Patent ID: 7879084
Filing Date: 2011-02-01
Classification: A61F

Abstract:
1. A stent comprising: a plurality of wavy annular members arranged adjacently to each other in an axial direction thereof, with said axially adjacent wavy annular members connected with each other, wherein each of said wavy annular members has a plurality of one-end side bent portions each having an apex at one side of said stent in an axial direction thereof and a plurality of other-end side bent portions each having an apex at said other side of said stent in said axial direction thereof, said one-end side bent portions arranged in axially offset and circumferentially offset relationship with respect to said other-end side bent portions of the same wavy annular member, wherein circumferentially adjacent one-end side bent portions of each wavy annular member are spaced apart by first circumferential spaces, and circumferentially adjacent other-end side bent portions of each wavy annular member are spaced apart by second circumferential spaces, said apex of each of said one-end side bent portions of each wavy annular member penetrates into a second space formed between said circumferentially adjacent other-end side bent portions of an axially adjacent wavy annular member, and said apex of each of said other-end side bent portions of each wavy annular member penetrates into a first space formed between circumferentially adjacent one-end side bent portions of an axially said adjacent wavy annular member; and said apex of each one-end side bent portion of each of said wavy annular members being nested in mutually engaging, circumferentially overlapping relationship with said apex of an other-end side bent portion of said axially adjacent wavy annular member; wherein the one-end side bent portions are connected to the other-end side bent portions of the same wavy annular member by a stratum portion of the wavy annular member, the stratum portion comprising circumferentially alternating long and short wavy stratum portions, each long stratum portion including an intermediate section inclined toward an intermediate section of a circumferentially adjacent short stratum portion.