22 results about "Total knee replacement surgery" patented technology

The total knee replacement kit includes a femoral component, a tibial component, a patella component, and a set of couplable spacers selectively engageable with one another. The femoral component, the tibial component, and the patella in the kit are each selected based on a predetermined compatible size for implantation together as part of a total knee replacement system along with an implantation spacer that includes one of the set of couplable spacers in the kit having a desired thickness to position the tibial component from a tibia or multiple of the set of couplable spacers in the kit engaged with one another to achieve the desired thickness.

The invention relates to the field of medical instruments, in particular to an auxiliary device and method for determining a femoral prosthesis rotation force line in total knee arthroplasty, the auxiliary device comprises an auxiliary device body, and the auxiliary device body comprises a femoral far-end extorsion angle adjusting device and a buckling gap angle measuring device; a positioning needle mounting hole a and a positioning needle mounting hole c are formed in one end of the distal femur external rotation angle adjusting device, and a positioning needle mounting hole b and a positioning needle mounting hole d are formed in the other corresponding end of the distal femur external rotation angle adjusting device; the buckling gap angle measuring device comprises a buckling gap measuring head, and a handle is further installed on the buckling gap measuring head in a matched mode. Doctors are assisted to improve operation precision and operation efficiency, and errors and patient wounds are reduced; meanwhile, the invention further provides an auxiliary method which adopts a method of combining a measurement osteotomy technology and a gap balance technology to assist in determining a femoral prosthesis rotation force line. Good rotating force of the femoral prosthesis is guaranteed, good soft tissue balance is obtained, the treatment effect is good, and practicability is high.

A split-kneepad design addresses quality-of-life issues for individuals that have undergone total knee replacement surgery. A pair of cushion inserts with an inner beveled angle that, when worn by the user, are oriented parallel to the axis of the vertical scar resulting from surgery, and are shaped and positioned so that the padding makes contact with the user's knee in regions adjacent to the scar, but do not result in direct compressive force on the scar itself when the user kneels or otherwise applies force to the kneepad.

The invention relates to the technical field of medical auxiliary instruments, and particularly discloses a femoral external rotation osteotomy positioning device and a use method thereof. The femoral external rotation osteotomy positioning device comprises a mounting buckle, a positioning sheet and a plurality of positioning columns, the mounting buckle and the positioning column are respectively arranged close to two ends of the positioning sheet; the movable ends of the positioning columns extend towards the lower end face of the positioning piece, and the plane defined by connecting lines of the movable ends of all the positioning columns is parallel to the plane where the positioning piece is located. According to the thighbone external rotation osteotomy positioning device, the mounting buckle can be mounted on external rotation osteotomy guide plates provided by different prosthesis manufacturers and is matched with the external rotation osteotomy guide plates to adjust the external rotation position, so that the external rotation osteotomy position is accurately determined, the thighbone far end can be matched with a prosthesis after external rotation osteotomy, and the thighbone far end can be accurately positioned. Therefore, the good flexion gap and patella trajectory after total knee replacement are ensured, the knee joint function is recovered, and the service life of the prosthesis is prolonged.

Systems and methods for determining the fiber strain of a subject's ligament are provided. An example method may include capturing, via an imaging device, image data comprising two or more images of the ligament. The method may include determining, by one or more processors, a fiber strain of at least a portion of the ligament by analyzing the image data using digital image correlation, and based on the fiber strain, providing, by the one or more processors, guidance for performing a guided release of the ligament. The guided release may be performed using a template having a plurality of apertures, via which one or more perforations to the ligament of the subject are made using a perforation device. When applied to total knee replacement (TKA) procedures, the guided release techniques ensure optimal balance in the knee throughout both flexion and extension movements and enhances overall functionality of the knee joint.

An orthopaedic surgical instrument system includes a sensor adapter and multiple surgical instruments. The sensor adapter includes a housing with a force sensor positioned within the housing and a sensor contact configured to transfer force to the force sensor extending from the housing. Each surgical instrument includes a sensor connector configured to receive the sensor adapter at a predetermined location relative to the surgical instrument. Each sensor adapter further includes a registering feature to engage an anatomical feature of a patient or another surgical instrument. The surgical instruments may include a shim that may be attached to a gap assessment tool or a tibial insert trial. Methods associated with the surgical instrument system are also disclosed.

