133 results about "Joint replacement" patented technology

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).

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.

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.

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.

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.

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 utility model relates to a kind of dislocation-preventing nursing appliances for total hip replacement in the art of joint replacement nursing, including waist belt, the waist belt outside fixed with bracing plate, bracing plate both sides are equipped with connecting plate, two connecting plates bottom are equipped with leg protector, two leg protectors are connected by connecting assembly, for fixing leg, the bracing plate and connecting plate junction are equipped with limiting component, the limiting component includes with the fixed rotating plate of connecting plate one end, the rotating plate outer wall is fixed with rotating block, the bracing plate side close to rotating plate is equipped with two baffle, two baffle are located rotating plate outside, for the leg movement is limited. The utility model is convenient for fixing and controlling leg, avoid patient excessive activity hip joint, to avoid hip joint secondary injury.

The present application relates to the technical field of surgical robot control, and a laser osteotomy forming assisted ankle joint replacement surgery robot control method and system, comprising: using a surgical robot to cut and shave a simulated ankle bone to obtain an original osteotomy depth and a target sound wave signal group, identifying an osteotomy laser feature group of the target sound wave signal group, adjusting an original laser parameter group to obtain a replacement laser parameter group, performing a laser osteotomy test based on the replacement laser parameter group to obtain an adjusted osteotomy depth and an adjusted sound wave signal set, identifying an adjusted laser feature group set of the adjusted sound wave signal set, calculating a correlation intensity value, and determining a target laser parameter group set based on the correlation intensity value. The present application can improve the stability and accuracy of the laser osteotomy forming assisted ankle joint replacement surgery robot in cutting and shaving under complex geometric and complex material conditions, and improve the intelligent degree of the surgical robot control.

The present invention relates to a tibial sensor pin insertion guide for robotic total knee arthroplasty and, in particular, comprises: a tibial contact part configured such that the bottom surface contacting the medial slope of the tibia is inclined upward at an angle of 30-40 degrees on both sides with respect to a center line; and a first pin insertion tube formed to penetrate the posterior side of the tibial contact part and to be inclined upward at an angle of 45-55 degrees with respect to the longitudinal direction of the tibial contact part. The present invention has the effect of preventing the sensor pin inserted into the tibia to mount a sensor during robotic total knee arthroplasty from damaging the peroneal nerve passing through the outer side of the tibia during the insertion process.

The present application relates to the technical field of surgical robots, and particularly relates to a handheld hip replacement surgery robot, which comprises a shell, a driving interface, a locking part, a base fixedly sleeved on the periphery of the driving interface, extrusion blocks and an adjusting ring, wherein the extrusion blocks are circumferentially arranged at the front end of the base and jointly define a central passage with the inner cavity of the base for receiving a handle of a surgical instrument; the adjusting ring is threadedly sleeved outside the base, and the inner wall of the adjusting ring is formed with extrusion surfaces matched with the outer surfaces of the extrusion blocks; the locking part is configured to, after the handle of the surgical instrument is inserted into the central passage, rotate the adjusting ring to drive the adjusting ring to move axially along the base, convert the axial displacement of the adjusting ring into synchronous radial extrusion force applied to the extrusion blocks through the interaction between the extrusion surfaces and the outer surfaces of the extrusion blocks, force the extrusion blocks to produce centripetal elastic deformation, and thus realize the multi-point uniform coating and rigid clamping of the handle of the surgical instrument; and an adjustable holding part is installed at the bottom of the shell.

A system for confirming registration of a bone involved in a joint replacement procedure is provided. The system includes a three-dimensional (3-D) bone model of the bone registered to a bone location, a visible light camera, and a display. The visible light camera captures images of the bone in the camera's field-of-view (FOV). The display is configured to display the captured images of the FOV and an image of the 3-D bone model, where the displayed location of the image of the 3-D bone model corresponds to the location of the 3-D bone model registered to the bone location. The registration may be confirmed if the displayed location of the image of the bone as captured by the visible light camera corresponds to the displayed location of the 3-D bone model.

