18 results about "Unicompartmental knee replacement" patented technology

The invention provides a unicompartmental knee arthroplasty robot navigation and positioning system and method. The system comprises a preoperative planning module, a positioning and navigation module and a mechanical arm control module. The preoperative planning module is used for carrying out knee joint segmentation and reconstruction according to the obtained knee joint medical image, carrying out preoperative planning and determining a unicompartmental knee arthroplasty scheme; the positioning navigation module is used for registering the intraoperative solid knee joint and the preoperative knee joint three-dimensional model according to the navigator and the tracer, and tracking the poses of the osteotomy tool and the solid knee joint in real time; and the mechanical arm control module is used for planning a motion path of the mechanical arm and controlling the mechanical arm to execute the motion path. In this way, the mechanical arm can be controlled to assist in completing the osteotomy operation of unicompartmental knee arthroplasty in a preoperative planning and intraoperative optical navigation mode, and the problems that the operation level is uneven and the operation effect is not expected due to different individuals in the current manual operation are solved.

A surgical implant can include a femoral component including an outer surface and an inner surface opposite the outer surface. The femoral component can include a first post extending from the inner surface, the first post defining a first opening extending along an axis through the first post. The femoral component can include a second post extending from the inner surface, the second post defining a second opening extending along the axis through the second post. The surgical implant can include a fastener removably coupled to the first post and the second post, the fastener to extend through the first opening and the second opening.

The utility model relates to a thighbone side guide plate based on two-point bridging type knee joint unicompartmental knee arthroplasty, which comprises a first auxiliary plate, a second auxiliary plate and a third auxiliary plate, modeling is carried out through knee joint CT data before an operation, and two cartilage-free bone surfaces around a thighbone operation area are set as supporting points, so that the thighbone side guide plate can be used for knee joint unicompartmental knee arthroplasty. A 3D printing technology is used for printing a guide plate used for thighbone side and tibia side positioning and osteotomy, the guide plate is provided with a first auxiliary plate, a second auxiliary plate and a third auxiliary plate, the second auxiliary plate and the third auxiliary plate can be directly attached to the bone surface of cartilage-free tissue, the position of the first auxiliary plate above an operation area is achieved through two-point positioning, and the position of the second auxiliary plate above the operation area is achieved through two-point positioning. The first auxiliary plate does not need to be attached to the bone surface of the operation area, that is, the first auxiliary plate is not affected by cartilage tissue above the operation area, the precision error caused by the cartilage tissue of the osteotomy area is avoided, an operator can be guided more rapidly and accurately to conduct positioning and osteotomy in the operation, and the operation time and process are shortened.

The utility model relates to the technical field of osteotomy guide plates, in particular to a personalized knee joint unicompartmental arthroplasty osteotomy guide plate assembly which comprises an osteotomy guide plate body, a first fine adjustment body and a second fine adjustment body. A second fine adjustment area is formed in the osteotomy guide plate body in the direction perpendicular to the two first fine adjustment areas, a first moving groove is formed in each first fine adjustment area, a first fine adjustment body is installed in each moving groove, and a second fine adjustment body is installed in each second fine adjustment area; the adjacent bearing plates vertically move to accommodate the fixing needles at different positions, and the position of the saw blade is changed by matching with the movement of the saw bite plate, so that the influence on subsequent osteotomy operation caused by incapability of mounting an osteotomy guide plate due to position deviation of the fixing needles is avoided, accurate osteotomy is realized, and damage to bones is reduced; the problem that the installation of the osteotomy guide plate and the subsequent osteotomy operation are affected due to the fact that deviation is prone to occurring when fixing needles are punctured into different patients is solved.

The embodiment of the invention is suitable for the technical field of computer-aided medical technology and surgical robots, and provides a movable platform single-condyle surgical robot system, equipment and a computer program product, the system comprises a preoperative planning module, which is used for determining the implantation position of a surgical tool combination and a prosthesis; the intra-operative navigation module is used for performing joint gap balance evaluation based on the implantation position and determining the model of a first drilling tool to be used according to a joint gap balance evaluation result; and the intra-operation execution module is used for controlling the mechanical arm to operate each operation tool in the operation tool combination to execute each step of the movable platform unicompartmental knee replacement operation. By the adoption of the system, the type of the drilling tool can be directly determined according to the joint gap balance evaluation result, drilling tools of multiple types do not need to be evaluated in sequence, operation efficiency is improved, and the influence on a patient in the process of evaluating the type of the drilling tool is relieved.

The invention relates to the technical field of medical instruments, and discloses an adjustable anterior cruciate ligament protection drag hook for knee joint unicompartmental knee arthroplasty, which comprises a cross rod, a connecting rod is movably arranged on the upper surface of the cross rod, a protection head is fixedly connected to one end, far away from the cross rod, of the connecting rod, and a fixing bolt is movably inserted into the lower surface of the cross rod. Free 360-degree rotation is achieved through the connection characteristic of the ball head between the transverse rod and the connecting rod, the large-range rotation facilitates flexible adjustment of the positions of the connecting rod and the protection head according to the anatomical structure of the knee joint of a patient, the protection head accurately corresponds to the anterior cruciate ligament, and the protection head of a semicircular cylinder structure slowly extends between the femoral bone and the tibia. And the inclination angle of the anterior cruciate ligament is matched with the actual shape of the ligament, so that the protection fitting degree and effect are remarkably improved.

