25 results about "Corpus vertebrae" patented technology

The invention relates to the field of medical image processing, and discloses a spine key point detection and morphological parameter calculation method and system based on a double-view-angle X-ray image. The method comprises the following steps of: acquiring positive and lateral X-ray image data and preprocessing the positive and lateral X-ray image data; constructing a key point detection model, wherein the key point detection model comprises a dual-view feature extraction backbone network, a positive and side structural feature interaction module and a key point detection decoder; acquiring spine key point coordinates through the model; fitting a spine center line based on the key point coordinates and obtaining a direction vector; and calculating a plurality of spinal morphological parameters. Wherein the structural feature interaction module is used for converting centrum height-related structural features into an adjacent matrix, and realizing positive and lateral structural feature interaction through a graph convolutional network, so that the structural features acquired at a view angle with relatively high visibility are used for optimizing structural feature learning at a view angle with relatively low visibility. The accuracy of key point positioning and centrum classification is improved, and more robust spinal morphological parameter calculation is realized.

The invention discloses a robot calibration method for spine endoscopic surgery, which comprises the following steps: S1, optical marking points are pasted on the skin or bony structure of a patient, the skin marking is used for fixing a reflective ball by using a medical adhesive tape, the bony marking is percutaneously implanted into a spinous process or crista iliaca through a titanium alloy bone nail, and at least six marking points are needed. According to the method, minimally invasive property and stability are both considered through a double marking strategy, six points cover three vertebral bodies to ensure the integrity of an anatomical range, registration errors caused by breathing / body position changes are reduced, meanwhile, non-rigid registration is combined with a B spline grid (10 mm) to consider calculation efficiency and spine physiological curvature adaptability, high-precision surface reconstruction is achieved through a Marching Cubes algorithm, and the method has the advantages of being high in precision and high in precision. An error suppression mechanism is formed by + / -0.25 mm precision and redundancy measurement (five times of sampling) of the optical tracking system, registration robustness is improved through SVD and ICP double-algorithm complementation, multi-constraint path planning is achieved through an A * algorithm and Monte Carlo simulation, and a 4 mm safety corridor provides a buffer space for instrument errors.

A magnetic compression anastomosis device comprises a first multipiece internal vertebrae support structure including a first set of magnets attached to an outward-facing side of the first multipiece internal vertebrae support structure; and a second multipiece internal vertebrae support structure including a second set of magnets attached to an outward-facing side of the second multipiece internal vertebrae support structure, wherein the first and second multipiece internal vertebrae support structures are attached together in a sandwich configuration with an inward-facing side of the first multipiece internal vertebrae support structure facing an inward-facing side of the second multipiece internal vertebrae support structure and the magnets on the outward-facing sides of the magnetic compression anastomosis device.

This invention discloses a spinal osteotomy path planning device, method, and system, belonging to the field of medical device technology. The spinal osteotomy planning device is capable of planning the osteotomy path for spinal osteotomy surgery, specifically including: an identification module, an acquisition module, and a determination module. The identification module is used to identify feature points of at least two vertebrae based on a spinal scan image of the target object. The acquisition module is used to obtain the size of the lesion based on a pathological image of the target object. The determination module is used to determine the osteotomy area on the vertebrae to be osteotomized based on the feature points and the size of the lesion.

The present disclosure provides a spinal fixation device, including a spinal fixation pedicle screw and an outer oval sheath. The spinal fixation device is provided with at least one locking structure and the outer oval sheath is locked to the spinal fixation pedicle screw through the at least one locking structure. The spinal fixation device can strengthen the stability of the spinal fixation pedicle screw for fixation after implantation in vertebrae during the spinal surgery.

An interbody spacer configured for implantation between spinal vertebrae. The interbody spacer including electrical circuitry within an electronics housing of the interbody spacer and a plurality of load sensors spaced apart on carriers of the interbody spacer. The plurality of load sensors electrically connectable to the electrical circuitry and configured to provide to the electrical circuitry a load signal indicative of a measurement of force exerted onto the plurality of load sensors of the interbody spacer. The interbody spacer further including a plurality of electrodes spaced apart on a surface of the interbody spacer. The plurality of electrodes electrically connectable to the electrical circuitry and configured to at least one of provide to the electrical circuitry an electrode signal indicative of an impedance measurement and generate an electrical field between at least two electrodes of the plurality of electrodes.