This application relates to the field of medical device technology, specifically to an extramedullary positioning distal femoral osteotomy device for knee replacement, comprising an osteotomy plate, an axial indicator, a rotating component, and a reference plate. The osteotomy plate has a reference end face and an abutment end face, with a cutting suture and pin holes provided on the reference end face. The axial indicator is rotatably mounted on the reference end face; the rotating component is rotatably mounted on the reference end face; the reference plate is slidably mounted on the rotating component, and the reference plate can slide on the rotating component in a direction away from or close to the rotation axis of the rotating component, with the reference plate perpendicular to the reference end face. In this application, the axial indicator determines the direction of the patient's femoral axis, ensuring that the movement of the osteotomy plate is consistent with the direction of the femoral axis, thereby improving the accuracy of the cutting position during surgery. The rotating component and the reference plate allow the surgeon to adjust according to the preoperatively determined angle of the prosthesis articular surface, enabling precise matching of the cutting suture angle with the prosthesis articular surface, further improving the precision of the surgery.

Prosthetic ankle replacements, prostheses, and associated methods of implanting prosthetic ankle and other joint replacements. In one form, a tibia stem has a geometry to facilitate implant installation while providing means to transfer load over a larger surface area through a press-fit, scratch-fit or cortical fit, thus lowering the contact stresses at the tibia-metal implant interface. The design and its implantation procedure also address minimization of misalignment. A talus element presents a partial-hemispherical surface; a tibial element which is to be affixed within the tibia, having an elongated stem part which extends into and within a canal of the tibial inner cortex, an intermediate body part which smoothly widens in radius toward an end which is a base to the tibial element, the base having a concavity formed therein shaped to match the partial-hemispherical surface of the talus element with a plastic cap between the two.

The invention discloses a knee joint replacement surgery navigation system. Relates to the technical field of medical treatment, and comprises a pre-operation processing unit used for determining a gradient pore model corresponding to a target object according to a knee joint medical image of the target object; the intra-operation processing unit is used for determining target pose information of an operation tool based on the multi-modal acquisition data in the implantation process of the personalized knee joint prosthesis, and performing reconstruction processing on the knee joint three-dimensional model of the target object based on the target pose information to obtain a processed knee joint three-dimensional model; and the postoperative processing unit is used for monitoring the knee joint state of the target object based on the implantable sensor after the personalized knee joint prosthesis is implanted, and executing a corresponding target early warning strategy according to abnormal information of the knee joint state under the condition that the knee joint state is detected to be abnormal. According to the invention, the problem of low positioning accuracy of a knee joint replacement surgery navigation system in the prior art is solved.

The present disclosure provides an implant, a corresponding method of implantation, and a method of using the same that can be used in orthopaedic joint replacement arthroplasty or hemiarthroplasty and / or an orthopaedic joint resurfacing arthroplasty or hemiarthroplasty. The implant can include a fin portion for receipt in a corresponding slot formed in bone, and the fin portion can support an articulation portion that can be used in resurfacing and replacing portions of articulation surfaces of a joint.

The invention relates to the technical field of medical instruments, in particular to a positionable 3D printed elbow joint prosthesis structure which comprises an upper prosthesis and a lower prosthesis, and a connecting assembly used for connecting the upper prosthesis and the lower prosthesis is arranged between the upper prosthesis and the lower prosthesis; the connecting assembly comprises a connecting piece arranged at one end of the lower prosthesis, a fixing shaft is fixedly connected to the connecting piece, one end of the upper prosthesis is hinged to the fixing shaft, and the lower prosthesis swings on the fixing shaft; the connecting piece is provided with an adjustable positioning assembly used for limiting the swing angle of the lower prosthesis. In an artificial elbow joint replacement operation, the 3D printing technology is used for achieving adaptation of the prosthesis to the distal humerus and the proximal ulna of the patient, and meanwhile the limiting angle can be customized according to the elbow joint movement range of each patient.

The invention provides a human body model for a knee joint replacement simulation operation, and relates to the field of human body models. The human body model for the knee joint replacement simulation operation comprises a base and a knee joint model, a driving motor is fixedly arranged at the midpoint of the bottom end face in the base, a driving shaft is fixedly arranged at the output end of the driving motor, a mounting seat is fixedly arranged at the upper end of the driving shaft, and an electric telescopic rod is fixedly arranged on one side of the outer wall of the mounting seat. A supporting mechanism is fixedly arranged at the midpoint of the upper end face of the mounting base and comprises a first supporting rod and a second supporting rod, the first supporting rod and the second supporting rod are connected through a folding assembly to achieve 90-degree overturning, and the folding assembly comprises a first rotating shaft. According to the knee joint human body model, flat-lying type operation scene simulation can be achieved, the anthropomorphic bending and stretching effect can be achieved, and therefore operation of a replacement simulation operation and simulation judgment of operation success are facilitated.

