| 摘要 |
<p>A rigid block possessing an elongate rod of malleable material extending from it to prevent it bing swallowed, whose end possesses endotracheal tube or mask attaching means <I>i.e.</I> a clip. Alternatively the block has a hook shaped retaining portion for engaging the patients cheek. The block, which may be tapered to fit between teeth on one side of the mouth, possesses tooth engagement surfaces on opposite sides which may be channels and possess surfaces made from resilient elastomer, a single piece of which may form the whole block. The blocks' diameter may vary in the transverse or orthogonal directions so jaw separation may be altered by twisting the block. The block may possess a hollow core formed by a passage extending into it from the widest end and may possess a pressure sensor moulded into it which may be a pneumatic pressure gauge or a piezo-electric transducer.</p> |