The invention provides a scoliosis biomechanical testing method, and belongs to the technical field of scoliosis testing, and the scoliosis biomechanical testing method comprises sheep spine bending and nail bar implantation. Sheep spine bending comprises the steps of cutting a sheep spine, fixing an end cover, connecting a translation tool and a clamping tool, driving a middle vertebral body of the sheep spine to move so as to bend the sheep spine, releasing an intervertebral disc with the maximum bending degree, filling denture powder for fixing, and turning segments above and below a lateral convex part of the sheep spine back to be vertical; nail and bar implanting comprises bone nail hole drilling, bone nail implanting and bar implanting. The sheep spine is selected to simulate the human spine, high similarity is achieved, human scoliosis is completely simulated through specific steps of bending and nail bar implantation, and biomechanical testing on human scoliosis is facilitated.

An interbody spacer configured for implantation between spinal vertebrae. The interbody spacer including electrical circuitry within an electronics housing of the interbody spacer and a plurality of load sensors spaced apart on carriers of the interbody spacer. The plurality of load sensors electrically connectable to the electrical circuitry and configured to provide to the electrical circuitry a load signal indicative of a measurement of force exerted onto the plurality of load sensors of the interbody spacer. The interbody spacer further including a plurality of electrodes spaced apart on a surface of the interbody spacer. The plurality of electrodes electrically connectable to the electrical circuitry and configured to at least one of provide to the electrical circuitry an electrode signal indicative of an impedance measurement and generate an electrical field between at least two electrodes of the plurality of electrodes.

Interbody fusion devices including deployable fixation members. The implant may include a spacer, optionally, an end member coupled to the spacer, and one or more fixation members configured to extend into adjacent vertebrae. The fixation members may include screws, nails, shims, tangs, spikes, staples, pins, blades, fins, or the like, and combinations thereof.

A corpectomy implant device having a solid portion, structural volume and porous end plates configured is disclosed. In some embodiments, the corpectomy device comprises a stochastic lattice structure in the structural volume of the device to reduce stiffness and improve radiolucency. In some embodiments, the porous endplates comprise a lattice configured to provide porosity for bone ingrowth. In some embodiments, endplates are configured to facilitate insertion of the implant between the adjacent vertebrae and to provide anchoring of the corpectomy device to and prevent migration of the device implant in an installed state.

This utility model discloses a depth-limiting sheath assembly for endoscopic-assisted anterior cervical surgery, comprising an outer sheath and an inner sheath, the inner sheath being inside the outer sheath. The outer sheath has a depth-limiting locking block at its tip, which, during operation, can be locked in front of the cervical vertebrae to limit the depth of the sheath and endoscope. One end of the outer sheath is fixedly connected to a receiving cavity, and a pressure block is disposed within the receiving cavity. One end of the pressure block is connected to the receiving cavity via a first spring, and the pressure block is slidably connected to the receiving cavity. This utility model provides a depth-limiting sheath assembly for endoscopic-assisted anterior cervical surgery, which, through the relative movement of the spring-loaded pressure block between the endoscope and the sheath, limits the depth and allows for relative adjustment of the endoscope's position, facilitating observation of the intervertebral discs.

The present invention provides an artificial cervical intervertebral disc barb fixation device. The device includes a first barb structure and at least one second barb structure arranged on the surface of the first barb structure. The second barb structure includes a fixing piece and a spur. The spur includes a vertically arranged needle and a plurality of groups of barb hooks. In the initial state, the top of the spur is protruding from the top of the fixing piece. A driving assembly is provided inside the fixing piece. When the top of the second barb structure is subjected to pressure, the driving assembly can drive the spur to move toward the outside of the fixing piece and make at least one group of barb hooks located outside the fixing piece. Therefore, after the prosthesis is implanted, under the tension of the tissue structure around the patient's cervical spine and the gravity of the cervical spine and head, the first barb structure and the second barb structure are pressed into the upper and lower vertebrae. Under the action of pressure, the spur moves outward and makes at least one group of barb hooks located outside the fixing piece to penetrate into the bone of the adjacent vertebrae to form barbs, thereby increasing the immediate stability with the bone tissue.

