The Team

Founders and Executive Team

web_IMG_2348Arnab Chakraborty, Chairman of the Board of Directors, Chief Development Officer, Founder.  Arnab graduated from the Biomedical Engineering program at Georgia Tech in December 2013.  Excelling through all his product design classes including senior design, he decided to take advantage of an opportunity to build a startup focused on medical devices in the spring of 2013.  Initially working on a device to occlude atrial septal defects, a cardiac birth defect, in children, he has since pivoted to working on the current project of occluding the left atrial appendage in patients with atrial fibrillation suffering from a major increase in their chance of stroke.  His accolades with the team at Flow MedTech include being the winner of the 2014 GT Ideas to Serve Advanced Track Competition, finalists of the GT Biomedical Engineering Outstanding Entrepreneurial Award, semifinalists of the GT Startup Competition, and 2012 and 2014 semifinalists of the GT InVenture Prize.  Arnab has served in leadership roles throughout his career at Georgia Tech, via his involvement with board positions in his fraternity as well as various group problem solving projects.

web_IMG_2330Christine Hang, Chief Executive Officer, Founder. Christine graduated from the Biomedical Engineering program at Georgia Tech in May 2013. She has significant experience in scientific research and was awarded the GT President’s Undergraduate Research Award. Her accolades with the team at Flow MedTech include being the winner of the 2014 GT Ideas to Serve Advanced Track Competition, finalists of the GT Biomedical Engineering Outstanding Entrepreneurial Award, semifinalists of the GT Startup Competition, and semifinalists of the GT InVenture Prize. Outside of company duties, she enjoys being involved in charity work, and her leadership has helped raised over $35,000 to veterans affairs, education, and cardiac care. She also enjoys playing classical piano.

Dr. Senthil Thambidorai, MD, FHRS, Vice President of Medical Affairs. Dr. Thambidorai is the Regional Director of Electrophysiology for HCA North Texas, cardiologist and cardiac electrophysiologist in Fort Worth, TX, and a part of the academic core faculty for the Internal Medicine Residency Program at the University of North Texas in Fort Worth, TX. Dr. Thambidorai is a member of the American College of Cardiology and American Heart Association. He is the author of more than 13 peer-reviewed articles and more than 25 scientific presentations at national and international forums.


Medical Advisory Board

Heather Bloom, MD.  Dr. Bloom is the Director of Electrophysiology services at the Atlanta VA medical center, and an assistant professor of Medicine at Emory University School of Medicine.  Dr Bloom is currently involved with several trials examining the correlation of oxidative stress with atrial and ventricular arrhythmias.  She is particularly interested in oxidative stress as a potential predictor of arrhythmic events, and as a potentially modifiable risk factor for targeting new therapies for atrial fibrillation and sudden cardiac death.  Dr. Bloom attends on the CCU and Consult services at the Atlanta VAMC.  In addition, she is always on service for in- and out-patient EP services, including arrhythmia management, electrophysiology studies and ablations, and device implantation and follow up.


Gautam Kumar, MD.  Dr. Kumar is an assistant professor of medicine and part of the Emory Healthcare Network. His area of clinical interest is interventional cardiology and his specialties include cardiology, interventional cardiology, and internal medicine.  Dr. Kumar completed his medical training at the National University of Singapore and his residency in Internal Medicine at the Mayo Clinic in 2007. In 2010 he completed his training in the Mayo Clinic’s cardiovascular disease training program.  He is a 2011 graduate of Emory Cardiology’s interventional cardiology training program.  Dr. Kumar is based primarily at the VA Medical Center.

Horst Sievert, MD, FESC, FACC, FSCA.  Dr. Sievert is a Professor of Medicine, Internal Medicine, Cardiology and Vascular Medicine of the CardioVascular Center Frankfurt,Sievert_Main Sankt Katharinen, and also serves as the Head of Department of Cardiology and Vascular Medicine, Sankt Katharinen Hospital, Frankfurt, Germany. He serves as Director of Structural Heart Interventions of Washington Hospital Center at Washington DC. He became Director of the Department of Interventional Cardiology and Angiology of the Heart Center in Rotenburg in 1990, Senior Consultant at the Bethanien Hospital in Frankfurt in 1993 and Director of the CardioVascular Center in Frankfurt, Sankt Katharinen, in 2003. Dr. Sievert was an Associate Professor of Internal Medicine/Cardiology at the University of Frankfurt.  He serves as Director of the CardioVascular Center in Frankfurt, Sankt Katharinen, the Department of Internal Medicine, Cardiology and Vascular Medicine of the Sankt Katharinen Hospital, Frankfurt, Germany.  He has personally performed more than 16,000 PCIs and 6,000 peripheral angioplasties. He has been the Principal Investigator of a number of clinical trials and has authored more than 130 manuscripts and 600 abstracts in peer reviewed journals, as well as 70 books and book contributions. He has also delivered more than 600 invited lectures around the world. He was the first to close the left atrial appendage percutaneously. After training in internal medicine, nephrology and intensive care medicine, he completed a fellowship in Cardiology and Vascular Medicine. Dr. Sievert received his medical degree at the University of Frankfurt, Germany.

