Catheter-assisted proceduresare usually used for larger varicose veins. A thin tube (catheter) is inserted into an enlarged vein and heats the tip of the catheter. As the catheter is pulled out, the heat destroys the vein by causing it to collapse and seal shut. This minimally invasive surgery is usually done for larger varicose veins. Patients are able to go home the same day and resume activities within a day. Other catheter-assisted methods use a blade to destroy varicose veins or radio waves to close them.

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