Artificial heart control device, artificial heart system and artificial heart control method

Abstract

Provided is an artificial heart control device for controlling a blood pump which assists flow of blood in a heart, the artificial heart control device including: a timing detection part which is configured to detect reference timing within a cardiac cycle of the heart; and a blood pump control part which is configured to control a rotational speed of the blood pump, wherein the blood pump control part controls, with reference to the reference timing detected by the timing detection part, the rotational speed of the blood pump such that the rotational speed becomes a rotational speed corresponding to a predetermined control pattern. According to the present invention, it is possible to provide an artificial heart control device, an artificial heart system and an artificial heart control method which can provide a load control optimum for the recovery of functions of a patient's own heart.

1 . An artificial heart control method for controlling a blood pump which assists flow of blood in a heart, the artificial heart control method comprising:
 a timing detection step in which reference timing within a cardiac cycle of the heart is detected; and   a blood pump control step in which a rotational speed of the blood pump is controlled with reference to the reference timing detected in the timing detection step such that the rotational speed becomes a rotational speed corresponding to a predetermined control pattern, wherein
 the artificial heart control method further comprises an abnormality detection step in which an abnormal state when the blood pump is being controlled is detected, and 
   in the blood pump control step, the rotational speed of the blood pump is controlled such that the rotational speed becomes a predetermined rotational speed when the abnormal state is detected in the abnormality detection step.   
     
     
         2 . The artificial heart control method according to  claim 1 , wherein the reference timing is start timing of systole within the cardiac cycle. 
     
     
         3 . The artificial heart control method according to  claim 1 , wherein the reference timing is start timing of diastole within the cardiac cycle. 
     
     
         4 . The artificial heart control method according to  claim 1 , wherein, in the blood pump control step, the rotational speed of the blood pump is controlled with reference to the reference timing such that a blood flow in a ventricle of the heart changes. 
     
     
         5 . The artificial heart control method according to  claim 1 , wherein, in the blood pump control step, a control in which the rotational speed of the blood pump is changed in accordance with a predetermined cyclic function within one or a plurality of cardiac cycles of the heart is performed with reference to the reference timing. 
     
     
         6 . The artificial heart control method according to  claim 1 , wherein, in the blood pump control step, the rotational speed of the blood pump is controlled, with reference to the reference timing, such that the rotational speed of the blood pump is lowered in diastole of the heart, and the rotational speed of the blood pump is increased in systole of the heart. 
     
     
         7 . The artificial heart control method according to  claim 1 , wherein in the blood pump control step, the rotational speed of the blood pump is controlled with reference to the reference timing such that an output flow rate of the blood pump becomes 0 in systole of the heart, and a reverse flow rate of the blood pump becomes 0 in diastole of the heart. 
     
     
         8 . The artificial heart control method according to  claim 1 , wherein the artificial heart control method further comprises a control pattern decision step in which the control pattern is decided based on a detection signal from a sensor which detects a state of a human body when the blood pump is being operated, and
 in the blood pump control step, the rotational speed of the blood pump is controlled with reference to the reference timing detected in the timing detection step such that the rotational speed becomes a rotational speed corresponding to the control pattern decided in the control pattern decision step.