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US 4,576,772 AGranted
Catheter with optimum resistance to bending and method of manufacture
AssigneeWarner Lambert Technologies, Inc.
InventorGeorge J. Carpenter
Life of this patent
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Abstract
A multi-lumen fluid-tight catheter having optimum resistance to bending and method of manufacture. The catheter is notched about its periphery and along its length to create voids which are filled with a vulcanized polymeric material.
Claims11
A method of controlling resistance to bending in a multi-lumen catheter comprising the steps of
- providing a plastic tube of a given hardness, a given resistance to bending and a given length having a plurality of lumens, notching the tube about its periphery and along its length to create voids and to develop a vertabra-like structure, and filling the voids with a vulcanizable polymeric material having a hardness when cured less than the hardness of said plastic tube whereby the resistance to bending of said tube is reduced.
Dependencies are inferred from the claim text.