Had they had medical droids (their own medical droids) available, he would have asked Tech to oversee, solely so the chip wasn't damaged. It would have been a better idea, really.

It also would have necessitated waiting longer, and he'd been unwilling to do so. Vader did not enjoy the feeling of not having the Force at his fingertips. Here, one needed every advantage they had.

"I hope the chip wasn't damaged. There was a bit of a struggle with it." Also, he had certainly scraped bone several times. If Vader was paler than normal, it was almost impossible to tell, due to his scars and the Dark Side corruption giving him an unnatural pallour. "And I am grateful for your discretion as to who it came from. As well as all your work on this project."