Tissue clamp for blood vessel

Abstract

The invention provides a tissue clamp for blood vessels, comprising: a clamping member, the clamping member comprising a clamping portion, the clamping portion enclosing to form a gap for clamping the blood vessels; the adjusting device is connected with the clamping part and is used for changing the shape of the clamping part; the adjusting device enables the clamping part to compress the gap so as to clamp a blood vessel; or the adjusting device enables the clamping part to expand the gap so as to loosen the blood vessel. The problem that the clamping force of the tissue clamp for the blood vessel cannot be adjusted is solved, and the operation difficulty of taking and placing the tissue clamp for the blood vessel is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a tissue clip for blood vessels. Background Art

[0002] Vascular tissue clips are commonly used instruments during surgery. They are used to clamp blood vessels, block blood flow, and facilitate observation of the vessel stump and anastomosis. The ideal clamping force should be able to block blood flow without falling off and without damaging the vascular endothelium. In routine use, the clamping force exceeds 30g / mm 2 It can cause damage to the endothelium of small blood vessels.

[0003] However, in actual use of the existing technology, common vascular tissue clamps are clamped by providing elastic force through a torsion spring structure. The magnitude of the clamping force is determined by the elastomer. When facing blood vessels of different positions and thicknesses, free adjustment cannot be achieved. In addition, during the removal and placement process, special application forceps are required, which makes removal and placement in the in vivo environment more difficult.

[0004] The information provided in this background technology section is only intended to enhance understanding of the overall background of the application and should not be considered as an admission or any form of suggestion that the information constitutes prior art already known to a person skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present application is to provide a vascular tissue clamp that solves the problem that the clamping force of the vascular tissue clamp cannot be adjusted and reduces the difficulty of taking and placing the vascular tissue clamp.

[0006] To achieve the above objectives, the present application provides a vascular tissue clip, comprising:

[0007] A clamping member, the clamping member comprising a clamping portion, the clamping portion enclosing a gap for clamping a blood vessel;

[0008] an adjusting device connected to the clamping portion and configured to change a shape of the clamping portion;

[0009] The adjusting device causes the clamping portion to compress the gap to clamp the blood vessel;

[0010] Or the adjusting device causes the clamping portion to expand the gap to loosen the blood vessel.

[0011] As a further improvement of the embodiment of the present application, the clamping portion includes:

[0012] The interior of the capsule is a hollow cavity, the regulating device is connected to the hollow cavity, and the regulating device is used to control the pressure in the hollow cavity to adjust the shape of the capsule.

[0013] As a further improvement of the embodiment of the present application, the clamping portion is an elastic clamping portion;

[0014] The clamping member further includes a rigid bracket connected to the elastic clamping portion, and the rigid bracket is partially arranged on a side of the clamping portion away from the gap.

[0015] As a further improvement of the embodiment of the present application, the capsule includes:

[0016] A first sub-sac body and a second sub-sac body, wherein the first sub-sac body and the second sub-sac body are arranged opposite to each other, and the gap is located between the first sub-sac body and the second sub-sac body.

[0017] As a further improvement of the embodiment of the present application, the first sub-capsule includes a first plane, the second sub-capsule includes a second plane, and the first plane and the second plane are arranged opposite to each other.

[0018] As a further improvement to the embodiment of the present application, the vascular tissue clip further includes:

[0019] A pressure-maintaining device is connected to the hollow cavity and is used to seal the hollow cavity so as to maintain a preset pressure in the hollow cavity.

[0020] As a further improvement of the embodiment of the present application, the pressure maintaining device includes:

[0021] A pressure sensor and a valve are located in the regulating device. The pressure sensor is used to detect the pressure in the regulating device, and the valve is used to control the opening and closing of the regulating device.

[0022] As a further improvement to the embodiment of the present application, the pressure maintaining device further includes:

[0023] A pressure-maintaining member, wherein a pipeline is provided inside the pressure-maintaining member, one end of the pipeline is connected to the clamping portion, the other end of the pipeline can be connected to the regulating device, and the other end of the pressure-maintaining member is detachably connected to the regulating device;

[0024] When the pressure-maintaining member is connected to the regulating device, the clamping portion, the pipeline and the regulating device are in communication;

[0025] When the pressure maintaining device is disconnected from the regulating device, the end of the pipeline away from the clamping portion is closed.

