83 results about "Tibial tray" patented technology

The invention provides a knee joint prosthesis tibial plateau capable of enhancing fixation and a tool matched with the tibial plateau, the knee joint prosthesis tibial plateau specifically comprises a tibia support, the tibia support is of a hollow cylinder structure, and three convex bodies are fixedly arranged on the outer surface of the tibia support; a groove penetrating into the tibia support is formed in the abutment, and the abutment is fixedly arranged on the tibia support; the pushing device comprises extension rods arranged at the two ends of a worm, the worm with threads arranged on the outer surfaces of the two ends, turbines arranged on the two sides of the worm, upper supporting bodies arranged at the tops of the turbines and connected with the fixing device through first connecting bodies, and lower supporting bodies arranged at the bottoms of the turbines and connected with the fixing device. The fixing device is a hollow cone, a first spring is arranged in the fixing device, one end of the first spring is connected with the first connector, and the other end of the first spring is connected with a fixing block. According to the technical scheme, the technical problem that after the knee joint prosthesis is implanted into the tibia, the tibial plateau is unstable, the prosthesis is loosened and disengaged, and then bone fusion is affected is effectively solved.

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.

According to one example, a for revision knee arthroplasty is disclosed. According to this example, the method can include shaping a bone of a patient to create one or more recesses therein, selecting a stem provisional, disposing the stem provisional within the one or more recesses, and assembling in vivo the stem provisional with both a first provisional component configured to simulate a shape of one of a tibial tray implant or a femoral implant and a second provisional component configured to simulate a shape of at least one of a sleeve component, a cone component or a keel component of an implant.

A surgical instrument system includes a commonly-sized orthopaedic surgical instrument assembly for use in implanting a femoral component, along with a number of orthopaedic surgical instrument assemblies having varying sizes of instruments of use in implanting a tibial tray component and a patella component.

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.

Knee arthroplasty implants, instruments, systems, and methods of implanting the same. The knee arthroplasty implants may include a femoral implant and a tibial tray implant, each with trabecular surfaces configured to contact bone to provide a scaffold for bone healing and interdigitation. The implants may also include fixation pegs with bulleted profiles to increase the surface area for bone ingrowth. An inserter instrument may include a sliding rack, which is incrementally extended with a rotatable shaft, thereby allowing for quick lock and release of various tibia trays.

An impaction handle for use during a surgical procedure to implant a tibial tray into a surgically-prepared proximal end of a tibia includes an impact plate defining a proximal end of the impaction handle and an impact head defining a distal end of the impaction handle. The impaction handle also has an elongated shaft extending between the impact plate and the impact head, along with a locking mechanism to lock the handle to the tibial tray. The impact plate, the impact head, the elongated shaft, and the locking mechanism of the impaction handle collectively define a single monolithic metallic component.

The application provides a knee joint prosthesis tibial plateau capable of enhancing fixation and a matching tool, and specifically comprises: a tibial tray, which is a hollow cylindrical structure and is externally provided with three convex bodies; a base, which is provided with a groove penetrating into the tibial tray and is fixed on the tibial tray; a pushing device, which comprises: an extension rod arranged at both ends of a worm, a worm with threads arranged on the outer surface of both ends, a turbine arranged at both sides of the worm, an upper support body arranged on the top of the turbine and connected with a fixing device through a first connecting body, and a lower support body arranged at the bottom of the turbine and connected with the fixing device; and the fixing device is a hollow cone, which is internally provided with a first spring, one end of the first spring is connected with the first connecting body, and the other end is connected with a fixing block. The technical scheme of the application effectively solves the technical problem that after the knee joint prosthesis is implanted into the tibia, the tibial plateau is not stable, the prosthesis is loose and comes off, and bone fusion is affected.

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.

