CN222426112U

CN222426112U - Body cavity plugging device

Info

Publication number: CN222426112U
Application number: CN202420877288.XU
Authority: CN
Inventors: 易清华
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2024-04-25
Filing date: 2024-04-25
Publication date: 2025-02-07
Anticipated expiration: 2034-04-25
Also published as: WO2025223490A1

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 interception part, wherein a clamping gap is defined at the distal end of the guide rod through two clamping parts, the 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 gradually decreases along a first direction, the first direction is the extending direction of the guide rod from the proximal end to the distal end of the guide rod, the movable part is movably arranged in the guide rod, the core wire penetrates into the outer tube, the proximal end of the core wire penetrates out of the outer tube and is connected with the movable part, the interception part is connected with the core wire and the distal end of the outer tube, the interception part is configured to deform when the core wire is pulled to the proximal end, so as to plug the body cavity.

Description

Body cavity plugging device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a body cavity plugging device.

Background

A body cavity blocking device is a medical instrument for closing or blocking a body cavity (such as a blood vessel or an organ) during a surgical procedure, and generally comprises a guide wire, a catheter and a blocking object, wherein one end of the guide wire passes through the lumen of the catheter and the blocking object, and the distal end of the blocking object is fixed with the guide wire, and the expanding blocking object can be axially compressed by pulling the proximal end of the guide wire, so that a plug-shaped blocking object is formed, and the body cavity blocking device can block and fix obstacles in the body cavity such as thrombus, stones and the like, so as to facilitate the operation of an operator.

In the related art, both the proximal end of the guide wire and the proximal end of the catheter are connected to the handle, however, there are cases where the core wire pulling damping is large when the handle is operated to pull the guide wire.

Disclosure of utility model

The utility model discloses a body cavity plugging device, which aims to solve the technical problem of larger core wire traction damping of the body cavity plugging device in the related technology.

In order to solve the problems, the utility model adopts the following technical scheme:

The application provides a body cavity plugging device, which comprises a guide rod, a movable part, an outer tube, a core wire and an interception part, wherein:

The distal end of the guide rod is provided with two clamping parts, the two clamping parts are oppositely arranged and define a clamping gap therebetween, the 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 gradually decreases along a first direction, and the first direction is the extending direction of the guide rod from the proximal end to the distal end of the guide rod;

The movable piece is movably arranged in the guide rod, the core wire penetrates through the outer tube, and the proximal end of the core wire penetrates out of the outer tube to be connected with the movable piece;

the interceptor member connects the core wire and the distal end of the outer tube, the interceptor member being configured to deform to occlude the body lumen when pulled proximally by the core wire.

Further, the distal end of the guide rod is further provided with radial perforations penetrating the guide rod radially, and the radial perforations are distributed at the proximal end of the clamping gap and are communicated with the clamping gap.

Further, the body cavity plugging device further comprises a damping tube, the damping tube is sleeved at the proximal end of the outer tube, the damping tube corresponds to the clamping gap, and the extension length of the damping tube is larger than that of the clamping gap in the first direction.

Further, at least two first radial protrusions are arranged on the damping tube, and the clamping part is clamped between the two first radial protrusions.

Further, the guide rod comprises a guide rod base body and a clamping piece, wherein the far end of the guide rod base body is provided with a mounting groove, parts of the clamping piece are arranged in the mounting groove, two clamping parts are arranged at the far end of the clamping piece, the movable piece is slidably sleeved on the guide rod base body, the clamping piece is provided with an avoidance hole which is communicated with the guide rod base body along the axial direction of the guide rod base body, and the core wire penetrates through the avoidance hole and is connected with the movable piece.

Further, one of the clamping piece and the inner wall of the mounting groove is provided with a positioning protrusion, the other one is provided with a positioning recess, the positioning protrusion is matched with the positioning recess in a positioning way, and/or the body cavity plugging device further comprises a locking knob, the distal end of the guide rod base body is provided with a threaded section, and the locking knob is matched with the threaded section in a threaded way, so that the inner wall of the mounting groove clamps the clamping piece.

Further, the movable piece comprises a handle and a guide pipe connected with the handle, the handle is sleeved on the guide rod base body in a sliding mode, the guide pipe is located in the mounting groove, and at least part of the guide pipe extends into the avoidance hole.

