Patent ID: 7616979

Claim:
A method of monitoring the pH of tissue lining a female patient's uterine cavity during a medical treatment which includes occluding one or more uterine arteries, comprising: a. providing a pH measuring catheter having an elongated shaft with a proximal end, a distal end, and an active electrode on the distal end thereof for detecting a pH parameter; b. advancing the pH measuring catheter through the patient's vaginal canal until the distal end is located in the female patient's uterine cavity; c. urging the active electrode on the distal end of the pH measuring catheter into contact with uterine tissue within the uterine cavity; and d. generating a signal from the active electrode representing a pH parameter of the uterine tissue, wherein an introducer sheath having an inner lumen is introduced through the patient's vaginal canal into the patient's uterine cavity and is secured to the patient and the catheter is introduced through the inner lumen of the introducer sheath.