27 results about "Shoulder joint prosthesis" patented technology

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.

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 present disclosure relates to a shoulder joint prosthesis, which comprises a glenoid tray (1) and a glenoid head (2), wherein: the glenoid tray (1) has a rod portion (13) and a bottom plate (12) located at one end of the rod portion, and an inner tapered groove (14) is provided in both the rod portion (13) and the bottom plate (12), and the inner tapered groove (14) has an increasing cross-sectional diameter in the direction from the rod portion (13) towards the bottom plate (12), and the bottom plate (12) has a locking portion (11) in the direction opposite to the rod portion; the glenoid head (2) has a head portion (20) and a shank portion (29), at least a part of one end of the shank portion (29) away from the head portion (20) is a tapered structure (21), and the tapered structure (21) can be in taper fit with the inner tapered groove (14), and a locking protrusion (22) is provided on one end of the shank portion (29) close to the head portion (20).

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 present invention provides a highly adaptable carbon fiber modified polyetheretherketone shoulder joint prosthesis, belonging to the technical field of medical devices. It includes a tantalum metal glenoid backplate, one end of the tantalum metal glenoid backplate is provided with a backplate fixing screw, the other end of the tantalum metal glenoid backplate is provided with a glenoid ball head, the surface of one end of the glenoid ball head is in contact with a glenoid liner, and it further includes a humeral stem; an adjusting component, the adjusting component is arranged at the top of the humeral stem, and the adjusting component is used for adjusting the angle between the glenoid liner and the humeral stem; an auxiliary component, the auxiliary component is arranged at the top of the adjusting component, and the auxiliary component is used for secondary adjustment of the glenoid liner. By setting the adjusting component, the installation adaptability of the glenoid ball head and the glenoid liner to different shoulder joint cutting surfaces is improved, and by setting the auxiliary component, the matching degree between the glenoid liner and the glenoid ball head is improved through secondary auxiliary adjustment of the glenoid liner.

The present disclosure discloses a shoulder joint prosthesis containing zirconium-niobium alloy on oxidation layer and a preparation method thereof, the preparation method comprises: using zirconium-niobium alloy powder as a raw material, conducting a 3D printing for one-piece molding to obtain an intermediate products of the humeral handle with articular surface and the scapular glenoid plate, and performing Sinter-HIP, cryogenic cooling and surface oxidation to obtain humeral handle with articular surface and scapular glenoid plate. The prosthesis comprises a humeral handle, an articular surface, a humeral head and a scapular glenoid plate, a bone trabeculae is arranged on the outer surface of the upper part of the humeral handle, the upper surface of the scapular glenoid plate and the outer surface of the circular pipe with internal thread.

The present invention relates to a double-acting total shoulder prosthesis, comprising: a glenoid prosthesis for fixedly connecting with an autologous glenoid, on which a first ball socket is formed; a humeral-side prosthesis for fixedly connecting with an autologous humerus, and on which a second ball socket is formed; a glenoid-side ball head installed in the first ball socket of the glenoid element and forming a semi-constrained glenoid-side ball socket joint therewith, and having an inner tapered hole formed thereon; a humeral-side ball head including a ball head portion and an outer tapered portion integrally formed on the outside of the ball head portion, the ball head portion of the humeral-side ball head being installed in the second ball socket of the humeral-side prosthesis and forming a semi-constrained humeral-side ball socket joint therewith, and the outer tapered portion of the humeral-side ball head being taper-connected in the inner tapered hole of the glenoid-side ball head and forming a rotating pair. Due to the double-acting joint design of the present invention, the stress concentration during shoulder joint movement is released, the occurrence of artificial shoulder joint dislocation can be effectively reduced, a good shoulder contour can be maintained, and the range of motion of the shoulder joint can be restored to the greatest extent possible.

