Closed system catheter with guide wire

Details Closed system catheter with guide wire Closed system catheter with guide wire

1985-11-22

1987-04-07

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604168, 604171, 604 52, A61M 518

Patent

active

046557504

ABSTRACT:
A catheter system is provided for the introduction and placement of a flexible catheter into the lumen of an artery or vein. A guide wire is provided and is kept in a sterile condition within a flexible bag-like enclosure attached to the hub of a needle. The needle is hollow and is sharpened in the usual manner and is secured in a hub to provide a needle assembly. This hub is provided with a skirt and extends through this hub and into flow communication with a "flashback" chamber. In one embodiment, the needle is connected to a tubular member having a transverse hole near its interior end, and in another embodiment the needle's inner end is in flow communication with a channel or annular groove in a centering plug. In every embodiment, there is a centering plug which provides a guideway for the guide wire which is positioned in this guideway to prevent fluid flow. The guide wire is manipulated forwardly by grasping the wire through the bag-like enclosure and advanced forwardly by "feel" and into the lumen after penetration has been made as indicated by the "flashback." The catheter is separated from the needle hub and advanced along the guide wire until placement is achieved, after which the needle, guide wire and bag are withdrawn from the patient and discarded.

REFERENCES:
patent: 2915063 (1959-12-01), Cutter
patent: 4326520 (1982-04-01), Alley
patent: 4525157 (1985-06-01), Vaillancourt
patent: 4563176 (1986-01-01), Gustavsson et al.
"A Method for Ureteric Catheterisation", The Lancet, p. 557, Sep. 14, 1963.

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