Recovery forceps for blood vessels

Abstract

The utility model discloses a recovery clamp for blood vessels, which relates to the technical field of medical instruments, and comprises a handle plate, an adjusting mechanism for adjusting the length of the recovery clamp is arranged outside the handle plate, the adjusting mechanism comprises a grip arranged outside the handle plate, a sliding block is arranged above the grip, and one side, close to the sliding block, of the handle plate is fixedly connected with a base plate. A pull rod is slidably connected to the side, close to the sliding block, of the base plate, a certain friction force exists between the sliding block and the pull rod, an air cylinder is fixedly connected to the side, away from the base plate, of the pull rod, the grip rotates to enable the pull rod to slide in the sliding block, the grip is rotated to drive the sliding block and the pull rod to move, and then the positions of the air cylinder and the transmission rod are adjusted. By means of the design, the tedious process that forceps of different specifications need to be replaced due to the fact that the length of traditional recovery forceps is fixed is avoided, the operation efficiency and safety are improved, the clamping force is more stable, and the physical strength of medical staff is saved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a retrieval clamp for blood vessels. Background Technology

[0002] Blood vessels are a series of tubes through which blood flows. They are distributed throughout the human body, almost ubiquitous except for the cornea, hair, nails, tooth enamel, and epithelium. Based on their structure and function, blood vessels are mainly divided into three types: arteries, veins, and capillaries. Intravascular retrieval forceps are medical devices used to treat vascular diseases, primarily in endovascular surgery or interventional treatments. Inserted into the patient's blood vessel, they assist doctors in retrieving blockages or foreign objects. The working principle of the intravascular retrieval forceps is to use a bending and stretching mechanism to introduce them into the blood vessel, and then to grasp and retrieve the material within the vessel by closing and releasing the forceps. Under X-ray monitoring, the doctor precisely controls the grasping action of the foreign object using a control handle to grasp and retrieve the blockage or foreign object from the blood vessel.

[0003] In the prior art, the retrieval forceps used for blood vessels need to be replaced with retrieval forceps of different lengths and sizes when used in different scenarios. The length of the retrieval forceps is fixed and cannot be adjusted according to the actual location of the blood vessels in the patient. The process of replacing the retrieval forceps is time-consuming and may increase the risk and complexity of the surgery. Therefore, a retrieval forceps for blood vessels is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where retrieval forceps for blood vessels require replacement with different lengths and sizes in different scenarios, the length of the retrieval forceps is fixed and cannot be adjusted according to the actual location of the patient's blood vessels, and the process of replacing the retrieval forceps is time-consuming, which may increase the risk and complexity of the surgery. Therefore, this invention proposes a retrieval forceps for blood vessels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A blood vessel retrieval forceps includes a handle plate, an adjustment mechanism for adjusting the length of the retrieval forceps is provided on the outside of the handle plate, the adjustment mechanism includes a grip provided on the outside of the handle plate, a slider is provided above the grip, a base plate is fixedly connected to the side of the handle plate near the slider, a pull rod is slidably connected to the side of the base plate near the slider, there is a certain friction between the slider and the pull rod, a cylinder is fixedly connected to the side of the pull rod away from the base plate, and the rotation of the grip causes the pull rod to slide inside the slider;

[0007] The cylinder has a transmission rod at its output end, and a clamping mechanism for intravascular coagulation is provided on the side of the transmission rod away from the cylinder. The clamping mechanism includes a base disposed outside the transmission rod.

[0008] The above technical solution further includes:

[0009] The handle plate and the grip are rotatably connected, and the grip will rotate around one end of the handle plate as the center point.

[0010] The substrate and the slider are fixedly connected. A first spring is provided on the side of the slider away from the handle. The first spring is fixedly connected to the substrate. The first spring can use elastic potential energy to help the slider reset.

[0011] A protective arc plate is fixedly connected to the side of the base plate, and the protective arc plate is slidably connected to the cylinder.

[0012] The cylinder can slide on the inner wall of the protective arc plate to ensure the stability of the adjustment mechanism during operation.

[0013] A cylinder is provided on the side of the transmission rod near the base, and the cylinder is fixedly connected to the base and the cylinder is fixedly connected to the cylinder.

[0014] A coupling is fixedly connected to the side of the transmission rod near the base. A multi-axis base is fixedly connected to the side of the coupling away from the transmission rod. A connecting plate is rotatably connected to the side of the multi-axis base. A jaw is rotatably connected to the side of the connecting plate away from the multi-axis base. The coupling is slidably connected to the base. The jaw is rotatably connected to the base.

[0015] A second spring is fixedly connected to the side of the substrate away from the slider, and a limit plate is fixedly connected to the side of the pull rod near the second spring.

