NDLI: Rotary blood pump

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Rotary blood pump

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1996
Description	A rotary blood pump includes a pump housing for receiving a flow straightener, a rotor mounted on rotor bearings and having an inducer portion and an impeller portion, and a diffuser. The entrance angle, outlet angle, axial and radial clearances of blades associated with the flow straightener, inducer portion, impeller portion and diffuser are optimized to minimize hemolysis while maintaining pump efficiency. The rotor bearing includes a bearing chamber that is filled with cross-linked blood or other bio-compatible material. A back emf integrated circuit regulates rotor operation and a microcomputer may be used to control one or more back emf integrated circuits. A plurality of magnets are disposed in each of a plurality of impeller blades with a small air gap. A stator may be axially adjusted on the pump housing to absorb bearing load and maximize pump efficiency.
File Size	1692036
Page Count	21
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19970017534
Archival Resource Key	ark:/13960/t2b906c0z
Language	English
Publisher Date	1996-06-18
Access Restriction	Open
Subject Keyword	Mechanical Engineering Hemolysis Patents Bearings Rotors Microcomputers Magnets Blood Pumps Blood Integrated Circuits Impellers Diffusers Axial Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Patent

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