Disclosure of Invention
The embodiment of the invention provides an anchoring device, which aims to solve the problem that the risk of interference of a heart valve prosthesis with a mitral valve is high in the prior art.
To achieve the above object, an embodiment of the present invention provides an anchoring device for fixing a prosthetic heart valve stent, comprising an anchoring ring and a plurality of connecting rods, wherein,
The anchoring ring is annular;
the plurality of connecting rods are uniformly distributed on the anchoring ring, one ends of the plurality of connecting rods are fixedly connected with the anchoring ring, the other ends of the plurality of connecting rods face to the same direction parallel to the central line of the anchoring ring and form an annular fixing part, and the connecting rods are used for fixing the artificial heart valve support.
As an alternative embodiment, the end of the connecting rod remote from the anchoring ring is provided with an inner hook, which is directed towards the inner side of the anchoring ring and is used for fixing a prosthetic heart valve stent.
As an optional implementation manner, a magnetic attraction block is arranged at one end, far away from the anchoring ring, of the connecting rod, the magnetic attraction block is arranged on the artificial heart valve support, and the connecting rod is connected with the artificial support through the magnetic attraction block.
As an alternative embodiment, the anchoring ring is wave-shaped, and one end of the connecting rod is connected with a trough of the wave-shape, which is close to the connecting rod.
As an alternative embodiment, the number of waveforms of the anchoring ring is identical to the number of connecting rods.
As an alternative embodiment, the material of the anchoring ring and the connecting rod is a nickel titanium alloy material.
One of the above technical solutions has the following advantages or beneficial effects:
In the embodiment of the invention, the artificial heart valve bracket is fixed at the corresponding position and connected with the anchoring device by the anchoring device which is pre-placed at a position far away from the mitral valve, so that the stability of the whole structure is enhanced, and the artificial heart valve bracket can be far away from the mitral valve, thereby reducing the risk of interference between the artificial heart valve bracket and the mitral valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic structural view of an anchoring device according to an embodiment of the present invention;
fig. 2 is a schematic plan-view exploded view of an anchoring device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a prosthetic heart valve stent according to an embodiment of the present invention;
FIG. 4 is a schematic delivery view of an anchoring device according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a release process of an anchoring device according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of a released position of an anchoring device according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of delivery of a prosthetic heart valve stent according to an embodiment of the present invention;
FIG. 8 is a schematic illustration of a release process of a prosthetic heart valve stent provided in an embodiment of the present invention;
FIG. 9 is a schematic illustration of a released position of a prosthetic heart valve stent according to an embodiment of the present invention;
fig. 10 is a schematic view of the attachment location of an anchoring device and a prosthetic heart valve stent provided by an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
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 where appropriate, such that embodiments of the application may be practiced otherwise than as specifically illustrated and described herein, and that the "first" and "second" distinguishing between objects generally being of the same type, and not necessarily limited to the number of objects, such as the first object may be one or more.
As shown in fig. 1, an embodiment of the present invention provides an anchoring device 10 for securing a prosthetic heart valve stent 20, comprising an anchoring ring 101 and a plurality of connecting rods 102, wherein,
The anchoring ring 101 is annular;
The plurality of connecting rods 102 are uniformly distributed on the anchoring ring 101, one ends of the plurality of connecting rods 102 are fixedly connected with the anchoring ring 101, the other ends of the plurality of connecting rods 102 face the same direction parallel to the central line of the anchoring ring 101 and form an annular fixing part, and the connecting rods 102 are used for fixing the artificial heart valve bracket 20.
In this embodiment, the anchoring device 10 is fixed at a position far away from the mitral valve, and then the artificial heart valve support 20 is connected and fixed with the anchoring device 10, so that the artificial heart valve support 20 can be far away from the mitral valve, and the risk of interference between the artificial heart valve support 20 and the mitral valve is reduced.
Wherein the anchoring ring 101 is fixed to the inner wall of the blood vessel after being delivered to the target site, and the prosthetic heart valve support 20 is connected to the annular fixing portion formed by the connecting rod 102 and fixed to the native valve annulus region after the prosthetic heart valve support 20 is delivered and released. The prosthetic heart valve holder 20 is thus far from the mitral valve, thereby reducing the risk of interference of the prosthetic heart valve holder 20 with the mitral valve, while the anchoring device 10 can increase the stability of the prosthetic heart valve holder 20 after installation, preventing the prosthetic heart valve holder 20 from falling off.
