punctuation and correct verb

Doctors usually perform this procedure while you are under local anesthesia. First, they make an incision in your arm or groin. Then they insert a catheter with a tiny inflatable balloon on the end into your artery. Using X-ray, video, and special dyes, your doctor guides the catheter up into the blocked coronary artery. Once it’s in position, the balloon is inflated to widen the artery. The fatty deposits, or plaque, get pushed against the wall of the artery. This clears the way for blood flow.

1. Are the commas in bold needed?

2. Should it be "gets" instead?

Thanks.