CN214549500U

CN214549500U - Intraluminal implantable medical device

Info

Publication number: CN214549500U
Application number: CN202022505050.9U
Authority: CN
Inventors: 余遵雄; 陈奕龙
Original assignee: Shenzhen Kyd Biomedical Technology Co ltd
Current assignee: Shenzhen Kyd Biomedical Technology Co ltd
Priority date: 2019-11-04
Filing date: 2020-11-03
Publication date: 2021-11-02
Anticipated expiration: 2030-11-03
Also published as: CN112244927A

Abstract

The invention relates to a medical appliance implanted into a lumen through an intervention operation, and particularly discloses an implantable medical appliance in the lumen, which comprises a central piece and an elastic part with the periphery, wherein the elastic part is formed by arranging a plurality of rod-shaped supporting bodies divided from the central piece to one side of the elastic part; the plurality of support bodies are divided from the central piece, extend towards the center of the elastic part to form a cross arrangement, and extend towards the periphery to form a disc-shaped structure, wherein the support bodies have a larger width at the positions close to the cross arrangement than at the positions of the cross arrangement, or the support bodies have a smaller width at the positions close to the outermost sections far away from the central piece than at the outermost sections, and the anchoring structures formed by the support bodies with different widths have good anchoring effect.

Description

Intraluminal implantable medical device

Technical Field

The invention relates to the technical field of intraluminal implantable medical devices, in particular to a medical device implanted into a lumen through an intervention operation, such as a left atrial appendage occluder.

Background

Applicants 'prior PCT patent publication No. WO2017114348A discloses a left atrial appendage occluder, WO2017114348A being incorporated herein in its entirety, which can be delivered via a delivery catheter system to create a delivery pathway in a vascular channel to the left atrial appendage outside of a subject's body, and which can be delivered to a left atrial appendage for endoluminal occlusion to treat atrial fibrillation. The occluder comprises an anchoring disc and a blocking disc, an example of the occluder is given in fig. 1 of the present application, wherein the anchoring disc 101 can be formed by a plurality of rod members 102 cut from a nickel titanium metal tube, one end of each rod member 102 is gathered in a tubular central part 103, the other end is a free end, and the rod members on the free end side are arranged in a crossed manner to form an elastic disc-shaped structure. The elastic disk structure of the anchoring disk can be pressed and bound by the inner cavity wall of the left auricle, so that the occluder is fixed on the left auricle, and the occlusion disk 201 connected with the anchoring disk is positioned at the opening of the left auricle and seals the left auricle, namely the left atrium and the left auricle are isolated by the occlusion disk, which can be seen in fig. 2 of the application.

Wherein, in order to keep the anchoring disc sufficiently elastic to be compressed to a minimum for delivery in the duct and to be able to expand back to the desired disc-shaped anchoring configuration after being released outwards through the duct, it is desirable that the plurality of rod members constituting the disc-shaped configuration, when arranged crosswise, reserve a suitable play space for the individual rod members, which play can be understood as the elastic deformation of the rod members caused by the movement of the free ends of the rods towards any direction. However, an overly loose cross-over arrangement may allow for an undesirably large relative play space between adjacent rod members, which may result in a disc-shaped anchoring structure having a weak ability to maintain the disc shape, thereby resulting in a decreased or insufficient ability to position the anchoring disc within the left atrial appendage.

Disclosure of Invention

It is an object of the present invention to provide an intraluminal implantable medical device having a specific anchoring arrangement so that the medical device can be positioned within the lumen in which it is implanted.

Embodiments of intraluminal implantable medical devices are also provided that effectively reduce the risk of the medical device migrating along the lumen or tilting toward a side of the lumen wall.

The medical device comprises a central piece and an elastic part with an outer periphery, wherein the elastic part is formed by arranging a plurality of rod-shaped support bodies which are divided from the central piece to one side of the elastic part; the plurality of supporting bodies are divided from the central piece, extend towards the center of the elastic part to form a cross arrangement, and extend towards the periphery to form a disc-shaped structure respectively, and the supporting bodies have larger width at the positions adjacent to the cross arrangement than at the positions of the cross arrangement.

In one embodiment, one end of the support body at the central member is a proximal end of the support body and the other end of the support body is a distal end, the support body having a greater width at its distal side adjacent the cross-aligned position than at the cross-aligned position.

In another embodiment, the support body has a greater width on both sides thereof adjacent to the cross-aligned position than at the cross-aligned position.

