2245results about "Spinal implants" 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 present disclosure provides for spinal implants configured for lateral insertion techniques deployable between a contracted position and an expanded position. The spinal implant may include a first endplate and a second endplate, each having a plurality of guide walls and inclined ramps. The spinal implant may further include a moving mechanism having first and second trolleys configured to act against the first and second plurality of ramps. The moving mechanism may further include a first set screw and a second set screw opposite the first set screw. The moving mechanism may be configured to operably adjust a spacing between the first and second endplates upon simultaneous rotation of the first and second set screws along a rotation axis, and may also operably adjust an angle of inclination between the first and second endplates upon rotating the first set screw or second set screw along the rotation axis.

An expandable intervertebral implant may include a superior endplate configured to engage a superior vertebra, and an inferior endplate configured to engage an inferior vertebra, wherein the inferior endplate may be spaced apart from the superior endplate by a gap. The expandable intervertebral implant may further include a first slider moveable along a first direction to urge linear expansion of the gap, and one or more cams each coupled to the first slider. The one or more cams may be configured to urge angular expansion of the gap in response to at least one of: rotation of the one or more cams about a rotation axis, and motion of the one or more cams along the first direction.

The invention discloses a 3D printing metamaterial piezoelectric type interbody fusion cage, and relates to the technical field of interbody fusion cages, the 3D printing metamaterial piezoelectric type interbody fusion cage comprises vertebra skeletons and a material piece, the material piece is arranged between the vertebra skeletons, a plurality of holes are formed in the surface of one side of the material piece at equal intervals, the holes are of a three-dimensional porous structure, the holes comprise Gyandroid, SchwarzP and Diamond structures, and the Gyandroid, SchwarzP and Diamond structures are arranged in the material piece. The Gyandroid structure, the SchwarzP structure and the Diamond structure are all extremely small curved surface structures; the device has a unique three-dimensional porous structure, so that stress is uniformly distributed in the material, material fatigue or damage caused by local stress concentration is avoided, the structural stability and reliability of the fusion cage in a long-term complex mechanical environment are ensured, a crystal structure in the piezoelectric material is deformed, and the fusion cage has a good mechanical property. The positive and negative charge centers are relatively displaced, so that a potential difference is generated at the two ends of the material, electric signals are formed, the electric signals can interact with surrounding bone tissue cells, and efficient function exertion in the spine repair and fusion process is achieved.

Methods are described for conducting minimally invasive medical interventions utilizing instruments and assemblies thereof to stabilize and / or fixate a dysfunctional sacroiliac (SI) joint. In one embodiment, a defect creation assembly is advanced from a posterior approach into the SI joint and configured to create pilot SI joint opening; portions of which being disposed in the sacrum and ilium bone structures. After the pilot SI joint opening is created, a prosthesis is press-fit into the pilot SI joint opening, wherein the pilot SI joint opening transitions to a larger post-prosthesis insertion SI joint opening and the prosthesis is securely engaged to the sacrum and ilium bone structures.

An implant includes a plate having a plurality of fastener holes, the plurality of fastener holes being configured to receive a plurality of fasteners, respectively; a spacer coupled to the plate and configured to be inserted into a treatment region; and a fastener lock movably coupled to the plate and configured to lock the plurality of fasteners.

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.

A personalized fixation system includes a surgical planning software tool configured to adjust relationships of relevant anatomy of a subject, at least one bone anchor, a plate having a shape that does not conform to a single plane, the plate configured to accept the at least one bone anchor, wherein the shape of the plate is at least partially determined by the surgical planning software tool, and wherein the plate includes at least one node having a hole configured to receive the at least one bone anchor, and a locking element configured to connect the at least one bone anchor to the plate, wherein the plate is manufactured using additive manufacturing.

