238 results about "Joint replacement" patented technology

Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device, a reference sensor device, and at least one orthopedic fixture. The surgical orientation device, reference sensor device, and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, or otherwise to assist in an orthopedic procedure(s).

Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device and at least one orthopedic fixture. The surgical orientation device and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, to distract a joint, or to otherwise assist in an orthopedic procedure or procedures.

A method of ankle replacement includes forming an anterior cut in a bone and forming a stem hole in a distal end of the bone. The stem hole is formed using a plurality of broaches positioned against the distal end of the bone through the anterior cut. A first portion and a second portion of a stem implant are inserted into the stem hole through the anterior cut in the bone. The first portion is coupled to the second portion using a coupling device inserted through the anterior cut in the bone. The stem implant is impacted into the stem hole using an offset impactor.

Systems and methods are provided for performing tensionable knotless surgical procedures. A suture locking device that includes a one-way locking mechanism may be utilized for tensioning and locking one or more strands of suture during the surgical procedure. The one-way locking mechanism may be established by one or more locking barbs of the suture locking device.

The invention discloses a method for predicting periprosthetic infection of an artificial joint after a rheumatoid arthritis operation, and belongs to the technical field of medical treatment, the method can be applied to risk prediction of periprosthetic infection (PJI) of the artificial joint after the rheumatoid arthritis operation, and the method comprises the following steps: carrying out feature selection through a Boruta algorithm; an integrated machine learning algorithm is developed based on a genetic algorithm and an SMOTEENN algorithm in combination with machine learning for risk prediction, so that the accuracy and practicability of PJI risk prediction after joint replacement of a rheumatoid arthritis patient are improved. According to the rheumatoid arthritis artificial joint postoperative periprosthetic infection risk prediction method, a more accurate prediction and personalized treatment scheme can be provided for a doctor, and preoperative management of joint replacement of a rheumatoid arthritis patient is optimized, so that PJI is prevented to the greatest extent, and the joint function and life quality of the patient are improved.

Disclosed are prosthesis systems and methods that provide ways by which the articulating surfaces of the implant can be exchanged such that the anatomic surfaces can be converted to reverse surfaces, while not exchanging the fixation components. Also disclosed herein are methods by which the surgeon can implant an inset anatomic articulating glenoid implant whereby at a later date, can remove the anatomic articulating surface and replace it with a reverse articulating surface such that the primary means of fixation remains well fixed in the glenoid fossa at the moment of articular exchange.

A computer-implemented method for comparing medical images may include obtaining image data produced by multiple imaging devices indicative of anatomical features associated with an arthroplasty procedure, preprocessing the image data, including projecting three dimensional image data produced by a first imaging device of the multiple imaging devices to a plane represented by two dimensional image data produced by a second imaging device of the multiple imaging devices, identifying one or more landmarks associated with the anatomical features for comparison between images in the image data, comparing the identified one or more landmarks across the images to determine whether the images represent different individuals, and producing a notification indicative of a result of the determination of whether the images represent different individuals.

Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device, a reference sensor device, and at least one orthopedic fixture. The surgical orientation device, reference sensor device, and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, or otherwise to assist in an orthopedic procedure(s).

A method for simulating and selecting an implant for optimized insertion or joint replacement during a surgical procedure on a patient includes the steps of: reading at least one implant parameter, in particular an implant dimension and / or a weight restriction, of a selected implant model; calculating, based on the at least one implant parameter, simulated loads due to predefined forces and momenta at and on the implant mode; determining, based on the at least one implant parameter, whether load limits of the implant model are adhered to in the simulated loads; and, outputting, via a display device, visual confirmation of a selection of the implant model if the load limits are adhered to, or outputting a visual warning before selection of the implant model if the load limits are exceeded. An implant assistance system and a computer-readable storage medium are used to perform the method.

Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device and at least one orthopedic fixture. The surgical orientation device and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, to distract a joint, or to otherwise assist in an orthopedic procedure or procedures.

The embodiment of the invention is suitable for the technical field of medical treatment, and provides a preoperative planning method and medical device.The method comprises the steps that according to a first three-dimensional model corresponding to a target skeleton, the feature axis of the target skeleton and the feature point of the target skeleton are determined; according to a preset space coordinate system and the feature axis of the target skeleton, adjusting the pose of the target skeleton of the first three-dimensional model to obtain a second three-dimensional model; and determining a target osteotomy direction and a target osteotomy position in the second three-dimensional model according to the feature points, the feature axis and the osteotomy planning parameters. By adopting the method, the time required by the knee joint replacement operation can be shortened.