Optionally, the width of the support body at the position adjacent to the cross arrangement position is 1.1-5 times of the width at the position of the cross arrangement position. For example, the width of the support body at the position adjacent to the crossing arrangement position may be 1.75 to 3.5 times the width at the position of the crossing arrangement.

In a further development, the support body has a curvature in the cross-aligned position or in the disk-shaped configuration, which curvature has a smaller width than its adjacent straight sections.

The supports in the disc-shaped structure of the intraluminal implantable medical device may be selectively fixedly or non-fixedly attached to each other.

The present invention provides a preferred embodiment wherein the supports are not fixedly connected to each other. Compared with the support body in the fixed connection mode, the support body in the unfixed connection mode has larger deformation space in the disc-shaped structure, and the disc-shaped structure can better adapt to the inner periphery of the implanted tube cavity.

In a further improvement, each adjacent support body in the disc-shaped structure is movably connected.

For example, adjacent supports within the disc-like structure may be articulated by a string, mesh or elastic connection, which may be an elastic polymer member, spring, or the like.

In a preferred embodiment, the support body is provided with through holes at wider sections for binding of a string or net, or adjacent support bodies in the disc-shaped structure are movably connected at wider sections by the elastic connecting piece.

In another preferred embodiment, the disc-shaped structure is covered with a net or elastic membrane which is circumferentially fixed to the wider section of the support body.

The invention also provides another medical device which can be implanted in a tube cavity, comprising a central piece and an elastic part with an outer periphery, wherein the elastic part is formed by arranging a plurality of rod-shaped supporting bodies which are divided from the central piece to one side of the elastic part; the support bodies have outermost sections remote from the center piece, and the at least one support body has a smaller width at its location adjacent to the outermost sections than the outermost sections.

The invention provides an embodiment of a medical apparatus, wherein the plurality of supporting bodies extend to the periphery respectively to form annular arrangement after being separated from the central piece, and the elastic part has a shape similar to a cone.

In another embodiment of the present invention, the plurality of supporting bodies are separated from the central member and then extend around the central member to form a disc-shaped structure with or without crossing.

In a preferred embodiment, one end of the support body at the center piece is a proximal end of the support body, the other end of the support body is a distal end, and the support body has a smaller width at a position adjacent to the outermost section at the distal end side thereof than the outermost section.

Based on the above description of any one of the intraluminal implantable medical devices, the present invention provides a further improved embodiment, wherein the central member is a tubular member, and the plurality of support bodies are led out from a side wall of a nozzle at one end of the tubular member. For example, the central member and the support body are of unitary construction.

The intraluminal implantable medical device of the present invention may further comprise a functional part connected to the other end of the tubular member.

In one embodiment, the implantable medical device is an occluder and the functional part is an occluding disk for occluding the lumen in which the occluder is implanted.

In another embodiment, the medical device is a filter, and the functional part is a filter body for forming a filtering function in the implanted lumen.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Figure 1 is a schematic diagram of a prior art left atrial appendage occluder;

FIG. 2 is a schematic view of a left atrial appendage occluder implanted in a position to occlude the left atrial appendage;

fig. 3 is a schematic structural diagram of a left atrial appendage occluder provided by the present invention;

figure 4 is a schematic view of another angle of the left atrial appendage occluder of figure 3;

FIG. 5 is a schematic view showing a state in which a filter is implanted in a lumen of a blood vessel;

fig. 6 shows an example of the structure of a portion a of the support body of fig. 5.

In the drawings, reference numerals are explained as follows:

1. a blood vessel; 101. an anchor plate; 102. a support body; 1021. a first wide section; 1022. a second wide section; 103. a center piece; 104. a cross arrangement position; 105. a filter body; 201. a plugging disc.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention firstly provides an anchoring structure which can be used for forming an implantable medical device in a lumen, so that the medical device can be anchored in the implanted lumen, and the positioning implantation of the medical device is realized.

Referring to fig. 3 and 4, there is shown a left atrial appendage occluder having an anchoring structure consisting of a central member 103 and an elastic portion having an outer periphery, the elastic portion being formed by an arrangement of a plurality of rod-shaped support bodies 102 branching off the central member 103 to one side thereof; the plurality of support members 102 are divided from the central member 103 and then extend toward the center of the elastic portion to form a cross arrangement, and then extend toward the periphery to form a disk-shaped structure, wherein the support members 102 have a greater width at the positions adjacent to the cross arrangement 104 than at the positions adjacent to the cross arrangement 104.

