Irradiation catheter and method of use
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United States of America Patent
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Apr 6, 1999
Issued Date -
N/A
app pub date -
May 6, 1996
filing date -
Jul 15, 1993
priority date (Note) -
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Abstract
A catheter for use with a radioactive source within the catheter to irradiate a selected area of a blood vessel in combination with angioplasty procedures, to prevent restenosis of that area of the blood vessel. The catheter has a guidewire channel formed near its distal end to facilitate use of the catheter as a rapid exchange catheter, allowing insertion of the catheter over a guidewire also used in performance of an angioplasty procedure. The catheter can also have a guidewire channel formed near its proximal end to provide an O-ring sealing surface and to facilitate free guidewire movement. The catheter also has a closed end to retain the radioactive source within the catheter. The catheter can also be provided with a centering balloon or a set of centering wire loops to center the radioactive source radially within the blood vessel.
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