56 results about "Knee joint operation" patented technology

Provided herein are methods of performing knee surgery, which include comparing a lateral distal femoral angle (LDFA) of the knee with a medial proximal tibial angle (MPTA) of the knee and determining a pre-disease alignment of the knee therefrom. Additionally, prognostic and diagnostic methods for use in knee surgery as well as methods of determining an angle of resection for a distal femur and / or a proximal tibia during knee surgery are provided herein. Also provided is an apparatus for assisting a surgeon in performing surgery on a knee of a patient, the apparatus comprising a processor configured for performing the aforementioned methods. A computer-readable medium having stored thereon a computer program, which, when executed by a computer, causes the computer to perform the aforementioned methods is also provided.

The invention relates to the technical field of surgical navigation and positioning, in particular to a knee joint surgical navigation and positioning method and system based on neural network and medical image.The method comprises the steps that a surgical printing model is constructed, three-dimensional scanning is conducted on the surgical printing model, a three-dimensional knee joint image is obtained, two-dimensional scanning is conducted on the surgical printing model, and an azimuth knee joint image set is obtained; performing automatic registration on the orientation knee joint image set and the three-dimensional knee joint image to obtain a training registration parameter set, training a plurality of neural network models according to the training registration parameter set to obtain a plurality of adaptive registration models, and integrating the adaptive registration models to obtain an integrated registration model, and inputting the intraoperative two-dimensional image and the three-dimensional knee joint image into the integrated registration model to obtain a three-dimensional navigation positioning image. According to the method, the accuracy of navigation positioning in the knee joint operation can be improved, and the image registration time in the knee joint operation is shortened.

The embodiment of the invention provides a calibrator and a navigator data processing method, and the calibrator comprises an upper frame body which is used for accommodating a navigator, and the navigator comprises a standard device and a measurer; the lower frame body is connected with the upper frame body and used for supporting the upper frame body, a plurality of supporting faces are formed at the bottom of the lower frame body, and the supporting faces are different in angle and direction relative to the upper frame body. The calibrator provided by the invention is used for assisting the navigator in data verification and assisting in effectively improving the force line measurement and evaluation accuracy in the knee joint operation.

A system and method for determining adjustments to a position or orientation of an implant relative to a bone such as to stabilize a knee in mid-flexion. Assessing native and / or planned joint gaps for a knee joint procedure to balance the knee in mid- flexion may involve determining one or more changes to a planned implant component position and / or orientation relative to a bone that achieves an intended spatial relationship to the gaps between the bones throughout the knee's range-of-motion such as a more rectangular shape compared to the shape of the distances prior to the changes.

The present invention discloses a posterior cruciate ligament protector, which belongs to the technical field of medical devices. The posterior cruciate ligament protector is used for knee joint surgery, including a tube body, the tube body has an axial through hole, a sliding rod is arranged in the axial through hole, a protective piece is arranged at the lower end of the tube body, the protective piece has an arc-shaped groove opening toward the side for accommodating the posterior cruciate ligament, and the tube body and the protective piece are an integrated structure; a cutting piece is arranged at the lower end of the sliding rod, the cutting piece is arranged in the arc-shaped groove, a cutting edge is arranged at the end of the cutting piece, the sliding rod and the cutting piece are an integrated structure, and a push rod is arranged at the upper end of the sliding rod. The present invention is easy to operate and has a good protective effect on the posterior cruciate ligament. As a conventional instrument that meets multiple functions, the present invention can realize the functions of protecting the cruciate ligament during surgery and actively stimulating cutting of the tibial plateau when needed.

The invention discloses an intra-operative adjustable knee joint operation guiding device and a using method thereof, and relates to the technical field of medical instruments, the intra-operative adjustable knee joint operation guiding device comprises a tibia guide plate, a thighbone front side guide plate, a thighbone far end guide plate, a four-in-one rotary adjusting plate, a metal handle and a four-in-one osteotomy plate, the swing saw performs osteotomy on the femur through a four-in-one osteotomy groove in the four-in-one osteotomy plate; the guiding device can achieve real-time adjustment in the thighbone ectropion angle operation, real-time adjustment in the thighbone ectropion angle operation is achieved, and flexion and extension gap balance based on ligament judgment of an operator is further achieved.

