Strength and displacement of open cell designs of coronary stent in responding of various inflated pressures

Coronary stent metal-based, either Bare Metal Stent or Drug Eluting Stent types, has been the best method for treatment patient with cardiovascular blood blockage. Although non-metal stent has been introduced with claiming of absorbable characteristic, this metal type is still applicable up to now. Various materials and designs of strut-link are commercially exists. Design a new stent, is not only medical aspect such as anti-thrombosis and restenosis as the main ultimate goal, but also doctor and engineering aspects need to be considered. In engineering point of view, beyond biocompatibility and mechanical properties of material, design of strut and link with closed and open cell play important role to address those needs. This paper simulated how open cell stent structure with diameter of 2mm and the length of 20mm was designed to allow standing on radial pressure of 0.8, 1.6 and 2 MPa generated by inflated balloon that may occur during stent placement. Results of the investigation will be discussed.