Inductively powered wireless pacing via a miniature pacemaker and remote stimulation control system.

Area of Science:

• Biomedical Engineering
• Cardiovascular Technology
• Implantable Devices

Background:

• Lead-related complications remain a challenge in traditional pacemakers.
• Leadless pacemakers have limitations including integrated battery risks and functional constraints.
• Existing wireless powering methods face efficiency issues due to Specific Absorption Rate and size limitations.

Purpose of the Study:

• To design a remote-controlled, miniaturized pacemaker system with reduced power requirements.
• To overcome the limitations of current leadless and wireless pacemaker technologies.
• To enable intravascular deployment of a miniaturized cardiac pacing component.

Main Methods:

• Developed a remote-controlled system utilizing intermittent power transfer to minimize energy needs.
• Engineered a miniaturized cardiac component with an optimized circular receiver coil for intravascular placement.
• Conducted epicardial testing in a porcine model to evaluate system performance.

Main Results:

• The system successfully restored mean arterial pressure in a porcine model.
• Achieved low power consumption of 1 mW at distances greater than 3 cm.
• Demonstrated consistent performance with various misalignments (45° displacement, 45° x-axis, 45° y-axis angular).

Conclusions:

• A remote-controlled, miniaturized pacing system with low power consumption was successfully demonstrated.
• The developed technology provides a basis for next-generation wireless implantable cardiac devices.
• This approach addresses key challenges in current pacemaker technology, paving the way for improved patient outcomes.