The side lengths of a right triangle form a so-called Pythagorean triple. A triangle that is not a right triangle is sometimes called an oblique triangle. Special cases of the right triangle include the isosceles right triangle (middle figure) and 30-60-90 triangle (right figure).
The first pacemaker was implanted on 8th October 1958 in a 43 year old man called Arne Larsson with complete heart block and Stokes-Adams attacks. Technological innovations between 1973 and 1980 rendered obsolete the reliable pacemaker of 1970.
Inventor with heart: Wilson Greatbatch, posing in his Newstead workshop in 1997, invented the first implantable pacemaker in 1958. Wilson Greatbatch, who saved countless lives with his invention of the implantable cardiac pacemaker, has died at the age of 92.A family spokesman confirmed that Mr Greatbatch died yesterday at the Oxford Village assisted living centre in Canterbury Woods, a suburb of Buffalo, New York state.ilson Greatbatch, who saved countless lives with his invention of the implantable cardiac pacemaker, has died at the age of 92. A family spokesman confirmed that Mr Greatbatch died yesterday at the Oxford Village assisted living centre in Canterbury Woods, a suburb of Buffalo, New York state.