The present invention provides a shoulder replacement surgery navigation system and method, which relates to the field of computer technology. The system includes: a controller and a navigation positioning device; the controller is communicatively connected to the navigation positioning device; the controller includes a preoperative planning module, a preoperative simulation module, and an intraoperative execution module. The present invention provides a shoulder replacement surgery navigation system and method. By combining preoperative medical images of the affected bone and medical images of the healthy bone corresponding to the affected bone, the healthy morphology of the affected bone can be more accurately reflected when the affected bone has bone defects and / or morphological abnormalities. Furthermore, prosthesis planning can be performed based on the three-dimensional bone model of the affected bone, making preoperative surgical planning more objective and quantitative. Based on the parameter information of the prosthesis to be implanted, the range of motion of the patient's surgical shoulder joint after the prosthesis is implanted in the affected bone can be simulated, further improving the accuracy and rationality of prosthesis planning, and significantly improving the accuracy and reliability of orthopedic surgery.

The present invention provides a glenoid base and a shoulder joint prosthesis. The glenoid base includes: a substrate including a connection surface; a connection column disposed on the connection surface, and a receiving groove is provided on the connection column; a deformable coupling member connected to the connection column and located at the receiving groove, and the deformable coupling member deforms to have a received state located in the receiving groove and a coupling state extending outside the connection column. The technical solution of the present application effectively solves the problem of poor connection reliability between the glenoid base in the related art and the autologous bone.

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.

Shoulder joint implants are disclosed herein for use in shoulder reconstruction that are configured to facilitate the inclusion a central bone screw for augmented bone fixation. The implant can include a baseplate (or metaglene) configured to secure a glenosphere or other prosthetic component to the glenoid. To facilitate lateral or proximal insertion of a central bone screw through the implant, a throughbore defined along the central axis of the metaglene can be widened to accommodate the maximum diameter of the screw. To enable fixation of the glenosphere to the metaglene, a collet can be configured to engage the smaller diameter of a glenosphere coupling element and inserted into the central throughbore. The collet and the bone screw can be separate parts, thereby making insertion of the bone screw optional. Alternatively, the collet and bone screw can be integrated together to form a unitary construct.

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 present invention provides a shoulder joint prosthesis without a trial mold having a microporous tantalum coating and an installation method thereof, belonging to the technical field of medical devices. It includes a constrained humeral prosthesis mechanism and a glenoid spherical prosthesis. The constrained humeral prosthesis mechanism includes a humeral stem body, a reference platform is provided at the top of the humeral stem body, a humeral adapter plate is connected to the top of the reference platform, a calibration component is installed inside the humeral adapter plate, a sealing cover is connected to the top of the calibration component, and a mating component is installed on the top surface of the sealing cover. By providing a humeral stem body, an inner stem body and a support stem to replace the existing regular multi-type humeral stem prostheses, and at the same time using the calibration component to change the orientation of the ball socket on the inner snap-in plate to adapt to the glenoid spherical prosthesis at different angles, the present invention solves the problems of poor versatility of the existing humeral stem prostheses and increased burden on the patient's humerus.

The application discloses a rotatable half-shoulder joint prosthesis, which comprises a humeral head, a glenoid liner, a limiting piece, an upper bone-cutting segment, a lower bone-cuting segment and a medullary cavity needle, one end of the humeral head is provided with a limiting groove, the glenoid liner is arranged in the limiting groove, one end of the upper bone-cuting segment is connected with the limiting piece through the glenoid liner, the upper bone-cutting segment can move axially and rotate relative to the glenoid liner, the limiting piece is used for limiting the upper bone-cuting segment from being separated from the glenoid liner, the other end of the upper bone-cuting segment is connected with the lower bone-cuting segment, one end of the lower bone-cuting segment, which is far away from the upper bone-cuting segment, is connected with the medullary cavity needle, and the medullary cavity needle is used for being implanted into a humeral medullary cavity. In the application, the upper bone-cuting segment can move axially and rotate relative to the glenoid liner, the length of the half-shoulder joint prosthesis can be adjusted, the postoperative activity of a patient can be effectively coped with, and the humeral head, the upper bone-cuting segment, the lower bone-cuting segment, the medullary cavity needle, bone cement and the humerus are not affected by abnormal rotation or shearing stress.

