58 results about "Hip joint prosthesis" patented technology

The invention provides a hip joint prosthesis. The hip joint prosthesis comprises a femoral stem body; the driving part is arranged on the femoral stem main body; the transmission part is movably arranged in the femoral stem main body, and the driving part drives the transmission part to move; the plug connector is telescopically arranged on the femoral stem main body to have a plug-in position and a first storage position, and the transmission part moves to drive the plug connector; when the plug connector is located at the plug-in position, the plug connector extends out of the femoral stem main body; when the plug connector is located at the first storage position, the plug connector retracts into the femoral stem main body; the force measuring piece comprises a dynamometer and a first elastic piece connected to the dynamometer, the dynamometer is movably arranged in the femoral stem body, and the dynamometer drives the first elastic piece to stretch out and draw back on the femoral stem body so that the first elastic piece can have a force measuring position and a second containing position. According to the technical scheme, the problem that the hip joint prosthesis in the related technology cannot give consideration to the stability after implantation and the convenience of later maintenance at the same time is solved.

The application provides a hip joint prosthesis, which comprises a first end of a first stem body connected with a ball head part, an accommodating space arranged in the inside of the first stem body, a first mounting port and a second mounting port arranged on the side wall of the first stem body, an operation hole arranged on the top of the first stem body and communicated with the accommodating space, a moving piece movably arranged in the accommodating space, a first transmission piece and a second transmission piece both movably connected with the moving piece, the moving piece moving being capable of driving the first transmission piece and the second transmission piece to move close to or away from each other, a first pressing piece connected with the first transmission piece and located outside the first mounting port, and a second pressing piece connected with the second transmission piece and located outside the second mounting port; and an adjusting piece penetrating through the operation hole and driving the moving piece to move. The technical scheme of the application effectively solves the problem of insufficient stability of the hip joint prosthesis after implantation in the related art.

The present application belongs to the field of biomedical materials and computer aided design technology, and discloses a kind of porosity gradient adjustable hip joint prosthesis porous coating topological optimization method.The present application is aimed at solving the problems of existing design, such as unadjustable porosity distribution, gradient mutation, difficult to balance mechanical properties and bone integration, and the gap between topological optimization and manufacturing constraints.The method introduces nonlinear porosity gradient constraints and adaptive optimization mechanism in the process of topological optimization through the steps of geometric modeling and boundary condition definition, nonlinear porosity gradient field generation, finite element analysis, sensitivity analysis, density filtering and porosity constraint processing, optimization criterion updating and convergence judgment, and realizes the smooth transition of porosity from the core to the surface of the prosthesis.The present application can optimize the mechanical support and biological integration performance simultaneously, eliminate non-manufacturable structures, and adjust the gradient parameters and modularize the extension, providing an efficient and reliable calculation method for personalized hip joint prosthesis design, and having significant engineering and clinical application value.

An apparatus, system, and method for determining a position of a hip prosthesis in a bone of a patient includes determining a set of contact points between a femoral head of a femoral prosthesis and a cup liner of an acetabular cup to be implanted into a patient based on a mechanics model. The mechanics model is indicative of mechanical motion of a hip exhibited during performance of a set of ADL or at corresponding functional positions of the patient. In some embodiments, a mathematical model may be generated based on a plurality of sets of contact points determined using the mechanics model and subsequently used to determine a resultant set of contact points.

A method of implanting a hip joint prosthesis into a patient can include obtaining image data of hip joint anatomy of the patient. Physical activities that the patient desires to participate in subsequent to implanting the hip prosthesis can be determined. A size and an initial placement of the hip joint prosthesis based on the image data can be determined. A desired range of motion of the hip joint prosthesis based on the determined physical activities can be determined. A plan can be created comprising a desired implanted location of the hip joint prosthesis and based on the desired range of motion. The plan can be incorporated onto a guide. The plan can be executed with the guide thereby implanting the hip joint prosthesis into the patient at the desired implanted position.