In addition, the prosthetic heart valve stent 20 is of a self-expanding or balloon-expanding design, and the prosthetic heart valve stent 20 provided in the embodiments of the present invention is of a self-expanding structure, as shown in fig. 2.
The connection between the anchoring device 10 and the prosthetic heart valve support 20 is completed, as shown in fig. 3, and the anchoring device 10 is connected and fixed to the prosthetic heart valve support 20 through a connecting rod 102.
As an alternative embodiment, the end of the connecting rod 102 remote from the anchoring ring 101 is provided with an inner hook, which is directed towards the inner side of the anchoring ring 101 and is intended for securing the prosthetic heart valve holder 20.
In the present embodiment, the connection and fixation of the connection rod 102 and the prosthetic heart valve stent 20 are achieved by the inner hook. The prosthetic heart valve support 20 is of a net structure, and the inner hook is matched with the net structure and can be connected and fixed with the inner hook after the prosthetic heart valve support 20 is released.
Wherein the inner hook is formed by a shaping heat treatment mode.
As an alternative embodiment, the end of the connecting rod 102 far away from the anchoring ring 101 is provided with a magnetic attraction block, and the artificial heart valve support 20 is provided with a magnetic attraction block, and the connecting rod 102 is connected with the artificial support through the magnetic attraction block.
In this embodiment, the anchoring device 10 is connected and fixed to the prosthetic heart valve holder 20 by a magnet. The magnetic block is a medical-grade magnetic component, and is correspondingly mounted on the surface of the artificial heart valve support 20, and is connected and fixed with the connecting rod 102 through magnetic force after the artificial heart valve support 20 is released.
Alternatively, the end of the connecting rod 102 remote from the anchoring ring 101 may be provided in the form of an annular bayonet and fixedly connected to the prosthetic heart valve holder 20.
As an alternative embodiment, the anchoring ring 101 is wave-shaped, and one end of the connecting rod 102 is connected to the wave trough of the wave-shape near the connecting rod 102.
In this embodiment, the anchoring device 10 needs to be compressed when the anchoring device 10 is delivered, and at this time, the anchoring ring 101 of the anchoring device 10 can be compressed conveniently by using a waveform, and the anchoring ring 101 can be fixed to the inner wall of the blood vessel more stably by using the waveform.
According to the prosthetic heart valve stent 20 with different sizes, the anchoring ring 101 is designed to be composed of 3-12 waveforms to meet the size requirement. The width and thickness of the anchor ring 101 are 0.3 to 3mm to increase the strength of the structure.
As an alternative embodiment, the number of waveforms of the anchoring ring 101 corresponds to the number of connecting rods 102.
In the present embodiment, the number of waveforms and the number of connecting rods 102 are set to be uniform, so that the anchoring device 10 is uniformly stressed, and the prosthetic heart valve stent 20 is more stably connected.
As an alternative embodiment, the material of the anchoring ring 101 and the connecting rod 102 is a nickel titanium alloy material.
In the present embodiment, the anchor ring 101 is made of a nitinol material, and can be expanded and stretched after compression and release of the anchor 10.
During use of the anchoring device 10, as shown in fig. 5, the anchoring device 10 is first delivered to the aortic location above the native valve. As further shown in fig. 6 and 7, the anchoring device 10 is released and the anchoring ring 101 abuts against and is fixed to the inner wall of the blood vessel. As shown in fig. 8, the prosthetic heart valve stent 20 was delivered to the position of the connecting rod 102 of the anchoring device 10, and as shown in fig. 9, the compressed prosthetic heart valve stent 20 was exposed, and no abnormality in the position was confirmed. Finally, the artificial heart valve bracket 20 is released, the artificial heart valve bracket 20 is fixedly connected with the anchoring device 10 and is fixedly abutted with the inner wall of the original annular region, and implantation of the artificial heart valve bracket 20 is completed. The prosthetic heart valve holder 20 can be positioned higher than the ventricular position by the anchoring device 10, thereby reducing the risk of interfering with the mitral valve while avoiding compression of the left bundle of his.
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.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.