▁open ▁heart ▁surg ery ▁programme ▁at ▁K etter ing ▁Hospital ▁and ▁later ▁became ▁the ▁director ▁of ▁the ▁general ▁surg ery ▁res iden cy - training ▁programme ▁there , ▁which ▁he ▁established . ▁ ▁Death ▁and ▁legacy ▁De W all ▁died ▁at ▁his ▁home ▁ 1 5 ▁August ▁ 2 0 1 6 . ▁▁ ▁In ▁ 2 0 1 8 ▁he ▁was ▁post hum ously ▁induct ed ▁into ▁the ▁Day ton ▁Region ' s ▁Walk ▁of ▁Fame . ▁A ▁rep lica ▁of ▁his ▁first ▁o xygen ator ▁is ▁on ▁display ▁at ▁the ▁National ▁Museum ▁of ▁American ▁History ▁at ▁the ▁Smith son ian ▁Institution . ▁ ▁Selected ▁publications ▁▁ ▁" Card i ov asc ular ▁In vent iveness ▁Within ▁the ▁University ▁of ▁Minnesota ▁Department ▁of ▁S urg ery ", ▁The ▁Ann als ▁of ▁Thor ac ic ▁Medicine ▁( J une ▁ 2 0 0 5 ), ▁Vol . ▁ 7 9 , ▁Issue ▁ 6 , ▁pp .   2 2 1 4 – 2 2 1 6 , ▁▁ ▁" Or ig ins ▁of ▁open ▁heart ▁surg ery ▁at ▁the ▁University ▁of ▁Minnesota ▁ 1 9 5 1 ▁to ▁ 1 9 5 6 ", ▁The ▁Journal ▁of ▁Thor ac ic ▁and ▁Card i ov asc ular ▁S urg ery ▁( August ▁ 2 0 1 1 ), ▁Vol . ▁ 1 4 2 , ▁Issue ▁ 2 , ▁pp .   2 6 7 – 2 6 9 , ▁▁ ▁" The ▁E volution ▁of ▁the ▁Hel ical ▁Res er voir ▁P