This invention relates to the field of medical care technology and discloses a shape memory alloy (NiTi) hip replacement proximal femoral anti-fracture device. It includes a fitting body, with a first clamping arm fixedly disposed at the mid-front end of the fitting body. A fourth connecting mechanism and a sixth connecting mechanism are fixedly disposed at the front end of the fitting body, symmetrically arranged on the upper and lower sides of the first clamping arm. This invention is simple to operate, provides firm fixation, and is practical and reliable. NiTi shape memory alloy possesses shape memory effect, superelasticity, and good biocompatibility. Using NiTi shape memory alloy as the raw material to prepare the encircling device, it is in a flat, extended state at low temperatures and recovers its designed curved shape after heating, firmly and effectively encircling the lesser trochanter. It is mainly applied in hip replacement surgery for elderly patients with femoral neck fractures and osteoporosis, effectively preventing proximal femoral splitting during femoral prosthesis wear.

The present disclosure provides an implant, a corresponding method of implantation, and a method of using the same that can be used in orthopaedic joint replacement arthroplasty or hemiarthroplasty and / or an orthopaedic joint resurfacing arthroplasty or hemiarthroplasty. The implant can include a first fin portion and a second fin portion for receipt in a first slot and a second slot, respectively formed in bone, and the first fin portion and the second fin portion can support an articulation portion that can be used in resurfacing and replacing portions of articulation surfaces of a joint.

The utility model discloses a reverse shoulder joint prosthesis connecting piece which comprises a main installation assembly, a positioning assembly is arranged on one end face of the main installation assembly, a plurality of main fixing assemblies are arranged on the main installation assembly, and a connecting assembly is arranged on the end face, away from the positioning assembly, of the main installation assembly. And a shoulder glenoid ball head is arranged on the connecting assembly. The reverse shoulder joint prosthesis connecting piece has the advantages that the reverse shoulder joint prosthesis connecting piece is used for prosthesis replacement of the shoulder blade side in reverse shoulder joint replacement and treatment of rotator cuff injuries, the occurrence of shoulder blade lower incisura can be effectively prevented, and meanwhile different eccentric shafts can be selected when the reverse shoulder joint prosthesis connecting piece is matched with different patient conditions.

The invention discloses a method and system for intelligently recommending prosthesis parameters in hip joint replacement surgery, and relates to the technical field of hip joint prosthesis parameter recommendation, and the method comprises the steps of 1, information acquisition and analysis, 2, prosthesis material analysis and 3, prosthesis material and parameter confirmation. Personal information, hip joint pathological information, hip joint prosthesis material information and rehabilitation information of each historical patient are sorted and concluded to obtain a medical information set of each historical patient, and a preoperative information set of a target patient is matched with the medical information set of each historical patient; the method comprises the following steps: acquiring a target patient, acquiring a hip joint prosthesis material recommendation table of the target patient, verifying the material parameters of each prosthesis material and the reference parameters of the target patient to obtain a recommended material, and finally compensating the reference parameters based on the correction parameters of the recommended material, thereby improving the hip joint prosthesis matching rate of the patient and the postoperative prosthesis survival rate.

An ankle arthroplasty implant system and method for installing into a resected ankle is provided including a multi-component tibia stem, a tray implant that includes side pockets extending into the tray implant. The tray implant further includes a proximal surface configured to engage the multi-component stem, and a distal side, including a recess. A talar dome implant is also provided that includes a convex proximal articular surface, an anterior side, a posterior. The ankle arthroplasty implant system further includes a polymer insert configured to be inserted in the tray implant recess.

The invention discloses a joint replacement full-stage self-adaptive Ag-DLC coating and a preparation method thereof, the coating comprises a bio-friendly substrate, a titanium bonding layer and an Ag-element-doped Ag-DLC functional layer, the Ag element in the functional layer is embedded in a DLC carbon skeleton in the form of Ag nanoparticles, the size of the Ag nanoparticles is 1-35 nm, and the doping amount is 2-40 at.%. According to the invention, the DLC coating with the nanocrystalline / amorphous composite structure characteristic is constructed by doping the Ag element with the anti-bond characteristic, so that the synergism of functions such as mechanical bearing, abrasion resistance, antibacterial property and biocompatibility can be realized. By means of controllable release of the Ag nanoparticles, self-adaptive response of functional characteristics of the metal joint implant in the whole service stage can be achieved, the requirements of the coating on the antibacterial performance and biocompatibility in the early postoperative stage can be met, and reliable anti-abrasion protection and osteogenesis promoting functions can be provided for the stable postoperative service stage.