A man who sustained brain damage after a botched procedure to downsize his tracheostoma has settled his lawsuit for $19.5 million.The settlement payment was disbursed Friday following a Nov. 7 agreement during a mediation with retired judge Donald O’Connell with O’Connell Mediation Services, according to his lawyers at Salvi Schostok & Pritchard P.C.Plaintiff Scot Patterson was represented by firm attorneys Patrick A. Salvi, Patrick A. Salvi II, Thomas R. Mulroy III and Carly E. Shannon.Patterson, then 56 …