279 results about "Vertebral bone" patented technology

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.

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 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 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 method of providing a guidance device for guiding a bone removal instrument for the removal of bone from a cervical vertebra and providing a vertebral body replacement device for placement into a void in a cervical spine between two endplates of a single vertebra during the course of an anterior spinal surgical procedure upon the cervical spine wherein the vertebral body replacement device has been given a PLR product code from the Food and Drug Administration (FDA).

A unique, universal Zero-Profile Expandable Intervertebral Spacer (ZP-EIS) device for fusion and distraction throughout the entire spine is provided which can be inserted via anterior, anterolateral, lateral, far lateral or posterior surgical approaches dependent on the need and preference. Multiple ZP-EIS embodiments each with unique mechanisms of calibrated expansion are provided. Two of these embodiments incorporate bi-directional fixating transvertebral (BDFT) screws and five other embodiments do not incorporate BDFT screws. A tool for implantation into the intervertebral device and calibrated device expansion is also disclosed.

Described herein are various implementations of systems and methods for treating back pain (e.g., chronic low back pain) caused by different (e.g., independent) sources of pain, such as pain originating or stemming from intervertebral discs, from vertebral endplates, and / or from intraosseous locations within one or more vertebral bodies. For example, methods for treating back pain (e.g., chronic low back pain) may involve both vertebral fusion (e.g., arthrodesis or spondylodesis to fuse adjacent vertebrae) and neuromodulation (for example, ablation of nerves within or surrounding one or more of the adjacent vertebrae). The neuromodulation may facilitate treatment of pain that is generated by insertion of fusion hardware.

The invention relates to a spinal degenerative disease grading early warning and rehabilitation management system and method, and belongs to the technical field of medical equipment. The system comprises a system control module, a first-stage detection module, a second-stage detection module, a third-stage detection module, a data processing module, an evaluation module and a rehabilitation management module. The first-stage detection module is used for acquiring foot pressure distribution data of a patient; the secondary detection module collects electromyographic signal data of muscles around the spine of the patient; the third-stage detection module is used for collecting vertebral bone mineral density data of the patient. The data processing module is used for preprocessing and analyzing the collected data; the evaluation module is used for carrying out grading evaluation on the spinal degenerative lesion; and the rehabilitation management module formulates a personalized rehabilitation scheme according to the evaluation result. The system adopts a logic mechanism of hierarchical detection and hierarchical intervention, automatically adjusts intervention measures according to different evaluation indexes, and realizes accurate rehabilitation management. The risk of spinal degenerative diseases is found in an early stage, a targeted rehabilitation scheme is provided, and spinal diseases are effectively prevented and managed.

The utility model relates to a bone grafting instrument. The bone grafting instrument comprises a handle, an extension tube, a sealing cover and a storage bin for placing broken bones, the front end of the handle protrudes from back to front to form a protruding part, the extension pipe is communicated with the protruding part, and the sealing cover is in threaded connection with the end, away from the extension pipe, of the handle. According to the bone grafting instrument, through the mechanical structure of the pushing rod and the pushing plate, broken bones can be rapidly and effectively pushed to the position between adjacent vertebrae from the storage bin, the operation efficiency is greatly improved, the operation time and discomfort of a patient are reduced, the top plate and the closing assembly are used in cooperation, the broken bones can be accurately controlled to be released in the pushing process, and the bone grafting effect is improved. Compared with the prior art, excessive scattering or blocking of broken bones is avoided, the accuracy and the success rate of an operation are guaranteed, in addition, the storage bin is closed through the closing assembly, the broken bones are effectively prevented from leaking in the pushing process, the clean and sterile state of an operation area is kept, and the infection risk is reduced.

A spinal fixation system for use in securing a spinal rod to a vertebra using a lockable bone screw connector. The connector is configured to be movably connected to the head of a bone screw, and a spinal rod can then be used to physically connect a first vertebra to a second vertebra. The spinal fixation system includes a tool grasping the connector by a locking and / or unlocking instrument that can allow the connector to lock to the bone, screw by moving a collet, while the connector can still move along the spinal rod until locked into place by a set screw. The connector can be selectively unlocked from the bone screw for adjustment or removal.

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.