The support 102 has a greater width adjacent the cross-aligned locations 104 than adjacent the cross-aligned locations 104. in one aspect, the wider sections may improve the support capability of the support 102. the smaller width of the support 102 at the cross-aligned locations facilitates the cross-shaping process of adjacent supports 102, and may more easily achieve a desired cross-aligned configuration, such as providing some curvature. On the other hand, in the vicinity of the crossing arrangement position 104, the wider sections of the adjacent struts 102 form a smaller movement space, more importantly, the wider sections are difficult to cross the crossing arrangement position 104 in the longitudinal direction of the struts 102, and the adjacent struts 102 are mutually limited in the width direction of the struts 102, so that a disk-shaped structure with a more stable form can be formed, which contributes to the improvement of the anchoring ability of the elastic part in the lumen.

For convenience of description, one end of the support body 102 located at the central member 103 is referred to as a proximal end of the support body 102, and the other end of the support body 102 is referred to as a distal end. Wherein fig. 3 and 4 show that the support body 102 has a larger width at its distal side adjacent to the cross arrangement position 104 than at the cross arrangement position 104, i.e. the first wide section 1021 of the support body 102 has a larger width than the support body 102 at the cross arrangement position 104.

However, one skilled in the art may also choose to have support 102 with a greater width on both sides adjacent to cross-aligned locations 104 than at cross-aligned locations 104.

Optionally, the width of the support 102 adjacent to the cross arrangement position 104 is 1.1-5 times the width of the support at the cross arrangement position 104, and a preferred width ratio is 1.2-2 times. One skilled in the art can select as desired.

To form the desired disk-like structure or cross-wise arrangement of the supports 102, the supports 102 may have curved segments in the cross-wise arrangement position 104 or disk-like structure. The present invention provides a preferred embodiment in which the curved section has a smaller width than its adjacent straight section. For example, referring to fig. 3 and 4, the first wide section 1021 and the second wide section 1022 are straight sections having a greater width than the curved section between the two sections.

The first wide section 1021 and the second wide section 1022 can be considered as a stable body, which helps each support 102 in the cross arrangement maintain a stable anchoring structure. The stabilizer is arranged along the length direction of the support body, and a plurality of stabilizers which are distributed at intervals can be arranged on a single support body. The stabilizer has a greater width than the non-constituent stabilizer portion of the support, which may be manifested as a difference in the diameter, width or thickness of the rod when the support is in the form of a rod.

Further, it is also possible to provide an embodiment of the anchoring structure in which a plurality of rod-shaped supporting bodies 102 are branched from one side of the center member 103 and extend all around to form a disk-shaped structure, respectively. The support body 102 is provided with at least two stabilizing bodies spaced apart. The supporting bodies 102 may be gathered together to form an intersection in the form of fig. 3 and 4, or the supporting bodies 102 may not be intersected, for example, a plurality of rod-shaped supporting bodies 102 are divided from one side of the central member 103 and then directly extend to the periphery to form a disk-shaped structure.

The provision of a stabilizer is advantageous for maintaining stability of the anchoring structure without solid connection between the supports 102. For example, the larger width or volume of the stabilizer itself creates a space occupying effect, thereby reducing the active space of the support body, while the stabilizer also makes deformation or displacement of the support body more difficult, which helps maintain the spatial arrangement of the support bodies 102.

In addition, since the cross-winding is difficult to form between the supporting members at the position of the stabilizer, the stabilizer may prevent the undesired winding from being formed between the supporting members, and particularly, when all the supporting members are gathered, for example, when the device is in a delivery state built in the delivery catheter or the device is taken in the delivery catheter, the predetermined anchoring structure cannot be formed due to the winding between the supporting members, and the anchoring function is weakened or lost.

The stabilizer can be arranged according to the shape of the support body or the mutual arrangement mode between the support bodies. In one example of the arrangement, the first wide section 1021 is used as a first stabilizer and is arranged at a position adjacent to the crossing arrangement position 104 of the supports, which is especially helpful for stabilizing the crossing arrangement. Referring to fig. 3 and 4, the first stabilizer forms a boat anchor-like effect in the individual support, the greater weight of which stabilizes the support at the cross-aligned position 104. In addition, the first stable body is difficult to deform and displace, and the single support body can be effectively prevented from being separated from the two support bodies crossed with the single support body.