This invention relates to a patient positioner and, more specifically, to an articulated armature configured to position a leg and knee at a precise angle, as needed in unicompartmental knee arthroplasty surgery. The positioner is adapted to connect to either side rail of a support table, without changing orientation, via drop pins disposed in a socket clamp. The socket clamp may couple to a ball coupled to a first arm and elbow joint, which in turn may couple to a second arm and wrist joint, which in turn may couple to a pad assembly adapted to hold the patient's thigh, thereby positioning the lower leg to dangle over the side or end of an operating table. The positioner is adapted for ease of disassembly, sterilization, and reassembly. The invention may be exchanged for a total knee replacement positioner without moving the patient or breaking the sterile field.

A surgical implant includes a tray extending from a first end to a second end along a first plane, the tray including an upper surface and a lower surface, a first post coupled to and extending from the tray away from the first plane and configured to be inserted into a bone portion, the first post including a first opening extending through the first post, a second post coupled to and extending from the tray away from the first plane and configured to be implanted into the bone portion, the second post including a second opening extending through the second post, and a fastener removably coupled to the first post and the second post, the fastener extending from a first fastener end to a second fastener end through the first opening and the second opening.

Provided in the present application is a comprehensive-orthopedic multi-indication artificial-intelligence surgical robotic system, comprising: a total hip arthroplasty module, which is used for performing preoperative planning, intraoperative total hip arthroplasty, and real-time display; a total knee arthroplasty module, which is used for performing preoperative planning, intraoperative total knee arthroplasty, and real-time display; a unicompartmental knee arthroplasty module, which is used for performing preoperative planning, intraoperative unicompartmental knee arthroplasty, and real-time display; a periacetabular osteotomy module, which is used for performing preoperative planning, intraoperative periacetabular osteotomy, and real-time display; a sports medicine module, which is used for bone tunnel planning, ligament reconstruction, and real-time display; a pedicle screw fixation navigation module, which is used for performing intraoperative navigation and positioning during pedicle screw fixation, and real-time display; and a trauma positioning and navigation module, which is used for performing intraoperative trauma positioning and navigation, and real-time display. By means of the embodiments of the present application, assistance can be quickly and accurately provided during surgery.

This invention relates to a patient positioner and, more specifically, to an articulated armature configured to position a leg and knee at a precise angle, as needed in unicompartmental knee arthroplasty surgery. The positioner is adapted to connect to either side rail of a support table, without changing orientation, via drop pins disposed in a socket clamp. The socket clamp may couple to a ball coupled to a first arm and elbow joint, which in turn may couple to a second arm and wrist joint, which in turn may couple to a pad assembly adapted to hold the patient's thigh, thereby positioning the lower leg to dangle over the side or end of an operating table. The positioner is adapted for ease of disassembly, sterilization, and reassembly. The invention may be exchanged for a total knee replacement positioner without moving the patient or breaking the sterile field.

The invention provides a unicondylar replacement guiding and positioning equipment design method and related equipment. The design method comprises the following steps: acquiring historical medical data of a unicondylar osteotomy object; generating a knee joint statistical morphology model based on the historical medical data; and generating a predetermined unicompartmental knee arthroplasty guiding and positioning device based on the knee joint statistical morphology model. According to the method, the knee joint statistical morphology model is generated through the historical medical data, and then the unicompartmental knee arthroplasty guiding and positioning equipment is generated based on the statistical morphology model, so that the generated unicompartmental knee arthroplasty guiding and positioning equipment is matched with an individual, and the osteotomy precision and the operation effect of unicompartmental knee arthroplasty are improved.

The utility model belongs to the technical field of medical movable gaskets, and particularly relates to a dislocation-preventing movable gasket for knee joint unicompartmental knee arthroplasty, which comprises a mounting seat, mounting plates are symmetrically arranged in the mounting seat, and a connecting plate is fixedly connected between the symmetrically arranged mounting plates. The top of the upper mounting plate is fixedly connected with a gasket buffering assembly, the gasket buffering assembly comprises a macromolecular polyethylene buffering gasket, a macromolecular polyethylene connecting gasket and a macromolecular polyethylene connecting air bag, and the macromolecular polyethylene connecting gasket is fixedly connected to the top of the mounting plate; a carrier capable of providing connection between the two sides of the whole gasket buffer assembly and the tibia prosthesis and the thighbone prosthesis can be provided, so that the whole gasket buffer assembly can be in a relatively stable connection state with the tibia prosthesis and the thighbone prosthesis; meanwhile, when the macromolecular polyethylene buffer gasket and the macromolecular polyethylene connecting gasket are pulled by the thighbone prosthesis and the tibia prosthesis, the whole gasket buffer assembly can well buffer along with the action between the thighbone prosthesis and the tibia prosthesis.

