1) Hospitalise 2) Hospitalize 3) Institutionalise 
institutionalise verb cause to be admitted; of persons to an institution; `After the second episode, she had to be committed`; `he was committed to prison`
to make institutional. · to make into or treat as an institution: the danger of institutionalizing racism. · to place or confine in an institution, esp. one for the care of mental illness, alcoholism, etc.