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US 6,638,468 B1Granted
Method of reducing the wall thickness of a PTFE tube
AssigneeSciMed Life Systems, Inc.
InventorsJason P. Hill, James R. Lininger, Brian J. Brown
Life of this patent
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AssigneeSciMed Life Systems, Inc.
InventorsJason P. Hill, James R. Lininger, Brian J. Brown
Estimating the term…
A thin wall PTFE tube is formed from an extruded green tube. The PTFE tube includes an inner tubular surface and an opposed outer tubular surface defining a tubular wall of a first thickness. The tubular wall is compressed to uniformly reduce the wall-thickness and circumferentially orient the tube. The PTFE tube is positioned over a first elongate roller with the inner tubular surface being in contact therewith. A second roller is positioned against the outer tubular surface of the PTFE tube. The pair of rollers are counter rotated so as to circumferentially compress the tubular wall between the rollers. This results in the uniform reduction in the tubular wall from the first thickness to a lesser second thickness and a circumferential orientation otherwise not occurring in an extruded PTFE paste extrusion.
A method of forming a thinned-wall polytetrafluoroethylene (PTFE) tube comprising the steps of:
A method of forming a thin wall expanded polytetrafluoroethylene (ePTFE) prosthetic tube comprising the steps of:
A method of forming a thin wall polymer tube comprising the steps of:
Dependencies are inferred from the claim text.