Vascular occlusion mechanism and occlusion device

Abstract

This invention provides a vascular occlusion mechanism and device, relating to the field of medical device technology. The vascular occlusion mechanism includes a first expansion ring, an expansion tube, and a second expansion ring. The first expansion ring has a first inner cavity with a pressure fluid inlet, and its inner circumference is provided with a first partition and a first through hole. The second expansion ring has a second inner cavity, and its inner circumference is provided with a second partition and a second through hole. The expansion tube includes a first expansion layer, a second expansion layer, and a support member. A first channel is formed within the inner circumference of the first expansion layer, and a second channel is formed between the first and second expansion layers. The first channel connects to both the first and second through holes, and the second channel connects to both the first and second inner cavities. This vascular occlusion mechanism allows for normal blood flow while simultaneously creating a protected area through which no blood flows. Even if the vessel wall adjacent to this protected area is damaged during surgery, bleeding will not occur, thus ensuring the patient's safety.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a blood vessel blocking mechanism and blocking device. Background Technology

[0002] Surgery near the aorta carries significant risks; even the slightest mistake can lead to massive bleeding, which is extremely difficult to control and can even be life-threatening. Therefore, surgery requires blocking the aorta to create a localized area without blood flow. While traditional clamps can achieve this, they present the problem of depriving distal organs of blood supply. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, one of the objectives of the present invention is to provide a blood vessel blocking mechanism.

[0004] This invention provides the following technical solution:

[0005] A blood vessel blocking mechanism includes a first expansion ring, an expansion tube, and a second expansion ring connected in sequence.

[0006] The first expansion ring has an annular first inner cavity, and a pressure fluid inlet communicating with the first inner cavity is provided on the first expansion ring. A first partition is provided on the inner circumference of the first expansion ring, and a first through hole is formed therein.

[0007] The second expansion ring has an annular second inner cavity, and the inner circumference of the second expansion ring is provided with a second partition and a second through hole is formed therein;

[0008] The expansion tube includes an annular first expansion layer, a second expansion layer surrounding the first expansion layer, and a support member connecting the first expansion layer and the second expansion layer respectively. A first channel is formed in the inner circumference of the first expansion layer, and a second channel is formed between the first expansion layer and the second expansion layer.

[0009] The first channel connects the first through hole and the second through hole, and the second channel connects the first inner cavity and the second inner cavity.

[0010] As a further optional embodiment of the blood vessel blocking mechanism, the inner circumference of the first expansion ring is provided with a first connector, the first connector having a third inner cavity communicating with the first inner cavity, and both the third inner cavity and the first inner cavity communicating with the second channel.

[0011] As a further alternative to the blood vessel blocking mechanism, the first separator is located on one side of the first connector, the first through hole is located on the other side of the first connector, and the pressure fluid inlet is disposed on the first connector.

[0012] As a further alternative to the blood vessel blocking mechanism, the inner circumference of the second expansion ring is provided with a second connector, the second connector having a fourth inner cavity communicating with the second inner cavity, and both the fourth inner cavity and the second inner cavity communicating with the second channel.

[0013] As a further alternative to the blood vessel blocking mechanism, the second separator is located on one side of the second connector, and the second through hole is located on the other side of the second connector.

[0014] As a further optional embodiment of the vascular blocking mechanism, the vascular blocking mechanism further includes a connecting tube, the connecting tube comprising a tube body and a connecting portion connected to each other, the end of the connecting portion away from the tube body being connected to the side of the first expansion ring opposite to the expansion tube, and the connecting portion having a third through hole and a third channel;

[0015] The third through hole connects to the first through hole, and the third channel connects the pipe body and the pressure fluid inlet.

[0016] As a further optional embodiment of the vascular blocking mechanism, the vascular blocking mechanism further includes a guide head, which includes a housing, a third partition, and a vortex collector.

[0017] The housing is tapered, and the bottom of the housing is connected to the side of the second expansion ring opposite to the expansion tube. Filter holes are provided on the wall of the housing.

[0018] The third partition is disposed inside the housing and divides the housing into a fifth inner cavity and a sixth inner cavity, the fifth inner cavity being in communication with the second through hole;

[0019] The vortex collector is disposed on the third partition, and the fifth inner cavity is connected to the sixth inner cavity through the vortex collector.

