25 results about "Tibial osteotomy" patented technology

The utility model belongs to the field of medical instruments, and provides a tibia osteotomy guide plate which comprises a tibia osteotomy guide part, a tibia first attaching part and a tibia second attaching part, and the tibia osteotomy guide part is provided with a tibia osteotomy groove; the tibia first attaching part is connected with the tibia osteotomy guide part, and the tibia first attaching part is provided with a tibia first attaching face used for being attached to a tibia articular face; the second tibia attaching part is connected with the tibia osteotomy guiding part, the second tibia attaching part is provided with a second tibia attaching face used for being attached to the side face of the near end of the tibia, and the second tibia attaching part is provided with a tibia positioning hole; wherein a tibia side anti-skid structure is formed on the tibia first binding surface and / or the tibia second binding surface. The tibia osteotomy guide plate can be stably and accurately attached to the proximal end of the tibia.

The invention pertains to a bone plate (10) designed for tibial Osteotomy, offering enhanced correction capabilities for genu varus deformity of the knee joint. The bone plate comprises an upper portion (12), a middle portion (14), and a lower portion (16), each equipped with a plurality of holes for secure attachment to the tibia at various locations. The middle portion (14) is pivotal in achieving correction at the osteotomy site, utilizing blocks (22) with threaded holes for fixation via locking screws (24) to achieve a valgus overcorrection of 2 to 6 degrees. The bone plate features three locking holes (18) in the upper portion and locking holes (20) with diameters less than 5 mm in the middle portion.

The application relates to the technical field of orthopedic surgery navigation, and discloses a high-position tibial osteotomy navigation method, a system and a storage medium, and a communication method which comprises the following steps: generating a 3D bone model of a lower limb of a patient based on medical images and performing preoperative osteotomy planning; performing visual positioning system detection and spatial calibration of a surgical instrument; installing an optical marker array, collecting actual bone point cloud data, and realizing alignment of the model and the bone through a registration algorithm; in-surgery real-time calculation and display of deviation of an operation track and planning parameters; post-surgery reconstruction of a lower limb force line, and comparison and evaluation with preoperative planning and in-surgery navigation records. The system comprises a hardware execution unit and preoperative planning, calibration verification, in-surgery registration, real-time navigation and post-surgery evaluation modules. The application realizes full-process integration of preoperative accurate planning, in-surgery real-time closed-loop navigation and post-surgery quantitative evaluation, and significantly improves the precision, repeatability and predictability of clinical effects of surgery.

The application provides a tibial osteotomy measuring device, which comprises: a valgus angle measuring member and a base plate cooperatively showing a valgus angle; a first end of a first measuring member can be matched with the lowest part of the medial tibia, a second end of the first measuring member is movably arranged in a first sliding seat, and a middle part of the first measuring member is movably arranged in a first guide groove; a lateral osteotomy depth measuring mechanism and a medial osteotomy depth measuring mechanism are arranged at intervals, a first end of a second measuring member can be matched with the lowest part of the lateral tibia, a second end of the second measuring member is movably arranged in the first sliding seat, and a middle part of the second measuring member is movably arranged in the first guide groove; the medial osteotomy depth measuring mechanism and the lateral osteotomy depth measuring mechanism are driven and matched with the valgus angle measuring member. The technical scheme of the application effectively solves the problem that the osteotomy measuring scale in the related art cannot simultaneously indicate the valgus angle and the medial and lateral osteotomy depth.

The application discloses a tibial osteotomy positioning assembly, a gap measuring assembly, an osteotomy device and an osteotomy system. The tibial osteotomy positioning assembly comprises a mounting mechanism and at least one measuring piece. The mounting mechanism is used for connecting with a tibial osteotomy block. The at least one measuring piece is used for connecting with the mounting mechanism. The mounting mechanism can place the at least one measuring piece in a first measuring position and a second measuring position. The at least one measuring piece is located at different positions of the mounting mechanism when being placed in the first measuring position and the second measuring position. The measuring piece in the first measuring position is used for being inserted between an inner condyle of a femur and an articular surface of a tibia, so as to measure the distance between the inner condyle and the articular surface, and to position the relative positions of the tibial osteotomy block and the articular surface. The measuring piece in the second measuring position is used for being inserted between an outer condyle of the femur and the articular surface of the tibia, so as to measure the distance between the outer condyle and the articular surface, and to position the relative positions of the tibial osteotomy block and the articular surface.

