2 results about "GLENOID FOSSA PROSTHESIS" patented technology

The utility model relates to a glenoid cavity navigator for reverse type full shoulder joint replacement. The glenoid cavity navigator comprises a main shaft, a handle, a front locking nut, a rear locking nut and five positioning supports. Scales on the surface of the spindle are used for adjusting the position of the positioning bracket; a Kirschner wire is inserted into the central duct to position the prosthesis; the handle accords with ergonomics and is antiskid, and is detachably connected with one end of the main shaft through a rear locking nut; the positioning supports are different in model and accord with the glenoid cavity anatomical structure, the ends of the positioning supports are arranged between the handle and the main shaft and are screwed and locked through rotation of the front locking nut, and marks are arranged on the surfaces of the positioning supports. Compared with the prior art, the navigator adjusts the scales of the positioning support according to the plan before the operation, is fixed to the glenoid cavity during the operation, guides the follow-up operation, ensures that the implant angle of the prosthesis is consistent with the plan before the operation, effectively solves the problem that the implant angle of the glenoid cavity prosthesis is accurately controlled, reduces the risk of complications, and improves the success rate and efficiency of the operation; the postoperative shoulder function recovery of the patient is ensured.

This application relates to the field of orthopedic artificial joint design and manufacturing technology, and in particular to a metal-ceramic total shoulder joint prosthesis system and its preparation method. The metal-ceramic total shoulder joint prosthesis system includes a humeral stem prosthesis, a tapered adapter prosthesis, a humeral head prosthesis, and a glenoid fossa prosthesis connected sequentially. The humeral head prosthesis and the tapered adapter prosthesis are both formed using 3D zirconium-niobium metal printing or forging. The humeral stem prosthesis and the glenoid fossa prosthesis are integrally formed using 3D printed zirconium-niobium alloy. A metal-ceramic interface layer formed by the oxidation of the zirconium-niobium surface is provided at the relative motion contact surface of the humeral head prosthesis and the glenoid fossa prosthesis. The metal-ceramic total shoulder joint prosthesis system provided by this application has advantages such as longer service life, high wear resistance, low wear rate, no osteolysis, and no prosthesis loosening.