Ingestible device for sampling material and method for using the same

An ingestible device for sampling material at least one time, the ingestible device comprising:

• a first chamber having an enlargeable volume, wherein the first chamber comprises an inlet, and wherein the first chamber is capable of being filled with the material to be sampled;
• a second chamber having a diminishable volume, wherein the second chamber comprises an outlet;
• a third chamber having an enlargeable volume, wherein the third chamber comprises a further inlet, and wherein the third chamber is capable of being filled with further material to be sampled;
• a fourth chamber having a diminishable volume, wherein the fourth chamber comprises a further outlet;
• a reversible actuating mechanism, wherein the reversible actuating mechanism is configured to, in response to triggering the reversible actuating mechanism, cause (i) an enlargement of the first chamber, thereby collecting the material to be sampled in the first chamber via the inlet and (ii) a diminishment of the second chamber;
• and
• a further reversible actuating mechanism, wherein the further reversible actuating mechanism is configured to, in response to triggering the further reversible actuating mechanism, cause (i) an enlargement of the third chamber, thereby collecting further material in the third chamber via the further inlet and (ii) a diminishment of the fourth chamber.