64 results about "Knee joint operation" patented technology

There is provided a method and system for determining a distal cut thickness and posterior cut thickness for a femur in a knee replacement operation, the method comprising: performing a tibial cut on a tibia; performing soft tissue balancing based on a desired limb alignment; measuring an extension gap between the femur and said tibial cut while in extension; measuring a flexion gap between the femur and the tibial cut while in flexion; calculating a distal cut thickness and a posterior cut thickness for the femur using the extension gap and the flexion gap and taking into account a distal thickness and posterior thickness of a femoral implant; and performing said femoral cut according to the distal cut thickness and posterior cut thickness.

There is provided a method and system for determining a distal cut thickness and posterior cut thickness for a femur in a knee replacement operation, the method comprising: performing a tibial cut on a tibia; performing soft tissue balancing based on a desired limb alignment; measuring an extension gap between the femur and said tibial cut while in extension; measuring a flexion gap between the femur and the tibial cut while in flexion; calculating a distal cut thickness and a posterior cut thickness for the femur using the extension gap and the flexion gap and taking into account a distal thickness and posterior thickness of a femoral implant; and performing said femoral cut according to the distal cut thickness and posterior cut thickness.

A joint replacement kit for use in a joint replacement procedure replacing a portion of a body joint. The kit includes a cutting guide and a trial component wherein the cutting guide and trial component are packaged together. There is also provided a method for replacing a portion of a body joint. The method includes providing a joint replacement kit having a cutting guide and a trial component, positioning the cutting guide against an end portion of a bone, cutting the end portion of the bone with a cutting instrument, positioning the trial component to the cut end portion of the bone, and disposing of the cutting guide and trial component.

The invention concerns monolithic foam sleeves that comprises titanium or titanium alloy foam having a porosity of 50 to 85% and possess a proximal end, a distal end, an interior wall that defines an interior channel and extends from the proximal end to the distal end; and a terraced outer surface that tapers such that said sleeve is widest at the distal end and most narrow at the proximal end.

A method of performing knee-joint surgery includes positioning the tibia and the femur such that the knee-joint is disposed in a bent position. An incision is made to expose the knee-joint. A retractor support is mounted to a surgical table. The skin and flesh layers proximate the knee-joint are retracted utilizing a retractor that is attached to the retractor support which is mounted to a surgical table.

A system is provided for positioning a cutting guide on a femur of a knee to make a cut along a distal end of the femur during knee surgery. The system may generally include an adjustable femoral attachment member configured to attach to a cut distal end of the femur, a cutting guide removably attachable to the femoral attachment member and configured to guide a surgical saw to make an additional cut on the distal end of the femur, and a force sensor for positioning between the femoral attachment member and a proximal end of a tibia of the knee. The force sensor may include a medial portion for sensing a medial force in the knee and a lateral portion for sensing a lateral force in the knee.

The invention discloses a knee-joint operation adjusting and fixing distraction device which comprises a foot posture adjusting fixing apparatus capable of performing stepless continuous position adjustment and fixing in the front-back direction of a guide rail and rotating at 3360 degrees, a foot-thigh separation distance quick and fine adjusting device capable of achieving quick adjustment and fine adjustment of a separation distance between the foot and the thigh in the vertical direction of the shank, and a thigh posture fixing apparatus capable of adjusting rotation of the fixing apparatus according to a foot posture, wherein the lower end of the foot-thigh separation distance quick and fine adjusting device is connected with the foot posture adjusting fixing apparatus, and the upper end of the foot-thigh separation distance quick and fine adjusting device is connected with the thigh posture fixing apparatus. The foot-thigh separation distance quick and fine adjusting device comprises a quick adjusting rod mechanism with the lower end fixed on a foot fixing boot, wherein the upper portion of the quick adjusting rod mechanism is connected with a fine adjusting mechanism, and the upper end of the fine adjusting mechanism is connected with the thigh posture fixing apparatus. The knee-joint operation adjusting and fixing distraction device can meet continuous or temporary fixing and position adjustment under the condition that the knee joint of a patient is at different bending and stretching angles and inward and outward turning angles and any-time quick, fine and accurate adjustment of the foot, shank, knee joint and thigh positions of the patient and angle postures.

