599 results about "Vertebral bone" patented technology

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.

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body having a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear ends. The front and rear ends extend in a transverse direction and a central axis of the body extends from the rear end to the front end. The rear end defines a first fastener hole having a first central axis and a second fastener hole having a second central axis. The first and second central axes extend parallel to one another at an acute angle relative to the body central axis in the transverse direction.

Implantable devices for dynamic interconnection between bones, and especially between vertebrae. The devices provide for various types of manipulation of a flexible connection such as a tether, such as by providing an aperture through which the flexible connection is passed and guided, or a post to which a loop of the flexible connection can be attached, or a groove in which a loop of the flexible connection can be placed.

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.

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.

Pedicle-based intradiscal fixation devices, systems, instruments, and methods thereof. The implant or a portion thereof may be composed of a shape-memory material, which has a curved shape-memory orientation and a temporarily straight orientation. The implant may be configured to be inserted into a pedicle of an inferior vertebra, through the vertebral body of the inferior vertebra, and into the vertebral body of the superior vertebra to thereby stabilize the inferior and superior vertebrae.

A modular retractor may include a first body portion that houses a distraction mechanism for opening and closing a first arm and a second arm. A first pivoting member may be coupled to a distal end of the first arm and a second pivoting member may be coupled to a distal end of the second arm, for example. A first pin receiving cannula may be coupled to the first pivoting member and a second pin receiving cannula may be coupled to the second pivoting member. The first and second pin receiving cannulas may receive a threaded pin therein and be independently inclinable. Various embodiments may include at least one quick connect coupler. During use, a first pin and a second pin may be secured to a first and second vertebrae for distracting and / or adjusting an angle of inclination of the first and second vertebrae.

Threaded bone implants, such as pedicle screws, are provided with an elongate body comprising a first portion, a second portion distal to the first portion, and a third portion distal to the second portion. The first, second and third portions may be provided with different features that correspond to first, second and third anatomical regions of interest in a vertebrae or other bone segment(s). The bone implants, systems, methods of manufacture, and methods of use disclosed herein may be used for the stabilization, fixation and / or fusion of the sacroiliac joint, the spine and or other bone segments.

Method and apparatus of automatic fracture detection from imaging scans are disclosed. A innovative manifold view combing advantages of earlier approaches while avoiding the limitations of these approaches is coupled with a deep learning based fracture detection model. Ribs and spine from a three-dimensional scan are segmented, rib centerlines and vertebra center landmarks are detected and labeled. Three-dimensional position coordinates corresponding to the received data are mapped to a defined two-dimensional manifold plane followed by interpolation and sampling techniques to generate a two-dimensional manifold slice and corresponding mapping function. A three-dimensional visualization of the rib cage is generated from a plurality of manifold slices. A trained fracture prediction model receives the plurality of manifold slices and generates a revised stack of two-dimensional manifold slices showing predicted fractures. The predicted fractures may be shown in the two-dimensional manifold slice or mapped back to the image space of the original three-dimensional scan.

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.

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

The invention provides a centrum bone mineral density automatic measurement method, device and equipment and a storage medium, and the method comprises the steps: carrying out the preprocessing of centrum CT data, and carrying out the analysis through a deep learning model, and obtaining the space coordinate information of centrum key points; determining an axial reference line according to the centrum key points and constructing a region of interest of a front region; based on the space coordinate information of the centrum key points, calculating spine morphological characteristics of the centrum, and adjusting the position and direction of the centrum region of interest according to the spine morphological characteristics; and extracting CT values of all voxels in the adjusted region of interest, and calculating an average value of the CT values of all voxels to obtain a vertebral bone mineral density measurement result. According to the method, automatic and accurate measurement of the vertebral bone mineral density is achieved, the technical problems that a traditional method is low in automation degree and cannot accurately adapt to spine morphological changes are solved, and the accuracy and consistency of bone mineral density measurement are improved.

An expandable vertebral device includes a base assembly having end portions that are movable relative to one another via adjustment of an adjustment mechanism at the first end portion. A plurality of movable plates are movably disposed at the base assembly and are at least vertically movable relative to the base assembly as the end portions are moved relative to one another. Each of the end portions has a pair of vertical guide elements and may have a pair of lateral guide elements. Each of the movable plates includes a vertical guide that moves along the respective vertical guide element and may have a lateral guide that moves along a respective lateral guide element. When the adjustment mechanism is adjusted to draw the end portions toward one another, the movable plates move outward from a longitudinal axis of the base assembly as the guides move along the respective guide elements.

Computer implemented method, computing device, system and computer pro-gram product to support selection between different types of pedicle screws (201-m) to be applied in a spine (202) comprising: generating a spinal 3D-model (MSpine) of a patient; generating a reinforcement 3D-model (MRod) of a reinforce-5 ment structure (30) for interconnecting vertebrae (2001-n) of the spine (202); generating a finite element model (FE) corresponding to the spinal 3D-model (MSpine) and the reinforcement 3D-model (MRod); applying a load onto the finite element model (FE) and determining loading factor(s) of the pedicle screws (201-m) using the finite element model (FE); and outputting an assessment of the plurality of different types of pedicle screws (201-m) based on the calculated loading factor(s).

A dual channel complementary spine image segmentation method for segmenting vertebral bodies and intervertebral discs is provided. [Solution] The method includes: obtaining a number of magnetic resonance images of the spine and corresponding label images, extracting and initially processing the slices to be segmented and the segmented slices; creating a residual neural network to extract detailed features, creating a spatial feature extraction device to extract related features, and creating a feature fusion module to fuse the detailed features and related features to obtain a segmentation feature map; outputting the segmentation results of only multiple categories through the network output layer, creating a dual-channel complemented spine image segmentation module; and obtaining an optimal dual-channel complemented spine image segmentation module through training, and obtaining the segmentation results of only multiple categories for the magnetic resonance image slices to be segmented.

