An inflatable clamp-type vascular occlusion device

Abstract

This invention relates to the field of intraoperative vascular occlusion devices, and particularly to an inflatable clamp-type vascular occlusion device, which mainly includes: a first band body having a first connecting end and a first connecting end, wherein the first band body also has a first end face with a plurality of first bladders arranged at intervals on the first end face; a second band body having a second connecting end and a second connecting end, the second connecting end being connected to the first connecting end and the second connecting end being detachably connected to the first connecting end, so that the first band body and the second band body can form a closed pattern around the blood vessel; the second band body also has a second end face with a plurality of second bladders arranged at intervals on the second end face; the first bladders and the second bladders have a contracted state and an expanded state, and when the first bladders and the second bladders change from the contracted state to the expanded state, the first band body and the second band body deform, causing each of the first bladders and the second bladders to expand towards the blood vessel to compress the blood vessel and thus occlude the blood vessel.

Description

Technical Field

[0001] This invention relates to the field of intraoperative vascular occlusion devices, and more particularly to an inflatable clamp-type vascular occlusion device. Background Technology

[0002] Temporary vascular occlusion is widely used in various surgical procedures, such as liver resection, kidney resection, and other common surgeries. Vascular occlusion can reduce bleeding during organ resection, and the occlusion of vascular branches can help determine the boundaries of organ resection. Therefore, vascular occlusion is a very important technical component.

[0003] In addition, with the development of minimally invasive endoscopic technology, more and more open surgeries can be performed through laparoscopic surgery. This includes a series of complex surgeries such as liver resection, nephrectomy, and lung resection, which have been successfully performed laparoscopically. These complex laparoscopic surgeries have higher requirements for blood loss control.

[0004] Conventional methods of vascular occlusion involve directly clamping blood vessels with metal clamps or clips. However, this method can easily damage the vessel wall, leading to postoperative thrombosis. Therefore, in clinical practice, flexible balloons are also used to circumferentially occlude blood vessels. For example, Chinese Patent Application No. 202311211629.6 discloses a vascular occlusion device and method, which includes "an inflatable balloon, a tubing unit, and at least one occlusion unit connected in sequence. The occlusion unit includes a first balloon and a second balloon connected in sequence. The end of the first balloon is provided with a buckle, and the end of the second balloon is provided with a buckle strap. The buckle and the buckle strap engage." In use, the occlusion unit is wrapped around the periphery of the blood vessel, the buckle strap is inserted into the buckle and engages with the buckle, and the inflatable balloon is pressed. Gas enters the occlusion unit through the tubing unit, and the first and second balloons inflate and occlude the blood vessel.

[0005] The technical solution disclosed in this patent involves using two airbags, a first airbag and a second airbag, to compress and block the blood vessel. However, in this configuration, the surface of the airbag is curved when it expands, while the surface of the blood vessel is relatively smooth. As a result, the blood vessel will slide between the two airbags to the end position. Therefore, the first airbag and the second airbag need to expand to a sufficiently large size to contact the upper and lower surfaces of the blood vessel and provide uniform pressure in order to completely seal the blood vessel. This results in the instrument occupying a large area in the surgical area and exerting a large pressure on the surrounding tissues. Summary of the Invention

[0006] To address the aforementioned issues, this application discloses an inflatable clamping vascular occlusion device. During use, it can restrict the blood vessel to be blocked, preventing displacement and avoiding incomplete closure of the blocked vessel. Furthermore, while occupying the blood vessel, it can also reduce the space occupied in the surgical area and the compression of the surrounding tissues.

[0007] To achieve the above objectives, this application adopts the following technical solution, which includes:

[0008] A first belt body, the first belt body having a first joining end and a first connecting end, wherein the first belt body also has a first end face, and a plurality of first bladders are arranged at intervals on the first end face;

[0009] The second band has a second joining end and a second connecting end. The second joining end is connected to the first joining end, and the second connecting end is detachably connected to the first connecting end, so that the first band and the second band can form a closed pattern around the blood vessel. The second band also has a second end face opposite to the first end face, and several second cysts are arranged at intervals on the second end face.

[0010] The first cyst and the second cyst have a contracted state and an expanded state. After the first band and the second band form a closed pattern around the blood vessel, when the first cyst and the second cyst change from the contracted state to the expanded state, the first band and the second band deform, causing each of the first cyst and the second cyst to expand towards the blood vessel to compress the blood vessel and block it.

[0011] In one illustrative embodiment of an inflatable clamp-on vascular occlusion device, the first capsule and the second capsule are arranged in a linear array along the length extension direction of the band.

