High pressure protection for jet aspiration catheter

A thrombectomy catheter, comprising:

• a catheter body extending from a proximal end region to a distal end region and including an inner surface defining a catheter lumen extending between the proximal end region and the distal end region;
• a metallic high-pressure fluid supply tube extending through the catheter lumen from the catheter body proximal end region toward the catheter body distal end region, the high-pressure fluid supply tube configured for communication with a fluid source near the catheter body proximal end region;
• a reinforcement member disposed within the catheter lumen, the reinforcement member comprising a metallic tubular body welded to the high-pressure fluid supply tube and positioned within the catheter lumen;
• and
• a jet orifice extending through a sidewall of the high-pressure fluid supply tube, wherein the jet orifice is configured to expel a fluid jet from the high-pressure fluid supply tube to impinge directly against the tubular body within the catheter lumen.