Multilayer medical device
AssigneeBoston Scientific Scimed, Inc.
InventorsAlbert C. C. Chin, John Jianhua Chen, Yiqun Wang, David W. Lodin, Lixiao Wang, Ronald A. Sahatjian, Ismail Guler, Robert Burgmeier
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Abstract
A medical device such as a tube or a balloon including wall structure with multiple layers. The wall structure can distribute stress, resulting in reduced defect propagation and failure.
Claims114
A medical device with at least four layers, including layers formed of hard polymer and layers formed of soft polymer.
A medical device comprising at least four layers formed of hard polymer and soft polymer, wherein the soft polymer has a hardness of about 60 Shore D or less.
An extruded medical device comprising at least four polymer layers, including layers of hard polymer and layers of soft polymer, the hard polymer layers each having a thickness of at least about 0.1μ.
A medical device including at least four layers, including at least one layer that comprises a first polymer and a liquid crystal polymer.
An extruded medical device comprising at least four layers wherein at least one layer comprises a first polymer and a liquid crystal polymer.
An extrusion apparatus for making a multilayer article, comprising:
- a first section;
- a second section;
- and
- a plurality of discs between the first and second sections, each of the discs having at least one passageway configured to permit fluid flow therethrough in a flow direction,
- wherein a thickness of at least one of the discs in the flow direction is about one inch or less.
An extrusion apparatus for making a multilayer article, comprising:
- a first section;
- a second section;
- and
- a plurality of discs between the first and second sections, at least one of the discs having at least two channels for forming a layer of the multi-layer article.
A medical device having four or more layers, each layer having a thickness of from about 0.1 micron to about 10 micron, the device having a double wall thickness of from about 0.0001 inch to about 0.0015 inch.
Dependencies are inferred from the claim text.