254 results about "Tibial bone" patented technology

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes an articular surface, and the femoral component includes a femoral articular surface having decreasing radii of curvature posteriorly. The articular surface of the tibial insert includes an increased anterior lip to improve stability of the femoral component.

An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and / or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon.

The invention provides a tibial prosthesis preoperative planning method and device, electronic equipment and a storage medium, a tibial condyle region point set is obtained by combining an operative side condyle region point set and a normal condyle region point set, a tibial coordinate system is constructed according to the tibial condyle region point set, a final reference point of a prosthesis posture is calculated in the tibial coordinate system, and the final reference point of the prosthesis posture is calculated according to the final reference point. The method comprises the following steps: acquiring a final reference point of a prosthesis posture, calculating the size of an operation-side condyle prosthesis region according to the final reference point of the prosthesis posture, and matching an optimal prosthesis body size and an optimal mounting posture according to the size of the operation-side condyle prosthesis region, so that feature information of a normal condyle is effectively utilized to assist in modeling, a more reasonable tibia coordinate system is constructed, and the accuracy of the model is improved. And the accuracy of prosthesis type matching and prosthesis posture planning is improved.

An ankle joint replacement prosthesis comprises a tibia prosthesis assembly and a talus prosthesis, the tibia prosthesis assembly comprises a tibia prosthesis body and a cushion block, the tibia prosthesis body and the cushion block are in an arc shape with the middle bent upwards on the sagittal plane, the cushion block is arranged at the bottom of the tibia prosthesis body in a sleeving mode, and the surface of the upper portion of the tibia prosthesis body is a tibia joint face. The surface of the lower portion of the cushion block is a first articular surface, the surface of the upper portion of the talus prosthesis is a second articular surface, the second articular surface is in an arc shape with the middle bent upwards on a sagittal plane, the surface of the lower portion of the talus prosthesis is a talus joint surface, and the first articular surface is matched with the second articular surface. When the prosthesis is implanted, only the articular cartilage and the subchondral bone need to be treated at the far end of the tibia, so that the bone at the far end of the tibia is reserved to the maximum extent, the anatomical integrity of the bone is guaranteed, the stability of the prosthesis is enhanced, the service life is prolonged, and the clinical operation effect is improved.

The device is a tibial plateau leveling osteotomy (TPLO) plate is used to stabilize a stifle joint in an animal in veterinary surgery after a torn cranial cruciate ligament. The TPLO plate has a proximal portion and a distal portion, connected by an offset portion. The proximal portion and at least a portion of the distal portion are formed on two parallel planes.

There is provided a tibial component comprising a tibial tray having a superior side and an inferior side, and a support member connected to the inferior side of the tibial tray, the support member having a stem portion, the stem portion including one or more fins and a first arm angled relative to a second arm. In one form, the fins have a curvature that extends away from the stem portion. In another form, the first arm defines an opening sized to receive an anchor wherein the anchor is configured to penetrate a portion of bone and the opening in the first arm. Optionally, the stem portion includes a first portion having a first cross sectional area and a second portion having a second cross sectional area wherein the first cross sectional area is larger than the second cross sectional area. The fins and arms can include rail protrusions.

The invention relates to the technical field of joint prostheses, in particular to an ankle joint prosthesis based on a bionic bone trabecula, the ankle joint prosthesis comprises a tibia prosthesis (10), a talus prosthesis (30) and a liner (20), the tibia prosthesis (10) and the talus prosthesis (30) are both made of metal materials and are integrally formed through 3D printing, the tibia prosthesis (10) comprises a tibia body (101), and the liner (20) is arranged on the tibia body (101). The first bone contact layer (100) is integrally formed on the tibia body (101), and the first bone contact layer (100) is of a porous structure of which the pore diameter is gradually reduced from outside to inside; the talus prosthesis (30) comprises a talus body (301) and a second bone contact layer (300) integrally formed on the talus body (301), and the second bone contact layer (300) is of a porous structure with the aperture gradually reduced from outside to inside.

