60 results about "Intervertebral space" patented technology

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).

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.

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.

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.

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.

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.

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.

One embodiment of the present invention is an interbody fixation device to be inserted into an intervertebral space between an upper vertebral body and a lower vertebral body. The interbody fixation device includes a plurality of independent elastic members each having a pair of upper and lower contact surfaces configured to be in contact with the endplates of the upper and lower vertebral bodies. Each of the plurality of elastic members has elasticity between the pair of upper and lower contact surfaces. When the vertebral endplates above and below an intervertebral disc space in which the interbody fixation device is implanted are partially fractured (damaged), an elastic member in contact with the fractured part sinks, while propagation of sinking to the other elastic members is suppressed, thereby ensuring stable retention. This makes it possible to provide an interbody fixation device that can be stably retained after implantation, even in cases in which vertebral body bones constituting the intervertebral disc space are fragile due to osteoporosis or the like.

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 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 contain an articulating mechanism to allow expansion and angular adjustment, and enable upper and lower plate components to glide smoothly relative to one another. The cages may have a first, insertion configuration characterized by a reduced size at each of their insertion ends to facilitate insertion through a narrow access passage and into the intervertebral space. In their second, expanded configuration, the cages are able to maintain the proper disc height and stabilize the spine by restoring sagittal balance and alignment. The intervertebral cages are able to adjust the angle of lordosis, and can accommodate larger lodortic angles in their second, expanded configuration. Further, these cages may promote fusion to further enhance spine stability by immobilizing the adjacent vertebral bodies.

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.

This invention discloses a geometric parameter calibration method for an X-ray imaging system, relating to the field of medical imaging equipment technology. This invention significantly improves the adaptability of portable X-ray equipment in scenarios involving rapid switching between pets of various sizes through an anatomical feature-driven parameter self-calibration mechanism. Utilizing the inherent proportional relationships of mammalian skeletons, such as the ratio of intervertebral space to rib width, geometric parameter calibration is completed in a single exposure, eliminating reliance on traditional physical calibration modules and avoiding proportional distortion of reconstructed images due to size differences. For live respiratory motion, respiratory frequency components are separated in the frequency domain of the projection data, and displacement errors are dynamically corrected through reverse compensation, effectively suppressing motion artifacts without the need for external control equipment. For the edge distortion problem of low-cost detectors, a polynomial distortion model is constructed based on the symmetry of 180° projection, combined with a robust iterative optimization algorithm, to automatically complete calibration during initial power-on or periodic scans.

This invention discloses a method for generating a scoliosis image detection model, specifically relating to the fields of medical image processing and deep learning. The invention includes: Step 1, constructing a mixed training set of high-quality and low-quality images, generating a dual-channel enhanced image through brightness equalization and contrast stretching, inputting it into a lightweight convolutional fusion network to learn bone edge fusion weights, and outputting a detail-enhanced image; Step 2, constructing a structure-prior-guided segmentation network, using U-Net as the base encoder, introducing a spatial attention module, and using the vertebral centroid to fit the spinal centerline to generate a Gaussian heatmap as a prior channel, which is then concatenated with deep features and enhanced through a prior attention mechanism, outputting the segmentation results of the vertebral body and intervertebral space; Step 3, constructing a Cobb angle regression network based on geometric constraints. This invention effectively improves the accuracy and robustness of scoliosis detection in low-quality clinical images.

The present application relates to the technical field of orthopedic surgery, more specifically to a drilling and bone scraping device used in the transpedicular approach and a method for using the same; the method is: verifying the puncture position under fluoroscopy during the operation; connecting the inclined angle connector in the operating room, gradually expanding the bone channel by adjusting the drilling and bone scraping device; using the drilling and bone scraping device with different angles to reach the intervertebral space through the bone channel, and preferentially scraping off the hardened bone; controlling the drilling and bone scraping device and the drilling guard frame to align the position for drilling or scraping the bone channel; blocking the foreign matter around the drilling position by the drilling guard frame, recycling the bone debris during the drilling process, and completing the drilling of the bone channel; placing the funnel designed into the target intervertebral space through the bone channel, and knocking the bone graft material into the intervertebral space; the present application solves the problem of being unable to automatically punch at a specified angle and depth during the transpedicular approach.

