195 results about "Cotyloid Cavity" patented technology

A hip implant system includes an artificial acetabular cup and an artificial acetabular liner. The liner includes or consists of a metal or an alloy, and is coated at least in sections with a ceramic coating.

The invention discloses a data processing method and device for a prosthesis fixing nail, a storage medium and electronic equipment. The method comprises the following steps: performing three-dimensional reconstruction according to medical image data of a target object and an acetabular cup prosthesis to obtain an initial three-dimensional model; according to a current nail hole of the acetabular cup prosthesis in the initial three-dimensional model, generating a first implantation parameter of a first fixing nail; according to the first implantation parameter, performing simulated implantation operation in the initial three-dimensional model to obtain a simulated three-dimensional model; and performing safety evaluation on the simulated three-dimensional model, and determining target implantation parameters of the fixing nails of the acetabular cup prosthesis according to the first implantation parameters under the condition that a safety evaluation result represents that the safety evaluation is passed. According to the method and the device, the problem that the accuracy of determining the implanting position and direction of the fixing nail is relatively low due to the fact that the implanting position and direction of the fixing nail of the acetabular cup are determined depending on artificial experience in related technologies is solved.

A prosthetic acetabular liner including a wall that extends from an apex portion to a circumferential rim portion, the wall having: a convex outer surface; a threaded spigot extending outwardly from the apex portion; a concave inner bearing surface; and an opening surrounded by the circumferential rim portion. The liner is rotatably insertable into an acetabular outer shell having a corresponding threaded apical hole, and rotation of the liner in the shell causes the threaded spigot to engage the threaded apical hole and thereby draw the liner into the shell.

The acetabular cup removal device for artificial hip joints according to an embodiment of the present invention comprises a main shaft and a cutter section that cuts the acetabular region while being rotated by the main shaft. The cutter section includes a cutter tilting unit capable of tilting along the acetabular region around an imaginary tilting axis, a cutter mounting unit coupled to the cutter tilting unit in a manner that allows relative sliding toward or away from the imaginary tilting axis, and a cutter detachably mounted on the cutter mounting unit. The cutter tilting unit comprises a first through-hole penetrating along the imaginary tilting axis, a connecting bar fixed at both ends to the cutter mounting unit, and a leaf spring fixed at both ends to the connecting bar with a central portion between the two ends.

An implant system has an acetabular cup with an interior bearing surface with a central bearing zone that is smooth and devoid of holes or indentations. The cup also has a peripheral bearing zone that contains insertion tool engagement holes. The engagement holes are only present in the peripheral zone and have specific shapes and dimensions. The system includes an insertion tool with retractable interlocks that fit within the engagement holes to position the cup during implantation. The central bearing zone bears the main forces during articulation, while the peripheral zone withstands minor forces. The location of the engagement holes has a negligible effect on the cup's performance. The cup can be made of ceramic and may have a coated exterior surface for osseointegration.

An acetabular cub system is configured to be secured to a pelvis and may include an acetabular cup and a plurality of bone fasteners. The acetabular cup may include a bone engaging surface and an articulating surface, as well as a plurality of lobed fastener apertures extending from a first opening at the articulating surface to a second opening at the bone engaging surface. The plurality of bone fasteners may be insertable through the lobed fastener apertures to secure the acetabular cup to the pelvis. Each of the plurality of lobed fastener apertures may include a central aperture configured to receive a first bone fastener of the plurality of bone fasteners and one or more aperture lobes intersecting with the central aperture configured to receive a second bone fastener of the plurality of bone fasteners. The central aperture may be larger than the one or more aperture lobes.

