Biosense Webster's QDOT Micro™ radiofrequency ablation catheter

Area of Science:

• Cardiovascular medicine
• Medical devices
• Electrophysiology

Background:

• Radiofrequency ablation is a key treatment for cardiac arrhythmias.
• Existing ablation catheters face limitations in achieving optimal lesion creation and safety.
• Advancements in catheter technology are crucial for improving ablation outcomes.

Purpose of the Study:

• To describe the novel features of the QDOT Micro™ catheter.
• To evaluate the performance of the QDOT Micro™ catheter in preclinical and clinical settings.
• To assess the procedural efficiency and safety of this new ablation technology.

Main Methods:

• The QDOT Micro™ catheter integrates diffuse external irrigation, six thermocouples, and microelectrodes.
• It allows for high power delivery and temperature-sensing irrigation flow control.
• Performance was assessed through preclinical and clinical evaluations.

Main Results:

• The catheter demonstrated promising procedural efficiency in initial studies.
• Short-term safety outcomes were favorable.
• The technology incorporates advanced features for irrigated radiofrequency ablation.

Conclusions:

• The QDOT Micro™ catheter shows potential for efficient and safe cardiac ablation.
• Further studies are required to confirm long-term effectiveness and lesion quality.
• Durability and superiority over existing methods warrant further investigation.