149 results about "Intervertebral space" patented technology

The invention discloses a CT image segmentation method for spine surgery, and relates to the technical field of medical image processing, and the method comprises the steps: obtaining a spine CT image of a patient, and carrying out the preprocessing of the spine CT image; adopting a centrum gap detection method to detect a centrum gap region of a spine in the preprocessed CT image, and performing automatic segmentation on each centrum based on centrum gap region information to obtain a preliminary segmentation result of the centrum; extracting local texture features of the intervertebral disc and the nerve root in the intervertebral space area, and classifying the local texture features through a classifier to generate a preliminary segmentation result of the intervertebral disc and the nerve root; performing rigid registration and non-rigid registration on the initial segmentation results of the vertebral body, the intervertebral disc and the nerve root and the standard three-dimensional model, and identifying an abnormal region in segmentation; by extracting local texture features of the intervertebral disc and the nerve root and combining a support vector machine classifier, accurate segmentation of various structures can be realized.

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.

A system and method for planning and simulating a surgical operation to create a patient-specific spinal implant are disclosed. The system comprises a remote server configured to receive patient-specific medical image data and generate a 3D mesh model of the patient's spine using algorithms that separate vertebral bodies, remove artifacts, and smooth surfaces. A doctor's computer receives the 3D mesh model and allows real-time manipulation of intervertebral spaces to achieve a desired spinal curvature. The server generates a spinal implant design with surface-mapped endplates matching the patient's vertebral anatomy, which is transmitted to a 3D printer for manufacturing. The method includes steps of receiving image data, generating and updating the 3D mesh model based on doctor input, generating the final implant design, and transmitting it for production. The invention enables the creation of patient-specific spinal implants with improved conformity and surgical outcomes.

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.

The invention provides a deep learning-based spine interbody fusion detection method, apparatus and device, and a computer readable storage medium. The method comprises the following steps: acquiring spine medical image data; preprocessing the medical image data to generate standardized input image data; inputting the preprocessed input image data into a pre-trained deep learning model, and analyzing local and global structural features of a vertebral body and an intervertebral space by the deep learning model through multi-layer convolution, pooling and activation function operation; based on an output result of the deep learning model, classifying fusion states of the vertebral body and the intervertebral space, and identifying whether fusion occurs or not; scoring the fusion degree of different intervertebral spaces to generate a fusion evaluation report; and visually displaying the detection result. According to the embodiment of the invention, spine interbody fusion detection can be more accurately carried out.

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).

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 belongs to the field of interbody fusion cages in medical instruments, and particularly discloses an expansion type interbody fusion cage applied to minimally invasive spine surgery, which comprises a front-end extrusion block, an internal thread column is connected to the rear part of the front-end extrusion block, and the upper and lower surfaces of the front-end extrusion block are in contact with the inner sides of the front ends of an upper support plate and a lower support plate respectively; upper side edge plates are hinged to the two sides of the upper supporting plate, lower side edge plates are hinged to the two sides of the lower supporting plate, a limiting block is installed on the lower supporting plate, a connecting sliding block is installed below the upper supporting plate, and rear end extrusion blocks which are the same as the front end extrusion blocks in shape and symmetrical in position are installed on the inner sides of the rear ends of the upper supporting plate and the lower supporting plate. An adjusting hole is formed in the center of the rear end extrusion block, a hexagon socket screw is installed in the adjusting hole, a sliding hole is formed in the upper supporting plate, and an oblique nail is installed in the sliding hole. The contact area between the fusion cage and the intervertebral space can be increased, the stability of the fusion cage is improved, and the purposes of recovering the intervertebral space height and expanding the intervertebral foramen are achieved.

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.

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.

