Importance

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Abstract

A system used in a blood vessel when an interventional procedure is being performed in a stenosed or occluded region, which is capable of treating an entire affected area in a blood vessel while preventing adverse effects for healthy tissue. The system includes a catheter which is positionable in a blood vessel at the interventional procedure site. The system further includes an expandable interventional instrument such as an expandable stent which is expandable and which may be deployed in the blood vessel at the interventional procedure site, which includes an unexpanded axial dimension. The system also includes an expandable member such as an expandable balloon, for expanding the expandable stent. The expandable balloon is capable of expanding so as to expand and deploy the expandable stent, and to substantially retain the unexpanded axial dimension of the expandable stent. The expansion of the expandable balloon prevents lengthening or shortening of the expandable stent, so as to enable the entire affected lesion area to be covered precisely without affecting the surrounding healthy tissue upon deployment of the expandable stent.

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First Claim