1942results about "Knee joints" patented technology

Knee replacement prosthesis are provided, comprising a plurality of sensors and at least one of a femoral component, a patellar prosthesis and a tibial component.

The present disclosure includes examples of an implant system configured for targeted joint resurfacing in which only an area including the osteochondral defect is resected, wherein the area resected occupies an area smaller than an entire joint surface. The implant system can include a monolithic first implant with 3D printed metal and a second implant including a plastic portion overmolded onto a metal portion. The metal portion of the second implant also includes 3D printed metal. The first and / or second implants include solid metal portion(s) and porous metal portion(s). In an example, the first implant can be a femoral implant and the second implant can be a tibial implant. The first and second implants can be used on their own or in tandem.

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes an articular surface, and the femoral component includes a femoral articular surface having decreasing radii of curvature posteriorly. The articular surface of the tibial insert includes an increased anterior lip to improve stability of the femoral component.

Systems and methods for intraoperative implant fit analysis and longevity prediction for a prosthetic implant to be integrated with the physiological tissue of a patient, the method comprising the steps of: collection of data via a plurality of sensors situated in proximity to the tissue and implant and a plurality of data sources; determining tissue and implant state and morphology based on the collected data; generating compatibility information between the tissue and implant based on the determined tissue and implant state and morphology; processing compatibility information into a form adapted for evaluation against a pre-determined comparator; generating a means of predicting postoperative implant performance and longevity utilising the historical dataset of comparison information and postoperative results; and generating and providing corrective information for alteration of the tissue state and morphology for improved postoperative implant performance and longevity.

The invention provides a tibial plateau assembly and a knee joint prosthesis with the tibial plateau assembly.The tibial plateau assembly comprises a first driving part arranged on a tibial plateau and hinged to a tibial pad, the first driving part has a first driving state and a first static state, and when the first driving part is in the first driving state, the first driving part drives the tibial pad to rotate; the first driving piece can stretch out and draw back in the direction from the tibia platform to the tibia gasket; the second driving piece and the first driving piece are arranged on the tibia platform in a spaced mode, the second driving piece is hinged to the tibia gasket, the second driving piece has a second driving state and a second static state, and when the second driving piece is in the second driving state, the second driving piece can stretch out and draw back in the direction from the tibia platform to the tibia gasket; the first driving part and the second driving part are matched to adjust the distance and / or the inclination angle between the tibia gasket and the tibia platform. According to the technical scheme, the problem that the relative position between the tibia gasket and the tibia platform cannot be adjusted in the prior art is effectively solved.

The present application provides a pressure sensing device and system for a unicompartmental knee joint, belonging to the field of medical device technology. The device includes: a housing assembly, provided with a sealed receiving cavity; a flexible pressure sensing electrode layer, accommodated in the sealed receiving cavity, for detecting the pressure of the unicompartmental knee joint, and converting the pressure of the unicompartmental knee joint into a sensing capacitance signal, the flexible pressure sensing electrode layer includes a first electrode layer and a second electrode layer arranged in a stacked manner, the second electrode layer is coated with a dielectric layer on the side facing the first electrode layer, the dielectric layer is bonded to the second electrode layer on the side facing the second electrode layer, and a microstructure is formed on the dielectric layer on the side facing the first electrode layer; a signal processing module, accommodated in the sealed receiving cavity, electrically connected to the flexible pressure sensing electrode layer, for converting the sensing capacitance signal into a unicompartmental knee joint pressure value. The present application has good measurement accuracy and signal stability when used in unicompartmental knee replacement.

