ANDOVER, MA, TransMedics, an Andover-based medical device company, has raised $5.9 million in venture capital, according to a new filing by the company with the Securities and Exchange Commission.

TransMedics is a medical device company founded in 1998 to address the unmet need for better, more effective organ transplant technologies. The Company has developed the first commercial, portable warm blood perfusion system that allows for a new type of organ transplant, called a living organ transplant.

This technology, called an Organ Care System, or OCS, is designed to maintain organs in a warm, functioning state outside of the body during transport from organ donor to recipient. The OCS could potentially increase organ availability and improve outcomes for the growing population of patients with end stage organ failure in need of a transplant, bridging the widening gap between the number of organs available and the number of recipients awaiting transplants.