1190 results about "Socket hip" patented technology

Accessory for implantation of a hip joint endoprosthesis, with a manipulation cup, a manipulation joint head with means for orienting the manipulation cup in the acetabulum, and with a device to represent the correctly oriented position of the manipulation cup such that by means of this device a bone-milling cutter and an impact instrument can then oriented appropriately for placement of the prosthesis cup.

A minimally-thick orthopedic prosthesis is described which closely matches the end of a bone of a joint after that bone end has been minimally reshaped and resurfaced by an orbital or lineally oscillating orthopedic resurfacing tool in the minimally invasive orthopedic surgical repair or reconstruction of hip, knee, ankle, shoulder, elbow, wrist, and other joints. The original ligament tensions and the varus and valgus alignments of the joint are preserved and the marrow cavities of bones are not invaded avoiding the dangers of blood clots, heart attacks, and other complications.

An orthopedic device includes a patient-specific acetabular guide that may be used for preparing an acetabulum of a patient to receive an acetabular implant. The acetabular guide has a body with an outer three-dimensional surface configured to match an acetabulum of a specific patient's hip joint designed from data of the patient's hip joint. The acetabular guide may further include a peripheral annular rim.

An orthopedic component having multiple layers that are selected to provide an overall modulus that is substantially lower than the modulus of known orthopedic components to more closely approximate the modulus of the bone into which the orthopedic component is implanted. In one exemplary embodiment, the orthopedic component is an acetabular shell. For example, the acetabular shell may include an outer layer configured for securement to the natural acetabulum of a patient and an inner layer configured to receive an acetabular liner. The head of a femoral prosthesis articulates against the acetabular liner to replicate the function of a natural hip joint. Alternatively, the inner layer of the acetabular shell may act as an integral acetabular liner against which the head of the femoral prosthesis articulates.

An orthopedic device and method of use are provided that incorporate complex, non-spherical articulating surfaces to allow a greater available range of motion compared with existing artificial shoulder joint and artificial hip joints. According to some embodiments, complex, non-spherical articulating surfaces can be incorporated on a humeral head and/or glenoid of a shoulder prosthesis. In other embodiments, complex, non-spherical articulating surfaces can be incorporated on the acetabulum and/or femoral head of a hip prosthesis. These non-spherical surfaces can be used to adjust constraint, joint thickness, soft tissue tension, moment and arc of motion, and in doing so, influence motion.

A system for monitoring the ambient conditions of a mammalian joint, and particularly a joint that has been instrumented with a joint endoprosthesis includes a sensor supported by a component of the joint endoprosthesis. The system includes a transmission element that is also supported within the body of the patient, preferably within the endoprosthesis. The transmission element transmits a signal indicative of the sensed ambient condition within the instrumented joint. For example, the sensor can be a temperature sensor used to evaluate the temperature within a joint, such as a hip joint, during activity or exercise by the patient.

This prosthesis comprises a humeral or femoral component and an intermediate component. The concave surface of articulation of the humeral or femoral component is formed by a plate connected by a neck to a part of this component adapted to be anchored in the humeral or femoral medullary cavity. The intermediate component is provided with a member for retaining the humeral or femoral component in a position where the plate is in abutment against the first convex surface of the intermediate component. The retaining member defines a non-circular passage in which the neck is adapted to be displaced as a function of the movements of the humeral or femoral component with respect to the other components of the prosthesis. The retaining member defines with the first convex surface of articulation of the intermediate component a volume for receiving a part of the plate projecting radially with respect to the neck.

A modular orthopedic hip prosthesis having three main components: a stem, a proximal body, and a neck. The components are removeably connectable and selectively adjustable. The neck is rotationally adjustable about the stem, and the proximal body is both rotationally and axially adjustable about the stem. A collet and locking member hold and lock the proximal body to the stem.