The invention provides an adjustable spinal internal fixation system, and belongs to the technical field of medical instruments. The invention provides an adjustable spine internal fixing system which comprises two sets of fixing assemblies, a first lifting connecting rod set, a second lifting connecting rod set and a pushing piece, and the two sets of fixing assemblies are arranged on two sets of vertically adjacent vertebral bodies respectively; each fixing assembly comprises two sets of pedicle screws and two sets of angle adjusting pieces; the first lifting connecting rod group and the second lifting connecting rod group are arranged between the two groups of cones; the second lifting connecting rod set and the first lifting connecting rod set are arranged in a crossed mode. The pushing piece is transversely connected to the middle of the first lifting connecting rod set and the middle of the second lifting connecting rod set and used for pushing the first lifting connecting rod set and the second lifting connecting rod set to swing so that the cross angle of the first lifting connecting rod set and the second lifting connecting rod set can be changed, and the intervertebral space can be expanded. After the adjustable internal fixation system for the spine is implanted, the intervertebral space is expanded according to actual conditions.

An expandable interbody spacer that is delivered in the anterior approach with adjustable height and end plate angulation (lordosis). The expandable interbody spacer is configured to have an initial collapsed state having a first height suitable for being inserted into an intervertebral space defined by a pair of adjacent vertebrae, and an expanded state having a second height that is greater than the first height. The expandable interbody spacer may be expanded from the initial collapsed state to the expanded state in-situ. The expanded state increases the distance between the adjacent vertebrae and provides support to the adjacent vertebrae while bone fusion occurs and also provides rigid support between the adjacent vertebrae that withstands compressive forces.

This invention relates to a prosthesis for implantation into the intervertebral space of the cervical spine. Specifically, this invention discloses an intervertebral fusion device, comprising: a fusion body having two end faces and a bone graft window penetrating the two end faces, the fusion body being implanted into the intervertebral space with its two end faces facing the endplates of the two vertebrae respectively; a bone plate having through holes located at the upper and lower parts respectively, the bone plate being arranged on the anterior side of the cervical spine and spanning the two vertebrae defining the intervertebral space, the upper and lower through holes being opposite to the two vertebrae respectively; bone screws, which are screwed into the vertebrae through the upper and lower through holes of the bone plate to fix the bone plate to the two vertebrae respectively; and a linear component having a proximal end and a distal end, the proximal end of the linear component being attached to the middle part of the bone plate, and the distal end of the linear component extending into the intervertebral space and attached to the anterior side of the fusion body to limit the displacement of the fusion body and maintain the fusion body in the middle region of the intervertebral space.

The invention relates to the field of traditional Chinese medicines, and particularly provides a traditional Chinese medicine composition for treating kidney deficiency and phlegm stasis type lumbar intervertebral disc protrusion, a preparation and application. The traditional Chinese medicine composition is prepared from the following components: schizophragma integrifolium, rhizoma dioscoreae nipponicae, herba pyrolae, cortex acanthopanacis, ground beetle, leech, rhizoma cyperi, rhizoma arisaematis, stiff silkworm, radix ranunculi ternati, antler, dog bone, astragalus membranaceus, angelica sinensis, radix paeoniae alba, sargentgloryvine stem, spina gleditsiae and liquorice. The traditional Chinese medicine composition formula has the multiple effects of promoting blood circulation to arrest pain, relaxing tendons and activating collaterals, promoting qi circulation and reducing phlegm, tonifying kidney and strengthening essence, strengthening tendons and bones and the like, LDH is treated in a multi-target and multi-channel mode, blood circulation of the waist is improved, metabolism is promoted, and therefore the degree of lumbocrural pain is relieved, and the lumbar vertebra function is enhanced. The traction relieves the intervertebral disc pressure by enlarging the width of the lumbar intervertebral space, relieves the nerve root pressure, and further improves the symptoms such as pain and numbness of the waist and the legs. Therefore, the application of the combined therapy disclosed by the invention can more effectively relieve the waist and leg pain degree and dysfunction of the patient.