The modular positive and negative shoulder and shoulder joint replacement prosthesis comprises a humerus handle prosthesis, a humerus handle near-end prosthesis is detachably arranged at the end of the humerus handle prosthesis, and a base is arranged at the end, away from the humerus handle prosthesis, of the humerus handle near-end prosthesis. A humerus head prosthesis and a middle piece are connected between the humerus handle near-end prosthesis and the base, concave-convex structures matched with each other are arranged on the humerus head prosthesis and the middle piece, and the humerus head prosthesis is arranged to be attached to the middle piece; the base is connected with the shoulder blade through a bone screw, and the humerus handle prosthesis is installed in the humerus in an inserted mode. According to the shoulder joint prosthesis, the load of a traditional shoulder joint prosthesis on a human body joint is relieved, various shoulder joint disease replacement surgery schemes are provided, the surgery operation process is simplified in the surgery, the operation of repeated model testing in the surgery is avoided, the shoulder joint structure of a patient can be adapted through modular design, and the practicability is high. And the application of half-shoulder replacement can be implemented on the basis of full-shoulder replacement.

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.

An instrument assembly for an orthopedic procedure is disclosed. The instrument assembly can optionally include any one or combination of a reamer and a cut guide assembly. The cut guide assembly can be configured to couple to the reamer. The cut guide assembly can optionally include any one or combination of a clamp, a carriage and a cut block. The clamp can be selectively movable along a shaft of the reamer and lockable thereto. The first arm can project from the reamer. The carriage can be selectively moveable along a longitudinal length of the first arm. The cut block can be coupled to the carriage via one or more magnets.

The invention discloses a time period limiting type reverse shoulder joint prosthesis, and relates to the field of joint prostheses, the time period limiting type reverse shoulder joint prosthesis comprises a humerus base, a spacer is installed at the top end of the humerus base, a polyethylene lining is installed at the top of the spacer, and a shoulder glenoid ball is attached to the end face of one side of the polyethylene lining; the end face of one side of the shoulder glenoid ball is in threaded connection with a shoulder glenoid base, a shoulder glenoid opening is formed in the inner side of the shoulder glenoid ball, an absorbable suture line penetrates through the inner side of the shoulder glenoid opening, a humerus base opening is formed in the inner side of the humerus base in a penetrating mode, and the absorbable suture line penetrates through the shoulder glenoid opening and the humerus base opening and is fixed in the shoulder glenoid opening and the humerus base opening. In the early stage of prosthesis implantation, the shoulder joint is limited, so that the shoulder joint becomes a restrictive prosthesis temporarily, it is guaranteed that the joint cannot be dislocated, and the absorbable suture can be absorbed within about 56-78 days in the post-operation process of a patient.

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.

The utility model relates to the technical field of medical instruments, in particular to a shoulder joint prosthesis assembly which comprises a patch and a connecting piece, the patch is provided with a matching surface coplanar with a glenoid surface of a shoulder blade, and the matching surface is used for being in contact fit with a humerus head; the connecting piece is used for installing the patch on the shoulder blade. The patch is connected to the scapula and provided with a matching face coplanar with the glenoid face of the scapula, and the matching face is in contact fit with the humerus head. The connecting piece is connected with the patch and the shoulder blade and connected to one side of the matching face. Thus, when the glenoid surface is damaged slightly, the patch is connected to the scapula, and the matching surface can be coplanar with the glenoid surface and can be in contact fit with the humerus head. And the matching surface can be used for filling the damaged glenoid surface, so that the humerus head and the shoulder blade can be rotationally matched. Moreover, the patch is arranged, so that the problem that the glenoid surface on the scapula needs to be completely cut off in the related technology is solved, the cutting difficulty and the operation difficulty are reduced, the joint stability is improved, the postoperative recovery time is shortened, and the risk of postoperative dislocation is reduced.

The present invention relates to the technical field of image registration, and provides a method and device for detecting bone landmarks based on image registration. The method comprises: determining the centroid coordinates of a scapula mask based on a bone joint image to be measured; aligning the origin coordinates of the annotation template with the origin coordinates of the bone joint image to be measured based on the centroid offset between the scapula segmentation mask and the scapula mask in the annotation template, and transforming the coordinates of each landmark in the annotation template to obtain an aligned annotation template; respectively registering the scapula segmentation region with the scapula region, and the humeral segmentation region with the humeral region in the aligned annotation template to obtain a registration result; and spatially transforming the coordinates of each landmark in the aligned annotation template based on the registration result to obtain target coordinates for navigation and planning of shoulder replacement surgery. The method of the present invention improves the efficiency and accuracy of bone landmark detection.