Q. A patient who “lo alenu” due to a tumor in his esophagus can’t swallow food and is being fed only by introducing food directly to his stomach via a catheter or by using a large syringe filled with food that he may previously chew. Does he make a brocho when he chews that food?

A. Shulchan Aruch (O.H. 210: 2) rules that one who chews food and then expels it from the mouth, does not recite a brocho. However, this particular case may be different since there is after all “hanoas meyov” or the benefit of feeling a full stomach. (see Tosafos – Brochos 14a that debates for what kind of benefit we recite a brocho.)
Horav Shlomo Miller’s Shlit’a opinion is that no brocho should be recited because the food is not swallowed and is also not ingested in the usual pleasant form.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a