CN210541935U

CN210541935U - Support for intervening valve in valve

Info

Publication number: CN210541935U
Application number: CN201920458946.0U
Authority: CN
Inventors: 金磊; 范志豪; 慕宏
Original assignee: Beijing Bairen Medical Technology Co ltd
Current assignee: Beijing Bairen Medical Technology Co ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2020-05-19
Anticipated expiration: 2029-04-08

Abstract

The utility model relates to a support for interveneeing lamella in lamella, the support is the metal mesh pipe, has four lines circumference branch that is equipped with horizontal extension and locates multiseriate axial branch between the circumference branch, the crisscross setting of axial branch of each line, axial branch and the horizontal branch who meets rather than are connected and are formed staggered honeycomb shape net, and the honeycomb shape net of inflow end is the same basically with the honeycomb shape net area of middle line, and the honeycomb shape net of outflow end is slightly bigger than other two lines honeycomb shape net area. The utility model provides a pair of a support for interveneeing lamella in lamella, in considering to intervene lamella in the lamella will be through interveneeing to implanting the surgical lamella that has been ruined earlier or intervene the lamella, its and the specificity of destroying the laminating of power valve, carry out subversive improvement to current intervention lamella support, all adopt the structure of approximate honeycombed form with all grids of support, when the support of this kind of structure can realize certain rigidity, synchronous expansion is fast, the adhesion is good, obtain better result of use.

Description

Support for intervening valve in valve

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to be used for interveneeing valve in the valve or intervene the support of pulmonary valve and the connection structure of valve leaf and use this connection structure intervene valve in the valve and intervene the pulmonary valve.

Background

With the ever-increasing economic level of China and the increasing year-by-year replacement of biovalve for patients with senile valvular disease, the application proportion of biovalve is continuously closing to the developed countries. The 2017 guidelines issued by AHC/ACC to reduce the age of a patient surgically implanted with a biological valve to 50 years, and recommend the use of a biological valve for patients of any age for whom anticoagulation is contraindicated, for whom anticoagulation is inappropriate or for whom anticoagulation is undesirable. In addition, the application of the domestic transcatheter interventional bioprosthetic valve is increasing year by year in recent years. In view of the uncertainty of durability of various artificial biological valves, the inevitable part of patients after operation has the biological valve damaged or calcified, which leads to failure. For this reason, an interventional valve-in-valve would provide re-interventional treatment for such patients.

Interventional bioprosthetic heart valves are placed into previously implanted and interventional bioprosthetic valves that have failed through femoral artery or transthoracic minimally invasive interventional procedures to replace the original valve function and have been successfully applied clinically. With the ever increasing number of cases in such clinical applications, perivalvular leakage between the re-introduced biological valve and the original incompetent valve was found to be one of the common complications. In this regard, it is hoped that the implant is specially used for implanting the intervention artificial biological valve and then intervenes the valve in the valve after the intervention artificial biological valve loses work. The utility model aims at providing a support that is arranged in developing intervention lamella.

Disclosure of Invention

In view of this, the present invention provides a stent for an interventional valve, which has three rows or four rows of honeycombed meshes and can be opened quickly and synchronously.

In order to solve the above technical problem, the utility model discloses a first technical scheme who takes is: a stent for an interventional valve in a valve, which is a metal mesh tube, the bracket is provided with four rows of circumference supporting rods which extend transversely and a plurality of rows of axial supporting rods which are arranged among the circumference supporting rods, the axial supporting rods of each row are arranged in a staggered way, wherein the first and second rows of circumferential struts on the lower side define the inflow end of the stent, the third and fourth rows of circumferential struts define the outflow end of the stent, each row of circumferential struts is formed by connecting a plurality of groups of angled struts, each group of the supporting rods is in a deformable V shape, the deformation angle is between 0 and 90 degrees, the axial struts and the transverse struts connected with the axial struts are connected to form honeycomb-shaped grids which are arranged in a staggered mode, the area of the honeycomb-shaped grids at the inflow end is basically the same as that of the honeycomb-shaped grids in the middle row, and the area of the honeycomb-shaped grids at the outflow end is slightly larger than that of the honeycomb-shaped grids in the other two rows.