1. The name of the design product: knee joint surgery gasket. 2. The use of the design product: gasket used in total knee arthroplasty; used for measuring knee joint pressure and changes and intraoperative soft tissue balance adjustment operation. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: assembly 1 perspective view 1. 5. Other components that need to be explained: component 1 is a knee joint surgery measurement gasket; component 2 is a knee joint surgery adjustment gasket.

The invention aims to provide an adjustable knee joint flexion maintaining device for knee joint replacement surgery, and relates to the technical field of medical instruments. A thigh supporter and a shank supporter are arranged on a supporting plate; during use, the thighs and the shanks of a patient are placed on the thigh plates and the shank plates of the thigh supporting device and the shank supporting device, the thigh plates are supported below the thighs, the shank plates are supported below the shanks, and the peripheries of knee joints are fully exposed; by rotating the thigh screw rod and the shank screw rod, the angles of the thigh plate and the shank plate are adjusted, and the knee joint buckling angle is adjusted; the distance between the thigh supporter and the shank supporter is adjusted through sliding of the thigh supporter; the height of the lower portion of the shank plate is adjusted through stretching of the telescopic rod, the bending angle of the knee joint and the height of the shank are further adjusted in cooperation with rotation of the shank plate, and the position of the lower limb can be better adjusted according to actual knee joint operation conditions.

1. The name of the design product: positioning osteotomy apparatus. 2. The use of the design product: medical equipment, for positioning femoral osteotomy in knee joint surgery. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view.

The utility model relates to the technical field of medical instruments, and discloses a foot auxiliary device for a knee joint operation, which comprises a fixing clamp, a first straight rod piece, a first corner direction adjusting piece, a healthy foot bearing plate, a second corner direction adjusting piece and an affected foot palm center supporting piece which are connected in sequence, the fixing clamp is used for clamping and fixing the foot auxiliary device and an operating bed, the healthy foot bearing plate is suspended outside the operating bed and used for bearing healthy feet, and the affected foot palm center supporting piece is in lap joint with the upper side of the tail of the operating bed. Thus, the healthy foot can be stably placed on the healthy foot bearing plate, discomfort caused by suspension of the healthy foot is effectively avoided, the palm center of the affected foot can be supported on the affected foot palm center supporting piece, the buckling angle is kept, and operation of an operator is facilitated.

The present invention provides a tibial prosthesis structure for knee joint surgery. The tibial prosthesis structure includes: a tibial body; a repair prosthesis for filling a defect site at the metaphysis of the tibial body. The repair prosthesis includes a first patch assembly and a second patch assembly, and the first patch assembly is arranged to be position-adjustable relative to the second patch assembly, so as to fill an inclusive defect site at the metaphysis of the knee joint by changing the relative positional relationship between the first patch assembly and the second patch assembly. The tibial prosthesis structure of the present invention solves the problem that it is difficult for the specifications of the existing filling prosthesis to match the tibial defect site.

The present application relates to the field of medical devices, and in particular to an ankle cradle for knee joint surgery, comprising a mounting seat and a bracket slidably connected to one end of the mounting seat, the bracket forming an embedding space for the ankle joint to be embedded on a side away from the mounting seat, two ankle cradle plates are hinged on a side of the bracket away from the mounting seat, the two ankle cradle plates are respectively located on opposite sides of the embedding space, and a pulling component for pulling the end of the ankle cradle away from the bracket to rotate toward the embedding space to clamp the human ankle joint is provided between each ankle cradle plate and the bracket. The present application has the effect of reducing the sliding of the ankle cradle on the human ankle joint and ensuring the stability of the ankle cradle installation.