[0012] In one illustrative embodiment of an inflatable clamp-on vascular occlusion device,

[0013] The first belt body also has a first mounting end face opposite to the first end face;

[0014] The second belt body also has a second mounting end face opposite to the second end face;

[0015] The pneumatic clamp-on vascular occlusion device also includes:

[0016] The main branch pipeline has an input end and an output end;

[0017] The first secondary branch pipe is arranged on the first installation end face, wherein each of the first bladders is connected to the first secondary branch pipe.

[0018] The second auxiliary branch pipe is arranged on the second installation end face, wherein each of the second bladders is connected to the second auxiliary branch pipe;

[0019] Both the first and second secondary branch pipes are connected to the output end of the main branch pipe.

[0020] In one illustrative embodiment of an inflatable clamp-on vascular occlusion device, a first one-way valve is further provided in the input end of the main branch line.

[0021] In one illustrative embodiment of an inflatable clamp-on vascular occlusion device, the inflatable clamp-on vascular occlusion device further includes: an elastic balloon, the elastic balloon having an output interface and an input interface, the output interface being connected to the input end of the main branch tubing;

[0022] The input interface is equipped with a second one-way valve. When the elastic balloon is in an inflated state and a compressed state, positive pressure is generated inside the elastic balloon when the elastic balloon changes from the inflated state to the compressed state, so that the first one-way valve can be opened. The elastic balloon fills each of the first balloons and each of the second balloons with air, so that the first balloons and the second balloons change from the contracted state to the inflated state.

[0023] When transitioning from the compressed state to the expanded state, the first one-way valve closes, and under the action of elasticity, a negative pressure is generated inside the elastic bladder, causing the second one-way valve to flow. Air enters the elastic bladder through the input interface, causing the elastic bladder to transition from the compressed state to the expanded state.

[0024] In one illustrative embodiment of an inflatable clamping vascular blocking device, the first connecting end is provided with an elastic locking member, wherein the elastic locking member has a through locking hole.

[0025] The second connecting end is provided with a flexible locking band that can be inserted into the locking hole. The flexible locking band is provided with a plurality of locking blocks arranged at intervals. When the flexible locking band is inserted into the locking hole, the locking blocks abut against the locking hole, causing the locking hole to expand elastically. After one locking block passes through the locking hole, the locking hole returns to its original position under elastic action, so that the first band and the second band form the closed shape.

[0026] In one illustrative embodiment of an inflatable clamping vascular blocking device, a plurality of locking blocks are arranged in an array along the length extension direction of the flexible locking band.

[0027] In one illustrative embodiment of an inflatable clamping vascular occlusion device, the locking hole is a rectangular hole, and the cross-section of the locking block is trapezoidal in the length extension direction perpendicular to the flexible locking band, and the length and width of the locking block are greater than the length and width of the rectangular hole.

[0028] In one illustrative embodiment of an inflatable clamping vascular occlusion device, the locking hole is a circular hole, and in the length extension direction perpendicular to the flexible locking band, the cross-section of the locking block is circular, and the diameter of the locking block is larger than the diameter of the circular hole.

[0029] The following description, in a clear and easy-to-understand manner and with reference to the accompanying drawings, will further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of an inflatable clamp-on vascular occlusion device. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 A schematic diagram illustrating a possible embodiment of an inflatable clamp-on vascular occlusion device.

[0032] Figure 2 A schematic diagram illustrating one embodiment of the first and second belts.

[0033] Figure 3 This is a schematic diagram illustrating the structure in which the first and second bands form a closed pattern around the blood vessel.

[0034] Figure 4 This is a schematic diagram illustrating the structure by which the first and second cysts block blood vessels.

[0035] Figure 5 This is a schematic diagram illustrating the structure of the main branch pipeline and the first secondary branch pipeline.

[0036] Figure 6 This is used to illustrate the cross-sectional diagrams of the first and second branch pipes.

[0037] Figure 7 This is a schematic diagram illustrating the internal structure of the main branch pipeline inlet.

[0038] Figure 8 This is a schematic diagram illustrating the structure of an elastic balloon.

[0039] Figure 9This diagram illustrates the connection between the elastic balloon and the main branch pipeline.

[0040] Figure 10 This is a schematic diagram illustrating a possible embodiment of the elastic locking element and the flexible locking band.

[0041] Figure 11 This diagram illustrates the structure after the elastic locking element and the flexible locking band are connected.