Furthermore, the area of the honeycombed grid at the outflow end is 10 to 20 percent larger than that of the honeycombed grid of the other two rows.

Further, the honeycomb grid area at the inflow end and the honeycomb grid area in the middle row do not differ by more than 10%.

Further, the height of the support is 13-25mm, the inner diameter of the support is 18-30mm, and the wall thickness of the support is 0.35-0.65 mm.

Further, the axial struts of the inflow end and the honeycomb-shaped grid in the middle row are similar in size, and the axial struts of the outflow end and the honeycomb-shaped grid are slightly larger than the axial struts of the honeycomb-shaped grids in the other two rows.

The utility model discloses the second technical scheme who takes is: a support for intervening valve in valve is a metal mesh tube, and is provided with five rows of transversely extending circumferential struts and a plurality of rows of axial struts arranged among the circumferential struts, wherein the axial struts of each row are arranged in a staggered mode, the circumferential struts of the first row and the second row on the lower side limit the inflow end of the support, the circumferential struts of the fourth row and the fifth row limit the outflow end of the support, each row of circumferential struts is formed by connecting a plurality of groups of struts with angles, each group of struts is in a deformable V shape, the deformation angle is between 0 and 90 degrees, the axial struts are connected with transverse struts connected with the axial struts to form honeycomb meshes which are arranged in a staggered mode, the area of the honeycomb meshes of the inflow end is basically the same as that of the honeycomb meshes of the middle row, and the area of the honeycomb meshes of the outflow end is slightly larger than that of the honeycomb meshes of the other three rows.

Further, the area of the honeycomb-shaped grid at the outflow end is 10% -20% larger than that of other three rows of honeycomb-shaped grids.

Further, the axial struts of the inflow end and the middle row of honeycomb grids are the same in size, and the axial struts of the outflow end and the honeycomb grids are slightly larger than the axial struts of the other three rows of honeycomb grids.

The utility model discloses the beneficial effect that can reach is: 1. the interventional valve middle valve has better characteristics of rapid, uniform and consistent expansion, and is easy to accurately anchor in the previous lost-motion biological valve; 2. the symmetry of the structure endows the intervention valve with better adhesiveness than the intervention of the intervention aortic valve in the dysfunctional biological valve, and realizes the close contact with the original dysfunctional valve so as to avoid paravalvular leakage; 3. this structural design is that the connection between the valve leaf with make valve leaf fixed on the support more reasonable, more firm, realize the same durability with the biological valve of this enterprise's surgery.

Drawings

Fig. 1 is a schematic structural diagram of an interventional valve stent of the prior art.

Fig. 2 is a schematic structural diagram of a stent for an interventional valve according to an embodiment of the present invention.

Fig. 3 is a deployed plan view of a stent for accessing a valve in a valve according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments is provided as illustrative examples, and it is to be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Interventional valve-in-valves are commonly used in previously surgically implanted or interventional dysfunctional bioprosthetic heart valves (including four-valve-site implanted or interventional bioprosthetic valves) to effect re-interventional treatment of the heart valve. The stent structure of a valve in a prior art interventional valve is shown in fig. 1.

Referring to fig. 2 and 3, a stent 1 for an interventional valve is a metal mesh tube, the stent 1 has four rows of

circumferential struts

2, 3, 4, 5 extending transversely, a plurality of

axial struts

6, 7, 8 are arranged between each row of circumferential struts, the axial struts of each row are arranged alternately, wherein the

circumferential struts

2, 3 of the first and second rows on the lower side define an inflow end 9 of the stent, the

circumferential struts

4, 5 of the third and fourth rows define an outflow end 10 of the stent, each row of circumferential struts is formed by connecting a plurality of groups of angled struts EE, each group of struts EE is in a deformable V shape, the deformation angle is between 0 and 90 degrees, the axial struts are connected with the transverse struts connected with the axial struts to form a staggered approximately honeycomb-shaped grid, the honeycomb-shaped grid 11 of the inflow end has the same area as or slightly different area from the honeycomb-shaped grid 12 of the middle row, the area difference is not more than 10%, and the honeycomb grid 13 at the outflow end is slightly larger than the area of the other two rows of honeycomb grids, generally about 10% -20%. Typically, different honeycomb grid areas are achieved by the different heights of the axial struts.

