Body cavity occlusion apparatus

Abstract

A body cavity occlusion apparatus, comprising a guide rod, a movable member, an outer tube, a core wire, and an intercepting member. A clamping gap is defined at a distal end of the guide rod by means of two clamping parts. A proximal end of the outer tube extends into the clamping gap. The two clamping parts clamp the outer tube. The width of the clamping gap is gradually reduced in a first direction. The first direction is an extending direction of the guide rod from the proximal end to the distal end. The movable member is movably disposed on the guide rod. The core wire penetrates through the outer tube. A proximal end of the core wire penetrates out of the outer tube to be connected to the movable member. The intercepting member connects the core wire and a distal end of the outer tube. The intercepting member is configured to deform to occlude a body cavity when pulled proximally by the core wire. According to the body cavity occlusion apparatus, a wedge-shaped clamping gap is formed by means of the two clamping parts, which ensures the clamping and fixing effect on the outer tube while facilitating the reduction of friction between the outer tube and the core wire, thereby ensuring the smooth movement of the core wire relative to the outer tube.

Description

A body cavity occlusion device Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a body cavity occlusion device. Background Technology

[0002] A body cavity occlusion device is a medical device used to close or block body cavities (such as blood vessels or organs) during surgery. A body cavity occlusion device typically includes a guidewire, a catheter, and an occluder. In use, one end of the guidewire passes through the cavity of the catheter and the occluder, while the distal end of the occluder is fixed to the guidewire. By pulling the proximal end of the guidewire, the unfolded occluder can be axially compressed to form a thrombus-like occluder. Body cavity occlusion devices can block and fix obstacles in body cavities, such as thrombi and stones, to facilitate surgical procedures.

[0003] In related technologies, both the proximal end of the guidewire and the proximal end of the catheter are connected to the handle. However, when the handle is operated to pull the guidewire, there is a situation where the core wire pull damping is relatively large. Utility Model Content

[0004] This application discloses a body cavity occlusion device to solve the technical problem of large core wire traction damping in related technologies.

[0005] To solve the above problems, this application adopts the following technical solution:

[0006] This application provides a body cavity occlusion device, which includes a guide rod, a movable component, an outer tube, a core wire, and an interceptor; wherein:

[0007] The distal end of the guide rod has two clamping portions, which are arranged opposite to each other and define a clamping gap between them. The proximal end of the outer tube extends into the clamping gap, and the two clamping portions clamp the outer tube. Along a first direction, the width of the clamping gap gradually decreases. The first direction is the direction in which the guide rod extends from its proximal end to its distal end.

[0008] The movable component is movably disposed on the guide rod, the core wire passes through the outer tube, and the proximal end of the core wire passes through the outer tube and is connected to the movable component;

[0009] The interceptor connects the distal end of the core wire and the outer tube, and the interceptor is configured to deform and block the body cavity when pulled proximally by the core wire.

[0010] Furthermore, the distal end of the guide rod is provided with a radial through hole that penetrates the guide rod radially. The radial through hole is distributed at the proximal end of the clamping gap and communicates with the clamping gap.

[0011] Furthermore, the body cavity occlusion device also includes a damping tube, which is sleeved on the proximal end of the outer tube and corresponds to the clamping gap. The extension length of the damping tube is greater than the extension length of the clamping gap in the first direction.

[0012] Furthermore, the damping tube is provided with at least two first radial protrusions, and the clamping part is clamped between the two first radial protrusions.

[0013] Furthermore, the guide rod includes a guide rod base and a clamping member. The guide rod base has a mounting groove at its distal end. A portion of the clamping member is disposed in the mounting groove. Two clamping portions are disposed at the distal end of the clamping member. The movable member is slidably sleeved on the guide rod base. The clamping member has an axial clearance hole. The core wire passes through the clearance hole and is connected to the movable member.

