The doctor wasn’t an Eastern doctor, but he’d learned about Eastern medicine back in medical school. Using a needle head for acupuncture was ridiculous! The needle from the bit tube wasn’t as thick as the one found in a syringe, but it still crossed the line! It was highly unlikely that a needle like that would cause no harm to the patient’s nerves and veins, and no doctor would do something like that.
There were emergency situations where other non-professional needles were used in place of proper ones, but only absolute masters of Eastern medicine would carry out such a feat!
It was something that required very solid experience and foundations, and a very stable and controlled hand. Stick the needle in too deeply or too shallowly, and it’d cause unintended harm instead of curing anything.