CN211583279U

CN211583279U - Plugging device with better sealing effect

Info

Publication number: CN211583279U
Application number: CN201921569024.3U
Authority: CN
Inventors: 王梓曼
Original assignee: Zhuhai Yixin Medical Technology Co ltd
Current assignee: Zhuhai Radisson Medical Technology Co.,Ltd.
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-09-29
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses a plugging device with better sealing effect, which comprises a left disc and a right disc, wherein a waist part is arranged between the left disc and the right disc; the edge position of the left disc and/or the right disc is inclined towards the waist position to form a conical structure, and the edge position of the conical structure is a round blunt structure; through the conical structure of disk body for the occluder edge can closely laminate at heart tissue, thereby has fine sealed effect, and the design of cooperation round blunt shape makes the occluder edge can not form a sharp laminating to heart tissue when laminating heart tissue, and the heart is beating always, can avoid like this at the occluder edge and the long-time friction in-process of heart tissue, and the occluder edge cuts heart tissue.

Description

Plugging device with better sealing effect

Technical Field

The utility model relates to a medical instrument, in particular to a plugging device with better sealing effect.

Background

Common congenital heart diseases comprise structural heart diseases such as patent foramen ovale, atrial septal defect, unclosed arterial duct and ventricular septal defect, and the traditional treatment mode is surgical operation, which causes great trauma to patients. There are several corresponding types of heart septal defect occluders for treating corresponding congenital heart diseases, which are generally delivered to a specific location of a heart septal defect of a patient via a femoral vein or a femoral artery by a guide wire and a catheter.

The heart septal defect occluder that present clinical use, it is more common to have the occluder of left and right double-disk structure. The anatomical structures of the defect positions of different congenital heart diseases have different shapes and different thicknesses, and generally, the left disc and the right disc after the occluder is released cannot be well attached to the left side and the right side of the heart septal defect positions, so that the occlusion effect is poor, and even the risk of blood residual shunting exists. And when the occluder can not be well attached to the heart septal tissue, endothelial cells are difficult to adhere and cover on the occluder, so that the endothelialization process after the occluder is finally implanted is not ideal in both short term and long term.

Disclosure of Invention

In order to solve one of the technical problem that exists among the prior art at least, the utility model provides a seal better occluder of effect.

The utility model provides a technical scheme that its technical problem adopted is:

the occluder with a better sealing effect comprises a left disc and a right disc, wherein a waist part is arranged between the left disc and the right disc;

the edge position of the left disc and/or the right disc is inclined towards the waist position to form a conical structure, and the edge position of the conical structure is a round blunt structure.

According to some embodiments of the invention, the left disc, the right disc and the waist are of a mesh tubular structure woven from nitinol wires.

According to some embodiments of the invention, a central circular hole is provided in the center of the proximal end of the right disc, and a connecting structure is provided on the central circular hole for connecting with a conveying system.

According to some embodiments of the invention, the connecting structure comprises a circular truncated cone head steel sleeve and a circular truncated cone head connecting piece, wherein a circular truncated cone head is arranged on the circular truncated cone head connecting piece, and a concave groove is formed in the edge of the circular truncated cone head. According to some embodiments of the invention, the left disc and/or the right disc is covered with a flow-blocking membrane to enhance the occlusion effect.

According to some embodiments of the invention, the connecting structure comprises a truncated cone head steel sleeve and a truncated cone head connecting piece, wherein a truncated cone head is arranged on the truncated cone head connecting piece, and internal threads are arranged on the truncated cone head connecting piece.

According to some embodiments of the invention, the central circular aperture is formed by a loop of the coil.

According to some embodiments of the invention, the edge locations of the tapered structures are thicker than the middle locations.

According to some embodiments of the invention, the cross-sectional arc edge of the round and blunt structure is a minor arc.

According to some embodiments of the invention, the flow-blocking film is any one of a polyester film, a polytetrafluoroethylene film, a polyethylene film, or a composite film of a polyester film, a polytetrafluoroethylene film, a polyethylene film.