[0014] Furthermore, one of the clamping member and the inner wall of the mounting groove is provided with a positioning protrusion, and the other is provided with a positioning recess, wherein the positioning protrusion and the positioning recess are positioned and engaged; and / or, the body cavity sealing device further includes a locking knob, wherein the distal end of the guide rod base is provided with a threaded section, and the locking knob is threadedly engaged with the threaded section, thereby clamping the clamping member with the inner wall of the mounting groove.

[0015] Furthermore, the movable part includes a handle and a conduit connected to the handle, the handle being slidably sleeved on the guide rod base, the conduit being located in the mounting groove, and at least a portion of the conduit extending into the clearance hole.

[0016] Furthermore, the guide rod base is provided with two second radial protrusions, and the shank is slidably engaged between the two second radial protrusions.

[0017] Furthermore, the mounting groove extends along the axial direction of the guide rod and penetrates the radial direction of the guide rod base, so that the guide rod base has two guide rod units arranged opposite to each other.

[0018] Furthermore, the handle has guide holes that slide on the two guide rod units, the handle forms an intermediate portion between the two guide holes, the guide tube connects to the intermediate portion, and the thickness of the intermediate portion is less than the thickness of the clamping member.

[0019] Furthermore, the movable component also includes a locking component connected to the handle to secure the core wire extending into the handle.

[0020] Furthermore, the movable component also includes two wing rings connected to the handle, the included angle between the two wing rings is an obtuse angle, and the two wing rings face away from the locking component.

[0021] The technical solution adopted in this application can achieve the following beneficial effects:

[0022] The body cavity occlusion device of this application has a wedge-shaped space formed by the two clamping parts, which is narrower at the far end and wider at the near end. This ensures that when the clamping parts clamp the outer tube, the part of the outer tube corresponding to the far end of the clamping gap abuts against the core wire, while the part of the outer tube corresponding to the near end of the clamping gap is separated from the core wire. Compared with a design where the clamping gap maintains a consistent width, this significantly reduces the length of the part of the outer tube that abuts against the core wire, which helps to reduce the friction between the outer tube and the core wire, thereby reducing the traction damping of the core wire.

[0023] Meanwhile, based on the fact that the clamping gap is a wedge-shaped space, under the action of external locking force, the clamping force applied by the clamping part to the outer tube gradually increases from near to far, making it easy to generate a recessed part on the outer tube that matches the clamping part. This recessed part can play a certain positioning and anti-dislodgement role for the outer tube, which helps to prevent the outer tube from moving relative to the clamping part and increases the stability of the connection between the outer tube and the guide rod. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 is a schematic diagram of the structure of the body cavity occlusion device according to an embodiment of this application;

[0026] Figure 2 is a schematic diagram of the connection between the guide rod and the outer tube according to an embodiment of this application;

[0027] Figure 3 is a magnified view of part A in Figure 2;

[0028] Figure 4 is a schematic diagram of the structure of the clamping member according to an embodiment of this application;

[0029] Figure 5 is a magnified view of part B in Figure 4;

[0030] Figure 6 is a schematic diagram of the structure of the guide rod base according to an embodiment of this application;

[0031] Figure 7 is a schematic diagram of the guide rod according to an embodiment of this application;

[0032] Figure 8 is a schematic diagram of the structure of a movable component according to an embodiment of this application;

[0033] Figure 9 is a second schematic diagram of the structure of the movable component in an embodiment of this application;

[0034] Figure 10 is an assembly diagram of the guide rod, movable part and locking knob according to an embodiment of this application.

[0035] In the picture:

[0036] 100, Guide rod; 110, Guide rod base; 111, Mounting groove; 112, Guide rod unit; 112a, Positioning recess; 112b, Threaded section; 112c, Second radial protrusion; 120, Clamping component; 121, Clamping part; 122, Clamping gap; 123, Radial through hole; 124, Clearance hole; 125, Positioning protrusion; 126, Draft clearance; 200, Moving part; 210, Handle; 211, Guide hole; 212, Middle part; 220, Guide tube; 230, Locking component; 240, Wing ring; 300, Outer tube; 400, Core wire; 500, Interceptor; 600, Damping tube; 610, First radial protrusion; 700, Locking knob. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0039] The body cavity occlusion device provided in this application will be described in detail below with reference to Figures 1 to 10, through specific embodiments and application scenarios.

