An implant includes a tube for permitting fluid flow. A flow controlling rod may be inserted within the tube passage. One or more holes around the circumference of the tube may be selectively permanently or temporarily occluded to give desired flow characteristics....http://www.google.es/patents/US6510600?utm_source=gb-gplus-sharePatente US6510600 - Method for manufacturing a flow regulating implant
Method for manufacturing a flow regulating implant
