Resistance of protective gloves materials to puncture by medical needles

    Volume 7, Issue 5 (May 2010)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 14 May 2010

    Page Count: 16


    Nguyen, C. Thang
    Faculté de Génie, Univ. de Sherbrooke, Sherbrooke, QC

    Dolez, Patricia I.
    École de Technologie Supérieure, Montréal, QC

    Vu-Khanh, Toan
    École de Technologie Supérieure, Montréal, QC

    Gauvin, Chantal
    Institut de Recherche Robert-Sauvé en Santé et en Sécurité du Travail, Montréal, QC

    Lara, Jaime
    Institut de Recherche Robert-Sauvé en Santé et en Sécurité du Travail, Montréal, QC

    (Received 14 December 2009; accepted 26 March 2010)

    Abstract

    The accidental injury by medical needles, even when wearing personal protective clothing, is a growing concern for an increasing number of workers. Therefore, an effort has been undertaken to study the interaction of medical needles with materials relevant to protective gloves. A first phase of the project had investigated the influence of needle characteristics on the resistance to puncture by medical needles of selected materials relevant to protective gloves. A step-by-step analysis of the mechanism of puncture by medical needles was proposed. This second paper studies the effect of sample thickness and test conditions on the resistance to needle puncture of various types of materials relevant to protective gloves. For elastomers and fabric-reinforced elastomers, the influence of the sample thickness and needle penetration angle can be described using the principles of fracture mechanics; the non-linear relationship between puncture force and sample thickness is attributed to the elliptical shape of the fracture surface, and the effect of the needle penetration angle on puncture force is reduced to a master curve when expressed in terms of the effective sample penetration thickness. On the other hand, more textile-based materials behave as discrete media. The study of the effect of probe displacement rate and temperature seems to indicate that the needle puncture process in all studied materials is of viscoelastic nature. It was also observed that the time-temperature superposition principle applies to neoprene resistance to medical needles. These results set the basis for the design of a test method relative to the resistance of materials to medical needles. It also provides information for the development of protective gloves with improved resistance to needlesticks.


    Paper ID: JAI102923

    DOI: 10.1520/JAI102923

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    Author
    Title Resistance of protective gloves materials to puncture by medical needles
    Symposium , 0000-00-00
    Committee F23