176 results about "Intervertebral fusion" patented technology

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.

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.

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.

The application provides a three-period minimal surface intervertebral fusion cage design method, relates to the technical field of porous structure design, and determines a design domain of a three-period minimal surface TPMS porous structure region, combines individual vectors of modeling parameters of corresponding TPMS of each region, randomly generates a plurality of individual vectors, and forms an initial population; finite element simulation is carried out on the TPMS porous model corresponding to each individual vector, so as to divide the initial population into a load advantage population and a pore advantage population; the individual vectors are selected from the load advantage population and the pore advantage population respectively to perform improved neighborhood directional crossover operation; an optimal three-period minimal surface TPMS porous structure region is obtained through iterative genetic algorithm; through improved crossover operation and neighborhood directional crossover between the load advantage population and the pore advantage population, the new generation of individuals can consider both load performance and pore performance, and optimization is avoided around a single performance.

The invention discloses a spine intervertebral fusion implant positioning structure, which relates to the technical field of intervertebral fusion cage, and comprises a fusion cage upper moving part and a fusion cage lower moving part, which are mutually clamped, bone grafting holes for implanting bone blocks are formed in the fusion cage upper movable part and the fusion cage lower movable part in a penetrating manner; through the arrangement of the fusion cage upper moving part, the fusion cage lower moving part and the expandable connecting rods, stable support is formed between adjacent vertebral bodies, the correct height between the vertebral bodies is maintained, meanwhile, through the arrangement of the connecting rods, the connecting rods and the push rods, the situation that the interbody fusion cage is deformed in the process of bearing pressure between the adjacent vertebral bodies in the use process is avoided, and the use safety of the interbody fusion cage is improved. And through the arrangement of the helical tooth blocks and the clamping blocks, the fusion cage is prevented from being deformed due to the fact that the adjacent intervertebral pressure is too large in the using process.

A multi-portal method for treating a subject’s spine includes distracting adjacent vertebrae using a distraction instrument positioned at a first entrance along the subject to enlarge an intervertebral space between the adjacent vertebrae. An interbody fusion implant can be delivered into the enlarged intervertebral space. The interbody fusion implant can be positioned directly between vertebral bodies of the adjacent vertebrae while endoscopically viewing the interbody fusion implant using an endoscopic instrument. The patient’s spine can be visualized using endoscopic techniques to view, for example, the spine, tissue, instruments and implants before, during, and after implantation, or the like. The visualization can help a physician throughout the surgical procedure to improve patient outcome.

The application discloses a risk prediction method for subsidence of an intervertebral fusion cage after lumbar interbody fusion, and comprises the following steps: acquiring preoperative image data and postoperative image data within one week after operation of a target patient, wherein the preoperative image data and the postoperative image data comprise multiple image features reflecting local anatomical morphology, sagittal balance and bone conditions of the spine; inputting the multiple image features into a pre-trained subsidence risk prediction model to obtain a risk probability of the target patient suffering from the subsidence of the intervertebral fusion cage; wherein the subsidence risk prediction model is obtained by screening a core prediction feature set through a "funnel type" feature screening process of fusing preoperative native anatomical parameters and postoperative early image parameters, and by training the core prediction feature set by using a machine learning algorithm based on a historical patient data set containing subsidence samples and non-subsidence samples; and the application reduces the occurrence of postoperative complications.

A biomimetic intervertebral fusion device with a piezoelectric multifunctional coating belongs to the field of implantable medical devices. It includes an upper piezoelectric multifunctional coating, a fusion device body, and a lower piezoelectric multifunctional coating. A bone graft window is located in the middle of the biomimetic intervertebral fusion device. The piezoelectric multifunctional coating is made of electrospun piezoelectric PVDF / HA fibers, which are conformally adhered to the upper and lower surfaces of the fusion device body through a polydopamine adhesive layer. The upper and lower surfaces of the fusion device body have a biomimetic curved surface configuration to match the morphology of the vertebral endplates, increasing the contact area and reducing stress concentration at the fusion interface. While maintaining an elastic modulus similar to natural bone and good radiation permeability, this fusion device, after implantation, can create a microenvironment conducive to cell adhesion and proliferation. Under the influence of cell traction, ultrasonic stimulation, and the physiological load of the human lumbar spine, it generates electrical stimulation signals, promoting bone fusion, improving the stability of the fusion interface, and reducing the risk of postoperative loosening and subsidence of the fusion device.

