Leadership in health care private equity since 1986

Medical Devices

Medical devices have been a consistent focus area for Tullis since its founding, with successful investments and exits for companies such as Atritech (interventional cardiology) and Adiana (women’s health). We concentrate on identifying novel technologies with large target markets, led by experienced management teams.




The WATCHMAN Left Atrial Appendage Closure Device.  Atritech developed a new device to prevent stroke and heart attack in patients with atrial fibrillation (“AF”). The product, Watchman, was the first in a new category of devices, designed to close off the left atrial appendage, in which clots typically form in AF patients. Following several years of clinical trials, the WATCHMAN achieved regulatory approval in markets around the world including the US. Atritech was acquired by Boston Scientific for cash and future milestones and royalties.