A mechanical device with adjustable parts intended to be placed between the teeth of the upper and lower jaws of a patient to maintain an open oral cavity, typically during emergent placement of an artificial airway or for an oral/dental surgical interventi...
A self-locking, multi-pivoted, surgical instrument used for drawing aside the margins of a thoracic incision to permit examination or surgical intervention within the thoracic cavity. It will typically have two interchangeable, pivoted, broad and curved bla...