| 摘要 |
The apparatus comprises a flexible tubular body (14) for forming a prosthetic blood vessel wall and inflatable means such as a balloon catheter or cannula for selectively controlling blood flow through the tubular body during graft insertion and serving to locate and fix the graft in position so as to form communication between two relatively sound portions of the blood vessel. The tubular body may have an aperture for insertion and withdrawal of catheter and may have at each end a connector (18, 19) comprised of a flexible annular sleeve (26, 28) containing a ring (22) formed of a discontinuous band provided with overlapping ends having inter-engaging ratchet means for progressive expansion into sealing engagement with the blood vessel. To facilitate laparoscopic use of the device as an aorta by-pass graft, the apparatus may further include an insertion device (Fig. 6 - not shown) and a retractor (Fig. 5 - not shown) <IMAGE> |