The invention provides a calibration method and system, a robot, a computer device and a navigation system so as to calibrate a hand-eye matrix and a swing saw end matrix of a knee joint surgical robot at the same time. A grinding gun is fixed to the tail end of a mechanical arm of the robot, a swing saw-shaped connecting rod is fixed to a grinding gun rotating head, namely the swing saw end, a target is fixed to the position, away from the swing saw end of the grinding gun, of the fixed camera, based on a nine-point calibration method, the fixed camera is used for shooting the target to obtain a calibration image, a rotation matrix Ri and a translation vector ti of a coordinate system {N} at the tail end of a mechanical arm relative to a base coordinate system {M}, a rotation matrix T anda translation vector e of a coordinate system {J} of a target relative to a swivel coordinate system {O} of a grinding gun, and a rotation matrix Rci and a translation vector tci of the coordinate system {J} relative to a coordinate system {L} of a fixed camera are obtained, and based on a multi-coordinate system conversion closed loop formed by all the coordinate systems, and the Rx matrix, thetx vector, the pt vector and the St matrix are solved by using a least square method.

The invention relates to a customized compound bone cutter for femoral condyle which is used for cutting the bone of the femoral condyle in knee surgery. The customized compound bone cutter for femoral condyle comprises a paracondyloid positioning surface, a remote-end positioning surface, a paracondyloid fixing hole, a paracondyloid fixing inclined hole, a remote-end fixing inclined hole, a force line inspection line, a femoral condyle prosthesis positioning hole, a femoral condyle remote-end bone cutting groove, a paracondyloid bone cutting groove, a front inclined-surface bone cutting groove, a hypocondyle bone cutting groove, a rear inclined-surface bone cutting groove and an intercondylar bone cutting groove; the femoral condyle model number is determined by virtue of preoperative planning based on the CT data of a patient, and then the contact surface, the fixed point and each cutting surface can be determined; the customized compound bone cutter for femoral condyle has the advantages that various parameters are more accurate, the used operating tools are greatly reduced, the operating time is greatly shortened, the infection risk is reduced, pulp exposing is avoided, wound is reduced, and the dependency on the experience of a doctor is reduced; as a result, the customized compound bone cutter for femoral condyle is especially suitable for operations not suitable for conventional operating tools.

A system for providing feedback during ligament insertion in knee joint orthopedic surgeries includes an imaging device providing knee joint articular surface geometry data, a position measuring device providing distal ligament insertion sites, a strain measuring device providing ligament reference strain, a drive system providing a prescribed kinematic path for the knee joint and an adaptive migration application. The adaptive migration application receives inputs including the knee joint articular surface geometry data, the distal ligament insertion sites, the ligament reference strain and the prescribed kinematic path for the knee joint and generates outputs including sets of isotonic, hypertonic and hypotonic points representing proximal insertion sites of ligament fiber associated with prescribed distal ligament insertion sites.

The invention discloses a support frame for knee joint surgery, comprising a bottom plate, a lifting bar arranged on the bottom plate and an arc plate arranged at the top of the lifting bar; the lifting bar comprises a main screw and a threaded sleeve which are in threaded connection, the main screw is connected to the bottom plate, the arc plate is connected to the top of the threaded sleeve, a front carrier plate and a rear carrier plate are hinged respectively to the front and rear of the arc plate through spindles, the part of the outer wall of the threaded sleeve close to its bottom is provided with a support plate, a vertically arranged adjusting screw is arranged on the support plate and is rotationally connected with the support plate, a slider is also included, the threaded sleeve is passed through the slider and slidably connected to the same, the adjusting screw is passed through the slider and in threaded connection with the same, and the front carrier plate and the rear carrier plate are connected to the slider respectively through obliquely arranged support rods. The support frame with such structure can keep suitable height and suitable flexion position for a knee joint, and therefore, operation is facilitated for surgeons, manpower resource consumption is recued greatly, and unnecessary damage is avoided.

The invention provides surgical equipment capable of achieving vertical traction, separation and reduction of the tibia of a knee joint and the femur, and belongs to the field of medical instruments.The surgical equipment comprises a fixing device and a base, wherein the fixing device comprises a first supporting frame and a second supporting frame, the first supporting frame and the second supporting frame are vertically arranged, and the connection portion of the first supporting frame and the second supporting frame is rotationally connected with the base; the axis line, rotating relativeto the base, of the fixing device is perpendicular to the plane where the first supporting frame and the second supporting frame are located. The surgical equipment capable of achieving vertical traction, separation and reduction of the tibia of the knee joint and the femur aims to achieves precise, quick, convenient and noninvasive vertical traction, separation and reduction of the tibia of the knee joint and the femur when the human body is in the normal position or the side position, the first supporting frame and the second supporting frame are vertically arranged to make the knee joint ina 90-degree vertical state, and the knee joint is exposed; in addition, the tail end of the femur and the tibial plateau do not interfere with each other in the operation process.