Further, two second radial protrusions are arranged on the guide rod base body, and the handle part is in sliding fit between the two second radial protrusions.

Further, the mounting groove extends along the axial direction of the guide rod, and penetrates through the radial direction of the guide rod base body, so that the guide rod base body is provided with two guide rod units which are oppositely arranged.

Further, the shank has guide holes slidably fitted on the two guide rod units, the shank forms an intermediate portion between the two guide holes, the guide pipe connects the intermediate portion, and the thickness of the intermediate portion is smaller than that of the clamping member.

Further, the movable member further comprises a locking member connected to the handle portion to fix the core wire extending into the handle portion.

Further, the movable part further comprises two wing rings connected with the handle part, an included angle between the two wing rings is an obtuse angle, and the two wing rings face away from the locking part.

The technical scheme adopted by the utility model can achieve the following beneficial effects:

According to the body cavity plugging device, the clamping gap formed by the two clamping parts is a wedge-shaped space with a far narrow width and a near wide width, so that when the clamping part clamps the outer tube, the part, corresponding to the far end of the clamping gap, of the outer tube is abutted against the core wire, and the part, corresponding to the near end of the clamping gap, of the outer tube is in a separated state with the core wire.

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 to the outer tube by the clamping part is gradually increased from near to far, so that a concave part matched with the clamping part is easily formed on the outer tube, the concave part can play a certain positioning and anti-falling role on the outer tube, movement of the outer tube relative to the clamping part is prevented, and the stability of connection of the outer tube and the guide rod is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of a body lumen occluding device according to an embodiment of the present application;

FIG. 2 is a schematic illustration of the connection of a guide rod to an outer tube according to an embodiment of the present application;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is a schematic view of a clamping member according to an embodiment of the present application;

FIG. 5 is an enlarged partial schematic view at B in FIG. 4;

FIG. 6 is a schematic view of a guide bar base according to an embodiment of the present application;

FIG. 7 is a schematic view of a guide bar according to an embodiment of the present application;

FIG. 8 is a schematic view of a movable member according to an embodiment of the present application;

FIG. 9 is a second schematic view of a movable member according to an embodiment of the present application;

FIG. 10 is a schematic view of an assembly of a guide rod, a moveable member and a locking knob according to an embodiment of the present application.

In the figure:

100. Guide rod 110, guide rod base 111, mounting groove 112, guide rod unit 112a, positioning recess 112b, screw thread section 112c, second radial protrusion 120, clamping piece 121, clamping part 122, clamping gap 123, radial perforation 124, avoiding hole 125, positioning protrusion 126, drawing gap 200, moving piece 210, handle 211, guide hole 212, middle part 220, guide pipe 230, locking piece 240, wing ring 300, outer tube 400, core wire 500, interception piece 600, damping tube 610, first radial protrusion 700, locking knob.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The body cavity blocking device provided by the embodiment of the application is described in detail below by referring to fig. 1 to 10, and specific embodiments and application scenarios thereof.

Referring to fig. 1, an embodiment of the present application discloses a body lumen occluding device comprising a guide rod 100, a movable member 200, an outer tube 300, a core wire 400 and an interceptor member 500. Wherein, the guide rod 100 can provide a mounting foundation for the movable member 200, the movable member 200 is slidably sleeved on the guide rod 100, the guide rod 100 and the movable member 200 together form a handle structure of the body cavity plugging device, and the proximal end of the outer tube 300 and the proximal end of the core wire 400 are both connected to the handle structure.

Specifically, the proximal end of the outer tube 300 is fixedly connected with the guide rod 100, the core wire 400 is inserted into the outer tube 300, the proximal end of the core wire 400 is connected with the movable member 200 after passing out of the outer tube 300, and the distal end of the core wire 400 is connected with the intercepting member 500 after passing out of the outer tube 300. The interceptor member 500 may be a flexible sheet structure, the interceptor member 500 connecting the distal end of the core wire 400 with the distal end of the outer tube 300, the interceptor member 500 being capable of being deformed as the operation movable member 200 slides on the guide rod 100.

