CN113440322B

CN113440322B - Connector and process for assembling cardiovascular implant and delivery device

Info

Publication number: CN113440322B
Application number: CN202110910160.XA
Authority: CN
Inventors: 阮成民; 沈斌; 梁玉麟; 马为; 李运高; 邓嘉铭; 郭俊乐
Original assignee: Guangdong Pulse Medical Technology Co ltd
Current assignee: Guangdong Pulse Medical Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2024-01-12
Anticipated expiration: 2041-08-09
Also published as: CN113440322A

Abstract

The application relates to the technical field of cardiovascular implant implantation, in particular to a connecting piece and an assembling process of a cardiovascular implant and conveying equipment, wherein the connecting piece is used for connecting the cardiovascular implant and the conveying equipment and comprises a main body, the main body is provided with a connecting hole and a threaded hole, the connecting hole is used for inserting a mounting part of the cardiovascular implant, and the threaded hole is used for being in threaded connection with the conveying equipment. When the connecting piece is used for connecting cardiovascular implants and conveying equipment, the connecting end or the closing-in structure is reduced, the risk of generating micro thrombus can be effectively reduced, meanwhile, each part of the implants is uniformly stressed, the structure is simple, welding spots are reduced, in addition, the content and the surface area of foreign matters are reduced, and the risk of corrosion is further reduced.

Description

Connector and process for assembling cardiovascular implant and delivery device

Technical Field

The application relates to the technical field of cardiovascular implant implantation, in particular to a connecting piece and an assembling process of a cardiovascular implant and conveying equipment.

Background

Currently, as shown in fig. 1, a common cardiovascular implant on the market is formed by cutting a metal tube with laser and then performing heat treatment, or by weaving a metal wire and then performing heat treatment as shown in fig. 2 to 4. While many cardiovascular implants are screwed to the delivery device, a threaded structure 1 'is usually required to be additionally connected to the connection end 21' of the tubular cardiovascular implant, and the threaded structure 1 'is required to be mounted to the connection end 21' of the silk-knitted cardiovascular implant, and the braided silk is required to be closed and closed into a closed loop structure, so that the tubular structure is mainly plugged with the braided silk and then welded.

The above structure has the following problems:

(1) The tubular cardiovascular implant 2 'and the silk-knitted cardiovascular implant 3' inevitably increase the height of the raised portions and thus increase the risk of micro-thrombosis due to the need to attach threaded structures 1 'at the connection ends 21'.

(2) The fact that the braided wires of the wire braided cardiovascular implant 3' penetrate into the tubular structure completely causes local staggered stacking of the braided wires, so that the stress on each part of the implant is uneven, the implant is easy to deviate and twist when the sheath is taken in and released from the operation, normal release and recovery are affected, and even the life of a patient is endangered.

(3) Whether the tubular cardiovascular implant 2 'or the silk-knitted cardiovascular implant 3' is provided with a structure which is additionally and independently provided with threads, especially the silk-knitted cardiovascular implant 3 'is also provided with a welding closing structure 31', so that the welding spots are more, the falling risk is increased, in addition, the foreign matter content in the body and the whole surface area are increased, and the corrosion risk is further increased.

Disclosure of Invention

The invention aims to provide a connecting piece and an assembly process of a cardiovascular implant and a conveying device, which solve the technical problem that a safe and reliable connecting structure for connecting the cardiovascular implant and the conveying device is lacking in the prior art to a certain extent.

The application provides a connecting piece for connect cardiovascular implant and conveying equipment, the connecting piece includes the main part, the main part is formed with connecting hole and screw hole, the connecting hole is used for inserting the installation department of establishing cardiovascular implant, the screw hole is used for with conveying equipment threaded connection.

In the above technical solution, further, the main body has one of a cylindrical structure, an inverted frustum structure, a partial sphere structure, or a square structure.

In any of the above technical solutions, further, when the main body has one of a cylindrical structure, a partial spherical structure, or a square structure, the connection hole penetrates through the top and bottom of the main body;

when the main body has an inverted frustum structure, the connecting holes penetrate through the top and adjacent side wall portions of the main body.

In any of the above embodiments, further, the threaded hole is located at a center of the main body.

In any of the above technical solutions, further, the number of the connection holes is plural, and the plural connection holes together with the threaded holes are arranged in a square array with the threaded holes as a center.

