Blood vessel closer

Abstract

A blood vessel closer relates to the technical field of medical instruments and mainly structurally comprises an occluding umbrella (1), a fixing disc (2) and a connecting piece (3), the occluding umbrella (1) is of a concave disc structure with an upward opening, and the center of the occluding umbrella (1) is vertically and fixedly connected with the connecting piece (3) upwards; the fixing disc (2) is of a concave disc structure with a downward opening, a through hole is formed in the center of the fixing disc (2), the connecting piece (3) penetrates through the through hole, and the fixing disc (2) is installed on the connecting piece (3) in an up-down sliding mode. The utility model is clinically applied to the vascular interventional operation, and can adjust the fitting degree of the disc and the umbrella as required, thereby enhancing the hemostasis and plugging effects.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a blood vessel closure device. Background Art

[0002] With the rapid development of cardiovascular and cerebrovascular interventional surgery, interventional surgery has become more and more complicated, which means that the size of supporting equipment is also getting larger and larger, which requires the corresponding increase in the caliber of blood vessel puncture, which leads to the inability of traditional compression and current existing hemostasis methods to meet clinical needs. Vascular closure devices (i.e., occluders) are used to close the puncture points on the blood vessels after interventional surgery. The existing clinically used vascular closure devices are suture-type or closed-type. For example, ProGlide and Angio-Seal are widely used in clinical practice. The suture-type has strict requirements on the vascular puncture position, a long learning curve, and high requirements on operators. The closed-type model is single and cannot meet clinical needs. In addition, during clinical use, it was found that the probability of complications such as vascular stenosis, occlusion, and short-term postoperative collapse leading to bleeding (even causing hemorrhagic shock) is high. In addition, there are currently some occluders with disc umbrella structures, but they are mainly used in congenital heart disease. There is no such disc umbrella-type large blood vessel closure device in clinical practice. Utility Model Content

[0003] The utility model aims to provide a vascular closure device used in vascular intervention surgery, which can adjust the fit between the disc and the umbrella as needed to increase the hemostasis and blocking effect on the vascular puncture point.

[0004] In order to achieve the above objectives, the technical solution adopted by the utility model is: a vascular closure device, characterized in that it includes a sealing umbrella, a fixing plate, and a connecting piece, wherein:

[0005] The blocking umbrella is a concave disc structure with an opening upward, and a connecting piece is fixed vertically upward at the center of the blocking umbrella; the fixed disc is a concave disc structure with an opening downward, and a through hole is provided at the center of the fixing disc, through which the connecting piece passes, and the fixing disc can be slidably installed on the connecting piece up and down.

[0006] The blocking umbrella and the fixing plate are both made of the elastic woven grid structure plus the membrane structure of the prior art, which will not be described in detail here.

[0007] The working principle of the utility model is:

[0008] The lower part of the blocking umbrella is located in the blood vessel and is close to the inner wall of the blood vessel, and is used to block the inner opening of the blood vessel puncture to prevent blood from flowing out. The upper part of the fixing plate is located in the tissue outside the blood vessel, and is used to block the outer opening of the blood vessel puncture and play a fixing role. Since the fixing plate can be slidably installed on the connecting piece up and down, after the device is installed, the upper and lower positions of the fixing plate can be slidably adjusted as needed, thereby adjusting the fit between the fixing plate and the blocking umbrella.

[0009] The beneficial effects of the utility model are:

[0010] In clinical applications of vascular interventional surgery, the fit between the fixing plate and the occluding umbrella can be adjusted as needed to increase the hemostasis and occluding effects on the vascular puncture point.

[0011] Furthermore, the connecting member is a connecting rod, and a plurality of buckles inclined downward are fixedly connected along the rod portion.

[0012] In this way, after the blocking umbrella and the fixing plate are in place respectively, the fixing plate can be pushed down to tighten and fix, and the buckle on the connecting rod can clamp the fixing plate, so that the fitting degree between the fixing plate and the blocking umbrella is tighter and not easy to loosen.

[0013] Furthermore, the connecting piece is a connecting wire.

[0014] In this way, the fit between the blocking umbrella and the fixing plate can be adjusted by pulling the wire, that is, the pulling wire is knotted outside the fixing plate after being tightened, so as to prevent the blocking umbrella and the fixing plate from being separated again and play a fixing role. This method has a simple and reliable structure.

[0015] Furthermore, the lowest point of the concave shape of the blocking umbrella is at its center.

[0016] That is, the blocking umbrella is a concave disc structure with a symmetrical structure. This method has a simple structure and is easy to install.

