Steerable infusion guide wire

Details Steerable infusion guide wire Steerable infusion guide wire

1993-05-14

1994-12-27

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

128772, A61M 500

Patent

active

053760832

ABSTRACT:
A guide wire having state-of-the-art handling characteristics for ease in positioning a variety of catheters and other devices within the cardiovascular or other body system wherein the guide wire is also suitable for infusion of small volumes of fluid. The exceedingly small diameter guide wire has unique infusion properties. The guide wire body has at least one helical coil having a flexible nonporous sheath within the lumen. The helical coil is close wound along the majority of its length. The distal end of the helical coil has spaced windings to permit infusion of the fluid. The flexible nonporous sheath terminates proximal to the space wound portion. The solid core wire, which runs the entire length of the guide wire, is located within the same lumen used for infusion. This provides a greatly increased surface area in relation to the cross sectional area of the infusion lumen ensuring a slow but extremely constant infusion rate over a wide range of infusion pressures.

REFERENCES:
patent: 3612058 (1971-10-01), Ackerman
patent: 4763647 (1988-08-01), Gambole
patent: 4815478 (1989-03-01), Buchbinder et al.
patent: 4932419 (1990-06-01), de Toledo
patent: 5154705 (1992-10-01), Fleischhacker et al.
patent: 5165421 (1992-11-01), Fleischhacker et al.
patent: 5211636 (1993-05-01), Mische

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