[0040] Please refer to Figure 1. This application discloses a body cavity occlusion device, which includes a guide rod 100, a movable component 200, an outer tube 300, a core wire 400, and an interceptor 500. The guide rod 100 provides a mounting base for the movable component 200, which is slidably mounted on the guide rod 100. The guide rod 100 and the movable component 200 together constitute the handle structure of the body cavity occlusion device. The proximal ends of the outer tube 300 and the core wire 400 are both connected to the handle structure.

[0041] Specifically, the proximal end of the outer tube 300 is fixedly connected to the guide rod 100. The core wire 400 passes through the outer tube 300, and the proximal end of the core wire 400 extends out of the outer tube 300 and connects to the movable part 200. The distal end of the core wire 400 extends out of the outer tube 300 and connects to the interceptor 500. The interceptor 500 can be a flexible sheet-like structure. The interceptor 500 connects the distal end of the core wire 400 to the distal end of the outer tube 300. When the movable part 200 slides on the guide rod 100, the interceptor 500 can deform accordingly.

[0042] When the movable part 200 moves proximally along the guide rod 100, the core wire 400 pulls the interceptor 500 proximally, while the outer tube 300 is not pulled. The position of the part of the interceptor 500 connected to the outer tube 300 remains basically unchanged. This causes the interceptor 500 in the unfolded state to be compressed axially, generating folds, thereby increasing the radial dimension of the interceptor 500 and enabling it to have an interception effect, thus achieving the sealing of the body cavity. When the movable part 200 moves distally along the guide rod 100, the movable part 200 pushes the core wire 400 distally. The interceptor 500 in the compressed and folded state is pulled from the distal end by the core wire 400 and unfolded, deforming back into a flexible sheet-like structure, thus losing its sealing and interception effect. At this time, the interceptor 500 itself has good passage.

[0043] In this embodiment, the proximal end of the outer tube 300 is connected to the distal end of the guide rod 100 and fixedly connected to the guide rod 100. Specifically, referring to Figures 2 and 3, the distal end of the guide rod 100 has two clamping portions 121, which are arranged opposite to each other and define a clamping gap 122 between them. The proximal end of the outer tube 300 extends into the clamping gap 122. A locking force can be applied to the two clamping portions 121 by an external locking member, so that the two clamping portions 121 clamp the proximal end of the outer tube 300, thereby connecting and fixing the outer tube 300 to the guide rod 100.

[0044] In this embodiment, the width of the clamping gap 122 gradually decreases along a first direction, which is the direction in which the guide rod 100 extends from its proximal end to its distal end. This results in a wedge-shaped space formed by the two clamping portions 121, narrower at the distal end and wider at the proximal end. This ensures that when the clamping portions 121 clamp the outer tube 300, only the portion of the outer tube 300 corresponding to the distal end of the clamping gap 122 abuts against the core wire 400, while the portion of the outer tube 300 corresponding to the proximal end of the clamping gap 122 remains separated from the core wire 400. Compared to a design where the clamping gap 122 maintains a consistent width, this significantly reduces the length of the portion of the outer tube 300 that abuts against the core wire 400, thus reducing the length of the outer tube 300. The friction between the core wire 400 and the core wire 400 reduces the tension damping of the core wire 400. At the same time, based on the fact that the clamping gap 122 is a wedge-shaped space, under the action of the external locking force, the clamping force applied by the clamping part 121 to the outer tube 300 gradually increases from near to far, making it easy to generate a recessed part on the outer tube 300 that matches the clamping part 121. This recessed part can play a certain positioning and anti-dislodgement role for the outer tube 300, which is conducive to preventing the movement of the outer tube 300 relative to the clamping part 121 and increasing the stability of the connection between the outer tube 300 and the guide rod 100.

