A unique, efficient, implantable, electromechanical, total artificial heart.

S Takatani; M Shiono; T Sasaki; I Sakuma; J Glueck; M Sekela; G Noon; Y Nose; M DeBakey

PubMed · 1751127

A unique, efficient, implantable, electromechanical, total artificial heart.

S Takatani·M Shiono·T Sasaki·I Sakuma·J Glueck·M Sekela·G Noon·Y Nose·M DeBakey

Abstract

A completely implantable, one piece electromechanical total artificial heart (TAH) intended for permanent human use was developed. It consisted of left and right conically shaped pusher-plate blood pumps sandwiching a thin centerpiece with a compact, efficient electromechanical actuator. The actuator consisted of a direct current brushless motor; a planetary roller screw fit the space between the two conically shaped pusher-plates. The rotational motion of the motor was converted to the rectilinear motion of the rollerscrew to displace the left and right pusher-plates in the left master alternate mode. The diameter of the assembled TAH was 97 mm, with a central thickness of 82 mm. The overall weight was 620 g, with a displaced volume of 510 ml. The pump provided flows of 3-8 L/min with a preload of 1-15 mmHg against an afterload of 100 mmHg. The net efficiency ranged from 15% to 18%. This model showed good fit in the pericardial space of heart transplant recipients (body weight, 77 kg).

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S Takatani, M Shiono, T Sasaki, I Sakuma, J Glueck, M Sekela, G Noon, Y Nose, M DeBakey. A unique, efficient, implantable, electromechanical, total artificial heart.. https://pubmed.ncbi.nlm.nih.gov/1751127/

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