7 results about "Articular fossa" patented technology

A muscle function preservation type total temporomandibular joint prosthesis includes an articular fossa member (1) and an articular head member (2) abutting against the articular fossa member (1). The articular head member (2) includes a mandibular trailing edge fixing plate (21), a sigmoid notch fixing plate (22) and an articular head portion (23). The mandibular trailing edge fixing plate (21) is connected to a bottom end of the articular head portion (23) and extends downwards, and has a plate-shaped structure and includes a mandibular-trailing-edge-surface attaching surface. The sigmoid notch fixing plate (22) protrudes from one side of the mandibular trailing edge fixing plate (21) and extends in a direction away from the mandibular trailing edge fixing plate (21), and has a plate-shaped structure and includes a mandibular-ramus-proximal-sigmoid-notch-portion attaching surface.

The invention relates to the technical field of minimally invasive surgery, in particular to a mandible condylar fracture bionic simulation trainer and a use method thereof. According to the technical scheme, the device comprises a profiling upper jaw part, a bionic lower jaw part, a left glenoid fossa, a skin, a right glenoid fossa, a bionic left profiling tissue and a bionic right profiling tissue. The right joint fossa is fixed in the fixing hole in the rightmost end, when the center locking piece is loosened, the center locking piece can slide in the corrugated hole, when the center locking piece is locked, the center locking piece is fixed in the corrugated hole, and the telescopic support assembly is fixed to the first main framework through the center locking piece. And meanwhile, the bionic lower jaw part, the bionic left profiling tissue and the bionic right profiling tissue are matched, so that the simulation accuracy is improved, detailed data are given to medical staff, and the occurrence of later-stage operation problems is reduced.

The present application belongs to the technical field of spinal surgery implants, and discloses a new lumbar facet joint prosthesis, which comprises a first fixed base and a second fixed base, a central auxiliary support module connecting the first fixed base and the second fixed base, two groups of joint modules, a joint socket and a joint head, the joint head is ellipsoidal, the joint head is arranged in the inner cavity of the joint socket, the joint head and the inner cavity of the joint socket are in clearance fit, a first opening and a second opening are arranged on the joint socket, and the height of the side wall of the joint socket near the central auxiliary support module on one side is higher than that on the opposite side. The two groups of joint modules symmetrically arranged are used for supporting and limiting the two sides of the vertebral body respectively, instead of the arrangement of a single central elastic connecting piece, so that more stable support is provided, and the stability of the prosthesis is improved; through the clearance fit of the ellipsoidal joint head and the joint socket, the two groups of joint modules are dynamically active, the multidimensional movement of the natural facet joint is simulated, and the movement mode of the lumbar vertebrae is more fitted.

Artificial socket (10) for a joint implant, wherein the socket (10) comprises a cup-shaped base body (12) with a rim (20) and a pole (24), and wherein the base body (12) has engagement elements (36) projecting towards the bone on an outer surface (14) facing a bone in the insertion position, wherein the base body (12) is coated at least partially on the outer surface (14) with an osteointegrative coating (56), wherein the engagement elements (36) have a first side surface (48) facing a plane (32) defined by the rim (20), and a second side surface (50) facing the bone, characterized in that the coating (56) on the first side surface (48) is thinner than on the second side surface (50) and / or that the engagement elements (36) are coated at least partially in such a way thatthat the coating (56) extends beyond the coating (56) on the first side surface (48) at its free ends in the direction of a plane (32) defined by the edge (20) and the engagement elements (36) with the coating (56) applied to them form an undercut (58) in a direction transverse to the plane (32).

A new type of artificial sitting, iliofemoral ligament and matching anti-dislocation total hip joint prosthesis, including artificial ligament, acetabular cup, acetabular liner and artificial femoral head, the acetabular liner is sleeved with acetabular cup outside, the acetabular liner is a semispherical shape with a plane surface, the center of the plane surface is provided with an inwardly concave joint cavity, the artificial femoral head is inserted into the joint cavity with interference, constituting a movable structure, a plurality of outward ligament fixing holes are arranged on the periphery of the plane surface of the acetabular cup, a nail channel is arranged on the femoral stem of the artificial femoral head, the ligament sleeve ring of the artificial ligament is fixed in the ligament fixing hole through the fixing device, the tail line of the artificial ligament passes through the nail channel on the femoral stem and is fixed on the femoral stem through the locking nail, constituting an anti-dislocation structure; the present application has the advantages of simple structure, close to human physiological structure, low production cost, easy production and manufacturing, can prevent dislocation, solves the pain caused by prosthesis dislocation to patients and doctors, and has significant social and economic benefits.

The invention discloses a manufacturing and testing method, system and equipment of a double-jaw digital biteplate and a medium. Preoperative masticatory muscle depolarization preprocessing is conducted on a patient, and temporomandibular joint soft and hard tissue three-dimensional data, face proportion data, dentition form data and mandibular dynamic movement track data of the patient are obtained; inputting the soft and hard tissue data into medical image processing software, correcting a condylar process position and virtually positioning the condylar process position to a central position or a muscle-bone stable position of a glenoid fossa in combination with a dentition overlay coverage condition, and obtaining corrected data; by taking the corrected condylar process position as a jaw position reference, the face proportion as a height constraint and the dynamic trajectory as a motion simulation basis, carrying out cooperative processing to generate a three-dimensional model of the biteplate; and manufacturing an entity according to the model, carrying out myoelectricity and occlusion pressure test on the wearer, judging the suitability, and feeding back to adjust the model and remanufacturing the test if the model is abnormal. The personalized adaptation precision, functionality and treatment reliability of the biteplate are improved.

The application discloses a kind of real-time CBCT guided centric relation determination method, system, equipment and storage medium. Upper and lower jaw dental arch and jaw three-dimensional data are obtained by intraoral scanning and CBCT scanning, and a virtual patient model is fitted and established;Obtain the spatial position relationship between motion acquisition marker and patient dentition;Use probe to pick up dental arch feature points, establish the spatial mapping relationship from motion acquisition marker to CBCT coordinate system;Real-time tracking of marker position is realized through electronic facebow system, and the position of condyle in glenoid cavity is dynamically displayed in real time on CBCT image based on spatial mapping relationship;Under the guidance of real-time visualization, the clinician preliminarily determines the centric relation position candidate in combination with clinical method;Guide the patient to carry out joint function movement, and monitor the joint function and masticatory muscle activity synchronously, and determine the final centric relation position after verifying the health of temporomandibular joint function.The application realizes chair-side real-time visualization and function verification, and significantly improves the diagnosis and treatment efficiency of jaw position determination.