Medical research

Battery-free pacemaker reduces equipment to size of a dime

Researchers have developed and tested for the first time in vivo a miniaturized, battery-free pacemaker that supports optical and electrical multisite stimulation. The new device is powered wirelessly, omitting the weight ...

Cardiology

Developing next-generation biologic pacemakers

University of Houston associate professor of pharmacology Bradley McConnell is helping usher in a new age of cardiac pacemakers by using stem cells found in fat, converting them to heart cells, and reprogramming those to ...

Cardiology

Bionic pacemaker slows progression of heart failure

Using brain circuits made in silicon, scientists have alleviated symptoms of heart failure by reinstating the body's natural heart rhythm. This study published in The Journal of Physiology today holds great potential for ...

Cardiology

Self-powered 'pacemaker for life' in pigs unveiled

Scientists on Tuesday unveiled a battery-free pacemaker that generates its energy from the heartbeats of pigs in what could pave the way for an "implant for life" in humans suffering from heart defects.

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Artificial pacemaker

A pacemaker (or artificial pacemaker, so as not to be confused with the heart's natural pacemaker) is a medical device which uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's native pacemaker is not fast enough, or there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow the cardiologist to select the optimum pacing modes for individual patients. Some combine a pacemaker and defibrillator in a single implantable device. Others have multiple electrodes stimulating differing positions within the heart to improve synchronisation of the lower chambers of the heart.

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