62 results about "Arthroplasty replacement" patented technology

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.

The application discloses a kind of postoperative image index automatic measurement methods of hip arthroplasty, belong to medical image processing technical field, first obtain original data set;Marking is obtained to obtain segmentation data set and key point detection data set, and image data is carried out data enhancement and data preprocessing;Using segmentation model, segmentation data set is handled to obtain region of interest;Using key point detection model combines Gaussian heat map regression method to detect key point in region of interest image;Finally, according to the position of key point, the four parameters of patient after hip arthroplasty are calculated, to accurately evaluate the condition of patient after hip arthroplasty surgery is carried out.The application uses deep learning measurement method to automatically measure some important indexes quickly, accurately and with high repeatability, solves the pain point of manual labeling, saves manpower and time, has excellent reliability and accuracy, and has application value for clinical diagnosis.

The utility model relates to the technical field of medical care, and discloses an adjustable brace for dislocation fixation after hip replacement in the orthopedics department, which comprises a hollow connecting pipe, the left end of the hollow connecting pipe is detachably connected with a telescopic rod, and the right end of the hollow connecting pipe is detachably connected with a rod piece. The ends, away from each other, of the telescopic rod and the rod piece are provided with ankle fixing mechanisms. Wherein the ankle fixing mechanism comprises a connecting side column, one end of the connecting side column is fixedly mounted at the other end of the telescopic rod or the rod piece, a [-shaped mounting plate is mounted at the other end of the connecting side column, and an annular positioning plate is fixedly mounted at the other end of the [-shaped mounting plate. The nursing bed is firm in fixation, has an adjusting function, is better in applicability, is simple to operate, is convenient to nurse, and is practical and reliable.

The utility model discloses a hip replacement post-operation dual-purpose body position pad which comprises a first body position pad, a second body position pad is arranged on the right side of the first body position pad, sponge pads are filled in the first body position pad and the second body position pad, and zippers are fixed on the lower end face of the first body position pad and the lower end face of the second body position pad. The first magic tape hook surface is fixed on the lower end surface of the first body position pad, and a second magic tape hook surface is fixed on the right side of the first body position pad; and the first magic tape rough surface is fixed on the lower end surface of the second body position pad. According to the dual-purpose body position pad used after hip replacement, when the lower limb is kept in the abduction neutral position in the horizontal position, the shank is lifted to relieve postoperative edema and promote venous return of the lower limb, and turning over towards the healthy side, the second function of the body position pad is applied, the pad is arranged between the two legs in the side-lying position, the distance between the two legs is fixed, and the distance is kept stable; excessive internal rotation, adduction and excessive hip bending of the affected limb in the healthy side lying position are avoided, and the comfort of a patient and the stability of the body position of the patient are effectively guaranteed.

The utility model discloses a body position pad used in hip replacement, which comprises a pad body used for supporting lower limbs; wherein a concave limiting part is arranged at the position, opposite to the knee joint, of the pad body. According to the utility model, the pelvis can be maintained in a neutral position, so that the risks of pelvis inclination, unequal length of limb functionality and the like after an operation are reduced.

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

The present application relates to hip replacement technical field, and disclose a kind of hip replacement post anti-dislocation positioner and its using method, including mounting frame, further comprising: fixed component, fixed component includes screw hole rod, the end of screw hole rod is rotatably connected with the surface of mounting frame, and the inner wall of screw hole rod is threadedly connected with threaded rod;Protection component, protection component includes telescopic plate, and the end of telescopic plate is fixedly connected with round hole rod, and the inside of round hole rod is sleeved with semicircle frame.The surface of mounting frame of the present application is provided with fixed component, and fixed component can be tied at the torso of patient, after fixed component is fixed at the torso of patient, protection component can be positioned, after protection component is fixed, it is pushed to move downward, when protection component moves downward, it will contact with the hip joint of patient and position hip joint, avoid hip joint to appear the condition of falling off, inside protection component is provided with stabilizing component, when protection component is sleeved at the hip joint of patient.

