Variable shape guide apparatus
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United States of America Patent
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-
Oct 8, 1991
Issued Date -
N/A
app pub date -
Dec 8, 1989
filing date -
Oct 31, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A maneuverable distal apparatus includes a temperature-activated memory element moving in a first direction to assume a predetermined shape when heated to a predetermined temperature and control means for selectively heating the memory element so that the memory element is moved in the first direction. A spring is provided for yieldably urging the memory element in a second direction away from the first direction upon cooling of the memory element to a temperature less than the predetermined temperature so that the memory element is moved to assume a shape other than the predetermined shape.
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