The utility model provides an anti-skidding medical pasting film for knee joint surgery, which comprises a pasting film main body, one side of the pasting film main body is provided with a fixing assembly, the fixing assembly comprises a fixing film, the left side and the right side of one side of the fixing film are respectively connected with a connecting film, the surface of the fixing film is transversely and longitudinally provided with a plurality of convex blocks, and the convex blocks are connected with the fixing film. The left side and the right side of the fixing film are connected with fixing belts, and one end of each fixing belt is connected with a bonding strip. According to the anti-skid medical pasting film for the knee joint operation, the fixing film with the multiple protruding blocks and the two connecting bands and the fixing bands with the bonding strips are arranged on one side of the medical pasting film, when the knee joint operation is carried out on a patient, the fixing film with the multiple protruding blocks can be bonded to the bottom of the foot of the patient, and therefore the patient can conveniently carry out the knee joint operation. When the legs of a patient are bent and placed on an operating bed for use, a protection effect can be achieved, and manual supporting operation of medical staff is reduced.

Embodiments of the present application are applicable to the technical field of computer-aided medical treatment and surgical planning, and provide a single-condyle mobile platform surgical planning method and a computer device. The method comprises: determining a plurality of prostheses to be planned, the prostheses comprising femoral prostheses and tibial prostheses, and the femoral prostheses all being spherical prostheses; placing the femoral prostheses with the distal end point of a pre-constructed femur three-dimensional model as the center, and adjusting the femoral prostheses to target femur positions; calculating femur section coverage rates of the femoral prostheses at the target femur positions; determining a target femoral prosthesis from the plurality of femoral prostheses according to the femur section coverage rates; determining a target tibial prosthesis from the plurality of tibial prostheses, and performing preoperative planning of a single-condyle mobile platform knee joint replacement surgery based on the target tibial prosthesis and the target femoral prosthesis. By using the above method, preoperative prosthesis planning can be performed for single-condyle knee joint surgery of a mobile platform.

This application discloses a knee joint surgery auxiliary fixation device, belonging to the field of knee joint surgery technology. It includes a handle, a swing arm with a sliding hole, the handle being slidably disposed in the sliding hole, one end of a steel cable extending into the swing arm and connected to the handle, and the other end of the steel cable connected to a movable rod. The movable rod has teeth, and a shaft has grooves adapted to the teeth. One end of a spring is connected to the movable rod, and the other end of the spring is connected to the shaft. This application is a knee joint surgery auxiliary fixation device. By pulling the handle, the movable rod is moved under the action of the steel cable until the teeth on the movable rod disengage from the grooves on the shaft. At this point, the movable rod can rotate within a bushing, thus rotating the swing arm and shaft. This allows control of the swing arm and footrest to rotate to a target angle, conforming to the foot contour and providing foot support.

This utility model discloses a multi-module support and positioning frame for knee joint surgery, including a stainless steel base with four foot-operated protrusions on the base to meet the fixation requirements of the knee joint at different angles. These protrusions allow the patient's lower limb to switch between at least five stable positions, enabling unrestricted leg movement. The surface of each foot-operated protrusion has a gel-like support portion. This multi-module support and positioning frame for knee joint surgery, by providing four foot-operated protrusions of varying heights in a stepped distribution on the stainless steel base, can meet the fixation requirements of the knee joint at different angles, allowing the patient's lower limb to switch between at least five stable positions, ensuring unrestricted leg movement. It solves the problem of a single fixation method. The gel-like support portion on the surface of the foot-operated protrusions increases patient comfort, reduces local pressure injury to the skin, reduces discomfort during surgery, and optimizes ergonomic design.

A computer-implemented method of preoperatively planning a surgical procedure on a knee of a patient including determining femoral condyle vectors and tibial plateau vectors based on image data of the knee, the femoral condyle vectors and the tibial plateau vectors corresponding to motion vectors of the femoral condyles and the tibial plateau as they move relative to each other. The method may also include modifying a bone model representative of at least one of the femur and the tibia into a modified bone model based on the femoral condyle vectors and the tibial plateau vectors. And the method may further include determining coordinate locations for a resection of the modified bone model.

