| 摘要 |
Blood pump apparatus comprising a pump housing 13, a drive chamber 18, a compressible blood chamber 20 and a drive mechanism including a pumping arm 33 and a movable plate 28. Bellows 38 hermetically seal an end of the drive chamber to prevent ingress of bodily fluids. The drive mechanism may include a motor (56) for rotating an eccentric shaft 47. In use, the motor rotates a cam such as roller bearing 52 causing the pumping arm 33 to pivot which cycles the movable plate 28 against chamber 20 to pump blood. The movable plate may be placed adjacent a lung such that the lung moves with plate 28, thus eliminating the need for a separate compliance chamber. The apparatus may be provided with other features such as a speed reducer (70) , a tissue. friendly enclosure (105) and a sensor 33 for determining the volume of blood in chamber 28. |
