Word: instrument
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Dates: during 1960-1969
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Some surgery is very dangerous if certain anatomic formations exist in a diseased heart, he said. The direct view of the heart, available through the fiber optics instrument, gives vital information without risking dangerous surgery...
...instrument is inserted into the blood vessels through the neck or leg. Light inside the heart and vessels is provided from a high intensity mercury are lamp and carried on down a second fiber optic system to the lenses...
After the instrument has been inserted, a balloon attached to the inserted end is inflated, pushing blood away from the heart walls. An 8 mm. camera films the heart and its motion, and enlarges the image 21 times...
...heart has been visualized without surgery once before by the use of a rigid stainless steel rod also introduced through the blood vessels. But the rigidity of this instrument made it difficult to manipulate. It was unable to pass through the variety of valves, blood vessels and chambers that the flexible fiber optics system can, Dr. Gamble said...
...instrument has only been tried on animals, Dr. Gamble said. None of them have been harmed, but he will continue testing. "I have to have a system that will do more good than harm to patients before I try it on them. I have to have a system that really works," he said...