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. 2018 Oct;59(10):1112-1114.

Assessing the Sharpness of Hypodermic Needles After Repeated Use

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Free PMC article

Assessing the Sharpness of Hypodermic Needles After Repeated Use

Kadin Majcher et al. Can Vet J. .
Free PMC article

Abstract

Four gauges (14G, 16G, 18G, 20G) of single use hypodermic needles were evaluated for sharpness by measuring the force required to puncture rehydrated bovine leather. The needles began to dull after 1 use with maximum bluntness occurring within 4 to 5 uses.

Évaluation du tranchant des aiguilles hypodermiques après un usage répété. Quatre gabarits (14G, 16G, 18G, 20G) d’aiguilles hypodermiques à usage unique ont été évalués pour le tranchant en mesurant la force requise pour percer du cuir bovin réhydraté. Les aiguilles ont commencé à s’émousser après 1 usage et la capacité de tranchant maximale se produisait durant les 4 ou 5 premières utilisations.(Traduit par Isabelle Vallières).

Figures

Figure 1
Figure 1
Each bovine leather sample was fixed to the MTS Bionix testing system by clamping the sample between 2 aluminum plates. The test needle moved axially, penetrating the leather at a perpendicular angle.
Figure 2
Figure 2
Mean peak penetration force (Newtons) plots for 4 single use hypodermic needles. The asterisk (*) represents the point at which the mean force required to penetrate the leather was not different (P < 0.05) from force required for the preceding penetration.

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