Abstract: A method for measuring an earth resistance in a battery charging system, including the steps of injecting a measuring signal in alternating current between a first, neutral node and a second, earth node, detecting a voltage signal representing an electrical potential difference between the first and the second node, processing the voltage signal so as to extract a first signal having a frequency equal to that of the measuring signal and a phase correlated thereto, and calculating an earth resistance value as a function of a ratio between the measuring signal and a reference value of said first signal.

Abstract: A cardiac stent-valve (1), preferably a mitral stent-valve, comprising a stent component (2) and a valve component (3), wherein the stent component (2) comprises an inflow end (4) and an outflow end (5) and a wall between the inflow (4) and the outflow end (5), and wherein the valve component (3) is made of one single leaflet (6); the periphery of said single leaflet (6) being partially attached or attachable to the stent component (2) along at least fixation lines (7?, 7?), characterized in that said two fixation lines (7?) are at least partially inclined with respect to an annular plane of said valve perpendicular to a flow direction (A) through the stent-valve (1) and wherein the third fixation line (7?) runs parallel with respect to said plane.

Abstract: A cardiac stent-valve (1), preferably a mitral stent-valve, comprising a stent component (2) 14 and a valve component (3), wherein the stent component (2) comprises an inflow end (4) and an outflow end (5) and a wall between the inflow (4) and the outflow end (5), and wherein the valve component (3) is made of one single leaflet (6); the periphery of said single leaflet (6) being partially attached or attachable to the stent component (2) along at least fixation lines (7?, 7?), characterized in that said two fixation lines (7?) are at least partially inclined with respect to an annular plane of said valve perpendicular to a flow direction (A) through the stent-valve (1) and wherein the third fixation line (7?) runs parallel with respect to said plane.