31 results about "Joint replacement prosthesis" patented technology

Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.

Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.

A prosthesis anchor component is provided. The prosthesis anchor component has a mounting stud having an elongated body with a tubular distal end and a proximal end. The tubular distal end includes a tubular wall portion with an open leading end and a plurality of apertures extending through the tubular wall portion. The proximal end has a mounting interface for securing a joint interface onto the stud. A method is also provided.

A joint replacement prosthesis and procedure reduce the number of steps to complete a joint replacement. The joint replacement prosthesis comprises a ball and socket unit that fixes the ball in the socket prior to surgery. The unit is coupled to a bone structure in the patient and is coupled with a prosthesis that is fixed to another bone of the patient, such as a femoral implant fixed in a femur and providing a coupling at the end of a neck portion that is easily fit into a femoral head and acetabulum unit. A tether may be used to retain the ball in the socket and/or the ball may be retained by extension in the socket that do not restrict patient motion.

The invention relates to an orthopedic prosthetic device and a method of implanting such device. More particularly, the invention relates to a knee replacement prosthesis having femoral, patellar, and tibial components having surfaces for receiving bone cement and surfaces which promotes bone ingrowth.

The invention discloses total-knee-joint replacement prosthesis which comprises a femoral condyle, a tibia support, a tibia pad and a patella. The femoral condyle comprises an internal condyle, an external condyle, a joint surface, an intercondylar box and a condyle inside joint internal surface. The tibia pad is provided with a limiting stand column and glenoid cavities. The glenoid cavities define the shape of a glenoid cavity face. The shape of the glenoid cavity face is matched with the articular surface of the femoral condyle. The lower end face of the tibia pad is provided with a first groove and a second groove. The tibia support comprises a supporting disk with a fixing component. The upper surface of the supporting disk is provided with a first supporting pillar and a second supporting pillar which are matched with the tibia pad in a locked mode. The patella comprises a patella articular surface and a patella fixing stand column. The total-knee-joint replacement prosthesis has very good initial stability and long-term use stability, biocompatibility is improved, metabolism of bones is facilitated, resistance to subsidence of the tibia support, resistance to revolving resistance and long-term use stability are improved, the binding force of the tibia support and the tibia pad is further improved, and the service life of the knee joint is further prolonged.

The invention provides a multifunctional elbow joint replacement prosthesis which comprises a humerus assembly, an ulna assembly, a radius assembly and a pin shaft assembly. The humerus assembly comprises a humerus handle, a yoke and a capitulum humeri. The ulna assembly comprises an ulna handle, an ulna neck and an ulna head. The radius assembly comprises a radial head and a radial bone marrow needle. The pin shaft assembly comprises a pin shaft outer nail of a hollow barrel structure and a pin shaft inner nail inserted into the pin shaft outer nail. One end of the pin shaft inner nail is provided with an anti-disengagement piece used for preventing the whole pin shaft inner nail from entering the pin shaft outer nail. The other end of the pin shaft inner nail is provided with a locking piece. The pin shaft assembly enables the ulna assembly to pivot around a shaft and fixes the capitulum humeri to a first convex lug. The multifunctional elbow joint replacement prosthesis accords with human body daily behavior movement characteristics, has the good stability and safety, can achieve partial replacement or whole replacement, improves biocompatibility with the sclerotin, and is not likely to cause looseness or infection or instability or other complications and long in service life.

An intracorporeal portion of a percutaneous device for a joint disarticulation prosthesis or joint replacement prosthesis, the intracorporeal portion having an extracorporeal portion or having means for rigidly coupling directly to an extracorporeal portion, the extracorporeal portion being for location exterior to the skin, the intracorporeal portion having an articulating component for articulating with an articulating surface, wherein the articulating component is intracorporeal when installed in a human or animal subject.

The invention relates to the technical field of medical treatment and in particular relates to a bionic artificial temporal-mandibular joint replacement prosthesis. According to the bionic artificialtemporal-mandibular joint replacement prosthesis, in-growth and attachment of lateral pterygoid muscles can be realized, so that the motion range of the joint prosthesis is widened, and the defects that the pure mechanical joint has limited motion and burdens on lateral healthy joints are increased are overcome. Due to hydroxyapatite coating on the contact surface of socket prosthesis and bones and the porous titanium structure of the contact surface of mandibular prosthesis and bones, the bonding capacity of the prosthesis and bones is increased, and aseptic necrosis of bones caused by micromotion of the prosthesis is avoided, so that the using effect of the prosthesis is improved and the service life of the prosthesis is prolonged.

A bearing for a total or partial joint replacement prosthesis: the bearing having a body and a reinforcing element which strengthens the bearing and which forms an attachment member, and/or the bearing being formed at least partially from polymeric or composite material the bearing comprising a lower modulus portion and a higher modulus portion, one portion of the bearing being at least partially encased by the other portion of the bearing. Also provided is a method for of forming the bearing, and a total or partial joint replacement prosthesis comprising the hearing.

