| 摘要 |
PROBLEM TO BE SOLVED: To provide devices and methods for stent advancement, including methods for instructing another or others how to advance a stent into an anatomical structure or into a testing/demonstration synthetic structure, such as a polymer tube.SOLUTION: A device comprises: a stent-engaging element 45 positioned within the lumen of a stent 30 disposed within an outer sheath 20; and a stent-retention element 70 coupled to a proximal end 32 of the stent. The stent-engaging element is operated in a reciprocating manner to engage and advance the stent distally out of the outer sheath, and the stent-retention element stays in contact with the stent during proximal movement of the stent-engaging element provided that the proximal end of the stent is disposed within the outer sheath. The advancement may be achieved by at least two periods of stent engagement that drive a stent distally from a sheath separated by a period of non-engagement. |
