09-01-2020 дата публикации
Номер: US20200008925A1
A dimpled stent design has geometrical characteristics, namely dimple width and depth, which generate dimple site specific turbulence and thrust within the blood flow to reduce or eliminate restenosis. The dimpled stent design is produced by laser processing of the stent material to produce different sizes, which may be predicted by a Multiphysics computational model, placements, and spatial layouts of dimples in the stent. 5. The method of claim 1 , wherein the stent material is a titanium alloy claim 1 , cobalt-chrome alloy claim 1 , or stainless steel.6. The method of claim 1 , further comprising the step of choosing a laser to generate a laser beam claim 1 , wherein the laser is a Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAlO) laser.7. The method of claim 1 , further comprising the step of choosing a laser to generate a laser beam claim 1 , wherein the laser operates at a laser power of 500 W to 1800 W.8. The method of claim 1 , further comprising the step of using a Multiphysics computational model to predict and define features of the one or more dimples produced at the targeted surface areas.10. The method of claim 8 , wherein width and depth of the one or more dimples produced at the targeted surface areas are determined based on the Multiphysics computational model.11. The dimpled stent produced by the method of .12. A dimpled stent claim 1 , comprising:circumferential walls enclosing a cylindrical inner space surrounding a central axis, wherein the circumferential walls comprise one or more laser produced dimples protruding outwardly away from the central axis to create one or more dimpled spaces in outer edges of the cylindrical inner space.13. The dimpled stent of claim 12 , wherein the dimpled stent is about 30 mm long and about 3.5 mm in diameter claim 12 , wherein the circumferential walls are about 0.1 mm thick claim 12 , and wherein the dimples have a depth of about 0.12 mm and a width of about 0.6 mm.14. A dimpled stent claim 12 , comprising:a ...
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