Apparatus and methods for renal stenting
First Claim
Patent Images
1. A balloon catheter comprising:
- a catheter having proximal and distal ends, including a dilatation balloon disposed on the distal end and coupled to an inflation port at the proximal end by an inflation lumen,the catheter comprising an array of discrete dissimilarly shaped radio-opaque markers permanently affixed at the distal end, each of the markers in the array disposed equidistant from the distal end and aligned about a predetermined circumference of the catheter to facilitate determination of placement and angularity of the catheter relative to an ostium, the array of radio-opaque markers having an elliptical pattern when the catheter is fluoroscopically imaged at a first angle oblique to a longitudinal axis of the catheter, and a linear pattern when the catheter is fluoroscopically imaged at a second angle in alignment with the longitudinal axis of the catheter.
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Abstract
The present invention provides and apparatus and methods for emboli removal and stenting within the renal arteries having a catheter system having a distal occlusion element, a stent deployment section, and an emboli removal lumen. The occlusion element is disposed at a predetermined distance from the stent deployment section specific for use in the renal artery, and is constructed to reduce the potential for perforation or jailing during stent deployment. The apparatus further includes an array of radio-opaque markers disposed on the stent delivery catheter to facilitate accurate stent deployment within a renal artery.
44 Citations
26 Claims
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1. A balloon catheter comprising:
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a catheter having proximal and distal ends, including a dilatation balloon disposed on the distal end and coupled to an inflation port at the proximal end by an inflation lumen, the catheter comprising an array of discrete dissimilarly shaped radio-opaque markers permanently affixed at the distal end, each of the markers in the array disposed equidistant from the distal end and aligned about a predetermined circumference of the catheter to facilitate determination of placement and angularity of the catheter relative to an ostium, the array of radio-opaque markers having an elliptical pattern when the catheter is fluoroscopically imaged at a first angle oblique to a longitudinal axis of the catheter, and a linear pattern when the catheter is fluoroscopically imaged at a second angle in alignment with the longitudinal axis of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24)
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13. Apparatus for treating a renal vessel in the vicinity of a renal ostium, the apparatus comprising:
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a catheter having proximal and distal ends, including a balloon disposed on the distal end and coupled to an inflation port at the proximal end by an inflation lumen, the catheter comprising an array of discrete dissimilarly shaped radio-opaque marker segments permanently affixed at the distal end, each of the marker segments in the array disposed equidistant from the distal end and aligned about a predetermined circumference of the catheter to facilitate determination of placement and angularity of the catheter relative to the renal ostium, the array of marker segments having an elliptical pattern when the catheter is fluoroscopically imaged at a first angle oblique to a longitudinal axis of the catheter, and a linear pattern when the catheter is fluoroscopically imaged at a second angle in alignment with the longitudinal axis of the catheter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 25, 26)
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Specification