Vascular clamp for internal arteriovenous fistula operation

Abstract

The vascular clamp for the internal arteriovenous fistula operation comprises an upper fixing frame, a lower fixing frame and a connecting rod, the end, away from the end connected with the lower fixing frame, of the upper fixing frame is fixedly connected with a first clamping arm, and the portion, located at one end of the lower fixing frame, of one side of the first clamping arm is fixedly connected with a second clamping arm; the first clamping arms and the second clamping arms are arranged in a staggered mode, the opposite sides of the ends, away from the upper fixing frame and the lower fixing frame, of the first clamping arms and the second clamping arms are fixedly connected with clamping bases correspondingly, and the interiors of the upper clamping base and the lower clamping base are movably connected with clamping blocks correspondingly. And a connecting ring is fixedly connected between the connected ends of the upper fixing frame and the lower fixing frame. According to the vascular clamp, the upper clamping block and the lower clamping block are attached to each other to clamp a blood vessel, the two clamping blocks rotate in the arc grooves in a sliding mode through the sliding blocks, when arteriovenous blood vessels are clamped, the vascular clamp can be rotated under the condition that the blood vessels are not rotated, and therefore the blood vessels are prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a vascular clamp for arteriovenous fistula surgery. Background Technology

[0002] Arteriovenous fistula (AVF) is a surgical procedure, often used in blood purification centers. It's a minor surgical procedure involving suturing an artery near the wrist in the forearm to a nearby vein, allowing arterial blood to flow through the anastomosed vein, thus creating an AVF. The AVF provides a sufficient blood supply for hemodialysis, ensuring the adequacy of the treatment. During the AVF procedure, clamps are used to bind the two ends of the closed cephalic vein.

[0003] However, some arteriovenous fistula surgeries use two separate vascular clips, which make it difficult to anastomose the artery and vein, hindering the procedure. Furthermore, when the clip obstructs the surgeon's view, rotating it can also rotate the blood vessel, potentially causing damage. Therefore, this method does not meet current needs. To address this, we propose a new vascular clip for arteriovenous fistula surgery. Utility Model Content

[0004] The purpose of this invention is to provide a vascular clamp for arteriovenous fistula surgery, in order to solve the problems mentioned in the background art, where the vascular clamps used in some arteriovenous fistula surgeries are two separate independent individuals that are not easy to anastomose the artery and vein, which is not conducive to the operation. Furthermore, when the vascular clamp obstructs the surgeon's view, the surgeon will rotate the vascular clamp, but at the same time, the blood vessel will also rotate, which may cause damage to the blood vessel.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vascular clamp for arteriovenous fistula surgery, comprising an upper fixation frame, a lower fixation frame, and a connecting rod. One end of the upper fixation frame and the lower fixation frame are connected at an incline. A first clamping arm is fixedly connected to the end of the upper fixation frame away from the lower fixation frame. A second clamping arm is fixedly connected to one side of the first clamping arm and the end located on the lower fixation frame. The first and second clamping arms are staggered. A clamping seat is fixedly connected to the end of the first and second clamping arms away from the upper and lower fixation frames and to the opposite side. A clamping block is movably connected inside both the upper and lower clamping seats. A connecting ring is fixedly connected between the ends of the upper and lower fixation frames, and the connecting ring is movably connected to the outer surface of the connecting rod.

[0006] Preferably, the upper and lower clamps are provided with arc grooves on the opposite sides of each other, and sliders are fixedly connected to the middle of the opposite sides of the upper and lower clamps, with the sliders slidably connected inside the arc grooves.

[0007] Preferably, the connecting ring has a movable groove inside the end away from the upper and lower fixed frames, and a pull rod that passes through the movable groove and extends to the outside of the connecting ring is movably connected inside the movable groove.

[0008] Preferably, a limiting plate is fixedly connected to one end of the pull rod inside the movable groove, and a spring is fixedly connected between one side of the limiting plate and one side of the inner wall of the movable groove, and the spring is wound around the outer surface of the pull rod.

[0009] Preferably, a limiting block is fixedly connected to the end of the limiting plate away from the pull rod, and the limiting block extends movably through to the outer side of the connecting ring, with the outer surface of the limiting block being inclined.

[0010] Preferably, the rear side of the connecting rod is provided with a plurality of limiting grooves at equal intervals, and one end of the limiting block extending through to the inner outer side of the connecting ring is inserted into the corresponding limiting groove, and the outer surface of the limiting block slides in contact with the outer side of the limiting groove.

