I was able to locate an exact specimen of the Dacron aortic graft that was sutured to my heart and implanted in my chest in 2015. See picture. I paid $40 for it off an expired medical device website. (Stapler is for scale. ) It is humbling to have the greatest medical technology known to humankind inside your body carrying all of your blood --every day , every night , every month , every year. I want to thank the team at WL Gore (Gore-Tex ! ) company for the graft , Medtronic, St. Jude Medical, 3M, Baxter, and the hundreds of other medical and pharmaceutical companies who helped save my life. I also want to thank all of the first responders, hotel staff, cardiac ICU nurses, all of the doctors, all of the therapists, and all of the orderlies, who brought me back from the dead. I am forever grateful to UCSD in La Jolla, California and to all the people of San Diego.