The invention relates to the field of postoperative rehabilitation instruments, and particularly discloses a hip replacement postoperative dislocation prevention cushion structure which comprises a cushion mechanism and a limiting frame mechanism. The seat cushion mechanism comprises a seat cushion assembly, a fixing shaft bracket assembly is arranged at the bottom of the seat cushion assembly, and a pawl assembly is installed on the outer side of the fixing shaft bracket assembly; the limiting frame mechanism comprises a limiting frame assembly rotationally installed on the fixing shaft frame assembly. By arranging the rotatable limiting frame body and the locking structure matched with the ratchet wheel and the pawl, reliable guarantee can be obtained when a hip replacement postoperative patient uses the cushion, after the patient sits, the handle is pulled in the direction of the cushion body, the shaft rod drives the ratchet wheel to rotate, and the limiting frame body is lifted accordingly; after reaching a proper position, the pawl body abuts against the ratchet wheel under the action of the first spring, and reverse rotation of the ratchet wheel is effectively limited; and through the linkage design of the pull rope assembly and the pawl assembly, the laying-down operation of the limiting frame body is extremely simple and convenient.

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

The invention discloses a hip replacement post-operation anti-falling device, which comprises two positioning plates, a clamping fixing piece and a binding fixing piece, and is characterized in that the two positioning plates are arranged on a bed surface in a left-right opposite manner; the number of the clamping and fixing pieces is two, and the two clamping and fixing pieces are arranged on the two positioning plates correspondingly and used for being clamped and fixed to a bed body. The binding fixing part comprises a plurality of binding blocks and a plurality of locking parts, the binding blocks are sequentially hinged to form a strip shape through a center shaft, the two binding blocks at the head and the tail are fixedly connected with the ends of the inner sides of the two positioning plates respectively, one locking part is arranged between every two adjacent binding blocks, and the locking parts are fixedly connected with the locking parts. And the locking piece is used for locking the angle between the two binding blocks.

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

Stemless components and fracture stems for joint arthroplasty, such as shoulder arthroplasty, are disclosed. Also, methods and devices are disclosed for the optimization of shoulder arthroplasty component design through the use of medical imaging data, such as computed tomography scan data.

The invention discloses a non-invasive positioning method for pelvis and lower limbs in hip replacement. The non-invasive positioning method comprises the following steps: 1, calibrating a flexible multi-array strain sensor at pelvis skin; 2, acquiring strain intensity information, attitude information and space information of the sensor; 3, standardizing the timestamps of the collected information; 4, setting a data acquisition time interval; 5, calculating a strain tensor change rate, a relative displacement change rate and an attitude difference angle; 6, the trend degree and the dispersion degree of the sum are obtained; 7, calculating a skin sliding index SI and a skin deformation index DI; 8, respectively setting an SI threshold value and a DI threshold value and comparing; 9, calculating the length variation between the nodes of the sensor array; 10, performing spatial position compensation according to the step 8; and 11, repeating the steps 2-10 to carry out space information compensation on the femur until positioning is stopped. According to the invention, the identification and compensation of the motion artifacts of the optical marker in the operation are realized, and the accuracy and stability of navigation in the operation are improved.

The utility model discloses a joint replacement post-operation pressurizing leg sleeve with pressure gradient, which belongs to the technical field of knee joint post-operation medical equipment, and comprises a belt body, the belt body is provided with two first side edges which are oppositely arranged, and the two first side edges extend along a first direction; the belt body is provided with a plurality of air cavities distributed in the first direction. The air pressure values in the plurality of air cavities are increased or decreased in a gradient manner along the first direction; matched connecting assemblies are arranged on the two first side edges, the two first side edges can be connected through the connecting assemblies to enable the belt body to form a sleeve body, and a containing cavity is formed in the sleeve body. An observation hole communicated with the accommodating cavity is formed in the middle of the belt body; the plurality of air cavities are distributed on the belt body along the first direction, and the air pressure values of the plurality of air cavities are changed in a gradient manner along the first direction, so that gradient pressure conforming to physiological laws can be applied to veins of limbs, the flowing speed of venous blood is increased, the backflow of the venous blood is promoted, blood circulation and incision healing are facilitated, postoperative edema is relieved, and the postoperative healing effect is improved. Phlebothrombosis is prevented.

