Surgery – Radioactive substance applied to body for therapy – Radioactive substance placed within body
Patent
1997-09-26
1999-08-17
Lacyk, John P.
Surgery
Radioactive substance applied to body for therapy
Radioactive substance placed within body
A61N 500
Patent
active
059385820
ABSTRACT:
An apparatus for centering a radiation delivery device at a selected location in a body vessel such as a coronary artery. An elongated catheter is insertable into the body vessel until the catheter head is in the desired position. The catheter has a guidewire lumen, inflation lumen and treatment lumen running lengthwise. The catheter head includes an expandable mechanism for engaging the vessel internal wall with the treatment lumen centered in the vessel. At least one channel is provided extending past the expandable mechanism so that a fluid, such as blood, can perfuse past the catheter head. A radiation delivery device, such as a wire having a radiation source at the distal end can be inserted into the treatment lumen to uniformly irradiate the vessel wall at the selected location.
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Ciamacco, Jr. Sam
Mohn, Jr. Michael A.
Stiger Mark L.
Duncan John R.
Lacyk John P.
Latham Dianne Plunkett
Medtronic Inc.
Patton Harold R.
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