US Patent 11969176 Aspiration medical device

Aspiration medical devices and methods for making and using aspiration medical devices are disclosed. An example aspiration medical device may include a catheter shaft having a distal end region and defining an inflow orifice adjacent to the distal end region. An aspiration member may be disposed within the catheter shaft. The aspiration member may have a plurality of axially-spaced fluid jets formed therein. A collar may be disposed over the aspiration member. The collar may have a jet support region disposed adjacent to at least one of the fluid jets and a wall support region disposed adjacent to a wall of the catheter shaft.