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Scientists have created a silicon beating heart

This is very interesting quit an innovation for future ETH researchers have created an artificial, silicone heart to help combat the shortage of donor hearts It looks like a real heart. And this is the goal of the first entirely soft artificial heart: to mimic its natural model as closely as possible. The silicone heart has been developed by Nicholas Cohrs, a doctoral student in the group led by Wendelin Stark, Professor of Functional Materials Engineering at ETH Zurich. The reasoning why nature should be used as a model is clear. Currently used blood pumps have many disadvantages: their mechanical parts are susceptible to complications while the patient lacks a physiological pulse, which is assumed to have some consequences for the patient. ![large_47XpeUoyzqt62zMqtjYMB8Smhwcq0lvZTUVgQDpwZpE.jpg]( The goal is to develop an artificial heart that is roughly the same size as the patient’s own one and which imitates the human heart as closely as possible in form and function,” says Cohrs. A well-functioning artificial heart is a real necessity: about 26 million people worldwide suffer from heart failure while there is a shortage of donor hearts. Artificial blood pumps help to bridge the waiting time until a patient receives a donor heart or their own heart recovers.គោលដៅគឺដើម្បីអភិវឌ្ឍបេះដូងសិប្បនិម្មិតដែលមានទំហំប៉ុននឹងខ្លួនរបស់អ្នកជំងឺហើយដែលធ្វើតាមដួងចិត្តរបស់មនុស្សយ៉ាងជិតស្និទ្ធតាមទម្រង់និងមុខងារ។ បេះដូងសិប្បនិម្មិតមួយដែលដំណើរការបានល្អគឺជាការចាំបាច់មួយពិតប្រាកដ: ប្រហែល 26 លាននាក់នៅទូទាំងពិភពលោកទទួលរងពីជំងឺខ្សោយបេះដូងខណៈពេលដែលមានការខ្វះខាតនៃដួងចិត្តម្ចាស់ជំនួយ។ ម៉ាស៊ីនបូមប្រដាប់សិប្បនិម្មិតជួយបញ្ចប់ពេលវេលារង់ចាំរហូតដល់អ្នកជំងឺទទួលបានបេះដូងរបស់អ្នកបរិច្ចាគឬបេះដូងរបស់ពួកគេ។ The soft artificial heart was created from silicone using a 3D-printing, lost-wax casting technique; it weighs 390 grams and has a volume of 679 cm3. “It is a silicone monoblock with complex inner structure,” explains Cohrs. This artificial heart has a right and a left ventricle, just like a real human heart, though they are not separated by a septum but by an additional chamber. This chamber is in- and deflated by pressurized air and is required to pump fluid from the blood chambers, thus replacing the muscle contraction of the human heart.ពួកគេបានបង្ហាញថាបេះដូងសិប្បនិមនទន់ភ្លន់ធ្វើការនិងផ្លាស់ទីតាមរបៀបស្រដៀងគ្នាទៅនឹងបេះដូងរបស់មនុស្ស។ ទោះជាយ៉ាងណាក៏ដោយវានៅតែមានបញ្ហាមួយ: បច្ចុប្បន្នវាមានអាយុកាលប្រហែល 3,000 តែប៉ុណ្ណោះដែលស្មើនឹងរយៈពេលមួយពាក់កណ្តាលនៃរយៈពេលមួយត្រីមាស។ បន្ទាប់ពីនោះសម្ភារៈមិនអាចទប់ទល់នឹងសំពាធ។ Cohrs ពន្យល់ថា: "នេះគ្រាន់តែជាការសាកល្បងលទ្ធភាពប៉ុណ្ណោះ។ គោលបំណងរបស់យើងគឺមិនបង្ហាញពីបេះដូងត្រៀមខ្លួនសម្រាប់ការដាក់បញ្ចូលទេតែគិតអំពីទិសដៅថ្មីសម្រាប់ការអភិវឌ្ឍដួងចិត្តសិប្បនិម្មិត "។ ជាការពិតកម្លាំងរាំងស្ងួតនៃសម្ភារៈនិងការសម្តែងនឹងត្រូវបានលើកកម្ពស់យ៉ាងខ្លាំង។ They proved that the soft artificial heart fundamentally works and moves in a similar way to a human heart. However, it still has one problem: it currently lasts for about only 3,000 beats, which corresponds to a lifetime of half to three quarters of an hour. After that, the material can no longer withstand the strain. Cohrs explains: “This was simply a feasibility test. Our goal was not to present a heart ready for implantation, but to think about a new direction for the development of artificial hearts.” Of course, the tensile strength of the material and the performance would have to be enhanced significantly. ![3ekypULEXfqP63ei-M4gU3qKqsz51HxP9nB1ya3bLM4.png]( University Medicine Zurich that brings together 20 research groups from various disciplines and institutions in Zurich and Berlin. Part of the research focuses on improvements on existing blood pumps, such as how to reduce blood damage induced from the mechanical parts of the pump, while others explore extremely elastic membranes or more biocompatible surfaces. This is done in close collaboration with the clinicians in Zurich and Berlin. 👍🏽🌷🌷🌷♥️🤹‍♂️🤸‍♀️🤸‍♂️
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