Septum with a needle stop at the fluid transfer port

Details Septum with a needle stop at the fluid transfer port Septum with a needle stop at the fluid transfer port

1988-10-21

1990-02-27

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604117, 604148, 604175, A61M 1100

Patent

active

049042416

ABSTRACT:
The septum includes a fill chamber having a port that is reinforced or otherwise protected by a needle stop structure. The needle stop structure prevents a needle that has accessed the fill chamber from penetrating the fluid flow structure that extends from the fill chamber. In one embodiment of the invention, the needle stop structure overhangs the port thereby preventing a needle from entering the port. In a further embodiment of the invention the needle stop structure includes a nozzle-like annular collar which extends from the port into the fill chamber. In another embodiment of the invention, the needle stop structure includes a nozzle-like annular collar that extends from the port into the fluid flow structure. In yet another embodiment of the invention, the needle stop structure includes a cup-shaped structure that extends from the port into the fluid flow structure and has an opening in the fluid flow structure. In still another embodiment of the invention, the needle stop structure includes a conduit that extends from the port across the fill chamber. In all embodiments of the invention the needle stop structure is impermeable to penetrations by a needle and thus protects the fluid transfer structure from penetrations by a needle.

REFERENCES:
patent: 3310051 (1967-03-01), Schulte
patent: 4190048 (1980-02-01), Sampson
patent: 4344435 (1982-08-01), Aubin
patent: 4364395 (1982-12-01), Redmond et al.
patent: 4525165 (1985-06-01), Fischell
patent: 4543088 (1985-09-01), Bootman et al.
patent: 4544371 (1985-10-01), Dormandy, Jr. et al.
patent: 4559033 (1985-12-01), Stephen et al.
patent: 4588394 (1986-05-01), Schulte et al.
patent: 4634427 (1987-01-01), Hannula et al.
patent: 4710174 (1987-12-01), Moden et al.
patent: 4784646 (1988-11-01), Feingold

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