Catheters with variable properties

Details Catheters with variable properties Catheters with variable properties

1994-03-30

1995-10-10

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604282, A61M 2500

Patent

active

054566746

ABSTRACT:
Catheters manufactured by extrusion are described along with methods and devices for their manufacture. Catheters are manufactured according to the invention by simultaneously conveying a plurality of streams of different materials to a molding nozzle and merging the streams together to form a catheter. An apparatus for the manufacture of such catheters includes means for opening and closing the flow of materials in a controlled manner to thereby vary the composition within the finished extrusion profile. The finished extrusion profile is provided as a catheter containing at least one wall section having bands of different materials extending longitudinally along the length of the catheter.

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patent: 5226899 (1993-07-01), Lee et al.

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