As another example of the arrangement, the portion of the support body constituting the outer periphery of the disk-shaped anchoring structure is provided with the second wide section 1022 as the second stabilizer, which contributes to improving the stable anchoring effect of the individual support bodies. Referring to fig. 3 and 4 again, the second stabilizer forms the outer periphery of the disc structure, and may contact and press against the inner wall of the lumen into which the device is implanted, for example, when the lumen is left atrial appendage or artery, the second stabilizer may repeatedly contract and expand with the heart beat, the force applied to the support body is vector, and the magnitude and direction are constantly changed, and the second stabilizer may remain attached to the inner wall of the lumen and is not easily deformed, and thus may serve as a stable stress point of the support body, thereby maintaining the single support body stably anchored to the inner wall of the lumen, and avoiding the displacement of the support body.

Another arrangement, again referring to fig. 3 and 4, includes: the first wide section 1021 is used as a first stabilizing body, the second wide section 1022 is used as a second stabilizing body, and in a single supporting body, the first stabilizing body and the second stabilizing body are positioned in different extending directions of the supporting body, so that the supporting body is helped to maintain stable shape in a space form, and further a disc structure formed by the arrangement of the supporting bodies can be kept. It is obviously also possible to provide more stabilizing bodies on a single support, each stabilizing body being located in a different extension direction of the support.

When the support body is formed into a disc structure in a crossed arrangement manner, the shape of the support body shown in fig. 3 and 4, the first wide section 1021 as a first stabilizing body, and the second wide section 1022 as a second stabilizing body are preferred embodiments, so that the deformation stress at the root of the support body or the crossed position of the support body can be reduced, and the risk of fatigue fracture of the support body can be greatly reduced. Have the curved section of arc that the relatively more narrow of the steady body between first steady body and the second steady body, this curved section of arc has the cushioning effect, can reduce the impact of the pressure that the lumen was applyed to the supporter, weakens the biggest deformation stress of supporter root or supporter crossing position department. The first stabilizer obviously serves to reinforce the arc-shaped bending section, and the transmission of force to the root of the support body or the crossing position of the support body is hindered.

In each embodiment, the stabilizer is preferably disposed on the straight section of the support body along the length direction of the support body, that is, the stabilizer may not be disposed on the curved section of the support body. In one embodiment, the length direction of the stabilizer is the same as the length direction of the straight section of the support body, and the two may have the same or different thicknesses, but different widths.

The support body may be selected from nitinol materials, stainless steel, cobalt-based alloys, and even polymeric materials having some strength and toughness.

The support body may be provided in the shape of a rod as shown in fig. 3 and 4, and may have a cross-sectional shape of a circle, an ellipse, or a square.

In one example, each support body and the central member 103 are cut from a tube, the central member 103 can be an end of the tube, and each support body is cut from the circumference of the tube and then formed to form the anchoring structure, as shown in fig. 3 and 4, for example. When the tubing is nitinol, the thickness of the alloy tube may be selected, for example, to be in the range of 0.2mm to 0.3mm, for example 0.25mm wall thickness. Accordingly, the first and second

wide sections

1021, 1022 constituting the stabilizer body may have a rod width ranging from 0.7mm to 1.1mm, and the other portions of the support body may have a rod width ranging from 0.2mm to 0.4 mm.

It should be noted that, based on the description of the present application, a person skilled in the art may select the processing support 102 to have a different disk-shaped structure as long as it can form the outer periphery of the elastic portion. Wherein, the supporting bodies 102 in the disc-shaped structure can be connected fixedly or not fixedly.

The present invention provides a preferred disc-like structure with no fixed connection between the supports 102. Compared with the support body 102 in the fixed connection mode, the support body in the non-fixed connection mode has larger deformation space in the disc-shaped structure, and the disc-shaped structure can be better adapted to the inner periphery of an implanted tube cavity.

In a more preferred embodiment of the disk-shaped structure, each adjacent support 102 within the disk-shaped structure is articulated. For example, each adjacent support 102 within the disk-shaped structure may be articulated by a string, mesh, or elastic connection, which may be an elastic polymer member, spring, or the like.

More specifically, the support body 102 may optionally be provided with through holes in wider sections for the binding of a string or mesh. Alternatively, adjacent supports 102 in the disc-like structure are articulated at wider sections by elastic connections. Still alternatively, the disc-shaped structure is covered with a net or elastic membrane which is circumferentially fixed to the wider section of the support 102.

Taking the disc-shaped structure shown in fig. 3 and 4 as an example, the first wide section 1021 and the second wide section 1022 may be provided with the through holes for binding, and the adjacent support bodies 102 are movably connected through the first wide section 1021 and/or the second wide section 1022 thereof.

