Puncture apparatus

A method of preventing a region of a living body from being punctured, the method comprising:

• inserting an insertion member into a living body, the insertion member including a urethral insertion member that is inserted into a urethra and a vaginal insertion member that is inserted into a vagina, the urethral insertion member and the vaginal insertion member each having at least two sensors, the at least two sensors on each of the urethral insertion member and the vaginal insertion member being arranged such that a sensor is on a distal portion of the urethral insertion member and an other sensor is proximal to the sensor on the distal portion of the urethral insertion member, and a sensor is on a distal portion of the vaginal insertion member and an other sensor is proximal to the sensor on the distal portion of the vaginal insertion member, and wherein the at least two sensors on each of the urethral insertion member and the vaginal insertion member define a target tissue to be punctured;
• inserting a puncture needle that punctures living body tissues near the insertion member in a state in which the insertion member is inserted into the living body, the puncture needle having at least one sensor on a distal portion of the puncture needle;
• detecting a positional relationship between the distal portion of the puncture needle and the insertion member;
• informing an operator of the positional relationship between the distal portion of the puncture needle and the insertion member using a monitor;
• and
• adjusting the positional relationship between the distal portion of the puncture needle and the insertion member by changing the positional relationship of the distal portion of the puncture needle relative to the urethral insertion member and the vaginal insertion member.