NDLI: Improvement of hemocompatibility for hydrodynamic levitation centrifugal pump by optimizing step bearings

Content Provider	IEEE Xplore Digital Library
Author	Kosaka, R. Yada, T. Nishida, M. Maruyama, O. Yamane, T.
Copyright Year	2011
Description	Author affiliation: Tokyo University of Science (TUS), Noda, Chiba 278-8510, Japan (Yada, T.) \|\| National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1, Namiki, Tsukuba, Ibaraki, 305-8564, Japan (Kosaka, R.; Nishida, M.; Maruyama, O.; Yamane, T.)
Abstract	We have developed a hydrodynamic levitation centrifugal blood pump with a semi-open impeller for a mechanically circulatory assist. The impeller levitated with original hydrodynamic bearings without any complicated control and sensors. However, narrow bearing gap has the potential for causing hemolysis. The purpose of the study is to investigate the geometric configuration of the hydrodynamic step bearing to minimize hemolysis by expansion of the bearing gap. Firstly, we performed the numerical analysis of the step bearing based on Reynolds equation, and measured the actual hydrodynamic force of the step bearing. Secondly, the bearing gap measurement test and the hemolysis test were performed to the blood pumps, whose step length were 0 %, 33 % and 67 % of the vane length respectively. As a result, in the numerical analysis, the hydrodynamic force was the largest, when the step bearing was around 70 %. In the actual evaluation tests, the blood pump having step 67 % obtained the maximum bearing gap, and was able to improve the hemolysis, compared to those having step 0% and 33%. We confirmed that the numerical analysis of the step bearing worked effectively, and the blood pump having step 67 % was suitable configuration to minimize hemolysis, because it realized the largest bearing gap.
Starting Page	1331
Ending Page	1334
File Size	1240222
Page Count	4
File Format	PDF
ISBN	9781424441211
ISSN	1557170X
e-ISBN	9781457715891
e-ISBN	9781424441228
DOI	10.1109/IEMBS.2011.6090313
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hydrodynamics Blood Force Impellers Numerical analysis Force measurement Levitation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Improvement of Hemolysis in a Centrifugal Blood Pump with Hydrodynamic Bearings and Semi-Open Impeller

Fluid dynamic design for low hemolysis in a hydrodynamically levitated centrifugal blood pump

Evaluation of erythrocyte flow at a bearing gap in a hydrodynamically levitated centrifugal blood pump

Bearing gap adjustment for improvement of levitation performance in a hydrodynamically levitated centrifugal blood pump

Pulsatile driving of the helical flow pump

Development of a portable bridge-to-decision blood pump

The helical flow total artificial heart: Implantation in goats

Template for preparation of papers for IEEE sponsored conferences & Symposia

Effect of impeller flow path on pump performance and impeller stability of the monopivot circulatory pump

Improvement of hemocompatibility for hydrodynamic levitation centrifugal pump by optimizing step bearings

Similar Documents

Improvement of Hemolysis in a Centrifugal Blood Pump with Hydrodynamic Bearings and Semi-Open Impeller

Fluid dynamic design for low hemolysis in a hydrodynamically levitated centrifugal blood pump

Evaluation of erythrocyte flow at a bearing gap in a hydrodynamically levitated centrifugal blood pump

Bearing gap adjustment for improvement of levitation performance in a hydrodynamically levitated centrifugal blood pump

Pulsatile driving of the helical flow pump

Development of a portable bridge-to-decision blood pump

The helical flow total artificial heart: Implantation in goats

Template for preparation of papers for IEEE sponsored conferences & Symposia

Effect of impeller flow path on pump performance and impeller stability of the monopivot circulatory pump

Improvement of hemocompatibility for hydrodynamic levitation centrifugal pump by optimizing step bearings