Disclosed is a medical apparatus. The medical apparatus comprises a fist sub-component, a second sub-component and an activation device or a reagent to produce an activation signal. The first sub-component is implantable or ingestible in a body. The first sub-component comprises a drug, a medical kit, a micro-disease detection system, or an auto-navigation system. The second sub-component comprises a decomposable material (0201) that is integrated with the first sub-component. The decomposition of the decomposable material (0201) of the second sub-component causes breaking up of the whole apparatus. The second sub-component comprises at least first portions of a first type of material (0201) and second portions of a second type of material (0202, 0203), the first (0201) and second portions (0202, 0203) being arranged in a pattern in an interlaced structure of the first (0201) and second portions (0202, 0203), at least the first type of material being decomposable material (0201). The decomposition of the material of the second sub-component is triggered by application of the activation signal to the second sub-component.