Provided is a tibial augment block, including an insert. The insert is arc-shaped, a convex side of the insert is provided with a connecting plate for being connected to an outer wall of tibia, a connecting hole facing the tibia is formed in the connecting plate, a certain included angle is formed between an axis of the connecting hole and each of upper and lower end surfaces of a tibial osteotomy area, and a connector for connecting the tibia is arranged in the connecting hole. The connecting hole is provided to make the connector form a certain angle with each of the upper and lower end surfaces of the osteotomy area.

This invention discloses an extramedullary tibial osteotomy device for knee replacement surgery, belonging to the field of medical device technology. The device includes a main connecting rod, with an ankle fixation module below it. The ankle fixation module includes an ankle connecting seat, and an angle adjustment module for adjusting varus / valgus and anteversion / anteroversion angles is located behind the ankle connecting seat. The lower end of the main connecting rod is fixed to the angle adjustment module. Above the main connecting rod are a tibial measurement module and a tibial osteotomy module. An upper navigation module and a lower navigation module are respectively located at the upper and lower ends of the main connecting rod. Both the upper and lower navigation modules contain remote sensing modules for acquiring the tibial varus / valgus and anteversion / anteroversion angles. This invention's extramedullary tibial osteotomy device for knee replacement surgery is simple to operate, has a short operation time, and is inexpensive.

The invention discloses a positioning method, system and tool used in movable plateau unicompartmental knee arthroplasty, and the method comprises the following steps: when a patient is in a lithotomy position, vertically and upwards extending the inward 1 / 3 position of a tibial tuberosity of the patient to the upper edge of patella and then extending to the body surface connecting line of anterior superior spine of iliac, and determining the ilioshin line of the patient; determining the inner side edge of the vertex of the tibial spine on the inner side of the patient as an osteotomy starting point; determining that the saw blade direction of osteotomy is parallel to the ilioshin line; the installation position of the thighbone drilling guider is located at the position with the distance of 5.25-7.25 mm from the vertical osteotomy face of the tibia through a quantification method; the rotating position of the femoral prosthesis is limited through geometric constraint, so that the connecting line of the center points of the two preset fixing nails on the femoral prosthesis is perpendicular to the tibia osteotomy surface. Good tibia prosthesis rotation is obtained by accurately guiding tibia vertical osteotomy through the body surface iliotibia line, good liner inner and outer side positions are obtained by quantifying the distance between the thighbone drilling guider and the tibia vertical osteotomy surface, and a good liner movement track can be provided.

The utility model discloses an ankle joint tibia support osteotomy guide plate which comprises a base body and an osteotomy groove arranged on the base body in a penetrating mode, a first base portion and a second base portion are formed on the upper side and the lower side of the osteotomy groove of the base body respectively, and a groove hole communicated with the osteotomy groove is formed in the second base portion. The direction perpendicular to the osteotomy guide plate is defined as the insertion direction of the osteotomy tool, and the osteotomy groove and the groove hole are obliquely formed in the insertion direction of the osteotomy tool. Compared with the prior art, the oblique osteotomy groove is formed so that the prosthesis can be obliquely implanted, on one hand, it can be guaranteed that the prosthesis is firmly fixed, on the other hand, the human body can be continuously stimulated through the oblique prosthesis, and the bone recovery speed is increased.

The invention provides a tibia osteotomy measuring device. The tibia osteotomy measuring device comprises an eversion angle measuring piece and a base plate, wherein the eversion angle measuring piece and the base plate jointly show an eversion angle; the first end of the first measuring piece can be matched with the lowest position of the inner side of the tibia in an attached mode, the second end of the first measuring piece is arranged in the first sliding seat in a reciprocating motion mode, and the middle of the first measuring piece is movably arranged in the first guide groove; the outer side osteotomy depth measuring mechanism and the inner side osteotomy depth measuring mechanism are arranged in a spaced mode, the first end of the second measuring piece can be matched with the lowest position of the outer side of the tibia in an attached mode, the second end of the second measuring piece is arranged in the first sliding base in a reciprocating motion mode, and the middle of the second measuring piece is movably arranged in the first guide groove; the inner side osteotomy depth measuring mechanism and the outer side osteotomy depth measuring mechanism are both in driving fit with the eversion angle measuring piece. According to the technical scheme, the problem that in the prior art, an osteotomy measuring scale cannot indicate the eversion angle and the osteotomy depth of the inner side and the outer side at the same time is effectively solved.

