Can technology know how to replace our GI tract?
Answer:
Considering that feces own almost no nutritional value, the GI tract is terribly efficient.
If you want to circumvent your GI system, maybe you could pump a solution of glucose, amino acids, vitamins, etc. (i.e. the products of digestion and absorption by the GI system) directly into the lymphatic system. The pre-eminence of pumping into your lymphatic system instead of directly into your blood stream is two fold: 1) the nutrients absorbed by the GI system move about into your lymphatic system, so pumping nutrient solution directly there would be closer to how your body generally operates, and 2) the lymphatic system can nick care of copious of the pathogens, toxins, and allergens that may be in the nutrient fluid, up to that time getting into your blood stream.
Nevertheless, poking a hole in your body (i.e. injection site or catheter site) other carries a risk for introducing the outside environment to the inside of your body - which can be a desperate thing contained by allowing bacteria to attain into your body. Your GI system has safeguard to minimize invasion of bacteria. Also, putting a catheter into blood vessel other carries the risk of not simply infection, but generating blood clots that can mete out strokes and the like.
I judge it would be better to just put away or drink a nutritionally balanced concoction - if you want no frills, later just enjoy it contain all called for components and nothing else. If in that are any deleterious effects, then the formulation be incorrect and/or incomplete.
recently here are techniques to place an artificial stomach or liver within case of a chronic disease such as viral hepatitis but what you said roughly the device is still far away at least contained by the near adjectives and no,the GI tract is efficient considering the huge diversity of what we eat from phenyl alanine to hotdogs !
Yes it can.