The utility model discloses a device for rotating an orthopedic track in scoliosis deformity surgery, which comprises two forceps arms hinged with each other, the two ends of each forceps arm are respectively a clamping end and a holding end, and the hinge point between the two forceps arms is positioned between the clamping end and the holding end of each forceps arm. The clamping end of each clamp arm is provided with two clamping arms capable of moving close to or away from each other. The utility model aims to provide the device for rotating the orthopedic track in the scoliosis deformity operation, and the device can enable two adjacent vertebral bodies with overlarge intervertebral space to move close to each other, so that the space between the two vertebral bodies is reduced to meet the requirement.

The invention discloses a frequency-enhanced multi-granularity context-based vertebral body segmentation method, and belongs to the fields of deep learning, computer vision and image segmentation. Comprising the following steps: firstly, collecting and dividing data, obtaining image data of CT and MRI of a vertebral body in a three-dimensional imaging mode, and dividing the image data into a training set and a test set; secondly, preprocessing, training and post-processing the image data; thirdly, training a network model, and training the multi-granularity context segmentation model based on frequency enhancement on the training set to obtain a segmentation model; and finally, testing the segmentation model effect. According to the method, the information loss is avoided by introducing the sampling operation under the wavelet transform, the low-frequency and high-frequency features are respectively strengthened, the accuracy and detail representation of the segmentation result can be improved, and important technical support is provided for precise medical treatment. According to the method, multi-granularity context information can be fused more effectively, image details are reserved, the segmentation precision is improved, and the method is suitable for various clinical application scenes.

The invention provides a non-radiative navigation method and device for an intraoperative robot. The method comprises the following steps: acquiring a spinal column three-dimensional model of an object; based on the spinal column three-dimensional model, determining spinal column operation planning information and guide plate planning information of all vertebral bodies to be provided with screws; a positioning pattern is planned on the guide plate; obtaining an intraoperative image after each vertebral body to be subjected to screw placement abuts against the guide plate, and performing registration on the spine three-dimensional model and the intraoperative vertebral body to be subjected to screw placement; and based on the registered three-dimensional model of the vertebral body to be subjected to screw placement and the spine, planning a surgical path of the surgical robot. According to the application, the guide plate of the vertebral body with the positioning pattern is planned, so that accurate positioning and navigation of the vertebral body are realized after the guide plate abuts against the vertebral body; therefore, on one hand, X-ray irradiation is not needed, and on the other hand, positioning precision is greatly improved.

A motion-preserving spinal implant is presented for placement within the intervertebral space for the total replacement of a degenerated spinal disc. The motion-preserving spinal implant has a pair of endplates sandwiched around an inner and an outer core, with the inner core positioned concentrically within the outer core. The outer core encapsulates the inner core and provides a proper seal while maintaining flexibility and elasticity to advantageously support physiological movements. The inner core is constructed of an elastomeric material and acts as a solid diaphragm to resist and withstand localized compression and other forces. The endplates provide anchorage and fusion with the adjacent vertebrae and maintain the inner and outer cores in place.The motion-preserving spinal implant restores normal height and natural function to the degenerated spinal disc and preserves natural spinal movement.

The application discloses a spine vertebra segmentation method based on frequency enhanced multi-granularity context, and belongs to the fields of deep learning, computer vision and image segmentation. The method comprises the following steps: firstly, collecting data and performing division to obtain image data of spine vertebra CT and MRI in a three-dimensional imaging mode, and dividing the image data into a training set and a test set; secondly, performing preprocessing, training and post-processing on the image data; thirdly, training a network model, training a frequency enhanced multi-granularity context segmentation model on the training set to obtain a segmentation model; and finally, testing the segmentation model effect. The application can avoid information loss by introducing a wavelet transform downsampling operation, and can enhance low-frequency and high-frequency features respectively, so that the accuracy and detail performance of a segmentation result can be improved, and important technical support can be provided for precision medicine. The application can more effectively fuse multi-granularity context information, retain image details and improve segmentation precision, and is suitable for various clinical application scenarios.