The utility model discloses a dog tibia horizontal osteotomy bone guide plate which comprises a first guide plate body and a second guide plate body, the inner wall of the first guide plate body and the inner wall of the second guide plate body are each of an arc-shaped structure, and the first guide plate body and the second guide plate body are used for attachment of dog tibia moving positions. Fixing rings are fixedly connected to the inner walls of the first guide plate and the second guide plate, wear-resisting rings are fixedly connected to the inner walls of the fixing rings, and positioning assemblies are inserted into inner cavities of the wear-resisting rings in a penetrating mode and used for multi-angle fixing of the first guide plate and the second guide plate. By means of the arrangement mode that the first guide plate and the second guide plate are matched, the positions of the first guide plate and the second guide plate which are arranged at different angles can be fixed through matching of the fixing ring and the positioning assembly, and the attaching stability of the first attaching plate and the second attaching plate on the outer wall of the tibia is improved; abrasion of the first attaching plate and the second attaching plate to the outer wall of the tibia is reduced, and the application performance of the bone guide plate to dog tibia fixation is improved.

This invention provides a knee joint flexion-extension gap measuring and balancing device, including a base, a pressure measuring mechanism, and a gap measuring mechanism. The base includes a lower support arm and a measuring part. The pressure measuring mechanism includes a pressure measuring block mounted on the measuring part, with two symmetrically arranged pressure measuring sections. A pressure scale is provided on the front surface of each pressure measuring section. The upper support arm is inserted into and movable within the pressure measuring section. The lower and upper support arms are respectively attached to the tibial osteotomy surface and the femoral osteotomy surface, allowing observation of the pressure values ​​on the inner and outer sides of the knee joint. A gap scale is provided on the front surface of each measuring section. An eccentric adjustment mechanism is inserted into the measuring part and the pressure measuring block from the front surface of the measuring section. Rotation of the eccentric adjustment mechanism causes the pressure measuring block to move up and down, allowing observation of the knee joint flexion-extension gap value. This device can directly read the pressure values ​​on both sides of the knee joint and the knee joint gap value, providing accurate values ​​for surgeons and simplifying surgical procedures.

The application relates to the technical field of medical devices and discloses a high-position tibial osteotomy osteotomy surface planning method and system and a storage medium. The method first reconstructs a three-dimensional model based on medical images, constructs a local anatomical coordinate system and an initial osteotomy plane; then constructs an osteotomy parameter geometric constraint model, processes parameter interaction by using a linear constraint equation, realizes linkage update of an osteotomy position, depth and lateral hinge retention amount and safety threshold boundary control; further establishes a virtual distraction model, performs a lower limb mechanical force line path pre-performance, and performs instrument interference detection based on a signed distance field; and finally generates a navigation protocol. The application effectively avoids the risk of lateral hinge fracture through a parameter linkage mechanism, realizes accurate prediction of force line correction effect and active avoidance of surgical risks by combining virtual kinematics simulation, and improves the accuracy and safety of preoperative planning.

The utility model relates to a total knee arthroplasty tibia osteotomy guide plate and osteotomy assembly.The total knee arthroplasty tibia osteotomy guide plate comprises a guide plate body, a guide block and a positioning claw are arranged on the guide plate body, and the extension direction of the guide block corresponds to the direction of a connecting line of a tibia intercondylar ridge and a posterior cruciate ligament dead point; the positioning claw comprises a binding face, the binding face corresponds to a tibia platform, and a tibia front binding face is arranged on the guide plate body. An osteotomy groove used for performing osteotomy on the proximal tibia is formed in the guide plate main body, a fixing hole is formed in the lower part of the osteotomy groove, and the fixing hole is formed in the side wall of the guide plate main body in a penetrating manner. The osteotomy guide plate positioning device can ensure the accuracy and stability of osteotomy guide plate positioning, avoids the defects caused by one-time cutting in a traditional operation, reduces learning curves of doctors, and is simple and practical.

