Catheter with steerable distal end

Details Catheter with steerable distal end Catheter with steerable distal end

1994-05-19

1996-01-16

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604282, 128657, A61M 3700, A61M 2500

Patent

active

054844070

ABSTRACT:
A catheter for introduction into blood vessels or other passages in a patient's body has an elongated flexible tubular member with a readily flexible distal end portion, a less flexible intermediate portion and a proximal end portion. The distal end portion can be bent relative to the intermediate portion by a wire-, filament- or strip-shaped flexing element which extends through a lumen of the intermediate portion and through an extension of such lumen in the distal end portion and has a distal end affixed to the tip of the distal end portion. The intermediate portion is made stiffer than the distal end portion of the tubular member by appropriate shaping of the cross-sectional area of the intermediate portion and/or by resorting to one or more stiffening elements, such as a sleeve-like guide surrounding the flexing element in the respective lumen of the intermediate portion of the tubular member. The proximal end of the flexing element can be pulled, to thereby flex the distal end portion relative to the intermediate portion of the tubular member, by a rotary or reciprocable manipulator at the proximal end of the tubular member.

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The Random House College Dictionary: Revised Edition (Random House, Inc., 1979), p. 1065.

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