[0016] A pull ring is fixedly connected to the side of the pull rod near the limiting plate.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, the length of the retrieval forceps can be flexibly adjusted through the design of the adjustment mechanism. Doctors can adjust the position of the cylinder and transmission rod by rotating the handle to move the slider and pull rod according to the actual blood vessel position and surgical needs of the patient, and finally change the position of the clamping mechanism in the blood vessel. This design avoids the cumbersome process of changing different specifications of clamps due to the fixed length of traditional retrieval forceps, and improves surgical efficiency and safety.

[0019] 2. In this utility model, the clamping mechanism adopts a cylinder-driven transmission rod and connecting shaft, and drives the clamping claws to perform clamping operations through a multi-axis base and connecting plate. This design makes the clamping force of the clamping claws more stable, and can better adapt to blood vessel blockages or foreign objects of different shapes and sizes, improving the accuracy and success rate of the operation. Compared with manual clamping by rotation, the clamping force is more stable and saves the physical strength of medical staff.

[0020] 3. This utility model has the characteristics of adjustable length and stable clamping, so it is suitable for a variety of vascular interventional surgery scenarios, such as thrombus removal and endovascular stent implantation. This wide applicability makes this utility model an indispensable and important tool in vascular interventional surgery. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a blood vessel retrieval forceps proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0023] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B.

[0025] In the diagram: 1. Handle plate; 2. Grip; 3. Base plate; 4. Slider; 5. Pull rod; 6. First spring; 7. Protective arc plate; 8. Cylinder; 9. Transmission rod; 10. Cylinder; 11. Base; 12. Coupling; 13. Multi-axis base; 14. Connecting plate; 15. Claw; 16. Second spring; 17. Limiting plate; 18. Pull ring. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] like Figures 1-4As shown, the present invention proposes a blood vessel retrieval forceps, including a handle plate 1. An adjustment mechanism for adjusting the length of the retrieval forceps is provided on the outside of the handle plate 1. The adjustment mechanism includes a handle 2 provided on the outside of the handle plate 1. A slider 4 is provided above the handle 2. A base plate 3 is fixedly connected to the side of the handle plate 1 near the slider 4. A pull rod 5 is slidably connected to the side of the base plate 3 near the slider 4. There is a certain friction between the slider 4 and the pull rod 5. A cylinder 8 is fixedly connected to the side of the pull rod 5 away from the base plate 3. Rotation of the handle 2 causes the pull rod 5 to slide inside the slider 4.

[0029] The output end of the cylinder 8 is provided with a transmission rod 9, and a clamping mechanism for blood vessels is provided on the side of the transmission rod 9 away from the cylinder 8. The clamping mechanism includes a base 11 provided outside the transmission rod 9.

[0030] The handle plate 1 and the grip 2 are rotatably connected, and the grip 2 will rotate around one end of the handle plate 1 as the center point;

[0031] The substrate 3 is fixedly connected to the slider 4. A first spring 6 is provided on the side of the slider 4 away from the handle 2. The first spring 6 is fixedly connected to the substrate 3. The first spring 6 can use elastic potential energy to help the slider 4 to reset.

[0032] A coupling 12 is fixedly connected to the side of the transmission rod 9 near the base 11. A multi-axis base 13 is fixedly connected to the side of the coupling 12 away from the transmission rod 9. A connecting plate 14 is rotatably connected to the side of the multi-axis base 13. A jaw 15 is rotatably connected to the side of the connecting plate 14 away from the multi-axis base 13. The coupling 12 is slidably connected to the base 11, and the jaw 15 is rotatably connected to the base 11.

[0033] In this embodiment, the adjustment mechanism external to the handle plate 1 is activated. The operator holds the handle plate 1 and pulls the handle 2, which is rotatably connected to the end of the handle plate 1, causing the handle 2 to rotate around the handle plate 1. A slider 4 is located on the other end of the handle 2, with a protrusion. When the handle 2 rotates, the protrusion strikes the outside of the slider 4, causing the slider 4 to move. A pull rod 5 is slidably connected inside the slider 4. Due to friction between the slider 4 and the pull rod 5, the movement of the slider 4 uses this friction to drive the pull rod 5 to move. The cylinder 8, which is fixedly connected to the other side, starts to move. A first spring 6 is fixedly connected between the slider 4 and the base plate 3. When the slider 4 moves, it compresses the first spring 6 and gives the first spring 6 elastic potential energy. After the slider 4 drives the pull rod 5 a certain distance, the first spring 6 will use its elastic potential energy to make the slider 4 return to its original position, thereby achieving adjustment of the distance in stages. When the cylinder 8 moves, it drives the transmission rod 9 set at its output end to move. When the transmission rod 9 moves, it drives the clamping mechanism to move, completing the length adjustment operation of the recycling clamp.