When the movable member 200 is operated to move proximally along the guide rod 100, the core wire 400 pulls the interceptor member 500 to move proximally, the outer tube 300 is not pulled, and the position of the part where the interceptor member 500 is connected with the outer tube 300 is basically unchanged, so that the interceptor member 500 in the unfolded state is compressed in the axial direction to generate folds, the radial dimension of the interceptor member 500 is increased to have an interceptor effect, and further, the body cavity is occluded, and when the movable member 200 is operated to move distally along the guide rod 100, the movable member 200 pushes the core wire 400 to move distally, the interceptor member 500 in the compressed folds is pulled distally by the core wire 400 to be unfolded and deformed again into a flexible sheet-shaped structure, and thus, the occlusion effect is lost, and the interceptor member 500 has good trafficability.

In the embodiment of the present application, the proximal end of the outer tube 300 is connected to the distal end of the guide bar 100 and is fixedly connected to the guide bar 100. Specifically, referring to fig. 2 and 3, the distal end of the guide rod 100 has two clamping portions 121, the two clamping portions 121 are disposed 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 a locking force can be applied to the two clamping portions 121 by an external locking member to enable the two clamping portions 121 to clamp the proximal end of the outer tube 300, thereby connecting and fixing the outer tube 300 to the guide rod 100.

In the embodiment of the present application, the width of the clamping gap 122 gradually decreases along the first direction, which is the extending direction of the guide rod 100 from the proximal end to the distal end thereof. In this way, the clamping gap 122 formed by the two clamping portions 121 is a wedge-shaped space with a far narrow width, so that when the clamping portion 121 clamps the outer tube 300, the portion of the outer tube 300 corresponding to the far end of the clamping gap 122 is abutted against the core wire 400, and the portion of the outer tube 300 corresponding to the near end of the clamping gap 122 is separated from the core wire 400, compared with the design mode that the clamping gap 122 keeps the width consistent, the length of the portion of the outer tube 300 abutted against the core wire 400 can be obviously reduced, the friction force between the outer tube 300 and the core wire 400 is reduced, and the pulling damping of the core wire 400 is reduced, meanwhile, based on the fact that the clamping gap 122 is a wedge-shaped space, the clamping force exerted by the clamping portion 121 to the outer tube 300 is gradually increased from near to far, so that a concave portion matched with the clamping portion 121 is easily generated on the outer tube 300, the concave portion can play a certain positioning and anti-falling role on the outer tube 300, the movement of the outer tube 300 relative to the clamping portion 121 is prevented, and the stability of the connection of the outer tube 300 and the guide rod 100 is increased.

In the embodiment of the present application, referring to fig. 1 and 2, the body lumen occluding device further comprises a locking knob 700, and the locking knob 700 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 screwed on the distal end of the guide rod 100, and as the locking knob 700 is screwed on the guide rod 100, the inner side wall of the locking knob 700 gradually abuts against the two clamping portions 121, so that a locking force is applied to the two clamping portions 121, so that the two opposite clamping portions 121 can abut against each other to perform a clamping constraint function on the outer tube 300.

Referring to fig. 3, in a further embodiment, the proximal end of the guide rod 100 is further provided with radial holes 123 penetrating the guide rod 100 radially, the radial holes 123 are distributed at the proximal end of the clamping gap 122, and the radial holes 123 are communicated with the clamping gap 122, and in an alternative embodiment of the present application, the radial holes 123 may be square holes or circular holes, which is not limited in particular.

Based on the radial perforation 123, the distal end of the guide rod 100 can form the two clamping portions 121, and the two clamping portions 121 can have a certain deformation capability of approaching or separating from each other, that is, the two clamping portions 121 can be pressed close to each other by being pressed and deformed during the rotation and locking of the locking knob 700. Meanwhile, the radial perforation 123 may further provide a receiving space for the proximal end portion of the outer tube 300, that is, the proximal end portion of the outer tube 300 may extend into the radial perforation 123 through the clamping gap 122, so that the clamping wall surface of the clamping gap 122 may be clamped on the outer tube 300 along the whole section of the first direction, and the stability of clamping the outer tube 300 may be increased.

With continued reference to fig. 3, the body cavity plugging device may further include a damper tube 600, the damper tube 600 is sleeved at the proximal end of the outer tube 300, and the damper tube 600 corresponds to the clamping gap 122, the extension length of the damper tube 600 is greater than the extension length of the clamping gap 122 in the first direction, and the two clamping portions 121 are clamped on the damper tube 600 to clamp the outer tube 300.

