16 results about "Acetabular component" patented technology

The utility model provides a combined acetabulum component separating force test device which comprises an installation box, a positioning assembly and a detection assembly. The positioning assembly comprises a first telescopic rod arranged in the mounting cavity, a clamping plate arranged on the telescopic rod and penetrating through the top wall of the mounting cavity, an arc-shaped positioning groove formed in the top wall of the mounting box and a sinking positioning groove formed in the clamping plate. The detection assembly comprises an L-shaped mounting frame arranged in the mounting box, a guide rail arranged on the L-shaped mounting frame, a tension and compression detection mechanism arranged on the guide rail and a torsion detection mechanism arranged on the guide rail, and through the arrangement of the tension and compression detection mechanism and the torsion detection mechanism, three tests can be completed through one device, so that the test is more convenient, and the test efficiency is improved. Due to the arrangement of the guide rails, the tension and compression detection mechanisms and the torsion detection mechanisms can be arranged on the guide rails or taken down from the guide rails, and a plurality of tests can be completed at the same time by arranging the tension and compression detection mechanisms and the torsion detection mechanisms on the guide rails.

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.

An acetabular component of an orthopedic joint prosthesis, comprising: an outer shell for attachment to the acetabulum; a liner at least partially provided within the outer shell to provide a contact surface for a femoral component of the orthopedic joint prosthesis; and an adapter at least partially provided within the outer shell, wherein the liner is at least partially within the adapter. The adapter allows the use of a wider range of liners with the given shell.

A prosthetic hip implant comprises a femoral component, an acetabular component, a liner, and ball bearings. The femoral component includes a stem for attachment to the patient's femur and a femoral head structure for articulation with a bearing surface. The acetabular component features a socket formation designed to receive the femoral head structure. The liner covers the exterior articulation surface of the socket formation, with one side in contact with the socket's exterior surface and the other side forming the bearing surface. Ball bearings are positioned between the femoral component and the bearing surface and are rotatably mounted within spaced parallel concentric grooves define in structure to transmit forces between the structure and the bearing surface.

An implant insertion tool for use during a surgical procedure to implant an acetabular cup component into a surgically-prepared acetabulum of a patient's hip includes a metallic elongated shaft, a removable polymeric grip, and a locking nut to secure the grip to the elongated shaft. Such a modular design allows the implant insertion tool to be dissembled prior to sterilization.

The utility model discloses an acetabular cup lining extractor, an acetabular cup and an acetabular cup suite, the outer surface of the acetabular cup comprises a first end face, the acetabular cup is further provided with a mounting cavity and a guide hole, an opening of the mounting cavity is located in the first end face and used for mounting a lining, and an opening of the guide hole is located in the first end face; the lining extractor comprises an abutting face and a wire part, and the abutting face is used for abutting against the first end face to apply knocking acting force to the acetabular cup; the guiding part is arranged on the abutting surface in a protruding mode and used for being inserted into the guiding hole so as to guide the abutting surface to abut against the first end face. According to the lining extractor, the guide part of the lining extractor is in guide fit with the guide hole of the acetabular cup, so that the abutting surface of the lining extractor can be more accurately abutted to the first end surface (namely the to-be-knocked part) of the acetabular cup, and the technical problem that the lining extractor is difficult to align to the to-be-knocked part on the acetabular component is solved.

An implant insertion tool for use during a surgical procedure to implant an acetabular cup component into a surgically-prepared acetabulum of a patient's hip includes a metallic elongated shaft, a removable polymeric grip, and a locking nut to secure the grip to the elongated shaft. Such a modular design allows the implant insertion tool to be dissembled prior to sterilization.

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.

Acetabular component of hip joint endoprosthesis

Functional patient-specific acetabular component alignment is important in total hip arthroplasty. A method for acetabular component alignment by calculating pelvic tilt from an anteroposterior radiograph of the pelvis of a patient may be replicated intraoperatively for patient-specific alignment. A system for automated generation of the pelvic tilt from an anteroposterior radiograph presented improves the efficacy and accuracy of total hip arthroplasty.

Bone-sparing hip resurfacing surgery using only an acetabular component in which the femoral head articulates, being only shaved to a spherical shape and cleared of osteophytes that could impinge on the acetabulum and so restrict the range of motion. The inner surface of the resurfacing cup is aspherical in shape creating an annular contact with the femoral head. The inner, articulating surface of the cup is ADLC or pyrolytic carbon coated to reduce friction and wear of the femoral head. The surgical approach significantly reduces surgery time by avoiding the use of the femoral resurfacing component. The cup is preferably of the double-shell type for cementless fixation, but it can also be made as a single shell for cementless or cemented fixation. Should a revision surgery due to wear of the femoral head become necessary, the cup can be retained and combined with a dual mobility femoral component.

A hip prosthesis that comprises an acetabular component and a femoral component. The acetabular component comprises a shell and optionally a liner. The shell has an approximate shape of a hollowed spherical cap, in which the shell comprises one or more magnets. 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 and comprises a spherical magnet that is rotatable within the spherical head. The acetabular component is configured to receive all or a portion of the spherical head of the femoral component. Further, 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.

This utility model belongs to the field of medical device testing technology and discloses a mechanical performance verification device for a combined acetabular component. It includes a mounting base, a testing component, and a clamping and positioning mechanism. The testing component is mounted on the mounting base. The clamping and positioning mechanism includes an electric push rod and a U-shaped lifting frame. The upper end of the U-shaped lifting frame slides through the top of the mounting base. Both ends of the upper part of the U-shaped lifting frame are equipped with clamping components that can adjust the clamping distance according to the diameter of the combined acetabular component. The top of the mounting base is equipped with a positioning component that can fully limit the arc-shaped bottom of the combined acetabular component. The positioning component is located between the two clamping components. This utility model, through its clamping components, can adjust the clamping distance according to the diameter of the combined acetabular component. The positioning component can limit the arc-shaped bottom of components of different sizes, adapting to various specifications of combined acetabular components and improving the versatility of the device.

An acetabular component of an orthopaedic joint prosthesis, the acetabular component having: an outer housing for mounting on the acetabulum; an inner liner disposed at least partially within the outer housing for providing a contact surface for a femoral component of the orthopaedic joint prosthesis; and an adapter disposed at least partially within the outer housing with the liner at least partially within the adapter. The adapter allows a larger range of liners to be used with a given housing.

Dual mobility hip prosthesis has a liner rim that recessed with respect to an acetabular cup rim thereof so that an adjacent contact surface of the neck impinges the acetabular cup rim at extreme positions without impinging the liner rim. Furthermore, the acetabular cup rim defines an inner contact face correspondingly angled to the adjacent contact surface of the neck at the extreme positions to reduce point contact loading between the acetabular cup rim and the adjacent contact surface of the neck. As such the present prosthesis tolerates prosthetic impingement between the rim of the acetabular cup and the neck of the femoral component by mitigating against point contact loading force whilst eliminating impingement of edges of the polymeric liner between an edge of the neck and the rim of the acetabular cup and also allowing for sufficiently deep acetabular componentry with reduced likelihood of dislocation.