ASHTON, PAUL,CHOU, KANG-JYE,GUO, HONG,SHIMIZU, ROBERT W.
申请号：
CA2484632
公开号：
CA2484632C
申请日:
2003.05.01
申请国别(地区):
CA
年份:
2012
代理人:
摘要：
A drug delivery device can, in whole or in part, be formed by co-extruding adrug core and an outer tube. The outer tube may be permeable, semi-permeable,or impermeable to the drug. The drug core may include a polymer matrix whichdoes not significantly affect the release rate of the drug. The outer tube,the polymer matrix of the drug core, or both may be bioerodible. The co-extruded product can be segmented into drug delivery devices. The devices maybe left uncoated so that their respective ends are open, or the devices may becoated with, for example, a layer that is permeable to the drug, semi-permeable to the drug, or bioerodible.