The application provides a femoral stem prosthesis and a hip joint prosthesis with the same, wherein the femoral stem prosthesis comprises: a mounting block comprising a first block body and a second block body, the second block body being arranged on the side of the first block body, and the first block body and the second block body being capable of relative movement; a guide structure arranged between the first block body and the second block body, the guide structure extending along the axial direction of the first block body; a locking assembly arranged between the first block body and the second block body to fix the first block body and the second block body; a support column swingably arranged on the second block body, and an acetabular component arranged on the support column; and a fixing mechanism arranged below the first block body and capable of being inserted into the medullary cavity. The technical scheme of the application effectively solves the problem that the relative position of the neck stem of the femoral stem and the stem body cannot be adjusted in the related art.

A hip prosthesis that comprises an acetabular component and a femoral component. The acetabular component comprises a shell having an approximate shape of a hollowed spherical cap, and optionally comprises a liner. The femoral component comprises a stem portion, a neck portion that is joined to the stem portion, and a spherical head that is affixed to the neck portion. The acetabular component is configured to receive all or a portion of the spherical head of the femoral component. Further, the acetabular component comprises one or more magnets, and the femoral component comprises a spherical magnet that is rotatable within the spherical head, such that the one or more magnets of the acetabular component and the spherical magnet of the spherical head of the femoral component are oriented to generate an attractive force therebetween.

The invention provides an acetabular prosthesis which comprises an acetabular cup, an acetabular prosthesis body and an acetabular prosthesis body, and a containing part communicated with the outer surface of the acetabular cup is arranged in the acetabular cup; the outward-extending fixing piece is movably arranged in the containing part and is provided with a fixing position extending out of the acetabular cup and an avoiding position located in the containing part, and an acute-angle included angle or a right-angle included angle is formed between the moving direction of the outward-extending fixing piece and the axis of the acetabular cup; and the operating part is arranged on the acetabular cup and is in driving fit with the overhanging fixing part, so that the overhanging fixing part is switched between the fixing position and the avoiding position. According to the technical scheme, the problem that the acetabular cup fixing effect is poor in the prior art is effectively solved.

Periprosthetic bone fixation plates are disclosed including, for example, periprosthetic proximal femur plate, periprosthetic distal femur plate, periprosthetic humerus plate, periprosthetic ring plate, and periprosthetic troch plate. In use, the periprosthetic bone fixation plates are arranged and configured for use in periprosthetic fractures. That is, the periprosthetic plates include one or more features to facilitate positioning and securement of the bone fixation plate to a patients bone that previously received a surgically implanted orthopedic device or implant such as, for example, an intramedullary nail, a hip prosthesis, a knee prosthesis, etc. In use, the one or more features are designed and configured to facilitate avoidance of the previous surgically implanted orthopedic device or implant. In addition, the periprosthetic bone fixation plates are arranged and configured to facilitate plating of a longer working length as compared to existing bone fixation plates (e.g., plating from, for example, femoral condyle to greater trochanter).

An apparatus, system, and method for determining a position of a hip prosthesis in a bone of a patient includes determining a set of contact points between a femoral head of a femoral prosthesis and a cup liner of an acetabular cup to be implanted into a patient based on a mechanics model. The mechanics model is indicative of mechanical motion of a hip exhibited during performance of a set of ADL or at corresponding functional positions of the patient. In some embodiments, a mathematical model may be generated based on a plurality of sets of contact points determined using the mechanics model and subsequently used to determine a resultant set of contact points.

The utility model relates to the technical field of artificial hip joint prostheses, in particular to a hip joint femoral stem hollow conical head. Comprising a cone head surface (1), a cone side surface (2), a cone inner cavity (3) and a powder cleaning channel (5) which are connected in sequence, the conical head face (1) is used for sealing the in-conical cavity (3), the conical side face (2) is matched with a ceramic ball head or a metal ball head, the conical side face (2) is provided with a plurality of small protrusions (4) so that the femoral stem conical head can be matched with the ceramic ball head or the metal ball head more tightly, and the in-conical cavity (3) is used for increasing elastic deformation of the conical head. The small bulges (4) generate plastic deformation when the ceramic ball head or the metal ball head is assembled with the conical head, so that the contact area between the ball head and the conical head is increased, and the friction force is increased; and the powder cleaning channel (5) is used for cleaning unmelted powder in the cavity in additive manufacturing.