The invention discloses an auxiliary robot for total knee joint replacement surgery. Two groups of stereo vision and light source mechanical arms with seven joints are designed, and the function of rapid and accurate stereo reconstruction of knee joint surgery is achieved; two mechanical arms with supporting and clamping positioning components are designed, the fixation of thighs and cruses in thetotal knee joint replacement surgery is achieved, and thus knee joints are fixed, and guarantee is provided for the accuracy of the surgery; two mechanical arms for turnover clamping of skin and muscle tissues are designed, and four novel turnover clamping components work together to realize minimally invasive and accurate turnover of skin and muscle tissues of a knee joint incision and reduce secondary trauma of the surgery incision turnover; an surgery mechanical arm with four executive components is designed, the knee joint skin and muscle tissue cutting, incision hemostasis, leg bone cutting, leg bone drilling and other functions for the knee joint replacement surgery are achieved, real-time function switching is achieved, and the accuracy, stability and efficiency of the surgery canbe greatly improved.

The invention belongs to the technical field of medical apparatuses, and discloses a knee joint operation bracket. The knee joint operation bracket comprises a supporting base, a first supporting component for supporting a thigh and a second supporting component for support a shank, wherein the bottom end of the first supporting component is hinged to the supporting base; the top end of the firstsupporting component is hinged to the top end of the second supporting component; the bottom end of the second supporting component is constructed to be in the situation that the position of the bottom end of the second supporting component on the supporting base can be regulated and positioned; and the length of the first supporting component and / or the second supporting component can be constructed to be regulated and positioned. The knee joint operation bracket disclosed by the invention is wide in applicability, and can meet the requirements of different patients.

A method of performing knee-joint surgery includes positioning the tibia and the femur such that the knee-joint is disposed in a bent position. An incision is made to expose the knee-joint. A retractor support is mounted to a surgical table. The skin and flesh layers proximate the knee-joint are retracted utilizing a retractor that is attached to the retractor support which is mounted to a surgical table.

This disclosure relates to systems and methods for managing patients of knee surgeries. A pre-operative patient questionnaire user interface is associated with a future knee operation of the patient.Patient input data is indicative of answers of a patient in relation to the pre-operative patient questionnaire. A processor of a computer system evaluates a statistical model to determine a predictedsatisfaction value indicative of satisfaction of the patient with the future knee operation. The statistical model comprises nodes stored on data memory representing the patient input data and the predicted satisfaction value, and edges stored on data memory between the nodes representing conditional dependencies between the patient input data and the predicted satisfaction value. The processor then generates an electronic document comprising a surgeon report associated with the future knee operation to indicate to the surgeon the predicted satisfaction value.

The invention discloses a gap balance measurer, which comprises a femur spreading plate and a tibia spreading plate, wherein a femur osteotomy reference plate is arranged at one end of the femur spreading plate; a tibia osteotomy reference plate is arranged at one end of the tibia spreading plate; an indication surface plate is arranged at the end, which is far away from the femur osteotomy reference plate, of the femur spreading plate; a gap between the femur spreading plate and the tibia spreading plate can be adjusted through a gap adjusting mechanism; a locking mechanism is arranged on one side, which is far away from the femur osteotomy reference plate, of the tibia spreading plate; a balance angle indicating mechanism is arranged between the femur osteotomy reference plate and the indication surface plate; a gap indicating mechanism is arranged on one side of the indication surface plate; and a tension indication mechanism is also arranged on one side of the indication surface plate. According to the gap balance measurer disclosed by the invention, whether the balance of soft tissues at the knee joint is met in an osteotomy process or not can be verified in a plurality of steps in a knee joint operation process, the balance state of the soft tissues is quantified, and a doctor is assisted in finding and placing the most accurate knee joint prosthesis.

The invention discloses an auxiliary limiting device for a knee joint operation, and belongs to the technical field of medical instruments. The device comprises a thigh fixing clamping plate (1), a shank fixing clamping plate (4), a flexion and extension adjusting device (12) and a turning adjusting device (13). The flexion and extension adjusting device is composed of a flexion and extension adjusting nut (8), a large clamping plate connecting piece shaft sleeve (9), an adjusting shaft (10) and a small clamping plate connecting piece shaft sleeve (11). The turning adjusting device (13) is composed of a screw (5) and a turning adjusting nut (6). The thigh fixing clamping plate (1) is connected with the large clamping plate connecting piece shaft sleeve (9) of the flexion and extension adjusting device (12) through a large clamping plate connecting piece (3). The turning adjusting device (13) is connected with the small clamping plate connecting piece shaft sleeve (11) of the flexion and extension adjusting device (12) through a small clamping plate connecting piece (7). The auxiliary limiting device has the advantages of being simple in structure, convenient to operate, capable of saving operation time and adjusting the flexion and extension and inward and outward turning angles of the knee joints and the like.