The invention provides an intelligent assessment method, system and device for screening multiple diseases of lumbar vertebra based on deep learning and a computer readable storage medium. The lumbar vertebra multi-disease screening intelligent evaluation method based on deep learning comprises the following steps: acquiring a lumbar vertebra normal position X-ray image and a lumbar vertebra lateral position X-ray image; inputting the lumbar vertebra normal position X-ray image and the lumbar vertebra lateral position X-ray image into a preset lumbar vertebra multi-disease disease diagnosis model, and outputting a lumbar vertebra multi-disease disease diagnosis result; wherein the diagnosis results of the multiple diseases of the lumbar vertebra comprise lumbar spondylolisthesis, degenerative lumbar spondylolisthesis, lumbar degeneration and lumbar vertebra fracture; the lumbar degeneration comprises intervertebral space change and osteophyte; the lumbar fracture comprises compression fracture, burst fracture and comminuted fracture. According to the embodiment of the invention, the accuracy of diagnosis of multiple diseases of the lumbar vertebra can be improved.

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).

An intervertebral fusion device comprises an endplate, a core component and at least one ratchet. Each of the endplate and the core component has a leading end and a trailing end and is configured to be received in an intervertebral space defined between first and second vertebrae. The ratchet comprises a pawl and a linear rack defining plural recesses. The pawl is comprised in the core component or the endplate and the linear rack is comprised in the other of the core component and the endplate. The core component and the endplate are configured to engage with each other by disposing the leading end of the core component adjacent the trailing end of the endplate and then moving the core component relative to the endplate in a direction of insertion such that the leading end of the core component moves towards the leading end of the endplate and extent of overlap of the core component and the endplate increases. The plural recesses of the linear rack extend in the direction of insertion and from near or at one of the leading end and the trailing end of the other of the core component and the endplate towards the other of the leading end and the trailing end of the other of the core component and the endplate. The plural recesses extends by no more than 60% of a distance between the leading end and the trailing end. The ratchet is configured such that the pawl starts to inter-engage with the plural recesses of the linear rack as the core component is moved further relative to the endplate in the direction of insertion and such that the pawl progresses along the plural recesses with further movement of the core component until the core component and the endplate have a desired extent of overlap.

The present invention relates to a method for determining the disc incision depth of posterior lumbar interbody fusion, comprising the following steps: (1) Selecting patients with lumbar degenerative diseases who have undergone X-ray examination and plain CT scan of lumbar intervertebral discs as samples; (2) Removing unqualified samples; (3) Taking anteroposterior and lateral X-rays of the lumbar spine with the patient standing, and performing tomographic scanning with the patient lying flat; (4) Measuring the lengths of the lower edges of the L3 (the third lumbar vertebra), L4 (the fourth lumbar vertebra), and L5 (the fifth lumbar vertebra) vertebral bodies in the X-ray films as the X-ray depths of the L3 / 4, L4 / 5, and L5 / S1 intervertebral spaces; (5) Performing statistical analysis using SPSS 18.0 software and making a table of the analysis results; (6) Obtaining the warning value of the disc incision depth based on the data results. This method provides the warning value of the insertion depth of the nucleus pulposus forceps for medical staff performing posterior lumbar interbody fusion, improving the safety and success rate of interbody fusion.

This invention relates to a novel P-approach endoscopic lumbar fusion surgery method, belonging to the field of lumbar fusion surgery technology. This method addresses the high risk of nerve injury and insufficient operational precision in existing endoscopic fusion techniques by proposing an improved solution. It utilizes Kirschner wires for positioning at the inferior articular process to establish a precise entry point avoiding the nerve root pathway; a visually guided circular saw is used throughout the endoscopic procedure to construct a safe triangular working channel directly reaching the spinal canal; under full endoscopic monitoring, a unilateral approach is used for bilateral spinal canal decompression, thoroughly removing diseased tissue and scraping the endplates until punctate bleeding occurs; a bone graft cannula with a curved tip is used to precisely implant the fusion device into the anterior region of the intervertebral space, restoring intervertebral height through a self-locking structure; finally, a universal pedicle screw is percutaneously implanted for fixation. This method reduces the risk of nerve injury, improves surgical safety and efficiency, and is suitable for patients with lumbar spondylolisthesis complicated by spinal stenosis.