The utility model discloses a kind of knee joint replacement postoperative rehabilitation pressing devices, including stand, one end of the stand is movably connected with movable seat, one end of the movable seat is fixedly connected with lifting seat, the both sides of the lifting seat are movably connected with telescopic plate, one end of the telescopic plate is fixedly connected with boom, the utility model has beneficial effect, first power mechanism, second power mechanism, third power mechanism and inflation mechanism are respectively driven by controller to operate, so that two groups of fixed rods can be clamped to the calf and thigh in the air, its knee is located in the just below lifting seat, finally again through first power mechanism drive lifting seat slowly lift, lifting lifting seat pushes the lifting of hanged clamping seat, clamping seat drives the lifting of connected clamping plate, clamping plate can repeatedly press the leg of clamping, structure is reasonable, it is convenient for automatic pressing of leg, less manual labor, it is convenient to adjust simultaneously, it is convenient for different body size patient to be clamped and pressed.

The invention discloses a joint replacement bone cement uniform smearing device and a using method thereof, and belongs to the technical field of joint replacement. Comprising a drug delivery assembly, a coating assembly is arranged at the bottom of the drug delivery assembly, the drug delivery assembly comprises an injection tube, a communicating head is arranged at the bottom of the injection tube, the coating assembly comprises an exhaust cavity, a communicating port is formed in the top of the exhaust cavity and connected to the outer side of the communicating head in a clamped mode, and a communicating part is arranged at the bottom of the exhaust cavity. A doctor blade is fixedly installed at the bottom of the communicating part, the doctor blade is of a hollow structure, an administration groove is formed in one side of the lower end of the doctor blade, a uniform coating strip is fixedly installed at the bottom of the doctor blade, the doctor blade and the uniform coating strip are both made of medical silica gel, and the hardness of the doctor blade is larger than that of the uniform coating strip. A flow guide groove is transversely formed in the outer side of the uniform coating strip; according to the bone cement smearing device, bone cement can be conveniently and evenly smeared to the surface of a joint platform, bubbles mixed in the bone cement can be eliminated, and the high practical value is achieved.

A surgical implant opening insert for use in a surgical implant system, and a surgical implant system for use in arthroplasty, comprising an opening and the surgical implant opening insert, are provided. The insert can increase the surface area of ​​the surgical component available for bone regrowth and provide fitting means to allow the use of different fixation devices within the opening.

A safety broach for use in arthroplasty for hip joints, and a system including the same. The system may further include a segmented or otherwise flexible reamer and an implant. The safety broach includes a hollow interior passage that serves to guide the reamer when the safety broach is in place in the bone. The system may include any number of sizes of safety broaches, segmented reamers, and implants. In any case, such a safety broach may be capable of assisting with arthroplasty for hip joints (or any other joint), while typically providing enhanced safety and reliability of the arthroplasty.

The present invention provides an apparatus for sensing the pressure on the body of a patient on an anterior hip table or a standard surgical table. The pressure monitoring post provides a warning indicator when the pressure exceeds a predetermined value that is related to pressure related injuries. The pressure monitoring post may also provide for a center and two lateral pressure sensors to detect the pressure resulting on a patient's body during various processes related to hip distraction for arthroscopy and arthroplasty procedures.

The invention relates to the technical field of hip joint replacement auxiliary activities, and discloses a hip joint replacement auxiliary activity device which comprises a fixing mechanism and further comprises a frame body, a connecting column is fixedly connected to the outer wall of the frame body, frame feet are fixedly connected to the outer wall of the frame body, and rolling wheels are rotationally connected to the outer wall of the frame body; the pressing mechanism is fixedly connected to the outer wall of the frame body, and the extrusion mechanism is used for assisting a user to sit down, is fixedly connected to the outer wall of the frame body and is used for decelerating the device; the locking mechanism is fixedly connected to the outer wall of the frame body and used for locking the device, when a user sits down, due to the fact that the initial turning plate is in an inclined state, when the user sits down, the turning plate can rotate on the seat cushion to assist the user in sitting down, in this way, the stress parts of hip joints are reduced, and the hip joints are prevented from being damaged. And the situation that the service life is affected due to dislocation of the artificial joint or prosthesis abrasion is prevented.

