Systems and methods for endometrial ablation
An endocervical seal has a sleeve with a passageway for receiving an intrauterine interventional or diagnostic tool. The sleeve has a coaxially disposed outer balloon with a distal portion configured to inflate in a cervical os and a proximal portion configured to inflate in a cervical canal.
1. A method of using an endometrial ablation system, comprising
positioning a seal assembly in an endocervical canal with a distal seal end proximate an internal os;
introducing a probe shaft through a central passage in the seal assembly into a uterine cavity;
expanding a distal expandable-collapsible energy-delivery surface carried by the probe shaft so that the expanded surface contacts a wall of the uterine cavity;
observing the axial relationship between the seal assembly and probe shaft to check system parameters against measurements of the endocervical canal and uterine cavity; and
delivering energy through the energy-delivery surface into the wall of the uterine cavity.
2. The method of claim 1 wherein positioning the seal assembly is preceded by measuring a length of the endocervical canal.
3. The method of claim 1 wherein positioning the seal assembly is preceded by measuring a length of the uterine cavity.
4. The method of claim 1 wherein positioning the seal assembly includes expanding a cross-section of the seal assembly.
5. The method of claim 1 wherein introducing the probe shaft through the central passage in the seal assembly is preceded by setting a length dimension of the energy-delivery surface when expanded in the uterine cavity.