Body cavity plugging device

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a body cavity plugging device which comprises a guide rod, a movable part, an outer tube, a core wire and an intercepting part, the far end of the guide rod defines a clamping gap through two clamping parts, the near end of the outer tube extends into the clamping gap, the two clamping parts clamp the outer tube, and the outer tube is clamped by the intercepting part in the first direction. The width of the clamping gap is gradually reduced, the first direction is the extending direction of the guide rod from the near end to the far end, the movable part is movably arranged on the guide rod, the core wire penetrates through the outer pipe, the near end of the core wire penetrates out of the outer pipe to be connected with the movable part, and the intercepting part is connected with the core wire and the far end of the outer pipe. The intercepting piece is configured to deform to block a body cavity when being pulled towards the near end by the core wire; according to the scheme, the wedge-shaped clamping gap is formed by the two clamping parts, so that the friction between the outer pipe and the core wire is reduced under the condition that the clamping and fixing effect on the outer pipe is ensured, and the movement smoothness of the core wire relative to the outer pipe is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a body cavity blocking device. Background Art

[0002] A body cavity occluding device is a medical device used to seal or block a body cavity (such as a blood vessel or organ) during surgery. The body cavity occluding device generally includes a guide wire, a catheter, and an occluding object. When in use, one end of the guide wire will pass through the cavity of the catheter and the occluding object, and the distal end of the occluding object will be fixed to the guide wire. By pulling the proximal end of the guide wire, the unfolded occluding object can be axially compressed to form a plug-like occluding object. The body cavity occluding device can seal and fix obstacles in the body cavity, such as thrombi, stones, etc., to facilitate the operator to perform surgical operations.

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

[0004] The utility model discloses a body cavity blocking device, which is used to solve the technical problem that the core wire pulling damping of the body cavity blocking device in the related technology is relatively large.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] The present application provides a body cavity blocking device, which includes a guide rod, a movable part, an outer tube, a core wire and an intercepting part; wherein:

[0007] The distal end of the guide rod has two clamping parts, the two clamping parts are arranged opposite to each other and define a clamping gap therebetween, the proximal end of the outer tube extends into the clamping gap, and the two clamping parts clamp the outer tube, and the width of the clamping gap gradually decreases along a first direction, the first direction being the extending direction of the guide rod from its proximal end to its distal end;

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

[0009] The intercepting member connects the core wire and the distal end of the outer tube, and is configured to be deformed and block the body cavity when the core wire is pulled toward the proximal end.

[0010] Furthermore, the distal end of the guide rod is also provided with a radial through hole radially penetrating the guide rod, and the radial through hole is distributed at the proximal end of the clamping gap and communicated with the clamping gap.

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

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

[0013] Furthermore, the guide rod includes a guide rod base and a clamping piece, the distal end of the guide rod base is provided with a mounting groove, part of the clamping piece is arranged in the mounting groove, the two clamping parts are arranged at the distal end of the clamping piece, the movable piece is slidably sleeved on the guide rod base, the clamping piece is provided with an avoidance hole which penetrates along its axial direction, and the core wire passes through the avoidance hole and is connected to the movable piece.

[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, and the positioning protrusion is positioned and matched with the positioning recess; and / or, the body cavity blocking device also includes a locking knob, and the distal end of the guide rod base is provided with a threaded section, and the locking knob is threadedly matched with the threaded section, so that the inner wall of the mounting groove clamps the clamping member.

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

[0016] Furthermore, two second radial protrusions are provided on the guide rod base, and the handle is slidably fitted between the two second radial protrusions.

[0017] Furthermore, the mounting groove extends along the axial direction of the guide rod, and the mounting groove 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] Further, the handle has a guide hole that is slidably fitted on the two guide rod units, the handle forms a middle part between the two guide holes, the catheter connects the middle part, and the thickness of the middle part is less than the thickness of the clamp.

[0019] Furthermore, the movable part also includes a locking part, and the locking part is connected to the handle to fix the core wire extending into the handle.

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

[0021] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0022] In the body cavity occluding device of the present application, the clamping gap formed by the two clamping parts is a wedge-shaped space which is narrow at the far end and wide at the near end, so that when the clamping parts clamp the outer tube, the part of the outer tube corresponding to the distal end of the clamping gap abuts against the core wire, while the part of the outer tube corresponding to the proximal end of the clamping gap is separated from the core wire. Compared with the design method of maintaining a consistent width of the clamping gap, the length of the part of the outer tube abutting against the core wire can be significantly reduced, which is beneficial to reducing the friction between the outer tube and the core wire, thereby reducing the pulling damping of the core wire.

