The Microwave Endometrial Ablation (MEA) System is a surgical device that uses microwave energy to treat excessive menstrual bleeding by destroying tissue lining the uterus (womb).
Endometrial ablation is a minimally invasive surgery that can be a viable alternative to hysterectomy.
Microwave Heating Effect:
– Microwaves heat tissue:
- Depth of absorption is limited and controllable
- Selected to be 3mm for MEA
– Heating occurs to a depth of 5-6mm through thermal conduction
– Temperatures achieve coagulation but are not sufficient to physically remove tissue
MEA thermal mechanism:
– Microwaves penetrate up to 3mm into the tissue
– Microwave energy interacts with the water molecules in the tissue causing them to vibrate at the microwave frequency and heat rapidly
- Rapid tissue heating in first 2-3mm of tissue
- Thermal conduction beyond for a further 2-3mm
- Peripheral blood perfusion prevents further thermal conduction beyond 5-6mm
- Optimal therapeutic temperature throughout the cavity