Catheter

Details Catheter Catheter

1992-02-11

1994-04-19

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604281, 128658, A61M 3700

Patent

active

053041313

ABSTRACT:
A medical tube has at least one wire running from the proximal end to the vicinity of the distal end thereof, which wire is connected to the tube adjacent the distal end so as to allow the distal tip to be deflected upon movement of the wire. The tube has gaps therein on one side of its longitudinal axis so as to form a predetermined region of weakness, whereby upon tension being applied to the wire the distal end of the tube bends in the direction of the predetermined region of weakness. The medical tube may be a sheath in which is disposed a preformed inner catheter having a complex curve formed into the distal end thereof. The sheath is sufficiently rigid and the inner catheter is sufficiently pliable so that withdrawal of the inner catheter into the sheath substantially straightens out the portion of the complex curve of the distal tip disposed within the sheath. By suitable manipulation of the wire and of the inner catheter with respect to the sheath the shape of the exposed portion of the distal end of the inner catheter may be reformed and transformed to any of a variety of shapes as desired by the user.

REFERENCES:
patent: 4236509 (1980-12-01), Takahashi et al.
patent: 4353358 (1982-10-01), Emerson
patent: 4586923 (1986-05-01), Gould et al.
patent: 4850351 (1989-07-01), Herman et al.
patent: 4898577 (1990-02-01), Badger et al.
patent: 4911148 (1990-03-01), Sosnowski
patent: 4935017 (1990-06-01), Sylvanowicz
patent: 5109830 (1992-05-01), Cho

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