| 摘要 |
<p>A sternum retractor for use in open-heart and other thoracic surgery having a generally Ushaped frame formed from an arm support, a stationary arm and a movable arm. The movable arm is secured to a carriage having a rotatable pinion which effects movement of the arm by mating with a rack that is integral with the arm support. Inwardly facing blade supports are pivotally attached at a single selected location along the length of each arm and a plurality of retractor blades are secured in spaced relation on each of the blade supports. The blade supports and retractor blades are preferably formed from a radiotransparent plastic material.</p> |