[0020] Another object of the present invention is to provide a blocking device.

[0021] This invention provides the following technical solution:

[0022] A blocking device includes a pressure mechanism and the aforementioned blood vessel blocking mechanism;

[0023] The pressure mechanism includes a fluid container, a pressure pump, and a valve. One end of the pressure pump is connected to the fluid container, and the other end of the pressure pump is connected to the pressure fluid inlet through the valve.

[0024] As a further alternative to the blocking device, the pressure mechanism further includes a pressure sensing unit disposed between the pressure pump and the fluid inlet, and electrically connected to the pressure pump and the valve.

[0025] As a further alternative to the blocking device, the fluid container is a liquid tank.

[0026] The embodiments of the present invention have the following beneficial effects:

[0027] When using the aforementioned vascular occlusion mechanism, the first expansion ring, expansion tube, and second expansion ring, connected sequentially, are placed into the blood vessel, and the expansion tube is aligned with the area to be operated on. Fluid is then injected into the pressure fluid inlet. After entering the first inner cavity through the pressure fluid inlet, the fluid further enters the second inner cavity through the second channel. With continuous fluid injection, the first expansion ring, expansion tube, and second expansion ring all expand. The expanded first and second expansion rings adhere tightly to the inner wall of the blood vessel, preventing blood from flowing between the first expansion ring and the blood vessel, or between the second expansion ring and the blood vessel; blood can only flow in or out through the first and second through holes. Furthermore, the second expansion layer forming the expansion tube expands outward, and the support pulls the first expansion layer outward, forming a stable first channel within the inner periphery of the first expansion layer. The first channel connects to the first and second through holes, allowing normal blood flow and ensuring blood supply to distal organs. Simultaneously, a blood-free zone is formed between the outer wall of the expansion tube and the first and second separators. Even if the blood vessel wall adjacent to this free zone is damaged during surgery, bleeding will not occur, ensuring the patient's safety.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This diagram illustrates the overall structure of a blood vessel blocking mechanism according to an embodiment of the present invention.

[0031] Figure 2 This diagram illustrates the structure of the first expansion ring in a blood vessel blocking mechanism according to an embodiment of the present invention.

[0032] Figure 3 This diagram illustrates the structure of the second expansion ring in a blood vessel blocking mechanism according to an embodiment of the present invention.

[0033] Figure 4 This diagram illustrates the structure of an expansion tube in a blood vessel blocking mechanism according to an embodiment of the present invention.

[0034] Figure 5 This diagram illustrates the structure of a connecting tube in a blood vessel blocking mechanism according to an embodiment of the present invention.

[0035] Figure 6 This diagram shows a schematic representation of the connecting tube in a blood vessel blocking mechanism provided by an embodiment of the present invention from another perspective.

[0036] Figure 7 This diagram illustrates the structure of a guide head in a blood vessel blocking mechanism according to an embodiment of the present invention.

[0037] Figure 8 This diagram illustrates the overall structure of a blocking device according to an embodiment of the present invention.

[0038] Figure 9 A schematic diagram of the working state of a blocking device provided in an embodiment of the present invention is shown.

[0039] Explanation of key component symbols:

[0040] 10-Blood vessel blocking mechanism; 20-Pressure mechanism; 21-Fluid container; 22-Pressure pump; 23-Valve; 24-Pressure sensing unit;

[0041] 100-First expansion ring; 110-First inner cavity; 120-Pressure fluid inlet; 130-First separator; 140-First through hole; 150-First connector; 151-Third inner cavity; 200-Expansion tube; 210-First expansion layer; 220-Second expansion layer; 230-Support member; 240-First channel; 250-Second channel; 300-Second expansion ring; 310-Second inner cavity; 320-Second separator; 330-Second through hole; 340-Second connector; 341-Fourth inner cavity; 400-Connecting tube; 410-Pipe body; 420-Connecting part; 421-Third through hole; 422-Third channel; 500-Guide head; 510-Housing shell; 511-Filter hole; 512-Fifth inner cavity; 513-Sixth inner cavity; 520-Third separator; 530-Vortex collector. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Example 1

[0048] Please see Figure 1 This embodiment provides a blood vessel blocking mechanism 10, which includes a first expansion ring 100, an expansion tube 200 and a second expansion ring 300, and the first expansion ring 100, the expansion tube 200 and the second expansion ring 300 are connected in sequence.