The invention relates to a thighbone and tibia gap measuring device and system and a knee joint operation system. The thighbone and tibia gap measuring device comprises an air bag unit, an upper platform unit, a lower platform unit, a limiting unit and a pressure monitoring unit. The femur and tibia gap measuring device has the advantages that the femur and tibia gap measuring device is of an ultra-thin structure and can be conveniently placed in a joint gap of a femur and a tibia before an operation, so that gap measurement before osteotomy is met; through pressure monitoring, the joint gap value can be obtained in real time, so that the osteotomy efficiency is improved, the osteotomy amount is reduced, and excessive osteotomy is avoided; the method is high in universality and can be suitable for different measurement scenes; cost is low, and large-scale popularization and use are facilitated.

The invention belongs to the technical field of knee joint operation instruments, and particularly relates to a knee joint operation auxiliary device which comprises a positioning part, an adjusting part, a limiting part, a supporting part, an auxiliary platform and a lifting part. The positioning part is connected with the limiting part through the adjusting part; a limiting device is arranged on the adjusting part; the supporting part comprises a locking piece and a supporting arm; one end of the supporting arm is fixedly connected with the auxiliary platform, and the other end is hinged with the auxiliary platform; at least three rotating joints are arranged in the supporting arm; one end of the locking piece penetrates through the supporting arm and then is fixedly connected with the limiting platform; at least two mounting grooves are formed in the auxiliary platform; the lifting part comprises a limiting frame, an adjusting piece and a traction piece; one end of the limiting frame is detachably connected with the mounting groove, and the other end is hinged with the traction piece; one end of the traction piece away from the limiting frame is a drag hook; at least two adjusting grooves are formed in the side, away from the traction piece, of the limiting frame. One end of the adjusting piece is hinged to the middle of the traction piece, and the other end penetrates through the limiting frame and then is detachably connected with the adjusting groove.

A system for estimating mechanical characteristics of soft tissue which is connected to a patient's patella during surgery on a knee joint which comprises a patella and a femur, comprises a memory device for data relating to the compressive load on a load sensor. The system also comprises a first load sensor having a first thickness for location between the patella and the femur, and a second load sensor having a second thickness for location between the patella and the femur, in which the second thickness is different from the first thickness. The memory device receives compressive load data from the first and second load sensors during flexion of the knee with the first or second load sensor located between the patella and the femur. The system also includes a processor device for calculating a measure of the extensibility of soft tissue connected to a patient's patella based on the effect on the measured compressive load of switching from the first load sensor to the second load sensor.

The utility model discloses a knee joint post-operation leg pressing sandbag, and particularly relates to the technical field of medical instruments, the sandbag comprises a sandbag body, the interior of the sandbag body is hollow, the two sides of the sandbag body are open, the top end of the sandbag body is provided with a through hole, the through hole is communicated with the interior of the sandbag body, and the inner side of the through hole is in contact with the knee of a patient. A straightening structure is arranged at the bottom end of the sandbag body so that the knee area of a patient can be straightened. The sandbag body structurally comprises a protective sleeve and filler on the inner side of the protective sleeve. The filler is made of soft materials or has good rebound resilience. And a zipper is arranged on the side of the sandbag body. On the basis that the technical problem is solved, the defect that a traditional sandbag is heavy is overcome.

The invention provides a retractor device for knee joint surgery, which belongs to the technical field of medical instruments and comprises a vertical supporting module, a transverse supporting module is mounted at the upper end of the vertical supporting module, a positioning module is mounted between the transverse supporting module and the vertical supporting module, and a retractor module is mounted on one side, farther from the vertical supporting module, of the transverse supporting module; the vertical supporting module comprises a bearing table, an assembling column is fixedly connected to the center of the top end of the bearing table, a U-shaped opening formed in a mirror image mode is reserved in the side wall of the bottom end of the bearing table, a restraining unit used for restraining and fastening the rotating strip is arranged in the center of the top end of the bearing table, the restraining unit comprises a cylinder B, and the bottom end of the cylinder B is rotationally connected with the bearing table. The problems that in the process of knee joint surgery at present, most of the drag hooks are held by medical staff in a handheld mode, the possibility that the drag hooks get loose due to hand discomfort or fatigue caused by long-time holding of the drag hooks, certain risks exist, and the progress of the surgery is slowed down are solved.