In the embodiment of the present application, the damping tube 600 is preferably a structural member made of an elastic material, for example, the damping tube 600 may be a rubber tube or a silicone tube, and the damping tube 600 may be connected and fixed with the outer tube 300 by way of gluing, and the damping tube 600 made of an elastic material generally has a larger friction coefficient, and may provide better friction resistance, so that when the two clamping portions 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 portions 121 for clamping the outer tube 300. In addition, the damping tube 600 can provide an additional protection layer, so that the core wire 400 can be prevented from being directly subjected to the clamping force, and thus the stress to which the core wire 400 is subjected can be reduced, and the core wire 400 is prevented from being damaged.

In a further technical solution, please continue to refer to fig. 3, at least two first radial protrusions 610 are provided on the damper tube 600, the clamping portion 121 is clamped between the two first radial protrusions 610, and the first radial protrusions 610 are in limit fit with the two clamping portions 121 along the first direction. When the damper tube 600 is clamped between the two clamping portions, the first radial protrusions 610 at both ends of the damper tube 600 can restrict the movement of the damper tube 600 in the axial direction thereof, ensuring that the damper tube 600 is maintained at the correct position, thereby increasing the stability of the clamping of the outer tube 300 by the clamping portion 121, and preventing the sliding or displacement of the outer tube 300 during the clamping process.

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

Specifically, referring to fig. 4 to 8, the guide rod 100 includes a guide rod base 110 and a clamping member 120, wherein, referring to fig. 6, a mounting groove 111 is formed at a distal end of the guide rod base 110, the mounting groove 111 is formed at a distal end of the guide rod base 110 and extends toward a proximal end of the guide rod base 110, so as to form a containing space in the guide rod base 110, a portion of the clamping member 120 is disposed in the mounting groove 111 to be assembled and fixed with the guide rod base 110, 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 disposed at portions of the clamping member 120 exposed at the guide rod base 110.

In the embodiment of the present application, referring to fig. 4, the portion of the clamping member 120 extending into the mounting groove 111 has a plurality of casting units 120a distributed along the axial direction thereof, where a drawing gap 126 exists between each casting unit 120a, and each casting unit 120a has an injection hole during injection molding. In this way, the use of multiple casting holes in the injection molding process of the clamping member 120 can provide a more uniform molten raw material, reduce the possibility of under-casting or over-casting, and help to improve the strength and stability of the clamping member 120.

Referring to fig. 2, the movable member 200 is slidably sleeved on the guide rod base 110, and it can be understood that the movable member 200 is distributed at the proximal end of the clamping member 120. Referring to fig. 5, the clamping member 120 is provided with a through hole 124 penetrating along an axial direction thereof, the proximal end of the core wire 400 passes through the through hole 124 and is connected with the movable member 200, so that 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 and the proximal hole of the outer tube 300 have good coaxiality, so that the core wire 400 is not easy to bend in a pulling or pushing process, and smoothness of operation is ensured, and meanwhile, the guide rod base 110, the clamping member 120 and the movable member 200 are coaxially arranged, so that the space occupation of a handle structure formed by the three is small, and the holding operation is convenient for an operator.

In the embodiment of the present application, referring to fig. 6 and 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 guide rod units 112 disposed opposite to each other, and the clamping member 120 is clamped between the two guide rod units 112.

In order to realize the clamping and fixing of the two guide rod units 112 to the clamping member 120, the distal end of the guide rod unit 112 is provided with a threaded section 112b, and the locking knob 700 is in threaded engagement with the threaded section 112b, that is, the locking knob 700 applies a locking force to the two clamping portions 121 to clamp and fix the outer tube 300, and simultaneously locks the clamping member 120 clamped between the two guide rod units 112, so that the handle has multiple purposes and the compactness of the whole handle structure can be improved.

In a further technical solution, 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 matched with the positioning recess 112a in a positioning manner, so that the stability of assembly connection of the clamping member 120 and the clamping member 120 can be improved, and dislocation and shaking of the guide rod base 110 and the clamping member 120 are avoided. In a preferred embodiment, the positioning protrusion 125 is provided to the holder 120 and the positioning recess 112a is provided to the inner wall of the mounting groove 111, so that the positioning protrusion 125 and the positioning recess 112a are more easily processed when they are formed.

