| 摘要 |
<p>Device (A) for positioning a self-expanding endoprosthesis (21) comprises an external sheath (1) able to maintain (21) under radial contraction and a chick (4). Device (A) for positioning a self-expanding endoprosthesis (21) comprises an external sheath (1) able to maintain (21) under radial contraction and a chick (4) that extends axially inside (1) and can be moved, axially, with respect to (1). At the distal end (3), it includes a chamber (2) to receive an endoprosthesis (21), in radial contraction, where (2) ends distally in an atraumatic point (6) that can block (1). Point (6) is made of elastomer and includes a swellable chamber (10) and a port (9) that extends from the distal to the proximal ends of (4) to allow passage of fluid and opening out in (10). The new feature is that (10) has a thin wall and can be expanded at a pressure lower than 1 bar, insufficient to expand a channel intended to receive the prosthesis.</p> |
