131 results about "Interbody cage" patented technology

An expandable interbody with a modular endplate has an outer column, an inner column threadedly coupled and translatable relative to the outer column along the longitudinal axis, and an expansion ring to adjust a body length of the expandable interbody. The expansion ring has a plurality of teeth, and the outer column has at least one arm for engaging a tooth of the plurality of teeth to lock the expansion ring. The inner column and / or outer column can include a connector for connection to a modular endplate that has a substantially hollow core. The modular endplate includes a plate with a set screw entrapped therein. The modular endplate has an aperture to receive the connector of the inner and / or outer column.

The invention provides an interbody fusion cage. The interbody fusion cage comprises an upper vertebral plate, a lower vertebral plate and a shell, the driving device comprises a driving rod, and a bevel gear pair is arranged on one side of the driving rod; the transmission bevel gear is meshed with the bevel gear pair; the top of the supporting rod is provided with a first spherical hinge, the first spherical hinge is embedded into the spherical seat of the upper vertebral plate, the outer surface of the supporting rod is provided with a transmission thread, and the bottom of the supporting rod is provided with a second spherical hinge; the sleeve is arranged on the outer surface of the supporting rod in a sleeving mode, and the top of the flexible base abuts against the second spherical hinge. According to the technical scheme, the stress shielding effect in the implanting process of the interbody fusion cage can be effectively achieved, and the technical problem that the interbody fusion cage is attached to the physiological curvature can be effectively solved.

The invention provides an interbody fusion cage and a manufacturing method of the interbody fusion cage. The interbody fusion cage comprises a first end plate assembly, a second end plate assembly and an elastic supporting assembly. The two ends of the elastic supporting assembly are connected with the first end plate assembly and the second end plate assembly respectively. The first end plate assembly comprises an end plate body, a tooth retreating prevention structure and a porous structure, the end face of one end of the end plate body is connected with the elastic supporting assembly, and the end face of the other end of the end plate body is a bearing contact face used for abutting against vertebra tissue; the tooth retreating prevention structure and the porous structure are respectively arranged on the bearing contact surface; the tooth retreating prevention structure protrudes out of the bearing contact surface and is used for being fixedly connected with vertebra tissue; hollowed-out holes are formed in the porous structure and used for allowing a part of growing vertebra tissue to extend into the porous structure. The interbody fusion cage solves the problems that in the prior art, due to the fact that the contact area between an interbody fusion cage and vertebrae is small, postoperative prostheses are prone to disengagement or looseness, end plate sclerotin is damaged, and the fusion efficiency is poor.

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.

The invention discloses a 3D printing bone grafting window-free porous tantalum metal interbody fusion cage which comprises a fusion cage body, the fusion cage body is integrally formed by machining medical-grade tantalum metal, and a clamping hole is formed in the front side of the fusion cage body and used for being connected with an operation instrument; the two groups of porous net racks are respectively fixed on the upper surface and the lower surface of the fusion cage body, the outer side surface of each porous net rack is a contact interface, and each contact interface is of an arc-shaped structure; bayonets are symmetrically formed in the inner wall of the front side of the fusion cage body, the clamping hole is formed between the bayonets, and the bayonets are used for limiting operation instruments. The porous tantalum material with high biological activity and high porosity is adopted, reliable spinal fusion can be achieved on the premise that bone grafting is not needed, the problems of bone taking trauma and donor region complications related to bone grafting and immunoreaction caused by allogeneic bone grafting are effectively solved, and therefore the occurrence risk of postoperative complications is reduced, and the bone grafting success rate is increased. The postoperative recovery process of the patient is improved.

The utility model provides an anti-receding expansion type interbody fusion cage, and relates to the technical field of medical equipment. The interbody fusion cage comprises a tube body and a pull rod. The pull rod comprises a rod body and a limiting block, and the rod body is inserted into the pipe body from one side. A limiting groove is formed in the inner side wall of the tube body, a baffle ring is arranged in the limiting groove, a clamping groove is formed in the rod body, and when the interbody fusion cage is opened, the baffle ring is arranged on the rod body in a sleeving mode and clamped into the clamping groove. According to the anti-receding expansion type interbody fusion cage, the invalid size of the cage after the cage is opened can be reduced, work is reliable, and the rebound risk is reduced.

[Solution] An expandable intervertebral spacer system has upper and lower plates forming a cage. The top, bottom, and sides of the cage have openings for receiving bone graft material. At least one angled section extends from the upper or lower plate into the cage. The upper and lower plates are connected to each other by a hinge at the proximal end of the cage. The cage is expanded by inserting a push rod from the proximal end of the cage against the angled section, forcing the upper and lower plates apart at a desired angle. A locking mechanism at the distal end of the cage uses a ratcheting mechanism to secure the plates apart. In this ratcheting mechanism, a torsion spring biases a movable strut against a fixed strut, which cooperates with sawtooth engagement on the movable and fixed struts to secure the upper and lower plates apart.

