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Measurement of compliance of infusion device consumable elements using an analytical weighing balance

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Clarkson, Douglas McG. and Barbosa, Romain (2014) Measurement of compliance of infusion device consumable elements using an analytical weighing balance. Medical Engineering & Physics, Volume 36 (Number 11). pp. 1502-1507. doi:10.1016/j.medengphy.2014.07.016

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Official URL: http://dx.doi.org/10.1016/j.medengphy.2014.07.016

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Abstract

The value of compliance of disposable elements such as infusion lines and syringes can significantly affect the performance characteristics of infusion devices. In a technique used to determine the compliance of infusion lines, the item under test is placed in a semi sealed water filled enclosure and the volume of fluid displaced is measured on an analytical weighing balance as set pressures are applied to the test item. Thermal drift of the measurement chamber was minimised by inclusion of discs of Invar alloy. Measurements were also made to determine the compliance of syringes used with syringe drivers where the volume of fluid displaced upon release of established pressure levels within a syringe was measured using a separate measurement configuration using again an analytical weighing balance. These techniques were used to determine the relative contributions to compliance of infusion lines and syringes to the dynamics of operation of syringe drivers. This indicated that contributions to compliance from syringes were significantly greater than that of connected infusion lines. Values of time to occlude, occlusion bolus and effects of height elevation for infusion devices with elements of varying compliance and line configuration are discussed.

Item Type: Journal Article
Divisions: Faculty of Science > Computer Science
Journal or Publication Title: Medical Engineering & Physics
Publisher: Elsevier Ltd.
ISSN: 13504533
Official Date: 20 August 2014
Dates:
DateEvent
20 August 2014Published
28 July 2014Accepted
1 April 2014Submitted
Volume: Volume 36
Number: Number 11
Page Range: pp. 1502-1507
DOI: 10.1016/j.medengphy.2014.07.016
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Embodied As: 1

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