[0023] At the same time, based on the fact that the clamping gap is a wedge-shaped space, under the action of the 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 produce a recessed portion on the outer tube that matches the clamping part. The recessed portion can play a certain role in positioning and preventing the outer tube from falling off, which is beneficial to prevent the outer tube from moving relative to the clamping part and increase the stability of the connection between the outer tube and the guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of a body cavity blocking device according to an embodiment of the present application;

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

[0027] Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A;

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

[0029] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

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

[0031] Figure 7 is a schematic structural diagram of a guide rod in an embodiment of the present application;

[0032] Figure 8 It is one of the structural schematic diagrams of the movable parts of the embodiment of the present application;

[0033] Fig. 9 This is the second structural schematic diagram of the movable parts of the embodiment of the present application;

[0034] Fig.10 It is a schematic diagram of the assembly of the guide rod, movable part and locking knob of the embodiment of the present application.

[0035] In the figure:

[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 member; 121, clamping portion; 122, clamping gap; 123, radial perforation; 124, avoidance hole; 125, positioning protrusion; 126, demolding gap; 200, movable member; 210, handle; 211, guide hole; 212, middle portion; 220, catheter; 230, locking member; 240, wing ring; 300, outer tube; 400, core wire; 500, intercepting member; 600, damping tube; 610, first radial protrusion; 700, locking knob. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0038] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0039] The following is combined with Figures 1 to 10 , the body cavity occluding device provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0040] See also Figure 1The embodiment of the present application discloses a body cavity blocking device, which includes a guide rod 100, a movable part 200, an outer tube 300, a core wire 400 and an intercepting part 500. The guide rod 100 can provide a mounting base for the movable part 200, the movable part 200 is slidably sleeved on the guide rod 100, the guide rod 100 and the movable part 200 together constitute a handle structure of the body cavity blocking device, and the proximal ends of the outer tube 300 and the proximal ends of the core wire 400 are both connected to the handle structure.

[0041] Specifically, the proximal end of the outer tube 300 is connected and fixed to the guide rod 100, the core wire 400 is inserted into 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 member 200, and the distal end of the core wire 400 passes through the outer tube 300 and is connected to the interception member 500. The interception member 500 can be a flexible sheet-like structural member, and the interception member 500 connects the distal end of the core wire 400 and the distal end of the outer tube 300. When the movable member 200 is operated to slide on the guide rod 100, the interception member 500 can be deformed accordingly.

[0042] When the operating movable part 200 moves toward the proximal end along the guide rod 100, the core wire 400 pulls the intercepting part 500 to move toward the proximal end, while the outer tube 300 is not pulled, and the position of the part where the intercepting part 500 is connected to the outer tube 300 remains basically unchanged, so that the intercepting part 500 in the expanded state is compressed in its axial direction to generate wrinkles, thereby increasing the radial size of the intercepting part 500 so that it has an intercepting effect, thereby achieving blocking of the body cavity; and when the operating movable part 200 moves toward the distal end along the guide rod 100, the movable part 200 pushes the core wire 400 to move toward the distal end, and the intercepting part 500 in the compressed and wrinkled state is pulled from the distal end by the core wire 400 and stretched, and re-deformed into a flexible sheet-like structure, thereby losing the blocking and intercepting effect. At this time, the intercepting part 500 itself has good passability.

[0043] In the embodiment of the present application, the proximal end of the outer tube 300 is connected to the distal end of the guide rod 100 and is fixedly connected to the guide rod 100. Figure 2 and Figure 3 The distal end of the guide rod 100 has two clamping parts 121, which are arranged opposite to each other and define a clamping gap 122 therebetween. The proximal end of the outer tube 300 extends into the clamping gap 122. A locking force can be applied to the two clamping parts 121 through an external locking member, so that the two clamping parts 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 the embodiment of the present application, the width of the clamping gap 122 gradually decreases along the first direction, and the first direction is the extension direction of the guide rod 100 from its proximal end to its distal end. In this way, the clamping gap 122 formed by the two clamping parts 121 is a wedge-shaped space that is narrow at the far end and wide at the near end, so that when the clamping parts 121 clamp the outer tube 300, the part of the outer tube 300 corresponding to the distal end of the clamping gap 122 abuts against the core wire 400, while the part of the outer tube 300 corresponding to the proximal end of the clamping gap 122 is in a separated state from the core wire 400. Compared with the design method of keeping the width of the clamping gap 122 consistent, the length of the part of the outer tube 300 abutting against the core wire 400 can be significantly reduced, which is conducive to reducing the outer tube 300. The friction between the clamping gap 122 and the core wire 400 reduces the pulling damping of the core wire 400; at the same time, based on the clamping gap 122 being a wedge-shaped space, under the action of the external locking force, the clamping force applied by the clamping portion 121 to the outer tube 300 gradually increases from near to far, so that it is easy to produce a recessed portion on the outer tube 300 that is compatible with the clamping portion 121. The recessed portion can play a certain positioning and anti-slip effect on the outer tube 300, which is beneficial to prevent the outer tube 300 from moving relative to the clamping portion 121, and increase the stability of the connection between the outer tube 300 and the guide rod 100.

