87 results about "Spinal canal" patented technology

The invention belongs to the technical field of medical image processing, and particularly relates to an automatic positioning and typing method for cervical posterior longitudinal ligament ossification, which is characterized in that ossification focus spatial distribution characteristics of CT images and spinal cord morphological parameters of MRI images are synchronously analyzed based on CT and MRI images, a vertebral body-ossification-spinal cord spatial relationship is explicitly modeled through anatomical structure topological constraint, and a cervical vertebra-ossification-spinal cord spatial relationship is obtained. Diffuse calcification artifacts, heterogeneity signal interference and multi-modal data registration deviation are overcome, accurate positioning and typing diagnosis of the ossification are achieved, multi-dimensional feature fusion analysis is achieved, the limitation of traditional single iconography index diagnosis is broken through, space continuity and clinical parameters are integrated through a hybrid classifier, and the accuracy of diagnosis is improved. The accuracy and robustness of typing judgment are improved, a structured diagnosis report is automatically generated in the whole process, and the clinical decision-making efficiency and the standardization level are remarkably improved; the principle is scientific and reliable, and the ossification continuity index, the spinal canal invasion rate and the spinal cord compression grading parameters are automatically calculated according to the typing standard.

Systems, devices, and methods for performing minimally invasive spinal procedures are described herein. The systems, devices, and methods may be used to percutaneously access the spinal canal and perform a spinal procedure in multiple locations along the canal, e.g., bilaterally and / or at multiple levels from a single access point. The systems and devices may integrate various instruments for performing the procedures, thus improving their ease of use, reducing procedural complexity, and minimizing procedure time.

Systems, methods, and computer-readable storage media for measuring spinal canal volume in vertebrates, and more specifically to using Artificial Intelligence (AI) to predict how surgical options will affect spinal canal volume. A system configured as disclosed herein can receive two or more pre-operation medical images capturing at least one functional spinal unit, then calculate an initial spinal canal regional volume using the pre-operation medical images for at least a portion of the at least one functional spinal unit. The system can then calculate, using a neural network, a predicted spinal canal regional volume for at least a portion of the at least one functional spinal unit undergoing various spine surgery options separately, resulting in predicted spinal canal regional volumes corresponding to the plurality of spine surgery options. The system or a surgeon can then select, using that data, one or more of the spine surgery options.

The invention relates to the technical field of intraoperative intelligent monitoring, and particularly discloses a spinal canal debonding method and system for real-time state evaluation, and the method comprises the steps: collecting neural structure microcirculation blood flow data in real time through integrating a micro-sensing unit at a working end part of a surgical instrument, and extracting blood flow oscillation frequency and capillary hematocrit parameters; performing multi-scale signal decomposition on the blood flow oscillation frequency to obtain an energy distribution parameter, and performing dynamic mode recognition on the hematocrit data to obtain a main variation characteristic value; fusing the two characteristic parameters to generate a nervous tissue vitality index; inputting the index into a pre-trained neural network for time sequence feature analysis, and outputting a graded ischemia risk early warning signal; the operation rhythm is automatically adjusted through a decision tree control mechanism based on the early warning signal, and self-adaptive regulation and control according to the state of the nervous tissue are achieved; the technical problem that the risk of neural ischemia cannot be monitored in real time in a traditional spinal canal release operation is solved, and occult nerve injury caused by asymptomatic neural ischemia can be prevented.

A method and suture anchor for treatment of spinal stenosis. The method includes the steps of cutting off a muscle origin or insertion from a spinous process, cutting off the spinous process at the transition to the lamina arcus vertebrae, at least partial resection of the lamina arcus vertebrae and thereby decompression of the spinal cord within the foramen vertebral, performing osteosynthesis of the spinous process, and placing a suture anchor within the spinous process and reattaching the muscle origin or insertion to the spinous process. Further methods for spine stabilization are provided wherein suture anchors are used to implement a tension band wiring. Further methods for reduction of unwanted effects after spinal treatment are provided.

