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Particle Spallation Induced by Blood Pumps in Hemodialysis Tubing Sets
Author(s) -
Barron David,
Harbottle Sarah,
Hoenich Nicholas A.,
Morley Adrian R.,
Appleton David,
McCabe John F.
Publication year - 1986
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1986.tb02551.x
Subject(s) - peristaltic pump , silicone rubber , materials science , abrasion (mechanical) , composite material , polyvinyl chloride , elastomer , natural rubber , particle (ecology) , centrifugal pump , silicone , biomedical engineering , mechanical engineering , medicine , oceanography , engineering , geology , impeller
The repeated flexion and compression of pump segments by the rollers of peristaltic pumps results in cracking and abrasion of the inner surfaces of the pump segment, leading to shedding of particles into the extra‐corporeal circuit. A series of studies to assess the rate of particle release from silicone rubber, polyvinyl chloride (PVC), and Pivipol, a coextruded polyurethane‐coated PVC tubing, when these materials were used with blood pumps of the type found in hemodialysis units, was un dertaken. The studies show that with all tubing/pump combinations there is an overall increase in the total number of particles released, but an analysis of the par tide size distribution indicates that the majority of the particles are < 16 μm in diameter. The rate of increase may be reduced, however, by decreasing the occlusion pressure.