Surgery – Radioactive substance applied to body for therapy – Radioactive substance placed within body
Patent
1998-01-06
2000-09-12
O'Connor, Cary
Surgery
Radioactive substance applied to body for therapy
Radioactive substance placed within body
606192, 606194, 600 1, 600 4, A61N 500, A61M 300, A61M 2900
Patent
active
06117064&
ABSTRACT:
A catheter apparatus filled with a radiation carrier material such as an inert radioactive gas for the treatment of restenosis after angioplasty, and malignancies. The inflated catheter includes a plurality of discrete chambers for transporting the radioactive carrier material, and a plurality of discrete chambers enabling substantial blood flow through the artery during treatment with the prescribed radiation. The inflated catheter may also comprise one unit balloon. A specific metal coating enhances the radiation dose delivered to the target. The wall of the lumen attenuates transmission dose to the blood circulating through the hollow inner lumen of the catheter device. The system also creates increased by-product radiation, from the impact of beta particles and gamma protons traveling toward the lumen wall. In addition, two opposing balloons may be utilized that are inflatable in sequence enabling gas-tight redirection of radioactive gas flow from one balloon to the other, where one balloon is inflated to deliver a treatment dose, while the opposing balloon is deflated.
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Apple Marc G.
Apple Melvin J.
Godlewski Richard J.
Natnithithadha Navin
O'Connor Cary
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