Apparatus and method for delivering diagnostic and therapeutic agents intravascularly
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United States of America Patent
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Apr 25, 2000
Issued Date -
N/A
app pub date -
Oct 7, 1998
filing date -
Feb 16, 1996
priority date (Note) -
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Abstract
An apparatus and method for delivering diagnostic and therapeutic agents intravascularly in which the apparatus has a shape defined by a preset shape of a resilient fiber core. The resilient fiber core is covered by a soft polymer tubing or other polymer material to form a delivery apparatus that takes the shape of the resilient fiber core. Various shapes and structures are disclosed that infuse diagnostic and therapeutic agents through a lumen of the polymer tubing, that deliver the agents in the form of a soluble coating, and that circulate or contain a preloaded charge of radioactive material for intravascular radiotherapy. The resilient fiber core and soft polymer material permit the construction of a very small apparatus that can be removed easily following treatment. Various deployment systems are disclosed for deploying the delivery apparatuses into a vessel and for protecting against radiation exposure.
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