7 results about "Humerus bone" patented technology

An apparatus for assisting a user's upper limb movement, comprising: a humerus module and a shoulder module. The humerus module comprises: a first joint, a first drive source, a first cable and a second cable. The shoulder module comprises: a first rotating assembly and a first fixing device. The apparatus further comprises: a first support configured to align the first joint with a shoulder joint of the upper limb; and a second support connected between the humerus module and the shoulder module. The first joint is positioned in use to assist the user's humerus movement. The first drive source is connected to the first joint by the first cable and the second cable, and is for pulling the first cable and the second cable to transmit a force to the first joint to respectively elevate and depress the humerus. The first fixing device is for fixing the first rotating assembly to the upper limb. The first rotating assembly is configured to allow relative rotation between the second support and the first fixing device during internal / external rotation of the user's shoulder.

This application discloses a brace for fixing humeral shaft fractures, including a separate cuff, an elbow strap, and a forearm cuff. The separate cuff and the forearm cuff are connected by the elbow strap. The separate cuff has a layer spaced apart for placing an aluminum splint, and multiple mesh pockets on its inner side for placing pressure pads, allowing for the placement of pressure pads according to the direction of displacement to correct angular displacement. An elastic connecting band is provided in the middle of the separate cuff. This application uses a separate cuff for fixing the humeral shaft, and by placing a counterweight on the outside of the elbow strap, a downward traction force is applied to the humeral shaft from below. The elastic connecting band does not obstruct the downward movement of the second cuff, thereby correcting the shortening displacement of the humeral shaft in real time and effectively preventing re-dislocation of the humeral shaft.

The application relates to the technical field of medical devices, in particular to a novel metal ceramic reverse type shoulder joint prosthesis system and a preparation method thereof. The system comprises a humeral stem, a humeral holder, a humeral pad, a reverse type glenoid head, a taper adapter and a glenoid holder which are sequentially assembled together. The humeral holder, the humeral pad, the reverse type glenoid head and the taper adapter are all formed by 3D zirconium niobium metal printing or forging; the humeral stem and the glenoid holder are integrally formed by 3D printing zirconium niobium alloy, and the bone combining surface is a trabecular structure; an active contact friction interface is formed between the humeral pad and the reverse type glenoid head, and the interface is a zirconium niobium surface oxidized metal ceramic interface. It can be seen that, by replacing the high polymer material component with the zirconium niobium metal ceramic component, the prosthesis system can reduce the bone cutting amount of the proximal humerus, increase the wear resistance of the friction interface, and manufacture a micro-texture structure on the friction interface to realize the super strong wear resistance and low wear of the friction interface, which is beneficial to the long-term stability after the prosthesis is implanted.

The present invention provides an instrument and method for removing the bone cylinder from inside the humeral head without cutting the humeral head. [Solution] The graft release bell instrument comprises a central shaft, a bell detachably coupled to the central shaft, an inner blade coupled to the central shaft, and an outer blade coupled to the bell. A method for extracting a cancellous bone graft includes inserting the graft release bell instrument into the cut portion of the bone, checking the depth of the cut portion using the scale on the side of the graft release bell instrument, rotating the graft release bell instrument to cut the cancellous bone, withdrawing the graft release bell instrument from the cut portion, and separating the graft from the graft release bell instrument.