376 results about "Intervertebral fusion" patented technology

The invention belongs to the technical field of medical implant prostheses, and particularly relates to a self-stability cervical interbody fusion cage which comprises a fixing plate and a fusion cage body. An adjusting rod is mounted in the fusion cage main body, a mounting groove is formed in the fusion cage main body, the adjusting rod and a sliding block are mounted in the mounting groove, a check block is mounted on the adjusting rod, and the check block drives the sliding block to move; an adjusting groove is formed in the fusion cage body, a connecting plate and a protruding tooth rod are installed in the adjusting groove, a contact plate is installed on the connecting plate, and a top block and a sliding block are connected through a pull rope; when the interbody fusion cage is implanted, the protruding toothed rod retracts, the surface of the protruding toothed rod is kept flat and smooth, implantation of the interbody fusion cage is facilitated, extrusion, friction and scratching are avoided, then after implantation, the protruding toothed rod stretches out, friction force between the interbody fusion cage and the vertebral body end plate is increased, and it is guaranteed that the fixing effect and stability of the interbody fusion cage are good; the treatment effect is improved.

The invention discloses a spine minimally invasive intervertebral fusion cage and a rigid fixing device thereof, and belongs to the technical field of medical implantation instruments.The spine minimally invasive intervertebral fusion cage comprises a fusion cage body implanted between an upper lumbar vertebra body and a lower lumbar vertebra body, and the two sides of the center of the fusion cage body are each provided with a height adjusting assembly in a sliding mode; jacking springs are installed between the two height adjusting assemblies and the bottom cover plate, and spring pins used for fixing and releasing the height adjusting assemblies are inserted between the fusion cage body and the two height adjusting assemblies. And an upper top plate is fixedly mounted at the tops of the two height adjusting assemblies. By designing the fusion cage capable of automatically adjusting the height, when the fusion cage is used, the lifting seat and the upper top plate can be driven to abut against the lumbar vertebra body above by utilizing the bounce of the jacking spring, and after the fusion cage is adjusted in place, the lifting seat and the upper top plate can abut against the corresponding clamping teeth through the outer flanging sides of the two spring steel sheets, so that the supporting height of the lifting seat is fixed.

The invention provides an interbody fusion prosthesis and an interbody fusion prosthesis component, the interbody fusion prosthesis comprises an interbody fusion main body, the interbody fusion main body is provided with a bone grafting cavity, and the bone grafting cavity penetrates through the surface of the interbody fusion main body to form a first opening in the interbody fusion main body; and the first end plate is movably arranged at the first opening, and the first end plate is provided with a first avoiding position for avoiding the first opening and a first shielding position for covering the first opening. According to the technical scheme, the problem that in the related technology, the bone filling material in the bone grafting cavity has the falling risk is effectively solved.

The invention relates to an interbody fusion device. The device comprises a supporting assembly, a driving piece and two sets of opening mechanisms. The supporting assembly comprises two supporting pieces arranged in the intervertebral height direction at intervals, and each supporting piece is provided with a first supporting end and a second supporting end. The driving piece is arranged between the two supporting pieces; the distraction mechanism comprises two distraction assemblies in transmission connection with the driving part, the two ends of the two distraction assemblies are rotationally connected with the two first supporting ends correspondingly, and the two ends of the other two distraction assemblies are rotationally connected with the two second supporting ends correspondingly; when the driving piece is operated, the distraction assemblies are distraction in the intervertebral height direction. The two groups of distraction assemblies connected with the first supporting end and the corresponding part of the transmission piece form a triangular structure, the two groups of distraction assemblies connected with the second supporting end and the corresponding part of the transmission piece form a triangular structure, and the two ends of the two supporting pieces are supported. And the two ends of the two supporting pieces can be stably supported.

A device for performing intervertebral body fusion between at a vertebral joint, and associated systems and methods for manufacturing the device are disclosed herein. In some embodiments, the device includes an expandable main body configured to be locked in a desired configuration between a superior and an inferior vertebrae at the vertebral joint to facilitate the intervertebral body fusion at the vertebral joint. A first endplate is connected to the main body. The first endplate can include a superior surface having one or more patient-specific features configured to engage and mate with an inferior surface of the superior vertebra. A second endplate is connected to the main body. The second endplate can include an inferior surface having one or more patient-specific features configured to engage and mate with a superior surface of the inferior vertebra.

