Ultrathin-wall fluoropolymer tube with removable fluoropolymer core
OwnerThomas F. Buck, Diane P. Fukudainventors
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Abstract
An ultrathin-wall sintered fluoropolymer tube is disclosed which has a wall thickness less than about 0.002 inch (0.051 mm). Also, disclosed are fluoropolymer tubes which have been extruded over and are supported by a removable, sintered fluoropolymer core. Preferably the fluoropolymer core contains an inorganic filler such as glass beads. Integral multilayered tubes which can be used as automotive cables or medical catheters are also disclosed. These multilayered tubes have an inner lubricious sheath comprises of the afore-described sintered fluoropolymer tube, with or without the removable fluoropolymer core, surrounded by an outer sheath comprised of one or more different materials.
Claims53
An article comprising an ultrathin-wall sintered fluoropolymer catheter tube having a wall thickness less than about 0.0020 inch (0.051 mm), said tube having a controlled relatively uniform inner diameter.
An article comprising a sintered ultrathin-wall fluoropolymer tube and inside said tube a cylindrical removable sintered fluoropolymer core wherein said core contains an inorganic filler comprising glass beads.
An article comprising a multilayered tube comprising an outer sheath comprised of at least one material surrounding an inner lubricious sheath of a sintered fluoropolymer wherein said inner lubricious sheath has a wall thickness of less than about 0.002 inch (0.051 mm), said sheath having a controlled relatively uniform inner diameter.
An article comprising a multilayered tube comprising an outer sheath comprised of at least one material surrounding an inner lubricious sheath of a sintered fluoropolymer wherein said inner lubricious sheath has a wall thickness of less that about 0.0020 inch (0.051 mm), said sheath having a controlled relatively uniform inner diameter, wherein said inner lubricious sheath surrounds a cylindrical removable sintered fluoropolymer core.
An article comprising an essentially void free ultrathin-wall fluoropolymer tube having a wall thickness less than about 0.002 inch (0.051 mm), said tube having a controlled relatively uniform inner diameter.
Dependencies are inferred from the claim text.