It involves threading a replacement valve up to the heart using a catheter inserted into the top of the leg.
Times, Sunday Times (2009)
In the first group (n = 18) after mechanical recanalisation with wire we used a catheter for thrombus aspiration.
M Yu Movsesyants, S A Belyakin, V A Ivanov, I V Trunin, V V Mayskov, A V Ivanov, Yu A Bobkov, S A Terekhin 2010, 'Thrombus aspiration catheter in acute coronary occlusions', RUDN Journal of Medicine