Analysis of the development of medical equipment battery technology

Source: 2020 - 04 - 04 11 hits: medical equipment battery technology development the first implantable pacemakers application, since 1960, all kinds of active implantable medical device battery has been widely used in the diagnosis and treatment of various diseases, such as implantable cardiac pacemakers and defibrillators, all kinds of nerve stimulator ( Including brain pacemaker, spinal cord stimulator, vagus nerve stimulator, sacral nerve stimulator and phrenic nerve stimulator, etc. ) , drug pumps, ecg recorder, etc. Implantable cardiac pacemakers, for example, now the world each year more than 500 000 cardiac pacemaker implantation in the human body [ 2] , active devices implanted in the body to use for a long time, is a key component of power battery, due to the special embedded application condition, the battery need to satisfy the demands of several major implantable medical devices: safety and high reliability, long service life and stable, high energy density, etc. Used for active implantable medical device is mainly introduced in this paper the development history of the battery. In the early 1970 s, lithium battery was developed, Greatbatch Greatbatch founded in 1970, the company, focus on research for active implants of battery, he thinks that the battery is the most important part of the pacemaker, is also a need to further study the problem. Greatbatch company won the lithium battery technology patent licensing of iodine, has carried on the further technical optimization, applied for a number of related patents, and applied to cardiac pacemaker. In 1972, the first lithium battery-powered pacemakers implanted into human body, using lithium iodine ( Li/I2) The battery. The use of lithium battery is a milestone that implanted cells actively, it solved the problem of the reliability and long life battery. In the next few years, lithium batteries quickly replaced the mercuric oxide, etc all kinds of batteries, now almost all implantable medical devices use lithium battery as a power source. Iodine in fact until now is still a low power lithium-ion batteries of pacemaker is the most widely used batteries, in addition to iodine lithium-ion batteries, and other kinds of lithium battery cathode material is application development, including li/Ag2CrO4 ( Lithium/chromic acid silver) Li/SOCl2 battery ( Lithium/thionyl chloride battery, li/CuS - Lithium/copper sulfide) Li/summary cell ( Li provided/CFx batteries (lithium/manganese dioxide battery, Lithium/carbon fluoride) , lithium/SVO/silver vanadium oxide ( Lithium battery) Such as the application prospects of battery in the active implantable medical devices the rapid development of the active implantable medical devices will push the progress of implantable battery technology. On the one hand, the application of lithium batteries will be updated technology, will improve its comprehensive performance in all aspects. On the other hand also unceasingly battery solutions for the new material, such as the United States in 2013 st. Jude medical company electrodeless pacemaker Nanostim CE approval, its size only & Phi; 41. 4 mm x 6 mm, is a traditional one over ten of the pacemaker, life is with the conventional pacemaker, it is the use of disposable batteries, patent mentioned Nanostim company to develop this pacemaker cells BetaBatt development DECTM [ 24] Tritium, batteries contain radioactive elements. From the perspective of the demand of active medical devices implanted further miniaturization, radioactive nuclear fuel battery could re-enter the market. Microbial fuel cell research and there are also many reports, implantable glucose fuel cell [inventions such as the Massachusetts institute of technology (MIT) 25] , using silicon and platinum materials, through a standard semiconductor manufacturing process, implanted in the body to use, using platinum as catalyst, electronic decomposition of glucose molecules to produce electricity, can generate 3. 4 mW/cm2 average power and peak power of 180 mW/cm2, battery may bring revolutionary change to active into power. Can be applied to the active implantable medical devices battery research is exciting and worth waiting for.