upper and lower tracheostomy. tracheal surgery.

airway airway obstruction anatomy body bougie bronchi cartilage design diagram digestive doctor flat graphic head thrown back health human hyoid icon illustration intubation larynx lower tracheostomy luer cannula medical neck neck surgery parathyroid gland plastic procedure scalpel science throat throat thyroid tracheal dissection lumen tracheostomy hook scheme tracheotomy tracheotomy retractor treatment tube upper vector vocal cords windpipe