338 results about "Tibia bone" patented technology

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 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.

The invention belongs to the technical field of intelligent sensing, and discloses a knee joint instability quantitative evaluation system and method based on double inertial sensors, the two inertial sensors and a flat plate form an execution carrier, a software algorithm is taken as a core, and the knee joint instability quantitative evaluation method based on the double inertial sensors is realized by accurately measuring the movement between two skeleton parts. And dynamic quantitative evaluation of clinical technique examinations such as a Lachman test, an axial shift test and the like is realized. According to the method, results of inspection methods such as axial displacement testing and Lachman testing are quantified, the tibia advancing distance (mm), the joint rotation angle (degree) and the relative acceleration (m / s) are directly output, dynamic quantification is achieved, and accurate grading data are provided for the ACL damage degree; subjective feelings are replaced by data, so that evaluation differences among different doctors are greatly reduced, diagnosis standards tend to be unified, and precise medical treatment can be realized.

The utility model provides a multi-curvature ankle joint prosthesis which comprises a tibia prosthesis connected with a tibia, a talus prosthesis connected with a talus and a cushion block with one side connected with the tibia prosthesis, a joint contact surface is arranged on the other side of the cushion block, and a talus contact surface matched with the joint contact surface is arranged on one side of the talus prosthesis. The curvature of the sagittal plane Z in the talus contact face is reduced from front to back, and the instantaneous rotation center of the talus prosthesis on the joint contact face is in an arc shape. According to the multi-curvature ankle joint prosthesis, the talus contact face and the anatomical structure of the human body are high in consistency, the natural form and the motion mode of the ankle joint are accurately restored, the ankle joint prosthesis better conforms to biomechanics and kinematics in the motion process, the motion stability of the human body is improved, local friction stress of the ankle joint prosthesis is smaller, and the ankle joint prosthesis is more stable in motion. And the service life of the ankle joint prosthesis is prolonged, so that the durability of the ankle joint prosthesis is improved.

The invention provides a tibia transverse moving device based on a universal rotating joint, relates to the technical field of orthopedic medical instruments, and solves the problems that in the prior art, during an operation, a bone needle is obliquely installed, and due to a rigid frame and single-plane adjustment of a traditional device, the bone needle is not stably fixed, stress is concentrated, and complications occur frequently. The device is mainly composed of a main body support, a universal rotating joint device and a short bone needle fixing mechanism, the device is symmetrically distributed on the two sides with an adjusting rotary knob as the center, in the using process, transverse moving of bones can be completed only by controlling the adjusting rotary knob, and multi-direction adjusting is achieved through universal rotating joints.

According to one example, a for revision knee arthroplasty is disclosed. According to this example, the method can include shaping a bone of a patient to create one or more recesses therein, selecting a stem provisional, disposing the stem provisional within the one or more recesses, and assembling in vivo the stem provisional with both a first provisional component configured to simulate a shape of one of a tibial tray implant or a femoral implant and a second provisional component configured to simulate a shape of at least one of a sleeve component, a cone component or a keel component of an implant.

The invention discloses a flexible knee joint exoskeleton for maintaining dynamic stability of knee joints in the technical field of lower limb rehabilitation, and the flexible knee joint exoskeleton comprises a control box, a control module and a power supply unit are integrated in the control box, and one side of the control box is fixed to the waist of a user through a bandage. The device further comprises a sensing unit, a tibia anterior movement limiting assembly and a support fixing assembly, the output end of the sensing unit is electrically connected with the input end of the control box, and the sensing unit is used for obtaining first movement information of a user and sending the first movement information to the control box; the control box identifies the walking trend and the knee joint state of the user based on the first motion information and an artificial intelligence algorithm, wherein the knee joint state is a six-degree-of-freedom kinematics state. According to the flexible knee joint exoskeleton, the Bowden cable and the tibia forward movement limiting assembly are cooperatively driven, human body lower limb kinematics information is collected in real time through the sensing unit, and the forward movement amplitude of the tibia of a user can be limited.

The ankle joint prosthesis comprises a tibia prosthesis and a talus prosthesis, the tibia prosthesis is provided with a keel, the keel is used for being implanted into a tibia and extends in the front-back direction of the tibia prosthesis, the talus prosthesis is arranged on the lower side of the tibia prosthesis, the talus prosthesis is provided with a fixing rod, and the fixing rod is arranged on the lower side of the tibia prosthesis. The fixing rod is used for being implanted into the talus and obliquely extends downwards from front to back, an included angle alpha is formed between the extending direction of the keel and the extending direction of the fixing rod, and alpha is larger than or equal to 10 degrees and smaller than or equal to 85 degrees. The ankle joint prosthesis is reasonable in structural design, the stability of the ankle joint prosthesis in the human body movement process can be enhanced, and the dislocation risk of the prosthesis is reduced.