An acetabular bone defect filling block design method based on a force conduction path comprises the steps that a mechanical conduction target path is determined, specifically, the stress condition of a hip joint in a gait cycle is simulated on the basis of a three-dimensional model of a pelvis of a patient, a bone defect area Vdefect and a three-dimensional model of an implanted supporting bracket which are obtained in advance, and the mechanical conduction target path is determined; determining an expected force flow conduction path from the acetabular cup loading area to the host bone main bearing area; a filling space determining step: calculating a residual defect space Vremain formed after the support is implanted; a filling block main body generation step: taking the residual defect space Vremain as a design boundary, taking following of the expected force flow conduction path and realization of matching of the structural rigidity and the host bone as an optimization target, generating a filling block main body three-dimensional model with an internal support truss through a topological optimization algorithm, and steering a strong gluteus column by depending on an incomplete acetabular ring, and a fixed foundation which cannot be shaken is provided. An intelligent structure with the optimal mechanical property is generated by converting empirical shape matching into simulation driving generation type design.

The utility model discloses an acetabular cup taking-out device for a hip joint revision operation, and belongs to the technical field of medical instruments. Comprising a grab handle, a power input shaft and an output shaft are rotationally arranged on the two sides of the grab handle respectively and fixedly connected, a positioning ball capable of rotating along with the output shaft is arranged at the end of the output shaft, a movable arc-shaped blade is detachably arranged on the outer side of the positioning ball, and the arc-shaped blade can turn to the bottom of the positioning ball. A blade adjusting assembly capable of driving the arc-shaped blade to move is arranged on the output shaft. The acetabular cup taking-out device for the hip joint revision operation is simple in structure and convenient to operate, the complex hip joint revision operation is simplified, accurate cutting with a predictable result can be conducted by designing the arc-shaped blade with the replaceable size, meanwhile, bone loss can be reduced to the maximum extent, the operation effect is improved, and the hip joint revision operation efficiency is improved. The risk of acetabular fracture in the operation is also reduced, and the practicability is high.

Methods include tracking one or more of a leg length or an offset in a patient during a total hip arthroplasty (THA) procedure performed using a navigated surgical system, with an expandable trial femoral assembly. Certain methods include registering a pelvis of the patient to the navigated surgical system; and in various embodiments measuring a leg length or registering a femur to the navigated surgical system. An expandable trial femoral assembly is affixed to a prepared and broached femur of the patient; and the expandable trial femoral assembly is reduced into an acetabular prosthesis. A navigated driver may then be used to adjust an expansion extent of the expandable trial femoral assembly. The navigated surgical system may measure the leg length and the offset in the patient based on the movement of a reference element of the femur relative to a reference element of the pelvis.

Methods provide computer-navigation assisted total hip arthroplasty (THA) procedures. Such procedures include the use of a navigated instrument, e.g., a navigated reamer construct or a navigated inserter construct to prepare the acetabulum and insert an acetabular shell, a camera tracking system adapted to track a pose of the navigated inserter or reamer construct relative to the patient in use, and a computer platform adapted to receive pose tracking information and generate and display navigational guidance for the user.

An apparatus and method for inserting a femoral broach or femoral stem or acetabular cup into a bone. The apparatus includes at least one closed loop insertion mechanism to provide impacts on the associated handles of the broach, stem, or the acetabular cup; at least one sensor to sense a series of impacts, including impact angle, and to provide real-time feedback of the alignment and / or condition of the bone; and a processor operably connected to the at least one sensor. The processor includes an algorithm that receives the real-time feedback to control the force, frequency, and alignment of the impacts by the at least one closed loop insertion mechanism.

The invention provides an adjustable acetabulum prying-out experimental device, and belongs to the technical field of combined acetabulum component separation experiments. A T-shaped sliding groove is formed in the lower end of the eccentric prying-out base and used for being fixedly connected with a workbench through screws; the crow plate lifting device comprises a lifter support, a connecting block, a threaded lifting rod, an adjusting nut, a first M6 thread and a sliding block, and modularization and function cooperation of the testing system are achieved by integrating the eccentric prizing base, the crow plate lifting device, the acetabulum assembly loading device and the adjustable crow plate device; by means of the structural design, the device can meet the multi-dimensional adjustment requirements of the moment arm distance, the supporting point position and the height at the same time, and the problem that a traditional device is insufficient in adaptability due to the single structure is solved. Precise cooperation among the components not only improves operation flexibility, but also ensures structural stability in the testing process through high-strength connection.

