| 主权项 |
1. A dilator-introducer sheath complex for allowing repair of an aneurysm in an arterial blood vessel of a subject by first stopping the flow of blood through the arterial blood vessel, consisting of:
a) a dilator, consisting of:
i) an elongate generally rigid body having a length, a proximal end portion and distal end portion;ii) a tapered distal end portion;iii) a plurality of inflatable members positioned adjacent the distal end portion on the elongate generally rigid body;iv) the plurality of inflatable members being longitudinally spaced from one another by a distance of 2 cm to less than 5 cm and being proximal to the tapered distal end portion; andv) the elongate generally rigid body having a solid tubular structure with a generally uniform diameter throughout the length thereof, and including a plurality of peripherally oriented lumens in fluid communication with the respective plurality of inflatable members and a central channel for extending a guidewire therethrough; b) an introducer sheath including an open distal end portion and a proximal end portion; c) the dilator being slidably positioned inside of the introducer sheath to position a selected one of the plurality of inflatable members adjacent the open distal end portion of the introducer sheath; and d) wherein, upon inflation, the selected one inflatable member stops the flow of blood through the arterial blood vessel for allowing repair of the aneurysm. |