[0042] Label Explanation

[0043] 1. First belt body; 11. First connecting end; 12. First connecting end; 13. First bladder body; 14. First secondary branch line; 15. Elastic locking element; 151. Locking hole; 2. Second belt body; 21. Second connecting end; 22. Second connecting end; 23. Second bladder body; 24. Second secondary branch line; 25. Flexible locking belt; 251. Locking block; 3. Main branch line; 31. Input end; 311. First one-way valve; 32. Output end; 4. Elastic bladder body; 41. Elastic balloon; 42. Output interface; 421. Second one-way valve; 43. Input interface; 5. Blood vessel; Detailed Implementation

[0044] To provide a clearer understanding of the technical features, objectives, and effects of this application, specific embodiments of this application are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0045] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0046] To keep the drawings concise, only the parts relevant to this application are shown schematically in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled.

[0047] like Figure 1As shown in Figure 3, the inflatable clamp-type vascular occlusion device includes: a first band 1 and a second band 2. Both the first band 1 and the second band 2 are flexible bands. The first band 1 has a first connecting end 11 and a first connecting end 12, and the second band 2 has a second connecting end 21 and a second connecting end 22. The second connecting end 21 is connected to the first connecting end 11 in an integral connection, and the second connecting end 22 is detachably connected to the first connecting end 12, so that the first band 1 and the second band 2 can form a closed pattern around the blood vessel. In use, one of the first band 1 and the second band 2 is positioned above the blood vessel to be blocked, and the other is positioned below the blood vessel to be blocked. Then, the first connecting end 12 of the first band 1 and the second connecting end 22 of the second band 2 are connected. At this time, the first band 1 and the second band 2 form a closed pattern around the blood vessel.

[0048] refer to Figure 2 , 3 The side of the first belt 1 facing the second belt 2 is defined as the first end face, and the side of the second belt 2 corresponding to the first end face is defined as the second end face. The first end face has several spaced-apart first bladders 13, and the second end face also has several spaced-apart first bladders 13. Each first bladder 13 and second bladder 23 has both a contracted state and an expanded state. (The last sentence appears to be incomplete and possibly refers to a different context.) Figure 2 , 3 4. After the first band 1 and the second band 2 form a closed pattern around the blood vessel, when each of the first cysts 13 and the second cysts 23 transitions from a contracted state to an expanded state, due to the expansion of each of the first cysts 13 and the second cysts 23 and the presence of the blood vessel, the first cyst 13 near the first joint end 11 on the first end face and the second cyst 23 near the second joint end 21 on the second end face, as well as the first cyst 13 near the first connecting end 12 on the first end face and the second cyst 23 near the second connecting end 22 on the second end face, firstly squeeze together, causing... As the distance between the first band 1 and the second band 2 increases, and the first connecting end 12 is connected to the second connecting end 22, the first band 1 and the second band 2 gradually develop an arc. At this time, the first cysts 13 and the second cysts 23 interact with each other and converge towards the center point of the closed shape formed by the first band 1 and the second band 2, so as to restrict the blood vessels between the first cysts 13 and the second cysts 23, and prevent the blood vessels from sliding to the position of the first connecting end 12 or the first joint end 11, thereby avoiding the problem of incomplete closure of blood vessels.

[0049] At the same time, as each of the first cysts 13 and the second cysts 23 expands, it gradually applies force to the outer wall of the blood vessel to form a flexible clamping state, causing the blood vessel to gradually close. When each of the first cysts 13 comes into contact with the outer surface of the corresponding second cyst 23, the blood vessel is completely blocked.

[0050] On the other hand, the first capsule 13 and the second capsule 23 are arranged at intervals, so that the first capsule 13 near the first joint end 11 on the first end face and the second capsule 23 near the second joint end 21 on the second end face, as well as the first capsule 13 near the first connecting end 12 on the first end face and the second capsule 23 near the second connecting end 22 on the second end face, require a smaller expansion volume, while the first capsule 13 near the middle position of the first belt 1 and the second capsule 23 near the middle position of the second belt 2 require a larger expansion volume, thereby reducing the ineffective expansion space (i.e. the expansion part that does not directly act on the blood vessel). In this way, when each of the first capsules 13 and the second capsules 23 is in the expanded state, the overall volume of the device is reduced accordingly, thereby reducing the space occupied in the surgical area and the pressure on the tissues around the blood vessel.