In some cases, where a better valve in the valve is desired, the stent may be augmented with a row of honeycomb-shaped meshes. Generally, the height of the stent is 13-25mm, the inner diameter of the stent is 18-30mm, and the wall thickness of the stent is 0.35mm-0.65 mm.

Other structures of the valve in the interventional valve in this embodiment, such as the structure of the connecting post connected to the valve leaflet, can be the same or similar structures as those of the prior art.

Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A stent for intervening valve in valve is a metal mesh tube, and the stent is provided with four rows of transversely extending circumferential struts and a plurality of rows of axial struts arranged among the circumferential struts, the axial struts of each row are arranged in a staggered way, wherein the first and second rows of circumferential struts on the lower side define the inflow end of the stent, the third and fourth rows of circumferential struts define the outflow end of the stent, each row of circumferential struts is formed by connecting a plurality of groups of angled struts, each group of the supporting rods is in a deformable V shape, the deformation angle is between 0 and 90 degrees, the axial strut and the transverse strut connected with the axial strut are connected to form honeycomb grids which are arranged in a staggered mode, the area of the honeycomb grids at the inflow end is basically the same as that of the honeycomb grids in the middle row, and the area of the honeycomb grids at the outflow end is slightly larger than that of the honeycomb grids in the other two rows.

2. The stent for an interventional valve-in-valve of claim 1, wherein the honeycomb cells of the outflow end are 10% -20% larger in area than the other two rows of honeycomb cells.

3. The stent for an interventional valve-in-valve of claim 1, wherein the honeycomb cells of the inflow end differ in area from the honeycomb cells of the middle row by no more than 10%.

4. The stent for an access valve in a valve of claim 1, wherein the stent has a height of 13-25mm, an inner diameter of 18-30mm, and a wall thickness of 0.35-0.65 mm.

5. The stent for an access valve in a valve of claim 1 wherein the sets of axial struts are the same size, the axial struts of the honeycomb cells of the inflow end and middle row are approximately the same size, and the axial struts of the outflow end and honeycomb cells are slightly larger in size than the axial struts of the honeycomb cells of the other two rows.

6. A stent used for an intervention valve, the stent is a metal mesh tube, the stent is provided with five rows of transversely extending circumferential struts and a plurality of rows of axial struts arranged among the circumferential struts, the axial struts of each row are arranged in a staggered way, wherein the first and second rows of circumferential struts on the lower side define the inflow end of the stent, the fourth and fifth rows of circumferential struts define the outflow end of the stent, each row of circumferential struts is formed by connecting a plurality of groups of angled struts, each group of the supporting rods is in a deformable V shape, the deformation angle is between 0 and 90 degrees, the axial struts and the transverse struts connected with the axial struts are connected to form staggered honeycomb grids, the area of the honeycomb grids at the inflow end is basically the same as that of the honeycomb grids in the middle row, and the area of the honeycomb grids at the outflow end is slightly larger than that of the honeycomb grids in the other three rows.

7. The stent for an interventional valve-in-valve of claim 6, wherein the honeycomb lattice of the outflow end is 10% -20% larger in area than the other three rows of honeycomb lattices.

8. The stent for an interventional valve-in-valve of claim 6, wherein the honeycomb cells of the inflow end differ in area from the honeycomb cells of the middle row by no more than 10%.

9. The stent for an access valve-in-a-valve of claim 6, wherein the stent has a height of 13-25mm, an inner diameter of 18-30mm, and a wall thickness of 0.35-0.65 mm.

10. The stent for an access valve in a valve of claim 6 wherein the sets of axial struts are the same size, the axial struts of the inflow end and middle row of honeycomb cells are approximately the same size, and the axial struts of the outflow end and honeycomb cells are slightly larger in size than the axial struts of the other three rows of honeycomb cells.