公开(公告)号：US20070233231A1

公开(公告)日：2007-10-04

申请号：US11278052

申请日：2006-03-30

Applicant: Michael Krivoruchko ,  Joseph Lessar ,  Richard Francis ,  MATHEW BIRDSALL ,  JEFFREY ALLEN ,  DARREL UNTEREKER

Inventor： Michael Krivoruchko ,  Joseph Lessar ,  Richard Francis ,  MATHEW BIRDSALL ,  JEFFREY ALLEN ,  DARREL UNTEREKER

IPC: A61F2/94

CPC classification number: A61F2/915 ,  A61F2/91 ,  A61F2002/91508 ,  A61F2002/91516 ,  A61F2002/91541 ,  A61F2002/91558 ,  A61F2230/0013 ,  A61L31/022

Abstract: A balloon-expandable stent formed from a customized alloy formulation. The stent alloy has a either a high, variable or no work hardening rate, very high modulus of elasticity (Young's modulus), and a low yield point. A stent constructed of a material with this combination of properties undergoes significant plastic deformation upon deployment in vivo to its implantation diameter and exhibits minimum recoil for better sizing. The plastic deformation also raises the subsequent yield point of the stent material resulting in a stronger stent upon implantation that is more resistant to vascular loading.

Abstract translation: 由定制的合金制剂形成的球囊扩张支架。 支架合金具有高的，可变的或没有加工硬化率，非常高的弹性模量（杨氏模量）和低屈服点。 由具有这种性质组合的材料构成的支架在体内部署到其植入直径时经历显着的塑性变形，并且显示出最小的反冲以获得更好的上浆。 塑性变形也提高了支架材料的随后屈服点，从而导致植入时更坚固的支架，其更能抵抗血管负荷。