Conformable stent structure and method of making same

摘要

A stent (10) is provided with a plurality of stent rings (12) formed of a plurality of interconnected struts (14). Adjacent stent rings (12) are coupled to one another by a plurality of tie bars (16). Within each tie bar (16) there is provided a hinge (36) which facilitates the curving of the stent (10) in its longitudinal direction and minimizes the generation of returning force to a non-curved configuration by the stent (10). The hinge could, for example, be formed by heat treating a portion of the tie bar (16). This arrangement is particularly suitable for stents or other medical devices intended to be placed in delicate vessels, such as cerebral vessels.