[0034] When the external clamping mechanism of the transmission rod 9 is activated, the cylinder 8 starts to control the extension and retraction of the transmission rod 9. When the transmission rod 9 moves, it drives the connecting shaft 12 at its other end to move. The connecting shaft 12 begins to slide inside the base 11. When the connecting shaft 12 slides, it drives the multi-axis base 13, which is fixedly connected to its other side, to move. When the multi-axis base 13 moves, it drives the connecting plate 14, which is rotatably connected to its side, to move. Since the other end of the connecting plate 14 is rotatably connected to the jaws 15, the connecting plate 14 moves and rotates between the jaws 15 and the multi-axis base 13. The connecting plate 14 drives the jaws 15 to rotate outside the base 11. The jaws 15 are provided in multiple sets. The rotation of multiple sets of jaws 15 clamps the blockage or foreign objects in the blood vessel. Compared with manual clamping, the clamping force is more stable.

[0035] Example 2

[0036] like Figures 1-4 As shown, based on Embodiment 1, a protective arc plate 7 is fixedly connected to the side of the substrate 3, and the protective arc plate 7 is slidably connected to the cylinder 8.

[0037] A cylinder 10 is provided on the side of the transmission rod 9 near the base 11. The cylinder 10 is fixedly connected to the base 11 and the cylinder 10 is fixedly connected to the cylinder 8.

[0038] A second spring 16 is fixedly connected to the side of the substrate 3 away from the slider 4, and a limit plate 17 is fixedly connected to the side of the pull rod 5 close to the second spring 16.

[0039] A pull ring 18 is fixedly connected to the side of the pull rod 5 near the limiting plate 17.

[0040] In this embodiment, a cylinder 10 is fixedly connected between the base 11 and the cylinder 8. The transmission rod 9 is located inside the cylinder 10 and mainly serves to protect the transmission rod 9. A second spring 16 is fixedly connected to the side of the base plate 3 near the slider 4. A limit plate 17 is fixedly connected to the other side of the second spring 16. When the pull rod 5 moves to a certain position, the pull rod 5 will drive the limit plate 17 to compress the second spring 16, so that the pull rod 5 can no longer move, thus playing a limiting role. A pull ring 18 is fixedly connected to the end of the pull rod 5 near the limit plate 17. Pulling the pull ring 18 can make the pull rod 5 slide inside the base plate 3, which is convenient for the staff to adjust the length of the device.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retrieval forceps for blood vessels, comprising a handle plate (1), characterized in that, The handle plate (1) is provided with an adjustment mechanism for adjusting the length of the retrieval clamp. The adjustment mechanism includes a handle (2) provided on the outside of the handle plate (1). A slider (4) is provided above the handle (2). A base plate (3) is fixedly connected to the side of the handle plate (1) near the slider (4). A pull rod (5) is slidably connected to the side of the base plate (3) near the slider (4). There is a certain friction between the slider (4) and the pull rod (5). A cylinder (8) is fixedly connected to the side of the pull rod (5) away from the base plate (3). The handle (2) rotates so that the pull rod (5) slides inside the slider (4). The output end of the cylinder (8) is provided with a transmission rod (9), and a clamping mechanism for blood vessels is provided on the side of the transmission rod (9) away from the cylinder (8). The clamping mechanism includes a base (11) provided outside the transmission rod (9).

2. The retrieval forceps for blood vessels according to claim 1, characterized in that, The handle plate (1) and the grip (2) are rotatably connected, and the grip (2) will rotate around one end of the handle plate (1) as the center point.

3. A retrieval clamp for blood vessels according to claim 1, characterized in that, The substrate (3) is fixedly connected to the slider (4). A first spring (6) is provided on the side of the slider (4) away from the handle (2). The first spring (6) is fixedly connected to the substrate (3). The first spring (6) can use elastic potential energy to help the slider (4) reset.

4. A retrieval forceps for blood vessels according to claim 1, characterized in that, A protective arc plate (7) is fixedly connected to the side of the substrate (3), and the protective arc plate (7) is slidably connected to the cylinder (8).

5. A retrieval forceps for blood vessels according to claim 1, characterized in that, A cylinder (10) is provided on the side of the transmission rod (9) near the base (11). The cylinder (10) is fixedly connected to the base (11) and the cylinder (8).

6. A retrieval clamp for blood vessels according to claim 1, characterized in that, A coupling (12) is fixedly connected to the side of the transmission rod (9) near the base (11). A multi-axis base (13) is fixedly connected to the side of the coupling (12) away from the transmission rod (9). A connecting plate (14) is rotatably connected to the side of the multi-axis base (13). A jaw (15) is rotatably connected to the side of the connecting plate (14) away from the multi-axis base (13). The coupling (12) is slidably connected to the base (11), and the jaw (15) is rotatably connected to the base (11).

7. A retrieval clamp for blood vessels according to claim 1, characterized in that, A second spring (16) is fixedly connected to the side of the base plate (3) away from the slider (4), and a limit plate (17) is fixedly connected to the side of the pull rod (5) close to the second spring (16).

8. A retrieval forceps for blood vessels according to claim 7, characterized in that, A pull ring (18) is fixedly connected to the side of the pull rod (5) near the limiting plate (17).

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