Since divorce petition is already pending, without the written consent of wife and/or permission of the concerned court where the matter is pending, its not possible to get medical records of wife else it will amount to invasion on one’s privacy.Although India lacks laws on privacy but there should be a law against invading people's privacy, unless it's for an investigative purpose court will not allow it.
India is a very good country for criminals. MPs facing criminal charges like rape, murder, arson, kidnapping and what not become Ministers because cases are ONLY PENDING and no conviction has taken place. What does sub judice mean? CBI is investing you and you are the Home Minister under which CBI functions.