The utility model provides a marking support block for auxiliary marking of a forge piece tibia support, and belongs to the technical field of metal forging machine manufacturing. Comprising a marking supporting block body, the upper surface of the marking supporting block body is provided with a multi-plane type cavity, the multi-plane type cavity is composed of a plurality of cavity planes matched with forgings of different specifications, and the multiple cavity planes form a step-shaped structure from bottom to top and from small to large. The multi-plane type cavity is matched with forgings of different specifications, the universality is good, rapid positioning and ejection are achieved by combining the lower bottom face groove cavity, the problems that in traditional marking, positioning is not accurate, and efficiency is low are solved, the structure is simple, operation is convenient and fast, and marking precision and efficiency are remarkably improved.

An orthopaedic surgical instrument for use during a surgical procedure to implant a tibial tray into a surgically-prepared proximal end of a tibia and a femoral component into a surgically-prepared distal end of a femur is disclosed. The surgical instrument includes a metallic impaction handle and a removable polymeric impaction insert.

This application relates to the technical field of medical devices, and particularly to an artificial knee joint prosthesis. An artificial knee joint prosthesis includes: a tibial tray; a liner mounted on the tibial tray; a femoral condyle prosthesis, which includes a femoral condyle metal component and a femoral condyle ceramic component. The femoral condyle ceramic component covers the outer wall of the femoral condyle metal component. The femoral condyle ceramic component is in sliding fit with the liner. The inner wall of the femoral condyle metal component is a 3D printed trabecular bone structure, which can achieve biological fixation and bone ingrowth. This application has the effect of reducing the friction between the liner and the femoral condyle prosthesis, reducing the particles generated by polyethylene wear, thereby reducing the occurrence of inflammation in patients, avoiding bone cement reactions, and reducing the occurrence of postoperative pain and joint instability in patients.

The present invention relates to the field of medical device technology, and in particular to a modification component for a tibial plateau osteotomy surface. The modification component includes a drilling drill, a positioning guide, and an osteotome. The contour of the osteotomy surface limit plate of the positioning guide matches the tibial plateau osteotomy surface, the inner side of the bone side limit plate of the positioning guide fits one of the side surfaces of the tibia, the positioning guide is used to achieve positioning in at least two directions of the tibia, the drilling is achieved through the cooperation of the drilling drill and the positioning guide, and the cutting of long holes is achieved through the cooperation of the osteotome and the positioning guide. During the entire modification process, the positioning guide only needs to be installed once until the modification of the tibial plateau osteotomy surface is completed. During the entire modification process, the modification reference is fixed to make the positioning more accurate, and the operation is simple and convenient, which can assist in achieving accurate positioning and installation of the tibial support prosthesis.

The present invention discloses a knee joint prosthesis clamping device, comprising: a shell, which has a first accommodating cavity inside, and a first hole is respectively provided at the front and rear ends; an extension portion extending distally from the shell, and the distal end of which forms a stopper downward; a push rod arranged behind the stopper and passing through the first hole, a pad block is provided at the distal end of the push rod, and a ratchet arranged along the axial direction of the push rod is provided on the push rod; a non-return pawl arranged in the first accommodating cavity and fixed in position, and a push block sleeved on the push rod and movable forward and backward, the push block has an active pawl, and the ratchet is respectively engaged with the active pawl and the non-return pawl; a grip and a trigger arranged below the shell, and the upper end of the trigger is engaged with the push block; and a locking component, which is configured to limit the rotation of the push rod and release the restriction on the rotation of the push rod. The pistol-type design is convenient for doctors to operate; the trigger lever-type structure allows surgeons to push the tibial pad into the tibial tray with little effort; an intermittent pushing mechanism is adopted, which is convenient for doctors to stop at any time to observe the clamping state.