The invention discloses a unicondylar joint replacement tibial plateau vertical osteotomy positioning device, relates to the technical field of tibial replacement positioning, and provides the following scheme that the unicondylar joint replacement tibial plateau vertical osteotomy positioning device comprises a base, and two up-and-down position adjusting pieces are arranged on the surface of the top of the base in an up-and-down stacked mode. According to the technical scheme, the tibia fixator and the up-down position adjusting piece are arranged, the tibia is clamped and fixed through the tibia fixator, it is ensured that the tibia does not slide in the operation process, the silicon rubber case and the pressure sensor are arranged on the portion, making contact with the tibia, of the clamp, and the clamping force can be monitored while the surface of the tibia is prevented from being damaged. The vertical position adjusting part can adjust the clamping position of the clamp on the ankle, and the osteotomy angle adjusting part is additionally arranged to enable the linear laser transmitter to change the angle, so that rays with angles are projected on the tibia, a doctor can be helped to finely adjust the angle according to actual needs, and accurate positioning is ensured.

The invention discloses an artificial temporomandibular joint replacement bone trimming device, and relates to the technical field of joint prostheses, the artificial temporomandibular joint replacement bone trimming device comprises a positioning plate similar to a temporomandibular joint in shape, a prosthesis used as an artificial temporomandibular joint replacement bone is arranged in the positioning plate, and an osteotomy guide plate assembly used for osteotomy and positioning of the prosthesis is arranged in the positioning plate; a prosthesis grinding assembly is further arranged on the positioning plate; the right-angle threaded rod structures are driven to be close to or far away from each other by rotating the adjusting rotary drum, so that osteotomy grooves among the articular fossa guide plate, the articular head guide plate and the connecting plate are adjusted, positioning screws penetrate through the guide plates and positioning holes in the prosthesis for positioning, and sick part excision and prosthesis implantation operation are performed. The rack is driven by the driving gear to rotate along the positioning plate, the edge of the prosthesis is ground through the bone file, and ground powder is sucked and recycled; the device has the advantages of being high in operation efficiency, good in safety, convenient to use and simple in structure.

An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A number of methods for using the surgical instruments to prepare the bones is also disclosed.

The invention discloses a method and system for predicting the occurrence rate of allogeneic blood transfusion in the joint replacement perioperative period of an elderly patient, and belongs to the technical field of medical data processing, and the method comprises the steps: selecting potential factors from the historical clinical information of the patient; related factors are obtained by analyzing the influence degree of the potential factors on blood transfusion indications in the perioperative period of joint replacement; performing control variable analysis on the potential factors to screen out independent risk factors; in combination with related factors and independent risk factors, allogeneic blood transfusion evaluation indexes are obtained; and calculating an allogenic blood transfusion incidence prediction value of the target patient according to the allogenic blood transfusion evaluation index through a preset allogenic blood transfusion incidence prediction model. Therefore, by implementing the method and the device, the problem that in the prior art, other factors possibly causing the allogenic transfusion risk of the elderly patient are not considered, so that the calculated allogenic transfusion occurrence rate is inaccurate or the prediction time is too late, and reasonable blood use planning for the perioperative period of the patient cannot be realized can be solved.

The present invention discloses an anti-slip hook device for hip replacement, which is in the field of hip replacement technology. The device comprises an operating table and a hook, a fixing mechanism fixedly mounted on the operating table and used to fix the hook, and a connecting mechanism used to connect the fixing mechanism and the hook, and capable of adjusting the position of the hook relative to the fixing mechanism. The present invention provides multiple sets of connecting mechanisms and hooks on a fixing mechanism to pull the hook, thereby replacing the pulling of the hook by medical staff, reducing the workload of medical staff, and increasing the stability of the hook pulling process, thereby preventing the hook from slipping and affecting the surgery.

A control method for an arthroplasty surgical robot includes: capturing a bone image, transmitting the image to a computer system, and acquiring image data of a bone; selecting a suitable prosthesis model and placing it on a diseased joint for matching, wherein the overlapping part between the model and the bone is the part that needs to be removed and replaced; mounting signal sources; capturing a bone image again, including the signal sources and the joint part; establishing a coordinate system using the signal sources as the origin, and calculating and memorizing an interface between the model and the bone overlapping part and the coordinates of the interface in the coordinate system; and receiving the coordinates by a surgical robot, and obtaining the positional coordinates by the surgical robot of a part of the diseased joint that needs to be removed, and performing a surgical operation by the surgical robot.

A method and system for guiding joint replacement procedures based on functional stability analysis of a joint. The method comprises communicatively connecting to a plurality of sensors worn by an individual at muscles in a joint area and performing an initial measurement that evaluates strength and activity level of the muscles. The initial measurement includes a recording of data values from the plurality of sensors during a preoperative testing procedure. The initial measurement is compared with reference data, wherein the reference data includes measurements of healthy people with normal muscle function. The method further comprises generating joint replacement recommendations based on the comparison.

