Medical capsule device
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United States of America Patent
Stats
-
Mar 27, 1984
Grant Date -
N/A
app pub date -
Mar 15, 1982
filing date -
Mar 23, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A medical capsule device includes a capsule body provided with a chamber inside and a communicating path for communicating the chamber with the outside, a movable member arranged in the chamber and movable between a liquid-pushing position at which the volume of the chamber is made smallest and a liquid-receiving position at which the volume of the chamber is made largest, a coiled operating member made of a shape memory alloy for selectively moving the movable member to the liquid-receiving or -pushing position according to temperature changes of the operating member itself, and a switching circuit and power supply source arranged in the capsule body and adjusting the temperature of the operating member to selectively move the movable member to the liquid-pushing or -receiving position.
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Family
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Cited Art Landscape
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