73 results about "Cruciated ligament" patented technology

A method for stabilization of a cranial cruciate ligament in canines using a suture-button construct. The method includes the steps of drilling a hole across the femur and the tibia, passing a needle with a pull-through suture strand through the femoral hole, and applying a tensile force to the pull-through suture strand and a suture tape such that a first button lies sideways for passage through the femoral hole, advancing the first button through the femoral hole until the first button exits the femoral hole, passing the needle with the pull-through suture strand through the tibial hole, applying a tensile force to the pull-through suture strand and the suture tape such that the first button lies sideways for passage through the tibial hole, flipping the first button to engage it against the tibia, pulling free ends of the suture tape to advance a second button and to seat and secure it against the femur.

An adjustable, knotless button / loop / needle construct for fixation of cranial cruciate ligament deficient stifle. The adjustable, knotless construct includes two fixation devices (for example, two buttons), at least one flexible, adjustable loop attached to at least one of the fixation devices (e.g., the buttons), and two needles (each needle being attached to one fixation device, e.g., the buttons). The adjustable, knotless construct has an adjustable loop length and allows adjustment in one direction while preventing or locking the construct from loosening in the opposite direction, due to applied tensile forces. The construct and technique of the present invention provides an improved knotless system for cruciate ligament repair.

A method and device for finding isometric points in the joints of mammals for use in surgical repair of a joint. Isometric points are first identified in radiographic or other two dimensional images and then located in the actual joint. A method for repairing a cruciate ligament-deficient canine stifle employing the method and device for finding isometric points is described. A method and apparatus for locating the axis of rotation of a joint is also described.

<heading lvl="0">Abstract of Disclosure< / heading> A femoral guide for precisely positioning a guide wire on a bone surface of the femur includes a body having a lumen for receiving a guide wire and a tongue protruding from the body for engaging an edge or reference point on the bone surface with the tongue being spaced a predetermined distance from a longitudinal axis of the lumen. The lumen includes an opening allowing a guide wire extending through the lumen to contact the bone surface at a location spaced from the edge substantially the predetermined distance with the tongue engaging the edge. A stylus on the body can be driven into the bone to secure and stabilize the femoral guide prior to driving the guide wire into the bone through the lumen. With the guide wire driven into the bone, a bone tunnel can be formed substantially concentrically or coaxially along the guide wire such that a longitudinal axis of the bone tunnel will be disposed from the edge substantially the predetermined distance. Methods of precisely forming bone tunnels include the steps of engaging an edge of a bone surface with a tongue of the femoral guide, inserting a guide wire through a lumen of the femoral guide, driving the guide wire into the bone through the lumen and forming a bone tunnel in the bone along the guide wire such that a longitudinal axis of the bone tunnel will be disposed from the edge engaged by the tongue a distance substantially equal to the distance that the tongue is disposed from a longitudinal axis of the lumen.

A suture needle construct and method for extracapsular ligament reconstruction in mammals. The joint is first is first explored, and the damaged ligament and meniscus are debrided. The joint capsule is closed and a tunnel is created at the appropriate location in the proximal tibia for tibial fixation. Subsequent to the formation of the tibial tunnel, a suture having a substantially curved needle at one end and a substantially straight needle at the other end is brought in the proximity of the joint. The suture is passed around the lateral fabella using the substantially curved needle, then deep to the patellar ligament using the substantially straight needle, and through the tibial tunnel using the straight needle. The needles are cut off, and the sutures are tensioned over repair site.

The utility model relates to a rotationally pressurized and fixed steel plate for posterior cruciate ligament avulsion fracture, which belongs to the technical field of orthopedic medical devices and is used for tensioning a pulling wire. The technical solution is: the steel plate is circular, and there are four circular holes on the surface of the circular steel plate, the four circular holes are uniformly distributed on the steel plate surface, and the distance between the center of the four circular holes and the center of the circular steel plate is equal, wherein The center line of the two round holes is perpendicular to the center line of the other two round holes. There is a circle of pawls along the edge of the steel plate on one side of the steel plate. The braking direction of the multiple pawls is to surround the plate surface of the steel plate. same direction of the circle. The invention has the advantages of simple structure, convenient use and good self-locking effect, can effectively tighten the pulling wire, avoid the tension relaxation of the posterior cruciate ligament, and prevent the failure of the fixation operation due to the decrease of the tension of the posterior cruciate ligament.

