Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Patent
1993-11-10
1996-06-18
Bertch, Richard A.
Pumps
Condition responsive control of pump drive motor
By control of electric or magnetic drive motor
417244, 417366, 417356, 41742312, 4174235, 415900, 416176, 416177, I04B 4906, I04B 300
Patent
active
055271596
ABSTRACT:
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.
REFERENCES:
patent: 4135253 (1979-01-01), Reich et al.
patent: 4169990 (1979-10-01), Lerdman
patent: 4382199 (1983-05-01), Isaacson
patent: 4397049 (1983-08-01), Robinson et al.
patent: 4403177 (1983-09-01), Weber et al.
patent: 4507048 (1985-03-01), Belenger et al.
patent: 4546293 (1985-10-01), Peterson et al.
patent: 4625712 (1986-12-01), Wampler
patent: 4662358 (1987-05-01), Farrar et al.
patent: 4688998 (1987-08-01), Olsen et al.
patent: 4712648 (1987-12-01), Mattes et al.
patent: 4763032 (1988-08-01), Bramm et al.
patent: 4779614 (1988-10-01), Moise
patent: 4817586 (1989-04-01), Wampler
patent: 4846152 (1989-07-01), Wampler et al.
patent: 4908012 (1990-03-01), Moise et al.
patent: 4944722 (1990-07-01), Carriker et al.
patent: 4944748 (1990-07-01), Bramm et al.
patent: 4957504 (1990-09-01), Chardack
patent: 4984972 (1991-01-01), Clausen et al.
patent: 4994078 (1991-02-01), Jarvik
patent: 5040944 (1991-08-01), Cook
patent: 5049134 (1991-09-01), Golding et al.
patent: 5055005 (1991-10-01), Kletschka
patent: 5112292 (1992-05-01), Hwang et al.
patent: 5135483 (1992-08-01), Wagner et al.
patent: 5174726 (1992-12-01), Findlay
patent: 5205721 (1992-04-01), Isaacson
patent: 5209650 (1993-05-01), Lemieux
patent: 5258696 (1993-11-01), Le
patent: 5321342 (1994-06-01), Kruse
patent: 5360317 (1994-11-01), Clausen et al.
patent: 5368438 (1994-11-01), Raible
patent: 5370509 (1994-12-01), Golding et al.
Aber Gregory S.
Akkerman James W.
Bacak James W.
Benkowski Robert J.
Bozeman, Jr. Richard J.
Barr Hardie R.
Bertch Richard A.
Thai Xuan M.
The United States of America as represented by the Administrator
LandOfFree
Rotary blood pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary blood pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary blood pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-218618