The utility model provides an anti-sputtering intervertebral bone grafting device suite with a cover, and belongs to the technical field of medical instruments. Comprising a bone grafting funnel and a bone grafting rod, a handle is installed outside an expansion part, the bone grafting rod is installed in a funnel handle, a push plate is installed on the outer surface of the bone grafting rod, the expansion part is installed on the outer surface of the funnel handle, a metal cover is installed on the outer surface of the bone grafting rod, a groove is formed in the metal cover, the bone grafting rod is installed in the groove, and a positioning groove is formed in the metal cover. And the expansion part is fixed in the positioning groove. According to the bone grafting funnel, the metal cover is arranged, the bone grafting rod is installed in the groove formed in the metal cover, when the bone grafting rod is inserted into the bone grafting funnel, the metal cover can naturally slide down to cover the opening in the top end of the expansion part, the top end of the expansion part is fixed in the positioning groove, and when a hammer is used for knocking, blood splashed from the intervertebral space can be blocked by the metal cover; the blood of a patient suffering from infectious diseases is isolated, and the wound pollution risk caused by the fact that the blood splashes out of the wound and then falls back is avoided.

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.

The utility model relates to the field of medical instruments, and discloses a working cannula for cervical endoscopic surgery, which comprises a cannula main body provided with a through hole, a first opening of the cannula main body is obliquely arranged, one side, close to a second opening of the cannula main body, of the first opening is defined as a first side, and one side, far away from the second opening, of the first opening is defined as a second side; the sleeve main body is provided with a limiting thread above the first opening, and the limiting thread is matched with the limiting ring to adjust and control the working depth of the sleeve main body; the limiting threads are arranged and matched with the limiting ring, so that the movement of the cannula body can be well limited, the depth of the cannula placed in the intervertebral space is controlled and stabilized during operation, the situation that the cannula body is too deep to penetrate the rear wall of the intervertebral disc and damage the spinal cord is avoided, the operation risk is reduced, and related complications of spinal cord injury are reduced.

The invention discloses an expansion type interbody fusion cage applied to a minimally invasive spine surgery, and relates to the technical field of medical instruments, the expansion type interbody fusion cage applied to the minimally invasive spine surgery comprises a fixing frame, an adjustable clamping assembly is rotatably arranged on the inner wall of the fixing frame and used for supporting and fixing the intervertebral space of a patient, and the clamping assembly is used for clamping the intervertebral space of the patient; the stability of the vertebral body is improved; adjusting assemblies capable of sliding are arranged at the two ends of the fixing frame and used for adjusting the height of the clamping assemblies so that the clamping assemblies can be matched with the vertebral gap of the patient. According to the expansion type interbody fusion cage applied to the minimally invasive spine surgery, the rotating frame, the fixing column and the conical nails are matched with one another, the two conical nails are used for adjustment, the interbody fusion cage can be matched with a vertebral body gap of a patient, and therefore the practicability and flexibility of the interbody fusion cage are greatly improved.

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.

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.

Disclosed are interbody fusion spacers, or cages, for insertion between adjacent vertebrae. The cages may have integrated and deployable anchors that allow the cage to have a first, insertion configuration characterized by a reduced size to facilitate insertion through a narrow access passage and into the intervertebral space. Once implanted, the anchors of the cages may be deployed to enable better fixation to bone. The cages may promote fusion to further enhance spine stability by immobilizing the adjacent vertebral bodies.

A system for performing interbody fusion surgery including an expandable intervertebral spacer and specialized instruments for choosing the correct size of implant, implanting the device within the intervertebral space, and for delivery of bone graft or bone substitute to the interior of the implant.