The invention provides a tibial prosthesis which comprises a tibial platform provided with a containing groove and a communicating groove, the containing groove is communicated with the upper surface of the tibial platform, and the communicating groove is communicated with the groove bottom wall of the containing groove and the lower surface of the tibial platform; the gasket structure is arranged in the containing groove in a floating mode in the vertical direction; the bone growth body is connected to the lower portion of the gasket structure and located in the communicating groove, and the gasket structure can drive the bone growth body to penetrate out of the tibial plateau downwards when floating in the vertical direction. According to the technical scheme, the problem that in the prior art, the time needed for combining the sclerotin and the prosthesis of a patient is long can be effectively solved.

TPLO plate includes first and second distal holes and a body with a proximal portion positioned over a proximal tibia segment and a distal portion extending along a longitudinal axis and positioned over a distal tibia segment. The first hole includes an elongated portion extending along the longitudinal axis and an offset portion extending distally from the elongated portion along an offset axis at an angle relative to the longitudinal axis. The second hole extends through the distal portion along the longitudinal axis in alignment with the elongated portion and includes a sloped compression surface along a distal portion. The first hole is such that, when a distal compression to osteotomy cut is applied via insertion of a bone fixation element into the distal portion, the element translates along the offset axis from a central axis to an intersection point to provide a cranial compression to the cut.

An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A number of methods for using the surgical instruments to prepare the bones is also disclosed.

A tibia prosthesis comprises a tibia gasket, a platform support and a pushing part. A first fixing block connected with the femoral condyle is arranged on the upper portion of the gasket, a first opening is formed in the middle of the gasket, and second fixing blocks are arranged in three surrounding second openings. A third opening is formed in the first groove in the side face of the gasket, and a first limiting block with a fifth opening is arranged in a fourth opening in the bottom. A spring in the third opening pushes the second limiting block to be clamped into the fifth opening. The platform support is provided with a sixth opening and a second groove, a fourth limiting block capable of being opened is arranged in a seventh opening in the upper portion, and a fifth limiting block is hinged into the second groove. A pushing part is arranged in a lower shell of the platform support and comprises a hexagon screw and a fixing ring, a ninth opening is formed in the screw, and the fixing ring is connected with the rotating part through a ratchet wheel. And during rotation, the rotating part pushes the first limiting block to enter the seventh opening, the fourth limiting block is retracted and limited after being opened, and meanwhile, the second limiting block is clamped into the fifth opening to be fixed. And the second fixing block is clamped into the ninth opening to connect the screw and the gasket. And when the rotating part enters the second groove, the fifth limiting block is pushed to be clamped into the second groove, and overall fixing is completed.

The utility model provides a biological tibia prosthesis and a biological knee joint prosthesis. The biological type tibia prosthesis comprises a tibia support, a tibia prosthesis middle column is arranged on the bottom face of the tibia support, a rotatable ratchet wheel is arranged on the tibia prosthesis middle column, at least part of the ratchet wheel protrudes out of the outer surface of the tibia prosthesis middle column, a stop assembly is further arranged in the tibia prosthesis middle column, and the stop assembly can limit one-way rotation of the ratchet wheel. When the tibia prosthesis center pillar moves towards the inside of the medullary cavity, the ratchet wheel rotates under the action of the wall of the medullary cavity, and when the tibia prosthesis center pillar moves towards the outside of the medullary cavity, the ratchet wheel is kept in a static state under the action of the locking assembly. The biological knee joint prosthesis comprises the biological tibia prosthesis. According to the biological type tibia prosthesis, when the middle column of the tibia prosthesis moves towards the inside of a medullary cavity, the ratchet wheel can still be embedded into bone cortex and has a fixing function, and when the middle column of the tibia prosthesis moves towards the outside of the medullary cavity, the ratchet wheel is kept in a static state under the action of the stop assembly and has an anti-pulling effect.

A lower leg massager includes a mechanism to enable movement of a treatment member when massaging target areas of a lower leg, that allows the treatment element mounted to the treatment member to be firmly pressed against the target areas, and that achieves an effective massage. The lower leg massager includes a vertical massage mechanism to move vertically for performing a massage operation on a calf and shin, i.e. treatment target areas. The vertical massage mechanism includes an outer treatment member which covers and presses the lateral side of the shin; a rear treatment member, disposed inwardly of the outer treatment member so as to lie behind the calf, for pressing the back side of the calf; and a pressing mechanism to enable a pressing massage to the target areas by varying the position of one of the outer treatment member and the rear treatment member.