The invention discloses an exoskeleton rehabilitation robot for rehabilitation of a lower limb walking function and a control system and method thereof. The robot comprises a backrest, a hip joint power source, a hip joint component, a waist component, a thigh bar component, a knee joint power source, a knee joint component, a shank bar component, an ankle joint component and a foot pedal. According to the lower limb exoskeleton rehabilitation robot, a driving scheme is designed by utilizing a bionics principle, so that the initiative degree of freedom of the ankle joint is increased; through initiatively pulling the heel tendon muscles of the patients, the rehabilitation speed of the ankle joint function is improved; the waist component, a connection rod mechanism and the foot pedal adopt a carbon fiber composite material, so that the structure weights and volumes are lightened while the strength is kept; and a non-polar adjustable function is set for the waist width, thigh length and shank length, and flexible bandages are equipped, so that the wearing comfort level requirement of the users is satisfied to the greatest extent. The robot disclosed by the invention not only can be used as a tool for riding instead of walk for the patients with walking disability, but also can help the stroke patients to obtain walking ability again through initiative training.

Broaching instruments divided into multiple parts to reduce the size of incisions necessary to perform a total hip arhroplasty, minimizing trauma to tissue surrounding the hip joint. One approach is to divide the broach head into first and second segments for insertion through posterior and anterior incisions, respectively, and interconnection within the patient. Methods of preparing the proximal medullary canal of a femur for receiving a hip stem implant utilize the multi-part broaching instruments and two-incision techniques to introduce the broaching instruments into the patient for broaching the canal in preparation for receiving the implant.

The invention reduces wear in total joint articulations by modifications of the shape of either component of the kinematic pair, so as to result in an annular surface contact between the two components. Fluid trapped between the two components within the inner contour of the annular contact area is pressurized under load due to elastic deformation of the components and exuded out through inter-articular gap over the surface of contact, aiding in lubrication and reducing the wear. Reduced to practice for a total hip joint with UHMWPE-metal pair, the wear rate tested in a hip joint simulator up to five million cycles was reduced by factor seven to fifteen compared to conventionally shaped components.

An improved hip prosthesis includes an acetabular cup bearing component constructed from a relatively hard and high strength ceramic material for articulation with a ball-shaped femoral head component which may be constructed from a compatible ceramic or metal material. In one form, the acetabular cup further includes a ceramic porous bone ingrowth surface adhered thereto for secure ingrowth attachment to natural patient bone.

The invention discloses an intelligent exoskeleton carrying system for a lower limb and a control method thereof. The system is provided with structures such as a detection control system, a girdle ring, a back frame connected with the girdle ring, a leg supporting device, and the like. The leg supporting device comprises a thigh connecting rod, a knee joint connecting piece, a crus connecting rod and a foot connecting piece which are movably connected in turn, wherein the knee joint connecting piece is provided with a knee joint torsion spring; two ends of the knee joint torsion spring are connected with the thigh connecting rod and the crus connecting rod respectively; the crus connecting rod is provided with a guy cable; the other end of the guy cable is connected with a guy cable driving device which is connected with the detection control system through a transmission line; the foot connecting piece is provided with a signal sensor which is connected with the detection control system through a signal acquisition line; and the top end of the thigh connecting rod is movably connected with a hip joint and connected with the girdle ring through the hip joint. The system can be coupled to human body, advance along with the human body, help the human body to load and carry and reduce energy consumption and fatigue feeling of the human body, and has the advantages of reasonable structure, complete function and strong practicability.

A robot mounting apparatus for a hip joint operation robot capable of firmly attaching a hip joint operation robot to a femur in order for operation robot to perform an accurate femoral canal cavity operation, and a hip joint operation robot system using the same. The robot mounting apparatus for a hip joint operation robot, comprising: a fixing means for fixing to a femur, including: a bar having a predetermined length and being arranged in perpendicular to a femur; and a seizing means having a predetermined shape for seizing the femur, the seizing means forms at an end of the bar; an installation unit having a predetermined shaped for installing the operation robot thereon, the installation unit is positioned near an end portion of the femur; and a link having a predetermined length for connecting the installation unit and the bar of the fixing means, the link is installed in parallel with respect to a longitudinal direction of the femur. The hip joint operation robot system employs the robot mounting apparatus and the robot firmly mounted on the robot mounting apparatus.