Methods and devices are disclosed for soft tissue balancing of a knee joint during an arthroplasty procedure that include balancing the knee joint at or near mid-flexion, while maintaining the rotational position of the femur with respect to the tibia that replicates proper kinematic placement of these bones. Also disclosed are methods and devices for soft tissue balancing of a knee joint during an arthroplasty procedure that include balancing the knee joint at or near mid-flexion using one or more expansion devices that are not actively requiring monitoring and / or recording of forces applied by the bodily tissues, but instead uses incremental changes in actual length / height of the expansion device to determine whether the joint is properly tensioned or too lax.

The invention provides a knee joint prosthesis and a tibial plateau thereof, and the tibial plateau comprises a second supporting platform and a first supporting platform which are arranged at an interval, and the position of the second supporting platform can be adjusted relative to the first supporting platform; the first end of the transmission part is movably arranged on the first supporting platform, and the second end of the transmission part is arranged on the second supporting platform; the driving structure comprises a mounting part and a driving part rotatably arranged on the mounting part, the rotating axis of the driving part is perpendicular to the axis of the mounting part, and the mounting part is rotatably arranged on the first supporting platform around the axis of the mounting part, so that the driving part drives the transmission part to rotate around the axis of the mounting part; the driving part is in driving fit with the transmission part so as to drive the transmission part to rotate in the direction parallel to the rotating axis of the driving part. According to the technical scheme, the problem that in the prior art, the relative position of the first supporting platform and the second supporting platform of the tibial plateau is inconvenient to adjust is effectively solved.

The invention discloses a lower limb exercise load assessment method and system based on multi-mode wearable equipment, and the method comprises the steps: 1) collecting exercise signals, three-dimensional track information and actual ground reaction force when a testee runs at different set speeds, and synchronizing the exercise signals, the three-dimensional track information and the actual ground reaction force through timestamps; 2) calculating the tibia force of the testee; 3) training a tibia force and vertical ground reaction force estimation model; 4) inputting the motion signals collected in real time into the tibia force and vertical ground reaction force prediction model to obtain predicted tibia force and vertical ground reaction force; and 5) calculating to obtain a lower limb exercise load evaluation index. The system comprises a pressure insole device, a pressure leg sleeve device, a surface myoelectricity device, an inertial sensor device, a training data acquisition module, a tibia force prediction model construction module, a vertical ground reaction force prediction model construction module, a vertical ground reaction force prediction module, a tibia force prediction module and a lower limb exercise load evaluation module. Compared with other methods, the method provided by the invention has higher systematicness and scientificity.

A bone fixator as disclosed herein includes at least one removable portion, and is particularly suitable for external fixation of the bones of the femur and tibia (knee joint), the tibia to the foot (ankle joint), the lower leg, the lower thigh, or the forearm and hand. Embodiments allow multiaxial, multiplanar movement, as well as procurvatum and recurvatum, on the anatomy to achieve optimal placement. Embodiments of the fixator includes four fixator joints, each of which is articulating with multiple degrees of freedom. Some fixator joint(s) include a linkage bar connectable to a multi-pin clamp having a quick connect mechanism. The multi-pin clamp is configured for fixation to a bone. Other fixator joint(s) may be connected to the multi-pin clamp in a semi-permanent or non-detachable manner. A telescoping rod assembly allows adjustment of the length of the fixator by a single individual.

An intraoperative surgical system can be used for knee arthroplasty. The system may include a sensor support body defining a platform, a force sensor positioned on the platform, and a sensor cover positioned over the platform of the sensor support body thereby sandwiching the force sensor between the platform and the sensor cover. The sensor cover can be detachably coupled to the sensor support body. The platform, the force sensor, and the sensor cover can collectively define a joint insertion block configured to be inserted into a tibiofemoral joint for measuring a force between a tibia and a femur defining the tibiofemoral joint.

Methods and devices are disclosed for soft tissue balancing of a knee joint during an arthroplasty procedure that include balancing the knee joint at or near mid-flexion, while maintaining the rotational position of the femur with respect to the tibia that replicates proper kinematic placement of these bones. Also disclosed are methods and devices for soft tissue balancing of a knee joint during an arthroplasty procedure that include balancing the knee joint at or near mid-flexion using one or more expansion devices that are not actively requiring monitoring and / or recording of forces applied by the bodily tissues, but instead uses incremental changes in actual length / height of the expansion device to determine whether the joint is properly tensioned or too lax.