[0049] Please see Figure 2 Specifically, the first expansion ring 100 has an annular first inner cavity 110, and a pressure fluid inlet 120 communicating with the first inner cavity 110 is provided on the first expansion ring 100. The inner circumference of the first expansion ring 100 is provided with a first partition 130 and a first through hole 140 is formed therein.

[0050] Please see Figure 3 Similarly, the second expansion ring 300 has an annular second inner cavity 310, and the inner circumference of the second expansion ring 300 is provided with a second partition 320 and a second through hole 330 is formed.

[0051] Please see Figure 4 Accordingly, the expansion tube 200 includes a first expansion layer 210, a second expansion layer 220, and a support member 230. The first expansion layer 210 is arranged in a ring shape, the second expansion layer 220 is arranged around the first expansion layer 210, and the support member 230 connects the first expansion layer 210 and the second expansion layer 220 respectively.

[0052] At this time, a first channel 240 is formed in the inner circumference of the first expansion layer 210. One end of the first channel 240 is connected to the first through hole 140, and the other end is connected to the second through hole 330.

[0053] Furthermore, a second channel 250 is formed between the first expansion layer 210 and the second expansion layer 220. One end of the second channel 250 is connected to the first inner cavity 110, and the other end is connected to the second inner cavity 310.

[0054] When using the aforementioned vascular occlusion mechanism 10, the first expansion ring 100, expansion tube 200, and second expansion ring 300, connected sequentially, are placed into the blood vessel, and the expansion tube 200 is aligned with the area where surgery is to be performed. Then, fluid is injected into the pressure fluid inlet 120. After entering the first inner cavity 110 through the pressure fluid inlet 120, the fluid further enters the second inner cavity 310 through the second channel 250. With continuous fluid injection, the first expansion ring 100, expansion tube 200, and second expansion ring 300 all expand.

[0055] The expanded first expansion ring 100 and second expansion ring 300 adhere tightly to the inner wall of the blood vessel, preventing blood from flowing between the first expansion ring 100 and the blood vessel, or between the second expansion ring 300 and the blood vessel. Blood can only flow in or out through the first through-hole 140 and the second through-hole 330. Furthermore, the second expansion layer 220, which forms part of the expansion tube 200, expands outward, and the support member 230 pulls the first expansion layer 210 outward, forming a stable first channel 240 within the inner circumference of the first expansion layer 210. The first channel 240 connects to the first through-hole 140 and the second through-hole 330, allowing normal blood flow and ensuring blood supply to distal organs. Simultaneously, a blood-free zone is formed between the outer wall of the expansion tube 200 and the first separator 130 and the second separator 320. Even if the blood vessel wall adjacent to this zone is damaged during surgery, bleeding will not occur, ensuring the patient's safety.

[0056] Please refer to the following: Figure 2 and Figure 3 In this embodiment, both the first expansion ring 100 and the second expansion ring 300 are elliptical rings to adapt to the shape of blood vessels.

[0057] In particular, when the aforementioned vascular blocking mechanism 10 is applied to an artery, both the first expansion ring 100 and the second expansion ring 300 are circular rings.

[0058] In contrast, the cross-section of the expansion tube 200 is smaller than that of the first expansion ring 100 and the second expansion ring 300, so as to ensure that the expansion tube 200 will not fully adhere to the inner wall of the blood vessel after expansion, but will form the aforementioned clearance area.

[0059] The cross section refers to the section perpendicular to the arrangement direction of the first expansion ring 100, the expansion tube 200, and the second expansion ring 300.

[0060] Furthermore, while making the cross-section of the expansion tube 200 smaller than the cross-section of the first expansion ring 100 and the second expansion ring 300, at least a portion of the expansion tube 200 is not aligned with the first expansion ring 100 and the second expansion ring 300, and at least a portion of the second channel 250 is not directly connected to the first inner cavity 110 and the second inner cavity 310. To address this, a first connector 150 is provided on the inner circumference of the first expansion ring 100.