[0045] In this embodiment, please refer to Figures 1 and 2. The body cavity sealing device further includes a locking knob 700, which is used to apply a locking force to the two clamping parts 121 to clamp and fix the outer tube 300. Specifically, the locking knob 700 is threaded onto the distal end of the guide rod 100. As the locking knob 700 is screwed onto the guide rod 100, the inner wall of the locking knob 700 gradually abuts against the two clamping parts 121, thereby applying a locking force to the two clamping parts 121 so that the two opposing clamping parts 121 can abut against each other and clamp and constrain the outer tube 300.

[0046] Please refer to Figure 3. In a further technical solution, the near end of the guide rod 100 is also provided with a radial through hole 123 that penetrates the guide rod 100. The radial through hole 123 is distributed near the clamping gap 122 and is connected to the clamping gap 122. In optional embodiments of this application, the radial through hole 123 can be a square hole or a round hole. This application does not impose any specific restrictions on this.

[0047] Based on the presence of the radial perforation 123, the distal end of the guide rod 100 can form the aforementioned two clamping portions 121, and the two clamping portions 121 can have a certain deformation capability to move closer or further apart. That is, during the locking process of the locking knob 700, the two clamping portions 121 can be deformed by resistance and move closer together. At the same time, the radial perforation 123 can also provide a accommodating space for the proximal end of the outer tube 300. That is, the proximal end of the outer tube 300 can extend through the clamping gap 122 into the radial perforation 123. In this way, the entire clamping wall of the clamping gap 122 along the first direction is clamped on the outer tube 300, which can increase the stability of clamping the outer tube 300.

[0048] Please refer to Figure 3. The body cavity occlusion device may also include a damping tube 600, which is sleeved on the proximal end of the outer tube 300 and corresponds to the clamping gap 122. The extension length of the damping tube 600 is greater than the extension length of the clamping gap 122 in the first direction. The two clamping parts 121 clamp the outer tube 300 by clamping on the damping tube 600.

[0049] In this embodiment, the damping tube 600 is preferably a structural component made of an elastic material, such as a rubber tube or a silicone tube. The damping tube 600 can be connected and fixed to the outer tube 300 by adhesive bonding. The damping tube 600 made of an elastic material typically has a large coefficient of friction, providing better frictional resistance. When the two clamping parts 121 are clamped on the damping tube 600, it can prevent the outer tube 300 from sliding and rotating during clamping, thereby increasing the stability of the clamping parts 121 clamping the outer tube 300. Furthermore, the damping tube 600 can provide an additional protective layer, preventing the core wire 400 from being directly subjected to clamping force. This reduces the stress on the core wire 400 and prevents damage to it.

[0050] In a further technical solution, please refer to Figure 3. The damping tube 600 is provided with at least two first radial protrusions 610. The clamping part 121 is clamped between the two first radial protrusions 610. Along the first direction, the first radial protrusions 610 and the two clamping parts 121 are in a limiting engagement. When the damping tube 600 is clamped between the two clamping parts, the first radial protrusions 610 at both ends of the damping tube 600 can restrict the movement of the damping tube 600 along its axial direction, ensuring that the damping tube 600 remains in the correct position. This increases the stability of the clamping part 121 clamping the outer tube 300 and prevents the outer tube 300 from sliding or shifting during clamping.

[0051] In this embodiment, in order to facilitate the connection between the proximal end of the core wire 400 and the movable member 200 after passing through the outer tube 300, the guide rod 100 can be a split structure.

[0052] Specifically, please refer to Figures 4 to 8. The guide rod 100 includes a guide rod base 110 and a clamping member 120. As shown in Figure 6, a mounting groove 111 is provided at the distal end of the guide rod base 110. The mounting groove 111 is provided at the distal end of the guide rod base 110 and extends to the proximal end of the guide rod base 110 to form an accommodating space within the guide rod base 110. A part of the clamping member 120 is disposed within the mounting groove 111 to be assembled and fixed with the guide rod base 110. Another part of the clamping member 120 is exposed at the distal end of the guide rod base 110 to be connected and fixed with the outer tube 300. Two clamping parts 121 are provided on the exposed parts of the clamping member 120 of the guide rod base 110.

