×

Braided scaffolds

  • US 10,004,834 B2
  • Filed: 09/12/2014
  • Issued: 06/26/2018
  • Est. Priority Date: 09/13/2013
  • Status: Expired due to Fees
First Claim
Patent Images

1. A self-expanding stent for treating a peripheral vessel, comprising:

  • a segmented braided scaffold including a plurality of braided scaffold segments configured to be deployed end to end in a vessel, andat least three of the braided scaffold segments are hybrid segments, each of which comprising non-degradable filaments and degradable filaments woven to form a tubular configuration,wherein upon deployment of the scaffold from a collapsed state to a deployed state in a body cavity, the degradable filaments degrade and a radial strength or stiffness of the hybrid segments decreases with time,wherein when the degradable filaments are completely degraded, each hybrid segment comprises a residual stiffness provided by the non-degradable filaments, andwherein a hybrid proximal end segment a hybrid distal end segment of the scaffold have a higher radial strength or stiffness at deployment than a middle hybrid segment thereof, while having the same residual radial strength or stiffness as the middle hybrid segment, and wherein a first degradable polymer filament of the proximal and distal hybrid end segments has a higher degradation rate than a second degradable polymer filament of the middle hybrid segment so that a rate of decrease to the residual strength or stiffness is faster for the proximal and distal hybrid end segments than the middle hybrid segment.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×