83 results about "Interbody cage" patented technology

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.

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 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.

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 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.

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.

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 invention relates to an interbody fusion cage and a preparation method thereof, and relates to the field of orthopedic implantation, the interbody fusion cage comprises a vertically placed cylindrical fusion cage main body and a pore structure fixedly connected in an inner hole of the fusion cage main body, and the pore structure is in a lattice net shape. The interbody fusion cage provided by the invention has a bone induction function, so that a good bone fusion effect can be achieved without bone grafting or with a small amount of bone grafting.

This invention relates to the field of interbody fusion device technology, specifically a 3D-printed porous interbody fusion device, comprising a fusion device body, a first filling hole penetrating through the middle of the fusion device body, and a plurality of internal reinforcing ribs evenly distributed circumferentially on the inner wall of the first filling hole. Based on the biomimetic mechanical design concept of the biomedical engineering industry, this interbody fusion device can break through the limitations of traditional fixed-width fusion devices, and can accurately match the anatomical width of the intervertebral space of different patients without the need for manual cutting and modification during surgery. It can fully adapt to the individualized needs of various heights, weights and disease segments, and fundamentally avoid the risks of endplate damage, infection and anchoring structure damage caused by cutting. After implantation, the self-locking component can achieve immediate rigid locking, completely blocking the reverse rebound path of the adjustment block. Combined with the multi-occlusal tooth structure, it forms a stable mechanical anchor, eliminating postoperative micromovement, displacement and slippage problems, and greatly improving the overall stability of the fusion device in the early stage of implantation.

This invention relates to a prosthesis for implantation between vertebrae. Specifically, it discloses an intervertebral fusion device with built-in anchoring elements, comprising: a fusion device body having two end faces, an anterior wall and a posterior wall, two side walls, and a bone graft window; each side of the bone graft window of the fusion device body has two first linear channels extending from the anterior wall and penetrating to the posterior region of the end face, and two second linear channels extending from the posterior wall and penetrating to the anterior region of the end face; an anchor rod pre-positioned in the linear channels; and an actuation mechanism including an operating head exposed on the anterior wall of the fusion device body and an actuating body located in the fusion device body for driving the anchor rod. By turning the operating head, the actuating body drives the anchor rods in the first and second linear channels to extend obliquely forward from the posterior and anterior regions of the end faces, respectively, under the guidance of their respective linear channels, and insert them into the vertebrae through the endplate.

The present application relates to intervertebral fusion holder medical instrument technology field, specifically speaking, a kind of holder and holding method, the holder includes screw rod, inner sleeve, outer sleeve, knob, locking block, the front end of the outer sleeve is equipped with with the inner support block of fusion ware middle clamping connector, the outer sleeve is equipped with inner sleeve, inner sleeve and outer sleeve sliding do not rotate connection, inner sleeve rear end stretches out outer sleeve and is connected with knob screw, the rear end surface of inner sleeve is equipped with fixed tooth, screw rod is inserted into inner sleeve, the front end of screw rod stretches out outer sleeve, the rear end of screw rod stretches out inner sleeve and is equipped with locking block, the front end surface of the locking block is equipped with with the locking tooth of fixed tooth meshing, by the assembly of holder, fixed inner support block, fixed outer expansion block, locking, inner support block advance, disengage, bone grafting etc. Step is used, with simple structure, holding effect is good, holding operation is simple, and it has advantages such as improving bone grafting efficiency.

A spinal plate selection and positioning system is provided for use in a spinal fusion procedure. The system may comprise an elongated guide member that is removably securable to an interbody cage by a holding rod. An interbody plate may be aligned and positioned above the interbody cage installed in a disc space. A drill guide may also be aligned and positioned above the interbody plate. The drill guide may be utilized to drill pilot holes in the vertebrae defining the disc space. Fasteners to secure the interbody plate may also by installed using the drill guide. The use of the guide member ensures that the interbody plate is properly aligned and positioned with respect to the interbody cage.

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.

This invention discloses a fully automated machining fixture for the production of intervertebral fusion devices, applied in the field of intervertebral fusion device processing technology. It includes a frame, an operating table, a clamping mechanism, a first processing mechanism, and a second processing mechanism. The operating table is located on the front side of the frame, and the clamping mechanism, processing mechanism one, and processing mechanism two are all located inside the frame. The clamping mechanism includes a fixed table, a first slide, a second slide, a hollow spindle, a feeding assembly, and a clamping head. The clamping head includes a chuck, several jaws, several clamping adjustment parts, and several pressure sensors. The clamping adjustment parts are located on the jaws and are used to fine-tune the clamping force, ensuring stable clamping force on the material. The pressure sensors are located on the clamping adjustment parts and are used to detect the clamping force. This invention enables precise adaptive clamping of the intervertebral fusion device material and effectively suppresses deformation.

The utility model discloses a cervical vertebra anterior approach interbody 3D printing porous metal integrated fusion device which comprises a fixator and a cervical vertebra interbody fusion cage, the inner side of the fixator is attached to an axis body and connected with the cervical vertebra body through a fixing insertion piece, and the cervical vertebra interbody fusion cage is connected with the inner side of the fixator. In the anterior cervical intervertebral disc resection fusion internal fixation, integration of bone fusion and internal fixation is achieved, so that the success rate of vertebral fusion is increased, the surgical bleeding amount and damage to muscular tissue are reduced, the surgical time is shortened, and a cervical vertebra complex can be safely and effectively fixed and fused.

The present application provides an intervertebral fusion cage and a manufacturing method thereof, wherein the intervertebral fusion cage comprises a first end plate assembly, a second end plate assembly and an elastic support assembly; the two ends of the elastic support 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 back-off prevention tooth structure and a porous structure; one end of the end plate body is connected with the elastic support assembly, and the other end is provided with a bearing contact surface; the back-off prevention tooth structure and the porous structure are arranged on the bearing contact surface respectively; the back-off prevention tooth structure protrudes from the bearing contact surface and is used for fixed connection with the vertebral tissue; the porous structure has hollow holes inside and is used for allowing a part of the growing vertebral tissue to extend into the porous structure. The present application solves the problem of low contact area between the intervertebral fusion cage and the vertebral bone in the prior art, and further solves the problems of postoperative prosthesis dislocation or loosening, end plate bone destruction and poor fusion efficiency.

The invention relates to the technical field of medical instruments, in particular to a three-screw-channel internal fixation 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 screw channels and connecting screw openings 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.

The objective of the present invention is to provide an interbody fusion cage device which: has bone fusion protrusions and bone fusion holes on an upper plate and a lower plate of a cage that is to be inserted between vertebrae, and has a grid-shaped elasticity providing body, formed over both side plates and a rear plate, for adjusting an elastic modulus of the cage to an elastic modulus of a bone such that bone fusion between the vertebrae and the cage is facilitated and subsidence in which the cage penetrates the vertebrae can be prevented; has diagonal screw insertion holes, formed on a front plate of the cage, to be structured such that the insertion direction of fixing screws can be vertically and horizontally adjusted and thus a margin for the direction in which the fixing screw is inserted into the vertebrae from the outside of the cage can be provided, thereby enabling convenience and accuracy of surgery for an operator to be improved; and has a screw fastening hole formed on the front plate of the cage such that a separation prevention screw for preventing the separation of the fixing screw can fastened thereto, and thus the loosening or separation of the fixing screw insertively fastened to the vertebrae from the cage can be prevented.