The invention relates to a self-generating interbody fusion cage and a preparation method thereof, the interbody fusion cage comprises a porous tantalum support and bioactive piezoelectric ceramic arranged on the porous tantalum support, and the bioactive piezoelectric ceramic comprises hydroxyapatite and barium titanate; the preparation method comprises the following steps that the porous tantalum support is obtained through 3D printing, assembling positions of the bioactive piezoelectric ceramics are reserved on the upper surface and the lower surface of the porous tantalum support, the bioactive piezoelectric ceramics are embedded into the assembling positions of the upper surface and the lower surface of the porous tantalum support, and the weight ratio of barium titanate to hydroxyapatite is (92-98): (2-8). Compared with the prior art, the vertebral fusion cage has the advantages of promoting vertebral fusion by utilizing mechanical force in a human body to generate electricity, matching mechanical properties of a contact surface of the fusion cage, providing osteogenesis related ions, being relatively good in interface combination and the like.

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.

An expandable intervertebral implant may include a superior endplate configured to engage a superior vertebra, and an inferior endplate configured to engage an inferior vertebra, wherein the inferior endplate may be spaced apart from the superior endplate by a gap. The expandable intervertebral implant may further include a first slider moveable along a first direction to urge linear expansion of the gap, and one or more cams each coupled to the first slider. The one or more cams may be configured to urge angular expansion of the gap in response to at least one of: rotation of the one or more cams about a rotation axis, and motion of the one or more cams along the first direction.

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.

Intervertebral spacer implants with dynamic load spreading features responsive to external loads and having attachment mechanisms. The dynamic load spreading features having a native state and a loaded state, which complements vertebral end plate geometry and disperses load to the epiphyseal rim.

A sacroiliac fusion implant device assembly has an implant body and a pair of bone fasteners. The implant body has a distal end and a proximal end with a longitudinal axis extending between a center of the distal end and a center of the proximal end. The distal end has cutting edges configured to cut tissue as the implant is pressed into a joint between a sacrum and an ilium. The proximal end has two bone fastener receiving apertures, each configured to receive a bone fastener and the implant body has a pair of sidewalls connecting the distal and proximal ends. The pair of bone fasteners can be a pair of threaded fasteners, or a pair of spike fasteners or a combination of one threaded fastener and one spike fastener.

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 present invention refers to an implant, comprising a body, a bone contacting outer member having an elongate geometry, wherein the outer member is attached to the body, and a support member having an elongate geometry, wherein the support member is attached to the body, wherein the support member is attached to the outer member, wherein the outer member has a bone contacting outer surface, wherein the elongate geometry of the outer member has an outwardly facing surface portion, wherein the outwardly facing surface portion is a curved surface portion including a first distal surface region, a proximal surface region and a second distal surface region, wherein the first distal surface region is configured as a vertebral contacting surface and wherein the second distal surface region is configured as a vertebral contacting surface, and wherein the support member is attached to the outer member at a location proximate the proximal surface region.

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.

Devices and methods for making a polymer with a porous layer from a solid piece of polymer are disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.

A spinal implant device is provided comprising a body structure with a central cavity and a movable lid configured to cover the central cavity. The movable lid is configured to be opened to pack a material in the central cavity. The movable lid can be connected to the body structure with a moveable joint. The spinal implant device can include a compressible feature. A method for treating the spine is provided comprising opening a movable lid of a spinal implant device, packing a material in a central cavity of a spinal implant device, closing the movable lid, and inserting the spinal implant device between vertebrae.

Disclosed methods, devices, and systems are suitable for performing minimally-invasive procedures for accessing the intervertebral space along an oblique pathway with an insertion instrument that holds a disc implant, and reorienting the angular relationship between instrument and implant while the implant is inside the body (for example at or within the disc space).

The present technology includes patient-specific spinal fusion devices, which may include an interbody implant that is designed to be positioned within a disc space between two vertebral bodies and one or more fixation elements that can anchor the interbody implant to the vertebral bodies. The fusion devices include one or more retention mechanisms for retaining the fixation elements within corresponding lumens or bore holes extending through the interbody implant. Methods for designing and manufacturing patient-specific spinal fusion devices are also described herein.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical / mini open approaches and the percutaneous, “ultra-MIS” techniques.