[0053] In this embodiment, referring to Figure 4, the portion of the clamping member 120 extending into the mounting groove 111 has multiple gating units 120a distributed along its axial direction. Each gating unit 120a has a draft clearance 126, and each gating unit 120a corresponds to an injection hole during injection molding. In this way, using multiple gating holes for simultaneous casting during the injection molding of the clamping member 120 provides a more uniform molten material, reduces the possibility of under- or over-casting, and helps improve the strength and stability of the clamping member 120.

[0054] Please refer to Figure 2. The movable part 200 is slidably sleeved on the guide rod base 110. It can be understood that the movable part 200 is located near the end of the clamping part 120. Please refer to Figure 5. The clamping part 120 is provided with a clearance hole 124 that runs through it along its axial direction. The proximal end of the core wire 400 passes through the clearance hole 124 and connects to the movable part 200. With this arrangement, the guide rod base 110, the clamping part 120, and the movable part 200 are coaxially arranged. When the movable part 200 moves relative to the guide rod base 110, the direction of movement of the movable part 200 has good coaxiality with the proximal end opening of the outer tube 300, making it less likely for the core wire 400 to bend during pulling or pushing, thus ensuring smooth operation. At the same time, the coaxial arrangement of the guide rod base 110, the clamping part 120, and the movable part 200 results in a smaller space occupation for the handle structure formed by the three components, making it convenient for the operator to grip and operate.

[0055] In this embodiment of the application, please refer to Figures 6 and 7. The mounting groove 111 extends axially toward the proximal end of the guide rod 100 and penetrates the radial direction of the guide rod base 110, so that the guide rod base 110 has two oppositely arranged guide rod units 112, and the clamping member 120 is clamped between the two guide rod units 112.

[0056] In order to achieve the clamping and fixing of the clamping member 120 by the two guide rod units 112, the far end of the guide rod unit 112 is provided with a threaded section 112b. The aforementioned locking knob 700 is threadedly engaged with the threaded section 112b. That is to say, while applying a locking force to the two clamping parts 121 to clamp and fix the outer tube 300, the aforementioned locking knob 700 can also lock the clamping member 120 clamped between the two guide rod units 112. It has multiple uses and can improve the compactness of the entire handle structure.

[0057] In a further technical solution, one of the inner walls of the clamping member 120 and the mounting groove 111 is provided with a positioning protrusion 125, and the other is provided with a positioning recess 112a. The positioning protrusion 125 and the positioning recess 112a are positioned and engaged, which can improve the stability of the assembly connection between the two and prevent misalignment and shaking between the guide rod base 110 and the clamping member 120. In a preferred embodiment, the positioning protrusion 125 is provided on the clamping member 120, and the positioning recess 112a is provided on the inner wall of the mounting groove 111, which makes it easier to process the positioning protrusion 125 and the positioning recess 112a.

[0058] Please refer to Figures 8 and 10. In this embodiment of the application, the movable part 200 includes a handle 210 and a conduit 220 connected to the handle 210. The handle 210 is slidably sleeved on the guide rod base 110. The conduit 220 is located in the mounting groove 111. At least a portion of the conduit 220 extends into the clearance hole 124.

[0059] The handle 210 has a receiving space communicating with the conduit 220. The proximal end of the core wire 400 extends through the conduit 220 into the receiving space and is fixed relative to the handle 210. For example, referring to Figure 8, the movable member 200 also includes a locking member 230 that is threadedly engaged with the handle 210. The locking member 230 can be threadedly engaged with the handle 210, and a portion of the locking member 230 can extend into the receiving space and press against the core wire 400, thereby fixing the core wire 400 extending into the handle 210. Of course, in other optional embodiments of this application, after the core wire 400 extends into the handle 210, it can also be connected and fixed to the handle 210 by sealing, fastening, or other methods. This application does not impose specific limitations on this, as long as the connection and fixation of the core wire 400 to the handle 210 can be achieved.