A prosthetic stem is configured to reduce the perioperative and intraoperative risk of catastrophic medical complications and death that may be caused by BCIS. The prosthetic stem includes one or more internal channels that are configured to self-regulate intramedullary pressure within a prepared bone channel as the stem is inserted into the channel, thus reducing the likelihood of BCIS without sacrificing biomechanics and maintaining a reliable and repeatable implantation process. The stem includes a head and a body, wherein the head is configured to serve as a joint replacement and the body is configured for insertion into the prepared bone channel of a patient. One or more internal channels in the stem are configured to control the pressure within the prepared bone channel during insertion of the stem into the channel, particularly by forming a path through which excess cement may flow as the stem proceeds into the prepared bone channel. By so limiting pressurization of cement during this process, the risk of BCIS complications and other potential harmful effects are reduced while still maintaining sufficient fixation of the prosthetic stem in the prepared bone channel.

The utility model belongs to the technical field of medical instruments, and particularly relates to a knee joint replacement operation position adjustable device which comprises a base, moving wheels and a fixing rod are arranged on the base, an adjusting rod is arranged at the outer end of the fixing rod in a sleeved mode, a through hole is formed in the adjusting rod, and a second fastening bolt penetrates through the through hole to be connected with the fixing rod in a screwed mode. The top end of the adjusting rod is connected with a clamping groove formed in the top seat in a clamped mode, the top seat is further provided with a screw hole and a moving groove, a third fastening bolt is connected with the screw hole in a screwed mode, a screw rod is horizontally arranged in the moving groove, one end of the screw rod penetrates through the moving seat to be connected with a rotating handle, and threads of the inner wall of the moving seat are matched with threads of the outer wall of the screw rod. A supporting seat is rotationally connected to the moving seat, an adjusting plate is inserted into the top seat and connected with a baffle, the affected limb of a patient can be fixed through the device, the labor intensity of medical workers can be reduced, and the stability of body position keeping can be guaranteed.

The present invention provides a universal and / or convertible glenosphere and / or glenosphere shoulder joint replacement system and method. [Solution] An implant component is provided. The implant component includes one of a glenosphere component having a concave outer surface and a glenosphere component having a convex outer surface. The system may also include one of a first base plate having a central boss portion extending from the bottom surface and a central opening through which it is positioned, or a second base plate having a central boss portion extending from the top surface and a central opening through which it is positioned. An anchor boss having a central opening through which it is positioned is provided. The system may include a central compression screw configured to reliably compress the first base plate, the second base plate, or the anchor boss against the patient's bone by being fixed through the central opening.

The invention discloses an intelligent joint replacement revision operation system and method based on CBCT and optical navigation, and the system comprises an imaging device which is used for collecting the positive and lateral two-dimensional images of a femur region and an ankle joint region of an affected limb and the three-dimensional image of a knee joint region, and reconstructing the three-dimensional models of the femur and the tibia; the optical tracking equipment is used for acquiring poses of the first tracing equipment and the second tracing equipment in real time; the key point acquisition module is used for acquiring three-dimensional positions of a femoral head central point and an ankle joint central point in the positive and lateral two-dimensional image and acquiring femoral inner and outer upper condyle points and a tibia marrow cavity point in the three-dimensional model; the affected limb section extraction module is used for obtaining the far-end section, the anterior section and the posterior section of the femur in the knee joint area and the plateau section of the tibia in the knee joint area; and the planning execution module is used for determining the target pose of the new implant according to the corresponding section, and performing planning execution according to the target pose. According to the invention, the accuracy and safety of the joint replacement revision operation can be improved.

The invention discloses a hip joint replacement operation leg supporting instrument which is placed on an operating bed during use and sequentially comprises a leg fixing support, an upper universal joint, a telescopic supporting rod, a lower universal joint and a support structure from top to bottom. The leg fixing support is used for at least supporting the thigh part, close to the knee joint, of the affected side leg; the telescopic supporting rod telescopically moves and is used for completing inward folding and outward unfolding actions, and the support structure forms a containing space for containing lower legs and is arranged on a bed body when used; the upper universal joint independently rotates to complete the actions of internal rotation and external rotation; and the lower universal joint and the upper universal joint are matched to rotate so as to complete buckling and stretching actions. The two universal joints are matched with one telescopic supporting rod to complete the actions of buckling and stretching, adduction and abduction, and internal rotation and external rotation; and when the telescopic supporting rod is in the locking state, the supporting effect is achieved, and when the two universal joints rotate independently or rotate together, an operator only needs to easily control the joints to rotate.

A total knee replacement implant having an anatomically representative femoral component that is based on an average knee geometry model determined from scans of multiple people. The implant can be customized for a given patient by scaling the average knee geometry according to one or more measurements (e.g. AP and ML) of the patient's knee. The implant can be formed by 3D printing or any suitable fabrication technique.