The present invention relates to a split steel plate end-fixed and embracing spinal canal shaping internal fixation device, comprising a straight-edge steel plate and a beveled steel plate distributed on the left and right sides of the spinous process, wherein the straight-edge steel plate has a decompression groove straight edge extending from one side close to the spinous process, a straight-edge guide rail in contact with the spinous process is provided on the outer side of the decompression groove straight edge, and a plurality of positioning screws are provided on the straight-edge steel plate; the beveled steel plate has a decompression groove bevel extending from one side close to the spinous process, a beveled guide rail in contact with the spinous process is provided on the outer side of the beveled steel plate, and a plurality of positioning screws are provided on the beveled steel plate. Thus, the reliability of use and coordination can be effectively improved, the difficulty of use can be reduced, and the labor intensity of medical staff can be reduced. The overall structure is simple and easy to manufacture. A corresponding accommodating cavity can be added to achieve drug delivery, further reducing the number of operating steps.

The invention discloses an intra-spinal anesthesia catheter device with a temperature compensation function, and relates to the technical field of medical instruments. The intra-spinal anesthesia catheter device comprises an anesthesia catheter body, the anesthesia catheter body comprises a thermoplastic elastomer and a shape memory polymer, and the thermoplastic elastomer wraps the outer side of the shape memory polymer. The intraspinal anesthesia catheter has the beneficial effects that through combination of an innovative intelligent material system and an active closed-loop control technology, the traditional contradiction that the rigid requirement and the soft safety of the catheter cannot be achieved at the same time in intraspinal anesthesia is fundamentally solved. The method has the primary advantage that the dynamic programmable adjustment of the mechanical property of the catheter is realized.

The present disclosure generally relates to systems and methods of use for draining cerebrospinal fluid (CSF) from a brain or a spinal canal in a subject, for example, to treat hydrocephalus or other conditions. In some embodiments, the disclosure relates to a device comprising a flow controller positioned within a conduit that allows CSF to flow through the conduit from a first end to a second end. This may allow the CSF to drain, for example, from an intradural space (such as a thecal sac) into, for example, a paraspinal space, paraspinal vein or other venous space, or peritoneal cavity. A variety of methods may be used to hold or anchor the device in place, for example, an expansion apparatus. In some embodiments, the device can be implanted percutaneously at a location along or within a subject's spinal column, thus reducing the need for surgery, general anesthesia, and hospitalizations.

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 present invention pertains to a stenosis evaluation method implemented by a processor, comprising the steps of: acquiring a medical image by photographing the spine of an individual; dividing a region for evaluating spinal stenosis in the medical image by using a division model trained to divide the region for evaluating spinal stenosis by using the medical image as an input; and calculating, on the basis of the divided region, the size of a section in which spinal stenosis of the individual can be evaluated.

A guiding device for endoscopic spinal puncture includes a base with adhesive paper at its bottom end, a support plate on top of the base (the support plate is an isosceles triangle), two symmetrically arranged support blocks fixed to the top of the base, and the lower end of the support plate rotatably mounted on the support blocks via a pivot. An L-shaped baffle is fixed to one side of the support plate, with a claw at its bottom end. A corresponding slot is formed at the top of the base. The base is cylindrical, and its diameter is equal to the height of the support plate. This invention has a simple structure and is easy to use.

The invention discloses a method for constructing a lumbar spinal stenosis animal model, which comprises the following steps of: fixing an experimental rabbit at a prone position, and then forming a 2-3cm incision in the back side of the waist along the longitudinal direction so as to completely expose an intervertebral plate window between a first lumbar vertebra and a second lumbar vertebra; a disposable venous indwelling needle is used for puncturing the ligamentum flavum at the interlaminal window and then puncturing the disposable venous indwelling needle into the spinal canal, and then a metal needle core of the venous indwelling needle is pulled out, so that the soft catheter part of the venous indwelling needle is indwelled in the spinal canal; uniformly mixing PMMA bone cement powder and liquid to prepare fluid bone cement, extracting the bone cement by using an injector, slowly injecting the bone cement into the spinal canal, and removing the soft catheter after injection is completed; the injected bone cement is adhered to the inner wall of the spinal canal after being solidified, so that the inner diameter and the volume of the spinal canal are reduced in physical space, compression on spinal nerves is formed, and the animal model with lumbar spinal stenosis is obtained. The problem that in the preparation process of an animal model, nerves are prone to being damaged, and research test requirements cannot be met is solved.