Three-dimensional image data including at least a portion of a spine of a subject is received. The spine of the subject is identified in the three-dimensional image data and a spline is defined that approximates a local curvature along the spine. A plurality of volumes of interest (VOIs) are defined, each VOI containing at least a portion of a vertebra of the spine of the subject. Each VOI is defined relative to an adjacent segment of the spline. A fracture in at least one of the VOIs is identified.

The utility model discloses a biopsy sleeve, a biopsy suit device and a biopsy puncture suit device. The biopsy sleeve comprises a metal rod which is of a hollow structure; the holding part is arranged at the rear end of the metal rod; and the metal wire is arranged in the front end of the metal rod and is transversely arranged on the cross section of the metal rod. After the biopsy sleeve is inserted into a to-be-taken tissue part, the holding part is rotated, the front end of the metal rod and the metal wire can completely cut the biopsy tissue, a base part of a to-be-biopsy bone tissue is included, especially the metal wire can help to complete cutting dissociation of a target puncture part, and therefore the biopsy tissue can be taken out smoothly; the technical problem that in the prior art, a base part of a biopsy puncture device for pre-fetching sclerotin is often connected with remaining sclerotin of a vertebral body, and bone tissue in the vertebral body cannot be taken out is solved. The device has the advantages of simple structure, low cost, complete and thorough cutting, light weight, high strength, convenience in operation and the like.

An intervertebral implant may include a shaft having a proximal end, a distal end, a longitudinal axis, a minor diameter, and a helical thread disposed about the shaft along the longitudinal axis between the proximal end and the distal end of the shaft. The helical thread may include a major diameter and a concave undercut surface angled towards one of the proximal end and the distal end of the shaft. The intervertebral implant may be implanted within an intervertebral space between a superior vertebral body and an inferior vertebral body. A ratio of the major diameter to the minor diameter may be less than 1.50. The concave undercut surface may engage the superior vertebral body and the inferior vertebral body and may be shaped to resist at least one force transmitted between the superior vertebral body and the inferior vertebral body to stabilize the intervertebral space.

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.

An expandable interbody spacer for placement between adjacent vertebrae having two or more upper and lower endplates and lateral expansion wedges configured to couple a drive means to expand both a height and a width of the expandable interbody spacer from a collapsed state to an expanded state.

The invention relates to the technical field of osteoporosis screening, in particular to a method for screening osteoporosis of patients with spine deformation by using spiral CT (computed tomography) image.The method comprises the steps that a plurality of patients with spine deformation are scanned through a spiral CT machine, and a coronal plane CT image and a sagittal plane CT image of the spine of each patient and a cross section CT image of each vertebra node in the spine are obtained; acquiring the bone mineral density excellence degree of each vertebra node in the spine of each patient; obtaining the abnormal degree of each gap distance in the gap distance sequence of each patient; obtaining the influence degree of osteoporosis on each gap distance in the gap distance sequence of each patient; according to the influence degree, the first influence degree and the bone mineral density rule damage degree, the osteoporosis risk degree of each vertebra node in the spine of each patient is obtained; and evaluating the osteoporosis condition of each patient. According to the invention, the screening accuracy for osteoporosis of patients with spinal deformations is improved.

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

According to some embodiments, a method of accessing an intervertebral space of a patient's spine in a minimally invasive manner compromises creating a passage from a posterior end of a pedicle of a vertebral member using a probe, advancing the probe through the pedicle and to a main body portion of the vertebral member, advancing the probe through a superior endplate of the vertebral member and into the intervertebral space and enlarging the passage using at least one tap to create an enlarged passage from a posterior of the pedicle to the intervertebral space. In some embodiments, the enlarged passage traverses at least three cortical layers of the vertebral member.

The present disclosure relates to an artificial lumbar disc and provides a lateral approach artificial disc that is inserted laterally rather than anteriorly of the spine, thereby preventing damage to blood vessels or other organs that may occur when an anterior access artificial disc is inserted from the front, shortening the surgical time, preventing dislodgment of the artificial disc, and improving the surgical prognosis. The artificial disc is inserted between two adjacent vertebrae and includes an upper plate contacting an upper vertebra, a lower plate contacting a lower vertebra, and an inserter inserted between the upper plate and the lower plate to allow the upper plate to rotate by a set angle with respect to the lower plate, and an upper wing portion and a lower wing portion are formed on the upper plate and the lower plate.

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.

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.

A spinal implant device includes a unitary strand extending from a first end to a second end. The unitary strand includes an exterior surface defining an infill volume with an infill structure. The exterior surface extends from the first end to the second end. A first bead is formed in the strand has a first diameter. The second bead is formed in the strand has a second diameter. At least one joint is formed in the strand between the first bead and the second bead. The at least one joint has a third diameter that is less than the first diameter and less than the second diameter.

A bone fixation system comprises a first fastener configured to anchor into a first vertebrae, a second fastener configured to anchor into a second vertebrae, and a set screw to retain the second fastener to the first fastener. The first fastener includes a shaft extending along a longitudinal axis and a head. The shaft includes a first cylindrical body. The head of the first fastener includes a second cylindrical body defining a passageway having an interior surface. The passageway defines a longitudinal axis that is different than the longitudinal axis of the shaft. The first cylindrical body of the shaft and the second cylindrical body of the head are angled relative to each other. A head of the second fastener is configured to engage the interior surface of the passageway of the head of the first fastener. The set screw retains the head of the second fastener in the passageway.