Capsule for medical use
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United States of America Patent
Stats
-
Dec 16, 1980
Grant Date -
N/A
app pub date -
Oct 13, 1977
filing date -
Oct 19, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A capsule for discharging drugs into a live body or collecting samples from the body comprises an external cylinder having slidably mounted therein an internal cylinder. The internal cylinder is retained by a meltable thread at one end of the external cylinder against the biasing force of a compression spring and upon melting of the thread, the spring effects sliding of the internal cylinder to the other end of the external cylinder and during this sliding movement, a drug is pushed out of the external cylinder ahead of the moving internal cylinder or a body sample is withdrawn into the external cylinder behind the moving internal cylinder. An electric circuit including a tunable receiver responds to an externally transmitted electric signal to energize a heater for melting the thread to thereby effect sliding movement of the internal cylinder at the desired time.
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