Meniscus scalpel with safety protection

Abstract

The utility model belongs to the technical field of medical instruments, in particular to a meniscus scalpel with safety protection, which comprises a protective sleeve and a straight blade, the top end of the straight blade is provided with a bent tool bit, the protective sleeve is provided with a moving groove, an upper push plate is slidably mounted on the moving groove, the bottom end of the upper push plate is fixedly connected with a sliding block, and the sliding block is fixedly connected with the straight blade. A self-locking assembly is arranged on the other side of the upper push plate. The operation efficiency of the meniscus is improved by installing the bent tool bit, firstly, one end of the protective sleeve is fed into an operation area, the upper push plate is pushed to move in the moving groove, the upper push plate can synchronously push the bent tool bit to move out of the interior of the bent sleeve when moving, then the bent tool bit hooks the front foot of the meniscus and then pulls back backwards, and the protective sleeve is pushed to move out of the bent sleeve when moving. When the meniscus operation is carried out, the sharp blade on the bent cutter head can effectively cut off the meniscus, the protective sleeve covers the cutting edges on the two sides of the straight blade, the straight blade is prevented from accidentally injuring normal tissue, meanwhile, the portion needing to be cut off can be cut off, and the meniscus operation efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a meniscus surgical knife with safety protection. Background Technology

[0002] Meniscalp repair surgery is a widely accepted method in recent years, suitable for patients with intact and stable peripheral menisci and central damage. By removing the central damaged portion, the remaining portion is preserved at a distance of 6-8 mm from the periphery of the meniscus. The preserved portion is then reshaped into a near-normal meniscus. Methods include monoplasty, biplasty, and fragment resection. However, due to the limitations of the operating space and the difficulty in accurately judging the width of the remaining meniscus in the first two methods, fragment resection is now commonly used. This involves making an additional incision on the anteromedial side of the knee joint and removing the anterior portion of the meniscus with a scalpel. Then, the remaining portion is removed by biting off fragments. This method shortens the operation time, achieves good clinical results, and is a simple and easy new surgical procedure.

[0003] However, surgical resection can easily damage other tissues in the surgical entry area, especially when removing the lateral discoid meniscus. When using the anteromedial approach, the anterior cruciate ligament may be cut. Furthermore, since the scalpel is a straight blade, the tip needs to be lowered and pushed and pulled back and forth when cutting the anterior crus of the meniscus. Often, only the tip of the blade is treated, and cutting the middle and posterior parts of the blade can easily injure other tissues. Therefore, it is necessary to develop a meniscus scalpel with a safety guard to protect other tissues from accidental injury by the meniscus scalpel. Utility Model Content

[0004] The purpose of this invention is to provide a meniscus scalpel with safety protection to solve the technical problem mentioned in the background art that existing meniscus scalpels are prone to accidentally injuring other tissues of the patient during surgery.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a meniscus scalpel with safety protection, comprising a protective sleeve and a straight blade, wherein the straight blade is slidably installed inside the protective sleeve, the top end of the straight blade is provided with a curved blade head, the protective sleeve is provided with a moving groove, an upper push plate is slidably installed on the moving groove, a slider is fixedly connected to the bottom end of the upper push plate, and the slider is slidably installed inside the protective sleeve, a connecting component is provided on one side of the slider, and the straight blade is connected to the upper push plate through the connecting component, and a self-locking component is provided on the other side of the upper push plate.

[0006] Preferably, the connecting assembly includes a connecting plate, a protrusion, and a groove. The connecting plate is fixedly connected to one side of the slider, the protrusion is fixedly mounted on the connecting plate, and the groove is located at one end of the straight blade, with one end of the protrusion extending through the interior of the groove.

[0007] Preferably, the self-locking assembly includes a connecting block, a lower push plate, a lifting block, a limiting plate, a limiting head, and a limiting groove. The connecting block is slidably disposed on one side of the upper push plate, the lower push plate is fixedly installed on the other end of the connecting block, the lifting block is fixedly installed on the bottom end of the lower push plate, the limiting plate is fixedly installed on the other side of the slider, and a set of limiting plates are symmetrically arranged. The lifting block is engaged in the middle part of the symmetrical limiting plates, the limiting head is fixedly disposed on one side of the limiting plate, and the limiting groove is disposed on the inner wall of the protective sleeve.

[0008] Preferably, the upper push plate is provided with a sliding groove, and the connecting block is slidably installed in the sliding groove.

[0009] Preferably, the concave and convex portions of the curved blade head are provided with sharp blades, and the edges of the straight blade are also provided with sharp blades.

[0010] Preferably, the limiting plate has an irregular shape and is made of plastic.