Systems and methods for determining the fiber strain of a subject's ligament are provided. An example method may include capturing, via an imaging device, image data comprising two or more images of the ligament. The method may include determining, by one or more processors, a fiber strain of at least a portion of the ligament by analyzing the image data using digital image correlation, and based on the fiber strain, providing, by the one or more processors, guidance for performing a guided release of the ligament. The guided release may be performed using a template having a plurality of apertures, via which one or more perforations to the ligament of the subject are made using a perforation device. When applied to total knee replacement (TKA) procedures, the guided release techniques ensure optimal balance in the knee throughout both flexion and extension movements and enhances overall functionality of the knee joint.

The utility model discloses a total knee arthroplasty postoperative knee joint active flexion and extension function exercise device which comprises a box body, sliding grooves are formed in the front side and the rear side of the top of the box body, and sliding blocks are arranged in the sliding grooves. When a patient takes exercises, the foot sole is put into a limiting belt and falls on the top of a pedal plate, a motor is started, the motor drives a gear to rotate, the gear drives a front toothed plate to move leftwards and drives a rear toothed plate to move rightwards, and the toothed plates drive a sliding block and the pedal plate to move towards the side away from the motor; the pedal plates drive the two feet of the patient to move, the knee joints are continuously opened and closed in the moving process of the two feet of the patient, the knee joints can be efficiently recovered, the two pedal plates are arranged on the device, the two knees can be simultaneously exercised and recovered, no assembly structure is arranged over the pedal plates, the shanks of the patient cannot be blocked, and the recovery efficiency is improved. The knee joint opening angle of the patient is large, and the knee joint recovery effect of the patient is improved.

A knee alignment measurement tool for use during a total knee replacement surgery may include the following main components: a sensor assembly, a display unit configured to power up, operatively control the individual sensors of the sensor assembly, and display the readings therefrom, and a flexible gooseneck cable operatively connecting the sensor assembly to the display unit. The sensor assembly may include a rigid base supporting a circuit board, a left sensor and a right sensor positioned adjacent to the left center, and a cover sealed to the rigid base to enclose the left sensor and the right sensor, wherein the cover does not abut the rigid base during the compression of the sensor assembly.

The present invention discloses a tibia (2) rotation alignment positioning device in total knee replacement surgery, which comprises, from left to right, a side rod one (3), a bottom rod (5), a support block (6), and a side rod two (4); the bottom rod (5) is parallel to the length direction of the support block (6) and fixed to the lower part of the support block (6); the lower ends of the side rod one (3) and the side rod two (4) are respectively fixed to the two ends of the bottom rod (5); and the side rod one (3) and the side rod two (4) are perpendicular to the support block (6). 6) length direction; a cross bar (7) is fixed on the top of the support block (6), and the cross bar (7) is arranged parallel to the bottom bar (5); a slide bar (8) is slidably fixed on the cross bar (7), and the length direction of the slide bar (8) is perpendicular to the length direction of the cross bar (7), and a positioning nail (9) passes through the upper ends of the side bar (3) and the side bar (4) to fix the upper ends of the side bar (3) and the side bar (4) to the corresponding points of the medial epicondyle concave and the lateral epicondyle convex of the femur (1). The rotation alignment positioning device of the present invention enables the rotation alignment to be obtained accurately, the method is simple, and solves the problem that the rotation alignment cannot be simply drawn in the existing medicine.

A method of treating or managing pain or inflammation in a patient following a total knee replacement (TKR) by administering to the knee joint of said patient biodegradable drug delivery compositions. The biodegradable drug composition comprises a triblock copolymer containing a polyester and a polyethylene glycol and a diblock copolymer containing a polyester and an end-capped polyethylene glycol, as well as an NSAID.

