Membrane splittable tubing

Details Membrane splittable tubing Membrane splittable tubing

1990-05-08

1992-04-14

Wilson, John J.

Surgery

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

Treating material introduced into or removed from body...

604164, A61M 500

Patent

active

051043882

ABSTRACT:
A splittable tube, useful in medical applications as a cannula for insertion into the body, comprises an inner and an outer layer. The inner layer defines a central lumen for accepting catheters and probes. The inner layer also includes a longitudinal slot through its wall for defining a stress line in the outer layer. The outer layer is very thin, membrane-like, and tears along the longitudinal stress line when the cannula is pulled to the side of a catheter occupying the central lumen. The tube may be made of electrically insulating material and used, for example, as strippable insulation as telephone or house wire, and strippable without the use of tools.

REFERENCES:
patent: 3677243 (1972-07-01), Nerz
patent: 4449973 (1984-05-01), Luther
patent: 4451256 (1984-05-01), Weikl et al.
patent: 4581390 (1986-04-01), Flynn
patent: 4776846 (1988-10-01), Wells
patent: 4865593 (1989-09-01), Ogawa et al.
patent: 4874374 (1989-10-01), Kousai et al.
patent: 4994047 (1991-02-01), Walker et al.

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