Christopher Richardson

Keystone Heart Ltd. engages in the development and manufacture of cerebral embolic protection devices that aim to reduce the risk of stroke, neurocognitive decline, and dementia caused by brain damage associated with cardiovascular procedures. The company was founded by Dov V. Shimon in 2004 and is headquartered in Caesarea, Israel.

Direct Flow Medical, Inc. develops transcatheter heart valve technologies. It explores application of its technology beyond the aortic valve, to the mitral valve, and other valve anatomy. The firm’s Transcatheter Aortic Valve System is indicated for the treatment of patients with severe aortic stenosis, who are at risk for surgical aortic valve replacement. The company's system incorporates a polymer frame, which is expanded using pressurized saline and contrast for placement, assessment and repositioning. Direct Flow Medical was founded by Gordon B. Bishop and Randall T. Lashinski in June 2004 and is headquartered in Santa Rosa, CA.