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Angioplasty, Laser technology, Restenosis, Metallosis, Excimer Laser

Modern Angioplasty is an alternative to bypass heart surgery because of safety and validity. As we know that the Heart diseases has risen to become that number of deaths in most of the developing or developed countries due to the high increase rates of obesity, drug dependence, and diabetes. Stents are used throughout the body but the most critical area being coronary arteries. Convention Material like Stainless Steel 316LN is used before, now a day’s Smart Materials like Nitinol is having wider application in Angioplasty. This paper presents the comparison and limitations of the Shape memory alloy [Nitinol] technology with that of Laser technology. The several materials used in angioplasty for stenting are Stainless steel 316LN, Titanium and Nitinol. Laser technology finds more beneficial due to its rapid growth in technology and also more advantageous because of the alloys used are resistant to corrosion, yet the corrosion occurs when two dissimilar surfaces are in contact and this happens in almost all alloys These devices have been used for only a few years and, although initial results look promising, long-term effects have not been fully investigated. It's important to note that, if restenosis recur there is no good method to simply remove the blockage, and follow-up treatments may require laser surgery or localized drug delivery using other angioplasty devices.