The Efficacy and Safety of the COMBO Endoscopy Oropharyngeal Airway in Gastrointestinal Endoscopy Procedure

This study evaluates a special type of airway device called a COMBO oropharyngeal airway that helps keep patients breathing safely during sedated endoscopy (camera examination of the stomach or colon). Researchers want to know if it is safe and effective. **You may be eligible if...** - You are between 18 and 60 years old - You are scheduled for a stomach or colon endoscopy procedure lasting under 45 minutes - You have a BMI between 18.5 and 30 - Your blood oxygen level is 95% or above while breathing room air - You have low-to-moderate anesthesia risk (ASA class I-II) **You may NOT be eligible if...** - You have bleeding problems, oral/nasal bleeding tendency, or anatomical issues that prevent airway device placement - You have severe heart, kidney, or liver disease - You have COPD or other significant lung conditions requiring extra oxygen - You have elevated pressure in the skull - You have an active respiratory infection, fever, or are pregnant or breastfeeding - You have a history of substance abuse (drugs or alcohol) in the past 2 years - You have significant mental health or neurological conditions (Parkinson's, epilepsy, schizophrenia, etc.) Talk to your doctor to see if this trial is right for you.