The invention discloses a cervical vertebra spinous process fixing device which comprises a first fixing plate and a second fixing plate, two first through holes are formed in the first fixing plate, two second through holes are formed in the second fixing plate, a locking rod is arranged between the first through holes and the second through holes in a penetrating mode, and positioning protrusions and sharp protrusions are arranged on the first fixing plate and the second fixing plate. The invention further discloses an operating device which comprises two operating rods hinged to each other, clamping plates are connected to the clamping ends of the two operating rods, positioning grooves, movable clamping arms and fixed clamping arms are arranged on the two clamping plates, and the movable clamping arms can be driven by a driving structure to get close to or get away from the fixed clamping arms. The invention further discloses a cervical vertebra spinous process fixing system comprising the cervical vertebra spinous process fixing device and an operation device. According to the cervical spine process fixing device, the operation device and the fixing system, spinous processes of three adjacent vertebral bodies of the cervical vertebra can be mutually fixed.

The invention discloses a device for rat caudal vertebra intervertebral disc degeneration. The device comprises a fixing unit and a loading unit. The fixing unit comprises two metal rings which are respectively fixed on adjacent vertebral bodies on the upper side and the lower side of a target intervertebral disc; at least two nails used for being implanted into a vertebral body are arranged on the circumference of the inner side of each metal ring; a plurality of hooks are arranged on the circumference of the outer side of each metal ring; the loading unit comprises at least two hook springs, and the two ends of the hook springs are detachably connected to the hooks at the specific positions of the upper metal ring and the lower metal ring. Through the combination of the angle of the hook and the rigidity of the spring, complex multi-dimensional mechanical loads borne by the spine in the physiological or pathological state can be simulated, the loads are not only pressure in the single direction and are closer to the actual stress condition of the intervertebral disc of the human body, the angle position of the hook is fixed, and the rigidity of the spring is known; this allows the applied load to be accurately calculated and repeated.

The present invention relates to the technical field of human spine measurement and analysis, and specifically to a personalized follow-up system based on postoperative physical sign data of patients with spinal brittle fractures. The present invention first obtains follow-up related data of target patients and historical patients through a data acquisition module; further analyzes the target patient's bone cement adaptability and the rehabilitation trend index at each follow-up in a recovery assessment module, and obtains the bone deformation recovery degree of each non-first follow-up; further sets the target patient's first preset number of follow-ups in a follow-up scheduling module; for each non-fixed follow-up, according to the changes in bone deformation recovery degree of the two most recent follow-ups and analyzing the urgency of the follow-up, adjust the preset follow-up interval to arrange the follow-up time. This solution dynamically evaluates the bone deformation recovery degree by fixing the early follow-up time, and combines the changes in bone density of the vertebrae adjacent to the lesion to accurately reflect the fracture recovery trend, thereby optimizing the subsequent follow-up arrangements and rehabilitation strategies, and improving the follow-up efficiency.

Image-guided navigation for spinal cord treatments and therapies are described. The image-guided navigation is augmented with anatomical measurement data related to spinal cord and vertebral anatomy. From these data and medical image data, an augmented model of spinal cord anatomy is generated and / or navigation data can be generated for localizing spinal cord structures, such as by mapping the anatomical measurement data to the medical image data. The augmented model data and / or navigation data can be used for surgical navigation, stimulation parameter setting, electrode configuration selection, pre-surgical planning, surgical visualization, and so on.

A method for installing an expandable interbody (intervertebral) spine implant with a two-piece medical instrument via an endoscope, the two-piece medical instrument having a handle assembly and a shaft assembly configured for extension through the endoscope, the shaft assembly holding an expandable interbody spine implant when the shaft assembly is fully received by a head of the handle assembly, and releasing the spine implant upon retraction of the shaft assembly from the head of the handle assembly. The shaft assembly has a rod with a longitudinal bore and a sleeve situated on the rod that axially moves relative to the rod in response to the reception into and retraction from the handle assembly head, with the sleeve controlling capture and release of the implant by the rod. The distal end of the rod has a clamp formed by jaws that flex to capture and release the implant.

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