[0026] As a further improvement of the embodiment of the present application, the hollow cavity is filled with air;

[0027] The regulating device includes an air pressure regulating device, and the air pressure regulating device is used to inflate the hollow cavity or control the exhaust of the clamping portion.

[0028] As a further improvement of the embodiment of the present application, the hollow cavity is filled with liquid;

[0029] The regulating device includes a hydraulic regulating device, and the hydraulic regulating device is used to fill the hollow cavity with liquid, or control the clamping portion to discharge liquid.

[0030] Compared with the prior art, the vascular tissue clip according to the present application has the following advantages:

[0031] The adjustable and deformable clamping part clamps the blood vessel, and the clamping force on the vessel is changed by adjusting the shape of the clamping part. The clamping force of the tissue clamp can be freely adjusted by adjusting the adjustment device alone, ensuring blood vessel closure without damaging the vessel wall. At the same time, the clamp can be directly clamped and removed, improving the controllability of the vascular tissue clamp and simplifying the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 1 is a schematic structural diagram of a vascular tissue clip according to one embodiment of the present application;

[0033] Figure 2 is a partial structural schematic diagram of a vascular tissue clip according to one embodiment of the present application;

[0034] Figure 3 1 is a schematic structural diagram of a clamping member and a pressure-maintaining member according to an embodiment of the present application;

[0035] Figure 4 is another structural schematic diagram of a clamping member and a pressure-maintaining member according to an embodiment of the present application;

[0036] Figure 5 is a partial structural schematic diagram of a vascular tissue clip according to one embodiment of the present application;

[0037] Figure 6 It is a schematic structural diagram of a pressure sensor and a valve according to one embodiment of the present application.

[0038] Description of main reference numerals:

[0039] 1. Tissue clamp for blood vessels; 10. Clamping part; 110. First sub-sac; 120. Second sub-sac; 130. Third sub-sac; 20. Rigid support; 30. Adjustment device; 310. Pump body; 410. Pressure sensor; 420. Valve; 430. Pressure retaining member; 431. Valve core. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] It should be noted that, to more clearly describe the vascular tissue clip, the term "front end" is defined herein to refer to the end facing the surgical tissue during the surgical procedure, and the term "rear end" refers to the end facing away from the surgical tissue during the surgical procedure. Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are intended solely to describe specific embodiments and are not intended to limit the present invention.

[0043] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0044] like Figure 1 and Figure 2 As shown, a tissue clamp 1 for a blood vessel according to an embodiment of the present application includes a clamping member and an adjusting device 30. The clamping member includes a clamping portion 10, which is arranged to form a gap for clamping a blood vessel. The adjusting device 30 is connected to the clamping portion 10 and is used to change the shape of the clamping portion 10. The adjusting device 30 causes the clamping portion 10 to compress the gap to clamp the blood vessel; or the adjusting device 30 causes the clamping portion 10 to expand the gap to loosen the blood vessel.

[0045] In this embodiment, a deformable clamping portion 10 is utilized to clamp and release a blood vessel. Specifically, an adjustment device 30 is used to adjust the shape of the clamping portion 10 and control the clamping force during clamping. The vascular tissue clamp 1 in this embodiment can flexibly adjust the clamping force based on different blood vessel types or clamping requirements, meeting the clamping requirements while protecting the vascular endothelium. Furthermore, simply adjusting the shape of the clamping portion 10 allows for clamping and releasing the blood vessel, significantly simplifying the surgical procedure and adapting to complex or confined clamping environments.

[0046] It should be noted that changing the shape of the clamping portion 10 refers to a change in the structural shape characteristics or dimensional characteristics of the clamping portion 10 itself.

[0047] For the convenience of description, according to the different forms formed by the clamping deformation, the shape of the preset clamping portion 10 has a first state and a second state. In the first state, Figure 3 The gap size is shown at a in the figure. The gap enclosed by the clamping portion 10 is larger than the diameter of the blood vessel, allowing the blood vessel to enter or exit the gap. When the blood vessel is located in the gap, the clamping portion 10 deforms from the first state to the second state. The gap is gradually compressed, and the clamping portion 10 clamps the blood vessel, with the clamping force on the blood vessel gradually increasing until the clamping force meets the preset requirements. When the clamping portion 10 deforms from the second state to the first state, the gap is gradually expanded, and the clamping force on the blood vessel gradually decreases until it returns to the first state, at which point the blood vessel can exit the gap.

