| 摘要 |
<p>A retractor instrument assembly having a sleeve (52) with a non-circular cross-sectional shape, an elongated rod (12) slidably received within the sleeve, and a plurality of blades (16) foldably connected together at an end of the elongated rod. The elongated rod has a handle (14) at one end. The blades are hingedly connected to the rod at the end opposite the handle. The blades are movable between a folded configuration and an unfolded configuration. The folded configuration assumes a position which is slidable within the sleeve. The sleeve has a passageway with a triangular cross-section (64). The blades are of a generally triangular configuration when in the folded position. The plurality of blades includes a first blade (28) connected to the rod, a second blade (30) resiliently connected to one side of the first blade, and a third blade (32) resiliently connected to an opposite side of the first blade. A remote actuator (20) is provided so as to angularly displace the blades relative to the elongated rod.</p> |
