Davis P K, Rosenberg G, Snyder A J, Pierce W S
College of Medicine, Pennsylvania State University, Hershey 17033.
Ann Thorac Surg. 1989 Jan;47(1):172-8. doi: 10.1016/0003-4975(89)90260-9.
Pneumatic total artificial heats, although demonstrating utility as temporary mechanical circulatory support devices, have not demonstrated a great deal of promise as permanent cardiac replacements. The increasing number of patients who would be candidates for total heart replacement suggests a large role for a permanent implantable total artificial heart. To that end, the Pennsylvania State University is developing an electric motor-driven total artificial heart; the results with implants in calves are encouraging. In this device, a roller-screw mechanism is used to translate the rotation of a brushless direct-current motor into rectilinear motion of a pusher-plate assembly, which in turn empties the blood sacs. The total artificial heart of the future will function under automatic control without percutaneous leads, and this should provide the patient with a nearly normal life-style. Although further experimental efforts are necessary to prepare the device for clinical trials, the technology to provide a safe and reliable electric blood-pump system is at hand.
气动全人工心脏虽然作为临时机械循环支持装置显示出了实用性，但作为永久性心脏替代物却没有展现出太大的前景。适合进行全心脏置换的患者数量不断增加，这表明永久性可植入全人工心脏将发挥重要作用。为此，宾夕法尼亚州立大学正在研发一种电动全人工心脏；在小牛身上的植入结果令人鼓舞。在这种装置中，采用了滚柱丝杠机构将无刷直流电机的旋转转化为推板组件的直线运动，进而排空血囊。未来的全人工心脏将在无需经皮导线的自动控制下运行，这将为患者提供近乎正常的生活方式。尽管还需要进一步的实验努力才能使该装置准备好进行临床试验，但提供安全可靠的电动血泵系统的技术已经具备。
