Patent ID: 8623067
Filing Date: 2014-01-07
Classification: A61B,A61F

Abstract:
1. A braided stent, for implanting in a patient's vessel, comprising: a plurality of braided strands having an average strand thickness, the plurality of braided strands forming pores in open areas between strands, the open areas defining an open surface area; wherein the plurality of braided strands comprises a first plurality of strands consisting of a first metallic material and a second plurality of strands, consisting of a second metallic material, different from the first material, wherein each of the first plurality of strands has a first width and each of the second plurality of strands has a second width, different than the first width; wherein the first material comprises platinum; wherein the stent is self-expandable from a radially compressed configuration to a first radially expanded configuration and is adjustable from the first radially expanded configuration to a second radially expanded configuration in response to an axially compressive force; wherein the pores have an average pore length along a length of the stent; wherein the stent has a total porosity equal to a ratio of the open surface area of the stent to a total surface area of the stent; wherein a first portion of the braided stent, when in the first expanded configuration, is configured to adjust, in response to the axially compressive force, to the second expanded configuration, such that the first portion of the stent (i) reduces in length from a first length to a second length, (ii) reduces in porosity from a first porosity to a second porosity, and (iii) maintains a substantially equal lumenal cross-sectional dimension as in the first expanded configuration; and wherein, when the stent is in the first expanded configuration, the total porosity of the stent multiplied by the average pore length is between about 0.10 and about 0.85 mm.