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publicationDate 2011-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-8043281-B2
titleOfInvention Catheters incorporating valves and permeable membranes
abstract Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes and one or more valves that control flow to the infusion sections.
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