The application discloses a 3D-printed intervertebral fusion cage, which is used to solve the problem of poor bone ingrowth effect of the prior art fusion cage, slow degradation speed, and early release of active ingredients, and the structure comprises a frame and an embedded pipe, the embedded pipe is arranged in the frame, the components are all made of degradable metal materials and can be gradually degraded in the human body, the embedded pipe is further encapsulated with active ingredients for promoting bone growth, and the active ingredients are released with the degradation of the embedded pipe, so that the early release of the drugs in the embedded pipe is avoided, long-acting effect is achieved, and of course a net beam is arranged in the gap of the frame, and the porous structure formed by the net beam further increases the bone ingrowth effect; the application creatively uses a 3D process to realize the encapsulation of the active ingredients and the forming of the porous support, and is combined with the degradable metal to realize the sustained release, so that a good growth condition is provided for the bone ingrowth in the porous support, the effect of the growth factors is fully played, and the treatment effect is improved.

This invention discloses an angle-expandable intervertebral fusion device, comprising: a first support plate for supporting a first part of the vertebral body; a second support plate for supporting a second part of the vertebral body; a proximal wedge located between the first and second support plates, with the proximal ends of the first and second support plates respectively rotatably connected to the proximal wedge; a distal wedge located between the first and second support plates, slidably connected to the first and second support plates; and a drive mechanism, the distal end of which is located within the distal wedge, and the proximal end of which is rotatably connected to the proximal wedge. The fusion device of this invention has a very small initial volume, allowing for easy implantation into the diseased intervertebral space, reducing damage to the vertebral structure and soft tissues, and eliminating the need for excessive expansion of adjacent vertebral height. After implantation into the intervertebral space, the distal end of the drive fusion device is gradually expanded until the patient's lumbar spine conforms to the physiological curve of the human body.

The utility model relates to the intervertebral fusion cage technical field discloses a kind of anti-drop intervertebral fusion cage. To solve the stress shielding problem in the actual use of conventional intervertebral fusion cage in prior art, and porosity is lower, fusion rate is low after operation;Lack of bone integration channel, the technical problem of low fusion rate after operation. The utility model includes support frame, at least two bone graft channels are arranged on support frame, to fill bone induction material and promote bone growth;Support frame end is provided with clamping groove;Support frame includes edge support part, and edge support part is connected by porous structure between;The porosity of porous structure gradually changes from small to large by the direction close to far from vertebral body, and presents gradient distribution. The utility model effectively balances the problem of insufficient porous structure strength, and the problem of too large solid structure quality, and the porosity of porous structure is large, has more bone integration channel, is conducive to the growth of bone cell, and can effectively improve bone growth rate.

A system for performing interbody fusion surgery including an expandable intervertebral spacer and specialized instruments for choosing the correct size of implant, implanting the device within the intervertebral space, and for delivery of bone graft or bone substitute to the interior of the implant.

The invention provides an interbody fusion cage which comprises an upper supporting plate, a lower supporting plate and a supporting piece, the lower supporting plate and the upper supporting plate are arranged in a spaced mode, the lower supporting plate is located below the upper supporting plate, the supporting piece is connected between the upper supporting plate and the lower supporting plate, and the upper supporting plate and the lower supporting plate are made of memory materials. And the elastic body is configured to be in a bent and shrunk first shape at a first temperature and recover to a stretched second shape at a second temperature higher than the first temperature. According to the interbody fusion cage, the upper supporting plate and the lower supporting plate which are made of the memory materials are arranged, the upper supporting plate and the lower supporting plate are bent and shrunk before implantation and are triggered by the body temperature to stretch after implantation, so that the size of an implant is remarkably reduced to achieve minimally invasive implantation, and the adaptability and the initial stability are improved by increasing the supporting area after expansion.

Intervertebral fusion device comprising a superior component, an inferior component, and a core component. The superior component comprises first and second superior parts which are coupled to each other to allow the first and second superior parts to move apart to thereby increase a perimeter of the superior component top side. The inferior component comprises first and second inferior parts which are coupled to each other to allow the first and second inferior parts to move apart to thereby increase a perimeter of the inferior component bottom side. The core component is configured for insertion between the superior and inferior components whereby separation between the superior and inferior components is determined. The core component interengages with each of the superior and inferior components upon insertion. The superior and inferior components are unattached to each other before the core component is inserted between the superior and inferior components. As the core component is progressively inserted between the superior and inferior components, the core component: bears against the first and second superior parts to push the first and second superior parts progressively apart; and bears against the first and second inferior parts to push the first and second inferior parts progressively apart.

