Medical instruments, apparatus and devices for the cutaneous, epicutaneous or patch-based administration or delivery of medical or pharmaceutical substances for the treatment, alleviation or prevention of allergies or immunological disorders; pads and skin patches for receiving, holding or containing medical or pharmaceutical substances for the treatment, alleviation or prevention of allergies or immunological disorders; pads and skin patches for medical training purposes; pads and skin patches for medical use, namely for use in training medical professionals on the transdermal delivery of pharmaceuticals or medical preparations; medical instruments, apparatus and devices sold without medication for the later administration, by cutaneous or epicutaneous means, of medical or pharmaceutical substances; pad, skin patch and occlusion patch dispensers and applicators for medical use; parts and fittings for all the aforesaid goods