Provided are a method and system for navigation in intraspinal puncture based on mixed reality technology. The method comprises: step S1: receiving a click operation on a skin surface (10) in a three-dimensional image to give a collision point (a), wherein the three-dimensional image is formed by three-dimensional reconstruction based on mixed reality technology; step S2: generating a ray from the collision point (a) to a target point (b) in the spinal canal in the three-dimensional image, and detecting whether the ray collides with a bone (20) or a blood vessel before reaching the target point (b), and when it is detected that the ray does not collide with the bone (20) or the blood vessel before reaching the target point (b), determining that the collision point is an optimal needle insertion point; and S3: when the optimal needle insertion point is present, generating a visual navigation path from the optimal needle insertion point to the target point. The method and system provide a fast, real-time, accurate, and minimally invasive navigation scheme for intraspinal puncture.

The present invention relates to a demonstration device and method for ossification of the posterior longitudinal ligament of the cervical spine, comprising a housing and a demonstration model disposed within the housing; the demonstration model comprises a cervical spine, a power source, a power mechanism, a storage chamber, and two or more ossification cavities, wherein a first ossification cavity is disposed within the first spinal canal and extends in a first direction, and a second ossification cavity is disposed within the second spinal canal and extends in a second direction; a first power unit is connected to the first ossification cavity via a first pipe and is used to inject an ossification medium from the storage chamber into the first ossification cavity; a second power unit is connected to the second ossification cavity via a second pipe and is used to inject an ossification medium from the storage chamber into the second ossification cavity. Unlike existing technologies, the present invention can realistically demonstrate the pathological process of ossification of the posterior longitudinal ligament of the cervical spine.

The utility model belongs to the technical field of puncture auxiliary equipment, and particularly relates to a body position auxiliary positioning device which comprises a furling structure and a calibration lamp located on the front portion of the furling structure, two connecting ropes are fixedly connected to the interior of the furling structure, and positioning buckles are fixedly connected to the tail ends of the two connecting ropes. When spinal canal puncture body position auxiliary operation is carried out, two devices can be used and fixed to the positions of shoulder blades and caudal vertebrae of the back of a patient respectively, and the furling structures in the two devices are fixed to the position of the spine of the patient through mucilage glue. Then the two positioning buckles are pulled at the same time and adsorbed to the skin of the back of the patient to be fixed, finally, the calibration lamps are turned on, light rays emitted by the calibration lamps in the two devices are converged to form a body position standard to complete body position calibration, and meanwhile the body position calibration is completed. The gradienter water bag arranged in the positioning buckle can calibrate the vertical body position when the patient lies on the side, so that the body position of the patient approaches the standard body position, and follow-up puncture operation is facilitated.

Various embodiments of a spinal shield having a shield body including a plurality of lateral extensions configured to be positioned over an exposed spinal canal for establishing a protective barrier around the contents of the exposed spinal canal are disclosed.

The invention discloses a fixing and lifting assembly for spinal canal stenosis surgery, which comprises two rotary fixing clamps arranged at an interval, each rotary fixing clamp is provided with a fixing clamp male head and a fixing clamp female head which are rotatably connected, and connecting rods are arranged in the fixing clamp male heads of the two rotary fixing clamps in a penetrating manner; the connecting rod is anchored through a plurality of pedicle screws implanted into the target cone; a lifting fixing clamp provided with a lifting fixing male head and a lifting fixing female head which are rotationally connected is arranged between the two rotary fixing clamps, and a through hole connected with a lifting screw is formed in the lifting fixing male head; lifting nuts in threaded connection with the lifting screws are arranged on the lifting fixing female head and located on the two sides of the through hole. Transverse connecting rods are arranged on the two fixing clamp female heads and the lifting fixing male head in a penetrating mode at the same time to form a transverse supporting structure. The lifting operation method of the fixed lifting assembly for the spinal stenosis operation is applied to lifting operation of the fixed lifting assembly for the spinal stenosis operation, and has the advantages of being minimally invasive, high in stability, flexible to adjust and fast in postoperative recovery.

Compositions for the treatment of acute manifestations because of oxidative injury by reactive oxygen species (ROS) and chronic development of fibrosis are provided. Compositions of the present invention include perfluorocarbon, hydrogen and oxygen gas, N-acetylcysteine, and glycine to counter robust oxidative responses unleashed following injury from both mechanical and non-mechanical conditions. Methods are also disclosed for delivery to challenging locations (olfactory cleft, spinal canal) and in hostile conditions (post trauma brain, spine, and upper and lower airways), with the invention's products "calming" inflamed tissue by neutralizing ROS in both acute and later complications. Active pharmaceutical ingredient(s) can also be employed to provide both acute and chronic benefit, and such active ingredients themselves can be augmented by the composition, enabling increased drug uptake and oxygenation. The present invention provides broad relief in many conditions for both human and companion subjects.

