266results about "Acetabular cups" patented technology

A system for robot-assisted surgery includes a surgical robot having a robotic arm, an end effector coupled to the robotic arm, wherein the end effector is adapted to receive, translate, and orient a navigated surgical instrument; a camera tracking system adapted to intra-operatively track a pose of the navigated surgical instrument relative to a defined coordinate system; and a computer platform including a processor and a memory. In embodiments, the computer platform operative to display to a user an image of a target location on the patient and the pose of the navigated surgical instrument; and selectively control translation and orientation of the navigated surgical instrument based on a defined operational mode, to perform a surgical process under user control that comprises one or more of: reaming an acetabulum of the patient to a planned center of an acetabular prosthesis, or positioning the acetabular prosthesis in the reamed acetabulum.

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.

Various implementations include an end effector for a total hip arthroplasty (THA) procedure. An example end effector can include: an adapter for holding a surgical instrument, the adapter having an elongate body and a projection extending therefrom; a main body having: a proximal end including an interface for attaching to a robot arm; and a distal end including an elongate recess and a slot for connecting with the surgical instrument; and a connector adapted to secure the projection in the slot to securely attach the adapter to the main body.

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.

According to the technical scheme, the acetabular cup and the matched tool of the acetabular cup comprise the acetabular cup, the fine adjustment assembly, the liner and the tool. The acetabular cup is arranged on the outermost side, and a first opening is formed in the inner side of the bottom and connected with the fine adjustment assembly; the fine adjustment assembly is arranged between the acetabular cup and the liner and comprises a fixing part and an adjusting part, a second opening is formed in the fixing part, a connecting part is pushed through the second opening to enter the first opening in the acetabular cup to be connected and fixed, and a sliding rail and a fourth connecting part are arranged on the inner side of the fixing part; the adjusting part is a circular ring, the outer surface of the adjusting part is provided with a sliding ball in contact with the sliding rail, the upper surface of the adjusting part is provided with first sawteeth and a worm meshed with the first sawteeth, the two ends of the worm are symmetrically provided with a gear and a fifth connecting part respectively, and the fifth connecting part is hinged to a fourth connecting part on the fixing part to support the worm; second sawteeth are arranged on one side of the outer surface of the gasket and meshed with the gear on the adjusting part, so that deflection of the gasket is achieved.

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.

A three-dimensional (“3D”) printed orthopedic fixation implant can reduce stress shielding and / or enhance osseointegration. The implant can include: a head defining a proximal end of the implant; a tip defining a distal end of the implant; a core extending from the head to the tip, the core being elongate; and threads extending along at least a portion of the core. One or more functionally graded lattice structures can be propagated longitudinally and / or radially in at least portions of the core. A density of the one or more functionally graded lattice structures can have a varying longitudinal gradient and a varying radial gradient.

A method includes displaying, on a graphical user interface, a planned position of a virtual implant model relative to a virtual bone model of a bone. The virtual implant model includes a plurality of virtual screw holes offset from a central axis of the virtual implant model. The method also includes determining a planned rotational orientation of the virtual implant model by rotating, on the graphical user interface, the virtual implant model about the central axis of the virtual implant model such that the plurality of virtual screw holes rotate about the central axis. The method also includes controlling a robotic device to guide preparation of the bone to receive a physical implant in the planned position. The method also includes providing computer-assisted navigation configured to guide the physical implant into physical rotational alignment with the planned rotational orientation of the virtual implant model.

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.

A method of treating a patient in need of an orthopedic implant is described. The method includes obtaining the T-score or bone density of the patient's native bone at a site of implantation, said T-score or bone density being determined by a DEXA scan or other means of determining a T-score or bone density. The method further includes selecting an orthopedic implant that has about the same density as the native bone at the site of implantation, and implanting the orthopedic implant at the site of implantation.

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.

A hip navigation system is provided that includes a navigation device comprising one or more sensors configured to sense changes in orientation and rotation, a reference sensor device comprising one or more sensors configured to sense changes in orientation and rotation, and a femur sensor device comprising one or more sensors configured to sense changes in orientation and rotation. The hip navigation system is provided for navigating a cup toward target angles. The hip navigation system is provided for determining changes in leg length and / or joint offset. Methods of using the hip navigation system are provided. A graphical user interface of the navigation device is provided.

