Naming difficulties may be rank ordered along a continuum. Items are rank ordered in terms of their ability to be named, which is correlated with their frequency. This type of picture-naming test is also useful in the examination of children with learning disabilities and the evaluation of brain-injured adults.
The Jarvik-7 heart was developed by American scientist Robert Jarvik and his mentor, Willem Kolff. In 1982, Seattle dentist Dr. Barney Clark was the first person implanted with the Jarvik-7, the first artificial heart intended to last a lifetime.
BiVacor. 1  The most miraculous of the bunch, the BiVacor artificial heart can replace the human heart outright. The BiVacor, much like the human heart itself, is simply a mechanism to pump blood through the body. As the company advertises on its website, it's âsmall enough for a child, powerful enough for an adult..