The invention relates to the field of knee joint surgery equipment, in particular to a knee key endoscope surgery positioner and an electromagnetic navigation robotic.The knee key endoscope surgery positioner comprises a handle, a positioning arm movable block is slidably connected in the handle, a guide sleeve is installed at the bottom of the handle, a guide needle is arranged in the guide sleeve in a matched mode, and a positioning arm is fixedly connected to the top face of the positioning arm movable block; the end, away from the positioning arm movable block, of the positioning arm is fixedly connected with a hydraulic bending arm structure, the hydraulic bending arm structure communicates with a hydraulic angle adjusting component, the end, away from the positioning arm movable block, of the hydraulic bending arm structure is provided with an electromagnetic positioning generation module, and an angle adjusting mechanism used for adjusting the positioning arm is installed in the handle. And an electromagnetic positioning receiving module is mounted on the guide pin. Positioning is carried out through electromagnetic induction, the problem that positioning in a common sight glass mode cannot be carried out in the puncture process can be solved, and precise surgery is achieved in cooperation with a mechanical arm.

The utility model discloses a kind of intraoperative adjustable knee joint surgery guiding device, it is related to medical instrument technical field, and it include: tibia guide plate, femur front guide plate, femur distal guide plate, four-in-one rotary adjusting plate, metal handle, four-in-one osteotomy plate, wherein four-in-one osteotomy plate is fixed on femur by screw thread nail hole, and bone cutting is carried out to femur by four-in-one osteotomy slot on four-in-one osteotomy plate of swing saw;The guiding device can realize femur valgus angle intraoperative real-time adjustment, realize femur external rotation angle intraoperative real-time adjustment, and more realize flexion-extension gap balance based on ligament judgment basis of operator.

The pedestal pan comprises a supporting frame, sliding columns are slidably connected into sliding grooves formed in the upper end of the supporting frame, the upper ends of the four sliding columns are fixedly connected with the top wall of a protective cover, an avoiding groove is formed in the middle of the upper end of the protective cover, and the pedestal pan further comprises a lifting mechanism and an adjusting mechanism; the lifting mechanism comprises mounting boxes, vertical rods, connecting plates and a lifting plate, the mounting boxes are arranged on the left side and the right side of the interior of the supporting frame correspondingly, the vertical rods are arranged on the front side and the rear side of the top wall of each mounting box correspondingly, and the lower ends of every two vertical rods adjacent in the longitudinal direction are slidably connected with sliding holes correspondingly formed in the upper end of one connecting plate correspondingly; according to the pedestal pan used after the knee joint operation, discomfort or pain of a patient in the using process is reduced, the requirements of different patients can be met, direct pressure on the knee joint can be reduced, the bending degree of the knee joint in the standing or sitting process is reduced, and the rehabilitation process is promoted.

The invention relates to a suture instrument for knee joint surgery, in particular to a suture instrument for knee joint surgery and an assembling method thereof.The suture instrument comprises a handle and a hollow suture hook, one end of the suture hook is movably connected with the front end of the handle, the other end of the suture hook can penetrate into a knee joint, and an elastic steel wire is arranged in an inner cavity of the suture hook. A suture line can penetrate into the inner cavity of the suture line hook from the handle; after the other end of the suture hook is punctured into a knee joint, the suture line is pushed from the rear end of the handle to extend out of the inner cavity of the suture hook, and then the elastic steel wire is pushed to abut against the extending part of the suture line until the suture hook exits, so that the suture line is effectively prevented from being brought out, the operation efficiency is improved, and the operation difficulty is reduced. In addition, one-time puncture thread passing success can be ensured, and the risk of tissue damage is greatly reduced.

