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Knowledge: Flexible 3D printing heart approaches human heart in form and function
Advanced 3D printing model and manufacturing technologies that can produce flexible machines that can be used not only for search and rescue software robots, but also for people on mobile waiting lists, such as flexible hearts, not long ago. Swiss researchers have built the world's first flexible heart with a shape, size and function that is highly similar to a human heart, using 3D printing technology.
Nicholas Coles et al., of the Federal University of Technology in Zurich, reported in a new issue of the American Journal of artificial organs that the artificial heart, made of soft silica, made of 3D printing model and wax-lost casting, weighs 390 grams. The volume is 679 cubic centimeters. The new artificial heart is an intrinsically complex silica gel that contains a right ventricle and a left ventricle with an extra compartment separated by compressed air to inflate and vent to simulate contraction and blood extraction. The chamber acts like a muscle, pumping blood in and out of the heart. Because it is a single solid silicone structure, it does not have the common disadvantage of typical metal and plastic mechanical pump, that is to say, it is susceptible to complications. It is roughly the same size as the patient itself and mimics the human heart as much as possible in form and function. At present, artificial heart blood pump can pump blood, but its mechanical parts are easy to bring adverse effects to users.
But the artificial heart is still in the test stage. Due to the material's limited capacity to withstand, it can only continue to beat about 3000 times, that is, 30 to 45 minutes of work. The tensile strength and properties of the material still need to be improved, and it is now necessary to find or develop more durable materials and to improve the performance of artificial organs to last longer than this. The product can't be implanted into the human body, but it can provide a new direction for the artificial heart. In the future, 3d printing model can be used as a temporary heart, rather than a blood pump used by hospitals today for patients waiting for a heart transplant.
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