Stent delivery catheter
First Claim
Patent Images
1. A self-expanding stent delivery assembly comprising:
- a shaft having a distal region and a longitudinal axis;
a retractable sheath having a proximal end and a distal end, the retractable co-axially disposed around at least the shaft distal region;
a stent disposed co-axially between the shaft and the retractable sheath in the distal region; and
a tubular tapered tip affixed to the retractable sheath distal end, the tubular tapered tip having an elongate region predisposed to fracturing.
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Abstract
A self-expanding stent delivery assembly includes a shaft having a proximal end, a distal end, a distal region, a lumen, and a longitudinal axis. A retractable sheath having an outer surface, a proximal end and a distal end is co-axially disposed around the shaft distal region. A stent is disposed co-axially between the shaft and the retractable sheath. A tubular tapered tip is affixed to the retractable sheath distal end. The tubular tapered tip has an elongate region predisposed to fracturing. Methods of delivering a self-expanding stent are also described.
245 Citations
19 Claims
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1. A self-expanding stent delivery assembly comprising:
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a shaft having a distal region and a longitudinal axis;
a retractable sheath having a proximal end and a distal end, the retractable co-axially disposed around at least the shaft distal region;
a stent disposed co-axially between the shaft and the retractable sheath in the distal region; and
a tubular tapered tip affixed to the retractable sheath distal end, the tubular tapered tip having an elongate region predisposed to fracturing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of delivering a self-expanding stent comprising:
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placing a stent delivery device at a target site, the stent delivery device comprising;
a shaft having a distal region and a longitudinal axis;
a retractable sheath having a proximal end and a distal end, the retractable sheath co-axially disposed around the shaft distal region;
a stent disposed co-axially between the shaft and the retractable sheath in the distal region; and
a tubular tapered tip affixed to the retractable sheath distal end, the tubular tapered tip having an elongate region predisposed to fracturing;
deploying the stent at the target site by retracting the retractable sheath or advancing the stent and fracturing the elongate region predisposed to fracturing; and
removing the stent delivery device from the target site. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification