|Size||1.25||size normal heart|
|LV, left ventricle||144||cm3|
|RV, right ventricle||83||cm3|
|EC, expansion chamber||70||cm3|
|sTAH minus chambers (silicone only)||382||cm3|
|Main body minus chambers (silicone only)||294||cm3|
|Design procedure||CAD design (NX8.5, Siemens)|
|Manufacturing technique||3D-printing lost-wax casting|
The goal of the entirely soft artificial heart is to mimic its natural model as closely as possible. 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. The developed heart beats almost like a human heart.
The soft artificial heart is 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 a complex inner structure. 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.
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Explain in detail the design and production process of the soft total artificial heart (sTAH). Then, the evaluation process of the sTAH on a hybrid mock circulation (HMC) is described. Third, the resulting performance of the TAH during pre- and afterload experiments is presented. Finally, the overal