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Drug delivery PTCA catheter and method for drug delivery

  • US 5,397,307 A
  • Filed: 12/07/1993
  • Issued: 03/14/1995
  • Est. Priority Date: 12/07/1993
  • Status: Expired due to Term
First Claim
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1. An intravascular drug delivery dilatation catheter comprising:

  • an elongated, flexible, tubular catheter shaft having a proximal end and a distal end with a first, second and third lumen each extending therealong, said shaft having first and second inflatable balloons longitudinally spaced from one another proximate said distal end and with a drug delivery region disposed between said first and second balloons, said first and second lumens being in fluid communication with said first and second balloons, respectively, and said third lumen being in fluid communication with said drug delivery region, said second balloon when inflated having an outer contoured surface for creating a fluid flow path from said drug delivery region and along said second balloon outer surface when said second balloon is inflated in a patient'"'"'s blood vessel.

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