| 摘要 |
This device for transcatheter insertion into the aortic root at the sinotubular junction by means of a wire guide and a catheter (1) with a means for protecting the surrounding tissues is characterised in that it comprises an assembly (E) acting as a valved embolic filter, mounted with the ability to slide in a guided manner into said catheter (1), said assembly (E) having arrangements capable of producing, in each aortic root (RA), a safety chamber carrying out a valve function and a protective function protecting against embolic accidents, said arrangements comprising a tubular body (2) secured, at one of the ends of same, to a part (2a) capable, as required, of being either deployed outside the catheter (1), or retracted into the catheter (1), said part (2a) having filtration arrangements combined with means capable of reproducing the temporary valve function corresponding to opening during the systolic phase and to closing during the diastolic phase in order to prevent any regurgitation of blood in a deployed position of said part to cover the native aortic valve with a seat secured in the aortic root at the sinuses of Valsalva without blocking the blood flow. |
