Northwestern scientists develop world smallest injectable pacemaker

Northwestern scientists develop world smallest injectable pacemaker

Researchers at Northwestern University have developed the world’s smallest pacemaker, small enough to be injected via syringe. This device is mainly beneficial for newborns with congenital heart disease. Unlike traditional pacemakers, which require surgical implants and removal, this pacemaker is dissolvable, reducing the risk of infection and tissue damage.

Revolutionizing Pediatric Cardiac Care

This pacemaker is smaller than a grain of rice, wireless, and wearable, mounting on the patient’s chest to control pacing. When the device detects any irregular heartbeat, it emits infrared light, which penetrates through the patient’s skin, breastbone, and muscles to control the pacing. This has emerged as a revolutionary development, as the components of this pacemaker are biocompatible and naturally dissolve into the body’s fluids.

Especially Designed for Children

Igor Efimov, who co-led the study, said, “Our major motivation was children.” He stated that about 1% of children are born with congenital heart disease, regardless of their country. These children generally do not need long-term pacing after surgery, as their hearts self-repair. However, the first seven days are crucial, and this pacemaker provides gentle stimulation during this period.

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Read More :- https://news.northwestern.edu/stories/2025/03/worlds-smallest-pacemaker-is-activated-by-light/