"You are not the only one," she said simply, opting to leave it at that for the time being. "No, I am not a part of the medical team. However, I am the resident expert on advanced cybernetics. My knowledge was vital to your survival. You may call me Seven of Nine."
And while she was the expert, she certainly wasn't the only one with extensive knowledge of cybernetics or the complex circuitry of his suit. Tony Stark and Lieutenant Dax had been instrumental in their efforts, and she appreciated the assistance they were able to provide. Their efforts, combined with Doctor McCoy's medical expertise, had ultimately saved this man's life. Had they not tended to him, he surely would have died shortly after his arrival.
In fact, Seven was almost certain he actually did in his timeline, judging from what those on the communications network had to say.