REDUCED GRANULATION AND INFLAMMATION STENT DESIGN

摘要

A stent of the present disclosure has a variable radial force along the longitudinal length of the stent. In particular, the radial force of the center is greater than the radial force of the ends of the stent. Without being bound by theory, the radial force is affected by the strut angle θ, the wall thickness t, the number of strut pairs, and combinations thereof. In one aspect of the present disclosure, the stent has a variable strut angle θ, a variable wall thickness t, and a variable number of strut pairs. By adjusting the strut angle θ, the wall thickness t, and the number of strut pairs of the serpentine bands, the stent will have a variable radial force without the need for additional processing steps.

主权项

1. A stent having a longitudinal length, a radial force that varies along the longitudinal length, and a plurality of interconnected serpentine bands, wherein each serpentine band comprises struts interconnected by proximal turns and distal turns, each serpentine band having a strut angle, a number of strut pairs, and a wall thickness, the serpentine bands comprising a first serpentine band having a first radial force and a second serpentine band having a second radial force less than the first radial force, wherein:
the strut angle of the first serpentine band is less than the strut angle of the second serpentine band; the number of strut pairs of the first serpentine band is greater than the number of strut pairs of second serpentine band; and the wall thickness of the first serpentine band is greater than the wall thickness of the second serpentine band.