抄録
This paper compares the performance of a linear pulse motor (LPM) and a linear electromagnetic solenoid (LES) when used in a total artificial heart. Our experiences with LPM-driven total artificial hearts have shown that the following problems need to be solved:
1. Long-term reliability of the linear bearings
2. Low thrust of the LPM.
From another technical point of view, these problems concerning the LPM may be solved by using an LES instead. We therefore designed an LES for a total artificial heart, using the finite element method (FEM) for calculation. Comparison of th performance of the total artificial hearts using the LPM and the LES allowed us to reach the following conclusions:
1. The newly designed LES heart has a thrust/ volume ratio four times larger than that of the LPM heart.
2. The LES heart has a longer life than the LPM heart, because there is little friction.
