Patent ID: 9084591
Filing Date: 2015-07-21
Classification: A61B

Abstract:
1. A surgical retractor, comprising: a first rail and a second rail connected at an angle and defining a retractor plane; the first rail includes an outer surface and a plurality of teeth recessed with respect to the outer surface such that the plurality of teeth does not extend beyond the outer surface; the second rail includes an outer surface and a plurality of teeth recessed with respect to the outer surface such that the plurality of teeth of the second rail does not extend beyond the outer surface of the second rail; a first slider configured to slide inwardly and outwardly along the first rail and carry a first blade at an angle to the retractor plane; the first slider including a first lock configured to arrest movement of the first slider in at least one direction relative to the first rail; the first slider including a plurality of bearings arranged about the outer surface of the first rail such that the plurality of bearings does not contact the plurality of teeth of the first rail; a second slider configured to slide inwardly and outwardly along the second rail and carry a second blade at an angle to the retractor plane; the second slider including a second lock configured to arrest movement of the second slider in at least one direction relative to the second rail; the second slider including a plurality of bearings housed in the second slider and arranged about the outer surface of second rail such that the plurality of bearings does not contact the plurality of teeth of the second rail; wherein the first rail includes four interconnected sides around a longitudinal axis; the plurality of bearings disposed in the first slider includes eight cylinder bearings configured such that a pair of cylinder bearings are located adjacent to each side of the first rail and spaced apart along the longitudinal axis; and the second rail includes four interconnected sides around a longitudinal axis; the plurality of bearings disposed in the second slider includes eight cylinder bearings configured such that a pair of cylinder bearings are located adjacent to each side of the second rail and spaced apart along the longitudinal axis.