Provided in the present application is an autonomous joint replacement surgical robot navigation and positioning system, comprising: a three-dimensional import unit, configured to import a three-dimensional bone image of a knee joint; a prosthesis planning unit, configured to plan a knee joint prosthesis on the basis of the three-dimensional bone image; a bone alignment unit, configured to align the three-dimensional bone image with a bone to undergo osteotomy in a real surgery scenario; a path planning unit, configured to plan an osteotomy path by means of an artificial potential field method; and a mechanical arm control unit, configured to control, on the basis of the planned osteotomy path, a mechanical arm to complete automated osteotomy. On the basis of bone alignment, the present application maps osteotomy planes into real surgery scenarios, so as to complete the automatic osteotomy operation, thereby achieving automated operation of the autonomous joint replacement surgical robot navigation and positioning system during surgery processes, reducing human intervention and further reducing errors caused by human intervention, and thus improving the accuracy, stability and efficiency of surgeries.

An orthopaedic tibial prosthesis includes a tibial baseplate with an asymmetric periphery which promotes proper positioning and orientation on a resected tibia, while also facilitating enhanced kinematics, soft-tissue interaction, and long-term fixation of the complete knee prosthesis. The asymmetric baseplate periphery is sized and shaped to substantially match portions of the periphery of a typical resected proximal tibial surface, such that proper location and orientation is evident by resting the baseplate on the tibia. The baseplate periphery provides strategically positioned relief and / or clearance between the baseplate periphery and bone periphery, such as in the posterior-medial portion to prevent deep-flexion component impingement, and in the anterior-lateral portion to avoid undue interaction between the anatomic iliotibial band and prosthesis components.

The present disclosure is a femoral preparation guide and a kit of surgical components related to the femoral preparation guide. The femoral preparation guide is for use on a condyle of a femur during a surgical procedure in which the condyle receives a femoral condylar implant. The femoral preparation guide includes a posterior portion for fitting over a posterior region of the condyle and a distal portion for fitting over a distal region of the condyle. The distal portion is at an angle relative to the posterior portion. The distal portion includes first and second resections slots for receiving cutting tools that provide two resections of the condyle. The first and second resections slots being at angles relative to each other.

An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and / or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon.

An orthopedic tibial prosthesis includes a tibial baseplate with an asymmetric periphery which promotes proper positioning and orientation on a resected tibia, while also facilitating enhanced kinematics, soft-tissue interaction, and long-term fixation of the complete knee prosthesis. The asymmetric baseplate periphery is sized and shaped to substantially match portions of the periphery of a typical resected proximal tibial surface, such that proper location and orientation is evident by resting the baseplate on the tibia. The baseplate periphery provides strategically positioned relief and / or clearance between the baseplate periphery and bone periphery, such as in the posterior-medial portion to prevent deep-flexion component impingement, and in the anterior-lateral portion to avoid undue interaction between the anatomic iliotibial band and prosthesis components.

A method of designing an orthopedic implant comprising: (a) iteratively evaluating possible shapes of a dynamic orthopedic implant using actual anatomical shape considerations and kinematic shape considerations; and, (b) selecting a dynamic orthopedic implant shape from one of the possible shapes, where the dynamic orthopedic implant shape selected satisfies predetermined kinematic and anatomical constraints.

An implant includes a body including a substrate and a bone interfacing lattice disposed on the substrate. The bone interfacing lattice includes at least two layers of elongate curved structural members. In addition, the at least two layers of elongate curved structural members include a first layer adjacent the substrate and a second layer adjacent the first layer. Also, the first layer has a first compressibility and the second layer has a second compressibility, wherein the second compressibility is greater than the first compressibility. Further, an interface between the first layer and the second layer is a transition region having a thickness within which the elongate curved structural members of the first layer are intermingled with the elongate curved structural members of the second layer such that a boundary of the first layer overlaps with a boundary of the second layer.

