The Time Surgeon

 was a character from the comic book series Time Surgeon.

The Time Surgeon had an assistant, nurse Kara. In a story called Day of the Deathroids, they faced the Minister, who had allied with the Deathroids. The Time Surgeon had a sonic-scalpel, and travelled in a Time-Cabinet.

To defend himself against the plasma-blasts of the Deathroids, he and his assistant activated their chrono-shield. (COMIC: Invasion of the Mindmorphs)

Behind the scenes
The Time Surgeon is a clear allusion to the Doctor.