Referring to fig. 8 and 10, in the embodiment of the present application, the movable member 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 avoidance hole 124.

An accommodating space communicated with the catheter 220 is arranged in the handle 210, and the proximal end of the core wire 400 extends into the accommodating space through the catheter 220 and is fixed relative to the handle 210. For example, referring to fig. 8, the movable member 200 further includes a locking member 230 in threaded engagement with the handle 210, the locking member 230 may be in threaded engagement with the handle 210, and a portion of the locking member 230 may extend into the receiving space and abut against the core wire 400, so that the core wire 400 extending into the handle 210 is fixed. Of course, in other alternative embodiments of the present application, after the core wire 400 extends into the handle 210, the core wire 400 may be connected and fixed to the handle 210 by means of glue sealing, tying, etc., so long as the connection and fixation between the core wire 400 and the handle 210 can be achieved.

In the embodiment of the present application, the core wire 400 is wrapped inside the catheter 220 by the design of the catheter 220, and during the process of pushing the core wire 400 to move, the catheter 220 can avoid the core wire 400 from bending or twisting against the proximal end of the clamping member 120, so as to ensure that the core wire 400 maintains a stable moving state during the moving process, and further ensure that the intercepting member 500 can undergo the expected deformation. Meanwhile, due to the design of the catheter 220, friction and resistance between the core wire 400 and the avoidance holes 124 can be reduced, so that the pushing process is smoother and more efficient.

As can be seen from the foregoing, based on the arrangement of the mounting groove 111, the guide bar base 110 has two opposite guide bar units 112, and with continued reference to fig. 8 and 10, the shank 210 has two guide holes 211 slidably fitted on the two guide bar units 112, the shank 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 bar base 110 has two second radial protrusions 112c provided on the guide bar units 112, and the shank 210 is slidably fitted between the two second radial protrusions 112 c.

In the embodiment of the present application, the thickness of the middle portion 212 is smaller than the thickness of the clamping member 120, so that when the handle 210 is assembled on the guide bar base 110, the two guide bar units 112 have a certain deformability from the root portions thereof based on the existence of the mounting groove 111, and therefore, by applying a slight pressing force to the two guide bar units 112 to bring the two guide bar units 112 close to each other, 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 bar units 112, and during the rotation of the locking knob 700, the two guide bar units 112 are clamped against the clamping member 120, and the two guide bar units 112 are difficult to deform again based on the supporting and resisting action of the clamping member 120 on the two guide bar units 112 and the locking action of the locking knob 700, and the handle 210 is difficult to pass over the second radial protrusion 112c, i.e., the two second radial protrusions 112c play a limiting role on the handle 210.

In the embodiment of the present application, the movable member 200 further includes two wing rings 240 connected to the handle 210, and when the operator drives the movable member 200 to move along the guide rod 100, two fingers can extend into the wing rings 240 to clamp the handle 210, so as to facilitate pushing the handle 210 to move.

In a further technical solution, the two wing rings 240 may be in a non-sealing structure, specifically, referring to fig. 8, notches with openings approximately opposite to each other are provided on the two wing rings 240, and two fingers can extend into the wing rings 240 through the notches of the two wing rings 240, instead of just extending into the fingers in a penetrating manner, so that convenience in holding the movable member 200 is increased.

In a further technical solution, please refer to fig. 9, two wing rings 240 are distributed on two sides of the handle 210, and an included angle between the two wing rings 240 is an obtuse angle, so that when an operator holds the movable member 200, because a certain included angle is necessarily present between two fingers, the two wing rings 240 distributed at the obtuse angle can better adapt to the shape of the fingers, can more effectively disperse the pressure of the fingers, reduce the compression and discomfort to the fingers, and promote more comfortable holding experience. In addition, the two wing rings 240 of the obtuse angle portion can provide a larger contact area, can better fix the fingers, and reduce the shaking and sliding of the fingers during the holding process.

Further, the two wing rings 240 are opposite to the locking member 230, and the fingers of the operator can extend into the two wing rings 240 from the side of the movable member 200 opposite to the locking member 230, so as to avoid discomfort caused by the operator contacting the locking member 230 when holding the movable member 200.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.