One skilled in the art can also choose to open a window in the second wide section 1022 to form an outwardly extending anchor to further enhance the anchoring capability of the anchoring structure.

The embodiment of the invention also provides another anchoring structure.

Specifically, another anchoring structure includes a central member 103 and an elastic portion having an outer periphery, the elastic portion being configured by arranging a plurality of rod-shaped support bodies 102 branching off the central member 103 to one side thereof; the support bodies 102 have outermost sections remote from the central member 103, and at least one of the support bodies 102 has a smaller width adjacent to the outermost section than the outermost section.

The outermost section of the support body 102 is generally in contact with the inner wall of the implanted lumen and has a large width to provide better support. More clearly, the anchoring structure also has the property of being easily releasable and recyclable.

In one embodiment of the medical device, a plurality of support members 102 are separated from a central member 103 and extend around the central member with or without intersecting the central member to form a disk-shaped structure. Referring to the occluding device of fig. 3 and 4, which illustrate a disk-shaped configuration of the support body 102 that extends around after crossing, wherein the support body 102 has an outermost section 1022 distal to the central member 103, i.e., a second wide section 1022, the second wide section 1022 being larger than the wide section of the support body 102 at its proximal distal end, and the distal end of the support body 102 is curved to point toward the centerline of the anchoring structure. The two side curved sections of the second wide section 1022 of the support body 102 have smaller widths and therefore less stress, and the anchoring structure is more easily released or withdrawn from or into the catheter.

Referring to the occluding device of fig. 3 and 4, one skilled in the art may select a plurality of support bodies 102 that extend around the central member 103 without intersecting to form a disk-shaped structure. For example, the support body 102 is bent after being directly extended in the outer direction of the side from which the support body is formed after being emitted from the center member 103, and thus a disk-shaped structure similar to that of fig. 3 is formed.

In another embodiment of the medical device, the plurality of supporting bodies 102 are divided from the central member 103 and extend to the periphery to form a ring-shaped arrangement, and the elastic portion has a cone-like shape. Referring to fig. 5, there is shown a strainer comprising a central member 103 and an elastic portion filter 105 constituted by a plurality of support bodies 102 led out from one side of the central member 103, which has a shape like a cone. One support body 102 of the filter is bent to form an outermost section from the center piece 103, see section a of fig. 5 and fig. 6, the aforementioned outermost section of the support body 102 being section 1022, which has a greater width than the sections on both sides thereof.

Based on the foregoing description, in the preferred embodiment, the central member 103 is a tubular member, and the plurality of support members 102 are led out from the side wall of the nozzle at one end of the tubular member. For example, the support bodies 102 are spaced apart and extend from the annular end face of the nozzle.

In the preferred embodiment, the central member 103 and the support body 102 are a unitary structure, such as formed by cutting and shaping a metal tube. The elasticity of the support 102 can be obtained by heat-setting.

The present invention also provides intraluminal implantable medical devices containing the above optional anchoring structures.

Obviously, the medical device may further comprise a functional part connected to the other end of the tubular member. For example, the implantable medical device in the lumen is an occluder, and the functional part is an occlusion disk 201 for occluding the lumen in which the occluder is implanted. For another example, the medical device implantable in the lumen is a filter, and the functional portion is a filter for forming a function of filtering blood in the implanted lumen. An embodiment of a filter, see the filter body of fig. 5 and the anchoring structure of fig. 3, is provided, wherein the filter body and the anchoring structure are respectively led out from both ends of the tubular member to form the filter.

According to the embodiment of the invention, the medical instrument can be implanted in the lumen, so that the risk that the medical instrument migrates along the lumen or inclines to the lumen wall on one side can be effectively reduced.

While the invention has been described in detail and with reference to specific examples thereof, it will be apparent to one skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An implantable intraluminal medical device comprising a central member and an elastic member having an outer periphery, said elastic member being formed by arranging a plurality of rod-shaped support members branching from the central member to one side thereof; the plurality of supporting bodies are divided from the central piece, extend towards the center of the elastic part to form a cross arrangement, and extend towards the periphery to form a disc-shaped structure respectively, and the supporting bodies have larger width at the positions adjacent to the cross arrangement than at the positions of the cross arrangement.

2. The intraluminal implantable medical device of claim 1, wherein: the support body is located at one end of the central piece, the support body is a near end, the other end of the support body is a far end, and the support body has a larger width at the far end side close to the cross arrangement position than at the cross arrangement position.