An intraoperative surgical system for knee arthroplasty may be configured and / or reconfigurable to allow the surgical system to be inserted into different sized joint spaces during a surgical procedure. For example, the surgical system may include a sensor support body defining a platform, a force sensor, and a plurality of sensor covers each being configured to be detachably attached to the sensor support body. Each of the sensor covers can vary from each other in at least one characteristic. A selected one of the sensor covers can be placed over the platform, sandwiching the force sensor between the platform and sensor cover, to define a joint insertion block configured to be inserted into a tibiofemoral joint for measuring a force between a tibia and a femur defining the tibiofemoral joint.

The invention relates to a hinge type knee joint prosthesis which comprises a thighbone component (101), and the thighbone component comprises two condyles (101c and 101c ') and a hinge box (237). A tibial component (108); and a connecting member (150) connected to the tibial member (108) and the femoral member (101). The connecting component (150) comprises a box cover (102) connected with the thighbone component (101); the t-shaped joint (103) is connected with the box cover (102); the pivot pin (104) is connected with the t-shaped joint (103) and the box cover (102); the axial bushing (105) is connected with the pivot pin (104) and the t-shaped joint (103); and the axial locking screw (106) is used for fixedly connecting the axial bushing (105), the pivot pin (104) and the t-shaped joint (103) with one another. The box cover (102) comprises a connecting piece (201). The connecting piece (201) is used for avoiding contact between the femoral component (101) and the t-shaped connector (103).

The application provides a knee joint prosthesis tibial plateau capable of enhancing fixation and a matching tool, and specifically comprises: a tibial tray, which is a hollow cylindrical structure and is externally provided with three convex bodies; a base, which is provided with a groove penetrating into the tibial tray and is fixed on the tibial tray; a pushing device, which comprises: an extension rod arranged at both ends of a worm, a worm with threads arranged on the outer surface of both ends, a turbine arranged at both sides of the worm, an upper support body arranged on the top of the turbine and connected with a fixing device through a first connecting body, and a lower support body arranged at the bottom of the turbine and connected with the fixing device; and the fixing device is a hollow cone, which is internally provided with a first spring, one end of the first spring is connected with the first connecting body, and the other end is connected with a fixing block. The technical scheme of the application effectively solves the technical problem that after the knee joint prosthesis is implanted into the tibia, the tibial plateau is not stable, the prosthesis is loose and comes off, and bone fusion is affected.

The application discloses an ankle joint prosthesis, which comprises a tibia component, a pad and a talus component connected in sequence, and a plurality of bionic ligaments; the tibia component comprises a first intramedullary canal handle and a platform connected to the lower end of the first intramedullary canal handle; the pad comprises a pad body, and the upper surface of the pad body is provided with a cylindrical boss; the talus component comprises a second intramedullary canal handle and a connecting piece connected to the upper end of the second intramedullary canal handle; and the bionic ligaments are connected to the pad and the talus component respectively. The ankle joint prosthesis can completely replace the bone and cartilage of the ankle joint surface, thereby overcoming the problem that the cartilage surface cannot be repaired by an ankle arthroscopy surgery. The ankle joint prosthesis is used for replacing the original damaged ankle joint by using metal and polymer components, so that the discomfort symptom is relieved and the joint activity ability is reserved, and the ankle joint prosthesis is a full freedom ankle joint prosthesis which can completely reserve six activity modes of flexion, extension, inversion, eversion, internal rotation and external rotation.

The application discloses a mechanical locking type tibial platform, a tibial prosthesis and a knee joint prosthesis. The mechanical locking type tibial platform comprises a platform holder used for being attached to the proximal end of a tibia, a middle column extending downward along the center of the platform holder and used for being inserted into the marrow cavity of the tibia, an axial hole being arranged in the center of the middle column, a sleeve arranged in the axial hole of the middle column, a limiting structure being arranged on the outer wall of the sleeve, the limiting structure being configured to cooperate with the middle column to enable the sleeve to slide only in the axial direction of the axial hole, a fastener connected to the sleeve and protruding from the outer side wall of the middle column and used for being inserted into the cortical bone of the tibia, and a stand column, one end of the stand column being provided with a limiting block used for abutting against the top surface of the platform holder, and the other end of the stand column being provided with a threaded segment which is threadedly connected to the inner wall of the sleeve. The cooperation of the stand column, the sleeve and the fastener can lock the platform holder to the proximal end of the tibia and ensure the initial stability of the tibial platform.

