Self sealing subcutaneous infusion and withdrawal device
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United States of America Patent
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-
Feb 7, 1989
Grant Date -
N/A
app pub date -
Jun 17, 1986
filing date -
Jun 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The self-sealing subcutaneous infusion and withdrawal device or septum includes a cup-shaped needle stop member that defines a fluid chamber having a fluid transfer opening. A jacket envelops the needle stop member and includes an integrally formed delivery tube that aligns with the fluid transfer opening in the needle stop member. The fluid chamber of the needle stop member is sealed by a needle penetrable sealing member that is forced against a wall of the needle stop member by a clamping member to provide a mechanical leak-tight seal. The seal member has opposite convex surfaces which cooperate with the clamping member to impose a compression force upon a needle that penetrates the seal member during the fluid infusion and fluid withdrawal processes.
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