The utility model has the advantages that: through the conical structure of disk body for the occluder edge can closely laminate at heart tissue, thereby has fine sealed effect, and the design of cooperation round blunt shape makes the occluder edge can not form a sharp laminating to heart tissue when laminating heart tissue, and the heart is beating always, can avoid like this at the occluder edge and the long-time friction in-process of heart tissue, and the occluder edge cuts heart tissue.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present invention (embodiment 1);

FIG. 2 is a schematic view of the tubular structure of the grid of the present invention;

FIG. 3 is a schematic view of the tubular structure of the grid with a central circular hole of the present invention;

fig. 4 is an installation diagram of the connection structure in the present invention (embodiment 1);

FIG. 5 is a schematic view of the operation of the present invention (example 1);

FIG. 6 is a schematic structural view of another embodiment (embodiment 2) of the present invention;

fig. 7 is a schematic view showing the installation of a connection structure according to another embodiment (embodiment 2) of the present invention;

FIG. 8 is a schematic diagram of the operation of another embodiment (embodiment 2) of the present invention;

FIG. 9 is a schematic structural view of another embodiment (embodiment 3) of the present invention;

fig. 10 is a schematic diagram of the operation of another embodiment (embodiment 3) of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the invention can be practiced without these specific details, i.e., those skilled in the art can more effectively describe the nature of their work to others skilled in the art using the description and illustrations herein.

Referring to fig. 1, the occluder with better sealing effect comprises a left disc 100 and a right disc 200, wherein a waist part 300 is arranged between the left disc 100 and the right disc 200. The left disc 100 and the right disc 200 are generally flat disc bodies (the specific shapes of the disc bodies can be adjusted according to actual conditions), and the waist 300 connects the left disc 100 and the right disc 200 into an occluder with certain elasticity. When the plugging device is implanted, a sheath tube is firstly inserted into a diseased region, then the plugging device is connected with a conveying system of the plugging device, and the plugging device is pushed from the inside of the sheath tube to the diseased region through the conveying system to be plugged.

The edge position of the left disc 100 and/or the right disc 200 inclines towards the waist 300 to form a conical structure, and the conical structure is more tightly attached to the heart interval tissues, so that the plugging effect is effectively improved. The edge of the tapered structure is positioned as a rounded blunt structure 400. Since the larger the curvature radius of the arc, the more blunt the arc-shaped cross section, and the smaller the curvature radius of the opposite edge, and the sharper the arc-shaped cross section, the blunt rounded structure 400 is a circular arc with a smaller curvature radius, which is determined by the model and material of the occluder. The round blunt structure 400 can avoid the damage of the edge to the heart septal tissue such as cutting in the plugging and fitting process, and effectively protects the heart septal tissue.

Alternatively, the edge of the conical structure is thicker than the middle, so that the fitting degree of the occluder to the heart interval tissue can be further improved. The arc-shaped edge of the cross section of the round and blunt structure 400 is a minor arc, so that the effects of preventing abrasion and cutting injury to the heart septal tissue are better.

The flow blocking film 800 is any one of a polyester film, a polytetrafluoroethylene film, and a polyethylene film, or a composite film of a polyester film, a polytetrafluoroethylene film, and a polyethylene film.

Referring to fig. 2, the left disc 100, the right disc 200, and the waist 300 are mesh tubular structures 500 woven by ni-ti wires. The lattice tubular structure 500 has a lattice 510 distributed thereon. Specifically, the mesh tubular structure 500 with one end closed up can be pressed by a mold with a specific shape and then heat-treated to form, wherein the shape and size of the waist 300 can be customized according to the actual size of the heart septal defect.

Referring to fig. 3 and 4, a central circular hole 600 is formed in the center of the proximal end of the right disc 200, and a connecting structure 700 is disposed on the central circular hole 600 for connecting with a delivery system, so as to facilitate implantation of the occluding body.

Alternatively, the connection structure 700 is smoothly connected with the disc surface of the right disc 200.

Referring to fig. 3, the central circular hole 600 is formed by a loop of coil 610, so that the central circular hole 600 is located more firmly.

Referring to fig. 1 and 4, as an embodiment of the connection structure 700, referring to fig. 1 and 4, the connection structure 700 includes a circular truncated cone head steel sleeve 710 and a circular truncated cone head connector 720, that is, the circular truncated cone head steel sleeve 710 and the circular truncated cone head connector 720 are detachable structures, and specifically, the compression connection manner between the circular truncated cone head steel sleeve 710 and the circular truncated cone head connector 720 may be a threaded connection or a welding connection. The circular truncated cone head connecting piece 720 is provided with a circular truncated cone head 721, and the edge of the circular truncated cone head 721 is provided with a concave groove 722. The circular truncated cone head 721 mounted on the circular truncated cone head connector 720 protrudes outward relative to the block body, and the concave groove 722 facilitates clamping the connecting structure 700 with a clamping tool of a conveying system.