An apparatus, system, and method for determining a position of a hip prosthesis in a bone of a patient includes determining a set of contact points between a femoral head of a femoral prosthesis and a cup liner of an acetabular cup to be implanted into a patient based on a mechanics model. The mechanics model is indicative of mechanical motion of a hip exhibited during performance of a set of ADL or at corresponding functional positions of the patient. In some embodiments, a mathematical model may be generated based on a plurality of sets of contact points determined using the mechanics model and subsequently used to determine a resultant set of contact points.

The utility model discloses an air pressure hip joint which comprises an acetabular cup, an acetabular liner is movably arranged on one side of the acetabular cup, a femoral head prosthesis is movably arranged on one side of the acetabular liner, the femoral head prosthesis is integrally spherical, one side of the femoral head prosthesis is a plane, a center hole is formed in the plane side of the femoral head prosthesis, and a femoral stem prosthesis is movably arranged in the center hole. A central hole is formed in the femoral head prosthesis, an air pressure cavity is formed in the inner wall of the femoral head prosthesis in the axial direction, the air pressure cavity is communicated with the central hole of the femoral head prosthesis, a micro air pump is fixedly arranged on the inner wall of the femoral head prosthesis, and a pressure sensor is fixedly arranged on the inner wall of the air pressure cavity. The air pressure in the hip joint is accurately adjusted, the air pressure is properly reduced, the pressure between articular surfaces is reduced, and wound healing is facilitated; in the later period of rehabilitation, along with recovery of the joint function of the patient, the air pressure can be gradually increased, the stability and supporting force of the joint are improved, and the patient can better adapt to daily activities.

An implant removal tool designed for efficient and precise removal of an acetabular cup or similar implants is disclosed. The tool includes an outer shaft and an internal shaft configured to move relative to the outer shaft. The internal shaft is operably connected to a cutting assembly comprising multiple inwardly curving, wedge-shaped blades. The blades transition from a retracted position to a closed position, forming a semicircular cutting path slightly larger than the outer diameter of the implant. This configuration allows for controlled rotation of the blades around the implant's outer surface, effectively severing surrounding bone while minimizing damage to adjacent bone and soft tissues. The tool may include interchangeable components to accommodate implants of varying sizes, ensuring adaptability across surgical scenarios. Additional features, such as a helical thread mechanism or drill compatibility, enhance usability and precision during revision surgeries.

The invention provides an acetabular prosthesis which comprises an acetabular cup, an acetabular prosthesis body, a first connecting piece, a second connecting piece and a third connecting piece, wherein a first mounting hole is formed in the outer wall of the acetabular cup; the connecting structure is arranged in the first mounting hole in a position adjustable mode, the connecting structure comprises a connecting stud, the connecting stud is provided with an extending position extending out of the first mounting hole and a retracting position retracting into the first mounting hole, and the axis of the connecting stud intersects with the axis of the acetabular cup; the driving structure is rotatably arranged on the acetabular cup, and when the driving structure rotates, the driving structure drives the connecting stud to rotate and enables the connecting stud to be switched between the extending position and the retracting position. According to the technical scheme, the problem that the implanting process of the acetabular prosthesis is tedious in the prior art is effectively solved.

The application relates to a three-dimensional adjustable bone-integrated half-pelvis prosthesis, which comprises a split assembled customized sacrum bone-integrated base, an acetabular cup assembly, a customized pubic bone-integrated base, a sacrum side pelvis ring support assembly and a pubic side pelvis ring support assembly; one end of the customized sacrum bone-integrated base is connected with the sacrum, and the other end is connected with the acetabular cup assembly through the sacrum side pelvis ring support assembly; one end of the customized pubic bone-integrated base is connected with the healthy pubic bone, and the other end is connected with the acetabular cup assembly through the pubic side pelvis ring support assembly; when the acetabular cup assembly, the sacrum side pelvis ring support assembly and the pubic side pelvis ring support assembly are assembled, the anteversion angle of the acetabular cup assembly can be adjusted relative to the sacrum side pelvis ring support assembly and the pubic side pelvis ring support assembly. The half-pelvis prosthesis and the pelvis of the patient constitute a complete and stable pelvis ring structure, the stability of the half-pelvis prosthesis is improved, and the accuracy and convenience of the prosthesis installation during the operation are greatly improved.

