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Shares of Irvine-based medical device maker Endologix Inc. rose Thursday after the Food and Drug Administration approved its treatment for ballooning blood vessels.

Endologix’ shares were up 3% with a market value of $460 million in early afternoon New York trading.

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Regulators approved Endologix’ AFXT Endovascular AAA device for treating abdominal aortic aneurysms on Wednesday.

An abdominal aortic aneurysm is the weakening of the aorta’s wall that leads to a balloon-like enlargement that can rupture.

Endologix’ device delivers a stent that redirects blood flow away from the aneurysm, reducing pressure on it.

The company said the AFXT is its latest version of the product and has a mechanism that makes it easier for surgeons to put it inside the patient’s aorta.