| 摘要 |
<p>The invention relates to a transdermal system with stepwise medicament release onto the skin providing that the permeability of a membrane (13, 23) exposed to a contact with an active substance or active substances to be released, equals to zero or is higher than zero. The area of the membrane (13, 23) is smaller than the area through which the active substance is released from the system.</p> |
