| 摘要 |
<p>This invention is a device for use as a prop to hold the mouth open which consists essentially of a bite block with an elongated portion (3a) that is deflected to provide a turn of about 180 degrees so that the elongated portion (3a) extends around the outside of the cheek with the end of the extension pointing backward from the mouth to form a handle by which the bite block is held in position.</p> |