The embodiments provide various interbody fusion spacers, or cages, for insertion between adjacent vertebrae. The cages may have integrated ratchet assemblies that allow the cage to change size and angle as needed, with little effort. The cages may have a first, insertion configuration characterized by a reduced size to facilitate insertion through a narrow access passage and into the intervertebral space. The cages may be inserted in a first, reduced size and then expanded to a second, larger size once implanted. In their second configuration, the cages are able to maintain the proper disc height and stabilize the spine by restoring sagittal balance and alignment. Additionally, the intervertebral cages are configured to be able to adjust the angle of lordosis, and can accommodate larger lordotic angles in their second, expanded configuration. Further, these cages may promote fusion to further enhance spine stability by immobilizing the adjacent vertebral bodies.

Expandable fusion devices, systems, instruments, and methods thereof. The expandable fusion implant may include an upper endplate assembly and a lower endplate assembly. The upper and lower endplate assemblies may be configured to expand in width. A rotatable actuator may move one or more driving ramps, which mate with an upper ramp and a lower ramp, respectively. The actuator may cause independent movement of one or more of the driving ramps, thereby causing an expansion in height of the upper and lower endplate assemblies.

Expandable fusion devices, systems, instruments, and methods thereof. The expandable fusion device is capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The fusion device may include a body, a first endplate, and a second endplate. A drive screw may be rotated to move the first and second endplates outwardly and into an expanded configuration. Instruments may be provided to ensure the implant is inserted safely and as intended.

An interbody spinal implant / fusion cage and implant inserter system for facilitating interbody fusion in the lumbar spine using bone graft while reducing the number of passes made through the patient's disc space and the sensitive surrounding tissue by integrating bone graft delivery into the inserter system. The system combines insertion of the interbody implant with bone graft delivery directly into the disc space. The system includes the interbody implant, an interbody cover plate, an implant inserter assembly, a cover plate inserter, a bone graft plunger and a bone graft funnel. The inserter assembly includes a large rectangular cannula which attaches to a large rectangular posterior opening in the interbody implant instead of a round cannula. The rectangular cannula approximates the shape of the annulotomy and provides a larger cross-sectional area for passage of a much larger quantity of bone graft material without jamming. Related methods and kits are also disclosed.

The invention provides a deep learning-based spine interbody fusion detection method, apparatus and device, and a computer readable storage medium. The method comprises the following steps: acquiring spine medical image data; preprocessing the medical image data to generate standardized input image data; inputting the preprocessed input image data into a pre-trained deep learning model, and analyzing local and global structural features of a vertebral body and an intervertebral space by the deep learning model through multi-layer convolution, pooling and activation function operation; based on an output result of the deep learning model, classifying fusion states of the vertebral body and the intervertebral space, and identifying whether fusion occurs or not; scoring the fusion degree of different intervertebral spaces to generate a fusion evaluation report; and visually displaying the detection result. According to the embodiment of the invention, spine interbody fusion detection can be more accurately carried out.

The invention provides an interbody fusion cage which comprises an installation main body, a first prosthesis frame and a second prosthesis frame, the first prosthesis frame is located above the second prosthesis frame, the first prosthesis frame and the second prosthesis frame are each provided with a vertebral body connecting part, and the installation main body is located above the first prosthesis frame and the second prosthesis frame; the bottom end of the first prosthesis frame and the top end of the second prosthesis frame are in limiting fit in the horizontal direction; the adjusting device comprises a fixing frame and an elastic adjusting mechanism, the bottom end of the fixing frame is arranged on the second prosthesis frame, the elastic adjusting mechanism is movably arranged on the fixing frame, the first prosthesis frame is provided with an abutting part, and the abutting part abuts against the top end of the elastic adjusting mechanism. By means of the technical scheme, the problems that in the using process of a fusion cage in the prior art, the upper and lower installation heights of the interbody fusion cage cannot be adaptively adjusted, spines located at the upper end and the lower end of the fusion cage are pressed, the surface of the fusion cage is prone to being abraded, and the fusion cage is damaged can be solved. And bony fusion between the upper vertebral body and the lower vertebral body is affected.

The invention provides a novel TPMS porous structure interbody fusion cage, and relates to the technical field of medical materials. The interbody fusion cage is designed by using a porous frame structure with different unit cell sizes and porosities, so that the biocompatibility of the interbody fusion cage is enhanced, the interbody fusion cage has higher mechanical properties, large static compression load and low elastic modulus, the elastic modulus is closer to that of human cortical bones, the stability of an implant in the early stage of osseointegration is improved, and the interbody fusion cage is suitable for being used in the field of osteosynthesis. Under the same porosity, the elastic modulus is lower, and the comprehensive performance is excellent.

