12 results about "Shoulder joint prosthesis" patented technology

The invention discloses an artificial shoulder joint prosthesis design method and system, and the method comprises the steps: collecting the motion trail and muscle activation state of a shoulder joint in different motion modes, separating the feature frequency and amplitude of the shoulder joint motion, and extracting a dynamic motion feature set of the shoulder joint; inputting the dynamic motion feature set into a contact mechanical model based on a discrete element method, and simulating contact force and friction behaviors between the shoulder joint prosthesis and the skeleton to obtain contact mechanical characteristics of the prosthesis and the skeleton; and according to the contact mechanical characteristics, generating an initial structure of the prosthesis by using a topological optimization algorithm based on a generative adversarial network, generating a prosthesis topological structure with gradient material distribution, and obtaining an optimized prosthesis design scheme. By utilizing the embodiment of the invention, a prosthesis design scheme with gradient material distribution can be generated, the weight of the prosthesis is reduced, and the strength and durability of the prosthesis are enhanced.

This invention relates to the field of medical devices, and in particular to an additive manufacturing porous anti-dislocation shoulder joint prosthesis system and its manufacturing method. The additively manufactured porous anti-dislocation shoulder joint prosthesis system consists of a humeral stem (1), a porous humeral body (2), a porous hemisphere lower end (3), a joint head (4), a double-ended pin (5), a joint head limiting plate (6), a porous hemisphere upper end (7), and a fixing screw (8). The head of the porous humeral body (2) has an outer conical surface that connects to the inner conical hole at the lower end of the porous hemisphere (3). The bottom surface of the lower end of the porous hemisphere (3) has an inner conical surface structure that matches the upper taper of the porous humeral body (2). The upper part of the lower end of the hemisphere (3) matches the joint head (4) as a joint surface. The top surface of the lower end of the porous hemisphere (3) matches the upper end surface (7) of the porous hemisphere with a keyway locking fit. The lower part of the joint head (4) is combined with the upper joint surface of the lower end of the porous hemisphere (3). The joint head limiting plate (6) is used in conjunction with the upper end of the porous hemisphere (7).

The utility model discloses a reverse shoulder joint prosthesis connecting piece which comprises a main installation assembly, a positioning assembly is arranged on one end face of the main installation assembly, a plurality of main fixing assemblies are arranged on the main installation assembly, and a connecting assembly is arranged on the end face, away from the positioning assembly, of the main installation assembly. And a shoulder glenoid ball head is arranged on the connecting assembly. The reverse shoulder joint prosthesis connecting piece has the advantages that the reverse shoulder joint prosthesis connecting piece is used for prosthesis replacement of the shoulder blade side in reverse shoulder joint replacement and treatment of rotator cuff injuries, the occurrence of shoulder blade lower incisura can be effectively prevented, and meanwhile different eccentric shafts can be selected when the reverse shoulder joint prosthesis connecting piece is matched with different patient conditions.

The utility model discloses an artificial shoulder joint prosthesis assembly which comprises a shoulder glenoid ball head and a shoulder glenoid back plate connected with the shoulder glenoid ball head through a locking screw. Wherein the shoulder glenoid back plate is adapted to be fixed to a shoulder blade by at least two thread tapes; the shoulder glenoid backboard is provided with at least two threading holes suitable for being connected with two wire belts in a one-to-one matched mode. The line belt comprises a connecting belt connected with the shoulder glenoid cavity back plate, an annular coil connected with the side end, located on the shoulder glenoid cavity back plate and back to the shoulder glenoid cavity ball head, of the connecting belt, and a belt loop titanium plate connected with the end, away from the connecting belt, of the annular coil.

A novel shoulder replacement system that utilizes multiple small implant plates instead of a single large one. The modular implant pieces are strategically placed in a shoulder joint to reduce the “rocking horse phenomenon,” preserve bone stock, and be minimally invasive. In addition, the system allows for customizable fit to accommodate a patient's specific wear pattern.

The application discloses a shoulder joint prosthesis connecting assembly and belongs to the technical field of medical devices. The shoulder joint prosthesis connecting assembly comprises a rotating assembly and a stretching assembly. The rotating assembly is mainly composed of a connecting piece and a fixing piece. The connecting piece is constrained on the fixing piece and can rotate around the central axis of the fixing piece. The stretching assembly is mainly composed of a bundle belt and an adjusting mechanism. One end of the bundle belt is fixed on the connecting piece, and the adjusting mechanism is located on the bundle belt and used for adjusting the tightness of the bundle belt. The application can conveniently realize the control operation of the comfort of different forms of wearing personnel.

