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Individuals Interviewed

Anthony J. AdducciAnthony J. Adducci
Joined the staff at Medtronic in the 1960s. In the early 1970s, he helped found Cardiac Pacemakers, Inc.
Kurt AmplatzKurt Amplatz
Developed medical devices for use in neuroradiology, uroradiology, and cardiac radiology. Started two medical device companies, Kamca and AGA.
Earl E. BakkenEarl E. Bakken
Started Medtronic and has developed many medical devices including the first battery operated pacemaker and the first implantable pacemaker. Founded the Bakken Library and Museum.
Perry L. Blackshear, Jr.Perry L. Blackshear, Jr.
Professor Emeritus at a Minnesota university. As a mechanical engineer, he researched medical applications in field of fluid mechanics.
Norman DannNorman Dann
As an entrepreneur, Dann has headed his own medical device design and servicing companies, one of which, the Dann Company, was acquired by Medtronic.
Richard DeWallRichard DeWall
Developed the bubble oxygenator, a temperature controlled oxygenator, and a capillary type oxygenator. Also helped to found a medical school and heart surgery program at an Ohio university.
Sandra HollenhorstSandra Hollenhorst
Spent part of her career as an equity researcher in the investment industry. Involved with Minnesota Emerging Medical Organizations (MEMO).
Thomas E. HolloranThomas E. Holloran
Served as Medtronic’s legal representative, a board member, and as a company executive. He now teaches at a Minnesota university.
C. Walton LilleheiC. Walton Lillehei
Performed the first successful open-heart surgery. Served as a researcher and professor at the University of Minnesota Medical School and was the Medical Director of St. Jude Medical’s Heart Valve Division.
Ronald A. MatricariaRonald A. Matricaria
Served as an executive and board member at Eli Lilly, Cardiac Pacemakers, Inc. and St. Jude Medical.
Patricia NeumanPatricia Neuman
Has worked primarily in public relations and marketing. She developed the “Minnesota, Great State of Health” campaign.
Demetre M. NicoloffDemetre M. Nicoloff
Researcher who was involved in the development of the first bi-leaflet all carbon heart valve, now known as the St. Jude valve.
Gerald TimmGerald Timm
Developed many medical devices for urological disorders and has started several companies. Has worked as a researcher and professor at a Minnesota university.
Manuel VillafañaManuel Villafaña
A former sales manager for Medtronic, Villafaña went on to start several medical device companies.
Winston R. WallinWinston R. Wallin
Board member and a former chief executive of Medtronic.
George WatersGeorge Waters
Has headed several companies that designed and manufactured medical devices, including Waters Instruments
Organizations Represented
Businesses Trade Associations Educational Institution

Video Interview
Dr. C. Walton Lillehei describes his first meeting with Medtronic founder Earl Bakken.