[0061] The first connector 150 has a third inner cavity 151 that communicates with the first inner cavity 110, and both the third inner cavity 151 and the first inner cavity 110 are communicated with the second channel 250.

[0062] In use, fluid enters the first inner cavity 110 through the pressure fluid inlet 120. A portion of the fluid flows directly into the second channel 250, while the other portion first flows into the third inner cavity 151 and then into the second channel 250.

[0063] Similarly, the inner circumference of the second expansion ring 300 is provided with a second connector 340. The second connector 340 has a fourth inner cavity 341 that communicates with the second inner cavity 310, and both the fourth inner cavity 341 and the second inner cavity 310 are in communication with the second channel 250.

[0064] In use, a portion of the fluid in the second channel 250 flows directly into the second inner cavity 310, while the other portion first flows into the fourth inner cavity 341 and then into the second inner cavity 310.

[0065] In this embodiment, the first connector 150 is strip-shaped, and both ends of the first connector 150 are connected to the first expansion ring 100. The first separator 130 is located on one side of the first connector 150, and the first through hole 140 is located on the other side of the first connector 150. In addition, a pressure fluid inlet 120 is provided on the first connector 150.

[0066] Similarly, the second connector 340 is also strip-shaped, and both ends of the second connector 340 are connected to the second expansion ring 300. The second separator 320 is located on one side of the second connector 340, and the second through hole 330 is located on the other side of the second connector 340.

[0067] At this time, both the first separator 130 and the second separator 320 are arc-shaped plate-like separators, and the cross-sections of the first through hole 140 and the second through hole 330 are arc-shaped. In addition, the cross-section of the expansion tube 200 is also arc-shaped.

[0068] In this embodiment, the first connector 150 and the portion of the first expansion ring 100 located on the other side of the first connector 150 together form the first through hole 140, and the first connector 150 and the portion of the first expansion ring 100 are simultaneously fitted into one end of the expansion tube 200 and fixed by means of gluing or welding.

[0069] Similarly, the second connector 340 and the portion of the second expansion ring 300 located on the other side of the second connector 340 together form the second through hole 330, and the second connector 340 and this portion of the second expansion ring 300 are simultaneously fitted into the other end of the expansion tube 200, and are also fixed by means of gluing or welding.

[0070] Please refer to it again. Figure 4 In this embodiment, three support members 230 are provided, dividing the second channel 250 into three cavities. Two of the support members 230 are opposite to the two ends of the first connector 150 and the second connector 340, and the other support member 230 is aligned with the middle part of the first expansion ring 100 located on the other side of the first connector 150, and also aligned with the middle part of the second expansion ring 300 located on the other side of the second connector 340.

[0071] In another embodiment of this application, the support member 230 may be one, two, four or more, and the position of the support member 230 is not limited.

[0072] Please refer to the following: Figure 1 and Figure 5 Furthermore, the aforementioned blood vessel blocking mechanism 10 also includes a connecting tube 400. The connecting tube 400 is located on the side of the first expansion ring 100 opposite to the expansion tube 200 and is connected to the first expansion ring 100 for introducing fluid into the first expansion ring 100.

[0073] Please combine Figure 6 Specifically, the connecting pipe 400 consists of a pipe body 410 and a connecting part 420 that are connected to each other.

[0074] The tube 410 is of sufficient length to extend along the blood vessel and exit the blood vessel at a suitable location to connect to an external fluid supply device.

[0075] The end of the connecting part 420 away from the tube body 410 is connected to the first expansion ring 100, and the connecting part 420 has a third through hole 421 and a third channel 422.

[0076] The third through hole 421 is connected to the first through hole 140, and the third channel 422 is connected to the pipe body 410 and the pressure fluid inlet 120 respectively.

[0077] During use, blood in the blood vessels flows sequentially through the third through-hole 421, the first through-hole 140, the first channel 240, and the second through-hole 330. An external fluid supply device supplies fluid into the pipe body 410, which flows along the pipe body 410 into the third channel 422, and then into the pressure fluid inlet 120.

[0078] In this embodiment, the connecting portion 420 is tapered to accommodate the dimensional changes between the tube body 410 and the first expansion ring 100.