[0045] In the examples of this application, see Figure 1 and Figure 2 The body cavity blocking 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 threadedly engaged with the distal end of the guide rod 100. As the locking knob 700 and the guide rod 100 are screwed together, the inner side 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 opposite clamping parts 121 can abut against each other and play a clamping and restraining role on the outer tube 300.

[0046] See also Figure 3 In a further technical solution, the proximal end of the guide rod 100 is also provided with a radial through hole 123 which radially penetrates the guide rod 100. The radial through hole 123 is distributed at the proximal end of the clamping gap 122, and the radial through hole 123 is connected to the clamping gap 122. In an optional embodiment of the present application, the radial through hole 123 can be a square hole or a round hole, and the present application does not make any specific restrictions on this.

[0047] Based on the existence of the radial perforations 123, the two clamping parts 121 mentioned above can be formed at the distal end of the guide rod 100, and the two clamping parts 121 can have a certain deformation ability to move closer to or away from each other, that is, during the process of rotating and locking the locking knob 700, the two clamping parts 121 can be deformed and move closer to each other. At the same time, the radial perforations 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 pass through the clamping gap 122 and extend into the radial perforations 123. In this way, the entire section of the clamping wall surface 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 continue to see Figure 3 The body cavity blocking device may further include a damping tube 600, which is sleeved on the proximal end of the outer tube 300, and the damping tube 600 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 are clamped on the damping tube 600 to achieve clamping of the outer tube 300.

[0049] In the embodiment of the present application, the damping tube 600 is preferably a structural member made of elastic material, for example, the damping tube 600 can be a rubber tube or a silicone tube, and the damping tube 600 can be connected and fixed to the outer tube 300 by gluing. The damping tube 600 made of elastic material usually has a large friction coefficient and can provide better friction resistance. When the two clamping parts 121 are clamped on the damping tube 600, the outer tube 300 can be prevented from sliding and rotating during the clamping process, thereby increasing the stability of the clamping parts 121 clamping the outer tube 300. In addition, the damping tube 600 can provide an additional protective layer to prevent the core wire 400 from being directly subjected to the clamping force, thereby reducing the stress on the core wire 400 and preventing the core wire 400 from being damaged.

[0050] For further technical solutions, please continue to refer to Figure 3 At least two first radial protrusions 610 are provided on the damping tube 600, and the clamping portion 121 is clamped between the two first radial protrusions 610. Along the first direction, the first radial protrusions 610 and the two clamping portions 121 are limitedly matched. When the damping tube 600 is clamped between the two clamping portions, the first radial protrusions 610 at both ends of the damping tube 600 can limit the movement of the damping tube 600 along its axial direction, ensuring that the damping tube 600 is kept in the correct position, thereby increasing the stability of the clamping portion 121 clamping the outer tube 300, and preventing the outer tube 300 from sliding or shifting during the clamping process.

[0051] In the embodiment of the present application, in order to facilitate the proximal end of the core wire 400 to be connected to the movable member 200 after passing through the outer tube 300, the guide rod 100 may be a split structure.

[0052] Specifically, see Figures 4 to 8 The guide rod 100 includes a guide rod base 110 and a clamping member 120, wherein Figure 6 A mounting groove 111 is provided at the distal end of the guide rod base 110, and 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 in the guide rod base 110. A portion of the clamping member 120 is provided in the mounting groove 111 to be assembled and fixed with the guide rod base 110, and another portion 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, and two clamping portions 121 are provided at the portion of the clamping member 120 exposed from the guide rod base 110.

[0053] In the examples of this application, see Figure 4 The portion of the clamp 120 extending into the mounting groove 111 has a plurality of casting units 120a distributed along its axial direction, and there is a draft gap 126 between each casting unit 120a, and each casting unit 120a corresponds to an injection hole during injection molding. In this way, during the injection molding process of the clamp 120, using a plurality of casting holes for joint casting can provide more uniform molten raw materials, reduce the possibility of insufficient or excessive casting, and help improve the strength and stability of the clamp 120.

