| 摘要 |
1,206,277. Surgical retractors. W. K. GAUTHIER. 10 Oct., 1967 [21 June, 1967], No. 46189/67. Heading A5R. A surgical retractor comprises arms 20, 22, 24, 26 interconnected by connectors 80 to form a frame, support means 100, 100', 200, 200# adjustably carried on the arms and retractor blades 160, 160' depending from and freely pivotal on supporting arms 120 which are adjustably mounted in the support means so that the retractor blades may be moved parallel to and perpendicular to the interconnected arms. Each arm is formed with two longitudinal cavities 32, 34 (266, 268, Fig. 14) which are superimposed or arranged side by side, one cavity of each arm communicating through a slot 42 (274) with the lower side of the arm and the other cavity communicating through a slot 40 (276) with the upper side of the arm. Each support means 80 comprises a portion 112 having teeth (114, 116, Fig. 4) on one or both sides, for engaging in an arm cavity which has teeth on one or both sides, and which is connected 'by a post 110 to a portion 102 forming a recess 104 for receiving a Made supporting arm 120. A rib 106 on one side of the recess engages one of a series of ribs 124 on the supporting arm to hold it in adjusted position. A portion 132 depending from each supporting arm is pivotal relative to the supporting arm and terminates in a flat portion 144 having two rows of projections 146 (148) engageable by projections 164 (166) on the retractor blade 160 for securing the blade in adjusted position. The blade has a flexible tapered end 180. The connectors 80 between the interconnected arms 20, 22, 24 and 26 comprise portions (82, 90, Fig. 13), which are interconnected by a post (88) and have teeth on one or both sides for engaging corresponding teeth in the arm cavities. Alternatively, the portions (82, 90) may have teeth on one side and on the other side, resilient projections (296, 298, Fig. 15) which bear against one side of the cavity to urge the co-operating teeth of the portion and cavity into engagement. The parts of the device may be made of plastics material. |