The application discloses a total knee replacement surgery image inspection method and device. A CT image of a professional DCM, i.e. a CT image with a metal rod, is read in, maximum and minimum gray scale values of the image are obtained, and more than 75% of the gray scale values are taken, which include the metal rod and some scattered points. A maximum connected threshold is used to extract and remove points other than the metal rod. At this time, the image only has the metal rod. The image is binarized, the number of layers of the image, the height of the image and the space height of a layer are obtained, the number of layers of the image within 10 mm is calculated, a center point is taken every 10 mm of the total number of layers, the vectors of adjacent points are calculated, the error is obtained by subtracting the adjacent vectors, a reasonable range is defined, all errors within the range are qualified, and otherwise, the errors are unqualified. Therefore, the error rate of planning and bone cutting navigation according to unqualified pictures in the later stage can be reduced, the leg bone of the picture is consistent with the leg bone of the patient, and the time of manual judgment is reduced.

1. Name of the product in this design: Graphical User Interface for Orthopedic Surgical Navigation and Control of Electronic Devices. 2. Intended use of this design: for use in an electronic device. 3. The key design features of this product are its graphical user interface. 4. The image or photograph that best illustrates the design's key points: the front view. 5. Application of the graphical user interface: for navigation control and information display in robot-assisted orthopedic surgery. 6. Human-computer interaction method of graphical user interface: On the surgery type selection page shown in the main view, select the "Total Knee Replacement Surgery" card to enter the change state diagram 1. Select the item to open the preview page of the knee joint scheme shown in Figure 2, which represents the change state. Click "Navigation" in Change State Diagram 2 to enter Change State Diagram 3. Click "Next" to proceed to the changed state diagram (Figure 4). Click "Finish" to enter the changed state diagram (Figure 5). Click the right button next to "Navigation Steps" to enter the changed state diagram 6. Click "Verify" to enter the changed state (Figure 7). Click the right-hand button next to "Joint Registration" to enter the changed state (Figure 8). Click "Gap" to enter the changing state (Figure 9). Click "Full Process" to enter the change status diagram (Figure 10). Click the right button next to "Intraoperative Assessment" to enter the changed state (Figure 11). Click "OK" to enter the changed state (Figure 12). Click the button with "A" at the bottom to enter the changed state (Figure 13). Click "Apply" to enter the changed state (Figure 14). Click the right button next to "Osteotomy Navigation" to enter the changed state (Figure 15). The gray-coated area represents the content image.

A knee alignment measurement tool for use during a total knee replacement surgery may include the following main components: a sensor assembly, a display unit configured to power up, operatively control the individual sensors of the sensor assembly, and display the readings therefrom, and a flexible cable operatively connecting the sensor assembly to the display unit. The sensor assembly may include a rigid base supporting a circuit board, a left sensor and a right sensor positioned adjacent to the left center, and a cover sealed to the rigid base to enclose the left sensor and the right sensor, wherein the cover does not abut the rigid base during the compression of the sensor assembly.

A knee rehabilitation active motion machine (KRAM) and method of use. The KRAM provides key benefits for users after undergoing knee replacement or other surgeries. Studies have indicated that pedaling and balance exercises provide better recovery for total knee replacement patients. The adjustable features of a pedaling unit and a moving assembly allow the user to use the KRAM through the entirety of their rehabilitation process. For post-surgery rehabilitation, users will be able to adjust the KRAM parameters to limit their desired flexion and extension due to stiffness or soreness. As rehabilitation progresses, users can electronically increase the flexion and extension angles they can achieve, all the way to a full range of motion of approximately 135 degrees maximum flexion and full extension of approximately 20 to 0 degrees.

Systems, methods, and devices are described for a robot-assisted orthopedic surgical system mounted on a bone. The system can realize precise positioning of implants, soft tissue balance and tool navigation during surgery, especially during partial or total knee arthroplasty. The system employs a robotic arm with an end effector mounted to a bone to achieve precise positioning of surgical tools, implant location and soft tissue balance. The configurable robot system only needs a small amount of training of surgeons, is visual in operation, is similar to a traditional instrument operation, and is small in occupied area. The system can be used in cooperation with an existing traditional instrument, an instrument special for a patient, a sensor auxiliary system and a computer auxiliary system, the operation time does not need to be increased, and a safer and more accurate operation can be achieved by means of a robot auxiliary system and the technology of the robot auxiliary system.

