Delivery and temporary stent catheter having a reinforced perfusion lumen
First Claim
1. A temporary stent for maintaining patency of a body lumen while permitting perfusion of fluid through the lumen, comprising:
- an elongate catheter body;
an inflatable balloon on the distal end of the catheter body; and
at least one perfusion conduit extending through the inflatable balloon, the wall of said perfusion conduit further comprising a spring coil;
wherein the longitudinal axis of the perfusion conduit is laterally offset from the longitudinal axis of the adjacent catheter body by a distance which exceeds the radius of the adjacent portion of the elongate catheter body.
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Accused Products
Abstract
Disclosed in an improved temporary stent and drug delivery catheter, for use in the prevention of restenosis of a dilated vascular region, and/or for use in the delivery of a medication to a preselected vascular site. The catheter comprises an elongate body, a perfusion conduit laterally offset from the axis of the catheter body, and an inflation balloon disposed about the perfusion conduit and at the end of the catheter body. In a drug delivery embodiment, a perforated drug delivery balloon is disposed concentrically about the inflation balloon. A first lumen extends through the catheter body for communicating with the inflation balloon, and a second lumen extends through the body for communicating with the drug delivery balloon. Methods of preventing restenosis during a post procedure observation period and of drug delivery to the vascular intima are also disclosed.
317 Citations
12 Claims
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1. A temporary stent for maintaining patency of a body lumen while permitting perfusion of fluid through the lumen, comprising:
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an elongate catheter body; an inflatable balloon on the distal end of the catheter body; and at least one perfusion conduit extending through the inflatable balloon, the wall of said perfusion conduit further comprising a spring coil; wherein the longitudinal axis of the perfusion conduit is laterally offset from the longitudinal axis of the adjacent catheter body by a distance which exceeds the radius of the adjacent portion of the elongate catheter body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11)
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9. A delivery catheter for delivering a quantity of a liquid or gas to a preselected site in a body lumen, comprising:
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an elongate catheter body; an inflation balloon on the distal end of the catheter body; a delivery balloon on the catheter, disposed adjacent the inflation balloon; a first lumen extending through the catheter for communication with the inflation balloon; a second lumen extending through the catheter for communication with the delivery balloon; and a bypass conduit extending through the inflation balloon and the delivery balloon, the wall of said bypass conduit further comprising a spring coil; wherein the longitudinal axis of the bypass conduit is generally parallel to and laterally offset from the elongate catheter body.
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12. A delivery catheter for delivering a quantity of a liquid or gas to a preselected site in a body lumen, comprising:
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an elongate catheter body; an inflation balloon on the distal end of the catheter body; a delivery balloon on the catheter, disposed adjacent the inflation balloon; a first lumen extending through the catheter for communication with the inflation balloon; a second lumen extending through the catheter for communication with the delivery balloon; and a bypass conduit extending through the inflation balloon and the delivery balloon, said the bypass conduit comprising a support structure for resisting radial compression of the bypass conduit; wherein the longitudinal axis of the bypass conduit is generally parallel to and laterally offset from the elongate catheter body.
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Specification