[0051] As will be understood by those skilled in the art, both the first band 1 and the second band 2 are flexible bands. Therefore, this device can be used to block blood vessels in open surgery and also in laparoscopic surgery. Specifically, in laparoscopic surgery, the first band 1 and the second band 2 are inserted into the patient's body through a laparoscopic trocar. Using surgical forceps, the blood vessel to be blocked is placed between the first band 1 and the second band 2, and the first connecting end 12 and the second connecting end 22 are connected. By changing the contracted state of each of the first sacs 13 and the second sacs 23 to the expanded state, the blood vessel is blocked.

[0052] Alternatively, the first connecting end 12 and the second connecting end 22 of the belt are provided with bending portions, wherein the bending portions are formed by pressing the belt after bending it, and the belt is divided into an upper layer and a lower layer in the thickness direction of the belt. The side of the upper layer facing the lower layer is the first end face, and the side of the lower layer facing the upper layer is the second end face. Several first pockets 13 are arranged at intervals on the first end face, and several second pockets 23 are arranged at intervals on the second end face.

[0053] refer to Figure 2 More specifically, several first capsules 13 are arranged in a straight array along the length of the first belt 1, and similarly, several second capsules 23 are arranged in a straight line along the length of the second belt 2, and the number of first capsules 13 is the same as the number of second capsules 23.

[0054] As will be understood by those skilled in the art, the first bladder 13 and the second bladder 23 are either air bladders or water bladders. When the first bladder 13 and the second bladder 23 are air bladders, air or inert gas can be filled into the first bladder 13 and the second bladder 23 so that each of the first bladder 13 and the second bladder 23 changes from a contracted state to an inflated state.

[0055] When the first sac 13 and the second sac 23 are water sacs, physiological saline can be filled into the first sac 13 and the second sac 23 so that each of the first sac 13 and the second sac 23 changes from a contracted state to an expanded state.

[0056] To achieve the filling of gas or liquid into the first capsule 13 and the second capsule 23, refer to Figure 5 , 6 The pneumatic clamp-type vascular occlusion device also includes: a main branch line 3, a first auxiliary branch line 14 and a second auxiliary branch line 24, wherein the main branch line 3 has an input end 31 and an output end 32.

[0057] refer to Figure 6 The first belt body 1 also has a first mounting end face opposite to the first end face, and the first secondary branch pipe 14 is arranged on the first mounting end face. Each first bladder 13 is connected to the first secondary branch pipe 14, and each first bladder 13 and the first secondary branch pipe 14 are in a parallel connection state.

[0058] The second belt body 2 also has a second mounting end face opposite to the second end face, and the second auxiliary branch pipe 24 is arranged on the second mounting end face. Each second bladder 23 is connected to the second auxiliary branch pipe 24, and each second bladder 23 and the second auxiliary branch pipe 24 are in a parallel connection state.

[0059] Both the first auxiliary branch line 14 and the second auxiliary branch line 24 are connected to the output end 32 of the main branch line 3. In this configuration, gas or liquid is simultaneously injected into each cyst through the input end 31 of the main branch line 3 after passing through the first and second auxiliary branches. Furthermore, by setting the first cysts 13 and the first auxiliary branch line 14 in parallel connection, and setting the second cysts 23 and the second auxiliary branch line 24 in parallel connection, the pressure of each first cyst 13 and the second cyst 23 is balanced, and each first cyst 13 and the second cyst 23 adheres evenly to the surface of the blood vessel, further reducing ineffective expansion space. In the expanded state, the overall volume of the device is smaller, thus better protecting the surrounding tissues. For illustrative purposes, when this device is used in laparoscopic surgery, the input end 31 of the main branch line 3 is located outside the patient's body, connected to an external fluid or gas filling device.

[0060] refer to Figure 7The main branch pipeline 3 is also equipped with a first one-way valve 311 at its input end 31. The first one-way valve 311 allows liquid or gas to flow from the input end 31 to the output end 32. In use, when liquid or gas is injected into each of the first bladders 13 and the second bladders 23 through the main branch pipeline 3, the first one-way valve 311 at the input end 31 is opened to allow gas or liquid to be filled into each of the first bladders 13 and the second bladders 23. When the filling of liquid or gas into each of the first bladders 13 and the second bladders 23 is stopped, the first one-way valve 311 at the input end 31 closes so that each of the first bladders 13 and the second bladders 23 is always in an inflated state.

[0061] As will be understood by those skilled in the art, the first band 1 and the second band 2 are for single use only. After the surgery, the first band 1 and the second band 2 can be cut directly to stop the blockage of blood vessels.