[0011] Preferably, the top of the protective sleeve is provided with a bent sleeve, and the diameter of the bent sleeve is larger than the diameter of the protective sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model improves the surgical efficiency of meniscus surgery by installing a curved blade head. When performing meniscus cutting surgery on a patient, one end of the protective sleeve is first inserted into the surgical area. After reaching the anterior calf of the meniscus, the upper push plate is pushed to move within the moving groove. As the upper push plate moves, it simultaneously pushes the curved blade head out of the curved sleeve. Then, the self-locking component locks the position of the extended curved blade head, maintaining its stability during surgery. Then, the curved blade head hooks onto the anterior calf of the meniscus and is pulled back. The sharp blade on the curved blade head can effectively cut it off. The protective sleeve covers the two sides of the straight blade to prevent the straight blade from accidentally damaging normal tissue, while still allowing for effective removal of the desired area, further improving the efficiency of meniscus surgery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 A schematic diagram of the connection structure between the upper push plate and the lower push plate;

[0017] Figure 4 This is a schematic diagram of the limiting groove structure of this utility model.

[0018] In the diagram: 1. Protective sleeve; 2. Straight blade; 3. Curved blade head; 4. Curved head sleeve; 5. Upper push plate; 6. Slider; 7. Connecting plate; 8. Protrusion; 9. Groove; 10. Lower push plate; 11. Connecting block; 12. Slide groove; 13. Limiting plate; 14. Limiting head; 15. Lifting block; 16. Limiting groove; 17. Moving groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 - Figure 4 A meniscus scalpel with safety protection includes a protective sleeve 1 and a straight blade 2, with the straight blade 2 slidably mounted inside the protective sleeve 1. A curved blade head 3 is provided at the top of the straight blade 2. A moving groove 17 is provided on the protective sleeve 1, and an upper push plate 5 is slidably mounted on the moving groove 17. A slider 6 is fixedly connected to the bottom end of the upper push plate 5, and the slider 6 is slidably mounted inside the protective sleeve 1. A connecting component is provided on one side of the slider 6, and the straight blade 2 is connected to the upper push plate 5 through the connecting component. A self-locking component is provided on the other side of the upper push plate 5. Sharp blades are provided at both the concave and convex parts of the curved blade head 3, and sharp blades are also provided at the edge of the straight blade 2. The curved blade head 3 is used to improve the surgical efficiency of meniscus surgery. During the meniscus resection surgery, one end of the protective sleeve 1 is first inserted into the surgical area. After reaching the anterior calf of the meniscus, the upper push plate 5 is pushed to move within the moving groove 17. As the upper push plate 5 moves, it simultaneously pushes the curved blade head 3 out of the curved sleeve 4. Then, the self-locking component locks the extended curved blade head 3 in place, maintaining its stability during the surgery. The curved blade head 3 is then pulled back after hooking onto the anterior calf of the meniscus, and the sharp blade on the curved blade head 3 can effectively remove it. The protective sleeve 1 covers the two sides of the straight blade 2 to prevent the straight blade 2 from accidentally damaging normal tissue, while still allowing for effective removal of the desired area, further improving the efficiency of the meniscus surgery.

[0021] Please see Figure 2 and Figure 3The connecting assembly includes a connecting plate 7, a protrusion 8, and a groove 9. The connecting plate 7 is fixedly connected to one side of the slider 6. The protrusion 8 is fixedly installed on the connecting plate 7. The groove 9 is located at one end of the straight blade 2, and one end of the protrusion 8 extends through the interior of the groove 9. The straight blade 2 is engaged with the protrusion 8 through the groove 9, so that the straight blade 2 is connected to the upper push plate 5. The upper push plate 5 pushes the straight blade 2 to move within the protective sleeve 1.

[0022] Please see Figure 2 , Figure 3 and Figure 4 The self-locking assembly includes a connecting block 11, a lower push plate 10, a lifting block 15, a limiting plate 13, a limiting head 14, and a limiting groove 16. The connecting block 11 is slidably disposed on one side of the upper push plate 5, the lower push plate 10 is fixedly installed on the other end of the connecting block 11, the lifting block 15 is fixedly installed on the bottom end of the lower push plate 10, the limiting plate 13 is fixedly installed on the other side of the slider 6, and a set of limiting plates 13 are symmetrically arranged. The lifting block 15 is engaged in the middle part of the symmetrical limiting plates 13. The limiting head 14 is fixedly disposed on one side of the limiting plate 13, and the limiting groove 16 is disposed on the inner wall of the protective sleeve 1. The limiting plate 13 has an irregular shape design and is made of plastic (the plastic limiting plate 13 has good toughness and flexibility). The upper push plate 5 is provided with a sliding groove 12, and the connecting block 11 is slidably installed in the sliding groove 12. When locking the position of the pushed straight blade 2, the lower push plate 10 is first pushed down to move in the sliding groove 12 through the connecting block 11. When the lower push plate 10 moves, it will drive the lifting block 15 to move synchronously. The lifting block 15 will move to the lower part of the limiting plate 13, pushing the lower part of the limiting plate 13 to expand outward, so that the limiting head 14 is engaged in the limiting groove 16, thereby locking and limiting the position of the straight blade 2. When releasing the self-locking, simply push the lower push plate 10 upward to make the lifting block 15 move synchronously. At this time, the limiting plate 13 will return to its original state, and the limiting head 14 will move out of the limiting groove 16, thereby releasing the locking and limiting of the straight blade 2.

