Pulsed Field Ablators (PFA) use short-duration, high-voltage pulsed electric fields to cause electroporation of cell membranes, leading to cell apoptosis and achieving non-thermal ablation. It is often used in tumor ablation (such as liver cancer, pancreatic cancer) and arrhythmia treatment (such as atrial fibrillation ablation). With its non-thermal and precise characteristics, it has become an important technology in minimally invasive interventional therapy.
Block Diagram of Pulsed Field Ablator (PFA)
1. High-Voltage Capacitor Charging Module (HV Capacitor Charger):
- Adopting flyback or push-pull topology, it converts the battery power into 30kV DC high voltage to charge the energy storage capacitor (green power flow).
2. Microcontroller Unit (MCU):
- As the control core (blue control flow), it coordinates the charging module and discharge unit, and realizes human-computer interaction (such as parameter setting, status monitoring) through interfaces (USB, RS232, display, buttons).
3. Discharge Unit:
- With a multi-channel design, it connects multiple components in series (such as switches, pulse forming networks) to release the stored high-voltage energy in the form of pulsed electric fields (lightning symbol in the figure) for ablation therapy.
Frequently Asked Questions:
Q: What are the applications of ultra-high voltage power semiconductor devices in innovative medical equipment?
A: They are mainly used in high-voltage pulse medical equipment, such as AED, PFA, etc.
More Littelfuse circuit protection products:
Littelfuse circuit protection products, with their excellent performance, provide stable and reliable signal transmission guarantees for medical electronic equipment.
- Fuses
- Electrical special fuses
- PTC resettable fuses
- Gas Discharge Tubes (GDT)
- Varistors, MOV
- Circuit breakers
More information about Littelfuse medical product safety design:
- Littelfuse Medical Product Safety Design: Defibrillator (AED)
- Littelfuse Medical Product Safety Design: X - ray Imaging System Power Supply System
- Littelfuse Medical Product Safety Design: Ultrasonic Scalpel System
- Littelfuse Medical Product Safety Design: Intravascular Pulsed Decalcification Instrument
- Littelfuse Medical Product Safety Design: Pulsed Field Ablation (PFA)
- Littelfuse Medical Product Safety Design: Ventilator System
- Littelfuse Medical Product Safety Design: Ultrasonic Scanning Equipment