The utility model relates to a displacement reduction device for a fracture block in a spinal canal. The displacement reduction device comprises a holding part, a first connecting rod, a second connecting rod and a reduction part, the reduction part comprises a correction rod, a reduction rod and an epidural mater protection rod; the middle of the reset rod is an arc bent section, and two ends are linear sections. One surface of the correcting rod is connected with the end part of the second connecting rod; the linear section end part of one end of the resetting rod is connected with the correcting rod; the convex surface of the arc bent section of the reset rod faces the holding part; the end part of the linear section at the other end of the reset rod is connected with the dura mater protection rod; and the dura mater protection rod faces the direction of the holding part. The arc bent section of the reduction rod is more attached to an irregular fracture block, and meanwhile the correction rod can better support and stabilize the fracture block to be reduced in the operation process and prevent the fracture block from deviating and rolling. By arranging the dura mater protection rod on the reduction rod, when the fracture block is reduced, the compression of the spinal cord is directly relieved, the dura mater, the spinal cord and nerves can be prevented from being damaged, and iatrogenic secondary injury to a patient is avoided.

The invention discloses a spinal canal puncture needle progress recognition method and a puncture system.The method comprises the steps that puncture real-time data are obtained firstly, standardized puncture real-time data are obtained through filtering and normalization processing, a time sequence is generated through time step division, then a pre-trained puncture progress recognition model is called to recognize the time sequence, and a puncture progress recognition result is obtained; and outputting a corresponding puncture state recognition result. Through standardization processing and time sequence conversion of puncture real-time data (such as force signals), automatic identification of a tissue layer where a needle head is located is achieved in combination with a pre-training model, dependence on doctor experience and subjective judgment is avoided, and complications caused by misjudgment are effectively reduced. Meanwhile, the puncture progress can be dynamically tracked through cooperation of real-time data processing and model recognition, and the accuracy and safety of puncture operation are further guaranteed.

A spinal shield establishes a protective barrier around an exposed spinal canal during a surgical procedure. The spinal shield includes a shield body having a plurality of lateral extensions configured to be positioned over the exposed spinal canal, where each of the plurality of lateral extensions includes a hinge that permits rotation of the plurality of laterally extending legs in only a downward direction. The shield body can define a curved configuration or a substantially planar configuration. Further, the spinal shield can include a handle portion that extends outwardly in perpendicular relation to the shield body.

The invention provides a body position device for intraspinal anesthesia, and belongs to the technical field of medical instruments. Comprising a holding cylinder, a first avoiding cavity is formed in the holding cylinder, first sliding grooves are symmetrically formed in the two sides of the first sliding cavity, a second sliding groove is formed in the outer wall of one end of the holding cylinder, a first avoiding groove is formed in the outer wall, close to one end, of the holding cylinder, and two fixing columns are fixedly connected to the inner wall, close to the first avoiding groove, of the holding cylinder; the auxiliary assembly is used for assisting the patient to place the fixed body position, and the auxiliary assembly is connected with the holding cylinder. By arranging the auxiliary assembly, medical staff can be assisted to turn over a patient before anesthesia, the device is supported after the patient turns over, the situation that the body position is changed due to maloperation of the patient and the operation of an anesthetist is affected is avoided, and the body position requirement needed by the anesthetist during an operation can be rapidly met.

The present invention discloses a cervical vertebra open-door fixing device, which belongs to the technical field of orthopedic implants. The cervical vertebra open-door fixing device comprises a tubular body, the interior of the tubular body is used as a bone grafting cavity, the tubular body has a curvature and a first bayonet for clamping the lateral mass end and a second bayonet for clamping the spinous process end are formed at both ends, respectively, and the second bayonet is a plug-in bayonet. The cervical vertebra open-door fixing device of the present invention has good bending resistance, strong ability to maintain the spinal canal structure, and good bone fusion effect by forming bayonet ports at both ends of the tubular body to clamp and connect the lateral mass end and the spinous process end. The present invention is suitable for laminoplasty.

