Intracardiac blood pump

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/10 (2006.01) A61M 1/12 (2006.01) H02K 5/08 (2006.01) H02K 5/124 (2006.01) H02K 5/128 (2006.01) H02K 5/132 (2006.01) H02K 15/14 (2006.01) H02K 49/10 (2006.01) H02K 7/14 (2006.01) H02K 11/00 (2006.01) H02K 15/02 (2006.01) H02K 21/14 (2006.01) H02K 29/00 (2006.01)

Patent

CA 2256427

The invention relates to a blood pump which has a drive part (11) and a pump part (12), said pump part being extended by means of a flexible hose (13). Pressure sensors (60, 61) detect the pressure difference between the inlet end and the outlet end of the pump. The volume flow can then be determined from the pressure difference in conjunction with the rotational speed. The pressure difference can also be used to determine the correct position of the pump in the heart. Alternatively, the current consumed by the motor (21) is measured and the volume flow of the pump is calculated from this current consumption measurement, taking into account the known rotational speed. The signal of the pressure measurement device or the motor current can be used to determine the correct position of the pump in the heart.

Pompe à sang présentant un élément d'entraînement (11) et un élément (12) prolongé par un tuyau souple (13). Des détecteurs de pression (60, 61) déterminent la différence de pression entre l'entrée et la sortie de la pompe. A partir de la différence de pression, le débit volumique peut être déterminé, en liaison avec la vitesse de rotation. La différence de pression peut en outre être utilisée pour déterminer le positionnement correct de la pompe dans le coeur. En variante à la mesure de la différence de pression, on mesure le courant absorbé par le moteur (21), ce qui permet de calculer le débit volumique de la pompe, compte tenu de la vitesse de rotation connue. Le signal du dispositif de mesure de pression ou du courant du moteur peut être utilisé pour établir le positionnement correct de la pompe dans le coeur.

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