Bi-directional, anti-reflux vascular access system

Details Bi-directional, anti-reflux vascular access system Bi-directional, anti-reflux vascular access system

1982-04-12

1987-11-10

Truluck, Dalton L.

Surgery

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

Material introduced into and removed from body through...

604175, 604256, 604283, A61M 2500

Patent

active

047055014

ABSTRACT:
An implantable access system for infusion of liquids into a body or aspiration of liquid samples from the body. The system includes a septum/manifold (16) and catheter (10) connected thereto, both of specific design. The septum/manifold includes a pair of manifold chambers (24, 25) each closed with a self-sealing septum (20, 22) and each having a first access entry (19) and second access entry (26, 27) (35, 36). The catheter includes a pair of concentric inner and outer tubes (11, 12). The inner tube (11) is collapsible and closed at its distal end. The outer tube (12) closely engages the inner tube and defines a catheter lumen (28) therewith when the inner tube is collapsed by evacuation. The inner and outer tubes are joined together longitudinally over a small portion of the circumference of the inner tube.

REFERENCES:
patent: 3331371 (1967-07-01), Rocchi et al.
patent: 3552441 (1971-01-01), Luhleich
patent: 3730170 (1973-05-01), Michael
patent: 4160454 (1979-07-01), Foux
patent: 4240433 (1980-12-01), Bordow
patent: 4248234 (1981-02-01), Assenza et al.
patent: 4301797 (1981-11-01), Pollack

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