The invention provides a knee joint prosthesis tibial plateau capable of enhancing fixation and a tool matched with the tibial plateau, the knee joint prosthesis tibial plateau specifically comprises a tibia support, the tibia support is of a hollow cylinder structure, and three convex bodies are fixedly arranged on the outer surface of the tibia support; a groove penetrating into the tibia support is formed in the abutment, and the abutment is fixedly arranged on the tibia support; the pushing device comprises extension rods arranged at the two ends of a worm, the worm with threads arranged on the outer surfaces of the two ends, turbines arranged on the two sides of the worm, upper supporting bodies arranged at the tops of the turbines and connected with the fixing device through first connecting bodies, and lower supporting bodies arranged at the bottoms of the turbines and connected with the fixing device. The fixing device is a hollow cone, a first spring is arranged in the fixing device, one end of the first spring is connected with the first connector, and the other end of the first spring is connected with a fixing block. According to the technical scheme, the technical problem that after the knee joint prosthesis is implanted into the tibia, the tibial plateau is unstable, the prosthesis is loosened and disengaged, and then bone fusion is affected is effectively solved.

A rotary tool includes a tool body and a powered rotary cutting tooltip that is oriented and positioned relative to the tool body by a plurality of processor-controlled actuators that provide degrees of freedom. The processor uses a surgical tracking system to identify the pose of the tool body and the tooltip relative to a patient's anatomy and controls the actuators to maintain the tooltip within a predetermined cutting plan to compensate for deviation of a surgeon's hand or a robotic arm controlling the tool body during a cutting operation.

A method of designing an orthopedic implant comprising: (a) iteratively evaluating possible shapes of a dynamic orthopedic implant using actual anatomical shape considerations and kinematic shape considerations; and, (b) selecting a dynamic orthopedic implant shape from one of the possible shapes, where the dynamic orthopedic implant shape selected satisfies predetermined kinematic and anatomical constraints.

Disclosed herein are systems and methods for evaluating implant condition and associated patient condition. A method for determining an implant condition can include the steps of receiving implant vibration data from an implant coupled to a bone of a patient, receiving patient reported data from the patient, and generating an implant loosening score from the implant vibration data and the patient reported data. The implant vibration data can be generated by a sensor associated with the implant. The implant loosening score can be related to movement of implant with respect to the bone.

The present disclosure includes examples of an implant system configured for targeted joint resurfacing in which only an area including the osteochondral defect is resected, wherein the area resected occupies an area smaller than an entire joint surface. The implant system can include a monolithic first implant (5700) with 3D printed metal and a second implant (5600) including a plastic portion overmolded onto a metal portion (5604). The metal portion of the second implant also includes 3D printed metal. The first and / or second implants include solid metal portion(s) and porous metal portion(s). In an example, the first implant can be a femoral implant and the second implant can be a tibial implant. The first and second implants can be used on their own or in tandem.

An assembly for making an intramedullary spacer made of medical cement, designed to be inserted in a medullary canal. The assembly includes comprising a stem module and a reinforcing core. The stem module includes an end wall delimiting below a stem moulding chamber (SMC); and wherein the reinforcing core is at least partly positioned in the stem moulding chamber (SMC).

A method includes receiving, by a computing device, a plurality of identified points corresponding to an intercondylar notch of a femur of a patient, a medial intercondylar arc of the femur, and a lateral intercondylar arc of the femur, determining, by the computing device and based on the plurality of points, a Blumensaat line, a medial contour of the medial intercondylar arc, and a lateral contour of the lateral intercondylar arc, determining, by the computing device, a sagittal plane for the femur based on the Blumensaat line, the medial contour of the medial intercondylar arc, and the lateral contour of the lateral intercondylar arc, and performing at least one function of a surgical procedure associated with the femur based on the determined sagittal plane.

An orthopaedic knee implant includes a femoral component having a substrate and a coating disposed on the surface of the substrate. A method for making a femoral component of an orthopaedic knee implant is also disclosed.

