Tube/mandrel assemblies
AssigneeZeus Co., Ltd.
InventorsEdward H. Rast, III, Daniel Green, Dana Barringer, Denise Browne, Patrick Cooper
Life of this patent
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Abstract
The disclosure relates to assemblies of thin-walled tubes and mandrels for use in thin wall catheter liners. For example, an assembly is provided that includes a thin-walled PTFE tube comprising walls with a thickness of less than 0.004 inches, positioned over a filled mandrel comprising PTFE with one or more fillers incorporated therein. The disclosure further provides, independently, thin-walled tubes and filled mandrels, as well as methods of making and using such components.
Claims22
An assembly comprising:
- a thin-walled PTFE tube comprising walls with a thickness of less than 0.004 inches, positioned over a filled mandrel comprising PTFE with one or more fillers incorporated therein.
A filled mandrel comprising PTFE with one or more fillers incorporated therein, wherein the one or more fillers comprise microparticles.
A tube having an inner surface, an outer surface, and an inner lumen, the tube comprising PTFE with a wall thickness less than 0.0040 inches, wherein the tube has a stress at break above 10,000 psi;
- and
- wherein:
- the inner surface has a minimum COF below 0.07;
- and/or
- the inner surface has a minimum average surface roughness, Ra, of 8 μ-inch and/or a minimum LMS surface roughness, Rm, of 25 μ-inch.
Dependencies are inferred from the claim text.