[0060] In this embodiment, the conduit 220 is designed so that the core wire 400 is encased within it. During the movement of the core wire 400, the conduit 220 prevents the core wire 400 from bending or twisting against the proximal end of the clamping member 120, thus ensuring the core wire 400 maintains a stable movement and consequently ensuring the interceptor 500 undergoes the intended deformation. Simultaneously, the design of the conduit 220 also reduces friction and resistance between the core wire 400 and the clearance hole 124, making the pushing process smoother and more efficient.

[0061] As described above, based on the mounting groove 111, the guide rod base 110 has two opposing guide rod units 112. Please refer to Figures 8 and 10. The handle 210 has two guide holes 211 that slide in the two guide rod units 112. The handle 210 forms an intermediate portion 212 between the two guide holes 211. The intermediate portion 212 is located in the mounting groove 111. The guide rod base 110 has two second radial protrusions 112c provided on the guide rod units 112. The handle 210 slides in the two second radial protrusions 112c.

[0062] In this embodiment, the thickness of the middle portion 212 is less than the thickness of the clamping member 120, so that...

[0063] When the handle 210 is assembled onto the guide rod base 110, the two guide rod units 112 have a certain deformation capacity from their roots due to the presence of the mounting groove 111. Therefore, by applying a slight compressive force to the two guide rod units 112 to bring them closer together, the handle 210 can easily pass through the second radial protrusion 112c. After the handle 210 is inserted between the two second radial protrusions 112c, the clamping member 120 is positioned between the two guide rod units 112. During the rotation of the locking knob 700, the two guide rod units 112 are clamped and abutted against the clamping member 120. Based on the supporting effect of the clamping member 120 on the two guide rod units 112 and the locking effect of the locking knob 700, the two guide rod units 112 are difficult to deform at this time, and the handle 210 is difficult to pass through the second radial protrusion 112c. That is, the two second radial protrusions 112c limit the handle 210.

[0064] In the embodiments of this application, the movable part 200 also includes two wing rings 240 that connect to the handle 210. When the operator drives the movable part 200 to move along the guide rod 100, he / she can insert two fingers into the wing rings 240 to hold the handle 210, so as to facilitate pushing the handle 210 to move.

[0065] In a further technical solution, the two wing rings 240 can be an open structure. Specifically, please refer to Figure 8. The two wing rings 240 are provided with notches with opening directions that are roughly opposite to each other. Two fingers can be inserted into the wing rings 240 through the notches, rather than just through the fingers, which increases the convenience of holding the movable part 200.

[0066] In a further technical solution, please refer to Figure 9. Two wing rings 240 are distributed on both sides of the handle 210, and the included angle between the two wing rings 240 is an obtuse angle. When the operator holds the movable part 200, since there is inevitably a certain angle between the two fingers, the two wing rings 240 with the obtuse angle distribution can better adapt to the shape of the fingers, more effectively distribute the pressure on the fingers, reduce pressure and discomfort on the fingers, and improve the grip experience. Furthermore, the two wing rings 240 with the obtuse angle can provide a larger contact area, which can better fix the fingers and reduce the shaking and slippage of the fingers during the grip.

[0067] Furthermore, the two wing rings 240 face away from the locking member 230, allowing the operator's fingers to be inserted into the two wing rings 240 from the side of the movable member 200 facing away from the locking member 230, thereby avoiding discomfort caused by the operator coming into contact with the locking member 230 when holding the movable member 200.