The invention relates to the technical field of orthopedic surgery auxiliary instruments, and discloses reverse shoulder joint prosthesis implantation auxiliary equipment which comprises a fixing part, two positioning parts, two guiding parts and two clamping parts, the two positioning parts are symmetrically and rotatably arranged on the fixing part, the two guiding parts are symmetrically and rotatably arranged on the fixing part, and the two clamping parts are symmetrically and rotatably arranged on the fixing part. By arranging the symmetrically-distributed fixing piece, the positioning piece, the guiding piece and the clamping piece, accurate and stable implantation of the reverse shoulder joint prosthesis is achieved, the fixing piece is attached to the humerus through the bent U-shaped bottom support and is matched with an extrusion structure to achieve stable fixation of the device, the angle of the positioning piece can be flexibly adjusted, accurate positioning is achieved by attaching the positioning plate to the sectioning plane of the humerus, and the device is simple in structure and convenient to use. The angle of the guiding piece can be flexibly adjusted, the guiding piece is stably fixed through friction locking, it is ensured that the axis of the prosthesis is aligned with a bone hole, the clamping piece can be adjusted in a sliding mode, the prosthesis is stably clamped without being damaged by being matched with a limiting structure, and the problems that in the prior art, the prosthesis is prone to skewing during implantation, and bone cement wrapping is uneven are solved.

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.

This application relates to the field of orthopedic artificial joint design and manufacturing technology, and in particular to a metal-ceramic reverse-type shoulder joint prosthesis system and its preparation method. The metal-ceramic reverse-type shoulder joint prosthesis system includes a humeral stem prosthesis, a humeral support prosthesis, a reverse-type glenoid head prosthesis, a taper adapter prosthesis, and a glenoid support prosthesis connected sequentially. The sliding contact surface of the humeral support prosthesis is adapted to the contact surface of the reverse-type glenoid head prosthesis, and both the humeral support prosthesis and the reverse-type glenoid head prosthesis are manufactured using 3D-printed zirconium-niobium alloy. A metal-ceramic interface layer formed by the oxidation of zirconium-niobium surfaces is provided between the humeral stem prosthesis and the humeral support prosthesis, between the humeral support prosthesis and the reverse-type glenoid head prosthesis, between the reverse-type glenoid head prosthesis and the taper adapter prosthesis, and between the taper adapter prosthesis and the glenoid support prosthesis. This application offers advantages such as longer service life, high wear resistance, low wear rate, no osteolysis, and no prosthesis loosening.

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.

The present application belongs to the technical field of artificial limb and rehabilitation engineering, and relates to a humanoid shoulder joint prosthesis device based on amplification mechanism, which comprises a driving device, a transmission device, a three-degree-of-freedom spherical motion generation device and a motion space amplification device. The driving device adopts three groups of motor modules which are parallel along the axial direction and symmetrically distributed on the end face, to realize independent driving of three active branch chains; the transmission device reliably transmits the motor output to the spherical motion mechanism through multi-stage transmission shaft and gear structure; the three-degree-of-freedom spherical motion generation device is composed of an amplification support platform, a moving platform and three branch chains containing active rods and driven rods; the motion space amplification device is composed of two groups of 5R mechanisms, and is used for realizing multiple amplification of the joint motion space. The overall structure of the device is symmetrical and compact, has high stability and adjustable motion space, can realize multi-degree-of-freedom large-range motion of the humanoid shoulder joint, and is suitable for upper limb prosthesis wearing, rehabilitation training and robot assisted operation scenes.

Systems and methods for a customized reusable guide for shoulder replacements. In an example embodiment, a method comprises providing an alignment compass base, wherein the alignment compass base is configured to enable rotational orientation of a radial offset insert and a K-wire guide tube with respect to a guide base, inserting the guide base component into the alignment compass base, inserting the radial offset insert into the guide base component, rotating, using a first alignment tool, the radial offset insert to a first orientation angle with respect to the guide base component, inserting the K-wire guide tube into the radial offset insert, rotating, using a second alignment tool, the K-wire guide tube to a second orientation angle with respect to the guide base component.