Table 1.

Main commercially available SGAs divided into the devices without and with aspiration protection mechanism and according to the sealing mechanism [4], (I)—may be used as a conduit for an insertion of tracheal tube. LTS-D: Laryngeal Tube Suction device, PLA: perilaryngeal airway, LMA: laryngeal mask airway, LM: laryngeal mask, ILA: intubating laryngeal airway, and SLIPA: Streamlined Liner of Pharyngeal Airway. SALT: Supraglottic Airway Laryngopharyngeal Tube.

Aspiration protection	Base-of-tongue (BT) sealers	Perilaryngeal (PL) sealers
None (1st generation)	VBM Laryngeal Tube (VBM, Germany) King Laryngeal Tube (King System, USA) Cobra PLA (Pulmodyne, USA) Cobra Plus (Pulmodyne, USA)	LMA Classic (LMA Co., Seychelles) LMA Unique (LMA Co., Seychelles) LMA Flexible (LMA Co., Seychelles) LMA Classic Excel (I) (LMA Co., Seychelles) AuraOnce LM (Ambu, Denmark) Aura-i LM (I) (Ambu, Denmark) Portex Soft Seal (Smith Med., UK) Solus LM (Intersurgical, UK) Sheridan LM (Teleflex, USA) La Premiere Plus LM, LaEncore Plus LM (Armstrong Medical, UK) Vital Seal LM (GE Healthcare, USA) Ultra CPV (AES, USA) Intubating LMA, Fastrach (I) (LMA Co., Seychelles) CTrach LMA (I) (LMA Co., Singapore) Air-Q ILA (I) (Mercury Medical, USA)
Gastric channel or storage container (2nd generation)	Combitube (Covidien, USA) Rusch Easy Tube (Teleflex, USA) VBM LTS II (VBM, Germany) King LTS-D (King System, USA) SLIPA (CurveAir, UK) SALT (I) (Ecolab, USA)	LMA ProSeal (LMA Co., Seychelles) LMA Supreme (LMA Co., Seychelles) i-gel (I) (Intersurgical, UK) Aura Gain LM (I) (Ambu, Denmark) Guardian LMA (Ultimate Medical, Australia)
Gastric channel + self-energizing mechanism of seal		Baska mask (I) (Logikal Health Products, Australia) 3gLM (I) (CurveAir, UK)