Ves was no stranger to pain, and the biomedical chamber did its best to respond to the mistakes he made when he programmed its initial instructions.
While he had been cognizant enough to account for his body's reduced sensitivity towards sedatives, he did not properly compensate for the fact that his half-alien body also broke down the dose at an abnormal rate!
The speed in which the sedatives wore off was so quick that by the time the device had cut off his leg, he had already regained much of his original pain sensation!
After the medical chamber practically doused his injured body with sedatives, it at least managed to complete the rest of its job with no further issues.
By the time Ves finally woke up, he awkwardly lifted his body from the chamber and hovered above the growth with the help of his antigrav uniform.