As another embodiment of the connection structure 700, referring to fig. 6 and 7, the connection structure 700 includes a circular truncated cone head steel sleeve 710 and a circular truncated cone head connector 720, a circular truncated cone head 721 is disposed on the circular truncated cone head connector 720, an internal thread 723 is disposed on the circular truncated cone head connector 720, and the internal thread 723 is convenient for being in threaded connection with a conveying system.

The left disc 100 and/or the right disc 200 are/is covered with a flow-resisting film 800 to form a secondary plugging effect, so that the plugging effect of the disc body can be enhanced.

Here, taking the patent foramen ovale occluder as an example, in embodiment 1, referring to fig. 1, the edge position of the left disc 100 in the occluder is inclined towards the waist 300 position to form a tapered structure, referring to fig. 4, the frustum head connector 720 is a steel column-shaped component, the frustum head connector 720 is inserted into the central circular hole 600 from the proximal end side of the right disc 200 of the occluder, and then a frustum head steel sleeve 710 with a through hole is inserted into the central circular hole 600 from the distal end side of the right disc 200 of the occluder, as shown in the arrow direction in fig. 4, the frustum head connector 720 and the frustum head steel sleeve 710 are connected in a compression manner, the compression connection manner can be a screw thread screwing connection or a welding connection, and a connection manner combining the screw thread screwing and welding, and the through hole of the frustum head steel sleeve 710 is matched with the outer diameter of the frustum. The right disc 200 having the coupling structure 700 can be manufactured.

The concave groove 722 of the forceps holder connecting structure 700 of the delivering forceps 30 can load the occluder into the delivering catheter 40 as shown in fig. 5, after the occluder reaches the heart septal defect position, the left disc 100 and the right disc 200 of the occluder 10 can be respectively released at two sides of the heart septal through the delivering catheter 40 and the delivering forceps 30, the waist 300 is positioned in the defect position, the disc surface of the right disc 200 is smoothly connected with the connecting structure 700, no bulge is arranged on the disc surface, and endothelial cells can easily adhere to and climb on the disc surface of the right disc 200; the left disc 100 can be tightly attached to the heart septal tissue to better play a role in blocking, and in addition, the edge of the left disc 100 can be prevented from damaging the heart septal tissue by the round blunt structure 400 in the attaching process, so that the heart septal tissue is effectively protected.

Here, also taking the patent foramen ovale occluder as an example, in embodiment 2, referring to fig. 6, the edge position of the right disc 200 is inclined towards the waist 300 position to form a conical structure, the edge position of the conical structure is a round blunt structure 400, the truncated cone head connector 720 is a bolt component, and the truncated cone head steel sleeve 710 and the truncated cone head connector 720 are connected through threads.

The connecting structure 25 of the right disc 200 is in threaded connection with the conveying steel cable 50, as shown in fig. 8, the occluder can be loaded into the conveying conduit 40, after the occluder reaches the heart septal defect position, the left disc 100 and the right disc 200 of the occluder can be respectively released at the two sides of the heart septal through the conveying conduit 40 and the conveying steel cable 50, the waist disc 23 is positioned in the defect position, the disc surface of the right disc 200 is smoothly connected with the connecting structure 25, no bulge is arranged on the disc surface, and endothelial cells can be easily adhered and cover the disc surface of the right disc 200; the left disc 100 can be attached to the heart septal tissue more closely to better play a role in plugging, in addition, the round blunt end 27 can avoid the edge of the left disc 100 from damaging the heart septal tissue in the attaching process, and the like, so that the heart septal tissue is effectively protected, the surface of the left disc 100 is completely coated with a layer of flow-resisting film 800, the flow-resisting film 800 forms a secondary plugging effect, and the plugging effect of the left disc 100 can be enhanced.

Also taking the patent foramen ovale occluder as an example, in example 3, referring to fig. 9, the edge positions of the left disc 100 and the right disc 200 of the occluder are inclined towards the waist 300 position to form a conical structure, and the edge position of the conical structure is a round blunt structure 400. The right disc 200 is internally covered with a flow-blocking film 800. The surface of the left disc 100 is completely covered with a layer of flow-resisting film 800, the right disc 200 extends outwards and axially faces the left disc 100, the edge of the right disc 200 is provided with a round blunt structure 400, and the right disc 200 is covered with a layer of flow-resisting film 800.