An intervertebral fusion device 10 is disclosed. The intervertebral fusion device 10 comprises at least one endplate 40, 70 and a core component 20. The at least one endplate 40, 70 is configured to be received in an intervertebral space between first and second vertebrae. Each at least one endplate 40, 70 comprises first and second endplate parts which are coupled to each other to allow the first and second endplate parts to move apart to thereby increase a perimeter of the endplate. The core component 20 is configured to inter-engage with each at least one endplate 40, 70. The core component 20 is unitary. As the core component 20 is progressively brought into inter-engagement with the at least one endplate 40, 70, the core component bears against the first and second endplate parts to push the first and second endplate parts progressively apart.

In accordance with at least one aspect of this disclosure, a disc replacement implant includes, a first endplate configured to engage a vertebral endplate of a first vertebra adjacent an intervertebral space, a second endplate configured to engage a vertebral endplate of a second vertebra opposite the first end plate in the intervertebral space, a core between the first and second endplates, and an annulus surrounding the core and connecting a perimeter of the first endplate to a perimeter of the second end plate. In embodiments, the annulus can include a portion that extends inwardly between the first and second core plates to the spacer.

The invention relates to the technical field of ultrasonic image processing, in particular to an anesthesia puncture auxiliary positioning method based on artificial intelligence. The method comprises the steps of firstly extracting a resistance factor of sound wave transmission of a pixel point; further capturing an accumulated deflection angle of each historical frame relative to the current frame based on an optical flow algorithm, and then constructing a time-space aligned resistance data volume; a corrected resistance diagram is further obtained, and a sound wave arrival accumulated resistance diagram and a minimum resistance track are extracted; further projecting the minimum resistance track back to each time slice in the resistance data body, and obtaining an instantaneous total resistance sequence of each deep pixel point; further acquiring a resistance-angle change gradient according to data fluctuation in the instantaneous total resistance sequence in combination with distribution of accumulated deflection angles; and finally, according to the sound wave arrival accumulated resistance diagram, the resistance-angle change gradient and the instantaneous total resistance sequence, distinguishing real intervertebral space and artifacts in the low-signal-to-noise-ratio ultrasonic image, and generating reliable positioning and guiding prompt information.

The invention relates to an interbody fusion device, comprising: a fusion cage assembly comprising a fusion body and a fixing clamp, one end of the fixing clamp being connected with the fusion body, the other end of the fixing clamp being inserted into an interbody bone surface; and the holding and driving assembly is configured to be capable of assembling the fusion cage assembly to the intervertebral space.

The application discloses a lumbar vertebrae tractor for treating bone injuries in traditional Chinese medicine, and relates to the technical field of lumbar vertebrae tractors, a lumbar vertebrae tractor for treating bone injuries in traditional Chinese medicine, which comprises a bed frame main beam, a pelvis lower limb section fixing bed plate and a head and chest section fixing bed plate are respectively arranged on the upper part of the bed frame main beam through support cross beams at the front and rear end positions, slide rails are fixedly arranged on the two sides of the bed frame main beam, a traction assembly is arranged on the upper part of the bed frame main beam, and the traction assembly comprises a thoracic side traction unit and a pelvis side traction unit; through the traction assembly, traction pulleys, follow-up fixed pulleys, guide fixed pulleys and a driving assembly, the traction force is coaxially loaded along the physiological force line of the lumbar vertebrae at all times, traction damage caused by the deviation of the force line due to the change of the body position is avoided, the intervertebral space distraction efficiency is improved, the treatment specification of clinical lumbar vertebrae traction is met, the traction force can be adjusted according to the patient, and the risk of insufficient traction force or over-traction is avoided.