[0048] In an embodiment of the present application, the clamping portion 10 includes a capsule, the interior of the capsule is a hollow cavity, the regulating device 30 is connected to the hollow cavity, and the regulating device 30 is used to control the pressure in the hollow cavity.

[0049] In this embodiment, the shape of the capsule is adjusted by using pressure. When the pressure of the hollow cavity gradually increases, the gap surrounded by the capsule will be compressed. When the pressure of the hollow cavity gradually decreases, the gap surrounded by the capsule will be expanded.

[0050] In a specific embodiment of the present application, when the pressure in the hollow cavity gradually increases, the capsules on both sides of the gap gradually approach each other, causing the gap to appear compressed; when the pressure in the hollow cavity gradually decreases, the capsules on both sides of the gap gradually move away from each other, causing the gap to appear expanded.

[0051] In the embodiments of the present application, Figure 2 and Figure 3 As shown, the clamping portion 10 is an elastic clamping portion; the clamping member further includes a rigid bracket 20, which is connected to the elastic clamping portion, and a portion of the rigid bracket 20 is disposed on a side of the clamping portion 10 away from the gap.

[0052] In this embodiment, the clamping portion 10 is made of an elastic material and can change its volume as the pressure in the hollow cavity changes. When the pressure in the hollow cavity increases or decreases, the overall volume of the clamping portion 10 increases or decreases. When the pressure in the hollow cavity gradually increases, the volume of the capsules on both sides of the gap gradually increases, causing the gap to appear compressed; when the pressure in the hollow cavity gradually decreases, the volume of the capsules on both sides of the gap gradually decreases, causing the gap to appear expanded. At the same time, a rigid support 20 is used on one side of the clamping portion 10 to restrict the clamping portion 10 from expanding in a direction away from the gap. The capsule continues to expand in volume toward the gap, causing the size of the gap to become smaller and smaller. As the capsule further expands, the clamping portions 10 on both sides of the gap begin to contact. Under the resistance of the rigid support 20, the clamping force between the clamping portions 10 on both sides gradually increases, thereby adjusting the clamping force of the vascular tissue clip 1 on the blood vessel.

[0053] In the embodiments of the present application, Figure 3 and Figure 4 As shown, the capsule includes a first sub-sac 110 and a second sub-sac 120 . The first sub-sac 110 and the second sub-sac 120 are arranged opposite to each other, and a gap is located between the first sub-sac 110 and the second sub-sac 120 .

[0054] In this embodiment, the two sides of the gap are respectively the first sub-capsule 110 and the second sub-capsule 120. When the gap is compressed to clamp the blood vessel, the first sub-capsule 110 expands toward the second sub-capsule 120, and the second sub-capsule 120 expands toward the first sub-capsule 110, and the distance between the two becomes smaller and smaller; when the gap is expanded to loosen the blood vessel, the first sub-capsule 110 retracts away from the second sub-capsule 120, and the second sub-capsule 120 retracts away from the first sub-capsule 110, and the distance between the two becomes larger and larger. By separately providing the first sub-capsule 110 and the second sub-capsule 120, it is convenient to control the clamping work in the process of clamping the blood vessel and the separation action in the process of loosening the blood vessel.

[0055] In the specific embodiments of this application, Figure 3 As shown, the capsule further includes a third sub-capsule 130, which is in communication with the first sub-capsule 110 and the second sub-capsule 120, respectively. The regulating device 30 is in communication with the third sub-capsule 130, and the regulating device 30 simultaneously controls the pressures in the first sub-capsule 110 and the second sub-capsule 120, maintaining the pressures in the first sub-capsule 110 and the second sub-capsule 120 equal. In another specific embodiment of the present application, the regulating device 30 is in communication with the first sub-capsule 110 and the second sub-capsule 120, respectively, to independently control the pressures in the first sub-capsule 110 and the second sub-capsule 120.

[0056] In the embodiments of the present application, Figure 3As shown, the first sub-capsule 110 includes a first plane, and the second sub-capsule 120 includes a second plane, and the first plane and the second plane are arranged opposite to each other.