A combination of a first assembly for guiding resection of a femur and tibia of a knee joint and a second assembly including femoral and tibial knee components. The combination of the first assembly and the second assembly provides optimal placement and positioning of the femoral and tibial knee components to achieve near-normal knee kinematics and tension. The preparation for and placement of the prosthetic knee components provides medial-pivoting kinematics mimicking that of the natural knee thereby promoting improved outcome for the patient.

The application provides an artificial prosthesis assembly for ankle replacement surgery, and belongs to the technical field of ankle prosthesis. The artificial prosthesis assembly comprises a talus arc plate, a circular arc guide rail is arranged on the top of the talus arc plate, a rivet is arranged in the interior of the talus arc plate, a joint soft plate is slidably connected to the top of the circular arc guide rail, and a tibial mounting plate is arranged above the joint soft plate; a rivet fixing assembly is arranged on the top of the tibial mounting plate. The elastic adjusting assembly and the sliding lubricating assembly are arranged, so that the contact area with the bone tissue is significantly increased, the initial stability of the prosthesis is enhanced, the risk of prosthesis separation is reduced, the prosthesis modulus is dynamically matched with the bone elasticity of the patient through the regulation of the elastic relaxation degree of the prosthesis, the risk of stress concentration of the prosthesis bone interface is reduced, the success rate of bone integration is improved, meanwhile, the prosthesis activity resistance is reduced through the ball lubrication, material fatigue and loss caused by dry friction between the prostheses are avoided, and the service life of the prosthesis is prolonged.

This invention relates to a multifunctional rehabilitation robot for knee osteoarthritis based on a rope-driven four-bar linkage structure, comprising a shell, a main control drive module, a knee joint wearable module, a knee joint connection and transmission module, and a detachable load-free module. The main control drive module is housed within the backpack shell. The knee joint wearable module includes a femoral wearable unit and a tibial wearable unit, connected via the knee joint connection and transmission module. The knee joint connection and transmission module includes a four-bar linkage structure and a rope drive assembly, which drives the four-bar linkage structure to achieve knee flexion and extension. The detachable load-free module includes a hip support unit and a leg support unit; the hip support unit is connected to the femoral wearable unit, and the leg support unit is connected to the tibial wearable unit. Compared with existing technologies, this invention effectively addresses the rehabilitation needs of patients with knee osteoarthritis and helps patients with varying degrees of varus / valgus aberration correction achieve assisted walking, load-free operation, rehabilitation training, and varus / valgus correction.

A personalized ankle osteotomy 3D printing guide plate comprises a 3D printing main body which is fixed to an operation part through a kirschner wire during use, and is characterized in that a guide hole penetrating through the main body and a plurality of positioning holes are formed in the main body, the guide hole is used for guiding the osteotomy cutting direction, the positioning holes are used for allowing the kirschner wire to penetrate through, and the 3D printing main body is designed through computer aided design; the inner side face of the main body of the guide plate is matched with the peripheral face of the tibia of the surgical site, personalized customization can be carried out according to the shape of the peripheral face of the tibia of the surgical site of a patient, a surgical auxiliary tool which is more suitable for the condition of the patient and is simple in structure is provided for the patient, and the guide hole can better guide operation of a doctor during surgery. The main body is fixed on the peripheral surface of the tibia through the positioning hole by using a kirschner wire, so that the main body can be more stably fixed on an operation part.

The application discloses a tibial prosthesis and a knee joint prosthesis with the same. The tibial prosthesis comprises a patellar ligament attachment surface, a lateral collateral ligament attachment surface and a medial collateral ligament attachment surface, and the surface roughness of at least one of the patellar ligament attachment surface, the lateral collateral ligament attachment surface and the medial collateral ligament attachment surface is less than or equal to a preset value. The tibial prosthesis has the advantages of small friction, low wear, no inflammation and pain, significantly reduced postoperative pain and discomfort, facilitated recovery of the patient, effectively maintained stability and function of the knee joint, long service life and the like.