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 two-stage intervertebral implant comprises an expandable cage comprising a pivot connecting upper and lower bodies, a first expansion mechanism, such as a wedge, configured to pivot the upper body and the lower body at the pivot point in a first stage, and a second expansion mechanism, such as a toggle joint, configured to pivot the upper body and the lower body at the pivot point in a second stage beyond the first stage. A method of implanting an implant comprises inserting the implant into anatomy, the implant comprising a first component rotatably coupled to a second component at a pivot point, operating a first expansion mechanism to rotate the implant at the pivot point to expand the implant to a first level, and operating a second expansion mechanism to rotate the implant at the pivot point from the first level to a second level.

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.

An interbody cage for the spinal column structured as a scaffold made of at least two folding and unfolding scaffoldings: one base member (also named a cage body) which receives the pivoting means of a pivoting member (also named an extension member), and one extension member, structured to pivot around an axis on the cage body from a first folded or stowed configuration to a second unfolded or deployed configuration such that the perimeters of the contact surfaces between the interbody cage and the vertebrae and / or the height of the interbody cage increase from the stowed configuration to the deployed configuration.

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.

This invention belongs to the field of medical devices and discloses an adjustable interbody fusion device, comprising a shell, a first support member, a second support member, and a built-in drive mechanism. The two support members are respectively located on the upper and lower surfaces of the shell. The drive mechanism uses coaxially arranged first and second threaded members, which respectively drive the first and second pushing members to move in opposite directions, thereby opening the head and tail ends of the two support members to achieve parallel opening of the support members. This invention replaces the traditional hinge drive with a threaded member drive, allowing the two threaded members to work independently without interference, simplifying the drive structure of the fusion device head and increasing the overall structural strength.

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.

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.

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.

An intervertebral bone fusion implantable device configured with flexible structural elements on its top and bottom surfaces for controlled dampening of the compressive force exerted on the device by two vertebrae and for the maximization of the contact surface between the device and the uneven endplates of the vertebrae.

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.

The invention relates to the technical field of medical instruments, in particular to an interbody fusion cage which comprises an interbody fusion cage body, the interbody fusion cage body is of a polyhedral structure and is implanted into the lumbar intervertebral space through an anterior lateral approach, and a screw channel and a connecting screw opening are formed in the front end position and the rear end position in the length direction of the interbody fusion cage body respectively; the screw channel is used for allowing screws to penetrate through the upper surface and the lower surface of the interbody fusion cage body, connected with the vertebral cancellous bone in a matched mode and fixed to the inner side of the lateral portion of the vertebral cancellous bone. The connecting screw is used for being connected with an installation instrument in a matched mode when the interbody fusion cage is implanted. By means of the screw channel, the fixing capacity of the interbody fusion cage can be effectively improved, better stability can be effectively provided for an OLIF operation through a proper implantation position and screw placement internal fixing operation, the occurrence risk of postoperative internal fixing related complications is effectively reduced, and the safety of the interbody fusion cage is improved. The effectiveness and the safety of the fusion cage in the lumbar vertebra front and outer side approach interbody fusion operation are improved.

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.

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.

The application provides a somatosensory method and system based on an intervertebral fusion cage with an optical fiber inside, and relates to the technical field of intervertebral fusion cages. The method comprises arranging four cascaded optical fiber units arranged in the same direction and in a quadrangular distribution inside four support crossbeams of the intervertebral fusion cage respectively. When the intervertebral fusion cage is pressed, the support crossbeam arranged above the bone window is elastically deformed, four fiber gratings generate corresponding strains, the total pressure received by the intervertebral fusion cage is calculated according to the total strain generated by the four fiber gratings; the moment Mx in the X direction received by the intervertebral fusion cage is calculated according to the strain difference generated by the left two fiber gratings and the right two fiber gratings; the moment My in the Y direction received by the intervertebral fusion cage is calculated according to the strain difference generated by the front two fiber gratings and the back two fiber gratings; the motion state of the lumbar vertebrae is judged through the total pressure, the moment Mx and the moment My, and then the intervertebral fusion condition is evaluated.

The invention relates to the technical field of orthopedic implants, in particular to a 3D printed interbody fusion cage. According to the distraction device, the front end distraction module and the rear end distraction module are arranged, the rear end distraction module is rotationally connected with the upper distraction body and the lower distraction body through the multiple rotating pieces correspondingly, the movement stroke of a first rotating shaft rotationally connected with the rotating pieces is limited through a first limiting sliding groove formed in a linkage piece, and therefore the rear end distraction angle is limited; according to the front end opening module, the movement stroke of a sliding piece on a front end moving piece in the axial direction and the height direction is limited through a second limiting sliding groove obliquely formed in a lower opening body, and therefore linkage adjustment of the angle and the height can be achieved at the same time when the front end is opened; when the first pushing rod and the second pushing rod are driven at the same time, the sliding piece and the second limiting sliding groove are matched, the rotating piece and the rotating shaft are matched, the first limiting sliding groove is matched, and the fourth rotating shaft and the third limiting sliding groove are matched to achieve synchronous opening of the front end and the rear end of the opening body.