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.

A locator for positioning the original hip joint center during hip replacement surgery. A bar-shaped arm is a fixed arm. One end of the fixed arm is hinged to the fixed end of the first movable arm through a first hinge stud, and the other end of the fixed arm is hinged to the fixed end of the second movable arm through a second hinge stud. The distance between the hinge points at both ends of the fixed arm is 45 - 55 mm. Bar-shaped guide holes extending towards the free ends are provided on both the first and second movable arms. The free ends of the two movable arms overlap staggeredly and are hinged by passing a third hinge stud through the bar-shaped guide holes. All three hinge studs are threadedly fitted with locking nuts, and axial through holes are provided on each hinge stud. The through holes on the first and second hinge studs are used for fixing screws to pass through and fix to the femur, and the through hole of the third hinge stud is used for a positioning screw to pass through and drill a hole at the center of rotation of the femoral head to make a mark. It can determine the patient's own original hip joint center, guide the selection of femoral prostheses, and avoid subjective errors caused by human eye observation.

The utility model relates to an anti-dislocation limiting device used after hip replacement, which comprises a left sponge, a right sponge, a left limiting mechanism arranged on the left sponge and a right limiting mechanism arranged on the right sponge, the left limiting mechanism comprises an arc-shaped cavity formed in the left sponge, a rotating shaft fixedly arranged on one side of the left sponge, an arc-shaped plate with one end rotationally arranged on the rotating shaft, an arc-shaped limiting plate fixedly arranged at the other end of the arc-shaped plate, a first limiting hole formed in the arc-shaped limiting plate and a plurality of second limiting holes formed in the left sponge. The limiting rod is movably arranged on the left sponge, and the binding assembly is arranged on the left sponge; the left limiting mechanism and the right limiting mechanism are the same in structure. By using the limiting device, patients with different leg lengths can be better adapted, and the limiting effect and the comfort of the patients are improved.

Systems and methods relating to pre-operative bone models are disclosed herein. A method for registering a pre-operative bone model, the method comprises receiving, by a processor, the pre-operative bone model; receiving a statistical shape model of the bone surface; and fitting the statistical shape model to the pre-operative bone model, wherein the pre-operative bone model is placed in a statistical approximation of an anatomic frame based upon the statistical shape model, wherein regions are defined on the statistical shape model; presenting the user with a visual representation of the pre-operative bone model, the visual representation including an indication of the regions; receiving, by the processor, locational data on a bone surface; registering, by the processor, the pre-operative bone model based on the locational data to generate a registered model.

The application discloses a locking device for a tibial base in knee replacement surgery, which comprises a tibial body and a tibial base, a locking screw one is arranged on the outer upper end of the tibial body, the tibial base is arranged on the inner upper end of the tibial body, and a bottom hole one is arranged on the inner middle end of the tibial base. The locking device for the tibial base in knee replacement surgery can make the tibial base be pulled down perpendicularly to the contact surface and not be loosened upward to generate a gap, reduce aseptic loosening, reduce the incidence of complications caused by aseptic loosening, greatly relieve the mental pressure and economic burden of patients, greatly save social public medical resources, make the tibial base keep fastening with the tibial body for a long time, facilitate the operation of an operator and ensure the accuracy of punching, prolong the fastening time between the tibial base and the tibial body, and reduce the frequency of later revision.

