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  • Balloon angioplasty catheters designed for percutaneous transluminal coronary angioplasty that are capable of local delivery of drugs either before, during, or after dilatation of the lesion. These catheters may deliver the drugs using a variety of techniques, including: (1) porous balloons with laser-drilled holes to deliver the drugs; (2) two-balloon devices that isolate the segment of the lesion permitting its filling with the drug; (3) injection of nanoparticles loaded with the drug; and (4) use of drug-coated balloons (also known as drug-eluting balloons). Drug delivery coronary balloon catheters are used for local administration of concentrated drugs directly to the site of arterial injury during coronary angioplasty procedures.
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