In any of the above technical solutions, further, the number of the connection holes is plural, and the plural connection holes are arranged in an annular array with the threaded hole as a center.

In any of the above embodiments, further, the number of array loops formed is one; or alternatively

The number of the formed array rings is a plurality, and the connecting holes in any two adjacent array rings are staggered.

In any of the above technical solutions, further, the number of the connection holes is plural, and at least two of the connection holes are used as a group, and the plural groups of connection holes are arranged in a ring array with the threaded holes as the center.

In any of the above technical solutions, further, the number of the connection holes is plural, and at least two of the connection holes and a single of the connection holes are arranged in a single ring array with the threaded hole as a center.

The application also provides an assembly process of the cardiovascular implant and the conveying equipment, and the connecting piece according to any one of the technical schemes is utilized, so that the cardiovascular implant and the conveying equipment have all the beneficial technical effects of the connecting piece, and the description is omitted.

In the above technical solution, further, the assembly process of the vascular implant and the delivery device comprises the following steps:

when the cardiovascular implant is a tubular cardiovascular implant, one end of the tubular cardiovascular implant is cut into a plurality of mounting feet, and then each of the mounting feet is inserted into a corresponding connection hole of the connecting piece and connected, and then the conveying device is in threaded connection with the threaded hole for the cardiovascular implant.

When the cardiovascular implant is a silk-woven cardiovascular implant, each silk at the opening of the woven mesh is inserted into a corresponding connecting hole of the connecting piece and connected, and then the conveying equipment is in threaded connection with the threaded hole for the cardiovascular implant.

Compared with the prior art, the beneficial effects of this application are:

first, when utilizing this connecting piece to connect tubular cardiovascular implant and conveying equipment, obviously got rid of the link of tubular cardiovascular implant among the prior art, directly made the structure of mounting foot with tubular product, directly inserted in the connecting hole of this connecting piece, obviously reduced the protrusion height of junction position to effectively reduce the risk of producing miniature thrombus.

The wires at the openings of the second and the net are respectively inserted into the connecting holes in a one-to-one correspondence manner, so that stacking and interlacing are avoided, each part of the implant is uniformly stressed, and further, the phenomena of deflection, interlacing and torsion are avoided when the cardiovascular implant is taken into the sheath and released from the sheath in the operation, thereby being safe and reliable, and ensuring that the cardiovascular implant can be smoothly released or recovered.

In addition, the closing-in structure in the prior art is also removed, so that the structure is simpler than that of similar cardiovascular implants in the market, welding spots are reduced, the falling risk is reduced, in addition, the foreign matter content and the surface area are reduced, and the corrosion risk is further reduced.

The assembly process of cardiovascular implant and conveying equipment that this application provided utilizes foretell connecting piece to link together vascular implant and conveying equipment, has reduced link or binding off structure, can effectively reduce the risk that produces miniature thrombus, makes each part of implant receive stress evenly simultaneously, simple structure moreover reduces the solder joint, in addition, has still reduced foreign matter content and surface area, and then has reduced the risk of corruption.

Drawings

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

FIG. 1 is a schematic diagram of an assembled structure of a prior art tubular cardiovascular implant and threaded structure;

FIG. 2 is a schematic diagram of an assembled structure of a prior art silk braid-type cardiovascular implant and threaded structure;

FIG. 3 is a schematic view of yet another assembled structure of a prior art silk-knitted cardiovascular implant and threaded structure;

FIG. 4 is a schematic view of a prior art crimping structure of a silk braid-based cardiovascular implant;

fig. 5 is a schematic structural diagram of a connector according to a first embodiment of the present disclosure;

FIG. 6 is a schematic view of an assembly structure of a connecting member and a tubular cardiovascular implant according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of an assembly structure of a connector and a silk braid-type cardiovascular implant according to an embodiment of the present application;

FIG. 8 is a schematic view of a connector and silk braid cardiovascular implant assembly according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of a connector assembled with a silk braid-type cardiovascular implant according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a connector according to a second embodiment of the present disclosure;

fig. 11 is a schematic structural view of a connector according to a third embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a connector according to a fourth embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of a connector according to a fifth embodiment of the present application;

fig. 14 is a schematic structural diagram of a connector according to a sixth embodiment of the present application;

fig. 15 is a schematic structural diagram of a connector according to a seventh embodiment of the present application;

fig. 16 is a schematic structural diagram of a connector according to an eighth embodiment of the present application.