Claims

1. The body cavity blocking device is characterized by comprising a guide rod (100), a movable piece (200), an outer tube (300), a core wire (400) and an interception piece (500), wherein:

The distal end of the guide rod (100) is provided with two clamping parts (121), the two clamping parts (121) are oppositely arranged and define a clamping gap (122) between the two clamping parts, the proximal end of the outer tube (300) extends into the clamping gap (122), the two clamping parts (121) clamp the outer tube (300), the width of the clamping gap (122) gradually decreases along a first direction, and the first direction is the extending direction of the guide rod (100) from the proximal end to the distal end of the guide rod;

The movable piece (200) is movably arranged in the guide rod (100), the core wire (400) is arranged in the outer tube (300) in a penetrating mode, and the proximal end of the core wire (400) penetrates out of the outer tube (300) to be connected with the movable piece (200);

The interceptor member (500) connects the core wire (400) and the distal end of the outer tube (300), the interceptor member (500) being configured to deform to occlude a body lumen when pulled proximally by the core wire (400).

2. The body lumen occluding device of claim 1, wherein the distal end of the guide rod (100) is further provided with radial perforations (123) extending radially through the guide rod (100), the radial perforations (123) being distributed proximally of the clamping gap (122) and being in communication with the clamping gap (122).

3. The body lumen occluding device of claim 1, further comprising a dampening tube (600), the dampening tube (600) being sleeved on the proximal end of the outer tube (300), and the dampening tube (600) corresponding to the clamping gap (122), an extension of the dampening tube (600) being greater than an extension of the clamping gap (122) in a first direction.

4. The body lumen occluding device of claim 3, wherein 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 occlusion device of any of claims 1-4, wherein the guide rod (100) comprises a guide rod base (110) and a clamp (120), wherein:

The guide rod comprises a guide rod base body (110), wherein a mounting groove (111) is formed in the distal end of the guide rod base body (110), a part of a clamping piece (120) is arranged in the mounting groove (111), two clamping parts (121) are arranged at the distal end of the clamping piece (120), and a movable piece (200) is sleeved on the guide rod base body (110) in a sliding mode;

the clamping piece (120) is provided with an avoidance hole (124) which is penetrated along the axial direction of the clamping piece, and the core wire (400) passes through the avoidance hole (124) and is connected with the movable piece (200).

6. The body lumen occluding device of claim 5, wherein one of the clamping member (120) and an inner wall of the mounting groove (111) is provided with a positioning protrusion (125), the other is provided with a positioning recess (112 a), and the positioning protrusion (125) is in positioning engagement with the positioning recess (112 a);

and/or, the body cavity plugging device further comprises a locking knob (700), a threaded section (112 b) is arranged at the distal end of the guide rod base body (110), and the locking knob (700) is in threaded fit with the threaded section (112 b) so that the inner wall of the mounting groove (111) clamps the clamping piece (120).

7. The body lumen occluding device of claim 5, wherein the moveable member (200) comprises a handle portion (210) and a conduit (220) coupled to the handle portion (210), the handle portion (210) is slidably disposed over the guide rod base (110), the conduit (220) is disposed within the mounting slot (111), and at least a portion of the conduit (220) extends into the relief aperture (124).

8. The body cavity occlusion device of claim 7, wherein said guide rod base (110) is provided with two second radial protrusions (112 c), said stem portion (210) being a sliding fit between said two second radial protrusions (112 c).

9. The body lumen occluding device according to claim 8, wherein the mounting groove (111) extends in an axial direction of the guide rod (100), and the mounting groove (111) penetrates a radial direction of the guide rod base body (110) such that the guide rod base body (110) has two guide rod units (112) disposed opposite to each other;

The handle (210) is provided with guide holes (211) which are in sliding fit with the two guide rod units (112), the handle (210) forms an intermediate part (212) between the two guide holes (211), the guide pipe (220) is connected with the intermediate part (212), and the thickness of the intermediate part (212) is smaller than that of the clamping piece (120).

10. The body lumen occluding device of claim 7, wherein the moveable member (200) further comprises a locking member (230), the locking member (230) being coupled to the handle (210) to secure the core wire (400) extending into the handle (210);

The movable part (200) further comprises two wing rings (240) connected with the handle part (210), an included angle between the two wing rings (240) is an obtuse angle, and the two wing rings (240) are opposite to the locking part (230).