The invention discloses a belt carrier fixing plate, and particularly relates to a reconstruction-type belt carrier fixing plate, and belongs to the technical field of the cruciate ligaments reconstruction. The belt carrier fixing plate comprises a first fixing plate (1), a second fixing plate (2) and a connecting line (3). The first fixing plate (1) and the second fixing plate (2) are connected by the connecting line (3). The middle of the first fixing plate (1) is provided with a groove (101). The middle of the groove (101) is provided with a thread hole (102) which penetrates the middle. The length of the groove (101) is greater than the length of the second fixing plate (2), and the depth of the groove (101) is not less than the thickness of the second fixing plate (2). The reconstruction-type belt carrier fixing plate is capable of increasing the contact area of the fixing plate and cortical bones, improving the stability of the fixing plate, and reducing the failing rate of fixation.

The invention discloses an artificial knee joint and its tibia component and femur component. The tibial component includes an upper surface, an inferior surface opposite the upper surface, and a first groove. The first groove runs through the upper surface and the lower surface and is used for accommodating the cruciate ligament. The tibial component is provided with at least one first protrusion on the lower surface. The first protrusion has a plurality of first through holes. The tibial component carries the femoral component. The femoral component includes a second groove. The second groove is also used to accommodate the cruciate ligament, and the femoral component is provided with at least one second protrusion on a surface away from the tibial component. The second protrusion has a plurality of second through holes. The present invention can stably install the artificial knee joint after implantation without using bone nails, and can adopt cruciate ligament-retaining surgery to maintain the stability of the joint and reduce the wear and tear of the new joint.

The invention discloses a visual knee joint cruciate ligament reconstruction method which comprises the steps of data acquisition, coordinate system unification, cruciate ligament spatial coordinate extraction, visual cruciate ligament reconstruction based on images, image measurement and the like. The method is capable of realizing CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) digital fusion, is simple and effective, and is capable of guiding knee join ligament surgery without increasing the burden of patients.

The application discloses a robot bionic knee joint variable in transmission ratio. The bionic knee joint variable in transmission ratio can comprise a knee joint drive device, an inner leg plate, anouter leg plate, a triangular support and a trifurcate linkage rod. The outer leg plate, the inner leg plate, the triangular support, a first short linkage rod, a second short linkage rod and the trifurcate linkage rod can form a cross four linkage mechanism. The cross four linkage mechanism designed by imitating animal knee joint cruciate ligaments can realize reduction ratio change when the kneejoint bends and stretches, increases the reduction ratio along with increase of the required force moment in the bending movement process, reduces the demand for the torque of a motor, avoids large size and large wight for the large motor, saves space, and improves control accuracy. The bionic knee joint variable in transmission ratio not only is compact in structure, but also can provide the vibrable reduction ratio, and can meet the demand for the high torque on the premise of selecting a small size motor reducer.

The invention discloses a knee-joint posterior cruciate ligament anatomical-reconstruction system used in the department of orthopaedics. The knee-joint posterior cruciate ligament anatomical-reconstruction system comprises an upper fixing part and a lower fixing part, wherein each of the upper fixing part and the lower fixing part comprises a positioning portion, an upper fixing portion and a lower fixing portion, and the opposite faces of the lower fixing portion of the upper fixing part and the lower fixing portion of the lower fixing part are provided with correspondingly arranged hinged supports. The knee-joint posterior cruciate ligament anatomical-reconstruction system positions the upper fixing part and the lower fixing part through positioning holes formed in the middles of the positioning portions of the upper fixing part and the lower fixing part and respectively fixes the upper fixing part and the lower fixing part on the thighbone and the tibia through upper fixing holes and lower fixing holes formed in the upper fixing portion and the lower fixing portion, adjusts the space between the upper fixing part and the lower fixing part and adjusts and fixes the included angle formed by the upper fixing part and the lower fixing part through matching between an adjusting stud and an adjusting nut, and then re-fixes the upper fixing part and the lower fixing part through guiding wires connected to a first lead hook and a second lead hook.