Patent ID: 7163504

Claim:
A multi-lumen balloon radiation centering catheter assembly, comprising: a multi-lumen balloon having a plurality of inflatable outer lumens disposed around a central lumen, the plurality of outer lumens integrally coupled with the central lumen so as to form the multi-lumen balloon with a continuous perimeter; and a catheter shaft disposed proximate to the balloon, the catheter shaft including an inner lumen longitudinally extending through at least a portion of the catheter shaft proximate the balloon and connected to the central lumen, the inner lumen adapted for receiving a radiation source lumen, the inner lumen further adapted for receiving a guidewire lumen for positioning the multi-lumen balloon radiation centering catheter within a body vessel, wherein the guidewire lumen extends lengthwise through one of the plurality of outer lumens, and wherein slideable seals are provided to seal both ends of the multi-lumen balloon where the guidewire is received.