| 摘要 |
A system used in a blood vessel when an interventional procedure is being performed in a stenosed or occluded region, which is capable of enabling a support device and filter supported thereon, to be inserted into the blood vessel and to cross the stenosis therein in a low profile without a sheath extending thereabout. The filter is adapted to filter the blood in the blood vessel. The system is further capable of enabling the support device and filter to be positioned distal to the interventional procedure site, and to be activated to expand at the distal location so as to enable the filter to capture any embolic material that may be created and released into the bloodstream during the interventional procedure. The system is also capable of enabling the support device and filter to be activated to contract to a return profile for enabling the filter to retain the embolic material captured therein and the removal of the support device and filter from the blood vessel. The system includes a filter, adapted to be deployed distal to the interventional procedure site, and to pass blood therethrough and capture embolic material which may be released into the blood in the blood vessel during the interventional procedure. A support device is adapted to support the filter, and to retain a low profile so as to enable the filter to be inserted into and cross the stenosis in the blood vessel, to a position distal to the interventional procedure site, without a sheath extending about the filter and the support device. The support device is further adapted to deform for expansion thereof into open position to enable the filter to capture embolic material, and to enable the collapsing thereof to retain the embolic material captured in the filter, and to enable removal of the support device and the filter. The system also includes a mechanism, connected to the support device, adapted to be activated so as to enable the support device to deform for expansion thereof.
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