[0057] In this embodiment, the first and second planes are positioned relative to each other, ensuring that the distance between them is uniform at all locations. The first and second planes are in contact with the clamped blood vessel, and the clamping force applied to the blood vessel is equal at all locations along its radial direction, ensuring secure clamping. As the first and second daughter capsules 110, 120 gradually expand, they flatten the blood vessel, sealing it in this flattened manner and improving the sealing effect.

[0058] In an embodiment of the present application, the vascular tissue clamp 1 further includes a pressure-maintaining device, which is communicated with the hollow cavity and is used to seal the hollow cavity to maintain a preset pressure in the hollow cavity.

[0059] In this embodiment, the pressure-maintaining device is connected to the hollow cavity, and the pressure-maintaining device is used to maintain the pressure in the clamping portion 10, so that the tissue clamp clamps the blood vessel with a preset clamping force, ensuring the smooth completion of subsequent steps in the operation.

[0060] In the embodiments of the present application, Figure 5 and Figure 6 As shown, the pressure maintaining device includes a pressure sensor 410 and a valve 420. The pressure sensor 410 and the valve 420 are located in the regulating device 30. The pressure sensor 410 is used to detect the pressure in the regulating device 30, and the valve 420 is used to control the opening and closing of the regulating device 30.

[0061] In this embodiment, a pressure sensor 410 is used to detect the pressure in the hollow cavity. After the pressure in the hollow cavity meets the preset requirements, the valve 420 is closed to maintain the hollow cavity at the preset pressure, and the clamping part 10 applies a preset clamping force to the blood vessel.

[0062] In a specific embodiment, when clamping a blood vessel, the regulating device 30 is used to deliver a medium to increase the pressure within the hollow cavity, gradually expanding the balloon and compressing the gap. During this process, the pressure sensor 410 displays the pressure within the hollow cavity. When the pressure reaches a preset level, the valve 420 is closed, stopping the delivery of the medium into the hollow cavity. The hollow cavity and part of the regulating device 30 are sealed and maintained at the preset pressure. When the blood vessel needs to be released, the valve 420 is opened, and the medium is discharged in the opposite direction from the hollow cavity, reducing the pressure within the hollow cavity, causing the balloon to gradually shrink and the gap to gradually expand.

[0063] In the specific implementation of this application, Figure 5As shown, the regulating device 30 includes a lumen and a pump body 310. The pump body 310 delivers a medium through the lumen into the hollow cavity to control the pressure. The detection end of the pressure sensor 410 is located inside the lumen, and the valve 420 is located on the lumen. The pressure sensor 410 detects the pressure within the lumen, and the valve 420 controls the opening and closing of the lumen.

[0064] In the embodiments of the present application, Figure 3 and Figure 4 As shown, the pressure maintaining device also includes a pressure maintaining part 430, and a pipeline is provided inside the pressure maintaining part 430. One end of the pipeline is connected to the clamping part 10, and the other end of the pipeline can be connected to the adjusting device 30, and the other end of the pressure maintaining part 430 is detachably connected to the adjusting device 30; when the pressure maintaining device is disconnected from the adjusting device 30, the end of the pipeline away from the clamping part 10 is closed.

[0065] In this embodiment, by providing a pressure-maintaining member 430, the internal pressure can be maintained even when the clamping portion 10 and the adjusting device 30 are disconnected. The clamping member can clamp the blood vessel in the body alone, preventing the adjusting device 30 from affecting the surgical field of view and hindering the surgical operation during the operation.

[0066] When the regulating device 30 and the pressure-maintaining member 430 are connected, the internal piping of the pressure-maintaining member 430 is interconnected, and the interior of the regulating device 30 communicates with the hollow chamber via the piping, allowing the hollow chamber to be filled with, released from, or maintained at pressure. When the regulating device 30 and the pressure-maintaining member 430 are disconnected, one end of the pressure-maintaining member 430 is sealed, and the hollow chamber and the piping of the pressure-maintaining member 430 form a closed inner cavity. The pressure in the inner cavity is maintained at the same level as before the regulating device 30 and the pressure-maintaining member 430 were disconnected.

[0067] In a specific embodiment, a valve core 431 is provided at one end of the pressure-maintaining member 430 near the regulating device 30. When the regulating device 30 and the pressure-maintaining member 430 are connected, the regulating device 30 applies a pressing force to the core of the valve core, causing the valve core 431 to open, thereby connecting the pipeline of the pressure-maintaining member 430 to the regulating device 30. When the regulating device 30 and the pressure-maintaining member 430 are disconnected, the regulating device 30 separates from the core of the valve core 431, and the core of the valve core 431 rebounds to its original position, sealing the valve core 431 and the end of the pressure-maintaining member 430 away from the clamping portion 10.

