Prosthetic valve prosthesis
An artificial valve and valve technology, applied in the field of medical devices, to achieve the effect of increasing the margin, preventing paravalvular leakage, and having good opening and closing functions
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specific Embodiment 1
[0053] Figure 1a It shows a schematic cross-sectional view of the left ventricle. When the artificial valve prosthesis is used to treat mitral valve diseases, a1-a2 is the central axis of the blood flow direction of the valve sewing segment, also known as the The axis line of the sewing section of the valve, b1-b2 is the central axis of the blood flow direction of the clamping device, a1-a2 is parallel to b1-b2, plane A is the closing plane of the native valve, and plane B is the On the opposite side of the closure surface of the native valve, the radial direction of the cross-section of the valve sewing section is called the radial direction of the valve sewing section, and the valve sewing section is close to the circumference of the axis line. The facing surface is an inner surface, and the circumferential surface of the valve sewing segment away from the axis line is an outer surface.
[0054] In one embodiment of the present invention, as Figure 1b As shown, an artifi...
specific Embodiment 2
[0057]In order to better illustrate the working principle of the present invention, the release process when the artificial valve prosthesis of the present invention is used for the treatment of mitral valve disease will be described step by step below:
[0058] like Figure 2a As shown, the artificial valve prosthesis is approached from the apex of the heart through the delivery system 2000 . like Figure 2b As shown, the delivery system 2000 includes a handle 2100, an outer sheath 2200 and an inner sheath 2300. By operating the handle 2100, the clamping device 1120 placed in the outer sheath 2200 is released. In the embodiment, the number of the clamping device 1120 is one, and at this moment, the stent and the artificial valve are still partially or completely compressed in the inner sheath 2300 . like Figure 2c-2d As shown, the free end of the self-adaptive section 1123 spreads away from the inside of the bracket to the outside of the bracket, forming an angle α; in an...
specific Embodiment 3
[0061] like Figure 4a As shown, an artificial valve prosthesis 1000 is used to treat mitral or tricuspid valve diseases, including a stent 1100 and an artificial valve 1200, the stent 1100 is made of shape memory alloy, and includes a valve sewing segment 1110 , at least one clamping device 1120 and an atrium segment 1130, the artificial valve 1200 is fixedly connected to the valve sewing segment 1110, the axis line of the valve sewing segment 1110 is a1-a2, and the valve sewing segment The section 1110 is also sewn with a polymer or animal-derived material (not shown) that can prevent the passage of blood flow, and the proximal end of the atrium section 1130 is integrally cut and fixedly connected with the distal end of the valve sewing section 1110 , is also sewn with polymers or animal-derived materials (not shown) that can prevent the passage of blood flow, and the projected area of the atrial segment 1130 in the radial direction of the valve sewing segment 1110 is grea...
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