Grinding cutter applied to orthopedic surgery

Abstract

The utility model discloses a grinding cutter applied to orthopedic surgery, and relates to the technical field of medical instruments. In order to solve the problems that a doctor needs to spend extra time to take out a grinding drill bit and an inner cutter bar of an existing operation grinding drill cutter when the grinding drill bit and the inner cutter bar fall into a human body together, and the efficiency and safety of an operation are affected, the following technical scheme is provided: the grinding drill cutter comprises an inner cutter assembly, an outer cutter assembly and a cutter holder; the inner cutter assembly comprises a grinding drill bit and an inner cutter bar connected to the tail end of the grinding drill bit, the tail end of the grinding drill bit is sleeved with an anti-falling piece used for preventing the inner cutter bar from falling, the outer cutter assembly comprises an inner cutter pipe and an outer cutter pipe, and the anti-falling piece is arranged between the inner cutter bar supporting piece and the grinding drill bit supporting piece. The position, located on the anti-falling piece, of the inner knife tube is of a hollow structure, and the outer diameter of the anti-falling piece is larger than the inner diameter of the inner knife tube. Through the anti-falling structure, the inner cutter bar cannot fall into a human body downwards and can be taken out of the human body along with the power handle, so that the safety and the efficiency of an operation are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a grinding tool used in orthopedic surgery. Background Art

[0002] In orthopedic surgery, bone tissue of patients is often removed by medical grinding drills. Taking spinal surgery as an example, during surgery, the grinding tool is driven by a power handle to grind the spinal tissue. The grinding tool generally includes an inner knife assembly and an outer knife assembly. The inner knife assembly is driven by a motor to rotate around its own axis relative to the outer knife assembly to grind the lesion site.

[0003] At present, the structure of spinal drill equipment has been basically fixed, and the research and development mainly focuses on the problems encountered by doctors during actual surgery and makes targeted improvements. For example, after it is actually put into use, there are cases where the drill bit and the inner cutter rod fall into the human body, and the doctor needs to spend extra time to remove it, which affects the efficiency and safety of the operation. Utility Model Content

[0004] The utility model aims to provide a grinding tool for orthopedic surgery to solve the problem that the existing surgical grinding tools have the problem that the drill bit and the inner tool rod fall into the human body, and the doctor needs to spend extra time to remove them, which affects the efficiency and safety of the operation.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A grinding tool used in orthopedic surgery, comprising: an inner knife assembly, an outer knife assembly sleeved outside the inner knife assembly, and a knife seat connected to the rear end of the outer knife assembly;

[0007] The inner cutter assembly comprises a drill bit and an inner cutter rod connected to the rear end of the drill bit. The rear end of the drill bit is sleeved with an anti-dropping piece, which is used to prevent the inner cutter rod from falling.

[0008] Furthermore, the outer knife assembly includes an inner knife tube and an outer knife tube sleeved on the inner knife tube, the area on the inner knife tube close to the anti-dropping part is a hollow structure, and the outer diameter of the anti-dropping part is larger than the inner diameter of the inner knife tube.

[0009] Furthermore, a drill bit support is provided between the inner cutter tube and the rear end of the drill bit, an inner cutter rod support is provided between the outer cutter tube and the inner cutter rod, and an anti-dropping member is provided between the inner cutter rod support and the drill bit support.

[0010] Furthermore, a fluid channel is formed between the inner blade tube and the outer blade tube, and the fluid channel is used to provide flushing water to the surgical site during surgery.

[0011] Furthermore, the rear end of the knife holder is connected to a power handle, and the power handle provides the power required for the operation to the drill bit.

[0012] Furthermore, the anti-dropping component is a magnetic clamping ring.

[0013] Furthermore, the inner tool rod support is a bearing, a sleeve or a guide ring.

[0014] Furthermore, the drill bit support is a bearing or a guide sleeve.

[0015] The utility model has the following beneficial effects:

[0016] In the grinding tool of the utility model, an anti-dropping piece is arranged at the front end of the inner tool rod near the grinding drill bit, so that once the rear end of the inner tool rod falls due to loosening of the welding point or other reasons, the anti-dropping piece can resist the structure of the inner tool tube, so that the inner tool rod will not fall downward into the human body, and can be taken out of the human body together with the power handle, thereby ensuring the safety and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structure diagram of the grinding tool;

[0018] Figure 2 is a cross-sectional view of the grinding tool;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0020] Figures 1 to 3 The reference numerals shown in the figure represent respectively: 1-inner cutter assembly; 11-drill bit; 12-inner cutter rod; 13-inner cutter rod support; 14-drill bit support; 15-anti-drop part; 2-outer cutter assembly; 21-outer cutter tube; 22-inner cutter tube; 3-cutter seat. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying 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 those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] Please refer to Figure 1-2The utility model provides a grinding tool for orthopedic surgery, which includes: an inner knife assembly 1, an outer knife assembly 2 sleeved outside the inner knife assembly, and a knife seat 3 connected to the rear end of the outer knife assembly 2; the inner knife assembly 1 directly participates in the cutting or grinding of bones or hard tissues, and can often be designed to adapt to different angles according to different surgical needs. The inner knife assembly 1 allows the doctor to accurately control the depth and direction of the cutting during use, ensuring the accuracy of the operation while maximally protecting the surrounding soft tissues. The outer knife assembly 2 usually plays a protective role around the inner knife assembly 1 to prevent excessive cutting or accidental injury to surrounding tissues during surgery. The outer knife assembly 2 can also serve as a guide for the cutting process to ensure that the inner knife assembly 1 is carried out along a predetermined path. The outer knife assembly 2 can also provide additional stability to help reduce vibration during surgery, making the cutting process smoother and safer.