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

[0012] 1. This utility model involves fitting a connecting ring onto the outer surface of a connecting rod, then pushing the connecting ring to slide along the outer surface of the connecting rod. The outer surface of the limiting block is inclined and slides in contact with the outer surface of the limiting groove. This allows the limiting block to push the limiting plate to compress the spring, causing the limiting block to move and retract into the movable groove. When the vascular clamp moves to the appropriate position, one end of the limiting block aligns with the corresponding limiting groove. Under the elastic push of the spring, the limiting block engages in the limiting groove, thus fixing the position of the vascular clamp. This allows for easy adjustment of the position between two vascular clamps based on adjacent arteries and veins.

[0013] 2. This utility model involves pinching the upper and lower fixing frames, which causes the first and second clamping arms to move away from each other, thereby causing the upper and lower clamping seats and clamping blocks to move away from each other. Then, the position of the blood vessel to be clamped is placed between the upper and lower clamping blocks. After releasing the pinching between the upper and lower fixing frames, the blood vessel can be clamped by the upper and lower clamping blocks fitting together. The two clamping blocks slide and rotate inside the arc groove through the slider. When clamping arterial and venous blood vessels, the blood vessel clamp can be rotated without rotating the blood vessel, thereby avoiding damage to the blood vessel. 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 side sectional view of the entire utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping seat and clamping block of this utility model;

[0017] Figure 4 This utility model Figure 2 A schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Upper fixed frame; 2. Lower fixed frame; 3. First clamping arm; 4. Second clamping arm; 5. Clamping seat; 501. Arc groove; 6. Clamping block; 7. Connecting ring; 701. Movable groove; 8. Connecting rod; 801. Limiting groove; 9. Slider; 10. Pull rod; 11. Limiting plate; 12. Limiting block; 13. Spring. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 The present invention provides an embodiment of a vascular clamp for arteriovenous fistula surgery, comprising an upper fixation frame 1, a lower fixation frame 2, and a connecting rod 8. One end of the upper fixation frame 1 and the lower fixation frame 2 are connected at an incline. A first clamping arm 3 is fixedly connected to the end of the upper fixation frame 1 away from the lower fixation frame 2. A second clamping arm 4 is fixedly connected to one side of the first clamping arm 3 and the end located at the lower fixation frame 2. The first clamping arm 3 and the second clamping arm 4 are staggered. A clamping seat 5 is fixedly connected to the end of the first clamping arm 3 and the second clamping arm 4 away from the upper fixation frame 1 and the lower fixation frame 2 and opposite sides. A clamping block 6 is movably connected inside the upper and lower clamping seats 5. A connecting ring 7 is fixedly connected between the ends of the upper fixation frame 1 and the lower fixation frame 2, and the connecting ring 7 is movably connected to the outer surface of the connecting rod 8.

[0021] A movable groove 701 is provided inside the end of the connecting ring 7 away from the upper fixed frame 1 and the lower fixed frame 2. A pull rod 10 is movably connected inside the movable groove 701 and extends to the outside of the connecting ring 7. A limit plate 11 is fixedly connected to one end of the pull rod 10 inside the movable groove 701. A spring 13 is fixedly connected between one side of the limit plate 11 and one side of the inner wall of the movable groove 701, and the spring 13 is wrapped around the outer surface of the pull rod 10. A limit block 12 is fixedly connected to one end of the limit plate 11 away from the pull rod 10, and the limit block 12 movably extends through to the outside of the inside of the connecting ring 7. The outer surface of the limit block 12 is set with an incline. Several limit grooves 801 are provided at equal intervals on the rear side of the connecting rod 8. One end of the limit block 12 extending through to the outside of the inside of the connecting ring 7 is inserted into the corresponding limit groove 801, and the outer surface of the limit block 12 slides in contact with the outer side of the limit groove 801.

[0022] By fitting the connecting ring 7 onto the outer surface of the connecting rod 8, and then pushing the connecting ring 7 to slide along the outer surface of the connecting rod 8, the outer surface of the limiting block 12 is inclined and slides in contact with the outer surface of the limiting groove 801. This allows the limiting block 12 to push the limiting plate 11 to compress the spring 13, and move the limiting block 12 to retract into the movable groove 701. When the vascular clamp moves to the appropriate position, when one end of the limiting block 12 aligns with the corresponding limiting groove 801, the elastic push of the spring 13 causes the limiting block 12 to engage in the limiting groove 801, thereby fixing the position of the vascular clamp and facilitating the adjustment of the position between the two vascular clamps according to the adjacent arteries and veins.

[0023] By squeezing the upper fixing frame 1 and the lower fixing frame 2, the first clamping arm 3 and the second clamping arm 4 are moved away from each other, which in turn moves the upper and lower clamping seats 5 and clamping blocks 6 away from each other. Then, the position of the blood vessel to be clamped is placed between the upper and lower clamping blocks 6. Then, the squeezing between the upper fixing frame 1 and the lower fixing frame 2 is released. At this time, the blood vessel can be clamped by the upper and lower clamping blocks 6 adhering to each other. The inner side of the upper and lower clamping seats 5 opposite each other is provided with an arc groove 501. The middle of the side of the upper and lower clamping blocks 6 away from each other is fixedly connected to a slider 9, and the slider 9 is slidably connected to the inside of the arc groove 501. The two clamping blocks 6 slide and rotate inside the arc groove 501 through the slider 9. When clamping arterial and venous blood vessels, the blood vessel clamp can be rotated without rotating the blood vessel, thereby avoiding damage to the blood vessel.