The invention discloses an ankle joint clutch type mechanical sensing force unloading device. Relates to the technical field of ankle joint rehabilitation. The gear tibia piece is rotatably arranged on the ankle bearing base through the ankle joint shaft; the connecting rod mechanism comprises first connecting rods, second connecting rods, third connecting rods and tooth-shaped connecting rods, one ends of the second connecting rods are connected with the end of the fixed flange shaft, the two second connecting rods are connected with the fixed base, the first connecting rods are connected with the second connecting rods, and the other ends of the first connecting rods are connected with the third connecting rods through sliding blocks. The end, away from the third connecting rod, of the sliding block is connected with the ankle bearing base, the tooth-shaped connecting rod is connected with the ankle bearing base, and the third connecting rod is connected with the tooth-shaped connecting rod. The foot supporting part comprises a foot middle part, a foot front part and a foot rear part. Compared with an existing simple lower limb force unloading device, the lower limb force unloading device has the advantages of being compact in structure, light in weight, reliable in clutch performance and the like, and movement of the lower limbs of the human body cannot be hindered in the movement process.

The present disclosure provides a knee brace for preventing or mitigating injury to a user's knee. The knee brace includes a first sensor positioned with respect to a femur, and a second sensor positioned with respect to a tibia. The knee brace further includes a stiffening component configured to stabilize the user's knee, and a processor that receives sensor data from the first sensor and the second sensor to determine a relative position between the femur location and the tibia location. The processor is configured to activate the stiffening component when the relative position exceeds at least one of a first threshold, a second threshold, and a third threshold, wherein the first threshold indicates a potential over-rotation, wherein the second threshold indicates a potential over-abduction, and wherein the third threshold indicates a potential hyperextension.

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.

Embodiments of the present invention provide a patellar prosthesis and a total knee joint prosthesis. In this embodiment of the invention, the patellar prosthesis is used to cooperate with a femoral prosthesis. The femoral prosthesis includes a medial condyle, a lateral condyle, and an intercondylar fossa for corresponding cooperation with the tibia. The medial and lateral condyles have a recessed groove in the middle to form a trochlear groove for receiving the patellar prosthesis. The width of the intercondylar fossa is L7. The patellar prosthesis includes a patellar articular surface that cooperates with the femoral articular surface. When the human body is flexed greater than 90°, the patellar prosthesis cooperates with the intercondylar fossa. The width of the overlap between the patellar prosthesis and the lateral condyle is L6, and the width of the overlap between the patellar prosthesis and the medial condyle is L5. When the human body is flexed between 90° and 135°, L5 / L7 is 0.11 to 1.30, and L6 / L7 is 0.11 to 1.42. Therefore, the patellar prosthesis according to embodiments of the present invention has the advantage of improving the stability of the patellar joint.

The invention provides a bone setting assembly. The bone setting assembly comprises a tibia connecting piece; a talus connector; the angle adjusting piece is connected between the tibia connecting piece and the talus connecting piece, the angle adjusting piece comprises a swinging block, the swinging block is connected to one of the tibia connecting piece and the talus connecting piece, the swinging block is arranged on the other one of the tibia connecting piece and the talus connecting piece in a swinging mode, and a plurality of locking grooves are formed in the swinging block; the locking piece is provided with a locking position and an unlocking position; when the locking piece is located at the locking position, the locking piece is matched with one of the multiple locking grooves in an inserted mode so that the angle between the tibia connecting piece and the talus connecting piece can be fixed. When the locking piece is located at the unlocking position, the locking piece is separated from all the locking grooves, so that the angle between the tibia connecting piece and the talus connecting piece is adjustable. According to the technical scheme, the problems that in the prior art, an ankle joint bone fracture plate is poor in fitting degree and implantation stability are effectively solved.

This invention provides a fixation device and assembly method for pericondylar fractures of the knee joint prosthesis. The knee joint prosthesis includes a femoral condyle, a tibial plateau, and a tibial pad. The femoral condyle includes an anterior condyle, two posterior condyles, and an intercondylar fossa. A fixation device is installed in the intercondylar fossa, comprising an intramedullary fixation pin and a connecting fixation block. The connecting fixation block is installed within the intercondylar fossa and engages with the force-applying end of the intramedullary fixation pin. The connecting fixation block includes a main body with a top surface facing the tibial pad and a bottom surface opposite the top surface. The bottom surface extends away from the top surface to form a protrusion, and a through hole is formed within the protrusion, which is used to accommodate and fix the force-applying end of the intramedullary fixation pin. This invention embeds the entire connecting fixation block within the intercondylar fossa, fully utilizing the existing intercondylar fossa space of the PS-type prosthesis to establish a precise channel for the intramedullary fixation pin, thereby fixing the pericondylar fracture through structural fit.