I was thinking probably it's the patient of that same surgeon, who's about to perform surgery on him with the scalpel that's not sharp, bit at least it's shiny. ;-)
Klingon sets tense by context and not by marking the verb. So we usually say there is no tense in Klingon. There is aspect, but that is different than tense. A short explanation was given in the Tips & Notes of the first unit: https://www.duolingo.com/skill/kl/Useful-phrases/tips-and-notes.