[0062] refer to Figure 8 , 9 In this embodiment, both the first balloon 13 and the second balloon 23 are air balloons. The inflatable clamp-on vascular occlusion device also includes an elastic balloon 41, which has an output interface 42 and an input interface 43. The output interface 42 is plugged into the input end 31 of the main branch tube 3. The input interface 43 is provided with a second one-way valve 421. The elastic balloon 41 is inflated under normal conditions. When force is applied to the elastic balloon 41, the elastic balloon 41 deforms, and positive pressure is generated inside the elastic balloon 41 to open the first one-way valve 311 of the input end 31, so that the air in the elastic balloon 41 is input into the main branch tube through the output interface 42. The fluid is then injected into each of the first sacs 13 and the second sacs 23, causing them to change from a contracted state to an expanded state. At this time, the elastic balloon 41 is in a compressed state. After the force is stopped on the elastic balloon 41, a negative pressure is generated inside the elastic balloon 41 under the action of elasticity. The second one-way valve 421 opens under the action of negative pressure, and air is drawn into the elastic balloon 41 through the input port 43, causing the elastic balloon 41 to return to an expanded state. By repeatedly applying force to the elastic balloon 41, each of the first sacs 13 and the second sacs 23 continuously expands until the blood vessel is blocked.

[0063] Specifically, the elastic balloon 41 is made of one of rubber, silicone, or latex, preferably rubber. The elastic balloon 41 made of this material has good elasticity. After force is applied to it, it can quickly recover to the inflated state by its own elasticity, thereby increasing the speed at which air is injected into each of the first balloons 13 and the second balloons 23.

[0064] In addition, the output interface 42 is connected to the main branch tube 3 in a plug-in configuration, which allows the elastic balloon 41 to be reused. Specifically, when it is necessary to change the state of each first balloon 13 and second balloon 23 from a contracted state to an inflated state, the output interface 42 of the elastic balloon 41 is plugged into the main branch tube 3 to inflate each first balloon 13 and second balloon 23. After the blood vessel is blocked, the elastic balloon 41 is separated from the main branch tube 3 and the elastic balloon 41 is disinfected for future use.

[0065] refer to Figure 10 To achieve a closed pattern formed by the first band 1 and the second band 2 around the blood vessel, in this embodiment, the first connecting end 12 is provided with an elastic locking member 15, wherein the elastic locking member 15 has a through locking hole 151; the second connecting end 22 is provided with a flexible locking band 25 that can pass into the locking hole 151, wherein the flexible locking band 25 has three locking blocks 251 arranged at intervals. When the flexible locking band 25 passes into the locking hole 151, the locking blocks 251 abut against the locking hole 151, causing the locking hole 151 to expand elastically. After one locking block 251 passes through the locking hole 151, the locking hole 151 returns to its original shape under the elastic action, so that the first band 1 and the second band 2 form a closed pattern.

[0066] refer to Figure 10 , 11 In the direction perpendicular to the length of the flexible locking band 25, the cross-section of the locking block 251 is trapezoidal, and the locking hole 151 is rectangular. The width and length of the locking block 251 are greater than the width and length of the locking hole 151. When the locking block 251 passes through the locking hole 151, the bottom end face of the locking block 251 fits against the end face of the elastic locking member 15, preventing the locking block 251 from passing through the locking hole 151 in the opposite direction. This ensures that the first connecting end 12 and the second connecting end 22 remain connected, thereby achieving a closed pattern formed around the blood vessel by the first band 1 and the second band 2. As those skilled in the art will understand, the number of locking blocks 251 is not limited to three. The number of locking blocks 251 can be increased or decreased according to the actual application requirements.

[0067] More preferably, the end of the flexible locking band 25 away from the second connecting end 22 is not provided with a locking block 251, so that during the operation, the flexible locking band 25 can be more easily inserted into the locking hole 151.

[0068] Specifically, in the length extension direction of the flexible locking band 25, a number of locking blocks 251 are arranged in a linear array. In this arrangement, the more locking holes 151 pass through, the smaller the area of ​​the closed pattern formed by the first band 1 and the second band 2, so that the first band 1 and the second band 2 can be more widely used in blood vessels of different locations and diameters.

[0069] As will be understood by those skilled in the art, the cross-section of the locking block 251 can also be circular, and correspondingly, the locking hole 151 is a circular hole, and the diameter of the locking block 251 is larger than the diameter of the locking hole 151. In this way, when the locking block 251 passes through the locking hole 151, it elastically expands the locking hole 151 until one locking block 251 has completely passed through.