An artificial hip joint prosthesis and a method for mounting the same are provided. The artificial hip joint prosthesis includes a spherical chamber and a ball head. An outer spherical surface of the ball head fits with an inner spherical surface of the spherical chamber to form a spherical hinge. An inner spherical surface of the spherical chamber has an opening in an elliptical shape or a similar shape with a long axis and a short axis, to allow insertion of the ball head. The long axis of the opening in the elliptical shape or the similar shape has a length A, and the short axis of the opening has a length B. The ball head is mounted inside the spherical chamber and has a diameter C, in which B<A≤C.

The invention discloses a grinding control method and device of an electric grinding head, a storage medium and electronic equipment, and relates to the technical field of medical treatment. The method comprises the following steps: acquiring real-time position information of a grinding head center of an electric grinding head in a surgical navigation coordinate system in a bone grinding process; the position relation between the electric grinding head and a preset safety area is determined according to the real-time position information, the preset safety area is constructed based on the radius of the hip joint prosthesis, and the position relation represents whether the electric grinding head is located in the preset safety area or not; and a target control instruction for controlling the electric grinding head is determined according to the position relation, and the target control instruction is sent to a controller of the electric grinding head. The technical problem that in the hip joint operation process in the prior art, when an electric grinding head is used for bone grinding, the excessive grinding risk exists is solved.

The invention relates to the technical field of medical prostheses, in particular to a hip joint prosthesis with a bionic joint capsule and application of the hip joint prosthesis with the bionic joint capsule. A joint sliding capsule is additionally arranged between an acetabular cup and a femoral stem, so that the acetabular cup and the femoral stem can be stably and reliably connected, and ball socket stability is provided for initial postoperative recovery; meanwhile, mechanical support can be provided for tissue repair, and fusion of ligament and joint capsule soft tissue is promoted; the joint slide bag is of a porous structure, external tissue fluid flows in, is stored and is lubricated through the porous structure, and direct contact between friction pairs is reduced, so that the friction coefficient is reduced, and the wear resistance of the prosthesis is improved.

The present application relates to the field of medical devices, in particular to a reverse hip joint prosthesis for severe acetabular defects. The present application provides a reverse hip joint prosthesis, comprising a femoral side prosthesis and an acetabular side prosthesis, the femoral side prosthesis comprising a femoral cup and a femoral stem, the femoral cup and the femoral stem being connected by a connecting neck, the acetabular side prosthesis comprising an acetabular head and a bone body fitting part, the acetabular head and the bone body fitting part being connected by a head support, the femoral cup and the acetabular head being matched. The reverse hip joint prosthesis provided by the present application is used to help the subject to achieve the best surgical effect.

An orthopaedic surgical instrument assembly operable to taper lock orthopaedic components to one another includes a taper assembly instrument having a handle with a draw rod extending therethrough so as to be slidable relative to the handle and a clamp instrument configured to selectively engage the taper assembly instrument so as to move the draw rod relative to the handle. A sacrificial tensile bar component of the taper assembly instrument is configured to break when a predetermined load has been applied to the orthopaedic components. A method of using an orthopaedic surgical instrument assembly to taper lock orthopaedic components to one another is also disclosed.

The application provides a hip replacement preoperative reconstruction system and device based on intelligent learning, and relates to the technical field of auxiliary medical instruments.The hip replacement preoperative reconstruction system based on intelligent learning comprises an image quality evaluation module, an image fusion evaluation module and a prosthesis planning module.The image quality evaluation value obtained through image data is used to determine whether to perform image quality optimization, then the image fusion quality evaluation value obtained based on image fusion quality data is used to determine whether to perform image fusion quality optimization, and finally the prosthesis planning evaluation value obtained based on the prosthesis position data, the image fusion accuracy, the image quality evaluation value and the image fusion quality evaluation value is used to determine whether to perform feedback, so that the selection of the hip joint prosthesis position is optimized, and the correlation between the hip replacement preoperative reconstruction process and image quality is improved, thereby solving the problem of low correlation between the hip replacement preoperative reconstruction process and image quality in the prior art.

