Cannula introducing device for use in extracorporeal circulation system, has expandable structure that is transferred from non-expandable condition into expandable condition by dilator, where structure has opening in expandable condition

摘要

The device has a cannula (32) with a proximal end and a distal end (34) and an intermediate section situated between the ends. The distal end has an expandable structure (36) that is transferred from a non-expandable condition into an expandable condition by a dilator. The expandable structure has an opening (38) in the expandable condition, and has a material i.e. Nitinol(RTM: Shaped memory alloy). The material can be selected from the group consisting of an elastic plastic, super-elastic plastic, elastic metal and super elastic metal.