[0054] See also Figure 2 The movable member 200 is slidably sleeved on the guide rod base 110. It can be understood that the movable member 200 is distributed at the proximal end of the clamping member 120. Figure 5 The clamping member 120 is provided with an avoidance hole 124 which penetrates along its axial direction, and the proximal end of the core wire 400 passes through the avoidance hole 124 and is connected to the movable member 200. Under such a configuration, the guide rod base 110, the clamping member 120 and the movable member 200 are coaxially arranged. When the movable member 200 is operated to move relative to the guide rod base 110, the moving direction of the movable member 200 has good coaxiality with the proximal end opening of the outer tube 300, so that the core wire 400 is not easy to bend during the pulling or pushing process, thereby ensuring the smoothness of the operation; at the same time, the guide rod base 110, the clamping member 120 and the movable member 200 are coaxially arranged, and the handle structure composed of the three occupies less space, which is convenient for the operator to hold and operate.

[0055] In the examples of this application, see Figure 6 and Figure 7 The mounting groove 111 extends proximally along the axial direction of the guide rod 100 , and the mounting groove 111 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 piece 120 by the two guide rod units 112, a threaded section 112b is provided at the distal end of the guide rod unit 112, and the aforementioned locking knob 700 is threadedly matched with the threaded section 112b. That is to say, while the aforementioned locking knob 700 applies a locking force to the two clamping parts 121 to clamp and fix the outer tube 300, it can also lock the clamping piece 120 clamped between the two guide rod units 112. One thing has multiple uses, which can improve the compactness of the entire handle structure.

[0057] In a further technical solution, one of the inner wall 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 matched, which can improve the stability of the assembly connection between the two and avoid the misalignment and shaking of 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, so that it is easier to process when processing and forming the positioning protrusion 125 and the positioning recess 112a.

[0058] See also Figure 8 and Fig.10 In the embodiment of the present application, the movable part 200 includes a handle 210 and a catheter 220 connected to the handle 210. The handle 210 is slidably mounted on the guide rod base 110. The catheter 220 is located in the mounting groove 111. At least a portion of the catheter 220 extends into the avoidance hole 124.

[0059] The handle 210 is provided with a receiving space that communicates with the catheter 220. The proximal end of the core wire 400 extends into the receiving space through the catheter 220 and is fixed relative to the handle 210. For example, see Figure 8 The movable member 200 further includes a locking member 230 threadedly matched with the handle 210. The locking member 230 can be threadedly matched with the handle 210, and a portion of the locking member 230 can extend into the accommodation space and abut against the core wire 400, so that the core wire 400 inserted into the handle 210 is fixed. Of course, in other optional embodiments of the present application, after the core wire 400 is inserted into the handle 210, the core wire 400 can also be connected and fixed to the handle 210 by means of sealing, tying, etc. The present application does not make specific restrictions on this, as long as the connection and fixation of the core wire 400 and the handle 210 can be achieved.

[0060] In the embodiment of the present application, the core wire 400 is wrapped inside the catheter 220 through the design of the catheter 220. In the process of pushing the core wire 400 to move, the catheter 220 can prevent the core wire 400 from bending or twisting against the proximal end of the clamp 120, thereby ensuring that the core wire 400 maintains a stable moving state during the movement, and further ensuring that the intercepting member 500 can undergo the expected deformation. At the same time, the design of the catheter 220 can also reduce the friction and resistance between the core wire 400 and the avoidance hole 124, making the pushing process smoother and more efficient.

[0061] As can be seen from the above, based on the arrangement of the mounting groove 111, the guide rod base 110 has two opposite guide rod units 112. Figure 8 and Fig.10 The handle 210 has two guide holes 211 that are slidably fitted on 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 arranged on the guide rod unit 112. The handle 210 is slidably fitted between the two second radial protrusions 112c.

[0062] In the embodiment of the present application, the thickness of the middle portion 212 is less than the thickness of the clamping member 120. In this way, when the handle 210 is assembled on the guide rod base 110, based on the existence of the mounting groove 111, the two guide rod units 112 have a certain deformation ability from their roots. Therefore, by applying a slight extrusion force to the two guide rod units 112 to bring the two guide rod units 112 closer together, the handle 210 can easily pass through the second radial protrusion 112c. 2c, 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 go over the second radial protrusions 112c, that is, the two second radial protrusions 112c limit the handle 210.

[0063] In an embodiment of the present application, the movable part 200 also includes two wing rings 240 connected to the handle 210. When the operator drives the movable part 200 to move along the guide rod 100, the operator can insert two fingers into the wing rings 240 to clamp the handle 210 to facilitate the movement of the handle 210.

