A Review on Phosphorylcholine-Coated Stents

Area of Science:

• Biomaterials Science
• Cardiovascular Medicine
• Medical Device Engineering

Background:

• Stainless steel stents are crucial after percutaneous transluminal coronary angioplasty (PTCA) to prevent arterial recoil.
• Subacute thrombosis (SAT) was a major complication, though largely mitigated by antiplatelet agents.
• Stent occlusion persists as a risk, especially for complex lesions, necessitating improved hemocompatibility.

Purpose of the Study:

• To evaluate a novel phosphorylcholine (PC)-based coating for stainless steel stents.
• To assess the hemocompatibility, biocompatibility, and clinical performance of PC-coated stents.
• To explore the potential of PC-coated stents as a platform for drug delivery.

Main Methods:

• In vitro, preclinical, and early clinical evaluations of PC-coated stents.
• Assessment of stent surface hemocompatibility and interaction with arterial tissue.
• Analysis of long-term stability and therapeutic agent loading/release capabilities.

Main Results:

• The PC-coated stent demonstrated a nonthrombogenic nature.
• Excellent acceptance by arterial tissue and long-term stability in vivo were observed.
• The coating showed potential clinical advantages over uncoated stents.

Conclusions:

• PC-coated stents exhibit favorable hemocompatibility and biocompatibility.
• The device shows promise for reducing stent occlusion and restenosis.
• PC-coated stents are a viable platform for future stent-mediated drug delivery systems.