The invention discloses a blood splattering resistant device for an operating room. The device comprises a shielding part and a rinsing part. The shielding part comprises a cylindrical casing, a convex ring, and a liquid discharging pipe, the rinsing part comprises a box body, a box cover, an immersible pump, a connecting pipe, a plurality of fixing clamps, an annular pipe, a plug pipe, and a plurality of rinsing pipes; the upper end of the cylindrical casing is of a closed structure, the bottom end of the cylindrical casing is of an opened structure, and a liquid storage groove is integrallyformed in the inner part of the cylindrical casing and is flush with the side edge of the bottom end in the inner part of the cylindrical casing. According to the blood splattering resistant device for the operating room, sprayed blood can be completely blocked, and can prevent the blood from spraying from an incision of a hip and knee joint of an orthopaedics patient on a body of a medical staff,the sprayed blood can be prevented from dropping downward, perspectivity is good, it can be ensured that the medical staff can see the real-time situation of the operating position of the hip and knee joint of the orthopaedics patient clearly, the medical staff is facilitated to operate on the patient, and it is effectively ensured that the hip and knee joint replacement surgery of the orthopaedics patient is carried out successfully.

The invention discloses a position fixation device for preoperative position fixation of patients accepting hip joint and knee joint operations and a using method of the position fixation device. Theposition fixation device comprises a bed board and limiting rods, wherein inserting holes, in which the limiting rods can be inserted and fixed, are distributed in the bed board; the inserting holes in the width direction of the bed board, which keep the longest distance, keep an occupied width which can at least accommodate a human body under a lateral position; and the distribution density of the inserting holes in the bed board is such designed that the limiting rods which are inserted are adjustable in distance therebetween. According to the position fixation device provided by the invention, on the basis of cooperation between the bed board provided with the inserting holes and U-shaped pedal rods and the limiting rods, a good assisted fixation effect can be achieved on keeping a lateral position in a hip joint surgery and on leg buckling in a knee joint surgery, so that the quantity of surgery assistants is reduced, labor intensity of the surgery assistants is reduced and a problem of errors in the hip joint and knee joint surgeries is relieved; meanwhile, an operating space of surgeons is widened; the device is simple in structure and convenient to operate; and two functionsof conducting the hip joint and knee joint surgeries on a same board can be achieved.

The invention discloses a lifting control system for a hip and knee joint surgical robot, which comprises a base plate, trundle heightening blocks fixed on the base plate and universal wheels arranged on the trundle heightening blocks, and is characterized by further comprising a mounting frame fixed on the base plate and a central control box arranged on the mounting frame, a plurality of switching blocks are fixed below the base plate, electric ground supports are fixed to the lower end faces of the switching blocks, and the central control box is connected with the electric ground supports through cables. Automatic height increasing of the surgical robot is achieved in an electric mode, limiting and fixing of the surgical robot are achieved in the mode, it is guaranteed that the surgical robot is in a stable working state in the working process, and then stable operation is guaranteed.

The invention relates to a knee joint fixer, in particular to a split adjustable knee joint fixer, aiming at solving the problems that the labor force is wasted by manually fixing a knee joint of a patient at the specific angle in the knee joint operation, and the operation is influenced because the fixed angle of the knee joint of the patient changes and the limb body of the patient is instable due to the physical draining. The knee joint fixer comprises a base plate, two positioning strips, an adjusting shaft and a fixing boot, wherein each positioning strip is provided with a plurality of clamping grooves and is serrated in the appearance; the end faces on the backs of two positioning strips are arranged on the upper end face of the base plate in parallel and are fixedly connected with the upper end face of the base plate; the adjusting shaft is fixedly connected with the heel part of the fixed boot which is positioned between the two positioning strips; and two ends of the adjusting shaft are respectively clamped in a corresponding clamping groove on one positioning strip. The invention is used for fixing the knee joint and ankles of the patient in the knee joint operation.

