Quite a gruesome photo.
Re-reading your post ... Carotid of jugular?
It was his jugular, not his carotid...I read something that said carotid, and when I saw the video, I thought “That can’t be his carotid, if it were, blood would have been everywhere and he wouldn’t have been on his knees holding his neck!”
He would have been unconscious and shortly dead. (the jugulars are closer to the surface than the carotids are...just another example of God’s “intelligent design”!)