Medical device with mitigation for tissue perforation

A medical device comprising:

• an introducer configured to be inserted into a uterine cavity through a cervical canal which is narrower than the uterine cavity, the introducer including a treatment device configured to activate a treatment modality at a distal end of the introducer;
• a sensor at the distal end of the introducer;
• and
• a controller;
• wherein the introducer is configured to place the sensor in intimate contact with tissue during insertion of the introducer into the cervical canal and to remove the sensor from the intimate contact with tissue after the introducer is inserted into the uterine cavity;
• wherein, in use:
• the sensor provides a first status signal when the sensor is in intimate contact with the tissue inside of the cervical canal and provides a second status signal when the sensor is free of the intimate contact with the tissue;
• the controller generates a signal which indicates the distal end of the introducer is located in the uterine cavity when the second status signal is preceded by the first status signal;
• the treatment device activates the treatment modality at the distal end of the introducer after determining that the distal end of the introducer is located in the uterine cavity;
• and
• the controller does not generate the signal which indicates the distal end of the introducer is located in the uterine cavity when the second status signal is not preceded by the first status signal.

A medical device comprising:

• an introducer configured to be inserted into a uterine cavity through a cervical canal which is narrower than the uterine cavity, the introducer extending from a proximal end to a distal end and comprising a distal section at the distal end, the distal end of the introducer being contoured or tapered to assist in inserting the introducer through the cervical canal and into the uterine cavity while preventing perforation of surrounding tissue, the introducer further comprising a treatment device configured to activate a treatment modality at the distal end of the introducer;
• a sensor located at the distal section;
• and
• a controller;
• wherein, in use:
• the sensor generates a first status signal while the distal section of the introducer is located inside of the cervical canal and the sensor is in intimate contact with tissue;
• the sensor generates a second status signal while the distal section of the introducer is located inside of an area that is wider than the cervical canal and the sensor is free of the intimate contact with the tissue;
• the controller generates a signal which indicates the distal section of the introducer is located in the uterine cavity when the second status signal is preceded by the first status signal;
• the treatment device activates the treatment modality at the distal end of the introducer after determining that the distal section of the introducer is located in the uterine cavity;
• and
• the controller does not generate the signal which indicates the distal section of the introducer is located in the uterine cavity when the second status signal is not preceded by the first status signal.