Body implants stents

Different types of stents are common examples of body implants. A stent is a woven, knitted or braided cylindrical mesh structure made of stainless steel, nitrol or chrome-cobalt alloy that is inserted in a diseased or contracted artery or vein to restore a free blood flow by keeping the vessel open. The stent can be coated with substances to obtain specific properties or for continuous release (a drug-eluting stent) to inhibit cellular growth that may lead to repeated occlusion. 

Massey et al. studied the influence of LEE irradiation on plasma polymerized allylamine (Massey et al. 2010) and fluorocarbon (Massey et al. 2008b) coatings for stent applications to simulate irradiation conditions of implanted coated stents in the human body dnring diagnostic exposure to... 

Recently, the concept of controlled corrosion has been proposed as a way to provide implantable devices that can perform a function (e.g., a stent or drug delivery vehicle) and then erode away over time and leave no permanent trace in the body. Some polymeric materials based on this concept have been turned into products, and some magnesium alloys are currently being investigated. 

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