Hydrophobic catheter and composition
AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.
InventorsXiaoping Guo, James V. Kauphusman, David P. Johnson, Karen L. Armstrong
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Abstract
In various embodiments, a surgical catheter is provided. The catheter may comprise one or more hydrophobic barrier layers made from an ethylene-pertfluoroethylenepropylene (“EFEP”) copolymer. Additionally, the catheter may comprise another polymer layer made from a reactive polar polymer. In at least one embodiment, the reactive polar polymer may be a modified-poly(ether block amide) (“PEBA”) copolymer, such as an amine-terminated PEBA. Moreover, in various embodiments, a composition is provided that may comprise a reactive polar polymer bonded to an EFEP copolymer.
Claims15
A catheter comprising an elongated structure, wherein the elongated structure has a distal portion and a proximal portion, wherein:
- the proximal portion comprises a handle operably connected to the proximal end of the elongated structure;
- the distal portion comprises a shaft, wherein the shaft comprises a first polymer layer bonded to a second hydrophobic polymer layer, wherein the first polymer layer comprises an outer polymer sub-layer and an inner polymer sub-layer, wherein the second hydrophobic polymer layer comprises an ethylene-perfluoroethylenepropylene (“EFEP”) copolymer, and further wherein the shaft comprises a metallic braided layer between the outer polymer sub-layer and the inner polymer sub-layer, wherein the EFEP copolymer comprises end functional groups selected from the group consisting of carboxyl groups, carbonate groups, carboxyl halide groups, and carbonyl halide groups, and further wherein the first layer comprises a reactive polar polymer, wherein the reactive polar polymer comprises an amine-terminated polar polymer;
- and
- wherein the catheter is configured to be inserted into a patient's body.
A catheter comprising an elongated structure, wherein the elongated structure has a distal portion and a proximal portion, wherein:
- the proximal portion comprises a handle operably connected to the proximal end of the elongated structure;
- the distal portion comprises a shaft, wherein the shaft comprises a first polymer layer bonded to a second hydrophobic polymer layer, wherein the first polymer layer comprises an outer polymer sub-layer and an inner polymer sub-layer, and wherein the first polymer layer comprises a reactive polar polymer, wherein the reactive polar polymer comprises an amine-terminated polar polymer, and further wherein the shaft comprises a metallic braided layer between the outer polymer sub-layer and the inner polymer sub-layer;
- and
- wherein the catheter is configured to be inserted into a patient's body.
Dependencies are inferred from the claim text.