The study has to show that an intubation with the AuraGain Laryngeal mask could bring the same benefits in terms of intubation in clinical practice, as the slotted Guedel tubus.

Inclusion Criteria:

• Aged ≥18
• ASA 1 -2
• Surgery of the shoulder, elbow, hand, hip, knee or foot
• Signed consent form

Exclusion Criteria:

• Patients with expected difficulties regarding to the intubation
• Patients with diseases / anatomical changes in the area of the pharynx, the larynx, the trachea, the esophagus or the stomach
• Not sober
• Increased risk of aspiration
• BMI > 35 kg/m2
• Acute disease which could affect the suitability of the anesthesia
• Patients in which the use of a laryngeal mask is contraindicated or otherwise not possible
• Patients with a disease which prevents an accurate examination of the patients (eg neuromuscular, mentally, metabolic disease)
• Drug abuse in the recent past
• Legal incompetence