Figure 2. Different DES Designs
Design characteristics (cross-sectional cut) of representative drug-eluting stents and bioabsorbable scaffold/stents. The characteristics of past and current commercial drug-eluting stents including durable polymer (DP)-, biodegradable polymer (BP)-, and polymer free-DES. Types of materials (alloy, drug, and polymer), strut thickness, and estimated duration of polymer absorption (in BP-DES) for each stent are described. CoCr, cobalt chromium; Ir, iridium; Mo, months; PBMA, poly(butyl methacrylate); PC, phosphorylcholine-coated; PCL, poly-ɛ-caprolactone; PDLA, poly-d-lactic acid; PDLGA, poly(d,l-lactide-co-glycolide); PDLLA, poly-d,l-lactic acid; PEVA, poly (ethylene-vinyl acetate); PGA, polyglycolic acid; PLGA, poly(lactide-co-glycolide); PLLA, poly-l-lactic acid; Pt, platinum; SS, stainless steel.