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Browse VivaQuant patents and IP related to Rhythm Express


VivaQuant is located in the heart of the Minneapolis/St. Paul area, which boasts one of the highest concentrations of med tech firms in the world. The Twin Cities provide an excellent growth environment as a result of a well-developed infrastructure and educated work force. Medtronic, Boston Scientific, St. Jude Medical, Greatbatch Medical, Starkey, and 3M Medical Products have major facilities or are headquartered here.


VivaQuant was founded in 2009 by Marina Brockway, PhD after experiencing her Mother’s difficulty and frustration with a prescribed ambulatory monitoring device and recognizing the need for better arrhythmia detection accuracy and ECG clarity.

Core Values

  • Innovate
  • Create reliable and easy-to-use products

  • Treat customers and employees fairly – earn their respect and trust

  • Provide products and technology that make a difference


Our team has extensive experience in the design, manufacturing and marketing of biomedical research products, medical devices and ambulatory diagnostics and monitoring solutions. Specific technology expertise includes signal processing, ultra-low-power embedded systems, sensors, low-power mixed signal design and RF telemetry.

Brian Brockway, MSEE
Brian Brockway, MSEEPresident and CEO
Brian is CEO and President. He is a collaborative leader and team builder with strong values and work ethic based upon Minnesota roots. He has led firms ranging from start-ups to 250 employees and has a proven ability to work with a team to find creative solutions to capitalize on opportunities and solve problems with efficient use of capital. Prior to VivaQuant, he founded Data Sciences Intl and bootstrapped into the leading provider of research tools for evaluating the safety and efficacy of pharmaceuticals and medical devices with distribution in 35 countries. Received SBA exporter of the year, Tibbetts Award for innovation, and named three times to the Inc. 500. Sold to Harvard Apparatus for $70 M. He also co-founded Transoma Medical, a venture-backed startup engaged in implantable cardiac monitors. Transoma received FDA clearance on two products and the Company was subsequently sold to Wilson Greatbatch. Brian holds 51 issued and 10 pending patents and is author of 25 peer-reviewed publications in scientific, engineering, and medical journals.
Brian Brockway, MSEE
Marina Brockway, PhD, MBAFounder and Chief Technology Officer
Marina is founder and Chief Technology Officer of VivaQuant. She is a high-energy collaborative and hands-on leader with a unique combination of education and experience in artificial intelligence, signal processing, embedded systems, cloud computing, cardiovascular physiology, statistics, intellectual property strategy, and digital health IT and medical device development and commercialization. She is an invited speaker and expert in the development of algorithms for ultra-low-power implementation of embedded systems. Prior to founding VivaQuant, Marina spent several years in the cardiac rhythm management and neurostimulation divisions of Guidant (currently Boston Scientific). She has about 80 issued and 10 pending patents in the fields of signal processing and systems for monitoring ambulatory subjects and for management of patients with chronic cardiovascular disease. She has co-authored seven peer-reviewed scientific publications in engineering, signal processing, and medicine. Marina holds a PhD in applied mathematics, a Master’s degree in physiology, and an MBA.
Brian Brockway, MSEE
John Collins, MBAMarketing Director
JC is Director of Marketing for the Rhythm Express product line. He brings 24 years of experience in medical devices, including 18 years at Medtronic, to VivaQuant’s Remote Cardiac Monitoring Systems business. John has held product management, team management, technical support, marketing, and international marketing roles at Medtronic and Transoma Medical. As a product manager, he teamed with the sales force to successfully launch more than 15 products in the Medtronic AF, Cardiac Surgery and Cardiac Rhythm Management divisions. While at Medtronic, he managed global product lines including RF ablation and diagnostic catheters, capital equipment, and delivery systems. He developed several product promotions and training modules for field sales teams and customers. He has close relationships with numerous electrophysiologists and cardiologists in the Midwest, across the nation and overseas. John holds an MBA from the University of St. Thomas.