A Boston EMT was stabbed multiple times by an “emotionally disturbed” patient that she was transporting on Wednesday afternoon — who also proceeded to “mace” her partner, according to police officials.

“These EMTs did not deserve this,” BPD Commissioner William Gross told reporters at a press conference.

“Every day they go out and they help people — they save lives,” Gross said. “They did not deserve to be attacked.”

The paramedics were transporting their assailant — described only as a woman picked up in East Boston — to Mass General Hospital when she became “unruly” and set upon them, according to police.

First, she allegedly stabbed the female EMT and seriously wounded her. Then she went after her partner, who had stopped the ambulance and come to the back to assist, cops said.

“The patient/suspect reportedly either had some sort of OC or Mace on her person and proceeded to spray her,” said EMS Chief James Hooley. “Boston police arrived very quickly and were able to subdue the patient. One of the officers applied a tourniquet to her leg, as she bleeding heavily at the time.”

Footage from the scene shows first responders working frantically to treat the EMT who got stabbed. She was transported to Mass General, along with her partner, and said to be undergoing surgery. Police officials expect her to make a full recovery.

“Our first responder family faces dangers every day,” said Commissioner Gross. “There’s no such thing as a routine call. They are to be commended.”

The disturbed patient was arrested at the scene and expected to be arraigned Thursday morning.