The application discloses a device and method for distraction and fixation of tibial osteotomy. The device for distraction and fixation of tibial osteotomy comprises a distraction assembly, which comprises left and right distraction devices arranged detachably. The left distraction device comprises a left turnover plate and a left fixed plate, and the front end of the left turnover plate is hinged to the front end of the left fixed plate. The right distraction device further comprises a right turnover plate and a right fixed plate, and the front end of the right turnover plate is hinged to the front end of the right fixed plate. Adjacent sides of the left and right turnover plates are provided with upper notches, and the rear end openings of the upper notches are used for switching sliding into the sliding entrances of a moving plate and a supporting wedge. The left and right turnover plates are linked through the moving plate. The device further comprises an angle adjusting assembly for controlling the distraction angle of the left and right distraction devices. The application realizes controllable distraction angle, and controls the distraction angle through the rotation angle control of a driving knob.

The invention belongs to the field of medical instruments, and provides a tibia osteotomy guide plate and a design method thereof.The tibia osteotomy guide plate comprises a tibia osteotomy guide part, a tibia first attaching part and a tibia second attaching part, and the tibia osteotomy guide part is provided with a tibia osteotomy groove; the tibia first attaching part is connected with the tibia osteotomy guide part, and the tibia first attaching part is provided with a tibia first attaching face used for being attached to a tibia articular face; the second tibia attaching part is connected with the tibia osteotomy guiding part, the second tibia attaching part is provided with a second tibia attaching face used for being attached to the side face of the near end of the tibia, and the second tibia attaching part is provided with a tibia positioning hole; wherein a tibia side anti-skid structure is formed on the tibia first binding surface and / or the tibia second binding surface. The tibia osteotomy guide plate can be stably and accurately attached to the proximal end of the tibia. The tibia osteotomy guide plate is designed according to the preoperative planning scheme confirmed by the doctor through medical-worker interaction, and the design accuracy of the tibia osteotomy guide plate is improved.

The application discloses a kind of modular knee joint prosthesis, it is related to medical instrument technical field, the knee joint prosthesis includes femoral prosthesis, locking connection component, tibial prosthesis and femoral extension module, during initial replacement surgery, medical staff carries out osteotomy to femur, after being coated with bone cement on femoral joint, femoral prosthesis is implanted femur osteotomy surface, subsequently, tibial prosthesis is installed to tibial osteotomy surface after being coated with bone cement on tibia, according to clinical requirement, use corresponding specification locking connection component, locking connection component is connected and fixed with tibial prosthesis, finally, the relative position of femoral prosthesis and tibial prosthesis is adjusted, and the installation of prosthesis of knee replacement surgery is completed, when revision surgery is carried out, for the size difference of femoral defect of different patients, medical staff will corresponding specification femoral extension module is loaded into femoral prosthesis, the same set of knee joint prosthesis system is compatible initial replacement and revision surgery by the application, the application has the effect of improving clinical flexibility.

The utility model provides a positioning device for tibia osteotomy, and belongs to the technical field of medical instruments. The positioning device for tibia osteotomy comprises a force line adjusting telescopic assembly, an osteotomy guide assembly and a fixing assembly, the osteotomy guide assembly is arranged at the upper end of the force line adjusting telescopic assembly, the fixing assembly comprises an ankle holding device and a leg holding device, the ankle holding device is arranged at the lower end of the force line adjusting telescopic assembly, and the leg holding device is arranged at the lower end of the force line adjusting telescopic assembly. The ankle holding device is used for being arranged at the ankle joint of the patient, the leg holding device is arranged on the force line adjusting telescopic assembly and is arranged over the ankle holding device, and the leg holding device is used for being arranged at the shank of the patient. According to the positioning device for tibia osteotomy, the ankle holding device and the leg holding device are arranged, the ankle holding device is used for clamping the ankle joint of a patient, the leg holding device is used for clamping the shank of the patient, and the stability of the device in the using process is improved.

