Document Detail

The need of slanted side holes for venous cannulae.
MedLine Citation:
PMID:  22291856     Owner:  NLM     Status:  MEDLINE    
Well-designed cannulae must allow good flow rate and minimize nonphysiologic load. Venous cannulae generally have side holes to prevent the rupture of blood vessel during perfusion. Optimizing side hole angle will yield more efficient and safe venous cannulae. A numerical modeling was used to study the effect of the angle (0°-45°) and number (0-12) of side holes on the performance of cannulae. By only slanting the side holes, it increases the flow rate up to 6% (in our models). In addition, it was found that increasing the number of side holes reduces the shear rate up to 12% (in our models). A new parameter called "penetration depth" was introduced to describe the interfering effect of stream jets from side holes, and the result showed that the 45°-slanted side holes caused minimum interfering for the flow in cannula. Our quantitative hemodynamic analysis study provides important guidelines for venous cannulae design.
Joong Yull Park
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-01-12
Journal Detail:
Title:  Computational and mathematical methods in medicine     Volume:  2012     ISSN:  1748-6718     ISO Abbreviation:  Comput Math Methods Med     Publication Date:  2012  
Date Detail:
Created Date:  2012-01-31     Completed Date:  2012-05-21     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  101277751     Medline TA:  Comput Math Methods Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  854938     Citation Subset:  IM    
School of Mechanical Engineering, College of Engineering, Chung-Ang University, Seoul, Republic of Korea.
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MeSH Terms
Equipment Design*
Numerical Analysis, Computer-Assisted

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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