Reference numerals:

1' -threaded structure, 2' -tubular cardiovascular implant, 21' -connecting end, 3' -silk woven cardiovascular implant, 31' -crimping structure;

1-connecting piece, 11-main body, 111-connecting hole, 112-threaded hole, 2-tubular cardiovascular implant, 3-silk woven cardiovascular implant.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.

The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.

All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The assembly process of the connector 1 and the cardiovascular implant and delivery device according to some embodiments of the present application is described below with reference to fig. 5 to 15.

Example 1

Referring to fig. 5, an embodiment of the present application provides a connector 1 for connecting a cardiovascular implant to a delivery device. The connector 1 comprises a main body 11, the main body 11 is formed with a connection hole 111 and a threaded hole 112, the connection hole 111 is used for inserting a mounting part of a cardiovascular implant, and the threaded hole 112 is used for being in threaded connection with a delivery device.

As shown in fig. 6, when the present connector 1 is used to connect the cardiovascular implant 2 of tubular material and the delivery device, one end of the tubular material is cut into a plurality of mounting pins (i.e., a short column structure, of course, not only limited thereto, but also set according to actual needs) by using laser, and then each mounting pin is uniformly inserted into a corresponding connection hole 111 of the connector 1, and then is connected with the present connector 1 by injection welding, and then is connected with the delivery device by using a threaded hole 112.

Therefore, the connecting end of the cardiovascular implant 2 of the tubular product type in the prior art is obviously removed, the tubular product is directly manufactured into a structure of the mounting foot, and the tubular product is directly inserted into the connecting hole 111 of the connecting piece 1, so that the protruding height of the connecting part is obviously reduced, and the risk of generating micro thrombus is effectively reduced.

As shown in fig. 7 to 9, when the silk-knitted cardiovascular implant 3 and the delivery device are connected by the present connector 1, the silk at the openings of the knitted mesh can be uniformly inserted into the corresponding connection holes 111 of the present connector 1, and then fixed by various fixing means such as gluing.

Therefore, the wires at the openings of the mesh are inserted into the connecting holes 111 in a one-to-one correspondence manner, so that stacking and interlacing are avoided, each part of the implant is uniformly stressed, and the phenomena of deflection, interlacing and torsion during the process of taking in and releasing the cardiovascular implant from the sheath are avoided, thereby being safe and reliable, and ensuring that the cardiovascular implant can be smoothly released or recovered.

Moreover, note that, because the prior art is limited by the necking structure, the wire-woven cardiovascular implant is easy to suffer from uneven stress, wrong unfolding posture and the like, and can only be manufactured by adopting a tube, but the adaptability of the tube-woven cardiovascular implant is poorer than that of the wire-woven cardiovascular implant (namely, the tube-woven cardiovascular implant is not suitable for complex and changeable cardiovascular tissue structures), and the tube-woven cardiovascular implant is harder, so that the damage to tissues such as the cardiovascular tissue is easy to occur, and the wire-woven cardiovascular implant is not as soft as the wire-woven cardiovascular implant, so that the necking problem of the wire-woven cardiovascular implant is solved, and therefore, the tube-woven cardiovascular implant is not required to be manufactured any more, and the adaptability, the safety and the reliability of the cardiovascular implant are improved, as shown in fig. 1 and 9, and the tube in fig. 1 is replaced by the tube as the cardiovascular implant shown in fig. 9, the adaptability is better, and the risk of damaging the cardiovascular tissue is less, and the wire-woven cardiovascular implant 3 is safer and more reliable (the two ends of the wire-woven cardiovascular implant 3 shown in fig. 9 can be connected with the connecting piece 1 at the center of the connecting piece 1).

In this embodiment, preferably, as shown in fig. 5, the main body 11 has a cylindrical structure, which is simple in structure, convenient to process, and low in production cost, and when the mounting feet of the tubular cardiovascular implant 2 are welded with the mounting feet, the requirement on the clamp is reduced, and meanwhile, the difficulty of clamping is reduced, so that the connecting piece 1 with the structure is selected to be used in a more economical scheme.

