Catheter with rapid exchange and OTW operative modes
First Claim
Patent Images
1. An intravascular catheter comprising:
- a) An elongated shaft having proximal and distal ends, a first port in the distal end, a first lumen extending therein to the first port in the distal end and a second lumen extending therein to a location proximally spaced from the distal end, the shaft comprising;
i) an elongated proximal shaft section;
ii) a relatively short distal shaft section having means to perform an intravascular procedure in communication with a portion of the second lumen extending therein; and
iii) an intermediate, bendable, relatively longitudinally incompressible shaft section having a longitudinally extendable wall portion defining at least in part the first lumen with a second port therein and being sufficiently radially rigid to minimize kinking thereof upon bending of the intermediate shaft section and articulation of the distal shaft section with respect to the proximal shaft section which longitudinally expands the wall portion.
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Accused Products
Abstract
An intravascular catheter having a relatively long proximal shaft portion, a relatively short distal shaft section and a flexible intermediate shaft which allows the articulation of the distal and proximal shaft sections. The intermediate shaft section has a guidewire port in fluid communication with a guidewire receiving inner lumen which extends through the catheter shaft. In one presently preferred embodiment the portion of the intermediate shaft section through which the guidewire lumen extends is formed by a helical coil having an expanded portion which defines the guidewire port. The catheter allows both rapid exchange and over-the-wire modes of operation.
151 Citations
6 Claims
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1. An intravascular catheter comprising:
a) An elongated shaft having proximal and distal ends, a first port in the distal end, a first lumen extending therein to the first port in the distal end and a second lumen extending therein to a location proximally spaced from the distal end, the shaft comprising; i) an elongated proximal shaft section; ii) a relatively short distal shaft section having means to perform an intravascular procedure in communication with a portion of the second lumen extending therein; and iii) an intermediate, bendable, relatively longitudinally incompressible shaft section having a longitudinally extendable wall portion defining at least in part the first lumen with a second port therein and being sufficiently radially rigid to minimize kinking thereof upon bending of the intermediate shaft section and articulation of the distal shaft section with respect to the proximal shaft section which longitudinally expands the wall portion. - View Dependent Claims (2, 3, 4, 5)
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6. A balloon dilatation catheter which can be used in an over-the-wire or rapid exchange mode comprising:
a) an elongated shaft having proximal and distal ends, a guidewire port in the distal end, a guidewire receiving lumen extending therein to the guidewire port in the distal end and an inflation lumen extending therein to a location spaced proximally from the distal end, the shaft comprising i) a proximal shaft section; ii) a relatively short distal shaft section with a dilatation balloon having an interior in fluid communication with a portion of the inflation lumen extending therein; and iii) an intermediate, bendable, relatively longitudinally incompressible shaft section between the proximal shaft section and the distal shaft section having a longitudinally extendable wall portion defining at least in part a portion of the guidewire receiving lumen extending therein and a second port therein and which is sufficiently radially rigid to minimize kinking thereof upon bending of the intermediate shaft section and articulation of the distal shaft section with respect to the proximal shaft section.
Specification