Systems, devices, and methods for performing minimally invasive spinal procedures are described herein. The systems, devices, and methods may be used to percutaneously access the spinal canal and perform a spinal procedure. The systems and devices may integrate various instruments for performing the procedures, thus improving their ease of use, reducing procedural complexity, and minimizing procedure time.

The present invention discloses a posterior lumbar zero-profile fusion system and a method for using the same. The fusion system includes a fusion device and an impactor; the impactor includes a connecting seat, which is detachably connected to the fusion device; at least two inclined locking holes are provided on the front side of the fusion device; the axial height of the connecting seat is more than 1.5 cm; the connecting seat is provided with at least two inclined through-channels, and the outlet end of each channel corresponds to a locking hole; the angle between the channel axis and the connecting seat axis is 30 to 35 degrees. According to the present invention, it is only necessary to retract nerve tissues such as nerve roots and dura mater sacs once, and after the fusion device is placed between vertebrae by the impactor, the connecting seat is not directly removed. In the process of screwing in the locking screw, the locking screw and the screwdriver are completely in the connecting seat and the fusion device, and do not contact the surrounding nerve tissue to avoid damaging the surrounding nerve tissue of the vertebrae. Only one posterior spinal canal incision is required, which can greatly reduce surgical costs, surgical risks, surgical trauma and surgical time.

The invention discloses an artificial ligamentum flavum complex which comprises an artificial ligament and two fixing seats, and the two ends of the artificial ligament are fixedly connected with the two fixing seats respectively. Screw holes are formed in the two fixing seats, the two fixing seats are fixedly connected with the spine by installing screws into the respective screw holes, and the bone contact surfaces at the bottoms of the two fixing seats are provided with micropore structures. When the artificial ligamentum flavum complex is installed on the spine, the artificial ligamentum flavum complex can replace the cut ligamentum flavum to maintain the mechanical stability of the spine and cover the dura mater to reduce postoperative dura mater scars. Therefore, the artificial ligamentum flavum complex can replace ligamentum flavum removed in the operation, improve the stability of the spine of a patient, reduce postoperative spine instability, protect spinal canal duramater and nerves, reduce scar adhesion and improve the postoperative clinical effect.

The invention relates to the field of medical auxiliary instruments, in particular to a spinal endoscopic dura mater retraction device which comprises a puncture component, and the puncture component is used for percutaneous puncture to the position close to a spinal canal dura mater; a suspension part is arranged in the puncture part, and the suspension part is used for extending out of the puncture part and being connected with the cut edge of the dura mater. An operation part is further arranged on the puncture part, and the operation part is used for adjusting the retraction force applied to the dural mater by the suspension part; by controlling the operation part, the suspension part is fixed and retracts the dura mater to expose the spinal cord tissue. Through the integration of puncture, suspension and operation components, the traction of the dura mater under the minimally invasive condition of the spine endoscope is realized.

The application provides a spine screw placement preoperative planning quality control method, an electronic device and a computer storage medium. By constructing boundary models of key risk objects such as pedicle cortex, spinal canal, intervertebral foramen and superior articular facet joint surface, combining preoperative screw placement planning data to calculate quantitative indicators such as minimum safety distance, predicted breaking amount and breaking direction, and inputting structured feature vectors and local image features of the planning channel into a risk assessment model to output risk assessment results, the safety hazards of screw placement can be accurately identified for complex cases such as pedicle morphology variation, degeneration or deformity. At the same time, the deficiencies of the existing planning system, such as the lack of quantitative quality control and grading early warning mechanism, can be made up. High-risk planning schemes can be prompted in time, and objective basis for path correction can be provided, so as to improve the accuracy, safety and standardization of spine screw placement preoperative planning.

Embodiments include example systems, methods, and computer-accessible mediums for analysis and visualization of data associated with anatomical images. In some embodiments the anatomical images can be spinal images used for assessment of stenosis and disc degeneration. In some embodiments, systems, devices, and methods described herein include selecting a region of interest (ROI) in a three-dimensional (3D) volume of image data of a plurality of vertebra of a spine, identifying one or more anatomical parts in the ROI, determining one or more parameters of the one or more anatomical parts, and assessing a severity of a spinal deformity based on the one or more parameters.