The right disc 200 of the occluder is made of a mesh tubular structure 500 woven by more than one nickel-titanium wire, the mesh tubular structure 500 comprises meshes 510, as shown in fig. 2, one end of the mesh tubular structure 500 is connected with the meshes 510 at the end part in series by one nickel-titanium wire to form a three-turn coil 610, and the mesh tubular structure 500 with one end closed can be obtained by tightening and closing the mesh tubular structure into a central circular hole 600, as shown in fig. 3. The mesh tubular structure 500 with one end closed up is pressed by a special shaped die and heat treated to shape, the shape and size of the waist 300 can be die-customized to the actual size of the heart septal defect, here exemplified by a patent foramen ovale occluder, to make a right disc 200, as shown in fig. 9.

The left disc 100 of the occluder is made of nickel titanium tubes with specific textures engraved by laser, the nickel titanium tubes with specific textures are pressed by a mold with a specific shape and are subjected to heat treatment forming, so that the left disc 100 is manufactured, as shown in fig. 9, the left disc 100 and the right disc 200 are fixedly connected by welding, riveting or the like, so that the occluder can be manufactured, and such methods are common processes and are not described again.

The connecting structure 700 of the right disc 200 is connected with the conveying steel cable 50, as shown in fig. 10, the occluder can be loaded into the conveying conduit 40, after the occluder reaches the heart septal defect position, the left disc 100 and the right disc 200 of the occluder can be respectively released at the two sides of the heart septal through the conveying conduit 40 and the conveying steel cable 50, the waist 300 is positioned in the defect position, the disc surface of the right disc 200 is smoothly connected with the connecting structure 700, no bulge is arranged on the disc surface, and endothelial cells can be easily adhered and cover the disc surface of the right disc 200; the left disc 100 can be tightly attached to the left side of the heart septal tissue to better play a role in plugging, in addition, the round blunt structure 400 can avoid the edge of the left disc 100 from damaging the heart septal tissue in the attaching process, and the like, so that the heart septal tissue is effectively protected, the surface of the left disc 100 is completely coated with a layer of flow-resisting film 800, the flow-resisting film 800 forms a secondary plugging effect, and the plugging effect of the left disc 100 can be enhanced; the right disc 200 can be attached to the right side of the heart septal tissue more closely to better play a role in plugging, in addition, the round blunt structure 400 can avoid the edge of the left disc 100 from damaging the heart septal tissue due to cutting and the like in the attaching process, the heart septal tissue is effectively protected, the right disc 200 is internally coated with a layer of flow-resistant film 800, the flow-resistant film 800 forms a secondary plugging effect, and the plugging effect of the right disc 200 can be enhanced.

According to the above principle, the present invention can also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention.

Claims

1. Better plugging device of closed effect, including left side dish (100), right side dish (200), left side dish (100) with be provided with waist (300), its characterized in that between right side dish (200):

the edge position of the left disc (100) and/or the right disc (200) is inclined towards the waist part (300) position to form a conical structure, and the edge position of the conical structure is a round blunt structure (400).

2. The better occlusion device of claim 1, wherein: the left disc (100), the right disc (200) and the waist part (300) are of a mesh tubular structure (500) formed by weaving nickel-titanium wires.

3. The better occlusion device of claim 1, wherein: the center of the near end of the right disc (200) is provided with a central round hole (600), and the central round hole (600) is provided with a connecting structure (700) for being connected with a conveying system.

4. A better occluding device according to claim 3 wherein: the connecting structure (700) comprises a circular truncated cone head steel sleeve (710) and a circular truncated cone head connecting piece (720), a circular truncated cone head (721) is arranged on the circular truncated cone head connecting piece (720), and a concave groove (722) is formed in the edge of the circular truncated cone head (721).

5. The better occlusion device of claim 1, wherein: the left disc (100) and/or the right disc (200) is/are covered with a flow-blocking film (800).

6. A better occluding device according to claim 3 wherein: the connecting structure (700) comprises a circular truncated cone head steel sleeve (710) and a circular truncated cone head connecting piece (720), a circular truncated cone head (721) is arranged on the circular truncated cone head connecting piece (720), and an inner screw thread (723) is arranged on the circular truncated cone head connecting piece (720).

7. A better occluding device according to claim 3 wherein: the central circular hole (600) is formed by closing up a circle of coils (610).

8. The better occlusion device of claim 1, wherein: the edge positions of the conical structure are thicker than the middle positions.

9. The better occlusion device of claim 1, wherein: the arc-shaped edge of the cross section of the round and blunt structure (400) is a minor arc.

10. The better occlusion device of claim 5, wherein: the flow-resistant film (800) is any one of a polyester film, a polytetrafluoroethylene film and a polyethylene film, or a composite film of the polyester film, the polytetrafluoroethylene film and the polyethylene film.