13 results about "Condyle" patented technology

This invention provides a fixation device and assembly method for pericondylar fractures of the knee joint prosthesis. The knee joint prosthesis includes a femoral condyle, a tibial plateau, and a tibial pad. The femoral condyle includes an anterior condyle, two posterior condyles, and an intercondylar fossa. A fixation device is installed in the intercondylar fossa, comprising an intramedullary fixation pin and a connecting fixation block. The connecting fixation block is installed within the intercondylar fossa and engages with the force-applying end of the intramedullary fixation pin. The connecting fixation block includes a main body with a top surface facing the tibial pad and a bottom surface opposite the top surface. The bottom surface extends away from the top surface to form a protrusion, and a through hole is formed within the protrusion, which is used to accommodate and fix the force-applying end of the intramedullary fixation pin. This invention embeds the entire connecting fixation block within the intercondylar fossa, fully utilizing the existing intercondylar fossa space of the PS-type prosthesis to establish a precise channel for the intramedullary fixation pin, thereby fixing the pericondylar fracture through structural fit.

Embodiments of the present application provide a femoral condyle prosthesis and a femoral prosthesis with the femoral condyle prosthesis. The femoral condyle prosthesis comprises a femoral condyle, which comprises a medial condyle and a lateral condyle for corresponding cooperation with a tibia, the medial condyle and the lateral condyle are connected to each other to form an anterior condylar surface, and a middle of the anterior condylar surface is recessed to form a trochlear groove for accommodating a patella, a line connecting the lowest points of the trochlear groove is a prosthesis patella trajectory line, and the prosthesis patella trajectory line is located outside a midpoint of an intercondylar notch at a position near the lowest point of the trochlear groove of the femoral condyle. Therefore, the femoral condyle prosthesis of the embodiments of the present application can greatly reduce the problem of knee pain in the large flexion movement of the knee joint.

This invention relates to the field of artificial joint prosthesis technology, and discloses an anatomical femoral condyle knee joint prosthesis that does not preserve the cruciate ligament. The prosthesis includes a femoral condyle, a tibial plateau pad, and a tibial plateau support. The femoral condyle comprises a medial condyle and a lateral condyle. The medial and lateral condyles, in lateral view, respectively form medial condyle curve contours and lateral condyle curve contours. The medial condyle curve contour is located lateral to the lateral condyle curve contour, and the movement trajectory length of the medial condyle curve contour is 15%-25% longer than that of the lateral condyle curve contour. The tibial plateau pad has medial condyle curved grooves and lateral condyle curved grooves that respectively conform to the medial and lateral condyles. The slope of the medial condyle curved groove is greater than that of the lateral condyle curved groove. This invention provides an anatomical femoral condyle knee joint prosthesis that does not preserve the cruciate ligament, solving the problem of poor compatibility between existing prostheses and surrounding tissues after implantation.

The present invention relates to a data processing apparatus for an occlusal vertical dimension of a patient, a driving method for the data processing apparatus for an occlusal vertical dimension of a patient, and a computer-readable recording medium including a program for executing the driving method, the data processing apparatus comprising: a storage unit storing computed tomography (CT) data obtained by imaging the oral cavity and head of a patient for an occlusal vertical dimension; and a control unit that applies an artificial intelligence (AI) program to the stored CT data to analyze same and adjusts, on the basis of a result of the analysis, a designated 3D tooth model by using the condyle of the patient in the CT data as a reference axis to set the occlusal vertical dimension of the patient.

This application discloses an adjustable medial femoral condyle exposure device, belonging to the field of medical auxiliary device technology. The adjustable medial femoral condyle exposure device includes a pad and an air bladder. The air bladder is located on the lower side of the pad. An arc-shaped groove is formed along the longitudinal direction of the top surface of the pad. Straps are provided on both sides of the groove. An air tube is connected to the air bladder, and a sealing plug is provided at the end of the air tube furthest from the air bladder. The cross-section of the air bladder is triangular, and the height of the cross-section gradually decreases from the inside to the outside. The cross-section of the pad is trapezoidal, and the connection surface between the pad and the air bladder is compatible. While ensuring a clear and complete surgical field, this device is not only convenient to operate, saving time and effort, but also avoids excessive local pressure that could damage the skin and tissues, thus improving patient comfort.

An orthopaedic knee prosthesis (100) includes a tibial insert (104) and a femoral component (102) configured to articulate on the tibial insert. The tibial insert includes a lateral articular surface (122) and medial articular surface (124) that is asymmetrically shaped relative to the lateral articular surface. The medial articular surface is shaped to reduce anterior translation of a medial condyle of the femoral component, while the lateral articular surface is shaped to allow a lateral condyle of the femoral component to pivot, relative to the medial articular surface, along an arcuate articular path (806). Additionally, one or both condyles (112, 114) of the femoral component may include a femoral articular surface (110) having a curved femoral surface section defined by a continuously decreasing radius of curvature.