The invention discloses a cervical and lumbar curvature traction method which comprises the following steps: a preparation stage: a patient lies flat on a bed surface of a traction bed, and the neck of the patient is put on a neck bracket of the traction bed and is matched with a neck sheath on one side of the neck bracket to restrain the head of the patient; the lumbar vertebra of the patient corresponds to the waist bracket of the traction bed and is positioned above the waist bracket; cervical vertebra curvature traction: adjusting the cervical vertebra of the patient to a normal physiological curvature by adjusting the height of a neck bracket, and then pushing the head of the patient by using a neck sheath to perform cervical vertebra traction; and lumbar vertebra curvature traction: lifting the waist bracket to support the waist of the patient, adjusting the lumbar vertebra of the patient to a normal physiological curvature, and then performing lumbar vertebra traction by pulling the legs of the patient. During traction, the cervical vertebra and the lumbar vertebra are adjusted to the normal physiological curvature, the cervical vertebra and lumbar vertebra gap is expanded according to the physiological curvature, then traction is conducted, the intervertebral space is evenly widened, and the defect of cervical vertebra traction in a traditional traction mode is overcome.

An expandable intervertebral implant is provided for insertion into an intervertebral space defined by adjacent vertebrae. The expandable intervertebral implant includes a pair of outer sleeve portions and an inner core disposed between the outer sleeve portions. Movement of the inner core relative to the outer sleeve portions causes the outers sleeve portions to deflect away from each other, thereby engaging the expandable intervertebral implant with the vertebrae and adjusting the height of the intervertebral space.

1. The name of the design product: intervertebral fusion cage. 2. The use of the design product: intervertebral fusion cage for fitting intervertebral space infection in spinal surgery, achieving the purpose of columnar bone fusion. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: reference drawing in use.

The bone grafting device comprises a bone grafting funnel and a push rod, the bone grafting funnel comprises a funnel storage bin and a bone grafting pipe, the bone grafting pipe communicated with the funnel storage bin is of an integrated transparent structure, the middle lower portion of the side wall of the bone grafting pipe is provided with a drainage hole and scale marks, and the lower end of the bone grafting pipe is provided with an object outlet. The diameter of the push rod is matched with the inner diameter of the bone grafting tube. The intervertebral space bone grafting tube is applied to the intervertebral space bone grafting process under a spine endoscope, bone grains can be preloaded into the bone grafting tube, the push rod is used for pushing and injecting the bone grains into the intervertebral space, the drainage hole of the bone grafting tube can prevent water from flowing back and overflowing during pushing and injecting, the scale marks can accurately grasp the insertion depth of the bone grafting tube and the bone grafting body amount, and the whole process is visual. The bone grafting funnel is made of disposable transparent materials and has the advantages of being low in use cost, visible in the whole process, safe to use and high in bone grafting efficiency.

Adjustable spinal devices, instruments for assessing and measuring the dimensions of an intervertebral space, and instruments for deploying the spinal devices are described. The spinal devices may comprise temporary trial devices or permanent spinal implants, and may be configured for placement between two vertebral bodies. A surgical instrument is described which comprises an elongate shaft having a proximal handle and a distal end portion, a first mating feature for securing the distal end portion of the shaft to the device and a second mating feature for engaging a translation member within the spinal fusion device. The instrument further comprises an adjustment device for moving the translation member to adjust an angle between upper and lower endplates of the device. The instrument may further comprise a third mating feature and a second adjustment device for adjusting a height of the 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 interior 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 a solid support structure and an integral porous structure, the porous structure extending from the outer perimeter to the inner perimeter. The porous structure embeds or encapsulates at least a portion of the solid support structure.

Machine learning and intelligent planning techniques are disclosed for fabricating spinal fusion plates and spinal cages that can be utilized as a system together to provide a precision guided anterior cervical discectomy and fusion (ACDF) surgery to a subject in need thereof. The spinal fusion plate provides adjustments of one or more vertebrae even after attaching the plate to the spine of the subject. The spinal fusion plate provides a surgical window or "postbox" for accessing the intervertebral space(s) of the subject, provides the postbox window for precision insertion of a spinal cage, provides a locking inset to prevent over-insertion of the spinal cage, and provides precision compression of the spinal cage after the insertion. Methods of treating subjects in need of a discectomy surgery are described herein utilizing the precision implants.