Provided is a system that is capable of easily placing an interbody spacer accurately in a predetermined position between vertebral bodies using the PLIF procedure, even in a narrow surgical field. The system has an interbody spacer including a pair of contact surfaces to be in contact with vertebral bodies, a ventral surface which is a side surface on a ventral side having a convex shape in plan view and which connects the pair of contact surfaces on the ventral side, a ventral groove formed along the curved direction on the ventral surface, and an interbody spacer engagement portion having a radius of curvature smaller than a radius of curvature of the ventral surface, formed on a bottom surface of the ventral groove. The system has a guiding tool for guiding the interbody spacer to a predetermined position between the vertebral bodies, the guiding tool including a guide rail to be fitted into the interbody spacer engagement portion on a distal end side, a handle portion to be grasped by the surgeon outside the patient's body on a proximal end side, and a guide rail engagement portion on a distal side of the guide rail having a radius of curvature in plan view which is the same as the radius of curvature of the interbody spacer engagement portion in plan view.

CT images from the neck, lung, cardiac, abdominal, pelvis, hip, spine or lower extremity areas are obtained and analyzed by a computer to measure trabecular bone density on each level it is available, in the spine and hip. Any bone tissue associated with vertebrae that is fractured is excluded, along with Schmorl's nodes, large blood vessels, and cortical bone, to accurately average the trabecular bone density on a scan. The density of fat, heart, and muscle tissue of a subject is used to calibrate the results. That data may be input to an absolute fracture risk model (Fracture Risk Algorithm calculator). Information such as bone density, T score, Z score, fracture risk, and identification of vertebral fractures (if present) may be determined and reported.

An expandable prosthetic implant for engagement between vertebrae includes a first member having a first end, a second end, a plurality of extensions and a hollow interior portion extending from the first end to the second end, wherein the plurality of extensions extend from the first end to the second end. A second member includes a first end, a second end, a hollow interior portion extending from the first end to the second end, and a plurality of extensions extending from the second end to the first end. The plurality extensions of the first member are configured to coaxially interdigitate with the second member, and the plurality of extensions of the second member are configured to coaxially interdigitate with the first member. The first member of the implant is moveable relative to the second member along a longitudinal axis.

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.

An implant that is implantable between vertebrae includes a monolithic body with a first end and a second end opposite the first end, an outer surface extending axially from the first end to the second end, a plurality of teeth at the first end, each of the teeth extending axially away from the second end to a free end, and an abutment surface facing away from the second end that is positioned radially inwardly relative to at least one of the teeth. The abutment surface is recessed axially relative to the free ends of the teeth to an extent such that the abutment surface is configured to contact a vertebra when the implant is implanted. The monolithic body is configured to extend axially over a majority of an entire axial length of the implant.

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.

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body extending from an upper surface to a lower surface. The body has a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear walls such that an internal chamber is defined within the front and rear ends and the first and second walls. The body defines an outer perimeter and an inner perimeter extending about the internal chamber. At least one of the side walls is defined by an integral porous structure.

The invention relates to the technical field of poultry determination, and provides a vertebra body size character determination method and device.The method comprises the steps that a three-dimensional CT image of poultry is obtained, and the three-dimensional CT image is segmented into a plurality of two-dimensional cross section images along the Z axis; wherein each two-dimensional cross section image is divided into a corresponding Z-axis index number; for each two-dimensional cross section image, obtaining a target two-dimensional cross section image marked with a target vertebra detection frame by using a target vertebra detection model; and determining the body size character of a target vertebra according to the target vertebra detection frame and the Z-axis index number of the target two-dimensional cross section image. According to the method, through combination of three-dimensional CT imaging layering processing and the Z-axis index number, accurate association between the two-dimensional image and the three-dimensional space position is established, and through combination of accurate positioning of the target vertebra detection model, the accuracy of vertebra body size character measurement of a lossless living body is improved.

