmission rod is connected to one end of the second transmission rod, and the other end of the second transmission rod is connected to the motion assembly.

5. The cutting tool according to claim 4, characterized in that The diameter of the second transmission rod is greater than the diameter of the first transmission rod.

6. The cutting tool according to claim 1, characterized in that The blade assembly is composed of a preset number of blades, and the preset number of blades are arranged around one end of the transmission rod with the transmission rod as an axis.

7. The cutting tool according to claim 6, characterized in that For each blade, the blade is bent toward the axis of the shaft at a preset angle with the transmission rod as the shaft.

8. The cutting tool according to claim 2, characterized in that One end of the transmission rod connected to the motion component is provided with a connection structure of a preset shape, and the transmission rod is connected to the motion component through the connection structure.

9. The cutting tool according to claim 8, characterized in that The transmission rod is connected to the motion component through the connection structure in a mortise and tenon connection manner.

10. The cutting tool according to claim 1, characterized in that The plane where the opening of the protective sleeve is located is inclined at a preset angle to the axis of the protective sleeve.

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