The utility model discloses a tibia tray plugging device capable of being adjusted front and back, which comprises a base, the base comprises a base main body, a positioning groove is arranged at the bottom of the base main body, a mounting hole is arranged at the top of the base main body, a quick connector is arranged at the mounting hole of the base main body, a guide groove which is through up and down is arranged on the base main body, and the guide groove is communicated with the positioning groove. A reverse buckle is installed at the position, located in the guide groove, of the base body, an adjusting rod connected with the reverse buckle is installed on the base body, and a spring is sleeved on the adjusting rod. According to the utility model, the joint is centered, so that the stress is more uniform, and the possibility of crushing sclerotin is reduced; the transverse adjusting rod is changed into the adjusting rod, the spring is compressed by pressing the adjusting rod to drive the L-shaped inverted buckle to move backwards, the allowance of the clamping groove of the tibia support is reserved, the adjusting rod is loosened, the L-shaped inverted buckle returns to the original position under the action of the spring and is in interference fit with the clamping groove of the tibia support, pressure is applied to the direction of the clamping groove, and the locking effect is achieved.

According to the powder printed thighbone cushion block and the thighbone condyle prosthesis, the tubular reinforcing part is creatively introduced into the thighbone cushion block, and the problem that the inherent mechanical property of a 3D printed porous structure is poor is solved; the porous structures of the reinforcing part and the peripheral part are formed into an integrated structure through a 3D printing technology, the reinforcing part mainly bears force, and the overall mechanical performance is improved; in addition, the reinforcing part further serves as a limiting assembly of the bone cement, the action range of the bone cement between the cushion block and the tibia support is limited, and damage to the medullary cavity wall in the bone cement pumping stage is avoided.

To provide knee arthroplasty trials, systems, and related methods.SOLUTION: A knee arthroplasty trial system may include an expandable tibial tray trial having top and bottom plates, an actuation screw retained in the bottom plate, and an expansion ramp configured to slide along the bottom plate and lift the top plate as the ramp translates forward. The actuation screw may define a helical cut with step portions, and the expansion ramp may include a pin configured to engage the helical cut of the actuation screw. When the actuation screw is rotated, the pin rides along the helical cut and is configured to rest within one of the step portions, thereby ensuring that the expandable tibial tray trial expands only to discrete thicknesses.SELECTED DRAWING: Figure 1

An orthopaedic surgical instrument for use during a surgical procedure to implant a tibial tray into a surgically-prepared proximal end of a tibia and a femoral component into a surgically-prepared distal end of a femur is disclosed. The surgical instrument includes a metallic impaction handle and a removable polymeric impaction insert.

This invention provides a high-strength tibial support with osteoinductive properties and its preparation method. The preparation method involves preparing a reinforcing material and a matrix material; fabricating a multi-porous metal tibial support skeleton from a biodegradable metal material; placing the prepared multi-porous metal tibial support skeleton and the matrix material into a mold cavity; uniformly filling the pores of the multi-porous metal tibial support skeleton with the matrix material; and then pressing and molding the skeleton through the mold cavity. After pressing and molding, a semi-finished tibial support is obtained, which is then subjected to high-temperature sintering to obtain a high-strength tibial support with osteoinductive properties. This invention solves the technical problems of existing tibial support fixation methods using bone cement and bio-type fixation, which lead to bone cement particles easily entering the pulmonary circulation through the bloodstream and poor adhesion between the bio-coating and the prosthesis, resulting in coating detachment during embedding. This invention can be widely applied to the preparation of high-strength tibial supports with osteoinductive properties.

The invention relates to the technical field of medical instruments, in particular to a 3D (three-dimensional) biological knee joint and a preparation method thereof.The 3D biological knee joint comprises a femoral condyle component, a tibia support component, a meniscus component and a patella component; according to the method, individualized knee joint data of a patient is obtained through CT / MRI scanning, reverse modeling is conducted in combination with Mimics software, a precisely-matched prosthesis three-dimensional model is generated, and the success rate is increased; based on specific anatomical features of a patient, adaptability errors of a traditional standardized prosthesis are avoided, operative wounds are reduced, and the initial stability of the prosthesis and a bone interface is improved. According to the invention, through the combination of technological processes such as individualized modeling, gradient functional coating, multi-process printing and post-treatment, the defects of a traditional knee joint prosthesis are overcome, and the properties such as remarkably improved biocompatibility, excellent antibacterial property, optimized mechanical matching property and accurate individualized adaptation are improved.