[0023] Please see Figure 1 The top of the protective sleeve 1 is provided with a bent sleeve 4, and the diameter of the bent sleeve 4 is larger than the diameter of the protective sleeve 1. After the straight blade 2 is put into the protective sleeve 1, the curved blade head 3 will also enter the bent sleeve 4 to store the bent sleeve 4.

[0024] The working principle is to improve the efficiency of meniscus surgery by using the curved blade head 3. When performing meniscus cutting surgery on a patient, one end of the protective sleeve 1 is first inserted into the surgical area. After reaching the anterior calf of the meniscus, the upper push plate 5 is pushed to move within the moving groove 17. When the upper push plate 5 moves, it simultaneously pushes the curved blade head 3 out of the inside of the curved sleeve 4. Then, the self-locking component locks the position of the extended curved blade head 3, maintaining the stability of the curved blade head 3 during surgery. Then, the curved blade head 3 hooks onto the anterior calf of the meniscus and is pulled back. The sharp blade on the curved blade head 3 can effectively cut it off. The protective sleeve 1 covers the two sides of the straight blade 2 to prevent the straight blade 2 from accidentally damaging normal tissue, while also allowing for effective removal of the desired area, further improving the efficiency of meniscus surgery.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A meniscus surgical scalpel with safety protection, characterized in that: It includes a protective sleeve (1) and a straight blade (2), and the straight blade (2) is slidably installed in the protective sleeve (1). The top of the straight blade (2) is provided with a curved head (3). The protective sleeve (1) is provided with a moving groove (17). An upper push plate (5) is slidably installed on the moving groove (17). A slider (6) is fixedly connected to the bottom end of the upper push plate (5), and the slider (6) is slidably installed in the protective sleeve (1). A connecting component is provided on one side of the slider (6), and the straight blade (2) is connected to the upper push plate (5) through the connecting component. A self-locking component is provided on the other side of the upper push plate (5).

2. The meniscus surgical scalpel with safety protection according to claim 1, characterized in that: The connecting assembly includes a connecting plate (7), a protrusion (8), and a groove (9). The connecting plate (7) is fixedly connected to one side of the slider (6). The protrusion (8) is fixedly installed on the connecting plate (7). The groove (9) is located at one end of the straight blade (2), and one end of the protrusion (8) extends through the interior of the groove (9).

3. A meniscus surgical scalpel with safety protection according to claim 1, characterized in that: The self-locking assembly includes a connecting block (11), a lower push plate (10), a lifting block (15), a limiting plate (13), a limiting head (14), and a limiting groove (16). The connecting block (11) is slidably disposed on one side of the upper push plate (5). The lower push plate (10) is fixedly installed on the other end of the connecting block (11). The lifting block (15) is fixedly installed on the bottom end of the lower push plate (10). The limiting plate (13) is fixedly installed on the other side of the slider (6), and a set of limiting plates (13) are symmetrically arranged. The lifting block (15) is engaged in the middle part of the symmetrical limiting plates (13). The limiting head (14) is fixedly disposed on one side of the limiting plate (13). The limiting groove (16) is disposed on the inner wall of the protective sleeve (1).

4. A meniscus surgical scalpel with safety protection according to claim 1, characterized in that: The upper push plate (5) is provided with a sliding groove (12), and the connecting block (11) is slidably installed in the sliding groove (12).

5. A meniscus surgical scalpel with safety protection according to claim 1, characterized in that: The curved blade head (3) has sharp blades on both its concave and convex parts, and the straight blade (2) also has sharp blades on its edge.

6. A meniscus surgical scalpel with safety protection according to claim 3, characterized in that: The limiting plate (13) has an irregular shape and is made of plastic.

7. A meniscus surgical scalpel with safety protection according to claim 1, characterized in that: The top of the protective sleeve (1) is provided with a bent sleeve (4), and the diameter of the bent sleeve (4) is larger than the diameter of the protective sleeve (1).

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