A knee alignment measurement tool for use during a total knee replacement surgery may include the following main components: a sensor assembly, a display unit configured to power up, operatively control the individual sensors of the sensor assembly, and display the readings therefrom, and a flexible cable operatively connecting the sensor assembly to the display unit. The sensor assembly may include a rigid base supporting a circuit board, a left sensor and a right sensor positioned adjacent to the left center, and a cover sealed to the rigid base to enclose the left sensor and the right sensor, wherein the cover does not abut the rigid base during the compression of the sensor assembly.

A femoral extramedullary positioning osteotomy device is used for total knee arthroplasty and comprises a positioner configured to position a femoral mechanical shaft and comprising a positioning ring configured to position the center of a femoral head; the positioning rod extends away from the positioning ring from the positioning ring, and the free end of the positioning rod is configured to position the middle point of the thighbone inner and outer condyles at the thighbone far end; the osteotomy guide plate is configured to position an osteotomy position based on the thighbone mechanical axis positioned by the positioner and comprises an osteotomy guide plate body and an extension part extending from the osteotomy guide plate body away from the osteotomy guide plate body, and the extension part is configured to limit the osteotomy guide plate to slide along the thighbone mechanical axis so as to determine the osteotomy position. The femoral extramedullary positioning osteotomy device is convenient to operate, easy to master and beneficial to popularization, marrow expanding operation is avoided, trauma and bleeding are reduced, the occurrence rate of fat embolism and deep vein thrombosis is reduced, the accuracy of femoral far-end osteotomy is improved, and clinical development of primary hospitals is facilitated.

Described within are systems, methods and apparatus for a bone mounted robotic-assisted orthopedic surgery system for precise implant position, soft tissue balancing and guidance of tools during a surgical procedure, particularly partial or total knee replacement procedure. The system features a bone mounted robotic arm with end-effector for precise positioning of surgical tool, position in of implants and balancing of soft tissues. The reconfigurable robotic system requires minimal training by surgeons, is intuitive to use similar to conventional instrumented surgery and has a small footprint. The system works with existing, conventional instruments, patient specific instruments, sensor-assisted systems and computer-assisted systems and does not require increased surgical time and safely provides the enhanced precision achievable by robotic-assisted systems and computer-assisted technologies.

The invention relates to the technical field of postoperative patient walking assisting, and discloses a total knee replacement postoperative patient walking assisting method with a hexapod robot as a prototype, and the method comprises the steps: collecting the height and hip joint height of a patient; based on the height of the patient and the hip joint height, the walking height of the walking aid is dynamically adjusted by controlling the prediction model; the front terrain environment is recognized through the sensor assembly, so that the walking aid executes the procedures of advancing on the flat ground, climbing steps and going down stairs. The problems that a traditional walking aid is poor in universality and limits the movement range of a patient are solved, and the movement stability of the patient, the comfort of a user and the mechanical safety are improved.

A knee rehabilitation active motion machine (KRAM) and method of use. The KRAM provides key benefits for users after undergoing knee replacement or other surgeries. Studies have indicated that pedaling and balance exercises provide better recovery for total knee replacement patients. The adjustable features of a pedaling unit and a moving assembly allow the user to use the KRAM through the entirety of their rehabilitation process. For post-surgery rehabilitation, users will be able to adjust the KRAM parameters to limit their desired flexion and extension due to stiffness or soreness. As rehabilitation progresses, users can electronically increase the flexion and extension angles they can achieve, all the way to a full range of motion of approximately 135 degrees maximum flexion and full extension of approximately 20 to 0 degrees.

This is a rehabilitation board for use after total knee replacement surgery. The back is non-slip. The front is smooth, allowing you to wear socks on the board and use the soles and heels to train your knee joint range of motion. The scales on both sides of the rehabilitation board are aligned with the user's line of sight.