초록 ▼

Expandable intraluminal stents are provided as well their method of manufacture. These stents are made of metal, the metal characterized by a desired porosity, with a drug compressed into the pores of the stent. The stents are formed by subjecting one or more powdered metals in a die cavity to a pre

Expandable intraluminal stents are provided as well their method of manufacture. These stents are made of metal, the metal characterized by a desired porosity, with a drug compressed into the pores of the stent. The stents are formed by subjecting one or more powdered metals in a die cavity to a pressure treatment followed by a heat treatment. The metal may be cast directly in a stent-like form or cast into sheets or tubes from which the inventive stents are produced. The so-formed porous metal stent is then loaded with one or more drugs.

대표청구항 ▼

[ What is claimed is as follows:] [1.]1. A method of forming a stent comprising the steps of:providing a first powdered metal;providing a second powdered metal, the first powdered metal and second powdered metal having different compositions or different physical properties or both;treating the firs

[ What is claimed is as follows:] [1.]1. A method of forming a stent comprising the steps of:providing a first powdered metal;providing a second powdered metal, the first powdered metal and second powdered metal having different compositions or different physical properties or both;treating the first and second powdered metals to form a stent preform having a length, the stent preform including a first region formed of the first powdered metal and a second region formed of the second powdered metal, the first region displaced along the length of the stent preform from the second region;forming a stent from the stent preform.