Catheter-directed thrombolysis is a procedure used to treat blood clots in large veins, such as those in the legs or lungs, by delivering clot-dissolving medications directly to the clot through a catheter. This method allows for more precise targeting of the clot and reduces the need for systemic anticoagulation.

Catheter-directed thrombolysis is effective in treating conditions like deep vein thrombosis (DVT) and pulmonary embolism, helping to restore normal circulation and prevent complications such as tissue damage or organ failure.