Hybrid extruded articles and method
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United States of America Patent
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app pub date -
Feb 12, 2004
filing date -
May 24, 2002
priority date (Note) -
Abandoned
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Abstract
The present invention discloses extruded articles, such as tubing or multilumen catheters, having hybrid composition, an axial length and a transverse cross-section orthogonal to the length. The extruded articles have unitary construction and require no assembly. The composition of each cross-section of the article along the length of the article is homogeneous and comprises a first extrudable material and/or a second extrudable material. The percentage of the two extrudable materials in any cross-section varies along the length of the article in a controlled, either continuous or discontinuous manner. The first and second extrudable materials are preferably elastomers having different durometers, color or radiopacity. The weight percentage of one of the two extrudable materials in a cross-section may vary abruptly, smoothly and/or periodically along the length of the article.
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