The invention relates to the technical field of medical apparatus and instruments, and provides an elbow joint replacement prosthesis. The elbow joint replacement prosthesis comprises an ulna handle and a humerus handle, wherein the ulna handle and the humerus handle can relatively rotate; an ulna liner is installed in the round hole of an ulna handle connecting end; the humerus handle is providedwith two round connecting parts; the inner side of the round hole of each round connecting part is independently provided with a humerus liner; a bayonet lock cover penetrates through the ulna linerand the two humerus liners and is clamped with one humerus liner; a bayonet lock penetrates through the bayonet lock cover; and the front end clamping hook of the bayonet lock is cooperated with the bottom surface of the groove of the bayonet lock cover. The elbow joint replacement prosthesis has the beneficial effects that the ulna handle and the humerus handle are in spherical surface semi-restricted connection, when the ulna handle and the humerus handle are prevented from vertically shaking, the ulna handle and the humerus handle can rotate and shake at a certain angle to disperse shearingstress, and a situation that a bone/ bone cement/ prosthesis interface becomes flexible due to the conducted shearing stress is avoided.

The invention discloses a 3D-printed hip joint replacement prosthesis. The 3D-printed hip joint replacement prosthesis comprises a hip joint main body and a fixing wing set arranged on the hip joint main body, wherein the hip joint main body is of a bowl shape, a center hole is formed in the center of the hip joint main body, a first connecting hole and second connecting holes symmetrically formed in the two sides of the first connecting hole are formed in a first side of the hip joint main body, and connecting lines of central points of the first connecting hole and the second connecting holes form an isosceles triangle; and the fixing wing set is arranged at the bottom of the peripheral wall of a hip joint main body ring body along the circumferential direction of the hip joint main body. According to the hip joint replacement prosthesis disclosed by the invention, the hip joint main body is fixed to a human skeleton through fixing wings, a screw inlet position of a screw is optimized, the hip joint replacement prosthesis is firmly connected with the skeleton, and the problem of shaking or shifting does not occur after long-term use.

The invention discloses a data acquisition device of a joint replacement prosthesis, which relates to the technical field of joint replacement and comprises a shell, a sensor, a system-on-chip and an antenna, the sensor, the system-on-chip and the antenna are arranged in the shell, and the system-on-chip is electrically connected with the sensor and the antenna. The system-on-chip is used for converting the electric signals collected by the sensor into corresponding data and sending the data to an external receiving device through the antenna. The data acquisition device is implanted into a body along with a prosthesis, corresponding information of human tissues around the prosthesis can be collected in real time through a built-in sensor, corresponding electric signals are formed, and the system-level chip reads the corresponding electric signals in real time, converts the corresponding electric signals into corresponding data and sends the corresponding data to an external receiving device through an antenna. In this way, the purposes of collecting data in real time and sending the data outwards are achieved, a doctor can look up related data through an external receiving device and understand the actual situation, and therefore it is avoided that a rehabilitation scheme which does not have the earth atmosphere is formulated.

The invention discloses an atlantoaxial lateral mass joint replacement prosthesis. The prosthesis comprises an upper lateral mass joint body and a lower lateral mass joint body, the upper lateral mass joint body is provided with a first screw used for being fixed to a first cervical vertebra atlas bottom lateral mass, and the lower lateral mass joint body is provided with a second screw used for being fixed to a second cervical vertebra atlas top lateral mass. Main bodies of the upper lateral mass joint body and the lower lateral mass joint body are arranged between the first cervical vertebra atlas and the second cervical vertebra atlas, and the contact parts of the upper lateral mass joint body and the lower lateral mass joint body form spherical contact.

The invention relates to a knee joint replacement prosthesis, and relates to the field of medical instruments. The knee joint replacement prosthesis comprises a femoral condyle, a tibia support and a tibia pad located between the femoral condyle and the tibia support, the cross section of the tibia pad is in a semicircular shape, and the tibia pad comprises a clamping part matched with the tibia support and an abutting part fixedly connected to one end of the clamping part; the tibia support is provided with a containing groove allowing the clamping part to be embedded therein. The fixing platform prosthesis has the advantages that when the fixing platform prosthesis is used for knee joint replacement, the selectable models of the femoral condyle in the operation are increased, and the coverage rate of the femoral condyle is increased; meanwhile, the tibia pad is fixed more firmly, micromotion generated by the tibia pad is reduced, abrasion caused to the tibia pad is reduced, and the probability of prosthesis failure is reduced.

The invention relates to the field of medical apparatuses and instruments, in particular to a joint replacement prosthesis. The joint replacement prosthesis comprises a prosthesis head part and a prosthesis lower part which are integrally formed, wherein the prosthesis head part is in an epiphysis shape, the prosthesis lower part is in a rod shape, both the prosthesis head part and the prosthesislower part are hollow structures made from non-degradable polymer materials, and the surface of the joint replacement prosthesis is sequentially covered with a non-degradable metal layer and a degradable metal layer. The joint replacement prosthesis is characterized in that the non-degradable metal layer is formed through physical vapor deposition or chemical vapor deposition. The joint replacement prosthesis meets the light-weight corrosion-resistant basic requirements, and also has the good osteocyte attachment capacity, and good combination between the joint replacement prosthesis and bonetissue can be achieved in short time when the prosthesis is implanted.