[0068] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A body cavity occlusion device, characterized in that, Includes a guide rod (100), a movable component (200), an outer tube (300), a core wire (400), and an interceptor (500); wherein: The distal end of the guide rod (100) has two clamping portions (121), which are arranged opposite to each other and define a clamping gap (122) between them. The proximal end of the outer tube (300) extends into the clamping gap (122), and the two clamping portions (121) clamp the outer tube (300). Along a first direction, the width of the clamping gap (122) gradually decreases. The first direction is the direction in which the guide rod (100) extends from its proximal end to its distal end. The movable component (200) is movably disposed on the guide rod (100), the core wire (400) passes through the outer tube (300), and the proximal end of the core wire (400) passes through the outer tube (300) and is connected to the movable component (200); The interceptor (500) connects the distal end of the core wire (400) and the outer tube (300), and the interceptor (500) is configured to deform and block the body cavity when pulled proximally by the core wire (400).

2. The body cavity occlusion device according to claim 1, characterized in that, The distal end of the guide rod (100) is also provided with a radial through hole (123) that radially penetrates the guide rod (100). The radial through hole (123) is distributed at the proximal end of the clamping gap (122) and communicates with the clamping gap (122).

3. The body cavity occlusion device according to claim 1, characterized in that, It also includes a damping tube (600), which is sleeved on the proximal end of the outer tube (300) and corresponds to the clamping gap (122). The extension length of the damping tube (600) is greater than the extension length of the clamping gap (122) in the first direction.

4. The body cavity occlusion device according to claim 3, characterized in that, The damping tube (600) is provided with at least two first radial protrusions (610), and the clamping part (121) is clamped between the two first radial protrusions (610).

5. The body cavity occlusion device according to any one of claims 1 to 4, characterized in that, The guide rod (100) includes a guide rod base (110) and a clamping member (120); wherein: The guide rod base (110) has a mounting groove (111) at its far end. A portion of the clamping member (120) is located in the mounting groove (111). Two clamping parts (121) are located at the far end of the clamping member (120). The movable member (200) is slidably sleeved on the guide rod base (110). The clamping member (120) is provided with a clearance hole (124) that extends along its axial direction, and the core wire (400) passes through the clearance hole (124) and is connected to the movable member (200).

6. The body cavity occlusion device according to claim 5, characterized in that, One of the clamping member (120) and the inner wall of the mounting groove (111) is provided with a positioning protrusion (125) and the other is provided with a positioning recess (112a), and the positioning protrusion (125) and the positioning recess (112a) are positioned and engaged. And / or, the body cavity sealing device further includes a locking knob (700), and the distal end of the guide rod base (110) is provided with a threaded section (112b). The locking knob (700) is threadedly engaged with the threaded section (112b) to clamp the clamping member (120) on the inner wall of the mounting groove (111).

7. The body cavity occlusion device according to claim 5, characterized in that, The movable part (200) includes a handle (210) and a conduit (220) connected to the handle (210). The handle (210) is slidably sleeved on the guide rod base (110). The conduit (220) is located in the mounting groove (111), and at least a portion of the conduit (220) extends into the clearance hole (124).

8. The body cavity occlusion device according to claim 7, characterized in that, The guide rod base (110) is provided with two second radial protrusions (112c), and the handle (210) is slidably fitted between the two second radial protrusions (112c).

9. The body cavity occlusion device according to claim 8, characterized in that, The mounting groove (111) extends along the axial direction of the guide rod (100) and penetrates the radial direction of the guide rod base (110), so that the guide rod base (110) has two oppositely arranged guide rod units (112). The handle (210) has guide holes (211) that slide on the two guide rod units (112), the handle (210) forms an intermediate portion (212) between the two guide holes (211), the guide tube (220) connects the intermediate portion (212), and the thickness of the intermediate portion (212) is less than the thickness of the clamping member (120).

10. The body cavity occlusion device according to claim 7, characterized in that, The movable part (200) also includes a locking part (230), which is connected to the handle (210) to fix the core wire (400) extending into the handle (210). The movable part (200) also includes two wing rings (240) that connect to the handle (210), the included angle between the two wing rings (240) is an obtuse angle, and the two wing rings (240) face away from the locking part (230).

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