Release date: 2016-09-28
Engineers developed the first automatic wristwatch pacemaker that uses the automatic winding principle to provide continuous power to the pacemaker.
In the United States, more than 3 million patients rely on electronic pacemakers to regulate heartbeat. Since the existing electronic pacemakers must use batteries, the battery life is generally 5 to 8 years, and the electrical wires connecting the devices and the heart will gradually wear out. Therefore, in order to ensure the normal operation of the equipment, the patient often only has a certain time. The battery or electrical lead can be replaced by surgery.
In order to completely get rid of the shackles of batteries and electric wires, the biomedical engineer at the University of Bern, Switzerland, inspired by the mechanical technology of automatic clockwork and watches more than two centuries ago, developed a new type of cardiac pacemaker that can take advantage of the patient's own The heart beats to provide continuous power to the device.
In 1777, humans invented the automatic watch. When worn, the self-weight oscillating weight in the watch can be rotated by the movement of the wrist to achieve the effect of winding. When the coil spring is fully tightened, it will unfold and drive the rotation of the watch gear. In modern life, such transmissions can be used to drive micro-generators and achieve power generation.
The Swiss team found that with the same principle, the beating heart can also wind the pacemaker. The researchers removed the time on the automatic watch and placed the clockwork in a 3 cm wide box and stitched it into the living pig's myocardium. The device's output power is 50 milliwatts, and the power required by commercially available pacemakers is about 10 milliwatts, so the device can easily drive electronic pacemakers.
Adrian Zurbuchen believes that "the current device setup has not yet been clarified," he submitted at the European Society of Cardiology (ESC) meeting in late summer 2014. Relevant details of the study. The electrical wires connect the watch components to a box containing electronics and pacemakers. The ultimate goal is to achieve an integrated system design that eliminates traditional electrical leads. Spencer Rosero, director of the pacemaker clinic at the University of Rochester Medical Center in the United States, is not involved in the project. It is expected that it will take time for the device to be truly applied. He also said that if the test is successful, the medical community will likely witness the birth of the first pacemaker with integrated battery and energy harvesting components.
Source: Global Science
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