According to reports, at the 2012 Scientific Meeting of the American Heart Association held on the 4th, a research result submitted by scientists showed that an experimental device can convert the energy of the heart beat to provide enough power for the pacemaker.
In the preliminary study, the researchers tested an energy harvesting device that utilizes the piezoelectric effect. The lead author of the study, Dr. Amin Karami, a researcher in the Department of Aerospace Engineering at the University of Michigan, said that this method is a promising technical solution for cardiac pacemakers because the pacemaker requires only a small Power can be run. The piezoelectric effect can also be used in Other intracardiac implantation devices such as defibrillators.
Current pacemakers must be replaced every 5-7 years when the battery is exhausted, so it is very expensive and inconvenient. Karami said that many patients have been wearing a pacemaker since childhood. If this new technology is realized, they will save a lot of trouble in their lifetime. "For pediatric patients, they have to use a pacemaker for many years. If this new technology is adopted, they will have fewer operations."
The researchers first measured the heartbeat-induced vibration in the chest cavity, and then used a "vibrator" to replicate it in the laboratory and connected it to the prototype of the heart capture device they developed. The performance test of the prototype device was based on 100 sets of simulated heartbeats with different heart rates. The results showed that more than 10 times the power required by the pacemaker was generated. The next step is to implant this energy capture device, which is only half the size of the batteries currently used in pacemakers.
Researchers have developed linear and non-linear heart energy capture devices that can support conventional pacemakers. The linear device is only suitable for a specific heart rate, heart rate changes will prevent it from harvesting enough power. Non-linear devices use magnetic materials to increase power output and are no longer sensitive to heart rate changes. The non-linear device can work within a heart rate range of 20 to 600 beats per minute to continuously power the pacemaker by harvesting enough power. Moreover, devices such as mobile phones or microwave ovens will not affect the normal operation of non-linear devices. (Reporter Feng Weidong Chang Lijun)
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Pacemaker is an important means of heart disease treatment. Although the pacemaker operation is now mature, just cut a small hole under the skin, make a pouch to put the pacemaker in, and implant the electrode into the heart through the subclavian vein by puncturing, about an hour Completed, but no one did not want to suffer less "knife", and the new results described in the article may make heart disease patients get what they want. You let me "heartbeat", I give you "power", such a harmonious symbiosis between the heart and the pacemaker may save the patient from a lot of unnecessary pain.
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