The utility model belongs to the technical field of orthopedic implants, and particularly relates to a porous bone grafting-free window type interbody fusion cage. The multi-hole type bone grafting window-free interbody fusion cage comprises a frame body which comprises four side faces and two end faces, and the four side faces are of hollow structures; the space defined by the frame body is filled with the porous structure body; the meshing teeth are arranged on the upper surface and the lower surface of the frame body; and the clamping structure is arranged at one end part of the frame body. According to the multi-hole type bone grafting-free window type interbody fusion cage, due to the design of the bone grafting-free window, the complexity of the using process is reduced, the operation is convenient, and the possibility that the fusion cage is polluted is reduced; the porous structure body with the bionic bone trabecula can be printed through 3D printing, and pore channels for bone tissue to grow in and a surface beneficial to cell adhesion can be effectively provided; the hydroxyapatite coating improves the biological activity of the surface of the base material and enhances the interface integration of the interbody fusion cage and the upper and lower end plates of the vertebral body.

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 discloses a spine minimally invasive intervertebral fusion cage and a rigid fixing device thereof, and relates to the technical field of medical implantable instruments, and the spine minimally invasive intervertebral fusion cage comprises a lumbar vertebra body and a vertebral plate nail. According to the spine minimally-invasive intervertebral fusion cage and the rigid fixing device thereof, the total length of the connecting rods is adjusted according to the specific spine curvature of a patient and the actual positions of the two vertebral plate nails, so that the optimal matching position is found and corresponds to the actual requirement, and the spine minimally-invasive intervertebral fusion cage and the rigid fixing device thereof are convenient to use. The stress concentration on a single component is reduced through a surface contact and multi-point multi-direction fixing mode; the rigid supporting frame is symmetrically distributed on the two sides and is not fixed to the middle of the spine, then a core nerve structure is avoided, the symmetrically-distributed rigid fixing devices and the spine jointly form a three-dimensional triangular supporting frame, then lateral bending and rotation are resisted, and therefore the stable supporting structure is constructed; and a good mechanical environment is created for spinal fusion.

1. The name of the design product: intervertebral fusion cage. 2. The use of the design product: intervertebral fusion cage for fitting intervertebral space infection in spinal surgery, achieving the purpose of columnar bone fusion. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: reference drawing in use.

The present application relates to a kind of intervertebral fusion cage, including body, with the first surface and the second surface of facing away, the body is provided with the bone graft cavity through the first surface and the second surface;Rotary shaft, with the body relatively rotatable connection, the axial end of rotary shaft respectively extends the first surface and second surface.Surperior fusion cage is used when in the process of intervertebral fusion surgery, when doctor needs secondary adjustment fusion cage position, rotary shaft remains unmoved, body can rotate around rotary shaft, since the two ends of rotary shaft are slightly higher than the surface of body, the extrusion and friction between body and vertebral endplate during body rotation will reduce, reduce the probability of body escape;Also reduce the difficulty of doctor rotating and adjusting fusion cage during operation, reduce operation time.In addition, since reducing the secondary extrusion and friction to vertebral endplate, reduce the pain of patient.

The utility model provides an interbody fusion cage which comprises a body and threads formed on the outer surface of the body, and is characterized in that the interbody fusion cage is provided with an opening groove used for containing bone grafting materials, the opening groove is spirally arranged along the outer surface of the interbody fusion cage, the interbody fusion cage comprises a front end portion and a rear end portion, the front end portion is in a circular truncated cone shape, and the rear end portion is in a circular truncated cone shape. The rear end part is cylindrical, the threaded teeth of the front end part are provided with front end threaded tooth tips pointing to the front end, and the threaded teeth of the rear end part are provided with rear end threaded tooth tips pointing to the rear end. Therefore, the correct distance between the upper vertebral body and the lower vertebral body is guaranteed, and meanwhile bony fusion between the vertebral bodies is effectively promoted.

An interbody spacer configured for implantation between spinal vertebrae. The interbody spacer including electrical circuitry within an electronics housing of the interbody spacer and a plurality of load sensors spaced apart on carriers of the interbody spacer. The plurality of load sensors electrically connectable to the electrical circuitry and configured to provide to the electrical circuitry a load signal indicative of a measurement of force exerted onto the plurality of load sensors of the interbody spacer. The interbody spacer further including a plurality of electrodes spaced apart on a surface of the interbody spacer. The plurality of electrodes electrically connectable to the electrical circuitry and configured to at least one of provide to the electrical circuitry an electrode signal indicative of an impedance measurement and generate an electrical field between at least two electrodes of the plurality of electrodes.