The invention relates to a tibial plateau prosthesis. The tibial plateau prosthesis mainly comprises a tibial spacer, a tibial plateau and a sleeve. The tibia gasket is provided with a first fixing block and three arc-shaped holes, and movable second fixing blocks are arranged in the holes. The tibial plateau comprises a plateau support with open holes and a shell, and the open holes are formed in the side portion and the bottom of the shell. The screw penetrates through the gasket and the platform support to be inserted into the shell, and outer threads of the screw are meshed with inner threads of the sleeve. The sleeve moves upwards and extends out of the side hole of the shell through a hinged connecting rod system to penetrate into the medullary cavity to enhance fixation. A spring is arranged in the screw to drive the first pushing part and can be matched with the sleeve to prevent downward movement; and meanwhile, the second pushing part in the screw can extend into the medullary cavity from the bottom through threads. The design realizes multidirectional fixation and improves the stability of the prosthesis.

A proximal femur replacement implant assembly (500, 1000) arranged and configured to replace a head portion of a patient's proximal femur is disclosed. In some examples, the proximal femur replacement implant assembly includes a proximal femur replacement implant (505, 1005) arranged and configured to be coupled to, or inserted into an intramedullary canal of, a remaining portion of a patient's femur. The proximal femur replacement implant being arranged and configured to engage a bone plate (510, 1010, 1050) to, for example, minimize micromotion of the patient's greater trochanter to promote porous in-growth and to constrain movement of the greater trochanter.

The invention discloses a multi-node wearable and implantable joint intelligent monitoring linkage device and method, and relates to the field of joint monitoring, and the device comprises an in-vitro multi-node wearable module and an in-vivo implantable intelligent joint prosthesis; the in-vitro multi-node wearable module and the in-vivo implantable intelligent joint prosthesis cooperatively analyze the rehabilitation state of a patient implanted with the artificial joint; the in-vitro multi-node wearable module comprises a first main control chip, a first IMU (Inertial Measurement Unit) chip and a Bluetooth chip; the in-vivo implanted intelligent joint prosthesis comprises a joint prosthesis body, a second main control chip, a second IMU chip and an NFC tag chip, wherein the second main control chip, the second IMU chip and the NFC tag chip are arranged in the joint prosthesis body. In-vitro data are collected in real time through the first IMU chip in the in-vitro multi-node wearable module, joint movement data are collected in real time through the second IMU chip in the in-vivo implanted intelligent joint prosthesis, and real-time monitoring of knee hip joints and other parts of the body is achieved.

Prosthetic devices allow for full articulation of the joint, while absorbing impact of the components during normal use that will reduce wear on the device components and prolong life. The device may include a bone implantable component and a bearing component having an articulation surface that is sized and shaped to substantially mate with at least a portion of the bone implantable component and a damping mechanism that includes a contact member disposed at least primarily inside a cavity; a biasing member biasing the contact member toward an upper aperture of the cavity and means for capturing the contact member within the cavity.

Orthopedic implants and related surgical methods for using same. The implants have suture bore geometries that facilitate performance of the surgical methods, thereby providing for improved optimal biomechanical force application in various anatomies. The implants include suture bores that have an angled / diagonal, or skewed, orientation within the anatomical planes (lateral / sagittal and frontal / coronal). The suture bores have the skewed orientation so that the adjacent soft tissues (i.e., tendons or ligaments) can be advanced via the suture therethrough in superior-inferior and inferior-superior directions. Openings, or holes, at the ends of the suture bores are configured to approximate the adjacent associated soft tissue to the implant.

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 tibial trial insert system includes a bearing component having a superior articulating surface for articulation with a distal femoral surface, a plate component having an inferior fixation surface for fixation to a proximal tibia, and an adjustment arrangement for adjusting a proximal / distal spacing between the bearing component and the plate component. The adjustment arrangement includes an adjustment device having a superior connector element that engages an inferior surface of the bearing component, an inferior base element adapted to be placed upon a superior surface of the plate component, and a telescopic mechanism coupled to the connector element and the base element. The telescopic mechanism can adjust a thickness of the adjustment device. At least one shim is insertable between the superior surface of the plate component and an inferior surface of the base element for adjusting a height level of the adjustment device relative to the plate component.