When the Prophet (صلى الله عليه و سلم ) visited any ailing member of his family, he would touch the sick person with his right hand and would supplicate:
"Allahumma Rab-ban-nasi, adhhibil-ba'sa, washfi, An-tash-Shafi, la shifa'a, illa shifa'uka, shifaan la yughadiru saqaman
[O Allah! the raab of mankind! Remove this disease and cure (him or her)! You are the Great Curer. There is no cure but through You, which leaves behind no disease]."
[Al Bukhari and Muslim]
Note: The word 'Ya'udu' (inquired about the patients health or visited) occurs in the Hadith text quoted by Imaam An-Nawawi. But according to Al-Bukhari this word is 'yuawwidu' which say Ibn Hajar is synonymous to the word 'yarqee' (blew over the patient)