[0079] Please refer to the following: Figure 1 and Figure 7 Furthermore, the aforementioned vascular blocking mechanism 10 also includes a guide head 500. The guide head 500 is located on the side of the second expansion ring 300 facing away from the expansion tube 200 and is connected to the second expansion ring 300, for guiding the entire vascular blocking mechanism 10 to pass smoothly through the blood vessel.

[0080] Specifically, the guide head 500 consists of a housing 510, a third partition 520, and a vortex collector 530.

[0081] The housing 510 is conical in shape, and its bottom is connected to the side of the second expansion ring 300 facing away from the expansion tube 200. The wall of the housing 510 is provided with filter holes 511 for filtering any blood clots that may be present in the blood.

[0082] The third partition 520 is disposed inside the housing 510 and is fixedly connected to the inner wall of the housing 510, dividing the space inside the housing 510 into a fifth inner cavity 512 and a sixth inner cavity 513. The fifth inner cavity 512 communicates with the second through hole 330, while the sixth inner cavity 513 is opposite to the second partition 320.

[0083] The vortex collector 530 is disposed on the third partition 520, and the fifth inner cavity 512 is connected to the sixth inner cavity 513 through the vortex collector 530.

[0084] During use, blood flows into the fifth inner cavity 512 through the second through hole 330. A portion of the blood flows directly out of the housing 510, while the other portion first flows into the sixth inner cavity 513 through the vortex collector 530, and then flows out of the housing 510.

[0085] As blood flows through the vortex collector 530, the vortex collector 530 guides the blood to form a vortex. Under the action of centrifugal force, the blood separates from the thrombus, and the thrombus is collected by the vortex collector 530 in the sixth inner cavity 513, ensuring that the blood can flow smoothly at least in the fifth inner cavity 512.

[0086] In summary, the aforementioned vascular occlusion mechanism 10 not only allows normal blood flow, ensuring blood supply to distal organs and reducing surgical risks, but also creates a blood-free clearance zone between the outer wall of the expansion tube 200, the first separator 130, and the second separator 320. Even if the vessel wall adjacent to this clearance zone is damaged during surgery, bleeding will not occur, thus ensuring the patient's safety.

[0087] In addition, a filter hole 511 is provided on the housing 510, which can filter thrombi caused by abnormal conditions. At the same time, the vortex collector 530 is used to further collect the thrombi, which can also reduce surgical risks and ensure the safety of patients' lives.

[0088] Example 2

[0089] Please refer to the following: Figure 8 and Figure 9 This embodiment provides a blocking device, specifically an aortic blood flow blocking device, which includes a pressure mechanism 20 and the aforementioned vascular blocking mechanism 10.

[0090] Specifically, the pressure mechanism 20 includes a fluid container 21, a pressure pump 22, and a valve 23.

[0091] One end of the pressure pump 22 is connected to the fluid container 21, and the other end of the pressure pump 22 is connected to the pipe body 410 through the valve 23, and then connected to the pressure fluid inlet 120.

[0092] In use, first open valve 23, then start pressure pump 22 to pump the fluid stored in fluid container 21 into pipe body 410. The fluid further flows into pressure fluid inlet 120, causing the first expansion ring 100, expansion tube 200, and second expansion ring 300 to expand until the first expansion ring 100 and second expansion ring 300 are tightly attached to the inner wall of the blood vessel. Then close valve 23 and pressure pump 22.

[0093] In this embodiment, the fluid container 21 is a liquid tank, and the fluid stored therein is a liquid, such as saline solution.

[0094] Compared to gases, liquids have negligible compressibility, which is beneficial for precisely controlling the expansion volume of the first expansion ring 100 and the second expansion ring 300, avoiding excessive expansion of the first expansion ring 100 and the second expansion ring 300 that could lead to vascular damage, thereby protecting vascular safety.

[0095] Furthermore, the pressure mechanism 20 also includes a pressure sensing unit 24. The pressure sensing unit 24 is disposed between the pressure pump 22 and the fluid inlet, and is electrically connected to the pressure pump 22 and the valve 23.