[0017] Furthermore, the lowest point of the concave shape of the blocking umbrella deviates from its center.

[0018] In this way, the occluder has an asymmetric structure, that is, the slope of the lowest point of the concave shape is large, while the slope of the other side is small. When installing, the side with a small slope faces the direction of blood flow, which can reduce blood flow resistance, thereby reducing the impact of hemodynamics and blood cell damage.

[0019] Furthermore, the fixing disk is a concave disk structure, which is simple and reliable and can increase the fixing area of ​​the fixing disk.

[0020] However, when the fixing plate is designed as a circular plate structure, there will be a problem that the area of ​​foreign matter in the extravascular tissue is large, which may cause discomfort. Therefore, as another improvement, the fixing plate is a concave square plate structure to reduce the tissue contact area.

[0021] Furthermore, the outer wall around the fixing plate is fixedly connected with a plurality of barbs, which are used to prevent the fixing plate from being pulled into the blood vessel by the occluding umbrella, thereby increasing the stability of the fixing plate.

[0022] Furthermore, the barbs are inclined downward, that is, the barbs face the blood vessels, so that the barbs can hook the surrounding tissue between the fixing plate and the blood vessels, thereby increasing the fixation of the fixing plate.

[0023] However, with a structure in which the barbs are tilted downward, there is still a possibility that the barbs will pierce into blood vessels. Therefore, as another improvement, the barbs are tilted upward, so that the barbs can hook the surrounding tissues and increase fixation while avoiding the risk of puncturing blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the front view of Embodiment 1 of the utility model;

[0025] Figure 2 This is a top view of Embodiment 1 of the utility model;

[0026] Figure 3 This is the front view of Embodiment 2 of the present utility model;

[0027] Figure 4 This is a top view of Embodiment 2 of the utility model;

[0028] Figure 5 This is the front view of Embodiment 3 of the present utility model;

[0029] Figure 6 This is a top view of Embodiment 3 of the present utility model;

[0030] Figure 7 This is the front view of Embodiment 4 of the present utility model;

[0031] Figure 8 This is the front view of Embodiment 5 of the present utility model;

[0032] Fig. 9 This is the front view of Embodiment 6 of the present utility model;

[0033] Fig.10 This is a front view of Embodiment 7 of the present utility model;

[0034] Fig.11 This is the front view of Example 8 of the utility model. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0036] Example 1

[0037] Figures 1-2The first specific embodiment of the utility model is shown, a blood vessel closure device, including an occluding umbrella 1, a fixing plate 2, and a connecting piece 3, wherein: the occluding umbrella 1 is a concave disc structure with an opening upward, and the connecting piece 3 is fixedly connected vertically upward at the center of the occluding umbrella 1, and the lowest point of the concave shape of the occluding umbrella 1 is at the center; the fixing plate 2 is a concave disc structure with an opening downward, and has a through hole at the center, and the connecting piece 3 passes through the through hole, and the fixing plate 2 can be slidably installed on the connecting piece 3 up and down, and the connecting piece 3 is a connecting rod, and a plurality of buckles 31 inclined downward are fixedly connected along the rod portion.

[0038] Example 2

[0039] Figures 3-4 The second specific embodiment of the utility model is shown, a blood vessel closure device, including an occluding umbrella 1, a fixing plate 2, and a connecting piece 3, wherein: the occluding umbrella 1 is a concave disc structure with an opening upward, and the connecting piece 3 is fixedly connected vertically upward at the center of the occluding umbrella 1, and the lowest point of the concave shape of the occluding umbrella 1 is at the center; the fixing plate 2 is a concave disc structure with an opening downward, and has a through hole at the center, and the connecting piece 3 passes through the through hole, and the fixing plate 2 can be slidably installed on the connecting piece 3 up and down, and the connecting piece 3 is a connecting pull wire.

[0040] Example 3

[0041] Figures 5-6 The third specific embodiment of the utility model is shown, a blood vessel closure device, including an occluding umbrella 1, a fixing plate 2, and a connecting piece 3, wherein: the occluding umbrella 1 is a concave disc structure with an opening upward, and the connecting piece 3 is fixedly connected vertically upward at the center of the occluding umbrella 1, and the concave lowest point of the occluding umbrella 1 is at the center; the fixing plate 2 is a concave square plate structure with an opening downward, in this embodiment, the four side walls of the square plate are arranged vertically, that is, the elastic woven mesh frame of the fixing plate 2 is a cubic shape with an opening at the bottom, and then a film is applied to the mesh frame to form the fixing plate 2; the fixing plate 2 has a through hole in the center, and the connecting piece 3 passes through the through hole, and the fixing plate 2 can be slidably installed on the connecting piece 3 up and down, and the connecting piece 3 is a connecting rod, and a plurality of buckles 31 inclined downward are fixedly connected along the rod portion thereof, and a plurality of barbs 21 inclined downward are fixedly connected to the outer walls around the fixing plate 2, that is, the barbs 21 face the blood vessel.

