Low profile perfusion catheter
AssigneeCardiovascular Dynamics, Inc.
InventorMichael Crocker
Life of this patent
Estimating the term…
Abstract
Disclosed is a Low Profile Perfusion Catheter, for use in coronary angioplasty applications. Preferably, the catheter is provided with an inflatable dilatation balloon, and a perfusion lumen extending therethrough. The diameter of the perfusion lumen is enlargable from a first, reduced diameter to a second, enlarged diameter. In one embodiment, an axially movable tubular support is movable within the lumen from a proximal, insertion position to a distal perfusion position. In another embodiment, the support is radially expandable. In a further embodiment, a porus drug delivery balloon is provided.
Claims7
A balloon catheter, comprising:
- an elongate, flexible, tubular body;
- an inflatable balloon on the tubular body, said balloon expandable from a first, reduced diameter to a second, enlarged diameter;
- and
- a perfusion conduit extending through said inflatable balloon, at least a portion of said perfusion conduit expandable from a first reduced diameter to a second enlarged diameter;
- wherein said second, enlarged diameter of said perfusion conduit is larger than the first, reduced outer diameter of said deflated balloon.
A method of treating a site in a body lumen, comprising the steps of:
- providing a catheter of the type having an elongate, flexible, tubular body, a dilatation balloon on the body, and at least one influent port on a first side of the balloon in fluid communication with at least one effluent port on a second side of the balloon, said influent and effluent ports in fluid communication with each other by way of a central lumen extending through the catheter;
- positioning the catheter within a body lumen so that the balloon is adjacent a treatment site;
- inflating the balloon to treat the site;
- and
- holding the central lumen open to resist collapse and optimize fluid flow therethrough, wherein said holding step comprises positioning a support structure within the lumen to maintain patency of the lumen by moving the support structure from a proximal insertion position to a distal perfusion position within the central lumen.
A catheter comprising:
- an elongate, flexible, tubular body;
- a central lumen extending through at least a portion of the body;
- at least one influent port extending through the wall of the tubular body and communicating with said central lumen;
- at least one effluent port extending through the wall of the tubular body and communicating with the central lumen;
- wherein the central lumen is expandable from a first, reduced fluid flow capacity to a second, increased fluid capacity;
- and
- a support for maintaining the central lumen in the second, increased fluid flow capacity;
- wherein said support is axially moveable from a first, proximal position to a second, distal position, wherein said distal position is within said central lumen.
Dependencies are inferred from the claim text.