Improved fixation or stabilization of implants is achieved via one or more deployable spikes or anchors. The deployable spikes or anchors may be present in the implant in a nested, collapsed, or retracted position while the implant is inserted into the human body, and may then be deployed (e.g., into adjacent bone) after the implant is in place, thereby fixing the implant's location against unwanted movement. Such fixation or stabilization of the implant may reduce patients' pain, may improve overall short-term and long-term stability of the implant, and may improve osteo-integration into the implant.

The present application provides a mechanically adaptive intervertebral fusion device with variable stiffness, comprising: a deformable structure group and two plates, the deformable structure assembly being disposed between the two plates, the two plates having a critical point spacing value, and when the spacing between the two plates is greater than the critical point spacing value, the multiple structural portions of the deformable structure group are separated, the deformable structure group having a first stiffness, and when the spacing between the two plates is less than or equal to the critical point spacing value, the deformable structure group deforms, some structural portions of the deformable structure group abut against each other, and the mechanically adaptive intervertebral fusion device having a second stiffness, wherein the second stiffness is greater than the first stiffness. The fusion device of the present application can adapt to the internal mechanical environment by changing its own stiffness, exhibiting a lower stiffness when responding to low loads and a higher stiffness when subjected to high loads, thereby improving the mechanical compatibility with adjacent vertebrae, optimizing mechanical load transfer, reducing adjacent vertebral collapse, and promoting vertebral fusion.

This invention provides an interbody fusion device and its preparation method, comprising: metal endplates symmetrically arranged vertically, with a mesh structure on the surface of the metal endplates, the mesh structure including: a bone mesh on the outer surface of the metal endplates, a coupling mesh on the inner surface of the metal endplates, a metal separator layer fixedly disposed between the bone mesh and the coupling mesh, and a linkage locking seat disposed on the inner surface of the metal endplates; a cable passing through the linkage locking seat on the inner surface of the aforementioned metal endplates; a polymer matrix fixed between the aforementioned pair of metal endplates by the aforementioned shear-resistant structure; a bone graft cavity, which is a cavity jointly formed by the metal endplates and the polymer matrix; and a positioning hole penetrating the aforementioned polymer matrix. This application addresses the technical problems that, with prolonged implantation time, complications such as displacement, coating peeling, settlement, stress shielding, bone resorption in adjacent areas, and delayed inflammatory reactions often occur.

The invention relates to a prosthesis used for being implanted between vertebrae, and particularly discloses an interbody fusion cage with a built-in anchoring element, which comprises a fusion cage body provided with two end surfaces, an anterior wall, a posterior wall, two side walls and a bone grafting window; two first linear channels extending from the front wall and penetrating to the rear side area of the end face and two second linear channels extending from the rear wall and penetrating to the front side area of the end face are formed in the fusion cage body on each side of the bone grafting window; the anchor rod is pre-arranged in the linear channel; the actuating mechanism comprises an operating head exposed to the front wall of the fusion cage body and an actuating main body positioned in the fusion cage body and used for driving the anchor rod; the operation head is screwed so that the actuating body can drive the anchor rods in the first linear channel and the second linear channel to obliquely stretch out forwards from the rear side area and the front side area of the end face correspondingly and respectively under the guidance of the linear channels, and the anchor rods are inserted into the vertebrae through the end plate.

An interbody spacer configured for implantation between spinal vertebrae. The interbody spacer including electrical circuitry within an electronics housing of the interbody spacer and a plurality of load sensors spaced apart on carriers of the interbody spacer. The plurality of load sensors electrically connectable to the electrical circuitry and configured to provide to the electrical circuitry a load signal indicative of a measurement of force exerted onto the plurality of load sensors of the interbody spacer. The interbody spacer further including a plurality of electrodes spaced apart on a surface of the interbody spacer. The plurality of electrodes electrically connectable to the electrical circuitry and configured to at least one of provide to the electrical circuitry an electrode signal indicative of an impedance measurement and generate an electrical field between at least two electrodes of the plurality of electrodes.

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.

A dual-axis adjustable spinal system and intervertebral fusion device with fixation members are disclosed. Also disclosed is an apparatus or system employing a fixation assembly to stabilize and prevent migration of an intervertebral fusion device placed between adjacent vertebral bodies, and / or to provide supplemental fixation of adjacent vertebral bodies. The fixation assembly can include a modular fixation plate that is insertable and attachable in situ to the intervertebral fusion device. In certain embodiments, the fixation assembly can include a single fixation plate that is insertable and / or attachable in situ to the intervertebral fusion device. In certain embodiments, the fixation plate is integrally formed with the intervertebral fusion device.