The embodiment of the present application discloses a single condyle femur osteotomy instrument and a single condyle femur osteotomy instrument kit. The single condyle femur osteotomy instrument comprises an osteotomy part, a mounting part and an adjusting assembly, the osteotomy part and the mounting part are at least partially inserted between the femur and the tibia, the osteotomy part comprises an osteotomy section and a main body section connected with each other, the osteotomy section is provided with an osteotomy groove, the main body section is movably connected with the mounting part, and the adjusting assembly is used for driving one of the main body section and the mounting part to move relative to the other between the femur and the tibia. The adjusting assembly is connected with the main body section and the mounting part respectively, so that the main body section and the mounting part can move relative to each other between the tibia and the femur, the relative position between the main body section and the mounting part is adjusted until the first supporting surface abuts against the distal end of the femur and the second supporting surface abuts against the tibial osteotomy surface, so that the osteotomy section is adjusted to a suitable position, and the osteotomy requirement of different gaps between the distal end of the femur and the tibial osteotomy surface is met.

The invention discloses a new surgical guide (1) specially designed for performing a three-dimensional valgus-derotational tibial osteotomy. In particular, the guide (1) is formed by two parts (2, 3) that fit together along a cutting groove (4) marking the precise position of the cutting plane, where the cutting groove (4) is contained in a plane that is inclined with respect to both the sagittal plane and the coronal plane. Further, the guide (1) comprises means for signalling the surgeon the moment when the bone (H) has been rotated the desired angle calculated during surgical planning.

The present disclosure relates to a tibial osteotomy system. The system includes a base plate configured to interface with the tibia which includes a body with a first pair of apertures configured to receive a first pair of stabilization elements, a first end with a first aperture, and a second end with a second aperture. The system also includes a measuring arm coupled with the first end of the base plate via the first aperture and having a third aperture aligned with the first aperture to receive a first screw, and a cut guide pivotably coupled with the second end of the base plate via the second aperture and having a fourth aperture aligned with the second aperture to receive a second screw therein. The cut guide also has a slot, a measurement flag releasably couplable within the slot, and a protrusion configured to receive a second stabilization element.

A tibial osteotomy system includes a trial member configured to be installed as a substitute for an implant on a distal portion of a femur; and a cutting guide detachably attachable to the trial member, wherein the cutting guide is provided with a guide portion that guides a tibial cutting tool relative to the trial member.

The utility model provides a tibia osteotomy positioning device, and belongs to the technical field of medical instruments. The tibia osteotomy positioning device comprises a force line adjusting rod assembly, an osteotomy guide assembly, a positioning assembly and an ankle holding device, the positioning assembly is arranged at the upper end of the force line adjusting rod assembly, abuts against an intercondylar bulge and is used for positioning the intercondylar bulge, the osteotomy guide assembly is arranged on the force line adjusting rod assembly, and the ankle holding device is arranged on the force line adjusting rod assembly. The osteotomy guiding assembly is arranged below the positioning assembly, and the ankle holding device is arranged at the lower end of the force line adjusting rod assembly and used for being arranged at the ankle joint of a patient. According to the tibia osteotomy positioning device, the positioning assembly is arranged and located at the upper end of the force line adjusting rod assembly, when the tibia osteotomy positioning device is used, the positioning assembly is placed on an intercondylar bulge of a patient, the measurement and calculation accuracy of the osteotomy amount is improved, and the situation that the recovery of the patient is affected due to the fact that the osteotomy amount is too large is avoided.

The application discloses a tibial osteotomy guide plate, an osteotomy system and a spatial position determination method, and relates to the technical field of medical instruments. The tibial osteotomy guide plate comprises a guide plate body, a plurality of groups of positioning needle nail channels and a first force line verification interface. The guide plate body is provided with a bone contact surface, the shape of the bone contact surface is adapted to the proximal end anatomical morphology of a tibia of a patient, the plurality of groups of positioning needle nail channels penetrate through the guide plate body, and the perpendicular distances from the axes of the groups of positioning needle nail channels to the osteotomy reference plane of the guide plate body are different. The first force line verification interface is arranged on the guide plate body and is configured to be accessible to a force line verification instrument. Based on the technical scheme disclosed by the application, the cumbersome and potential errors of intraoperative multi-hole alignment selection are avoided, the adjustment is more intuitive, accurate and efficient, the final accuracy of force line recovery can be maximally guaranteed, the surgical risk can be reduced, and the consumable cost of a single surgery can be greatly reduced.