Systems, methods and apparatuses including an insert having a body with a plurality of bladders therein, a proximal surface and a distal surface. Two or more of the plurality of bladders are in fluid communication with one another. The plurality of bladders are expandable and contractible in volume. The proximal surface shapable by a change in the volume of one or more of the plurality of bladders. The proximal surface is configured to interface with a first arthroplasty implant of the patient. The distal surface is spaced from the proximal surface by the body and is configured to interface with a second arthroplasty implant of the patient.

The invention provides a lower limb fixing device for knee replacement surgery in the orthopedics department and belongs to the technical field of medical equipment. Comprising a bottom box, a fixing assembly used for fixing the legs of a patient is installed at the top of the bottom box, the fixing assembly comprises two first thigh plates, two first shank plates and two foot boxes which are symmetrically arranged at the top of the bottom box, and a second thigh plate is slidably clamped in one end of each first thigh plate. Through cooperation of the fixing assembly, the adjusting assembly and the positioning assembly, it can be ensured that the leg position of a patient is accurate and stable in an operation, the stretching assembly can promote recovery of knee joints after the operation, the postoperative rehabilitation effect of the patient is overall improved, and meanwhile the stretching assembly is additionally arranged, so that the postoperative rehabilitation effect of the patient is improved. The postoperative knee joint recovery process of a patient is more scientific and efficient, the overall recovery effect is optimized by reducing unhealthy symptoms such as muscle stiffness of the whole body, and the defect that traditional postoperative recovery only depends on drugs and passive methods is overcome.

A bone registration method and system for joint replacement surgery, based on a VSF surface in a preoperative coordinate system generated from preoperative bone image data and a source point set SPS in an intraoperative coordinate system generated from point data collected from the patient's actual bone surface during surgery, determines the transformation relationship between the preoperative and intraoperative coordinate systems through initial and precise registration. The method includes: a first step: selecting multiple corresponding point pairs from the source point set SPS and the VSF surface, performing initial registration based on Singular Value Decomposition (SVD), and obtaining the initial transformation matrix; and a second step: performing precise registration based on the initial transformation matrix using the ICP method. Each ICP iteration employs a least-squares optimization method that minimizes the sum of squared distances between each point in the transformed source point set SPS and the corresponding projection points in the projection point set PSPS. The algorithm stops when the error is less than a set value or the number of iterations reaches a set value.

The embodiment of the invention provides a robot control method, a robot control device and a robot, which are applied to an application scene in which a robot needs to be in rigid contact with a target, such as fine surgical operations such as orthopedic joint replacement and dental implantation of a surgical robot. The control method comprises the steps of obtaining contact force data of the robot; filtering the contact force data according to the change rate of the contact force at the current moment so as to determine preprocessed contact force data; servo control parameters of the robot are determined according to the preprocessed contact force data, a self-adaptive admittance control model and a speed Weil method numerical integration algorithm; and controlling the robot to work according to the servo control parameters of the robot. In the filtering processing process of the contact force data, the filtering intensity can be dynamically adjusted according to the change rate of the contact force at the current moment, tool bounce or tremor is avoided when the robot makes contact with a rigid target, and the working stability, precision and safety of the robot are improved.

The application discloses a robot-assisted joint replacement surgery accurate positioning device, which comprises a machine arm body, a lower limb arm and an upper limb arm arranged on the lower limb arm, an adjusting assembly, a positioning component, a first joint, a rotating shaft body and a matching shaft body, and rotating members arranged on the lower limb arm and the upper limb arm. The machine arm body, the adjusting assembly and the angle transformation assembly are cooperatively matched, the machine arm body provides basic bearing and multidimensional motion support for surgery positioning, and flexible coverage of a surgery area is realized through rotation and stretching of the large arm.

The present invention relates to the technical field of medical devices applied to artificial knee joint replacement surgery, and discloses a pressure measurement device, a preparation method and a pressure measurement equipment. Among them, the pressure measurement device is used to measure the pressure between artificial knee joint prostheses, and includes a substrate, a plurality of sensing units arranged on the surface of the substrate, and a packaging layer covering the sensing units. The substrate is arranged between the femoral component and the tibial component. The sensing units are arranged on one side of the substrate facing the femoral component, and at least can cover the area where the surface of the substrate contacts the bicondyles of the femoral component. The sensing unit includes a bottom electrode layer, a piezoelectric material layer and a top electrode layer arranged in a direction away from the substrate. The sensing unit is configured to convert the pressure applied by the femoral component to the surface of the substrate into an electrical signal and transmit it to an external signal processing device for analysis and processing to determine the pressure information on the surface of the substrate.