[0096] In use, the pressure sensing unit 24 can monitor the fluid pressure in the aforementioned blood vessel blocking mechanism 10. When the fluid pressure in the blood vessel blocking mechanism 10 reaches a preset threshold, the pressure sensing unit 24 controls the pressure pump 22 to stop working and simultaneously controls the valve 23 to close. When the fluid pressure in the blood vessel blocking mechanism 10 is lower than the preset threshold, the pressure sensing unit 24 controls the valve 23 to open and controls the pressure pump 22 to work, thereby maintaining the fluid pressure within the blood vessel blocking mechanism 10.

[0097] After the procedure, valve 23 must be opened, and then pressure pump 22 must be started to draw the fluid in the vascular occlusion mechanism 10 back into the fluid container 21, or into other recovery equipment. After the extraction is complete, pressure pump 22 and valve 23 must be closed, and then the vascular occlusion mechanism 10 must be slowly pulled out of the aorta.

[0098] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0099] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0100] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A vascular occlusion device, comprising: It includes a first expansion ring, an expansion tube, and a second expansion ring connected in sequence; The first expansion ring has an annular first inner cavity, and a pressure fluid inlet communicating with the first inner cavity is provided on the first expansion ring. A first partition is provided on the inner circumference of the first expansion ring, and a first through hole is formed therein. The second expansion ring has an annular second inner cavity, and the inner circumference of the second expansion ring is provided with a second partition and a second through hole is formed therein; The expansion tube includes an annular first expansion layer, a second expansion layer surrounding the first expansion layer, and a support member connecting the first expansion layer and the second expansion layer respectively. A first channel is formed in the inner circumference of the first expansion layer, and a second channel is formed between the first expansion layer and the second expansion layer. The first channel connects the first through hole and the second through hole respectively, and the second channel connects the first inner cavity and the second inner cavity respectively; The blood vessel blocking mechanism also includes a guide head, which comprises a housing, a third partition, and a vortex collecting component; The housing is tapered, and the bottom of the housing is connected to the side of the second expansion ring opposite to the expansion tube. Filter holes are provided on the wall of the housing. The third partition is disposed inside the housing and divides the housing into a fifth inner cavity and a sixth inner cavity, the fifth inner cavity being in communication with the second through hole; The vortex collector is disposed on the third partition, and the fifth inner cavity is connected to the sixth inner cavity through the vortex collector.

2. The vascular snubbing mechanism of claim 1, wherein, The inner circumference of the first expansion ring is provided with a first connector, the first connector having a third inner cavity communicating with the first inner cavity, and both the third inner cavity and the first inner cavity communicating with the second channel.

3. The blood vessel blocking mechanism according to claim 2, characterized in that, The first separator is located on one side of the first connector, the first through hole is located on the other side of the first connector, and the pressure fluid inlet is disposed on the first connector.

4. The blood vessel blocking mechanism according to claim 1, characterized in that, The inner circumference of the second expansion ring is provided with a second connector, the second connector having a fourth inner cavity communicating with the second inner cavity, and both the fourth inner cavity and the second inner cavity communicating with the second channel.

5. The blood vessel blocking mechanism according to claim 4, characterized in that, The second separator is located on one side of the second connector, and the second through hole is located on the other side of the second connector.

6. The vascular blocking mechanism according to any one of claims 1-5, characterized in that, The blood vessel blocking mechanism further includes a connecting tube, which includes a tube body and a connecting part connected to each other. The end of the connecting part away from the tube body is connected to the side of the first expansion ring opposite to the expansion tube. The connecting part has a third through hole and a third channel. The third through hole connects to the first through hole, and the third channel connects the pipe body and the pressure fluid inlet.

7. A blocking device, characterized in that, Includes a pressure mechanism and a vascular blocking mechanism as described in any one of claims 1-5; The pressure mechanism includes a fluid container, a pressure pump, and a valve. One end of the pressure pump is connected to the fluid container, and the other end of the pressure pump is connected to the pressure fluid inlet through the valve.

8. The blocking device according to claim 7, characterized in that, The pressure mechanism further includes a pressure sensing unit, which is disposed between the pressure pump and the pressure fluid inlet and is electrically connected to the pressure pump and the valve.

9. The blocking device according to claim 7, characterized in that, The fluid container is a liquid tank.

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