Apparatus and method for delivering diagnostic and therapeutic agents intravascularly
First Claim
1. A coil apparatus for delivering diagnostic and therapeutic agents intravascularly, comprising:
- a resilient fiber core having a linear portion and a coiled portion; and
a polymer tubing encasing the resilient fiber core and adapting to the shape of the resilient fiber core, said polymer tubing comprising a first portion encasing the linear portion of the resilient fiber core and a second portion encasing the coiled portion of the resilient fiber core.
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Accused Products
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.
223 Citations
33 Claims
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1. A coil apparatus for delivering diagnostic and therapeutic agents intravascularly, comprising:
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a resilient fiber core having a linear portion and a coiled portion; and a polymer tubing encasing the resilient fiber core and adapting to the shape of the resilient fiber core, said polymer tubing comprising a first portion encasing the linear portion of the resilient fiber core and a second portion encasing the coiled portion of the resilient fiber core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for delivering diagnostic and therapeutic agents intravascularly, comprising the steps of:
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providing a coil apparatus having a resilient fiber core with a preset coiled portion, and a soft polymer tubing encasing the resilient fiber core and adapting to the shape of the resilient fiber core; placing said coil apparatus into a vessel; and causing a diameter of said coil apparatus to enlarge within the vessel. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. An apparatus for delivering diagnostic and therapeutic agents intravascularly, comprising:
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a resilient fiber core having a preset shape; and a polymer material covering the resilient fiber core and having a shape defined by the preset shape of the resilient fiber core said polymer material defining a space for containing an agent to be delivered intravascularly. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. In combination, a delivery apparatus for delivering diagnostic and therapeutic agents intravascularly and an deployment apparatus for deploying the delivery apparatus, the delivery apparatus comprising:
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a resilient fiber core having a preset shape; and a polymer material covering the resilient fiber core and having a shape defined by the preset shape of the resilient fiber core, said polymer material defining a space for containing an agent to be delivered intravascularly. - View Dependent Claims (32, 33)
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Specification