Systems and methods for restoring blood vessel patency

A method comprising:

• providing a treatment system comprising:
• a delivery catheter assembly comprising:
• a tubular member defining a lumen and a distal opening and configured to be positioned intravascularly at or adjacent a treatment site;
• and
• an expandable member coupled to an outer surface of the tubular member, the expandable member configured to be expanded into apposition with a wall of a vessel at the treatment site to increase patency of the vessel at the treatment site;
• and
• a thrombectomy assembly comprising:
• a core member disposed within the tubular member lumen, wherein the core member and tubular member are configured to slide relative to each other;
• and
• a thrombectomy device coupled to a distal end portion of the core member,
• wherein the thrombectomy assembly is configured to be slidably transitioned between a delivery configuration in which the distal end portion of the core member and the thrombectomy device are positioned within the lumen of the tubular member, and a deployed configuration in which the distal end portion of the core member and the thrombectomy device are positioned outside of the lumen of the tubular member;
• expanding the thrombectomy device at the treatment site within the vessel at the treatment site;
• after expanding the thrombectomy device, moving the thrombectomy device to a collapsed configuration within the tubular member lumen while the tubular member is disposed within the vessel, thereby positioning the expandable member carried by the tubular member at the treatment site;
• and
• after moving the thrombectomy device to within the tubular member lumen, expanding the expandable member carried by the tubular member into apposition with the vessel wall at the treatment site, thereby increasing patency of the vessel at the treatment site.

A method comprising:

• expanding a mechanical thrombectomy device at a treatment site within a blood vessel;
• after expanding the mechanical thrombectomy device, moving the mechanical thrombectomy device to a collapsed configuration within a lumen of a catheter disposed within the blood vessel;
• and
• after moving the mechanical thrombectomy device to within the catheter lumen and while the mechanical thrombectomy device remains within the catheter lumen, expanding an expandable device coupled to an outer surface of the catheter into apposition with a wall of the blood vessel at the treatment site, thereby increasing patency of the blood vessel at the treatment site.