Set-up, improvement, and evaluation of an electrohydraulic total artificial heart with a separately placed energy converter
| Autor: | Katsuya Tsuchimoto, Yuzo Baba, Chikao Uyama, Hisateru Takano, Katsumi Takahashi, Kinji Tsukahara, Yoshiyuki Taenaka, Yoshinari Wakisaka, Jae Mok Ahn, Takeshi Nakatani, Kazuhiro Eya, Koichi Toda, Yasuhiro Fukui, Koji Koshiji, Eisuke Tatsumi, Takashi Ohno, Toru Masuzawa, Koji Miyazaki |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Computer science
Energy converter Body Weight Biomedical Engineering Biophysics Bioengineering Control engineering General Medicine Heart Artificial Pericardial space Mechanics Prosthesis Design law.invention Electronics Medical Biomaterials Set (abstract data type) law Evaluation Studies as Topic Artificial heart Animals Humans Cattle Current (fluid) Cardiac Output Energy (signal processing) |
| Zdroj: | ASAIO journal (American Society for Artificial Internal Organs : 1992). 42(5) |
| ISSN: | 1058-2916 |
| Popis: | The authors have been developing an electrohydraulic total artificial heart (TAH) system with a separately placed electrohydraulic energy converter to minimize anatomic constraints in the pericardial space. Improvements to the system and current status of the development are reported. The energy converter was miniaturized to improve implantability, and its thickness was reduced to 54 mm. System efficiency was increased by suppressing rush current at the time of motor reversal. Maximum cardiac output of the TAH system was 9 L/min, and maximum system efficiency increased to 10%. The blood pump system was implanted easily in the body of a 57 kg calf, and no significant temperature rise on the energy converter surface was observed. As the next step, main components were integrated into a total system. The transcutaneous energy transfer system could supply power to the TAH without a decline in pump performance, and the internal battery could support the system at 6.5 L/min of cardiac output for 1 hour without a decrease in cardiac output. The authors consider the TAH system with a separately placed energy converter the most promising approach to development of a TAH for smaller sized patients. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|