The invention relates to the field of knee joint operation equipment, in particular to an ultrasonic-assisted turning electronic arthroscope. Comprising a handle, a control circuit board is installed in the handle, a movable handle is arranged on the handle, a guide pipe is installed on one side of the handle, the control circuit board is electrically connected with an upper computer, a supporting rod, a flexible supporting rod and a magnetic telescopic part are movably arranged in the guide pipe in a penetrating mode, and the flexible supporting rod is installed at the end, away from the handle, of the supporting rod; the magnetic telescopic part is electrically connected with the control circuit board and located in the guide pipe, a detection rotating head is installed at the end, away from the supporting rod, of the magnetic telescopic part, an ultrasonic detection part is installed on the side face of the detection rotating head, and an image collection part is installed at the end, away from the supporting rod, of the detection rotating head. And the ultrasonic detection part and the image acquisition part are electrically connected with the control circuit board. According to the invention, the focus part and the vascular nerve part can be accurately identified in the operation process, and the accurate implementation of the operation is realized.

The embodiment of the invention is suitable for the technical field of computer-aided medical treatment and surgical planning, and provides a single-condylar movement platform surgical planning method and computer equipment, the method comprises the following steps: determining a plurality of to-be-planned prostheses, the prostheses comprise thighbone prostheses and tibia prostheses, and the thighbone prostheses are spherical prostheses; placing the thighbone prosthesis by taking a thighbone far end point in a pre-constructed thighbone three-dimensional model as a circle center, and adjusting the thighbone prosthesis to a thighbone target position; calculating a thighbone section coverage rate of the thighbone prosthesis at the thighbone target position; a target femoral prosthesis is determined from the multiple femoral prostheses according to the femoral section coverage rate; and determining a target tibial prosthesis from the plurality of tibial prostheses, and carrying out preoperative planning of a unicompartmental knee joint replacement operation based on the target tibial prosthesis and the target femoral prosthesis. By adopting the method, preoperative prosthesis planning can be carried out aiming at the unicompartmental knee joint operation of the movable platform.

The utility model discloses a joint positioning auxiliary device for a lower limb knee joint operation, which redesigns a stable bearing pad and constraint fixing mode of limbs at two ends of a joint compared with a traditional manual auxiliary fixing and pillow supporting fixing mode of medical staff and a common intra-operative joint fixing mode. The arranged supporting mechanism can flexibly adjust the height of the joint when the joint is bent through the stretching and retracting of the supporting rod in cooperation with the stretching and retracting of the thigh base plate and the shank base plate, the lifting requirements of limbs with different heights can be met, and patients with different limb lengths can also be flexibly met; the top end of the bearing cushion mechanism is adjusted to ascend and descend by the supporting mechanism, the angle of the bearing cushion mechanism is changed by being matched with the bottom end of the bearing cushion mechanism driven by the adjusting mechanism, the bearing cushion structure can independently adjust and fix the angles of limbs at the two ends of a bone joint, and the requirements of different joint positioning and limb fixing are met conveniently.

The invention provides a knee joint postoperative rehabilitation training system which comprises a closed garment and a second connecting piece, the cross section of the closed garment and the cross section of the second connecting piece are semicircular, the closed garment and the second connecting piece are directly connected through a hinge piece, and a first sliding groove and a second sliding groove are formed in the side face of the closed garment and the side face of the second connecting piece respectively. A first sliding block and a second sliding block are arranged in the first sliding groove and the second sliding groove respectively, a telescopic air cylinder is hinged between the first sliding block and the second sliding block, and the closed clothes and the second connecting piece are provided with closed clothes so that the closed clothes and the second connecting piece can be matched with the closed clothes and the second connecting piece to form trouser legs. Leg supporting wearing is provided for a knee joint surgery patient, the telescopic air cylinder is used for stretching out and drawing back to assist the closing clothes and the second connecting piece to conduct position change, data are sent to the processor through the angle sensor and the track sensor, and the processor analyzes the data and then adjusts the movement of the telescopic air cylinder so as to adapt to the user.