Percutaneous heart valve prosthesis

摘要

A percutaneous heart valve prosthesis (1) has a valve body (2) with a passage (9) extending between the first and second ends (7, 8) of the valve body (2). The valve body (2) is collapsible about a longitudinal axis (10) of the passage (9) for delivery of the valve body (2) via a catheter (18). One or more flexible valve leaflets (3, 4) are secured to the valve body (2) and extend across the passage (9) for blocking bloodflow in one direction through the passage (9). An anchor device (5), which is also collapsible for delivery via catheter (18), is secured to the valve body (2) by way of an anchor line (6). A failed or failing mitral heart valve (101) is treated by percutaneously locating the valve body (2) in the mitral valve orifice (102) with the anchor device (5) located in the right atrium (107) and engaging the inter-atrial septum (103), such that the taught anchor line (6) acts to secure the valve body (2) within the mitral valve orifice (102).

主权项

1. A percutaneous heart valve prosthesis comprising:
a valve body having a first longitudinal extremity defining a valve body first end a longitudinally opposing second longitudinal extremity defining a valve body second end, said valve body further having a passage extending along a longitudinal axis between said valve body first end and said valve body second end, said valve being collapsible about said longitudinal axis from an uncollapsed state to a collapsed state for delivery via catheter; and one or more flexible valve elements secured to said valve body and extending across said passage for blocking bloodflow in one direction through said passage from said valve body second end to said valve body first end; wherein said valve body tapers linearly continuously along its longitudinal extent between said valve body first end and said valve body second end in said uncollapsed state, from said valve body second end to said valve body first end, said valve body first end being sized, in said uncollapsed state, to pass through a valve orifice associated with a heart valve to be replaced, said valve body second end being sized, in said uncollapsed state, so as not to pass through the valve orifice, said second end being broader than said first end in said uncollapsed state.