[0023] The knife holder 3 is a supporting structure for the grinding tool, which is used to fix the inner knife assembly 1 and the outer knife assembly 2 to ensure the correct position and stability during the operation. The knife holder 3 also serves as an operating interface, through which the doctor controls the grinding tool and adjusts the cutting angle and depth. Since an external power source is required as the power for grinding during the operation, a power handle can be connected to the rear end of the knife holder 3, and the power handle can provide the power required for the operation to the drill bit 11. The inner knife assembly and the outer knife assembly are fixed in the knife holder. Before the operation, the knife holder is connected to the power handle, and the two are locked by a locking device, and the power handle is used to provide the power required for the operation to the drill bit.

[0024] Please refer to Figure 3 The outer knife assembly 2 includes an inner knife tube 22 and an outer knife tube 21 sleeved on the inner knife tube 22. The inner knife tube 22 is hollowed out at the anti-dropping member 15. The outer diameter of the anti-dropping member 15 is larger than the inner diameter of the inner knife tube 22. The inner knife assembly 1 includes a drill bit 11 and an inner knife rod 12 connected to the rear end of the drill bit 11. An inner knife rod support 13 is provided between the outer knife tube 21 and the inner knife rod 12. A drill bit support 14 is provided between the inner knife tube 22 and the rear end of the drill bit 11. The anti-dropping member 15 is provided between the inner knife rod support 13 and the drill bit support 14.

[0025] Please refer to Figure 3 The inner cutter bar support 13 is sleeved on the outside of the inner cutter bar 12, and the drill bit support 14 and the anti-dropping member 15 are sleeved on the outside of the drill bit 11, respectively, and the outer diameter of the anti-dropping member 15 is larger than the outer diameter of the drill bit support 14. Since the area near the anti-dropping member 15 on the inner cutter tube 22 is hollow, when the inner cutter bar 12 falls, the anti-dropping member 15 moves toward the human body together. Since the outer diameter of the anti-dropping member 15 is large, it can abut against the hollow area on the inner cutter tube 22 and get stuck on the inner cutter tube 22, thereby preventing the inner cutter bar 12 from falling further downward.

[0026] The inner tool rod support 13 provides support for the inner tool rod 12 to ensure that the cutting part of the tool can move stably during the operation, reduce inaccurate cutting caused by vibration or deviation, and ensure that the doctor can accurately cut the bone or other tissue of the affected area according to the needs of the operation. The inner tool rod support 13 also helps to reduce the wear of the inner tool rod 12 during use and extend the service life of the surgical tool; the function of the drill bit support 14 is to provide stable support for the drill bit 11. For performing delicate and complex orthopedic surgical procedures, it can provide stable support to ensure that the drill bit 11 can operate at the correct angle and position. With good support, the cutting efficiency of the drill bit 11 can be improved, the operation time can be reduced, and the risk of damage to surrounding tissues during the operation can be reduced.

[0027] A large amount of surgical waste and waste liquid will be generated during the cutting process, and the surgical site needs to be cleaned in real time. Therefore, a fluid channel is set between the inner knife tube 22 and the outer knife tube 21. The fluid channel can be used to allow cleaning water to flow continuously to the surgical site during the operation to provide flushing water.

[0028] 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 grinding tool for orthopedic surgery, characterized in that: include: An inner knife assembly (1), an outer knife assembly (2) sleeved outside the inner knife assembly, and a knife seat (3) connected to the rear end of the outer knife assembly (2); The inner cutter assembly (1) comprises a drill bit (11) and an inner cutter rod (12) connected to the rear end of the drill bit (11); the rear end of the drill bit (11) is provided with an anti-drop component (15); the anti-drop component (15) is used to prevent the inner cutter rod (12) from falling.

2. The grinding tool for orthopedic surgery according to claim 1, characterized in that: The outer knife assembly (2) comprises an inner knife tube (22) and an outer knife tube (21) sleeved on the inner knife tube (22); a region of the inner knife tube (22) close to the anti-drop component (15) is a hollow structure; and an outer diameter of the anti-drop component (15) is greater than an inner diameter of the inner knife tube (22).

3. The grinding tool for orthopedic surgery according to claim 2, characterized in that: A drill bit support (14) is provided between the inner knife tube (22) and the rear end of the drill bit (11), an inner knife rod support (13) is provided between the outer knife tube (21) and the inner knife rod (12), and the anti-drop component (15) is arranged between the inner knife rod support (13) and the drill bit support (14).

4. The grinding tool for orthopedic surgery according to claim 2, characterized in that: A fluid channel is formed between the inner blade tube (22) and the outer blade tube (21), and the fluid channel is used to provide flushing water to the surgical site during surgery.

5. The grinding tool for orthopedic surgery according to claim 4, characterized in that: The rear end of the knife seat (3) is connected to a power handle, and the power handle provides the grinding drill bit (11) with power required for surgery.

6. The grinding tool for orthopedic surgery according to claim 1, characterized in that: The anti-dropping component (15) is a magnetic clamping ring.

7. The grinding tool for orthopedic surgery according to claim 3, characterized in that: The inner cutter bar support (13) is a bearing, a sleeve or a guide ring.

8. The grinding tool for orthopedic surgery according to claim 3, characterized in that: The drill bit support (14) is a bearing or a guide sleeve.

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