A kit of parts from which selection is made to form an intervertebral fusion device. The kit of parts comprises a plurality of different endplates and a core component. Each of the plurality of different endplates is configured to be received in an intervertebral space defined between first and second vertebrae. The core component is configured to engage with each of the plurality of endplates and a selected one of the plurality of endplates when the selected endplate and the core component are received in the intervertebral space. Each of the plurality of endplates defines a bone graft aperture which is open at top and bottom surfaces of the endplate and extends between the top and bottom surfaces, the thus defined bone graft apertures being of substantially the same dimensions as one another when the plurality of endplates are in plan view. The core component defines a bone graft material holding space having a holding space opening in one of a core component top surface and a core component bottom surface of the core component. The holding space opening is of substantially the same dimensions as each of the bone graft apertures when the core component is in plan view. The holding space opening is substantially coextensive with the bone graft aperture of the selected endplate in plan view and when the core component is engaged with and in registration with the selected endplate.

The invention belongs to the field of interbody fusion cages in medical instruments, and particularly discloses an expansion type interbody fusion cage applied to minimally invasive spine surgery, which comprises a front-end extrusion block, an internal thread column is connected to the rear part of the front-end extrusion block, and the upper and lower surfaces of the front-end extrusion block are in contact with the inner sides of the front ends of an upper support plate and a lower support plate respectively; upper side edge plates are hinged to the two sides of the upper supporting plate, lower side edge plates are hinged to the two sides of the lower supporting plate, a limiting block is installed on the lower supporting plate, a connecting sliding block is installed below the upper supporting plate, and rear end extrusion blocks which are the same as the front end extrusion blocks in shape and symmetrical in position are installed on the inner sides of the rear ends of the upper supporting plate and the lower supporting plate. An adjusting hole is formed in the center of the rear end extrusion block, a hexagon socket screw is installed in the adjusting hole, a sliding hole is formed in the upper supporting plate, and an oblique nail is installed in the sliding hole. The contact area between the fusion cage and the intervertebral space can be increased, the stability of the fusion cage is improved, and the purposes of recovering the intervertebral space height and expanding the intervertebral foramen are achieved.

An expandable fusion device is capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The fusion device may include a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

An implant having an upper support body and a lower support body that are coupled together by use of pinions integral to the upper support body and apertures integral to the lower support body. A dual directional driver is rotatably coupled to a forward spacer and a rear spacer, wherein the implant forms a compact arrangement for ease of insertion allowing a posterior surgical approach for placement of the spinal implant for interbody fusion allowing the implant to be inserted through a small incision and rotation of the dual directional driver will cause movement of the upper support body an equal distance from the lower support body to increase the implant in size in situ.

The invention relates to a preparation method and medical application of a porous tantalum material based on an extremely small curved surface structure. The porous tantalum material is particularly applied to medical implants such as an interbody fusion cage, an artificial vertebral body, a hip joint acetabular cup, a joint filling block and a dental implant. The material is pure tantalum or tantalum-containing alloy (such as tantalum-titanium, tantalum-niobium, tantalum-zirconium, tantalum-titanium-niobium-zirconium, and the tantalum content is greater than 1%), the material is constructed by adopting an additive manufacturing technology, the porosity is 30-90%, compared with a truss pore channel structure (such as a rhombic dodecahedron), no obvious stress concentration point exists, the strength, the modulus, the anti-fatigue performance and the like are remarkably improved, and the application prospect is wide. The method is particularly suitable for structural and functional reconstruction of large-area and load-bearing bone defects.

The invention discloses an angle-adjustable or deployable multi-stage anchoring insertion sheet system, and relates to the technical field of medical instruments, the angle-adjustable or deployable multi-stage anchoring insertion sheet system comprises a hollow box body, and the upper surface and the lower surface of the box body are each provided with at least one insertion sheet outlet; the at least one group of inserting piece driving mechanism is arranged in the box body and is used for generating linear driving force; the at least two insertion sheet assemblies are accommodated in the box body in an initial state, and each insertion sheet assembly is in driving connection with the insertion sheet driving mechanism; according to the intervertebral fusion cage, the secondary anchoring part capable of moving relative to the basic anchoring part is arranged, so that the anchoring angle or the opening degree of the fusion cage can be adjusted according to a vertebral form operation of a patient after the fusion cage is implanted, the adaptability to different anatomic forms is improved, and a more flexible anchoring scheme is provided for an intervertebral fusion operation.

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.