[0068] In a specific embodiment, a clamping portion is provided on the outer wall of the pressure maintaining member 430 , and a matching portion is provided at one end of the adjusting device 30 . The clamping portion and the matching portion engage with each other to connect the pressure maintaining member 430 and the adjusting device 30 .

[0069] In a specific embodiment, the vascular tissue clamp 1 includes a clamping member, a pressure-maintaining member 430, and an adjusting device 30. The clamping member includes a clamping portion 10 with a hollow chamber inside and a rigid bracket 20 surrounding the clamping portion 10. The pressure-maintaining member 430 has a continuous pipeline inside, with a valve core 431 disposed at one end of the pipeline. The adjusting device 30 has a lumen inside, with a pump body 310 disposed at one end of the lumen. A pressure sensor 410 and a valve 420 are disposed along the lumen path. In the initial state, the clamping member, pressure-maintaining member 430, and adjusting device 30 are sequentially connected, with the hollow chambers, pipeline, and lumen inside them being sequentially connected. The pump body 310 transports a medium into the hollow chamber along the lumen and pipeline to control the pressure within the hollow chamber. When the pressure gradually increases, the gap in the clamping part 10 is compressed, the clamping part 10 clamps the blood vessel, and the clamping force is gradually increased, and the blood vessel tissue clamp 1 enters the clamping state; when the pressure gradually decreases, the gap in the clamping part 10 expands, the blood vessel in the clamping part 10 is loosened, and returns to the initial state.

[0070] The vascular tissue clamp 1 is divided into a first clamping state and a second clamping state when in the clamping state. In the first clamping state, the adjustment device 30 is connected to the pressure maintaining member 430, and the hollow chamber, pipeline and lumen are connected. The pressure in the hollow chamber is detected by the pressure sensor 410 on the lumen, and the opening and closing of the lumen is controlled by the valve 420. When the pressure in the hollow chamber meets the preset requirements, the valve 420 is closed to maintain the first clamping state. When the clamping is completed, the valve 420 is opened to discharge the medium in the hollow chamber, reduce the pressure, expand the gap and loosen the blood vessel.

[0071] When the vascular tissue clamp 1 is in the first clamping state, the pressure-maintaining member 430 and the regulating device 30 are separated, and the valve core 431 on the pressure-maintaining member 430 returns to the closed state, and the vascular tissue clamp 1 enters the second clamping state. The pipelines of the hollow chamber and the pressure-maintaining member 430 are connected to form a closed cavity. The pressure in the closed cavity is maintained at a preset pressure to maintain the state of clamping the blood vessel. In the second clamping state, only the clamping member and the pressure-maintaining member 430 are in the clamping position of the blood vessel, and the other components are withdrawn from the body to prevent other components of the vascular tissue clamp 1 from blocking the surgical field of view and affecting the surgical operation. After the clamping is completed, the valve core 431 is pressed with a tool such as surgical tweezers to open the valve core 431, reduce the pressure, expand the gap and loosen the blood vessel.

[0072] In some embodiments of the present application, the hollow cavity is filled with air, and the regulating device 30 includes an air pressure regulating device 30 , which is used to inflate the hollow cavity or control the exhaust of the clamping portion 10 .

[0073] In this embodiment, the medium that changes the pressure in the hollow chamber is air. By adjusting the air pressure in the hollow chamber, the balloon deforms and applies a clamping force to the blood vessel. When the blood vessel needs to be loosened, the air is directly discharged, and the air does not affect the operating environment.

[0074] In a specific embodiment, Figure 1 As shown, the gas-liquid regulating device 30 includes an air tube with a tubular cavity inside and a pump body 310. The pump body 310 is configured as a syringe. The injection port of the syringe is connected to the air tube, and air is inflated into the air tube and the hollow chamber through the injection action.

[0075] In some other embodiments of the present application, the hollow cavity is filled with liquid, and the regulating device 30 is a hydraulic regulating device 30, which is used to fill the hollow cavity with liquid or control the clamping portion 10 to discharge liquid.