[0024] When using the vascular clamp in arteriovenous fistula surgery, the connecting ring 7 is sleeved on the outer surface of the connecting rod 8, and then the connecting ring 7 is pushed to slide along the outer surface of the connecting rod 8. The outer surface of the limiting block 12 is set at an angle and slides in contact with the outer surface of the limiting groove 801. This pushes the limiting block 12 to compress the limiting plate 11 and the spring 13, and causes the limiting block 12 to move and retract into the interior of the movable groove 701. When the vascular clamp moves to the appropriate position, when one end of the limiting block 12 aligns with the corresponding limiting groove 801, the elastic push of the spring 13 causes the limiting block 12 to engage in the limiting groove 801, thereby fixing the position of the vascular clamp and facilitating the adjustment of the position between the two vascular clamps according to the adjacent arteries and veins.

[0025] Furthermore, by pinching the upper fixing frame 1 and the lower fixing frame 2, the first clamping arm 3 and the second clamping arm 4 are moved away from each other, which in turn causes the upper and lower clamping seats 5 and clamping blocks 6 to move away from each other. Then, the position where the blood vessel needs to be clamped is placed between the upper and lower clamping blocks 6. Then, the pinching between the upper fixing frame 1 and the lower fixing frame 2 is released. At this time, the blood vessel can be clamped by the upper and lower clamping blocks 6 adhering to each other. The two clamping blocks 6 slide and rotate inside the arc groove 501 through the slider 9. When clamping arterial and venous blood vessels, the blood vessel clamp can be rotated without rotating the blood vessel, thereby avoiding damage to the blood vessel.

[0026] 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 vascular clamp for arteriovenous fistula surgery, comprising an upper fixation frame (1), a lower fixation frame (2), and a connecting rod (8), wherein one end of the upper fixation frame (1) and the lower fixation frame (2) are connected at an angle, characterized in that: The upper fixed frame (1) is fixedly connected to a first clamping arm (3) at the end away from the lower fixed frame (2). A second clamping arm (4) is fixedly connected to one side of the first clamping arm (3) and at the end of the lower fixed frame (2). The first clamping arm (3) and the second clamping arm (4) are staggered. The first clamping arm (3) and the second clamping arm (4) are fixedly connected to a clamping seat (5) at the ends away from the upper fixed frame (1) and the lower fixed frame (2) and on opposite sides. A clamping block (6) is movably connected inside the upper and lower clamping seats (5). A connecting ring (7) is fixedly connected between the ends of the upper fixed frame (1) and the lower fixed frame (2), and the connecting ring (7) is movably connected to the outer surface of the connecting rod (8).

2. The vascular clamp for arteriovenous fistula surgery according to claim 1, characterized in that: The upper and lower clamps (5) are provided with arc grooves (501) on the opposite side of each other. The upper and lower clamps (6) are fixedly connected with sliders (9) on the opposite side of each other, and the sliders (9) are slidably connected to the inside of the arc grooves (501).

3. The vascular clamp for arteriovenous fistula surgery according to claim 1, characterized in that: The connecting ring (7) has a movable groove (701) inside the end away from the upper fixed frame (1) and the lower fixed frame (2). A pull rod (10) that passes through the movable groove (701) and extends to the outside of the connecting ring (7) is movably connected inside the movable groove (701).

4. The vascular clamp for arteriovenous fistula surgery according to claim 3, characterized in that: One end of the pull rod (10) located inside the movable groove (701) is fixedly connected to a limiting plate (11). A spring (13) is fixedly connected between one side of the limiting plate (11) and one side of the inner wall of the movable groove (701), and the spring (13) is wrapped around the outer surface of the pull rod (10).

5. A vascular clamp for arteriovenous fistula surgery according to claim 4, characterized in that: The limiting plate (11) is fixedly connected to a limiting block (12) at one end away from the pull rod (10), and the limiting block (12) extends movably through to the outside of the connecting ring (7). The outer surface of the limiting block (12) is set with an inclined surface.

6. A vascular clamp for arteriovenous fistula surgery according to claim 5, characterized in that: The connecting rod (8) has several limiting grooves (801) evenly spaced on its rear side. The limiting block (12) extends through to one end of the connecting ring (7) and is inserted into the corresponding limiting groove (801). The outer surface of the limiting block (12) slides in contact with the outer side of the limiting groove (801).

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