Medical hook knife

Abstract

The utility model relates to the technical field of medical cutting tools, in particular to a medical hook knife which comprises a knife handle, a fixing mechanism is installed at the top of the knife handle, a ring body is installed on the surface of the fixing mechanism, a knife body main body is installed on the left side of the ring body, and a positioning mechanism is installed on the surface of the knife handle. The bottom of the surface of the knife handle is fixedly sleeved with an anti-skid handle, and the fixing mechanism comprises two short blocks. The pull block is pulled to drive the long rod to move, so that the upper end of the long rod is separated from an original clamping groove in the ring body, then the movable block moves, the second spring is stretched, the cutter body and the ring body are rotated, after adjustment is completed, the pull block is loosened, and the long rod is inserted into the clamping groove under the action of retraction of the second spring; therefore, the angle between the scalpel handle and the scalpel main body can be adjusted, the scalpel is suitable for various operation scenes, and flexibility and applicability are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical cutting tool technology, specifically a medical hook knife. Background Technology

[0002] A medical hook knife, also known as a hook knife or Hook knife, is a surgical instrument with a hook-shaped tip that allows for arbitrary changes in cutting direction. This design enables it to hook and separate the submucosa from different angles, thereby maintaining a good field of vision and avoiding damage to the deeper layers of the dissected surface, thus minimizing the risk of perforation.

[0003] A search revealed that the patent number is CN205548670U, entitled "Utility Model of a Medical Endoscope Hook Knife," which includes a hook knife body. Research and analysis revealed that although it has the advantage of preventing accidental cutting, it also has the following disadvantages to a certain extent.

[0004] For example, it is not suitable for many surgical scenarios, especially in surgeries that require precise tissue separation and cutting. Furthermore, the angle between the blade and the handle cannot be adjusted, making it difficult for the hook knife to adapt to tissue morphology and improve cutting accuracy. To solve these technical problems, we have designed a medical hook knife. Utility Model Content

[0005] The purpose of this invention is to provide a medical hook knife that is suitable for various surgical scenarios and is adjustable. It solves the problems of not being suitable for various surgical scenarios, especially in surgeries that require precise tissue separation and cutting, and the inability to adjust the angle between the blade and the handle, which prevents the hook knife from better adapting to tissue morphology during cutting.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a medical hook knife, including a handle, a fixing mechanism installed at the top of the handle, a ring body installed on the surface of the fixing mechanism, a blade body installed on the left side of the ring body, a positioning mechanism installed on the surface of the handle, the positioning mechanism including a long rod, both ends of the long rod slidingly passing through the surface of the handle, a movable block fixedly sleeved on the upper surface of the long rod, a second spring movably sleeved on the upper surface of the long rod, both ends of the second spring being fixedly connected to the top of the movable block and the top of the inner cavity of the handle, a pull block fixedly connected to the lower end of the long rod, and an anti-slip handle fixedly sleeved on the bottom of the surface of the handle.

[0007] Preferably, the fixing mechanism includes two short blocks, which are fixedly connected to the front and rear sides of the top of the handle, respectively. A locking rod is movably provided through one side of each of the two short blocks. A round block is fixedly connected to one end of the locking rod. A spring is movably sleeved on the surface of the locking rod. The two ends of the spring are fixedly connected to one side of the short block and the round block, respectively. The ring is movably sleeved on the surface of the locking rod away from the round block.

[0008] Preferably, the main body of the blade includes a blade body, a blade tip, and a blade edge. The right end of the blade body is fixedly connected to the surface of the ring body, the blade tip is located at the left end of the blade body, and the blade edge is located at the lower part of the blade body.

[0009] Preferably, the surface of the ring body is provided with a groove that matches the long rod, and the upper end of the long rod is chamfered.

[0010] Preferably, the blade is curved, and the surface of the ring is chamfered.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model has a reasonable design for the hook knife through the blade, tip, blade edge and handle. Doctors can easily control it during surgery and achieve precise operation. The blade edge is sharp, the cutting speed is fast and it is not easy to damage the surrounding tissue, thus reducing the surgical risk. It is suitable for a variety of surgical scenarios, and performs particularly well in surgeries that require precise separation and cutting of tissues.

