The "Leigh valve" is a medical device used in respiratory therapy, particularly in the treatment of patients with neuromuscular diseases such as amyotrophic lateral sclerosis (ALS) or muscular dystrophy. It is a type of one-way valve that is inserted into a tracheostomy tube or placed over an endotracheal tube. The Leigh valve allows air to flow into the patient's airway during inhalation but prevents air from escaping during exhalation. This helps patients with weakened respiratory muscles to effectively cough and clear their airways, improving ventilation and reducing the risk of complications such as pneumonia.

The "Leigh valve" is a medical device used in respiratory therapy, particularly in the treatment of patients with neuromuscular diseases such as amyotrophic lateral sclerosis (ALS) or muscular dystrophy. It is a type of one-way valve that is inserted into a tracheostomy tube or placed over an endotracheal tube. The Leigh valve allows air to flow into the patient's airway during inhalation but prevents air from escaping during exhalation. This helps patients with weakened respiratory muscles to effectively cough and clear their airways, improving ventilation and reducing the risk of complications such as pneumonia.