Catheter convertible from single to multilumen

Details Catheter convertible from single to multilumen Catheter convertible from single to multilumen

1991-01-10

1992-09-22

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604 93, 604264, 604283, A61M 2500

Patent

active

051493306

ABSTRACT:
A catheter capable of being converted from a single lumen catheter into a multilumen catheter. The catheter of the present invention comprises a first large bore catheter tube and a second catheter tube having at least one lumen and an outer diameter which is smaller than the inner diameter of the first catheter tube and which is capable of being disposed within the first catheter tube. When the second catheter tube is disposed within the first catheter tube, the second catheter tube abuts a portion of the inner wall of the first catheter tube to form a single lumen between the inner wall of the first catheter tube and the outer wall of second catheter tube. The first catheter tube has a first connector portion at its proximal end which is mateable with a second connector portion at the proximal end of the second catheter tube. The connector portions are mateable in fluid tight relationship and are operative to maintain the first and second catheter tubes in nested relationship to each other and provide multiple lumens.

REFERENCES:
patent: 3771527 (1973-11-01), Ruisi
patent: 3863632 (1975-02-01), Schwartz
patent: 4202332 (1980-05-01), Tersteegen et al.
patent: 4318402 (1982-03-01), Vaillancourt
patent: 4710181 (1987-12-01), Fuqua
patent: 4819664 (1989-04-01), Nazari
patent: 4850373 (1989-07-01), Zatloukal et al.
patent: 4935017 (1990-06-01), Sylvanowicz
patent: 4976691 (1990-12-01), Sahota

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