In this embodiment, preferably, as shown in fig. 5, a threaded hole 112 is located in the center of the body 11 to facilitate delivery of the cardiovascular implant into place by the delivery device, avoiding misalignment.

In this embodiment, preferably, as shown in fig. 5, the number of the connecting holes 111 is multiple, and the plurality of connecting holes 111 are arranged in a single-row annular array with the threaded holes 112 as the center, so that each part of the silk-knitted cardiovascular implant 3 is more uniformly stressed, the problems of deviation and torsion of the cardiovascular implant during sheath retraction and release from the sheath during operation are avoided, normal release and recovery are realized, and the life safety of a patient is ensured.

Note that, in order to apply the closing-up of the knitting structure of the different knitting processes and the closing-up of the structure of the different pipes, the structures of the following embodiment two to embodiment five may also be adopted.

Example two

The connector 1 in this embodiment is an improvement on the basis of the first embodiment, and the technical content disclosed in the first embodiment is not repeated, and the disclosure of the first embodiment also belongs to the disclosure of this embodiment.

Specifically, as shown in fig. 10, the different structures disclosed in the second embodiment and the first embodiment are as follows:

the number of the connecting holes 111 is plural, and the plural connecting holes 111 together with the screw holes 112 are arranged in a square array with the screw holes 112 as the center. Here, for example, the number of the connection holes 111 is eight, the screw holes 112 are one and are located at the center, and nine holes added together by the connection holes 111 and the screw holes 112 are arranged in a square array.

Example III

Specifically, as shown in fig. 11, the different structures disclosed in the third embodiment and the first embodiment are as follows:

the number of the connecting holes 111 is a plurality, and the plurality of connecting holes 111 are distributed in an annular array with the threaded holes 112 as the center;

the number of the formed array rings is a plurality (namely, a plurality of annular structures with the threaded holes 112 as the center and unequal radiuses, and any annular structure is formed by surrounding a plurality of connecting holes 111 at intervals in sequence), and the connecting holes 111 in any two adjacent array rings are staggered. Here, for example, the threaded hole 112 is one and is located at the center, the number of the connection holes 111 is eight, and the eight connection holes 111 form an inner ring array ring and an outer ring array ring, wherein the inner ring array ring includes four connection holes 111 with equal radius, the outer ring array ring also includes four connection holes 111 with equal radius, and the radius of the inner ring array ring is smaller than the radius of the outer ring array ring, and the four connection holes 111 in the inner ring array ring are staggered with the four connection holes 111 in the outer ring array ring.

Example IV

Specifically, as shown in fig. 12, the different structures disclosed in the fourth embodiment and the first embodiment are as follows:

the number of the connecting holes 111 is plural, and at least two connecting holes 111 are taken as a group, and a plurality of groups of connecting holes 111 are distributed in an annular array with the threaded holes 112 as the center. Here, for example, the screw holes 112 are one and are located at the center, the number of the connection holes 111 is eight, and two connection holes 111 adjacent at a short distance are taken as one group, four groups of connection holes 111 are shared, and the four groups of connection holes 111 are arranged in an annular array with the screw holes 112 as the center.

Example five

Specifically, as shown in fig. 13, the different structures disclosed in the fourth embodiment and the first embodiment are as follows:

the number of the connecting holes 111 is plural, and at least two connecting holes 111 and a single connecting hole 111 are arranged in a circular array with the threaded hole 112 as the center. Here, for example, the threaded hole 112 is one and is located at the center, the number of the connecting holes 111 is eight, and three connecting holes 111 adjacent at a short distance are taken as one group, and there are two groups, for convenience of distinction, two groups of connecting holes 111 are named as a first three-hole group and a second three-hole group, and the other two individual connecting holes 111 are named as a first single-hole group and a second single-hole group, specifically, the first three-hole group, the first single-hole group, the second three-hole group and the second single-hole group are arranged at intervals with the threaded hole 112 as the center, that is, the three-hole group and the one-hole group are arranged in a single ring with the threaded hole 112 as the center, wherein the single ring means only one array ring along the radial direction.

Example six

Specifically, as shown in fig. 14, the different structures disclosed in the sixth embodiment and the first embodiment are as follows:

the main body 11 has an inverted frustum structure, and the connection hole 111 penetrates the top and adjacent sidewall portions of the main body 11.

