Self sealing subcutaneous infusion and withdrawal device

Details Self sealing subcutaneous infusion and withdrawal device Self sealing subcutaneous infusion and withdrawal device

1986-06-17

1989-02-07

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604132, 604175, A61M 1100

Patent

active

048028851

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.

REFERENCES:
patent: 4193397 (1980-03-01), Tucker et al.
patent: 4400169 (1983-08-01), Stephen
patent: 4543088 (1988-09-01), Bootman et al.
patent: 4626244 (1986-12-01), Reinicke
patent: 4655765 (1987-04-01), Swift

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