Aiming at the problems of low quality, high defect detection omission ratio and low production efficiency in the existing tibia tray production, the invention discloses a light-weight medical tibia tray surface defect detection method, system, equipment and medium based on YOLOv11, and relates to the technical field of surface defect detection.The method comprises the steps that a tibia tray picture is shot, and a data set is constructed; training a YOLOv11 network by using the data set; the trained YOLOv11 network is evaluated through K fold cross validation, and the optimal YOLOv11 network is obtained; and shooting a tibia tray picture to be detected, and inputting the tibia tray picture into the optimal YOLOv11 network for defect identification to obtain position and category information of a defect area. According to the method, the surface quality of the tibia support is automatically detected, appearance flaws can be accurately recognized and marked, and visual guidance is provided for subsequent polishing rework.

The invention relates to a tibial tray (20) having a proximal surface (P) comprising at least two, in particular exactly two, central fixation elements (1) for effecting a connection to a tibial insert (30) as another part of an artificial knee joint, the at least two central fixing elements (1) are projections projecting from the proximal surface (P) in the proximal direction, and the at least two central fixing elements (1) are positioned symmetrically and / or parallel to a median plane (M) of the proximal surface (P), the median plane (M) is perpendicular to the proximal surface (P) and intersects the proximal surface (P) in the middle between the two outermost points (L1, L2) of the proximal surface (P). The invention also relates to a tibial insert (30) and an artificial knee joint.

The utility model belongs to the technical field of medical instruments, and discloses a gasket oblique locking type artificial knee joint tibia prosthesis which comprises a tibia support and a gasket, the tibia support is provided with a concave structure, the gasket is arranged towards the concave structure and movably connected with the tibia support, and the tibia support is provided with two positioning strips, a plurality of front fixing blocking pieces and a plurality of rear fixing blocking pieces. The positioning strips are gradually raised in the imbedding direction of the gasket, two limiting grooves are symmetrically distributed in the two sides of each positioning strip, the front fixing blocking piece and the rear fixing blocking piece are arranged on the extension lines of the two positioning strips and provided with slopes which are concave inwards from top to bottom, and the gasket is provided with a plurality of front fixing notches, rear fixing notches and positioning grooves. The front fixing notch and the rear fixing notch are each provided with a slope protruding outwards from top to bottom, and a limiting strip is arranged in the positioning groove. The problems that when the gasket is placed in the tibia support, the gasket is limited by the size of the joint space, installation is difficult, meanwhile, the sight line of an operator is blocked, and the gasket and the tibia support are difficult to coincide are solved.

The invention discloses an additive-manufactured biological tibia tray prosthesis and a manufacturing method thereof, and relates to the technical field of artificial knee joint prostheses. The biological type tibia support prosthesis comprises four types: a biological type symmetrical tibia support, a biological type symmetrical stemless tibia support, a biological type anatomical tibia support and a biological type anatomical stemless tibia support. The prosthesis mainly comprises a support body, a porous structure, a plug pin and the like, and is integrally formed through an additive manufacturing technology, so that the precision and the strength are ensured. The porous structure is designed to be in an irregular space three-dimensional grid shape, the thickness ranges from 0.6 mm to 1.6 mm, and the porous structure is used for promoting bone trabecula ingrowth and achieving biological fixation. The positioning nail adopts a bullet-shaped design and is provided with an exhaust groove and a notch, so that the installation is simplified and the stability is enhanced. The manufacturing method comprises the steps of design modeling, stress optimization, additive manufacturing and aftertreatment, and the prosthesis is made of a titanium alloy material and meets related international standards. The invention has the advantages of simple installation, reliable fixation, good bone ingrowth effect and the like.