The surface of this structure is smoother, can reduce the friction with heart tissue, and then reduce the influence to the tissue, promotes security and reliability, and the cost is higher than cylinder structure and square structure.

Example seven

Specifically, as shown in fig. 15, a different structure of the seventh embodiment from that disclosed in the first embodiment is as follows:

the body 11 has a partial sphere structure.

The surface of the structure is smoother, friction with heart tissues can be reduced, influence on the tissues is reduced, and the cost is higher than that of a cylindrical structure and a square structure.

Example eight

Specifically, as shown in fig. 16, the different structures disclosed in the eighth embodiment and the first embodiment are as follows:

the main body 11 has a square structure.

The structure is simple, the processing is convenient, the production cost is reduced, and when the mounting feet of the tubular cardiovascular implant 2 are welded with the mounting feet, the requirement on the clamp is reduced, and meanwhile, the clamping difficulty is reduced.

Example nine

The embodiments of the present application further provide an assembly process of a cardiovascular implant and a delivery device, where the vascular implant and the delivery device are connected together by using the connector 1 according to any of the embodiments, so that the connector 1 has all the beneficial technical effects and will not be described herein.

The assembly process of the vascular implant and the delivery device comprises the following steps:

when the cardiovascular implant is the tube-type cardiovascular implant 2, one end of the tube-type cardiovascular implant 2 is cut into a plurality of mounting feet, and then each mounting foot is inserted into a corresponding connection hole 111 of the connection member 1 and connected, and then the delivery device is screw-connected with the screw hole 112 for the cardiovascular implant;

when the cardiovascular implant is a silk-woven cardiovascular implant 3, the individual filaments at the openings of the woven mesh are inserted into the corresponding connecting holes 111 of the connecting piece 1 and connected, and then the delivery device is screwed with the threaded holes 112 for the cardiovascular implant.

The application provides an assembly process of cardiovascular implant and conveying equipment, is in the same place vascular implant and conveying equipment link together with foretell connecting piece 1, has reduced link or binding off structure, can effectively reduce the risk that produces miniature thrombus, makes each part of implant receive stress evenly simultaneously, simple structure moreover, reduces the solder joint, in addition, has still reduced foreign matter content and surface area, and then has reduced the risk of corruption.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connecting piece for connecting a cardiovascular implant and a delivery device, characterized in that the connecting piece comprises a main body, wherein the main body is provided with a connecting hole and a threaded hole, the connecting hole is used for inserting a mounting part of the cardiovascular implant, the number of the mounting part and the connecting hole is multiple, any connecting hole is correspondingly inserted with one mounting part, and the threaded hole is used for being in threaded connection with the delivery device;

the installation part of the cardiovascular implant is the installation foot of a tubular cardiovascular implant or the silk of a silk woven cardiovascular implant;

the threaded hole is positioned in the center of the main body; the connecting holes are distributed in a square array by taking the threaded holes as the center;

or, the plurality of connecting holes are distributed in an annular array with the threaded holes as the center; the number of the formed array rings is multiple, and the connecting holes in any two adjacent array rings are staggered;

or at least two connecting holes are used as a group, and a plurality of groups of connecting holes are distributed in an annular array by taking the threaded holes as the center;

or at least two connecting holes and a single connecting hole are arranged in a single ring by taking the threaded hole as the center.

2. The connector of claim 1, wherein the body has one of a cylindrical structure, an inverted frustum structure, a partial sphere structure, or a square structure.

3. The connector of claim 2, wherein when the body has one of a cylindrical structure, a partial spherical structure or a square structure,

the connecting holes penetrate through the top and the bottom of the main body;

4. A process for assembling a cardiovascular implant and a delivery device, characterized in that the vascular implant and the delivery device are connected together by means of a connector according to any one of claims 1 to 3, the process comprising the steps of:

when the cardiovascular implant is a tubular cardiovascular implant, one end of the tubular cardiovascular implant is cut into a plurality of mounting feet, then each mounting foot is inserted into a corresponding connecting hole of the connecting piece and connected, and then the conveying equipment is in threaded connection with a threaded hole of the cardiovascular implant;

when the cardiovascular implant is a silk-woven cardiovascular implant, each silk at the opening of the woven mesh is inserted into a corresponding connecting hole of the connecting piece and connected, and then the conveying equipment is in threaded connection with the threaded hole of the cardiovascular implant.