One of the indicators of metabolic demand that has been used for controlling the rate of pacemakers is central venous blood temperature (CVT).
In 1983, Bill Cook and Dr. Neal Fearnot began to work under the Cook Pacemaker Company on developing the technology developed by Dr. Fearnot at Purdue University into an improved prototype for a temperature-based exercise responsive pacemaker that was released in 1988 as the Kelvin Sensor rate-responsive pacemaker. One of the first CVT rate-adaptive pacemakers was the Cook Model Kelvin 500 series.
Another one of the first CVT rate-adaptive pacemakers was the Intermedics Nova MR, which differs from the Kelvin 500 series in that its pacing algorithm had a more dynamic HR response. Continue reading
CCC is one of the oldest pacemaker manufacturers in the world. It was founded in 1969 by Dr. Orestes Fiandra, who performed the first succesful, human, long-term pacemaker implant in the world.
Dr. Fischell received his BSME degree from Duke University and MS and Sc.D. degrees from the University of Maryland. Dr. Fischell was employed at the Johns Hopkins University where he was the Chief Engineer of the Space Department and worked on more than 50 spacecraft. His interests at Johns Hopkins then turned to the invention of new medical devices such as pacemakers and implantable heart defibrillators. Starting in 1969, Dr. Fischell began the formation of 14 private companies that licensed his patents on medical devices. These companies include Pacesetter Systems, Inc. (now called St. Jude Medical), IsoStent, Inc., NeuroPace, Inc., Neuralieve, Inc., Angel Medical Systems, Inc, and Svelte Medical Systems, Inc. Dr. Fischell is a prolific inventor with over 200 issued U.S. and foreign patents, many of which have been the basis for new medical device companies. 