The invention provides an artificial prosthesis assembly for an ankle joint replacement operation, and belongs to the technical field of ankle joint prostheses. Comprising a talus arc plate, an arc-shaped guide rail is installed at the top of the talus arc plate, rivets are installed in the talus arc plate, a joint soft plate is connected to the top of the arc-shaped guide rail in a sliding mode, and a tibia installation plate is installed above the joint soft plate; and a rivet fixing assembly is mounted at the top of the tibia mounting plate. By arranging the elastic adjusting assembly and the sliding lubricating assembly, the contact area with bone tissue can be remarkably increased, the initial stability of the prosthesis is enhanced, the separation risk of the prosthesis is reduced, and the elastic relaxation degree of the prosthesis is adjusted and controlled, so that the modulus of the prosthesis is dynamically matched with the bone elasticity of a patient, and the bone interface stress concentration risk of the prosthesis is reduced; meanwhile, the movement resistance of the prosthesis is reduced through ball lubrication, material fatigue and loss caused by dry friction between the prostheses are avoided, and the service life of the prosthesis is prolonged.

The invention provides a distraction device and distraction equipment suitable for wedge high tibial osteotomy, and relates to the technical field of medical surgical instruments, the distraction device comprises a support, a first knife group, a second knife group and a first actuating part; the first cutter set is arranged on the support and protrudes out of the support in the first direction. The second cutter set is arranged on the support and protrudes out of the support in the second direction forming a first included angle with the first direction. And the first actuating part is configured to drive the bracket to rotate around the fixed shaft of the rotating shaft, so that the first knife group or the second knife group faces and extends into the bone seam. Wherein the thickness of the first knife group is configured to be smaller than that of the second knife group.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the femorotibial joint, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.

The present invention discloses an auxiliary support device for patients with lower limb thrombosis, which relates to the technical field of medical rehabilitation equipment, including lower limb sleeves and foot sleeves, wherein two lower limb sleeves and two foot sleeves are provided, and a sanitary isolation replacement component for keeping the auxiliary lower limb clean is installed on the lower limb sleeve, and a blowing activity auxiliary component for heat dissipation and auxiliary joint movement is installed on the outer surface of the lower limb sleeve. The auxiliary support device for patients with lower limb thrombosis replaces the isolation cotton roll under the action of the rotation and reeling of the reeling shaft, thereby ensuring that the patient's lower limb sleeve remains in a better clean state when the patient uses it next time, avoiding bacterial infection after the patient wears the unsanitary lower limb sleeve, and exercising the patient's foot joints by reminding the patient's feet to perform an upward lifting action. Lifting the feet upward can exercise the calf muscles, including the gastrocnemius muscle and the tibialis anterior muscle, and can also help promote blood circulation in the lower limbs, which helps to reduce lower limb edema and prevent the risk of thrombosis.

The invention relates to the technical field of joint prostheses, in particular to an interchangeable joint prosthesis which comprises a thighbone prosthesis, a tibia platform and a tibia liner. The femoral prosthesis comprises a half-shell prosthesis, a first stand column, a second stand column and a bone trabecula structure. The first stand column and the second stand column are fixedly arranged on the inner wall of the half-shell prosthesis. A dismounting table is arranged on the surface of the tibia platform, a clamping groove matched with the tibia liner is formed in the surface of the tibia platform, a press-fit edge matched with the clamping groove is fixedly arranged on the surface of the tibia liner, and the tibia liner is used for supporting a thighbone prosthesis to move; a fixing wing and a fixing stand column are arranged on the surface of the other side of the tibial plateau. By arranging the thighbone prosthesis, the tibia platform and the tibia liner, the size of the joint prosthesis can be freely changed in the actual operation process, operation prosthesis selection can be conveniently adjusted in the operation, finally, the joint prosthesis is used for biological fixation, and the long-term stability of the prosthesis after implantation is guaranteed.

