Abstract: The invention provides bioactive compositions and methods of delivery for ameliorating a vascular diseased state, particularly for the management of stenosis or restenosis following a vascular trauma or disease.

Abstract: An apparatus having multiple filters for capturing embolic material released from a lesion in an occluded body vessel being treated with an interventional procedure. The filters are placed downstream from the lesion, and the porosity of the filters decreases for each succeeding filter downstream from the lesion. Before encountering the filters, the embolic material passes a unidirectional barrier acting as a one-way valve to prevent backflow. The unidirectional barrier and filters are positioned along a plurality of arms. The arms may be fabricated from a memory metal, and the memory position of the plurality of arms is a collapsed position surrounding a common longitudinal axis. The apparatus includes an expansion member, such as a balloon, which inflates to move the plurality of arms radially outward to deploy the filters. Embolic material passes through the unidirectional barrier and is trapped between the layers of filters.

Abstract: The invention provides bioactive compositions and methods of delivery for ameliorating a vascular diseased state, particularly for the management of stenosis or restenosis following a vascular trauma or disease.

Abstract: An apparatus having multiple filters for capturing embolic material released from a lesion in an occluded body vessel being treated with an interventional procedure. The filters are placed downstream from the lesion, and the porosity of the filters decreases for each succeeding filter downstream from the lesion. Before encountering the filters, the embolic material passes a unidirectional barrier acting as a one-way valve to prevent backflow. The unidirectional barrier and filters are positioned along a plurality of arms. The arms may be fabricated from a memory metal, and the memory position of the plurality of arms is a collapsed position surrounding a common longitudinal axis. The apparatus includes an expansion member, such as a balloon, which inflates to move the plurality of arms radially outward to deploy the filters. Embolic material passes through the unidirectional barrier and is trapped between the layers of filters.

Abstract: A catheter system for removably securing a stent which generally includes an inner tubular member and an outer tubular member with an expandable member disposed about the inner tubular member. A foamed cover is disposed between the expandable member and the inner tubular member. An expandable stent is crimped onto the expandable member and is retained in place by compressing the foamed cover. Used with a stent delivery system, the catheter system is inserted into a body lumen such as an artery. The stent is secured in place while advancing the system through tortuous body lumen passages. The stent is advanced to the desired location in the body lumen and implanted by inflating the expandable member and thereby expanding the stent into the body lumen. The stent is released from the system by deflating the expandable member and withdrawing the catheter system from the body.