这些年还有许多其他想法也被尝试。比如,很久以前人体动能就用来为手表提供能量,这种动能也足够维持起搏器的运转。人体与外部环境的温差意味着热电偶能够产生一定数量能量。一个适当调谐装置能够捕获北京射频能量并且将其转换成少量可用能源。
Although all these ideas have been shown to work in theoretical tests on lab benches, theyall suffer from the same handicap: intermittent operation. Unconscious patients, forinstance, generate little kinetic energy. Sitting in a warm room reduces the poweravailable from thermocouples. And radio waves are common but not ubiquitous. These areserious drawbacks for an IMD that may be responsible for keeping someone alive.
尽管这些想法在实验的理论测试中运转正常,但是他们都有一个同样的缺陷:间歇运行。例如,处于昏迷的患者产生的人体动能很少。处于温暖的房间中会减少热电偶产生的可用能量。另外射频很常见,但是也不是处处可见。这些问题对于维持生命的可移植医疗设备来说都是十分严重的缺陷。
Power in the blood
血液中的能量。
A glucose-powered implant would solve such problems. Glucose is continuously deliveredthroughout the body by its circulatory systems. A sugar-powered device would thereforehave access to a constant supply of fuel, and could be implanted almost anywhere.
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