The invention relates to the field of medical instruments, and discloses a modular system tibia component which comprises a tibia support base body, a metal sleeve, a PE sleeve and a screw, the upper surface of the tibia support base body is of a polished type, a groove is formed in one side of the tibia support base body, a conical dovetail is arranged in the middle of the tibia support base body, and the metal sleeve is connected with the PE sleeve. A conical hole is formed in the top of the tibia support base body, the conical hole of the tibia support base body is used for being connected with a metal sleeve or a PE sleeve, a stand column is arranged at the bottom of the tibia support base body, a cavity is formed in the bottom of the stand column, and a first internal thread is arranged in the middle of the stand column. Through the combination of the conical dovetail, the conical hole and the stand column on the tibia support base body, the metal sleeve, the PE sleeve, the fixed tibia pad, the rotary tibia pad and other components, flexible combination is conducted according to different operation requirements, and therefore the adjustment requirement of a doctor for an osteotomy scheme in the operation process is greatly reduced.

A fixing device for improving fracture stability of an HTO hinge comprises a supporting plate, an attached wing plate, a first locking nail, a second locking nail and a plurality of fixing screws. The wing-attached wing plate is fixed to the supporting plate through a first locking nail, and a second locking nail is driven into the wing-attached wing plate from the rear inner side to the front outer side. The novel fixing device is provided for the outer hinge fracture in the inner side opening wedge-shaped tibia high-position osteotomy, the side wing plate is additionally arranged on the basis of an original supporting plate, the second locking nail which is nailed from the upper portion of the rear inner side to the lower portion of the front outer side is provided for supporting, and therefore the stability of the fracture is improved.

The utility model relates to a tibia stem machining tool which comprises a square body. The body is provided with a concave profiling placing groove; the profiling placing groove is provided with a pressing part which can slightly deform outwards in the radial direction; an extrusion part is movably arranged on the inner side of the body; and the extrusion part can drive the pressing part to expand outwards to clamp the tibia stem. The utility model has the advantages of reasonable structure, practical function, simplicity and convenience in operation, high precision, good stability and the like, and can effectively meet various requirements in the tibia stem processing process.

The tibial plateau prosthesis comprises a tibial plateau surface and reinforcing ribs connected to a non-articular surface of the tibial plateau, the reinforcing ribs comprise a first reinforcing rib and a second reinforcing rib, the first reinforcing rib is arranged in the length direction of the tibial plateau prosthesis, the second reinforcing rib is arranged in the length direction of the tibial plateau prosthesis, and the third reinforcing rib is arranged in the length direction of the tibial plateau prosthesis. The second reinforcing ribs are perpendicular to the first reinforcing ribs, and a plurality of second reinforcing ribs can be arranged according to needs. The reinforcing rib is provided with a wire groove or a through hole structure, and the non-articular surface of the tibial plateau is provided with a pit structure with an unlimited shape. The strength of the tibial plateau of the unicompartmental knee joint can be enhanced, the probability that the tibial plateau is subjected to fatigue fracture under the action of cyclic load of flexion and extension movement of a human body is reduced, and the service life of the product is prolonged.

The invention provides an individualized tibia defect repairing type knee joint prosthesis, and belongs to the technical field of orthopedic implants. The device is formed by assembling a femoral condyle, a femoral bone marrow needle, a plateau pad, a tibia plateau, a restoration body and a tibia bone marrow needle. Wherein the tibia platform and the restoration body are matched through metal-metal threads and are assisted by bone cement to achieve anti-rotation locking, the restoration body adopts a 3D printing individualized bone trabecula structure and is compounded with an HA coating to promote bone ingrowth, the tibia bone marrow needle and the platform are connected through a standard taper connector, inventory and individualization compatibility is achieved, and the bone marrow needle and the platform are connected through a standard taper connector. The defects that an existing prosthesis is large in bone mass loss, unattractive in reconstruction, free of bone ingrowth function, high in processing cost and the like are overcome, and the postoperative function of a tibia defect patient and the long-term stability of the prosthesis can be remarkably improved.