The invention discloses a method and system for intelligently recommending prosthesis parameters in hip joint replacement surgery, and relates to the technical field of hip joint prosthesis parameter recommendation, and the method comprises the steps of 1, information acquisition and analysis, 2, prosthesis material analysis and 3, prosthesis material and parameter confirmation. Personal information, hip joint pathological information, hip joint prosthesis material information and rehabilitation information of each historical patient are sorted and concluded to obtain a medical information set of each historical patient, and a preoperative information set of a target patient is matched with the medical information set of each historical patient; the method comprises the following steps: acquiring a target patient, acquiring a hip joint prosthesis material recommendation table of the target patient, verifying the material parameters of each prosthesis material and the reference parameters of the target patient to obtain a recommended material, and finally compensating the reference parameters based on the correction parameters of the recommended material, thereby improving the hip joint prosthesis matching rate of the patient and the postoperative prosthesis survival rate.

The application discloses a kind of acetabular assembly, hip joint prosthesis and assembly method, a kind of acetabular assembly, comprising: acetabular outer cup and acetabular liner;Acetabular outer cup includes first cup body, first cup body is formed around first containing space, first cup body is provided with anti-rotation groove, anti-rotation groove extends from the cup mouth end surface of the first cup body to the inner wall of the first cup body;Acetabular liner includes second cup body, second cup body can be contained in first containing space, the outer wall of second cup body is provided with anti-rotation part, and anti-rotation part can be matched in anti-rotation groove;Acetabular assembly can be in the relatively stable pre-placed state between acetabular outer cup and acetabular liner, in pre-placed state, in the direction of the axis of first cup body inward, part of anti-rotation part enters anti-rotation groove.In the application, the probability that anti-rotation part is abraded or the degree that anti-rotation part is abraded can be reduced in the process of acetabular assembly assembly.

The hip joint prosthesis revision extractor comprises a sliding weight rod, a sliding weight is connected to the sliding weight rod in a sliding mode, a check block is connected to the upper end of the sliding weight rod, and a femoral prosthesis connecting mechanism is connected to the lower end of the sliding weight rod. Through cooperation of the sliding weight rod, the check block, the femoral prosthesis connecting mechanism, the sliding weight and the like, when the femoral prosthesis is used in an operation, the femoral prosthesis connecting mechanism is connected with a femoral stem according to the actual condition of a patient and the use state of the femoral stem, the femoral prosthesis fixing mechanism is used for fixing, and the sliding weight at the rear end is held by a hand to enable the sliding weight to slide towards the check block at the tail end of the sliding weight rod; the impact force drives the sliding weight rod to move backwards and drives the femoral prosthesis connecting mechanism to move backwards, so that the femoral stem is withdrawn from the femur, and the extractor has the characteristics of convenience in use, small size, simplicity in operation, convenience in operation and capability of saving operation time.

The application provides a hip joint prosthesis, which comprises: a hip joint cup, a first mounting hole is arranged on the outer wall of the hip joint cup; a connecting structure is adjustably arranged in the first mounting hole, the connecting structure comprises a connecting stud, the connecting stud has an extended position extending out of the first mounting hole and a retracted position retracted into the first mounting hole, and the axis of the connecting stud is arranged to intersect the axis of the hip joint cup; and a driving structure is rotatably arranged on the hip joint cup, the driving structure drives the connecting stud to rotate and enables the connecting stud to switch between the extended position and the retracted position when the driving structure rotates. The technical scheme of the application effectively solves the problem of complicated implantation process of the hip joint prosthesis in the related art.