[0076] In this embodiment, the medium for changing the pressure in the hollow chamber is liquid, and the bladder is deformed by adjusting the hydraulic pressure in the hollow chamber to apply clamping force to the blood vessel. When the blood vessel needs to be released, the liquid in the hollow chamber and lumen is discharged.

[0077] In an embodiment of the present application, a vascular tissue clamp 1 is provided, comprising a clamping member and an adjustment device 30. The clamping member comprises a clamping portion 10 and a rigid support 20. The deformable clamping portion 10 is used to clamp the blood vessel, and the clamping force applied to the blood vessel is varied by adjusting the shape of the clamping portion 10. The clamping force of the tissue clamp can be freely adjusted simply by adjusting the adjustment device 30, ensuring closure of the blood vessel without damaging the vessel's inner wall. Furthermore, the clamp can be directly clamped and placed, improving the controllability of the tissue clamp and simplifying its operation.

[0078] The foregoing descriptions of specific exemplary embodiments of the present application have been presented for purposes of illustration and description.

[0079] These descriptions are not intended to limit the present application to the precise form claimed, and it is apparent that many modifications and variations are possible in light of the above teachings. The exemplary embodiments are selected and described for the purpose of explaining the specific principles of the present application and their practical application, thereby enabling those skilled in the art to make and utilize the various exemplary embodiments and various options and variations of the present application. The scope of the present application is intended to be defined by the claims and their equivalents.

Claims

1. A vascular tissue clip, characterized in that: include: A clamping member, the clamping member comprising a clamping portion, the clamping portion enclosing a gap for clamping a blood vessel; an adjusting device connected to the clamping portion and configured to change a shape of the clamping portion; The adjusting device causes the clamping portion to compress the gap to clamp the blood vessel; Or the adjusting device causes the clamping portion to expand the gap to loosen the blood vessel.

2. The vascular tissue clip according to claim 1, wherein: The clamping portion comprises: The interior of the capsule is a hollow cavity, the regulating device is connected to the hollow cavity, and the regulating device is used to control the pressure in the hollow cavity to adjust the shape of the capsule.

3. The vascular tissue clip according to claim 1, wherein: The clamping portion is an elastic clamping portion; The clamping member further includes a rigid bracket connected to the elastic clamping portion, and the rigid bracket is partially arranged on a side of the clamping portion away from the gap.

4. The vascular tissue clip according to claim 2, wherein: The capsule comprises: A first sub-sac body and a second sub-sac body, wherein the first sub-sac body and the second sub-sac body are arranged opposite to each other, and the gap is located between the first sub-sac body and the second sub-sac body.

5. The vascular tissue clip according to claim 4, wherein: The first sub-capsule includes a first plane, the second sub-capsule includes a second plane, and the first plane and the second plane are arranged opposite to each other.

6. The vascular tissue clip according to claim 2, wherein: Also includes: A pressure-maintaining device is connected to the hollow cavity and is used to seal the hollow cavity so as to maintain a preset pressure in the hollow cavity.

7. The vascular tissue clip according to claim 6, wherein: The pressure maintaining device comprises: A pressure sensor and a valve are located in the regulating device. The pressure sensor is used to detect the pressure in the regulating device, and the valve is used to control the opening and closing of the regulating device.

8. The vascular tissue clip according to claim 6, wherein: The pressure maintaining device further comprises: A pressure-maintaining member, wherein a pipeline is provided inside the pressure-maintaining member, one end of the pipeline is connected to the clamping portion, the other end of the pipeline can be connected to the regulating device, and the other end of the pressure-maintaining member is detachably connected to the regulating device; When the pressure-maintaining member is connected to the regulating device, the clamping portion, the pipeline and the regulating device are in communication; When the pressure maintaining device is disconnected from the regulating device, the end of the pipeline away from the clamping portion is closed.

9. The vascular tissue clip according to claim 2, wherein: The hollow cavity is filled with air; The regulating device includes an air pressure regulating device, and the air pressure regulating device is used to inflate the hollow cavity or control the exhaust of the clamping portion.

10. The vascular tissue clip according to claim 2, wherein: The hollow cavity is filled with liquid; The regulating device includes a hydraulic regulating device, and the hydraulic regulating device is used to fill the hollow cavity with liquid, or control the clamping portion to discharge liquid.

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