The invention relates to a system comprising an anterior cervical plate (10) with receiving openings (12) for bone screws and a locking mechanism for inserted bone screws that are screwed to a vertebral body and press the cervical plate against the vertebral body. The locking mechanism has a plate-like locking body which is moveably held on the cervical plate and can be moved from a position in which it leaves a receiving opening as freely accessible as possible into a locking position in which the screw head lying in the receiving opening is covered by the locking body and thus the migration of the screw out of the cervical plate is prevented. In order to provide maximum flexibility in the design of the cervical plate while maintaining a high degree of security against loosening of the bone screws and being easy to operate, the locking body is formed by a thin disc (16) which is fixed to the anterior cervical plate so as to be rotatable about an axis of rotation substantially perpendicular to the cervical plate (10) and which has, angularly distributed over the circumference, at least one locking arm (18-1, 18-2) and a support portion (20) lying in the disc plane, which snaps into a catch position via a rotation of the disc (16) about a predetermined angle of rotation (WD), and can be removed again via a counter-rotation of the disc (16).

A device for augmenting a vertebra. The device includes an expandable implant and a pedicle anchor. The pedicle anchor includes at least one anchoring element movably coupled to an anchor body. An actuator is movable within the anchor body to deploy the anchoring element into engagement with a vertebral pedicle. The anchoring element may be deployed in a same plane as a tissue support ski of the expandable implant. The actuator may be a rod including a knuckle or a cam. The tissue support ski may be recessed from an outer profile of the device. Struts of the expandable implant may be angled towards the tissue support ski in an insertion configuration. The device may be oval-shaped and provide means for rotating the expandable implant relative to the pedicle anchor, and for blocking the expandable implant in a predetermined orientation. Methods of deploying the device are also disclosed.

A pedicle-lengthening implant may comprise an outer screw body configured to be inserted through a pedicle of a vertebra. The outer body has an upper portion and a lower portion. An inner bolt is disposed within the outer screw body, defining a longitudinal axis and configured to interact with each of the upper and the lower portions. Rotation of the inner bolt about the longitudinal axis causes the upper and lower portions of the outer screw body to separate axially along the longitudinal axis. The outer body may comprise external threads configured to engage bone of the pedicle. The inner bolt includes a threaded rod that engages first internal threads of the upper portion and internal threads of the lower portion at an inner bore of the outer screw body. The first internal threads of the upper portion and internal threads of the lower portion may have opposite thread directions.

The invention relates to a vertebral stabilization device comprising at least two screws having a first section engageable in the vertebra and a second threaded section separated by a flange, at least one first connecting rod for connecting the second section of the screws, and at least one second connecting rod for connecting the second section of the screws, and at least a first fixing assembly and a second fixing assembly for fastening the rod to the screw. Each securing assembly includes at least one gripper arranged to grip the first rod and a nut. The gripper includes a first jaw and a second jaw that are identical and held together by a resilient member. According to one variation of the invention, the device may include a third securing assembly having at least one gripper having a first jaw and a third jaw having an inner surface identical to the first jaw inner surface and an outer surface complementary to the second jaw outer surface.

The invention relates to the technical field of medical materials, and discloses composite bone cement, which is prepared from the following components in percentage by mass: 40 to 60 percent of polymethyl methacrylate, 5 to 15 percent of calcium phosphate bone cement and the balance of bridging microspheres, and the total mass of the polymethyl methacrylate accounts for 40 to 60 percent of the total mass of the bridging microspheres accounts for 5 to 15 percent of the total mass of the calcium phosphate bone cement; the bridging microsphere is of a core-shell structure, the core is a phase-change material hydrogel microsphere, and the shell is a porous bioglass layer; according to the phase change material hydrogel microspheres, gelatin-sodium alginate hydrogel serves as a matrix, and tridecanol is wrapped to serve as a phase change material; the porous bioglass layer of the bridged microspheres is mesoporous bioglass, and the aperture of the mesoporous bioglass is 5-15 nm. The bone tissue can be prevented from being thermally damaged by polymethyl methacrylate during polymerization, the elastic modulus is improved, and the adjacent vertebral fracture risk is reduced.

The present invention relates to a system and a method for planning veterinary orthopedic surgery, for restoring volume and / or geometry of a bone, by expansion of at least one expandable bone implant (1) between a folded configuration and a deployed configuration, the implant comprising a body extending along a longitudinal axis (L) between a proximal end (11) connectable to an implantation instrument (A) for holding the implant and a distal end (12) intended to be inserted first into the bone, wherein the system comprises a plurality of expandable bone implants (1) and at least one implantation instrument (A) corresponding to each of the implants (1) and at least one planning support presenting the implants (1) and instrument (A), with reference to at least one standardized classification of the various types of fractures identified, in particular vertebral compression fractures, the planning support being capable of being implemented in the form of a human-machine interface.