[0013] 2. This utility model uses a pull block to move a long rod, causing its upper end to disengage from the original slot on the ring body. This, in turn, moves the movable block and stretches the second spring, rotating the blade body and the ring body. After adjustment, releasing the pull block allows the long rod to retract into the slot under the action of the second spring. This provides the advantage of being able to adjust the angle between the handle and the blade body, making it suitable for various surgical scenarios and improving flexibility and applicability.

[0014] 3. This utility model allows the locking rod to move by pulling the circular block and the spring to stretch, causing the locking rod to detach from the ring body. This allows the ring body and the main body of the blade to be removed. Then, other types of blades can be installed. The surface of the ring body contacts and presses against the surface of one end of the locking rod, causing the locking rod to move. When one end of the locking rod is aligned with the hole in the middle of the ring body, the spring retracts, causing the locking rod to insert into the ring body. This provides the advantage of easy blade replacement, improving the flexibility and practicality of the hook knife. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged diagram of A in the middle;

[0018] Figure 4 This is a three-dimensional schematic diagram of the ring body and fixing mechanism of this utility model.

[0019] In the diagram: 1. Handle; 2. Fixing mechanism; 21. Short block; 22. Locking rod; 23. Round block; 24. Spring 1; 3. Ring body; 4. Main body of the blade; 41. Blade; 42. Blade tip; 43. Blade edge; 5. Positioning mechanism; 51. Long rod; 52. Movable block; 53. Spring 2; 54. Pull block; 6. Anti-slip handle; 7. Locking groove. Detailed Implementation

[0020] Please see Figures 1-4 A medical hook knife includes a handle 1, a fixing mechanism 2 mounted on the top of the handle 1, a ring 3 mounted on the surface of the fixing mechanism 2, a blade body 4 mounted on the left side of the ring 3, and a positioning mechanism 5 mounted on the surface of the handle 1. The positioning mechanism 5 includes a long rod 51, both ends of which slide through the surface of the handle 1. A movable block 52 is fixedly sleeved on the upper surface of the long rod 51, and a spring 53 is movably sleeved on the upper surface of the long rod 51. By setting the spring 53, under the action of its elastic force, the upper end of the long rod 51 is positioned... The spring 53 is stably inserted into the slot 7 on the ring 3 to position the ring 3 and the blade body 4. The two ends of the spring 53 are fixedly connected to the top of the movable block 52 and the top of the inner cavity of the handle 1, respectively. The lower end of the long rod 51 is fixedly connected to the pull block 54. By setting the pull block 54, it is easy to move the long rod 51 by pulling it. The bottom of the surface of the handle 1 is fixedly fitted with an anti-slip handle 6. By setting the handle 1 and the anti-slip handle 6, it is convenient for doctors to adjust the grip according to the needs of the operation, so as to better control the cutting direction and force of the hook knife.

[0021] Please see Figure 1 , Figure 3 and Figure 4The fixing mechanism 2 includes two short blocks 21, which are fixedly connected to the front and rear sides of the top of the handle 1. A locking rod 22 is movably connected to one side of each of the two short blocks 21. A round block 23 is fixedly connected to one end of the locking rod 22. By setting the round block 23, the spring 24 is indirectly connected to the locking rod 22, so that the spring 24 can pull the locking rod 22. The spring 24 is movably sleeved on the surface of the locking rod 22. By setting the spring 24, the locking rod 22 is stably inserted into the ring body 3 under the action of its elastic force, and the ring body 3 is stably fixed. The two ends of the spring 24 are fixedly connected to one side of the short block 21 and the round block 23, respectively. The ring body 3 is movably sleeved on the surface of the locking rod 22 away from the round block 23.

[0022] Please see Figure 2 The main body of the blade 4 includes a blade 41, a blade tip 42, and a blade edge 43. The right end of the blade 41 is fixedly connected to the surface of the ring body 3. The blade tip 42 is located at the left end of the blade 41. By setting the blade tip 42 and the blade edge 43, the cutting is made sharper. The blade edge 43 is located at the lower part of the blade 41.

[0023] Please see Figure 1 and Figure 3 The surface of the ring 3 is provided with a slot 7 that is compatible with the long rod 51. By setting the slot 7, the upper end of the long rod 51 can be inserted into it, which can position and fix the ring 3. The upper end of the long rod 51 is chamfered.