[0070] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0071] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of this application and are not intended to limit the scope of protection of this application. All equivalent implementations or modifications made without departing from the spirit of the art of this application, such as combinations, divisions or repetitions of features, should be included within the scope of protection of this application.

Claims

1. An inflatable clamp-type vascular occlusion device, characterized in that, It includes, A first belt body, the first belt body having a first joining end and a first connecting end, wherein the first belt body also has a first end face, and a plurality of first bladders are arranged at intervals on the first end face; The second band has a second joining end and a second connecting end. The second joining end is connected to the first joining end, and the second connecting end is detachably connected to the first connecting end, so that the first band and the second band can form a closed pattern around the blood vessel. The second band also has a second end face opposite to the first end face, and several second cysts are arranged at intervals on the second end face. In the length extension direction of the belt, both the first capsule and the second capsule are arranged in a linear array; The first and second cysts have contracted and expanded states. After the first and second bands form a closed pattern around the blood vessel, when the first and second cysts transition from the contracted state to the expanded state, the first cyst near the first joint end on the first end face and the second cyst near the second joint end on the second end face, as well as the first cyst near the first connection end on the first end face and the second cyst near the second connection end on the second end face, firstly squeeze together, increasing the distance between the first and second bands, causing deformation of the first and second bands. At this time, each of the first and second cysts converges towards the center point of the closed pattern formed by the first and second bands under their interaction, and each of the first and second cysts expands towards the blood vessel to confine the blood vessel between each of the first and second cysts and compress the blood vessel. When each of the first cysts abuts against the outer surface of the corresponding second cyst, the blood vessel is blocked.

2. The pneumatic clamping vascular occlusion device as described in claim 1, characterized in that, The first belt body also has a first mounting end face opposite to the first end face; The second belt body also has a second mounting end face opposite to the second end face; The pneumatic clamp-on vascular occlusion device also includes: The main branch pipeline has an input end and an output end; The first secondary branch pipe is arranged on the first installation end face, wherein each of the first bladders is connected to the first secondary branch pipe. The second auxiliary branch pipe is arranged on the second installation end face, wherein each of the second bladders is connected to the second auxiliary branch pipe; Both the first and second secondary branch pipes are connected to the output end of the main branch pipe.

3. The pneumatic clamping vascular occlusion device as described in claim 2, characterized in that, The main branch pipeline is also equipped with a first check valve at its inlet.

4. The pneumatic clamping vascular occlusion device as described in claim 3, characterized in that, The inflatable clamp-on vascular occlusion device further includes: an elastic balloon, the elastic balloon having an output interface and an input interface, the output interface being connected to the input end of the main branch tubing; The input interface is equipped with a second one-way valve. When the elastic balloon is in an inflated state and a compressed state, positive pressure is generated inside the elastic balloon when the elastic balloon changes from the inflated state to the compressed state, so that the first one-way valve can be opened. The elastic balloon fills each of the first balloons and each of the second balloons with air, so that the first balloons and the second balloons change from the contracted state to the inflated state. When transitioning from the compressed state to the expanded state, the first one-way valve closes, and under the action of elasticity, a negative pressure is generated inside the elastic bladder, causing the second one-way valve to flow. Air enters the elastic bladder through the input interface, causing the elastic bladder to transition from the compressed state to the expanded state.

5. The pneumatic clamping vascular occlusion device as described in claim 1, characterized in that, The first connecting end is provided with an elastic locking member, wherein the elastic locking member has a through locking hole; The second connecting end is provided with a flexible locking band that can be inserted into the locking hole. The flexible locking band is provided with a plurality of locking blocks arranged at intervals. When the flexible locking band is inserted into the locking hole, the locking blocks abut against the locking hole, causing the locking hole to expand elastically. After one locking block passes through the locking hole, the locking hole returns to its original position under elastic action, so that the first band and the second band form the closed shape.

6. The pneumatic clamping vascular occlusion device as described in claim 5, characterized in that, Along the length extension direction of the flexible locking band, a plurality of locking blocks are arranged in an array.

7. The pneumatic clamping vascular occlusion device as described in claim 5, characterized in that, The locking hole is a rectangular hole, and the cross-section of the locking block is trapezoidal in the length extension direction perpendicular to the flexible locking band.

8. The pneumatic clamping vascular occlusion device as described in claim 5, characterized in that, The locking hole is a circular hole. In the length extension direction perpendicular to the flexible locking band, the cross-section of the locking block is circular, and the diameter of the locking block is larger than the diameter of the circular hole.

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