Fluid recirculation system for intravascular lithotripsy device

Abstract

A catheter system for treating a vascular lesion within or adjacent to the vessel wall or heart valve includes a balloon and a fluid circulator. The balloon includes a balloon wall that defines a balloon interior. The balloon is configured to retain a catheter fluid within the balloon interior. The fluid circulator is coupled in fluid communication to the balloon interior. The fluid circulator is configured to selectively circulate the catheter fluid out of and back into the balloon interior during use of the catheter system. The fluid circulator is configured so that a temperature of the catheter fluid within the balloon interior is maintained within a predetermined temperature range. Additionally, the fluid circulator can be configured so that a pressure of the catheter fluid within the balloon interior is maintained within a predetermined pressure range. Further, a filtration system can be coupled in fluid communication with the fluid circulator to remove microparticles from the catheter fluid.

Dependencies are inferred from the claim text.