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US 6,951,675 B2Granted
Multilayer balloon catheter
AssigneeSciMed Life Systems, Inc.
InventorsAlbert Chin, John Jianhua Chen, Thomas A. Svatek, Ronald A. Sahatjian
Life of this patent
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Abstract
Multilayer medical devices, apparatuses for making such devices, and methods of making such devices are disclosed.
Claims34
An article having a wall with at least three coextruded layers including first and second coextruded layers,
- wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds, and the article is capable of being stretch-molded into a balloon.
A balloon having a wall with at least three coextruded layers including first and second coextruded layers,
- wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds, and the balloon has a burst strength of at least about 10,000 psi.
A balloon having a wall with at least three coextruded layers including first and second coextruded layers,
- wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds, and the balloon is capable of passing the multiple inflation test.
Dependencies are inferred from the claim text.