Linear actuator and a medical delivery device comprising such linear actuator
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United States of America Patent
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-
Sep 7, 2004
Grant Date -
Jan 1, 2004
app pub date -
Jan 22, 2003
filing date -
Jan 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A linear actuator comprising a first member (1) and a second member (2) provided with internal threads (6,8) cut in opposite directions and an intermediary member (3) engaged with and being axially displaceable in relation to the first and second members (1,2), via external threads (11,12) that are complementary to the threads (6,8) provided on the first and second members (1,2). The linear actuator furthermore comprises a sheath (4) stretching across the intermediary member (3), which sheath (4) is inrotatably, but longitudinally slidably arranged in relation to the first and second members (1,2). The linear actuator also comprises a driving rod (5) that is inrotatably, but longitudinally slidably arranged within the intermediary member (3). A medical delivery device provided with such a linear actuator is also provided.
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