The invention relates to the technical field of surgical measurement, in particular to a real-time measurement method and system for the length and eccentric distance of lower limbs in hip replacement. According to the technical scheme, the method comprises the following steps that anatomical feature points on the two sides of a patient are obtained, wherein the anatomical feature points at least comprise the positions of anterior superior iliac spines on the two sides and the positions of high points on the inner side and the outer side of ankle joints on the two sides; and according to the obtained anatomical feature points, calculating and establishing a normal position reference plane of the patient. By means of the non-invasive body surface positioning and optical tracking technology, the length and the eccentric distance of the lower limb can be accurately measured in real time in the hip replacement. The method comprehensively considers the change of both sides of the acetabulum and the femur, avoids the trauma risk of traditional invasive navigation and the deviation of single measurement, and provides a quantitative basis for doctors through intraoperative dynamic data feedback and preoperative, intraoperative and postoperative whole-course evaluation, thereby improving the surgical precision and reducing the occurrence rate of complications with unequal lengths of lower limbs.

The present application relates to a method for extracting an acetabular facies lunata model, in particular to a method for extracting an acetabular facies lunata model based on mixed surface fitting, which solves the technical problem of low precision and robustness of the existing method for extracting an acetabular facies lunata model. The present application realizes rough extraction of the acetabular facies lunata model through spherical surface fitting, and then realizes accurate extraction of the acetabular facies lunata model in combination with ellipsoidal surface fitting, which combines the stability of spherical surface fitting and the anatomical fidelity of ellipsoidal surface fitting. In particular, in the case of complex pathologies such as hip dysplasia, the present application can still maintain high extraction accuracy, and improve the accuracy and reliability of clinical diagnosis and surgical planning. Meanwhile, in the iteration process of ellipsoidal surface fitting, an adaptive fault tolerance threshold is introduced, which effectively solves the problems of sensitivity to noise and strong parameter dependence of traditional methods, and has better robustness in processing complex acetabular morphology.

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.

The application relates to a hip joint prosthesis, which comprises an interposition acetabulum prosthesis and a femoral head reconstruction device. The interposition acetabulum prosthesis is connected with the acetabular fossa of the pelvis stably through an interposition acetabulum cup, a fixing screw and an interposition acetabulum liner, and the adaptability and stability are enhanced through multiple designs such as petal opening and damping parts; the femoral head reconstruction device comprises a joint friction surface prosthesis and a bone ingrowth support cage, and the reconstruction and stable support of the femoral head are realized. The application achieves the technical effects of improving the stability and durability of the hip joint prosthesis, reducing the postoperative discomfort of patients and promoting the growth of bone tissue.

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.

The invention provides an acetabular prosthesis which comprises an acetabular cup, an acetabular prosthesis body and an acetabular prosthesis body, and a containing part communicated with the outer surface of the acetabular cup is arranged in the acetabular cup; the outward-extending fixing piece is movably arranged in the containing part and is provided with a fixing position extending out of the acetabular cup and an avoiding position located in the containing part, and an acute-angle included angle or a right-angle included angle is formed between the moving direction of the outward-extending fixing piece and the axis of the acetabular cup; and the operating part is arranged on the acetabular cup and is in driving fit with the overhanging fixing part, so that the overhanging fixing part is switched between the fixing position and the avoiding position. According to the technical scheme, the problem that the acetabular cup fixing effect is poor in the prior art is effectively solved.

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.

