| 摘要 |
A class of introducers is comprised of a plurality of straight sections and at least two curved sections with a pre-determined sense of curvature preceded, separated and followed by the straight sections, which introducer is adapted by its shape to access the septal wall or apex of a heart. One of the plurality of straight sections is a distal-most straight section. The straight and curved sections define a predetermined three dimensional shape by means of the distal straight section lying out of plane with respect to the remaining curved and straight sections. |