The invention discloses a hip joint prosthesis system and a preparation method thereof. The hip joint prosthesis system comprises a thighbone assembly, an acetabulum assembly and a soft tissue fixing device. The femoral component comprises a femoral stem and a femoral bulb, the femoral stem comprises a bone contact surface used for being combined with the thighbone of a user and a near-end bearing portion used for being connected with the femoral bulb, the near-end bearing portion extends laterally to form a neck, and the neck is provided with an interface structure. The bone contact surface of the femoral stem and the bone contact surface of the acetabular cup are each provided with a three-dimensional porous structure. The acetabulum assembly comprises an acetabulum lining arranged on the femur ball head in a sleeving mode and an acetabulum cup arranged outside the acetabulum lining in a sleeving mode. The soft tissue fixing device is mounted on the interface structure; the pore characteristic parameters of the three-dimensional porous structure on the femoral stem change in the axial direction of the femoral stem. According to the invention, the limitation that the traditional uniform coating cannot give consideration to the optimal bone ingrowth conditions of different bone regions can be overcome, and uniform and firmer osseointegration of the prosthesis in the body of a patient can be promoted.

The invention discloses a combined hip joint prosthesis, and relates to the field of artificial joints. According to the technical scheme, the femoral component prosthesis comprises a femoral component prosthesis and an acetabular prosthesis, a connecting shaft is fixed to the end of the femoral component prosthesis, a connecting cylinder is arranged at the end of the connecting shaft, a femoral head prosthesis is connected to the end of the connecting shaft through the connecting cylinder, the outer surface of the femoral head prosthesis is sleeved with the acetabular prosthesis, and an arc-shaped connecting piece is slidably connected to the outer surface of the acetabular prosthesis; and the acetabular prosthesis is connected with a limiting ring through an arc-shaped connecting piece. The femoral head prosthesis is connected with the bone through the connecting cylinder and the connecting shaft, the conical barrel structure is formed by the multiple plug blocks and the limiting base, the connecting shaft is prevented from falling off, connection can be completed only by inserting the connecting shaft in the assembling process, and installation is convenient; the caput femoris prosthesis and the acetabulum prosthesis are connected through the cooperation of the arc-shaped connecting piece and the limiting ring, the limiting ring can be limited through the arc-shaped connecting piece by rotating the limiting ring, and the limiting ring is prevented from falling off.

An electric mechanical hip joint prosthesis ceramic lining taking-out device comprises a motor device, the motor device is electrically connected with a battery, the output end of the motor device is connected with a cam device, the cam device is connected with a first transmission part, the first transmission part and a second transmission part form a hinged structure through a connecting part, and the connecting part comprises a plug pin and a first bearing; the first bearing is arranged at the end, connected with the second transmission piece, of the first transmission piece, the plug pin is inserted into a bearing hole of the first bearing in a matched mode, and the second transmission piece is detachably connected with a striking piece. The hip joint prosthesis further comprises a support, support legs are hinged to the connecting handle, telescopic pipes are connected to the inner walls of the support legs of the support in a sliding mode, and locking pieces abutting against the telescopic pipes are arranged on the support legs in a penetrating mode, so that a doctor can continuously hit and vibrate the ceramic lining of the acetabular cup with the same frequency and the same force when hitting the hip joint prosthesis. And during beating, the condition that the prosthesis is not easy to displace is ensured, so that the physical strength of a surgeon for taking out the lining and the time required by an operation are saved.

The present disclosure discloses a surgical system for preparing a predetermined shape on a hip joint, comprising a cutting tool, a mechanical arm and a controller, the cutting tool is used for cutting bone tissue; the mechanical arm is used for holding the cutting tool and controlling the pose of the cutting tool; the controller is used for making the mechanical arm enter a traction mode when a first signal is received, and making the mechanical arm enter a static mode when the first signal is not detected, wherein the mechanical arm can move under external force in the traction mode, and the mechanical arm keeps the current pose of the cutting tool in the static mode; in the static mode, the controller is further used for controlling the mechanical arm to automatically adjust the cutting tool to an alignment pose associated with a target pose when a second signal is received. Through the surgical system, the preparation of the predetermined shape for installing the hip joint prosthesis can be safely and controllably assisted, and the preparation of the predetermined shape for installing the hip joint prosthesis can be accurately assisted.