Tools for resecting the femur include an anchoring device, a three-way alignment guide and a six way alignment guide attachable to the anchoring device, a resection guide attachable to the three-way alignment guide and equipped with couplings for trackers, an A-P sizer, a femoral sizing block bushing attachable to the six-way alignment guide, a 4-in-i femoral cutting block, a 5-in-i positional alignment guide attachable to the six-way alignment guide, a pair of diodes, and a 5-in-one cutting block. Methods of utilizing the apparatus are also disclosed.

The invention relates to a knee joint surgical body position variable fixing apparatus. The knee joint surgical body position variable fixing apparatus comprises a supporting platform, at least one transverse guide rail distributed in an axis-Y direction, at least one longitudinal guide rail distributed in an axis-X direction and a first slide block installed on the longitudinal guide rail, wherein the first slide block is provided with a first fastening element for locking the first slide block onto the longitudinal guide rail, the transverse guide rail is fixed on the supporting platform, the longitudinal guide rail is fixedly connected with a second slide block, the longitudinal guide rail is installed on the transverse guide rail by virtue of the second slide block, the second slide block is provided with a second fastening element for locking the second slide block onto the transverse guide rail, the first slide block is hinged to a transverse swinging seat by virtue of a first hinged shaft which is distributed in the axis-X direction, and the transverse swinging seat is hinged to a longitudinal swinging block by virtue of a second hinged shaft which is distributed in the Y-axis direction. By adopting the knee joint surgical variable body position fixing apparatus, the position of a knee joint can be sterilely adjusted by a surgeon during the surgical operation; and moreover, the knee joint surgical body position variable fixing apparatus is simple in operation, convenient to install and capable of being widely popularized and applied clinically.

The invention relates to the technical field of knee joint treatment, discloses a knee joint angle measurement mode and an application mode thereof, and solves the problems that an existing knee jointangle measurement device is inconvenient to wear due to the fact that multiple parts are matched for use, and is inconvenient to use due to the fact that people with different heights have differentleg lengths. The knee joint angle measurement mode comprises an angle measurement assembly. The angle measurement assembly comprises a fixed arm, one end of the fixed arm is rotationally connected with a rotating arm, and the lower portion of the rotating arm is rotationally connected with a pedal groove through a connecting plate. During use, a first movable plate and a second movable plate can be adjusted according to the leg length of a measured person, so that the device can be suitable for people with different heights, and use and wearing are convenient; the body surface temperature is monitored in real time through a temperature sensor, and the body surface temperature and surrounding body surface temperature changes are analyzed; and a digital display angle gauge can monitor the motion angle of a patient in real time, so that the hip joint or knee joint operation patient is forbidden to use certain actions after an operation, and the rehabilitation exercise guiding effect is performed on the patient.

The invention provides a human body lower limb movement simulation device which comprises a pelvis model, a thighbone model and a tibia model and further comprises a base, a first seat, a first fixing part, a linkage assembly, a second seat and a second fixing part. The base is provided with a flat surface, a guide rail is arranged on the flat surface, and the pelvis model is arranged on the base and is the same as the supine position of a human body; the first seat and the guide rail form a moving pair; the first fixing part is used for fixing and supporting the thighbone model; the linkage component forms a spherical pair with the first seat and the first fixing part respectively; the second seat and the guide rail form a moving pair; the second fixing part is used for fixing and supporting the tibia model and forms a spherical pair with the second seat. The limb movement mode of a real human knee joint is highly restored, the knee joint force line and the thighbone center position can be accurately determined when a knee joint surgery robot is matched for simulation operation, and powerful support is provided for clinical application of knee joint surgery and development of related products.

The invention discloses an adjustable pressure type balloon spreader in knee joints. The spreader includes a minimally invasive puncture balloon unit and an adjustable pressure type syringe unit connected to the minimally invasive puncture balloon unit and injecting fluid into the minimally invasive puncture balloon unit; the adjustable pressure type syringe unit is connected to the minimally invasive puncture balloon unit through an extension tube; the minimally invasive puncture balloon unit includes a puncture spindle tube which can be punctured into a knee joint; the sidewall on the tail end of the puncture spindle tube is provided with through holes; and the peripheries of the through holes are coated with a soft balloon that can be expanded to open the compartment of the knee joint under the action of the injected fluid. The provided spreader is simple in operation and convenient in using, and can conveniently open the compartment of the knee joint through a minimally invasive incision; the spreader can accurately control supporting force, and the stress of supporting parts are dispersed; the spreader can be operated in the safe ranges of articular cartilage, meniscus and ligament; and therefore, the difficulty of knee joint operations can be reduced, operation efficiency can be enhanced, and postoperative recovery can be accelerated.