Q: What is a nasal rinsing device and how does it work? | 什麼是鼻腔清洗器？它如何工作？A: A nasal rinsing device is a medical tool that uses saline solution (salt water) to gently clean the nasal cavity. The device delivers isotonic saline solution into one nostril, which flows through the nasal passages and sinuses, then exits from the other nostril or mouth, carrying away bacteria, dust, pollen, and other allergens. This simple yet effective physical cleaning method helps restore nasal moisture and improves nasal airway function.鼻腔清洗器是一種醫療工具，使用生理食鹽水（鹽水）輕輕清潔鼻腔。該設備將等張生理食鹽水導入一個鼻孔，流經鼻腔和鼻竇，然後從另一個鼻孔或嘴巴流出，帶走細菌、灰塵、花粉和其他過敏原。這種簡單而有效的物理清潔方法有助於恢復鼻腔濕潤度並改善鼻腔氣流功能。