The application belongs to the technical field of medical devices, and provides a single-knee prosthesis tibial tray and a mounting method, which comprises a prosthesis tibial tray body, a support wing and a support column are arranged on the prosthesis tibial tray body; the support wing is connected with the side wall of the prosthesis tibial tray body, and the support wing is embedded into the non-cutting side of the tibia; the support column is connected with the lower end of the prosthesis tibial tray body, and the support column is embedded into the tibia below the tibial bone cutting surface. The above scheme sets the support wing and the support column on the prosthesis tibial tray body, supports and fixes the prosthesis from two different positions and different directions of the side wall and the lower end, respectively, disperses and transmits the load borne by the prosthesis to the larger bone area of the tibia, effectively increases the stress area, avoids the load concentration in the local area of the tibial cutting surface, and reduces the fracture risk of the tibial cutting surface.

The utility model relates to the field of knee joint prostheses, in particular to a knee joint prosthesis with a reinforcing structure, which comprises a tibia support, a prosthesis body and a first fixing rod, a second fixing rod is arranged at the bottom of the tibia support, a mounting seat is embedded in the middle of the prosthesis body, and the bottom of the first fixing rod is fixedly connected with the top of the mounting seat. The tibia support and the prosthesis body are in implantation connection with knee joint bones of a patient through a second fixing rod and a first fixing rod respectively, the tibia support and the prosthesis body are rotationally connected through a first connecting piece and a second connecting piece, and a rubber column is fixedly installed at the bottom of the cylinder, installed in the sleeve in a clamped mode and capable of moving up and down in the sleeve. The knee joint of a patient can be bent conveniently, flexibility is higher, the tibia support and the prosthesis body are tightly connected and attached to each other through the first connecting piece and the second connecting piece, and loosening and falling are prevented.

There is provided a tibial component comprising: a tibial tray with an inferior side; and a support member connected to the inferior side of the tibial tray, the support member having a stem portion, the support member further comprising at least one opening. In one embodiment, the at least one opening is constructed and arranged to receive a sawblade or an osteotome. In another embodiment, the at least one opening is comprised of solid material but is radio-lucent. In yet another embodiment, the at least one opening is comprised of solid material and is frangible.

A tibial prosthesis system for knee arthroscopy may include a tibial tray having an anterior portion, a posterior portion, a bone facing surface, a joint facing surface, and a central aperture. The tibial prosthesis system may also include a clip configured to be slidably received in the central aperture. The posterior portion may include a posterior notch. The central aperture may extend posteriorly from the anterior portion, and from the bone facing surface to the joint facing surface. At least a portion of the joint facing surface may extend between the central aperture and the posterior notch.

The application discloses a tibial tray prosthesis, which comprises a tray body and a connecting piece, the tray body has a proximal bone side of a connected end face facing a tibia and a distal bone side of a connected end face facing away from the tibia, the connecting piece is arranged in the tray body along the direction from the distal bone side to the proximal bone side, the connecting piece has an arc-shaped part, the center line of the longitudinal section of the arc-shaped part is arc-shaped, and the arc-shaped part is used for moving from the distal bone side to the proximal bone side of the tray body so that the arc-shaped part is inserted into the tibia. By adopting the scheme, tibial cortical damage caused by slotting on the front side of the tibia can be avoided, and the operation is simplified. The arc-shaped part can move along the arc-shaped center line, which is beneficial to the insertion process of the arc-shaped part. The arc-shaped part can improve the stability of the prosthesis in the vertical direction and the front-back direction.

The present invention relates to a pad for repairing bone defects in total knee revision surgery, belonging to the technical field of orthopedic medical devices, and comprising a main body, wherein the main body is a porous structure, and the porosity of the main body along the length direction of the tibia increases gradually from the tibial tray to the bone bed, and the porosity of the main body along the radial direction of the tibia increases gradually from the cortical bone to the medullary cavity. The present invention arranges the main body in the bone defect area between the tibial tray and the tibial bone bed, so that the main body fills the bone defect and supports the tibial tray, and then utilizes the porosity of the main body to increase gradually from the tibial tray to the bone bed and from the cortical bone to the medullary cavity, so that the porosity of the pad changes in a bidirectional gradient, and the bidirectional gradient porosity realizes a porous structure with adaptive elastic modulus, so that the elastic modulus of different areas where the pad contacts the bone bed are matched, which satisfies the support for the prosthesis while effectively alleviating the stress shielding effect.