| 摘要 |
PURPOSE: To obtain an easily usable and safe catherter/pump unit by providing a pumping means and a protective means placed at the tip part of a catheter, and a driving means connected with the pumping means. CONSTITUTION: The unit 20 is placed in an aorta 22, composed so as to conduct pumping action of blood through a blood vessel, set with a catheter with a pumping means 24 placed at the tip part 26, and rotated with a driving means 32. The tip part of the catheter has a protective means and is separated from the aorta 22 part of the upstream side of the pump and the aorta part on the downstream side of the pump except the cup-form member 38 from the inlet to the outlet of the pump itself. Thus, when the pump is operated in a relatively high speed, a pressure higher than on the upstream side in aorta on the downstream side of the barrier is generated, and blood is sucked from a heart 56 through an aortic valve 28 into the inlet 40 of the pump, then proceeds to the rest parts of the blood vessel system.
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