Medical device maker Avinger raises $33 million in venture funding

Avinger Inc., which makes catheters to help treat peripheral artery disease, has raised $33 million in Series D venture funding, officials at the Redwood City company said Tuesday.

Unidentified prior investors kicked in more than $11 million, according to the company. It said PAD affects between 8 million and 12 million adults nationwide, and results in more than 150,000 leg amputations annually, citing U.S. Census data.