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes a pair of articular surfaces spaced apart by a post. The femoral component includes a pair of femoral condyles spaced apart by a notch in which a cam is located. During flexion, the cam of the femoral component is configured to contact the post of the tibial insert. The dwell point of the medial articular surface of the tibial insert is located, relative to the contact point between the post and tibial insert, to improve stability of the femoral component.

The invention provides a revision type total ankle joint prosthesis system, and belongs to the field of biomedical engineering. Comprising an ankle joint prosthesis body, the ankle joint prosthesis body comprises a tibia assembly, a talus assembly, a connecting embedded part located between the tibia assembly and the talus assembly and a bone fixing nail, the bone fixing nail is located on the outer walls of the sides, away from the embedded part, of the tibia assembly and the talus assembly, and a limiting assembly for preventing looseness and dislocation is arranged in the bone fixing nail; the tibia assembly comprises a tibia plate, a mounting slot is vertically formed in the side, close to the embedded part, of the tibia plate, and an inserting block connected with the mounting slot in a matched mode is arranged on the outer wall of the side, close to the tibia plate, of the embedded part. According to the ankle joint prosthesis, the tibia plate, the talus plate and the bone fixing nails can be independently installed and replaced, the bone fixing nails are connected in a clamped mode and are matched with the limiting assembly and the bevel gear to drive radial expansion, mechanical interlocking of bone tissue is enhanced, loosening is prevented, and the connection stability is ensured through the fastening design of the anti-loosening annular piece and the threads.

The utility model belongs to the field of medical instruments, and provides a tibia osteotomy guide plate which comprises a tibia osteotomy guide part, a tibia first attaching part and a tibia second attaching part, and the tibia osteotomy guide part is provided with a tibia osteotomy groove; the tibia first attaching part is connected with the tibia osteotomy guide part, and the tibia first attaching part is provided with a tibia first attaching face used for being attached to a tibia articular face; the second tibia attaching part is connected with the tibia osteotomy guiding part, the second tibia attaching part is provided with a second tibia attaching face used for being attached to the side face of the near end of the tibia, and the second tibia attaching part is provided with a tibia positioning hole; wherein a tibia side anti-skid structure is formed on the tibia first binding surface and / or the tibia second binding surface. The tibia osteotomy guide plate can be stably and accurately attached to the proximal end of the tibia.

Assemblies, systems, kits, and methods related to the positioning of the distal femoral resection guide anteromedially on an exposed condyle of the distal femur. Assemblies, systems, kits, and methods related to the positioning of the proximal tibial resection guide anteromedially on an exposed proximal tibia.

Device (100) for the kinematic alignment of a tibial cutting block, wherein the device (100) comprises a first correction device (106, 108, 111) and a second correction device (104, 108, 114), wherein the first correction device (106, 108, 111) is designed to correct a flexion angle, wherein the second correction device (104, 108, 114) is designed to correct a tibial cutting height, wherein the first correction device and the second correction device comprise a guide (108) for a rod (104) for aligning the tibial cutting block, wherein the guide (108) is rotatable for correcting the flexion angle, and wherein the rod (104) is linearly movable with respect to the guide (108) for correcting the tibial cutting height. The device comprises an instrument set and a method for setting up the device.

Certain embodiments of the invention provide plates for treating periarticular fractures or other non-full body weight bearing applications that combine polyaxial fixation with a low profile and enhanced contouring that more closely conforms to bone. Such plates can be designed to achieve buttressing effect and / or to be used in a reinforcement mode. Other features can be combined with these. Such plates can be created for use on bone sites such as on a tibia, fibula, metatarsal, calcaneous, other foot bone, humerus, radius, ulna, spinal, maxillofacial, as well as sites on other bones.

The invention pertains to a bone plate (10) designed for tibial Osteotomy, offering enhanced correction capabilities for genu varus deformity of the knee joint. The bone plate comprises an upper portion (12), a middle portion (14), and a lower portion (16), each equipped with a plurality of holes for secure attachment to the tibia at various locations. The middle portion (14) is pivotal in achieving correction at the osteotomy site, utilizing blocks (22) with threaded holes for fixation via locking screws (24) to achieve a valgus overcorrection of 2 to 6 degrees. The bone plate features three locking holes (18) in the upper portion and locking holes (20) with diameters less than 5 mm in the middle portion.