[0064] In a further technical solution, the two wing rings 240 may be a non-sealed structure. For details, see Figure 8The two wing rings 240 are provided with notches with opening directions roughly opposite to each other, and two fingers can be inserted into the wing rings 240 through the notches of the two wing rings 240, instead of only being able to insert fingers by threading, which increases the convenience of holding the movable part 200.

[0065] For further technical solutions, see Fig. 9 The two wing rings 240 are distributed on both sides of the handle 210, and the angle between the two wing rings 240 is an obtuse angle. When the operator holds the movable part 200, because there must be a certain angle between the two fingers, the two wing rings 240 distributed at an obtuse angle can better adapt to the shape of the fingers, can more effectively disperse the pressure on the fingers, reduce the pressure and discomfort on the fingers, and enhance a more comfortable holding experience. In addition, the two wing rings 240 at the obtuse angle can provide a larger contact area, can better fix the fingers, and reduce the shaking and sliding of the fingers during the holding process.

[0066] Furthermore, the two wing rings 240 face away from the locking member 230 , and the operator's fingers can extend into the two wing rings 240 from the side of the movable member 200 facing away from the locking member 230 , thereby avoiding the operator's discomfort caused by contact with the locking member 230 when holding the movable member 200 .

[0067] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0068] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. A body cavity blocking device, characterized in that: It comprises a guide rod (100), a movable part (200), an outer tube (300), a core wire (400) and an intercepting part (500); wherein: The distal end of the guide rod (100) has two clamping parts (121), the two clamping parts (121) are arranged opposite to each other and define a clamping gap (122) therebetween, the proximal end of the outer tube (300) extends into the clamping gap (122), and the two clamping parts (121) clamp the outer tube (300), and the width of the clamping gap (122) gradually decreases along a first direction, the first direction being the extension direction of the guide rod (100) from its proximal end to its distal end; The movable member (200) is movably arranged on the guide rod (100), the core wire (400) is inserted into 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 member (200); The intercepting member (500) is connected to the core wire (400) and the distal end of the outer tube (300), and the intercepting member (500) is configured to be deformed and block the body cavity when being pulled proximally by the core wire (400).

2. The body cavity occluding 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) radially penetrating the guide rod (100); the radial through hole (123) is distributed at the proximal end of the clamping gap (122) and is in communication with the clamping gap (122).

3. The body cavity occluding 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 the damping tube (600) corresponds to the clamping gap (122), and 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 occluding device according to claim 3, characterized in that: At least two first radial protrusions (610) are provided on the damping tube (600), and the clamping portion (121) is clamped between the two first radial protrusions (610).

5. The body cavity blocking device according to any one of claims 1 to 4, characterized in that: The guide rod (100) comprises a guide rod base (110) and a clamping member (120); wherein: The distal end of the guide rod base (110) is provided with a mounting groove (111), part of the clamping member (120) is arranged in the mounting groove (111), the two clamping parts (121) are arranged at the distal end of the clamping member (120), and the movable member (200) is slidably sleeved on the guide rod base (110); The clamping member (120) is provided with an avoidance hole (124) which penetrates along its axial direction, and the core wire (400) passes through the avoidance hole (124) and is connected to the movable member (200).

6. The body cavity occluding 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) is positioned and matched with the positioning recess (112a); And / or, the body cavity blocking device further comprises a locking knob (700), a threaded section (112b) is provided at the distal end of the guide rod base (110), and the locking knob (700) is threadedly matched with the threaded section (112b) so that the inner wall of the mounting groove (111) clamps the clamping member (120).

7. The body cavity occluding device according to claim 5, characterized in that: The movable part (200) comprises 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 avoidance hole (124).

8. The body cavity occluding 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 occluding device according to claim 8, characterized in that: The installation groove (111) extends along the axial direction of the guide rod (100), and the installation groove (111) penetrates the radial direction of the guide rod base (110), so that the guide rod base (110) has two guide rod units (112) arranged opposite to each other; The handle (210) has a guide hole (211) that is slidably fitted on the two guide rod units (112), and the handle (210) forms a middle part (212) between the two guide holes (211). The conduit (220) is connected to the middle part (212), and the thickness of the middle part (212) is smaller than the thickness of the clamping member (120).

10. The body cavity occluding device according to claim 7, characterized in that: The movable member (200) further comprises a locking member (230), wherein the locking member (230) is connected to the handle (210) to fix the core wire (400) inserted into the handle (210); The movable member (200) further comprises two wing rings (240) connected to the handle (210), the angle between the two wing rings (240) is an obtuse angle, and the two wing rings (240) face away from the locking member (230).

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