The invention relates to an implant for connecting adjacent vertebrae, comprising a front side, a back side opposite the front side in the thickness direction of the implant, at least two through-openings extending longitudinally between the front side and the back side and designed to receive a fastening screw, and at least one bending section that is plastically deformable under the influence of a bending tool on the implant in order to intraoperatively adapt a longitudinal curvature of the implant extending along a longitudinal axis of the implant, wherein the bending section has at least one tool receiving groove that is recessed in the thickness direction into the front side or the back side and extends longitudinally along a transverse axis of the implant, and wherein the at least one tool receiving groove is designed to receive an working section of the bending tool.

This utility model relates to medicine and can be used in neurosurgery. It is used as a means of accessing the intervertebral disc between the 5th lumbar and 1st sacral vertebrae at a 90-degree angle for laser vaporization. The utility model achieves the following technical results: 1. A minimally invasive, minimally invasive approach to the intervertebral disc at the L5-S1 level. 2. Allows to improve the effectiveness of treatment and achieve maximum pain relief in polysegmental lesions of intervertebral discs 3. Prior to this utility model, attempts were made to perform laser vaporization of the disc at the L5-S1 vertebral body level from anatomically inconvenient locations, which was accompanied by a long time interval, prolonged pain for the patient, the end of the electrode was not in the center of the nucleus pulposus, sometimes even on the cortical layer of the vertebral bodies, as a result of which the maximum effect of vaporization was not obtained, or aseptic inflammation of the bone tissue of the vertebrae was obtained. This utility model eliminates the above-mentioned issues, reducing vaporization time. The essence of this utility model is that, using this trocar and drilling stylet, we provide direct access to the L5-S1 intervertebral disc. Laser vaporization of this disc has not previously been performed due to its anatomical limitations.

A bone fusion device provides stability to bones during a bone fusion period. The bones include, for example, the vertebrae of a spinal column. The bone fusion device comprises one or more extendable tabs attached to the bone fusion device by associated rotating means. The bone fusion device is preferably inserted by using an arthroscopic surgical procedure. During arthroscopic insertion of the device, the tabs are pre-configured for compactness. In this compact configuration, the tabs are preferably deposed along and / or within an exterior surface of the bone fusion device. After the bone fusion device has been positioned between the bones, one or more tab(s) are extended. In the preferred embodiment, the position of each tab is related to a positioning element and extending blocks. Typically, the tabs advantageously position and brace the bone fusion device in the confined space between the bones until the bones have fused.

A holding element positions back parts or parts thereof of poultry carcasses having a neck side, a hip side, a body exterior side, and a body interior side, wherein the back part has a spinal column or parts thereof and a rib structure having at least vertebral rib pairs or parts thereof. The back part has a region, on the exterior side of the body relative to the rib structure, that has back-flesh. The holding element includes a holding device with at least one controllable clamping element. The at least one clamping element is configured and adapted to releasably fix the back part at least in some regions on the holding device by non-positive and / or positive locking engagement with the body interior side.

The application relates to the technical field of medical devices, and provides a minimally invasive nerve interface system, which comprises a plurality of micro bone implants implanted in target bone tissues, a wearable component and a nerve regulation system; the wearable component comprises a plurality of wearable units; the micro bone implants are implanted in micro channels constructed in the target bone tissues; the target bone tissues at least include skull and vertebrae; the wearable units are connected with the nerve regulation system and controlled by the nerve regulation system, the wearable units are wirelessly connected with the micro bone implants; the nerve regulation system is used for forwarding control instructions to the micro bone implants via the wearable units, controlling the micro bone implants to emit regulation signals, and / or receiving physiological signals collected by the micro bone implants and forwarded via the wearable units. The minimally invasive nerve interface system provided by the application can effectively reduce the influence of the bone tissues on signal collection and transmission, and avoid the invasiveness and risks of invasive operation.