DURHAM–Deep Blue Medical Advances, a startup developing a number of medical devices, has raised $295,000 in a debt round, according to a  filing with the U.S. Securities and Exchange Commission. The company secured $517,000 in debt funding in January.

The company was founded in 2014 by Duke plastic surgeon Howard Levinson, MD. It has been developing a novel hernia mesh product with enhanced anchoring strength. It addresses the unacceptably high rate of hernia occurrence and re-occurrence, according to the company.

Millions of hernia surgeries are done globally at billions in clinical costs and support a $1.1 billion hernia device market.

In separate efforts, Dr. Levinson is working on additional  projects including an anti-biofouling Foley catheter, a non-invasive light imaging technology to diagnose skin disorders, and tissue-engineered skin that resists contraction.