Gaseous nitric oxide has been delivered to chronic wound patients since the late 1990's. Below are some references of papers that delivered gaseous nitric oxide to patients with chronic wounds.
Reference papers (click on Title to open):
A. M. Shulutko, N. V. Antropova, Yu. A. Kruger
Khirurgiia (Mosk) 2004; 12:43-46
Gregory Fridman,* Gary Friedman, Alexander Gutsol, Anatoly B. Shekhter,
Victor N. Vasilets, Alexander Fridman
Plasma Process. Polym. 2008, 5, P 515–520
Chris C. Miller,1 Minna K. Miller,2 Abdi Ghaffari,3 and
J Cutan Med Surg 2004; 233–238
Suzdaltsev. I.V., Polapin. I.A.
Medical Sciences No 5, 2013 P 409-411