About Us


Company Overview

ROX® Medical has developed an implantable device and therapy intended to treat uncontrolled high blood pressure. Blood pressure reduction is achieved by diverting a small amount of blood flow from the arterial system into the venous system.

The ROX Coupler is a small stent-like device that is placed between the artery and vein located in the upper thigh. The Coupler is about the size of a dime and is easily placed using standard catheter techniques.

ROX Medical is conducting the CONTROL HTN-2 clinical trial in the United States for hypertension (visit controlbp.com for more information). The ROX Medical Coupler is commercially available in Europe under CE mark.


Management Team

Mike MacKinnon, Chief Executive Officer

Mike MacKinnon joins ROX from Philips North America where he was Head of Sales for Image Guided Technologies, Devices. He joined Philips through the acquisition of Volcano where he was General Manager of Phoenix Atherectomy and Peripheral Sales Leader. In 2014 Volcano acquired AtheroMed, where Mike was President and CEO. Prior to AtheroMed, Mr. MacKinnon held various leadership positions with Hansen Medical, Access Closure and FoxHollow Technologies. Mike earned his BS in marketing and Legal Studies from University of Massachusetts at Lowell.

Rodney Brenneman, Founder & Chief Technology Officer

Rodney Brenneman has 24 years of experience in the medical device industry. He co-founded ROX Medical in 2004. Prior to ROX Medical Mr. Brenneman worked for USGI Medical as Vice President of R&D. At USGI he led a team of nine engineers and technicians to develop devices for endo-luminal GI surgery. Mr. Brenneman co-founded TheraCardia in 1998 and served as VP of R&D and Operations until 2003. Prior to 1998, Mr. Brenneman worked for Vesica Medical, acquired by Boston Scientific, Corp in 1996 and Advanced Surgical Intervention acquired by Boston Scientific, Corp in 1993. Mr. Brenneman has also done considerable consulting for very early stage medical device companies in a wide variety of specialties including Cardiology, Orthopedics, Urology, Opthamology, Neurology and Interventional Radiology.

Jonathan Sackner-Bernstein, MD, Chief Medical Officer and Executive VP of Clinical and Regulatory Affairs

Jonathan Sackner-Bernstein is the Chief Medical Officer and Executive Vice President of Clinical and Regulatory Affairs. Dr. Sackner-Bernstein’s expertise in medical product development leverages his broad and deep experience as cardiologist, clinical investigator, regulator and product development. He has consulted for a wide range of biotechnology and medical device companies, as well as serving as Associate Center Director in the Center for Devices and Radiological Health at FDA. Previously Dr. Sackner-Bernstein led the clinical and regulatory groups for NeoStem, which included financial, regulatory, clinical and operational oversight of a 61-site Phase II trial of stem cell therapy.

Michael McCully, VP of Market Development and Training

Michael brings over 17 years of experience in the medical device industry, having held various roles in early stage companies including sales, sales management, clinical affairs, and professional education and training. His prior companies include Cytyc (acquired by Hologic), Foxhollow (acquired by EV3), Access Closure (acquired by Cardinal Health), Cardiovascular Systems, and TVA Medical (acquired by Becton Dickinson). Prior to starting his career in the medical device industry Michael was an officer in the US Army.

Peter Balmforth, VP, EU Therapy Development Training and Education

Peter Balmforth is the Director of Therapy Development, Education and Sales for Europe. Bringing 10 years of medical device experience,  Peter joined ROX Medical in 2010 to lead the European market. Prior to ROX, he was Country Manager for both Atritech and Ablation Frontiers, both exited in successful mergers with BSX and Medtronic. Previously he served as Territory Manager for Endocardial Solutions, Inc., and post acquisition by St. Jude Medical, he continued his service as Product Manager.

Chris Yelley, Director of Operations

Chris Yelley is the Director of Operations for ROX Medical. With over 30 years of experience in the medical device industry Chris joined ROX Medical in 2008 to lead the manufacturing and operations efforts. Prior to joining ROX Medical Chris was with ev3 Neurovascular where he led the Process Development team. From 2000 through 2005 Chris served as Vice President of Operations with IntraLuminal Therapeutics in Carlsbad, CA. He has lead operations, quality, engineering and manufacturing teams both nationally and internationally, developing lean and efficient processes and programs for, MRI Interventions, Intravascular Research Limited and Advanced Cardiovascular Systems (Guidant).

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