Patent ID: 6030371
Filing Date: 2000-02-29
Classification: A61M,B05B,B05C,B05D,B23K,B29C,B29D,B29L

Abstract:
A method of making medical tubing, comprising the steps of:providing a core having an outer surface;providing first and second polymer materials, said first polymer material having a different hardness than said second polymer material;applying a nonextruded layer comprising a mixture of said first and second polymer materials over a length of said outer surface of the core by spraying said polymer materials toward the core such that particles of said polymer materials cover the outer surface of the core and are consolidated to form the medical tubing; andchanging a mixed ratio of said first polymer material to said second polymer material as said polymer materials ate being sprayed toward the core to provide a continuous transition of hardness over a length of the tubing.