Patent ID: 6824358
Filing Date: 2004-11-30
Classification: A61M,F01D,F04D

Abstract:
A turbo blood pump, comprisinga housing having an inlet port and an outlet port; and an impeller disposed rotatably in the housing; wherein the impeller comprises at least a rotation shaft, plural vanes and an annular connection portion, the plural vanes are connected to the annular connection portion in a part at the side of the outlet port, and at least some of the plural vanes are connected to the rotation shaft by a supporting member in a part at the side of the inlet port; a vane inlet side line of the plural vanes, which connects an inlet side upper end and an inlet side lower end of the plural vanes, is in a skew position with respect to the rotation shaft and a vane outlet side line of the plural vanes, which connects an outlet side upper end and an outlet side lower end of the plural vanes; and an angle made by the vane inlet side line and an axis intersecting the vane inlet side line and parallel to the rotation shaft is set to be larger than an angle made by the vane outlet side line and an axis intersecting the vane outlet side line and parallel to the rotation shaft.