W Robert TaylorRobert Taylor, MD, PhD.  Dr. Taylor received his Ph.D. from The Johns Hopkins University and his M.D. from Harvard Medical School.  He is the director of the division of cardiology at Emory University and a professor of Medicine and Biomedical Engineering at the Emory University School of Medicine.  Dr. Taylor’s laboratory is focused on obtaining a better understanding of the role of vascular inflammation in the pathogenesis of vascular disease.  His work employs novel animal models of human vascular disease to study the role of various mechanical and humoral factors in the development of hypertension and atherosclerosis.  He has a particular interest in the renin angiotensin system, advanced glycation endproducts, biomechanical forces and oxidative stress.  A significant effort is also underway to examine the interaction between vascular inflammation and bone marrow-derived endothelial progenitor cells. Dr. Taylor’s research program involves strong collaborative efforts with other members of the Department of Biomedical Engineering with a focus on applying enabling nanotechnology and imaging approaches to the general area of atherosclerosis.

 Industry Advisory Board

Jack GriffisJack Griffis.  Vice president of R&D at MedShape, Inc. He has significant experience in cardiovascular technology from previous startup work and C.R. Bard.  Jack’s experience includes cardiac surgical devices, endocrinology, interventional cardiology, interventional neuroradiology, interventional radiology, oncology, ophthalmic surgical devices, orthopedics and podiatry, pediatrics, urology, and vascular surgery.  In addition to that, his specialties include product development, product design, regulatory affairs, quality assurance, manufacturing / operations, business development, and strategic planning.

Tom Larkin.  EVP Commercialization and Adviser to CCB Research Group and Zorian Medical. He is also a founder of SPS Advisors, an organizationTom Larkin that advises growing healthcare companies in difficult environments.  The first half of Tom’s career had him immersed in the world of medicine, researching kidney dialysis and heart oxygenators, assisting on 150 open heart cases as a member of a heart bypass team, and selling a variety of medical devices and capital equipment in almost every area and to almost every key decision maker.  His career then continued at a wealth management firm that had served him for 7 years.  Tom was able to lead the firm to find solutions in developing deeper relationships with clients and to accelerate the firm’s growth, resulting in it becoming one of the top wealth management organizations in the country. While there, he played a critical role in their successful transition to a new CEO.  His next step was to join a real estate investment firm with whom he had been an investor for 15 years. Tom was able to be a leading force as they navigated rapid growth, economic, product and regulatory issues that came at an ever increasing pace–that firm became a market leader as well.

Mary Miles.  Mary is an advisor, mentor, and serial entrepreneur with more than 20 years of finance and accounting experience. Previously, she has held positions as controller, financial analyst, VP Finance and CFO at several firms including; Firearms Training Systems (FATS), Praxair, Zellweger Analytics and Spectris. Mary has been involved in several startups within different industries including; technology, e-commerce, and franchising. She also provides consulting services to startups & entrepreneurs in areas of strategic planning, company valuation, due diligence and turn-around advice.  Mary also serves as a mentor while teaching a Financial Literacy class at both the Advanced Technology Development Center (ATDC) at Georgia Tech and the Startup Chicks Accelerator Program.

Harold Solomon.  Serial entrepreneur involved with three exits and a principal at the Georgia Tech Venture Lab, where he helps launch technologyHarold startups from computing, biomedical, chemistry, and all areas of engineering.  Harold helps developing ideas with commercial application test the market acceptance and find a business model.  If that gate is passed, then Harold helps bring in grant funding to further remove technical and market adoption risk and finally form an entity and match a startup CEO, venture funding, and spin the entity out of Georgia Tech.

James Stubbs, PhD.  An experienced medical device entrepreneur, has worked in three venture-backed medical device companies, and a former principal at James StubbsGeorgia Tech VentureLab.  His experience has centered around taking medical device concepts and translating them into FDA-cleared, commercial medical devices. He has worked with three venture-backed medical device companies, in all stages of their life cycles: product concepts, VC-fundraising, R&D, design validation/verification, pre-clinical and clinical studies, FDA-clearance and commercial launch. Dr. Stubbs’ responsibilities have kept him very active in device patenting (37 patents & publications) as well scientific publishing (49 journal articles).