Unlock instant, AI-driven research and patent intelligence for your innovation.

Artificial heart valve

An artificial heart valve and artificial valve technology, applied in the field of medical devices, can solve the problems of right ventricular outflow tract obstruction, left ventricular outflow tract obstruction, increase the difficulty of delivery and the risk of blood vessel damage, and achieve easy gripping and loading, Effect of improving fatigue resistance

Pending Publication Date: 2020-10-16
SHANGHAI TRULIVE MEDTECH CO LTD
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. For the existing mitral valve prosthesis, the diameter of the delivery catheter is very large, which increases the difficulty of delivery and the risk of vascular injury
[0007] 3. The structure of the atrioventricular valve assembly is complex. If the subvalve height of the prosthetic valve is too high, it will affect the original heart structure and heart function, touch the papillary muscle and other heart tissue abnormalities, and at the same time easily cause left ventricular outflow tract obstruction (LVOT), induce adverse postoperative effects
[0008] The tricuspid valve also has the problem of high subvalvular height and right ventricular outflow tract obstruction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Artificial heart valve
  • Artificial heart valve
  • Artificial heart valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a mitral artificial heart valve, see Figure 1-Figure 12 , is a schematic diagram of the heart valve of this embodiment, wherein the heart valve includes a stent body 110 for supporting the artificial valve leaflets, and an anchoring frame 210 for anchoring the stent body 110 to the annulus; the anchoring frame 210 is disposed close to At a predetermined position of the left ventricular outflow tract, the stent body 110 is disposed outside the anchoring frame 210 and at a predetermined position away from the left ventricular outflow tract, and the anchoring frame 210 abuts against and connects with the stent main body 110 .

[0053] At least two artificial leaflets are disposed in the stent body 110 , the number of artificial leaflets may be the same as or different from the original leaflets, and each leaflet is arranged along the circumference of the stent body 110 . The leaflets can be fixed to the stent body 110 by direct connection or indir...

Embodiment 2

[0073] This embodiment provides a tricuspid artificial heart valve. The structure of the heart valve of this embodiment is similar to that of Embodiment 1, the difference is that the stent body 110 of this embodiment is implanted in the valve ring in the right ventricular inflow tract , the anchoring frame 210 is fixed at a predetermined position close to the right ventricular outflow tract.

[0074] In order to reduce the influence of the heart valve on the right ventricular outflow tract, the outflow section 213 is set gradually away from the right ventricular outflow tract, thereby reducing the risk of right ventricular outflow tract obstruction.

Embodiment 3

[0076] This embodiment provides an artificial heart valve, which is an improvement on the basis of Embodiment 1 or Embodiment 2, wherein the abutting portion 215 between the anchoring frame 210 and the stent body 110 is a single-layer structure.

[0077] In one example, see Figure 13 , is a schematic diagram of the artificial heart valve of this embodiment, wherein the anchoring frame 210 is a non-closed structure. That is, the anchoring frame 210 is an opening structure along the axial direction, and its cross-section is C-shaped. connect.

[0078] In another example, see Figure 14 , is a schematic diagram of the artificial heart valve of the present embodiment, wherein the stent body 110 is a non-closed structure, the stent body 110 is an open structure along the axial direction, and its cross section is C-shaped, and the open end of the stent body 110 is the main body The open end 301, the main body open end 301 touches the outer periphery of the anchor frame 210 and i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Outer diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an artificial heart valve. The artificial heart valve comprises a stent main body supporting artificial valve leaflets, and an anchoring frame for anchoring the stent main bodyto a valve ring position; the anchoring frame is arranged at a preset position near the side of an outflow tract; the stent main body is arranged at a preset position outside the anchoring frame andaway from the side of the outflow tract; and the anchoring frame and the stent main body are abutted and connected. Compared with a single-layer stent, the stent main body and anchoring frame of the artificial heart valve are used for valve leaflet supporting and anchoring respectively; the radial size of the stent main body is relatively small, so that the size of the artificial valve leaflets isalso relatively small, and the fatigue resistance of the valve leaflets is improved; the size of the valve leaflets is reduced, so that a valve leaflet material is correspondingly reduced; compared with a double-layer stent nested inside and outside, the size of the anchoring frame is reduced, so that the material of the anchoring frame and a skirt material are fewer; and the fewer the materialsare, the smaller the size is after press-gripping, and the artificial heart valve is easier to press-grip and load.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a heart valve prosthesis for implanting in the heart. Background technique [0002] The heart has four chambers, the left atrium and left ventricle are on the left side of the heart, and the right atrium and right ventricle are on the right side of the heart. The atrium and ventricle form the ventricular inflow tract, the left ventricle and the aorta form the left ventricular outflow tract, and the right ventricle and the pulmonary artery form the right ventricular outflow tract. There are valves with the function of "one-way valve" at the ventricular inflow and ventricular outflow to ensure the normal flow of blood in the heart chamber. When there is a problem with this valve, the hemodynamics of the heart are altered and the heart functions abnormally, which is called valvular heart disease. [0003] Mitral regurgitation leads to myocardial remodeling, progressive ven...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61F2/24
CPCA61F2/2412A61F2/2418A61F2/2463A61F2/2466A61F2220/0025
Inventor 不公告发明人
Owner SHANGHAI TRULIVE MEDTECH CO LTD