This invention belongs to the field of knee replacement surgery, specifically a pressure balance measuring device for knee replacement surgery, comprising a measuring device body; a base is provided below the measuring device body, and an adjustment and removal mechanism is provided between the measuring device body and the base; the adjustment and removal mechanism includes a fixing plate, which is located at the top of the base; through the design of the adjustment and removal mechanism, the size of the measuring device can be adjusted to accommodate different sizes for installation, solving the problem that existing devices do not have a component for slight height adjustment to accommodate different widths. Because the gaps between different patients' knee joints are different, when measuring, it is necessary to change the measuring device of the same size according to different gaps, resulting in frequent changes of measuring devices of different widths during installation, reducing work efficiency, and improving convenience.

A medial collateral ligament protector for meniscus resection during knee replacement surgery comprises a protector body that is elongated and has a flat cross-section. The rear end of the protector body is straightened and extended to form a handle, and the front end of the protector body is bent in an arc with an arc angle of 2π / 9 to form a shielding portion for shielding the medial collateral ligament. The total width of the front end of the shielding portion is 22-24 mm, and a trapezoidal opening groove is provided at the front end, biased toward the central axis of the protector body, for making way for the meniscus. The trapezoidal opening groove extends backward along the arc of the shielding portion. The groove depth of the trapezoidal opening groove is 20-24 mm, and the groove width of the trapezoidal opening groove is 6-8 mm, which is the large end of the opening. The angle between the oblique sides of the trapezoidal opening groove is 10°. The trapezoidal opening groove divides the shielding portion into a femoral isolation portion and a tibial isolation portion. The width of the femoral isolation portion is 9-12 mm, and the width of the tibial isolation portion is half of the femoral isolation portion.

An ultrasonic vibrating surgical instrument (1, 21) for removing bone adhesive in revision joint replacement surgery includes an elongated solid shaft (2, 5, 6, 7, 8; 22, 25, 26, 27, 28). At its proximal end (3; 23), it can be mounted to an ultrasonic vibration source so that the shaft (2, 5, 6, 7, 8; 22, 25, 26, 27, 28) serves as a waveguide for propagating ultrasonic vibrations. At its distal end, the shaft (2, 5, 6, 7, 8; 22, 25, 26, 27, 28) has an operating head (9, 29) that can act on the bone adhesive. The middle portion (6, 26) of the elongated shaft (2, 5, 6, 7, 8; 22, 25, 26, 27, 28) is provided with at least one row (10) of recesses (11) extending spirally along and around the portion (6, 26) of the elongated shaft (2, 5, 6, 7, 8; 22, 25, 26, 27, 28). Each recess (11) is separate from each adjacent recess (11). The recesses (11) may have a shallow spherical cap profile.

The application discloses a multifunctional device for adjusting bone cutting of a tibial side in knee replacement, which comprises a reference plate and a bone cutting guide plate. The bone cutting guide plate is provided with a bone cutting groove and a plurality of fixing pin holes below the bone cutting groove. The bone cutting groove is parallel to the bottom surface of the reference plate. A plurality of forward and backward inclination adjusting holes are formed in the reference plate. A forward and backward inclination adjusting rotating column is mounted in each forward and backward inclination adjusting hole. The length of the forward and backward inclination adjusting rotating column protruding from the reference plate is adjusted to adjust the included angle between the bone cutting groove and a bone cutting plane in the sagittal plane during bone cutting. A plurality of internal and external rotation adjusting holes are formed in the reference plate. An internal and external rotation adjusting rotating column is mounted in each internal and external rotation adjusting hole. The length of the internal and external rotation adjusting rotating column protruding from the reference plate is adjusted to adjust the included angle between the bone cutting groove and a bone cutting plane in the coronal plane during bone cutting. The device can not only adjust the bone cutting amount, but also adjust the bone cutting angle after the tibial bone cutting is completed, so that the bone cutting adjustment is more convenient, fast and accurate.

The invention relates to the field of biological medicine, in particular to application of catalpol in preparation of a periprosthetic osteolysis inhibitor, which is helpful for inhibiting aseptic loosening of a prosthesis, can remarkably reduce the occurrence rate of joint replacement postoperative complications and realizes more effective clinical intervention, thereby accelerating rehabilitation of a patient and improving the daily life quality of the patient.