3. The intraluminal implantable medical device of claim 1, wherein: the support body has a greater width on both sides thereof adjacent to the cross-aligned position than at the cross-aligned position.

4. The intraluminal implantable medical device of any one of claims 1-3, wherein: the width of the support body at the position close to the crossed arrangement position is 1.1-5 times of the width of the support body at the position of the crossed arrangement position.

5. The intraluminal implantable medical device of claim 1, wherein: the support body has a curved section in a cross-aligned position or in a disk-shaped configuration, which curved section has a smaller width than its adjacent straight section.

6. The intraluminal implantable medical device of claim 1, wherein: and the supporting bodies in the disc-shaped structure are not fixedly connected with each other.

7. The intraluminal implantable medical device of claim 6, wherein: and all adjacent support bodies in the disc-shaped structure are movably connected.

8. The intraluminal implantable medical device of claim 7, wherein: and all adjacent support bodies in the disc-shaped structure are movably connected through a rope, a net or an elastic connecting piece.

9. The intraluminal implantable medical device of claim 8, wherein: the support body is provided with a through hole at a wider section and is used for binding a thread rope or a net.

10. The intraluminal implantable medical device of claim 8, wherein: the wider sections of the adjacent supporting bodies in the disc-shaped structure are movably connected through the elastic connecting piece.

11. The intraluminal implantable medical device of claim 8, wherein: the disc-shaped structure is covered with a net or elastic membrane which is fixed circumferentially to the wider section of the support body.

12. The intraluminal implantable medical device of claim 1, wherein: the central piece is a tubular piece, and the plurality of supporting bodies are led out from the side wall of a nozzle at one end of the tubular piece.

13. The intraluminal implantable medical device of claim 12, wherein: the central piece and the supporting body are of an integral structure.

14. The intraluminal implantable medical device of claim 12 or 13, wherein: the tubular member further comprises a functional part, and the functional part is connected with the other end of the tubular member.

15. The intraluminal implantable medical device of claim 14, wherein: the medical device implantable in the lumen is an occluder, and the functional part is a occluding disc used for occluding the lumen in which the occluder is implanted.

16. The intraluminal implantable medical device of claim 15, wherein: the medical device which can be implanted in the tube cavity is a left auricle occluder.

17. The intraluminal implantable medical device of claim 14, wherein: the medical device implantable in the lumen is a filter, and the functional part is a filter body and is used for forming a filtering function in the implanted lumen.

18. An implantable intraluminal medical device comprising a central member and an elastic member having an outer periphery, said elastic member being formed by arranging a plurality of rod-shaped support members branching from the central member to one side thereof; the support bodies have outermost sections remote from the center piece, and the at least one support body has a smaller width at its location adjacent to the outermost sections than the outermost sections.

19. The intraluminal implantable medical device of claim 18, wherein: the plurality of supporting bodies extend to the periphery to be annularly arranged after being separated from the central piece, and the elastic part is similar to a cone shape.

20. The intraluminal implantable medical device of claim 18 or 19, wherein: the plurality of supporting bodies are separated from the central part and then respectively extend to the periphery to form a disc-shaped structure through crossing or not crossing.

21. The intraluminal implantable medical device of claim 18, wherein: one end of the support body, which is positioned at the central piece, is a proximal end of the support body, the other end of the support body is a distal end, and the support body has a smaller width at a position close to the outermost section on the distal end side of the support body than the outermost section.

22. The intraluminal implantable medical device of claim 18, wherein: the central piece is a tubular piece, and the plurality of supporting bodies are led out from the side wall of a nozzle at one end of the tubular piece.

23. The intraluminal implantable medical device of claim 22, wherein: the central piece and the supporting body are of an integral structure.

24. The intraluminal implantable medical device of claim 22 or 23, wherein: the tubular member further comprises a functional part, and the functional part is connected with the other end of the tubular member.

25. The intraluminal implantable medical device of claim 24, wherein: the medical device implantable in the lumen is an occluder, and the functional part is a occluding disc used for occluding the lumen in which the occluder is implanted.

26. The intraluminal implantable medical device of claim 25, wherein: the medical device which can be implanted in the tube cavity is a left auricle occluder.

27. The intraluminal implantable medical device of claim 24, wherein: the medical device implantable in the lumen is a filter, and the functional part is a filter body and is used for forming a filtering function in the implanted lumen.