SUMMARY OF THE INVENTION An improved system and method for providing proper alignment of a patient's anatomy and hip joint components during hip replacement surgery is provided. In another embodiment, a hip joint navigation tool is provided that includes an anatomical joint surface with a bone-engaging portion. A registration tool is also provided that is coupled, e.g., removably, to the anatomical joint surface. A rotatable member is provided for rotation about a non-vertical axis when the tool is attached to a bone adjacent the hip joint and the registration tool is coupled to the anatomical joint surface. An anatomical structure-engaging probe is coupled to the rotatable member for rotation about the axis and is translatable so that the probe can be brought into contact with multiple anatomical landmarks during surgery. An inertial sensor is coupled to the probe to indicate an orientation relative to the landmarks, the sensor being disposed at a different orientation relative to the horizontal when the probe is in contact with the landmark.

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.

A reference device for application onto a patient, the reference device comprising: a support plate; a first positioning element extending from the support plate; a second positioning element extending from the upper support plate; a third positioning element extending from the upper support plate; an electronic direction monitor housing adapted to receive an electronic direction monitor; and a docking station adapted to receive the housing, thereby defining a reference point external to and relative to the patient's anatomy, wherein the first positioning element, the second positioning element, and the third positioning element are positioned to be pressed down onto the patient to provide a reference direction for the electronic direction monitor with respect to a predetermined anatomical location.

A surgical implant aperture insert for use in a surgical implant system; and a surgical implant system for use in joint arthroplasty is provided including an aperture and a surgical implant aperture insert. The insert increases the surface area of surgical components available for bone regrowth and can provide adaption means to allow the use of different fixings within the aperture.

A tensioner tool for assessing joint laxity is disclosed. The tensioner tool comprises a pair of pivotally coupled arms, each arm comprising a proximal handle portion, a distal portion, and an insertion tip selectively coupled to the distal portion. The pair of arms pivot between a compressed configuration for insertion within the joint and an expanded configuration for distraction of the joint by applying a force to the handles, thus spreading the insertion tips. The tensioner tool also comprises a force sensor configured to measure the force applied to the handle portion and a positional sensor configured to measure a separation distance between the pair of arms. The tensioner tool also comprises a processor configured to calculate a distraction force at the insertion tips based on the measured force and to calculate a tip distance between the insertion tips based on the measured separation distance.

A shaping instrument (11) including a first transfer mechanism (30), and a second transfer mechanism (40) connectable to a rotatable drive for effecting movement of a contoured body (20). The first transfer mechanism (30) can comprise a base swash plate (31) formed by an angular offset of a base swash plate (31) to an angled elongated tubular drive shaft (32). This effects a Single Point Centre Of Rotation (SPCOR) at (C) which is the centre of rotation around which the transfer mechanism rotates and is typically co-incident with the longitudinal axis (B) of the drive shaft (32). The second transfer mechanism is connectable to the contoured body and engageable with the first transfer mechanism wherein any precession or wobbling effect of the first transfer mechanism part causes at least one small local movement T of one or more parts of the contoured body in a rotational movement around a respective radial axis D offset to the SPCOR located centrally in the second transfer mechanism.

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.

There is disclosed an orthopaedic impactor, comprising: a strike assembly arranged to impart a force to an object; and a winding arranged to receive a current and thereby generate a magnetic field. The winding is arranged to interact with the strike assembly so that, in use, a magnetic field generated by the winding causes the strike assembly to move so as to impart the force to the object.

The utility model provides an acetabulum test mold batch processing clamp which comprises a mounting plate and a plurality of positioning columns, and the plurality of positioning columns are fixedly connected with the mounting plate. A plurality of locking columns are mounted on the mounting plate, and the locking columns and the positioning columns are coaxially arranged; a locking column is arranged on the positioning column, a locking piece is arranged in the locking column, a first limiting area used for fixing the test mold is formed between the locking piece and the positioning column, the locking piece is used for tightly pressing the test mold on the locking column, and the locking piece is detachably connected with the locking column; the positioning column is provided with a limiting surface, and the positioning column and the locking column are coaxially arranged; according to the utility model, the problems of long processing time and low replacement efficiency due to the need of repeatedly aligning and clamping a plurality of test molds when the test molds with different sizes are fixed by a processing clamp in the prior art can be solved.

A chuck for a powered surgical impactor can include a first body insertable into the powered surgical impactor and defining a first bit bore, a second body adapted to receive the first body; and a third body receivable at least partially within the second body and defining a second bit bore. The third body can define a lock projection extending radially inward into the second bit bore; and the third body and the second body can be adapted to rotate relative to the first body to move the lock projection between an unlocked position, in which the lock projection is located to allow insertion of a surgical instrument into the chuck, and an unlocked position, in which the lock projection is located to prevent removal of the surgical instrument from the chuck.

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.