公开(公告)号：US5232434A

公开(公告)日：1993-08-03

申请号：US772657

申请日：1991-10-07

申请人： Yoshitaka Inagaki ,  Rika Fujita ,  Hiroyuki Takagi

发明人： Yoshitaka Inagaki ,  Rika Fujita ,  Hiroyuki Takagi

IPC分类号： A61M1/10

CPC分类号： A61M1/1086 ,  A61M1/106 ,  A61M1/1065 ,  A61M1/1037

摘要： A pump unit for assisting in the blood feeding operation of a heart includes a pair of pumps 7a, 7b connected in parallel with each other. When the pump 7a (or 7b) has reached its expanded position and the pump 7b (or 7a) has reached its contracted position, the operation is changed so that the pump 7a (or 7b) is set up for contraction while the pump 7b (or 7a) is set up for expansion. A time difference TCM between the time when the expanded position is reached and the time when the contracted position is reached is determined. If TCM>Tr, a driving pressure for contraction is changed to a higher value while if TCM

摘要翻译： 用于辅助心脏进血操作的泵单元包括彼此并联连接的一对泵7a，7b。 当泵7a（或7b）已经达到其膨胀位置并且泵7b（或7a）已经达到其收缩位置时，改变操作，使得泵7a（或7b）被设置为用于收缩而泵7b（ 或7a）设置用于扩展。 确定达到扩展位置的时间与达到收缩位置的时间之间的时差TCM。 如果TCM> Tr，则用于收缩的驱动压力变为较高值，而如果TCM