A new type of surgery is helping patients with sinusitis, an inflammation inside the sinuses that can cause headaches and make it hard to breathe. In traditional sinus surgery, doctors use a shaver to remove tissue, a technique that can cause pain and scarring. But now, using CT scans as a guide, surgeons can insert a tiny plastic tube --- called a micro-flow spacer --- in the sinus. It's filled with medicine that's released over a two week period, reducing the swelling inside the sinus. Micro-flow spacers are new on the market --- right now, only 40 doctors in the U.S. are using the new surgical technique.