A bellows shaped spinal implant, comprising an upper plate, a lower plate and a bellows shaped shell extending between and joining the upper and lower plates. The bellows shaped shell is formed of titanium or an alloy comprising titanium and includes a wall extending therearound that defines a hollow interior. The wall has a thickness in the range of 0.5 mm to 1.0 mm to provide for radiographic imaging through the wall. The wall is angled or curved inwardly or outwardly between the upper and lower plates to provide stiffness mimicking the stiffness properties of a similarly sized polyetheretherketone (PEEK) implant. The upper and lower plates each comprise porous contact regions including a three-dimensional gyroid lattice structure defined by a plurality of struts and pores in communication with the hollow interior. The outer surfaces of at least a portion of the struts may comprise a laser ablated textured surface.

Prosthetic devices allow for full articulation of the joint, while absorbing impact of the components during normal use that will reduce wear on the device components and prolong life. The device may include a bone implantable component and a bearing component having an articulation surface that is sized and shaped to substantially mate with at least a portion of the bone implantable component and a damping mechanism that includes a contact member disposed at least primarily inside a cavity; a biasing member biasing the contact member toward an upper aperture of the cavity and means for capturing the contact member within the cavity.

Expandable spinal implants, systems and methods are disclosed. An expandable spinal implant may include a first endplate, a second endplate, and a moving mechanism that is operably coupled to the first and second endplates. The moving mechanism may include a wedge, a first sliding frame and a second sliding frame disposed on opposite sides of the wedge, a screw guide housing a rotatable first set screw and a rotatable second set screw opposite the first set screw. The first set screw may be operably coupled to the second sliding frame and the second set screw may be operably coupled to the wedge. The moving mechanism may operably adjust a spacing between the first and second endplates upon simultaneous rotation of the first and second set screws and operably adjust an angle of inclination between the first and second endplates upon translating the first set screw or second set screw.

Systems and methods for providing an interbody implant are disclosed. According to some implementations, the implant includes an implant body having a cranial face and a caudal face disposed opposite the cranial face. In some implementations, the implant includes one or more primary fixation mechanisms, which in turn can include one or more anchor cavities defined by the implant body. In some cases, one or more anchors are configured to be housed at least partially within the anchor cavities in an undeployed position, and the anchors are configured to be translationally deployed to a deployed position in order to couple the implant to a bony endplate of a spinal vertebra. In some implementations, the implant includes one or more actuators configured to effectuate selective deployment of the anchors.

A system and computer-implemented method for manufacturing an orthopedic implant involves analyzing tissue characteristics based on image data of anatomy. Image data of a patient can be analyzed to identify at least one tissue characteristic at different locations along anatomic elements of anatomy of interest. A patient-specific implant configuration can be determined based on the analysis of the image data of a patient.

Systems and methods for designing and implementing patient-specific surgical procedures and / or medical devices are disclosed. In some embodiments, a method includes receiving a patient data set of a patient. The patient data set is compared to a plurality of reference patient data sets, wherein each of the plurality of reference patient data sets is associated with a corresponding reference patient. A subset of the plurality of reference patient data sets is selected based, at least partly, on similarity to the patient data set and treatment outcome of the corresponding reference patient. Based on the selected subset, at least one surgical procedure or medical device design for treating the patient is generated.

A surgical instrument kit for spinal fusion. The instrument kit includes a curved trocar (10), a flexible cannula (30) for positioning over the curved trocar, a flexible rasp device (70), and a bone graft delivery container (90).

A variety of expandable cage improvements are provided. The cages can have a width expansion assembly that operates independently of a height expansion assembly and the wedges and ramps do not need to make contact with each other. Wedges, or movable spacers with pivotal link connections, can be used, and any portion of the cage can be expanded in width or in height in an amount that differs from other portions of the cage to provide any of a multitude of desired cage shapes. Interdigitating fingers, slidable and / or pivoting, are provided to distribute stresses over a vertebral endplate as desired.