An image diagnostic device (100) comprises: a bony acetabular line detection unit (153) that detects, on the basis of a pixel value of each pixel of an ultrasonic image acquired by an acquisition unit (152), a bony acetabular line in the ultrasonic image; and a baseline detection unit (154) that detects, on the basis of the pixel value of each pixel of the ultrasonic image acquired by the acquisition unit (152), a straight line indicating an iliac outer wall in the ultrasonic image and detects a baseline parallel to the detected straight line indicating the iliac outer wall and passing through a bony acetabulum or a lower end of the iliac outer wall at an end portion of the bony acetabular line detected by the bony acetabular line detection unit (153).

The application discloses a kind of artificial hip joint fatigue test device, including frame, it is characterized in that: the bottom of the frame is provided with Z direction oil cylinder, the top of Z direction oil cylinder is connected with the bottom of simulated acetabulum seat, the middle part of frame is provided with middle support plate, the middle support plate is provided with guide sleeve, the simulated acetabulum seat is slidably connected between linear bearing and guide sleeve, the top of the simulated acetabulum seat is provided with lubricating liquid cup and simulated acetabulum, the simulated acetabulum is located inside lubricating liquid cup, the simulated acetabulum is connected with artificial femoral head spherical surface in artificial hip joint, the top of the frame is provided with top support plate, top support plate is provided with horizontal displacement mechanism, and the execution end of horizontal displacement mechanism is movably connected with the top of artificial femoral stem in artificial hip joint by universal joint.

1. Name of the product in this design: Icons for the graphical user interface of a robot-assisted surgical system for electronic devices. 2. Purpose of this design: An electronic device. 3. The key design features of this product are: a graphical user interface drawn with solid lines. 4. The image or photograph that best illustrates the design's key features: the front view. 5. Purpose of the graphical user interface: This overall interface is used to operate the robot-assisted surgical system, such as operating the robot-assisted surgical system to perform hip replacement surgery. The area to be protected is the icon on it, and different icons are selected to display different images or patterns on the screen. For example, selecting icon A will display a visualization of the main components and screws previously implanted in the patient; selecting icon B will allow you to use a probe to draw the surface of the acetabular cup after the implanted components have been removed, at which point the interface will display a visualization of the pelvis and the real-time position of the probe; selecting icon C will allow you to use a reamer to evaluate the surface of the acetabular cup after the implanted components have been removed, at which point the interface will display a visualization of the pelvis and the real-time position of the reamer. 6. Human-computer interaction methods of graphical user interface: Interaction can be carried out by clicking, pressing icons, etc. 7. Other situations requiring explanation: This design is a partial appearance design, and the part shown by the dashed line in the view is not the part claimed in this application.

Disclosed in the present disclosure are an acetabular prosthesis angle positioning device for total hip arthroplasty. The device includes a telescopic tripod, a spherical scale instrument, a first fixing member, a main operating rod, a connecting device and an auxiliary operating rod. The spherical scale instrument includes a transparent spherical housing and a connecting ball clamped in the transparent housing, scale marks are arranged on the transparent spherical housing, and mark points fitted to the scale marks are arranged on the connecting ball; the main operating rod is connected to the connecting ball; and the main operating rod is connected to the auxiliary operating rod through the connecting device, and the auxiliary operating rod is hollow.

The utility model discloses an acetabular fossa positioning tool for hip joint surgery, and relates to the technical field of total hip joint replacement. The damping device comprises a mounting frame, a mounting hole is formed in one side of the mounting frame, a damping ball joint is mounted on one side of the mounting frame, a ball body is mounted in the damping ball joint, a connecting rod is fixedly connected to one side of the ball body, a supporting rod is arranged on one side of the connecting rod, and the supporting rod is fixedly connected to the other side of the mounting frame. An extension rod is arranged on one side of the supporting rod, and a fixing shell is arranged on one side of the extension rod. According to the utility model, the pressing block is pressed downwards, the spring is compressed under stress, then the pressing block descends into the positioning groove, and then the extension rod is dragged to enable the movable rod to move in the supporting rod in a limited manner; and the pressing block is moved to the interior of the next clamping groove and then is reset to the interior of the clamping groove by virtue of the elasticity of the spring, so that the current extending distance is positioned, and the effect of conveniently adjusting the use length is achieved.