Development of Artificial Heart Actuator using Linear Motor

使用直线电机的人工心脏执行器的开发

• 批准号: 58890003
• 负责人: YAMADA Hajime
• 金额: $ 15.36万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1983
• 资助国家: 日本
• 起止时间: 1983 至 1985
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-58890003/
• 关键词: Linear motor; Linear pulse motor; Artificial heart; 人工心臓

New two actuators using flat type and cylindrical linear pulse motors were proposed in this research. A portable artificial heart driver has been developed using a flat type linear pulse motor. This driver is designed for total artificial heart implantation , but it is also applicable to left-, right-, and bi-ventricular assisting artificial hearts.Two polyurethane cylinders are placed at both ends of a mover of the linear motor, which generate compressed air and vacuum alternately to make systole and diastole for left and right artificial hearts at the same time in alternate phase.In-vitro tests were performed using a Donovan type mock circulatory system with a pair of diaphragm type artificial hearts of 140 milliliters designed for implantation in a calf.The experiment using this portable artificial heart driver to a calf was carried out successfully.A total artificial heart driver has also developed using a cylindrical linear pulse motor. The principle of operation of this driver is same as above motor. The driver is completely noiseless in its driving and has good manupulation. The driver has a simple configuration and can control the thrust by changing the exciting current. The heart rate can be controlled from 90 to 156 beats per minute for stroke 25 millimeters with high accuracy.

本研究提出了两种使用扁平型和圆柱形线性脉冲电机的新型执行器。使用扁平型线性脉冲电机开发了便携式人工心脏驱动器。该驱动器专为全人工心脏植入而设计，但也适用于左、右、双心室辅助人工心脏。直线电机动子两端放置两个聚氨酯气缸，交替产生压缩空气和真空，使左、右人工心脏同时交替相位收缩和舒张。体外试验采用Donovan型 模拟循环系统具有一对140毫升的隔膜式人工心脏，设计用于植入小腿。使用这种便携式人工心脏驱动器对小腿进行的实验已成功进行。还开发了使用圆柱形线性脉冲电机的全人工心脏驱动器。该驱动器的工作原理与上述电机相同。驾驶员行驶时完全无噪音，操控性良好。该驱动器结构简单，可通过改变励磁电流来控制推力。对于25毫米的行程，心率可以高精度地控制在每分钟90至156次之间。