| 摘要 |
An improved stent delivery system which provides a covered stent as a sec tion of a deployment balloon is disclosed. The invention satisfies the need for a highly deliverable stent system with maximum flexibility, reduced prof ile, and consistent, smooth shaping along its length. The stent system descr ibed further minimizes damage to a drug-eluting coating and promotes uniform expansion of the stent during deployment. The invention provides a stent de livery system wherein a stent has a substantially impermeable cover in which the cover is detachably associated with a catheter shaft. The cover and the stent detach from the catheter shaft upon expansion of the stent to a desir ed diameter. In one embodiment, detachment is achieved automatically. In ano ther embodiment, detachment is manual.
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