Trends of 'sprain'. Translations for 'sprain'. A sprain is the injury caused by spraining a joint.He suffered a right ankle sprain. If you sprain your ankle or wrist, you accidentally damage it by twisting it, for example, when you fall.He fell and sprained his ankle.
The obturator is used to insert a tracheostomy tube. It fits inside the tube to provide a smooth surface that guides the tracheostomy tube when it is being inserted. There are different types of tracheostomy tubes available and the patient should be given the tube that best suits his/her needs.
The combination of the distal ends of the obturator and the outer cannula form a relatively smooth surface that allows comfortable insertion of the tracheostomy tube into the trachea opening. Preferably, the distal end of the obturator is a bullet-like shaped structure that mates with the wall of the outer cannula.