The invention provides a preoperative planning method and device for unicompartmental knee arthroplasty. The method comprises the steps that a preoperative medical image of any object is acquired; constructing a three-dimensional skeleton model of the knee joint based on the preoperative medical image; and based on the three-dimensional skeleton model, determining a preoperative planning scheme of unicompartmental knee arthroplasty. According to the preoperative planning method, the size and the position of the implanted prosthesis can be determined before the operation, and whether the prosthesis meets the performance requirement or not can be virtually tested, so that joint surface reconstruction and prosthesis position determination are optimized.

The utility model belongs to the technical field of medical instruments, and particularly relates to a knee joint inner side unicompartmental knee replacement prosthesis center line measurer. The utility model provides a knee joint inner side single condyle replacement prosthesis midline measurer, and aims to solve the problem that in the prior art, a femur inner side condyle midline is not provided with a measuring tool, so that the determination error of the femur condyle midline is large. A knee joint inner side unicondylar replacement prosthesis center line measurer comprises a main board and a positioning block arranged at one end of the main board, the main board is further provided with an auxiliary measuring board, and the auxiliary measuring board is arranged at the end, close to the positioning block, of the main board; according to the utility model, the positioning groove on the positioning block is contacted with the surface of the thighbone inner side condyle, and the center line auxiliary line is arranged in the positioning groove, so that a doctor can visually see and determine the position of the center line of the thighbone inner side condyle. By means of the design, errors caused by manual judgment or tool limitation in a traditional method are avoided, and the measurement accuracy is improved.

The invention provides a cold region orthopedics department digital intelligence diagnosis and treatment intelligent operation planning system comprising a total knee joint replacement planning module used for planning according to an acquired knee joint medical image and cold region specificity data; the total hip replacement planning module is used for planning according to the acquired hip joint medical image and cold region specificity data; the unicondylar joint replacement planning module is used for planning according to the obtained knee joint medical image and cold region specificity data; the acetabulum periphery osteotomy planning module is used for planning according to the obtained hip joint medical image and cold region specificity data; the sports medical planning module is used for planning according to the acquired joint medical image and cold region specificity data; the spine planning module is used for planning according to the spine medical image and the cold region specificity data; and the trauma planning module is used for performing trauma operation planning according to the trauma part medical image and the cold region specificity data.

The invention belongs to the field of medical instruments, and provides a unicompartmental knee arthroplasty guide device which comprises a guide plate and a pressing plate, a guide hole is formed in the guide plate, and the guide plate is provided with a first attaching face used for being attached to the thighbone inner side condyle bone face; the pressing plate is connected with the guide plate and provided with a second attaching face used for being attached to the bone face of the front end of the thighbone tackle groove. By means of the thighbone inner side condyle bone surface and the thighbone trochlear groove front end bone surface, the guiding device has a large attaching range; the guiding device can be stably attached to the bone surface of the distal femur of a patient by utilizing the bony property between the front end of the femoral trochlear groove and the soft tissue of the front end of the femoral trochlear groove and the elastic state of the soft tissue of the distal femur when the knee joint is in the straightening state and the buckling state, and fixing nails do not need to be used or the using number of the fixing nails is reduced; therefore, the injury to the bones of the patient is effectively reduced.

The utility model relates to the technical field of medical instruments, in particular to a tibia sagittal osteotomy guider, in particular to a tibia sagittal osteotomy guider used for an oxford inner side movable platform unicompartmental knee arthroplasty, which comprises a sleeve, a guide frame and a locking piece. A guide part is formed at the first end of the guide frame, a plurality of clamping teeth are formed on the guide part, a connecting part is formed at the second end of the guide frame, and a strip-shaped guide hole is formed in the connecting part; a mounting hole is formed in the sleeve, the sleeve comprises a fixing seat, fixing teeth are formed at the first end of the fixing seat, a sleeve is fixed to the second end of the fixing seat, and the sleeve penetrates through the guide hole and then is locked with the locking piece in a matched mode. By means of the slidable design of the guiding frame, guiding and positioning on the tibia platforms of different anatomical forms are achieved, an operator can conveniently use a reciprocating saw to conduct tibia sagittal osteotomy according to the edge of the guiding frame, and accurate tibia platform sagittal osteotomy can be achieved.

This invention provides an automated osteotomy planning method and system for unicompartmental knee arthroplasty, comprising: acquiring a first contact point between the femur and tibia on the healthy side of the knee joint, and a second contact point between the femoral prosthesis and tibial prosthesis on the surgical side of the knee joint; generating the postoperative motion trajectory of the femur and tibia based on the first and second contact points; and automatically planning the amount of osteotomy of the femur or tibia on the surgical side of the knee joint based on the motion trajectory of the femur and tibia. This invention solves the problems of traditional manual surgery relying on the surgeon's experience, affecting the surgical outcome, and currently lacking effective intraoperative planning and accurate prediction capabilities. It greatly improves the safety and efficiency of unicompartmental knee arthroplasty, while also improving the surgical outcome, and significantly enhances the intelligence, usability, and reliability of this invention.