Coaxial balloon catheter
First Claim
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1. A coaxial balloon catheter, comprising:
- an elongated inner body;
an elongated outer body surrounding a portion of said elongated inner body;
a balloon having a proximal end attached to a first portion of the elongated outer body and having a distal end attached to a second portion of the elongated outer body.
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Abstract
A coaxial balloon catheter (50) includes an elongated inner tube (14), an elongated outer tube (16) residing on the exterior of the elongated inner tube, and a balloon (20) having a distal end (22) attached to a first portion of the elongated outer tube and having a proximal end (21) attached to a second portion of the elongated outer tube. This arrangement prevents the balloon from telescopingly buckling when being pushed across a narrow passage.
36 Citations
20 Claims
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1. A coaxial balloon catheter, comprising:
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an elongated inner body;
an elongated outer body surrounding a portion of said elongated inner body;
a balloon having a proximal end attached to a first portion of the elongated outer body and having a distal end attached to a second portion of the elongated outer body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A balloon dilatation catheter comprising:
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an elongate, flexible catheter shaft including a two tube, two lumen configuration, the shaft having a proximal region, a proximal end and a distal end, wherein the shaft is formed from an inner tube defining a guidewire lumen therethrough, and a surrounding outer tube coaxial with the inner tube and defining an annular inflation lumen therebetween, the inner tube being of smaller diameter than the outer tube;
an inflatable dilatation balloon having a proximal end and a distal end, the proximal end of the balloon being attached to a first distal region of the outer tube, the distal end of the balloon being attached to a second distal region of the outer tube at a distal connection;
means for communicating the annular inflation lumen with the interior of the balloon to facilitate inflation and deflation of the balloon, the inflation lumen comprising the sole lumen in communication with the interior of the balloon; and
the outer tube being attached to the inner tube at a location between the means for communicating and the distal end region of the inner tube. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of manufacturing a coaxial balloon catheter, comprising the steps of:
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forming at least one aperture on an elongated outer body to serve as an inflation port;
inserting the elongated inner body coaxially within an elongated outer body;
attaching a distal end of a balloon adjacent to a distal region of the elongated outer body;
attaching the distal region of the elongated outer body to an outer portion of the elongated inner body; and
attaching a proximal end of the balloon on a portion of the elongated outer body, wherein the balloon covers the at least one aperture. - View Dependent Claims (18, 19, 20)
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Specification