Retrieval Systems and Methods for Use Thereof

A method of securing an obstruction within a vessel, the method comprising:

• advancing a shaft having a retrieval device affixed thereto to the obstruction;
• advancing a protective device over the shaft, the protective device comprising a sheath having an eversible cover, where a fixed end of the eversible cover is affixed to a distal portion of the sheath and a free end of the eversible cover is located proximal to the fixed end;
• positioning the fixed end of the eversible cover adjacent to the retrieval device and expanding at least a portion of the eversible cover against a portion of a wall of the vessel;
• proximally translating the shaft and retrieval device with at least a portion of the obstruction affixed thereto such that resistance of the eversible cover against the vessel resists movement of the eversible cover causing the free section of the eversible cover to evert over the proximally translated retrieval device.

A method of securing an obstruction within a vessel of a patient, the method comprising:

• providing an interventional vascular device having a wire attached thereto, where the interventional vascular device is configured to remove the obstruction from the vessel;
• coupling a shaft to the wire of the interventional vascular device, the shaft having a distal portion and a proximal portion and a lumen extending therethrough and having a flexibility to navigate through tortuous anatomy, an eversible cover having a fixed section affixed near an end of the distal portion of the shaft, a free section extending in a proximal direction from the fixed section and a cover wall extending from the fixed section to the free section, where the eversible cover is expandable against a vessel wall, the eversible cover being axially compliant such that when the interventional vascular device retrieval device is positioned through the shaft lumen and moved in a proximal direction against the eversible cover, the friction of the eversible cover against the vessel wall causes the eversible cover to evert over the interventional vascular device allowing for the free section of the cover to be distal to the interventional vascular device;
• positioning the shaft and eversible cover over the wire of the interventional vascular device prior to insertion into the patient;
• and
• advancing the interventional vascular device, shaft and eversible cover into the vessel to the obstruction.