Biodegradable polymer substrates loaded with active substance suitable for the controlled release of the active substance by means of a membrane

摘要

Biodegradable hollow fibres with an asymmetric wall, the cavity of which containing an active substance like a drug, hormone etc. or a dilute form of the latter and both ends of the hollow fibre being closed for the controlled release of the active substance as well as a process for the manufacturing of such hollow fibres.