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A new laryngeal mask supraglottic airway device with integrated balloon line: a descriptive and comparative bench study

Authors Zhou YH, Jew K

Received 6 May 2016

Accepted for publication 26 July 2016

Published 2 November 2016 Volume 2016:9 Pages 383—388


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Scott Fraser

YingHai Zhou,1 Korinne Jew2

1Research & Development, Patient Monitoring & Recovery, Medtronic Technology Center, Shanghai, People’s Republic of China; 2Medical Affairs, Minimally Invasive Therapies Group, Medtronic, Boulder, CO, USA

Laryngeal masks are invasive devices for airway management placed in the supraglottic position. The Shiley™ laryngeal mask (Shiley™ LM) features an integrated inflation tube and airway shaft to facilitate product insertion and reduce the chance of tube occlusion when patients bite down. This study compared the Shiley LM to two other disposable laryngeal mask devices, the Ambu® AuraStraight™ and the LMA Unique™. Overall device design, tensile strength, flexibility of various structures, and sealing performance were measured. The Shiley LM is structurally stronger and its shaft is more resistant to compression than the other devices. The Shiley LM is generally less flexible than the other devices, but this relationship varies with device size. Sealing performance of the devices was similar in a bench assay. The results of this bench study demonstrate that the new Shiley LM resembles other commercially available laryngeal mask devices, though it exhibits greater tensile strength and lower flexibility.

Keywords: laryngeal mask, supraglottic airway, supralaryngeal device

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