[0024] Please see Figure 1 and Figure 3 The blade 41 has a curved design, which allows the hook knife to better adapt to the tissue morphology during cutting and improve cutting accuracy. The surface of the ring 3 is chamfered.

[0025] In use, pulling the pull block 54 moves the long rod 51, causing its upper end to disengage from the original slot 7 on the ring body 3. This moves the movable block 52 and stretches the second spring 53, rotating the blade body 4 and the ring body 3. After adjustment, releasing the pull block 54 allows the long rod 51 to retract into the slot 7 under the action of the second spring 53, enabling angle adjustment between the handle 1 and the blade body 4. Pulling the round block 23 moves the locking rod 22, stretching the first spring 24, disengaging the locking rod 22 from the ring body 3. The ring body 3 and the blade body 4 can then be removed, allowing the installation of other blade models. The surface of body 3 contacts and presses against the surface of one end of the locking rod 22, causing the locking rod 22 to move. When one end of the locking rod 22 is aligned with the hole in the middle of the ring body 3, the locking rod 22 is inserted into the ring body 3 under the action of the spring 24, which facilitates the replacement of the blade. The design of the hook knife is reasonable through the blade body 41, the blade tip 42, the blade edge 43 and the handle 1. Doctors can easily control it during surgery and achieve precise operation. The blade edge 43 is sharp, the cutting speed is fast, and it is not easy to damage the surrounding tissues, reducing the surgical risk. It is suitable for a variety of surgical scenarios, especially performing well in surgeries that require precise separation and cutting of tissues.

[0026] In summary, this medical hook knife, through the cooperation of the handle 1, fixing mechanism 2, ring body 3, blade body 4, positioning mechanism 5 and anti-slip handle 6, solves the problems of its unsuitability for various surgical scenarios, especially its poor performance in surgeries requiring precise tissue separation and cutting, and the inability to adjust the angle between the blade body and handle, which prevents the hook knife from better adapting to tissue morphology during cutting.

Claims

1. A medical hook knife comprising a handle (1), characterized in that: The top of the handle (1) is provided with a fixing mechanism (2), the surface of the fixing mechanism (2) is provided with a ring body (3), the left side of the ring body (3) is provided with a cutter body (4), the surface of the handle (1) is provided with a positioning mechanism (5), the positioning mechanism (5) comprises a long rod (51), both ends of the long rod (51) are slidably penetrated through the surface of the handle (1), the surface of the upper end of the long rod (51) is fixedly provided with a movable block (52), the surface of the upper end of the long rod (51) is movably provided with a spring (53), both ends of the spring (53) are fixedly connected with the top of the movable block (52) and the top of the inner cavity of the handle (1), and the lower end of the long rod (51) is fixedly connected with a pulling block (54), and the bottom of the surface of the handle (1) is fixedly provided with an anti-skid handle (6).

2. The medical curette according to claim 1, characterized in that: The fixing mechanism (2) comprises a short block (21), the number of the short block (21) is two, and the two short blocks (21) are fixedly connected to the front and rear sides of the top of the handle (1), one side of the two short blocks (21) is movably provided with a clamping rod (22), one end of the clamping rod (22) is fixedly connected with a circular block (23), the surface of the clamping rod (22) is movably provided with a spring (24), and both ends of the spring (24) are fixedly connected with one side of the short block (21) and the circular block (23). The ring body (3) is movably provided on the surface of the clamping rod (22) away from the circular block (23).

3. The medical curette according to claim 1, wherein: The cutter body (4) comprises a cutter body (41), a cutter tip (42) and a cutter edge (43), the right end of the cutter body (41) is fixedly connected with the surface of the ring body (3), the cutter tip (42) is arranged at the left end of the cutter body (41), and the cutter edge (43) is arranged at the lower part of the cutter body (41).

4. The medical curet of claim 1, wherein: The surface of the ring body (3) is provided with a clamping groove (7) matched with the long rod (51), and the upper end of the long rod (51) is chamfered.

5. The medical curette according to claim 3, wherein: The cutter body (41) is designed in a curved shape, and the surface of the ring body (3) is chamfered.

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