Implant surgeries are in high demand as it gives the patient a technological backed hoped that it damaged body parts will still survive. But implants have their own limitation, specifically those implants that need a small amount of power source. But sometimes the power sources like batteries often fail to do its job. There various other techniques available that exclude the usage of battery-generated power, this includes power harvesting through biological methods such as body heat and heart beats.
Researchers are now emphasizing to develop wireless power delivery system that will power the implanted device externally. The wireless power will be either through ultrasonic frequency or electromagnetic energy. Generally, a normal pacemaker battery lasts for approximate eight years.
A scientist at the National University of Singapore created a device that can transmit power through wireless medium into the internally assembled implant device. The potential of the newly developed technology was tested in a pig model that was installed with a miniature cardiac pacemaker and further powering it wirelessly.
The concept was inspired by the working principles of a microwave that is used in medical field to ablate deep tissue of tumors by heat. The team designed a supple antenna that can be easily placed on one’s palm and transmit the electromagnetic power that can be focused on the deep internal body. While the dissimilar feature of their design isn’t novel, the ground-breaking grouping of phased arrays and conformal exterior resulted in a clear enhancement in energy transmit effectiveness by radio frequency radiation. The team adjusted the cardiac rates of the pig in and reversible manner to ensure the position of the miniature cardiac simulator to the transvenous catheter and to identify whether it is in the generated focal spot.
The newly developed wireless power supply by using electromagnetic waves provides efficient penetration through bone if compared to ultrasound. Additionally, a usual technique used for electromagnetic energy transmission majorly relies on inductive coupling, which is unsuited with miniature devices rooted deep in the body. While there is still an opportunity for development, mainly for trustworthy long-term utilization, the technology embraces instant and hopeful implication for, cancer therapy, biosensors, and neuromodulation.