Turbo type blood pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 19, 2013
Grant Date -
Dec 31, 2009
app pub date -
Jan 24, 2008
filing date -
Jan 30, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An impeller 22 includes a rotating shaft 7 supported rotatably by an upper bearing 9 and a lower bearing 20 at upper and lower ends, a plurality of vanes 6, an arm 18 coupling an inner circumferential side of the vanes to the rotating shaft, an annular coupling portion 8 coupled to an outer circumferential side of each vane, and a driven magnet portion 12 placed in a lower portion of the annular coupling portion. A drive magnet portion 16 provided at a rotor 13 and a driven magnet portion 12 are opposed to each other with a bottom wall of the housing interposed therebetween, and rotation of the rotor is transmitted to the impeller through magnetic coupling. A blockade member 23 is placed below the vanes and blocks a space in a region spreading between the rotating shaft and the annular coupling portion while leaving an opening 14 at least around the rotating shaft. In a configuration in which the rotating shaft of the impeller is supported by the upper and lower bearings and a lower portion of each outer circumferential edge of the vanes is coupled to the annular coupling portion, the formation of a blood clot in the vicinity of the lower bearing can be suppressed.
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