DEVICE FOR THE CONTROLLED RELEASE OF A SUBSTANCE

摘要

An implantable drug delivery system is proposed which does not need internal electronics, but can be activated from outside the body. The system comprises a device (10) for the controlled release of a substance, the device (10) comprising at least one compartment (20) in a substrate (11), the compartment (20) being closed by a valve (30), wherein the valve is openable and comprises at least a first material (31) and a second material (32), the opening and/or closing of the valve (30) being provided upon heating and/or cooling of the first and/or second material (31, 32), the first material (31) being heated by electromagnetic induction.