The invention relates to a percutaneous implantation elastic modulus intervertebral dilator and an operation kit, and belongs to the technical field of spine surgery implants. In order to solve the problems that an existing intervertebral dilator causes a large wound to a patient and the distraction angle cannot be adjusted, the intervertebral dilator is provided with a dilator body, an angle auxiliary adjusting mechanism, an auxiliary suite and an angle feedback mechanism, the dilator body is used for being placed in the intervertebral space of the patient, and the angle auxiliary adjusting mechanism is arranged in the dilator body; the auxiliary suite comprises a first installation tool and a second installation tool, the first installation tool is arranged at the rear end of the spreader body and connected with the angle auxiliary adjusting mechanism, after the spreader body is placed, the first installation tool is taken down, and the spreader body is locked and fixed through the second installation tool; the angle feedback mechanism is arranged on the spreader body and extends to be connected with the first mounting tool, and an operator observes the spreading angle through the angle feedback mechanism. The operation steps are greatly reduced, and the operation efficiency and the intervertebral fusion effect can be improved.

Provided herein are an anchor and interbody for interbody fusion, including an interbody for insertion between human vertebrae, including an interbody cage including a plurality of anchor receptacles, each anchor receptacle configured to receive an anchor to secure the interbody to a vertebra; and the anchor, including a head configured to engage an anchor receptacle; a curved partial-tubular shank with a convex curve, connected to or integral with the head at a distal end of the head, and extending from the head; a tapered tip portion extending from a distal end of the curved partial-tubular shank; one or more rails integral with or connected to an outside surface of the anchor, extending from a proximal end of head and along the curved partial-tubular shank to a proximal end of the tapered tip portion; and a feature formed from two flat surfaces on an outside of the anchor and a rail.

A multi-portal method for treating a subject's spine includes using a marking guide to align spinal incisions. The marking guide can include alignment features, such as radiopaque structures or elements that align with features such as anatomical elements, planes, implants, and / or the like. The marking guide can fit multiple access instruments, such as expandable scalpels, depth guides, surgical instruments, and / or the like. A user can position the access instrument relative to a feature using an alignment feature of the marking guide. The access instruments can be used to create incision sites and prepare entrances for multiple cannulas, cannulas and surgical instruments, multiple surgical instruments, and / or the like. One or more access instruments can be used to enlarge a working space between the entrances for delivery of an interbody fusion implant. The patient's spine can be visualized using endoscopic techniques to view the working space throughout the surgical procedure.

This invention relates to an intervertebral fusion cage for insertion between vertebrae. The cage has a body defining a first, anterior portion, a second, posterior portion and a central portion extending between the anterior and posterior portions. The central portion may define a first surface which is, in use, a top surface and a second surface which is, in use, a bottom surface. The top and bottom surfaces may carry gripping formation for gripping end plates of the vertebrae. The gripping formations on the top and bottom surfaces preferably face substantially opposite directions such that the gripping formations on the top surface obstruct movement in first direction while the gripping formations on the bottom surface obstruct movement in a second direction, which is substantially opposite the first direction.

Expandable intervertebral fusion implants, system, and methods. The expandable intervertebral implant is capable of being installed inside an intervertebral disc space to maintain disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The implant may include a central drive assembly configured to control left and right side assemblies. The expandable intervertebral implant may be configured to transition from a collapsed configuration having a first width and a first height to an expanded configuration having a second width and a second height.

The utility model belongs to the technical field of medical instruments, and particularly relates to a 3D printing expandable interbody fusion cage which comprises a fusion cage body, and the fusion cage body comprises a screw, a fixing pin, a transverse pin, a frame body, an upper base plate, a lower base plate and a supporting sliding block arranged between the upper base plate and the lower base plate. The distractable interbody fusion cage and intervertebral contact parts are manufactured by using a 3D printing technology, and three-dimensional porous structures similar to cancellous bone structures are designed on the surfaces of the upper base plate and the lower base plate, so that the fusion rate of the interbody fusion cage and the spine of a human body can be increased; meanwhile, the interbody fusion cage is simple in structure and convenient to operate, is implanted into the interbody space of the human body in a contracted state, is expanded in situ, can increase the contact area with an end plate and the bone chip filling space, can recover the forward convex curvature, has high biomechanical stability, is suitable for various lumbar degenerative diseases needing interbody fusion, and can be widely applied to the field of lumbar interbody fusion. The clinical treatment effect can be effectively improved.

