A sphenopalantine ganglion block is used to provide immediate relief of headache pain and to treat chronic migraine headaches. A revolutionary device called the SphenoCath is used to deliver anesthetic through the nasal cavity, without use of a needle, into the sphenopalantine ganglion. The SphenoCath is placed into the nasal cavity using x-ray guidance in a procedure suite by a physician. Prior to insertion, a local anesthetic is used to reduce nasal irritation during the procedure.
Here are download The Sphenopalantine Instructions.