The utility model provides a hip joint prosthesis impact resistance testing machine, which relates to the technical field of impact resistance testing of medical prostheses, and comprises a base, a support frame is fixed on the upper surface of the base, a partition plate is fixed in the middle of the support frame, two sliding rods are fixed between the upper surface of the partition plate and the top end of the support frame, and the two sliding rods are fixed on the base. A hammer body assembly is arranged on the two sliding rods in a sliding mode, a hammer body clamp is installed between the two sliding rods, a secondary impact preventing device corresponding to the hammer body assembly in position is fixed to the upper surface of the partition plate, and a sample clamp capable of adjusting the placing height of a sample is fixed to the upper surface of the base. According to the device, the sample clamp is arranged, in the sample clamp, the lifting table is rotated to drive the supporting column to rotate in the inner threaded sleeve, the height of the sample supporting block can be adjusted, the compatibility of the sample can be improved, the application range of the device is widened, and the femoral head sample can be prevented from being subjected to secondary impact.

The utility model relates to the technical field of medical molds, in particular to a bone cement prosthesis model for a hip joint revision operation. The utility model provides a hip joint revision operation bone cement prosthesis model which comprises a hollow femoral head, a hollow femoral neck and a hollow femoral stem, and the femoral head, the femoral neck and the femoral stem are sequentially connected to form a hip joint cavity matched with a human hip joint; one end, far away from the femoral neck, of the femoral stem is provided with a bone cement injection port for injecting bone cement; the femoral head is formed by splicing a first half femoral head and a second half femoral head. A bone cement prosthesis manufactured by using the bone cement prosthesis model is basically consistent with a hip joint prosthesis in size, and the surface of the bone cement prosthesis is smooth enough, so that the friction between the bone cement prosthesis and the inner surface of an acetabulum can be reduced, and the pain of the hip joint is reduced; and secondly, the manufactured bone cement prosthesis is provided with a femoral stem similar to a real prosthesis, so that the muscle around the hip joint can be prevented from atrophy.

The utility model discloses a novel anti-loosening hip joint prosthesis which comprises a femoral stem, a femoral head is installed at the top end of the femoral stem, an acetabulum shell is installed at the top end of the femoral head, the femoral stem comprises a femoral skeleton and a connecting assembly, the connecting assembly is installed in the femoral skeleton, and a first connecting shell is installed at the top end of the connecting assembly. A plurality of length strips are fixedly installed at the bottom end of the femoral head, a sliding block is fixedly installed on one side of each length strip, a plurality of sliding grooves are formed in the first connecting shell, and the sliding blocks are connected with the sliding grooves in a sliding mode respectively. By arranging the length strip, the sliding block and the sliding groove formed in the first connecting shell, the connecting area of the femoral head and the first connecting shell is increased, the connecting stability of the femoral head and the first connecting shell is improved, the phenomenon that the hip joint prosthesis gets loose is avoided, and the service life of the hip joint is prolonged.

The application discloses a method for generating a simulated X-ray image in hip joint prosthesis planning and electronic equipment, and the method comprises the following steps: acquiring a left femur model, a right femur model and a three-dimensional CT image; processing the three-dimensional CT image based on the left femur model and the right femur model to obtain a first image, a second image and a third image; determining all first voxels located inside a prosthesis model based on the third image and the prosthesis model, setting the color of all the first voxels as the color corresponding to the prosthesis model, and obtaining a fourth image; and synthesizing the first image, the second image and the fourth image to obtain a simulated three-dimensional CT image. By setting the color of all the first voxels as the color corresponding to the prosthesis model to obtain the fourth image, the result of the hip joint prosthesis planning can be presented to a user for reference through the simulated three-dimensional CT image.

The invention discloses a hip joint prosthesis rebuilding backbone condition detection operation device and method. The device is characterized by comprising a positioning module, a holding module and an interference detection module; the positioning module comprises a positioning plate and a positioning hook, the positioning plate is attached to a bone structure around the bone defect cavity, and the positioning hook is located at the edge of the positioning plate and used for hooking the bone structure; the interference detection module is located at one end of the positioning plate and is of a transparent structure, and the outer surface of the interference detection module is a detection surface used for being filled in a bone defect cavity; the holding module is connected to the back face of the positioning plate through a detachable structure. According to the method, the condition of the backbone can be quickly and accurately determined in an operation, the bone can be conveniently trimmed, and the prosthesis can be accurately loaded into a bone defect cavity.