This application provides a method for calculating the lower limb force line angle in total knee arthroplasty, comprising: transforming a first skeletal mechanical axis at an initial position in an image coordinate system to a defined first prosthesis coordinate system; transforming the first skeletal mechanical axis in the first prosthesis coordinate system to a second prosthesis coordinate system when the first prosthesis rotates to the position of the condyle under weight-bearing; transforming the first skeletal mechanical axis in the second prosthesis coordinate system to the image coordinate system; and projecting the angle between the first skeletal mechanical axis and the second skeletal mechanical axis onto the coronal plane to obtain the lower limb force line angle. Using the condyle position as a transformation constraint, and through matrix transformation between the established skeletal coordinate system and the prosthesis coordinate system, the HKA angle is calculated intraoperatively, providing more accurate quantitative calculation results for total knee arthroplasty.

The application provides a knee joint prosthesis periprosthetic fracture fixation device and an assembling method. The knee joint prosthesis comprises femoral condyles, a tibial plateau and a tibial pad. The femoral condyles comprise an anterior condyle, two posterior condyles and an intercondylar fossa. The fixation device is installed at the intercondylar fossa. The fixation device comprises an intramedullary fixation needle and a connecting fixation block. The connecting fixation block is installed in the intercondylar fossa. The connecting fixation block is connected with the force applying end of the intramedullary fixation needle. The connecting fixation block comprises a main body. The main body has a top surface facing the tibial pad and a bottom surface opposite to the top surface. The bottom surface extends in a direction away from the top surface to form a protruding part. A through hole penetrating through the main body is formed in the protruding part. The through hole is used for accommodating and fixing the force applying end of the intramedullary fixation needle. The whole connecting fixation block is embeddedly installed in the intercondylar fossa. The original intercondylar fossa space of the PS type prosthesis is fully utilized to establish a precise channel of the intramedullary fixation needle. The periprosthetic fracture is fixed through structural cooperation.

This invention discloses a personalized occlusal surface design method for fully anatomical dentures, belonging to the field of computer-aided design technology. The method first obtains the instantaneous rotation center change rate sequence of the condyle after joint damping correction, the contact points on the guide ramp of the designed tooth, and the corresponding contact points on the functional ramp of the opposing tooth. Then, it obtains the normal curvature and the difference in normal curvature along the relative motion direction at the contact points and their corresponding points. Combining the instantaneous rotation center change rate after joint damping correction, the difference in normal curvature, and oral tissue material parameters, a multi-objective comprehensive evaluation coefficient is constructed. Finally, with the goal of minimizing this coefficient, the occlusal surface morphology of the designed tooth is iteratively optimized until the evaluation coefficients of all contact points meet a preset threshold. This invention, by introducing joint damping correction and a multi-objective optimization strategy, achieves personalized design of the denture occlusal surface, effectively improving the biomechanical adaptability, chewing efficiency, and long-term stability of the denture.

The application discloses a knock-in femoral condyle holder, which comprises a handle, one end of the handle is provided with a main rod, the handle and the main rod are connected through a quick-connection mechanism, one end of the main rod away from the handle is provided with a clamping block, one end of the clamping block away from the main rod is a femoral condyle prosthesis or a femoral condyle test mold, and the main rod is provided with a locking device. The knock-in femoral condyle holder can realize the function of holding the condyle in the middle and meet the more refined and convenient operation requirements without changing the test mold and the prosthesis. In addition, the clamping block can be locked without the test mold or the prosthesis, so that the clamping block can serve as a knock-in device to knock the prosthesis, and other devices need not be replaced.

A method of stabilizing fragments of a distal femur includes placing a fixation plate against the distal femur, securing a first portion of the fixation plate to a shaft of the distal femur, including inserting a first fastener through a first hole of the fixation plate, and securing a second portion of the fixation plate to a condyle of the distal femur, including inserting a second fastener through a second hole of the fixation plate. The first and second fasteners are substantially transverse to each other. A fixation plate and a bone fixation system are also provided.

The utility model relates to medical instrument technical field especially relates to a knee joint posterior cruciate ligament replacement type operation quick processing system tool, including intercondylar osteotomy module, guide module, hollow drill, bone gouge and hold component, intercondylar osteotomy module is integrally formed structure and has the anatomic feature of left and right same type number condyle test mould appearance superposition, intercondylar osteotomy module is equipped with guide slot, and the guide slot is surrounded by upper baffle and two side plates and forms guide limiting space, and guide module, hold component according to need can be detachably installed at guide limiting space, and hollow drill, bone gouge according to need can be detachably installed at guide limiting space or install on guide module. The utility model provides the instrument has realized the universal application of front condyle positioning plate in left and right side operation, and can satisfy the demand of quick switching between different osteotomy modes of saw osteotomy and bone drill osteotomy.

An implantable mandibular joint prosthesis includes a first implant part that has an artificial condyle that can be attached to a lower jawbone, a second implant part that has a joint surface that can be attached to a cranium and that forms an abutment for the artificial condyle The second implant part comprises includes a first component which is formed from a metal material and can be attached to the cranium, and a second component which is formed from a plastics material and forms the joint surface. The first component has a first connection surface and the second component has a second connection surface, wherein the first and second connection surfaces are mutually engagingly joined together.