Device for releasing a self-expanding endoprosthesis

Abstract

Abstract The assembled endoprosthesis is in a radially tensioned state in a cylindrical space (14) and lies with a proximal region (A) in a first external catheter (3) and with a distal region (B) in a second external catheter (30). In order to release the endoprosthesis (1), for example in a vessel (11), the second external catheter (30) is initially retracted. The endoprosthesis (1) is then still retained in the first external catheter (3) by friction and can be folded back by advancing the second external catheter (30), and can thus be repositioned. The endoprosthesis (1) is finally released by retracting the first external catheter (3). Since the friction is divided up over at least two external catheters (3, 30) it is also possible to release endoprostheses (1) which have a high friction on the outside to the external catheter, for example due to a coating, high expansion force or large length. <IMAGE>

Inventors

• 👤 Goran Lukic
• 👤 Eugen Hofmann

Bibliographic Details