[0042] Example 4

[0043] Figure 7 The fourth specific embodiment of the present invention is shown. The structure of this embodiment is basically the same as that of Example 3, with the only difference being that the barbs 21 on the outer wall around the fixing plate 2 are inclined upward.

[0044] Example 5

[0045] Figure 8A fifth specific embodiment of the utility model is shown, a blood vessel closure device, comprising an occluding umbrella 1, a fixing plate 2, and a connecting piece 3, wherein: the occluding umbrella 1 is a concave disc structure with an opening upward, and the connecting piece 3 is fixedly connected vertically upward at the center of the occluding umbrella 1, and the lowest point of the concave shape of the occluding umbrella 1 is at the center; the fixing plate 2 is a concave square disc structure with an opening downward, and the center of the fixing plate 2 has a through hole, and the connecting piece 3 passes through the through hole, and the fixing plate 2 can be slidably installed on the connecting piece 3 up and down, and the connecting piece 3 is a connecting pull line, and the outer wall of the fixing plate 2 is fixedly connected with a plurality of barbs 21 inclined downward, that is, the barbs 21 face the blood vessel.

[0046] Example 6

[0047] Fig. 9 The sixth specific embodiment of the present invention is shown. The structure of this embodiment is basically the same as that of Example 5, with the only difference being that the barbs 21 on the outer wall around the fixing plate 2 are inclined upward.

[0048] Example 7

[0049] Fig.10 The seventh specific embodiment of the utility model is shown, and the structure of this embodiment is basically the same as that of the embodiment 1, and the only difference is that the lowest point of the concave shape of the blocking umbrella 1 deviates from its center and is located on the right side of the center. In this way, the blocking umbrella 1 presents an asymmetric structure, that is, the slope on the right side of the lowest point of the concave shape is large, and the slope on the left side is small. Fig.10 The direction of the middle arrow is the direction of blood flow in the blood vessel. When installing, the left side of the occluding umbrella 1 with a small slope is facing the direction of blood flow.

[0050] Example 8

[0051] Fig.11 The eighth specific implementation mode of the present utility model is shown. The structure of this implementation mode is basically the same as that of Example 7, except that: the connecting member 3 is a connecting wire.

[0052] The above embodiments of the utility model are merely examples for explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes and modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the utility model are still within the scope of protection of the utility model.

Claims

1. A vascular closure device, characterized in that: It comprises a blocking umbrella (1), a fixing plate (2), and a connecting piece (3), wherein: The blocking umbrella (1) is a concave disc structure with an opening facing upward, and a connecting piece (3) is fixedly connected vertically upward at the center of the blocking umbrella (1); the fixing disc (2) is a concave disc structure with an opening facing downward, and a through hole is provided at the center of the fixing disc (2), and the connecting piece (3) passes through the through hole. The fixing disc (2) can be slidably mounted on the connecting piece (3) up and down.

2. A vascular closure device according to claim 1, characterized in that: The connecting member (3) is a connecting rod, and a plurality of buckles (31) inclined downward are fixedly connected and arranged along the rod portion.

3. The vascular closure device according to claim 1, characterized in that: The connecting piece (3) is a connecting pull wire.

4. The vascular closure device according to claim 1, characterized in that: The concave lowest point of the blocking umbrella (1) is at its center.

5. The vascular closure device according to claim 1, characterized in that: The concave lowest point of the blocking umbrella (1) deviates from its center.

6. The vascular closure device according to claim 1, characterized in that: The fixed disk (2) is a concave disk structure.

7. The vascular closure device according to claim 1, characterized in that: The fixed disk (2) is a concave square disk structure.

8. The vascular closure device according to claim 7, characterized in that: The outer wall around the fixed plate (2) is fixedly connected with a plurality of barbs (21).

9. The vascular closure device according to claim 8, characterized in that: The barbs (21) are inclined downward.

10. The vascular closure device according to claim 8, characterized in that: The barbs (21) are inclined upward.

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