The invention provides an angle-adjustable interbody fusion cage and an operation assembly thereof. The angle-adjustable interbody fusion cage comprises an upper supporting plate, a lower supporting plate, a shell and an adjusting mechanism. The upper supporting plate and the lower supporting plate are located on the upper surface and the lower surface of the shell respectively. The head ends of the upper supporting plate and the lower supporting plate are connected with the head end of the shell through a first movable part, and the tail ends of the upper supporting plate and the lower supporting plate are connected with the tail end of the shell through a second movable part. The first movable part is driven by the adjusting mechanism to drive the head end of the upper supporting plate and the head end of the lower supporting plate to be opened and / or closed through displacement. The second movable part is driven by the adjusting mechanism to drive the tail end of the upper supporting plate and the tail end of the lower supporting plate to be opened and / or closed through displacement. The interbody fusion cage is exquisite in structure and adjustable in angle, independent control over opening and closing of the upper supporting plate and the lower supporting plate can be achieved, different interbody anatomical structures of a patient are met, and convenience is provided for medical staff in the real-time operation process.

An intervertebral fusion device comprises an endplate, a core component and at least one ratchet. Each of the endplate and the core component has a leading end and a trailing end and is configured to be received in an intervertebral space defined between first and second vertebrae. The ratchet comprises a pawl and a linear rack defining plural recesses. The pawl is comprised in the core component or the endplate and the linear rack is comprised in the other of the core component and the endplate. The core component and the endplate are configured to engage with each other by disposing the leading end of the core component adjacent the trailing end of the endplate and then moving the core component relative to the endplate in a direction of insertion such that the leading end of the core component moves towards the leading end of the endplate and extent of overlap of the core component and the endplate increases. The plural recesses of the linear rack extend in the direction of insertion and from near or at one of the leading end and the trailing end of the other of the core component and the endplate towards the other of the leading end and the trailing end of the other of the core component and the endplate. The plural recesses extends by no more than 60% of a distance between the leading end and the trailing end. The ratchet is configured such that the pawl starts to inter-engage with the plural recesses of the linear rack as the core component is moved further relative to the endplate in the direction of insertion and such that the pawl progresses along the plural recesses with further movement of the core component until the core component and the endplate have a desired extent of overlap.

Expandable fusion devices, systems, instruments, and methods thereof. The expandable fusion device is capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The fusion device may include a body, a first endplate, and a second endplate. A drive screw may be rotated to move the first and second endplates outwardly and into an expanded configuration. Instruments may be provided to ensure the implant is inserted safely and as intended.

The invention provides a bionic 3D printing degradable magnesium alloy interbody fusion cage and a preparation method thereof, the bionic 3D printing degradable magnesium alloy interbody fusion cage comprises a porous frame and a through hole net rack, the porous frame is constructed by supporting rods with the diameter of about 0.4 mm, the porous frame is of a compact rhombic hole structure, the aperture is about 200-400 microns, the pore coverage rate is about 50%-80%, and a horseshoe-shaped columnar space is defined; the through-hole net rack is formed by building supporting rods with the diameter of 0.2-0.1 mm, the hole diameter is about 300-800 microns, the hole coverage rate is about 90%, a dome structure is formed in the center, and the through-hole net rack is arranged in the middle of the porous frame. The magnesium-strontium alloy is adopted as a base material of the interbody fusion cage, the interbody fusion cage is integrally formed through the 3D printing technology, and the degradable characteristic and good biocompatibility of the magnesium alloy are fully utilized. The elasticity modulus of the magnesium alloy is closer to that of the human bone tissue, physiological loads can be better shared and transmitted, the stress shielding effect is reduced, and growth and fusion of the bone tissue are promoted.

The invention discloses a spine minimally invasive intervertebral fusion cage and a non-rigid fixing device thereof, and belongs to the technical field of spine surgery medical instruments.The spine minimally invasive intervertebral fusion cage comprises a fusion cage mechanism located between two adjacent spine vertebral bodies, and a connecting mechanism is arranged in the middle of the interior of the fusion cage mechanism; the top and the bottom of the interior of the fusion cage mechanism are jointly provided with a supporting mechanism. The same ends of the left support frame and the right support frame are respectively provided with two groups of fixing mechanisms, so that the stability of fixed connection between the single left support frame or the single right support frame and the spine centrum is ensured, and the left support frame and the right support frame are connected into an integral support ring body by the connecting mechanisms; the stability of connection between the supporting ring body and the spine vertebral bodies can be further improved through the four sets of fixing mechanisms, a non-rigid mechanism is further installed on one side of one end of each spine vertebral body through a connecting screw hole, and two adjacent sets of spine vertebral bodies can be stably pulled.