9 results about "Intervertebral space" patented technology

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.

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.

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 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 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.

An intervertebral fusion device is disclosed. The intervertebral fusion device comprises a superior component 40, an inferior component 60 and a core component 10. The superior component 40 has a superior component top side and a superior component bottom side and is configured to be received in an intervertebral space between first and second vertebrae whereby the superior component top side abuts against the first vertebra. The inferior component 60 has an inferior component top side and an inferior component bottom side and is configured to be received in the intervertebral space whereby the inferior component bottom side abuts against the second vertebra. The superior component bottom side and the inferior component top side oppose each other when the superior and inferior components 40, 60 are received in the intervertebral space. The core component 10 is configured for insertion between the superior and inferior components 40, 60 whereby a separation between the superior and inferior components is determined. The core component 10 comprises a retention mechanism which moves between a contracted condition and an expanded condition. The core component 10 is insertable between the superior and inferior components 40, 60 when the retention mechanism is in the contracted condition. The retention mechanism inter-engages with the superior component 40 and the inferior component 60 when in the expanded condition and when the core component 10 is received between the superior and inferior components to thereby present resistance to movement of the core component from between the superior and inferior components.

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 present application belongs to the technical field of medical devices, and provides a guide assembly for a superior articular process approach of a lumbar vertebra and an operation method thereof. The guide assembly comprises a guide rail, a guide needle, a bone removal assembly and a working assembly. The guide rail is provided with a guide track. The guide needle is slidably arranged in the guide rail and is used to establish an initial positioning path to the intervertebral space. The initial positioning path is parallel to the guide track. The guide rail is adapted to move along the initial positioning path. The bone removal assembly is detachably connected to the guide rail to remove bone mass of the superior articular process approach and form a bone window. The working assembly comprises a working sleeve which is adapted to be connected to the guide rail to form a working channel after the bone removal assembly is removed. The guide needle establishes the initial positioning path to the intervertebral space to confirm the position of the guide rail, reduces the number of repeated verification and adjustment under fluoroscopy, and thus reduces the radiation exposure dose of the patient. The bone removal assembly and the working assembly connected to the guide rail can be performed according to the guide track, and the possibility of path loss is reduced.