262 results about "Vertebral pedicle" patented technology

The invention discloses a pedicle screw path planning method. The pedicle screw path planning method comprises the steps of S1, performing image segmentation on a spine structure model to obtain a 3D voxel map of a target vertebral body and a pedicle; s2, determining an initial screw radial direction and an initial screw radius by combining the 3D voxel maps of the target vertebral body and the vertebral pedicle; s3, optimizing the initial screw radial direction and the initial screw radius in combination with the vertebral pedicle point cloud to obtain a screw radial parameter and a screw radius parameter; s4, calculating coordinates of a screw inlet point and a screw outlet point of the pedicle screw based on the radial parameters of the screw in combination with the centroid coordinates of the pedicle; and S5, simulating the swinging range of the universal nail head based on the coordinates of the nail outlet point to judge whether the nail rod penetrates through all the pedicle screws on the same side or not, if so, determining a planned path, and if not, iteratively executing the steps S3 to S5 until the nail rod penetrates through all the pedicle screws on the same side. According to the scheme, the problems of low efficiency and low success rate of pedicle screw placement and rod penetration operations are solved.

Pedicle-based intradiscal fixation devices, systems, instruments, and methods thereof. The implant or a portion thereof may be composed of a shape-memory material, which has a curved shape-memory orientation and a temporarily straight orientation. The implant may be configured to be inserted into a pedicle of an inferior vertebra, through the vertebral body of the inferior vertebra, and into the vertebral body of the superior vertebra to thereby stabilize the inferior and superior vertebrae.

The invention discloses a spine parameter measurement and spine automatic typing method comprising the following steps: obtaining four spine original images of a to-be-detected target in different directions, preprocessing the spine original images, and sending the preprocessed spine original images into an image neural network to obtain key information in the images; and performing parameter measurement and analysis according to the key information to obtain various parameters. And calculating according to the lateral bending Cobb angle, the segment and the sagittal posterior convex angle to obtain a lateral bending type. And judging the relative position relationship between the sacrum perpendicular bisector CSVL and the vertebral pedicle mask to obtain the corrected type of the lumbar curvature. And judging according to the thoracic vertebra posterior lobe of the sagittal plane to obtain a thoracic vertebra sagittal plane correction type. And combining the lateral bending type, the waist bending correction type parting and the thoracic vertebra sagittal plane correction type to obtain a complete Lenke parting. Through automatic identification and automatic calculation, the popularization rate of spine radiation parameter measurement can be effectively improved without professional requirements and thresholds, and the method has very high clinical practical significance and popularization significance.

The utility model discloses a 3D printing porous pedicle screw which comprises a screw body part and a screw cap part, the screw body part comprises a cortical bone thread area close to one end of the screw cap part and a cancellous bone thread area far away from one end of the screw cap part, and a porous structure area is arranged at one end, not connected with the screw cap part, of the screw body part. The porous structure area comprises an inner core column extending in the axial direction of the nail body part, at least one reinforcing beam and a porous structure, the reinforcing beams extend outwards from the periphery of the inner core column, and the porous structure is annularly distributed on the outer periphery of the inner core column. The porous structure can efficiently induce bone tissue to grow in, the screw and a vertebral body are connected into a whole, stress is effectively dispersed, the stability of the screw is improved, the porous structure is arranged on the vertebral body at the front end of the screw, screw breakage caused by stress concentration of the screw in a vertebral pedicle area can be avoided, meanwhile, the stability of the screw can be better improved through the reinforcing beam, and the service life of the screw is prolonged. The possibility of fracture of a porous area of the screw is reduced, generalization performance is better, and the use experience feeling is improved.

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

The invention discloses a screw feeding device which is suitable for a pedicle screw. The screw feeding device comprises an implanting mechanism and a torque applying mechanism which are in transmission connection with a pedicle screw; the torque applying mechanism is configured to be in an engaged state and a disengaged state with the implanting mechanism; when the torque applying mechanism and the implantation mechanism are in a joint state, the torque applying mechanism can transmit torque to the implantation mechanism; and when the torque applying mechanism and the implanting mechanism are in a separated state, the torque applying mechanism is separated from the implanting mechanism, so that the torque is prevented from acting on the implanting mechanism in the exiting process of the torque applying mechanism, and the pedicle screw is prevented from loosening. According to the vertebral pedicle screw, the operation time can be shortened, the operation steps can be simplified, the cooperation among instruments can be optimized, the complex operation of a surgeon on the cooperation of the instruments can be reduced, the vertebral pedicle screw cannot be loosened, and bone cement can be rapidly placed at the same time, so that the possibility of bone cement leakage and embolism can be reduced.

The invention provides a pedicle screw planning method and system, and the method comprises the steps: obtaining a CBCT image data set of a spine, carrying out the spine marking and pedicle screw marking of the CBCT image data set, and obtaining a data set containing a spine mask and a pedicle screw mask; inputting the data set containing the spine mask and the pedicle screw mask into a multi-task learning neural network for training, generating a first spine mask and a first pedicle screw mask, and extracting space coordinates of a starting point and an ending point of the first pedicle screw mask; according to the space coordinates of the starting point and the ending point of the first vertebral pedicle screw mask and the first spine mask, the space coordinates of the starting point and the ending point of the vertebral pedicle screw and the length of the vertebral pedicle screw are calculated, the generated spine mask can provide an accurate spine boundary, and intelligent planning of the position and the length of the vertebral pedicle screw is achieved. Generation of a spine mask and automatic planning of a pedicle screw are completed through a neural network.

According to some embodiments, a method of accessing an intervertebral space of a patient's spine in a minimally invasive manner compromises creating a passage from a posterior end of a pedicle of a vertebral member using a probe, advancing the probe through the pedicle and to a main body portion of the vertebral member, advancing the probe through a superior endplate of the vertebral member and into the intervertebral space and enlarging the passage using at least one tap to create an enlarged passage from a posterior of the pedicle to the intervertebral space. In some embodiments, the enlarged passage traverses at least three cortical layers of the vertebral member.

The utility model provides a pedicle screw imbedding guide plate which comprises a holding part and at least two supporting arms which are connected to one end of the holding part and used for abutting against a pedicle of a vertebral arch, and an avoiding position used for avoiding spinous processes is arranged between every two adjacent supporting arms. The side, adjacent to the avoiding position, of at least one supporting arm is provided with a positioning assembly used for placement of a pedicle screw, and the positioning assembly comprises a positioning structure and a positioning channel penetrating through the positioning structure and used for placement of the pedicle screw. According to the pedicle screw positioning device, a positioning channel is formed in the pedicle screw, it is ensured that the pedicle screw can enter the pedicle at the optimal angle through the positioning channel, an operator can directly conduct screw implantation along the positioning channel through fixing of the supporting arm, pedicle screw implantation precision and operation efficiency are improved, meanwhile, dependence on image navigation in the operation process is reduced, and the operation efficiency is improved. Therefore, the safety and the effect of scoliosis orthopedic surgery are improved.

The invention discloses a vertebral pedicle screw path autonomous planning method and system based on a neural network, and belongs to the field of biomedicine volume data set segmentation and clinician interaction.The method comprises the steps that a spine ROI is extracted from a lumbar vertebra CT plain scanning and bone three-dimensional reconstruction image data bone window thin layer image sequence, and a data set is generated; a Bi-Conv-LSTM structure is introduced into a 3D-UNet model, an SIS-3D-UNet model is constructed, a data set is used for training, and a first segmentation planning model is generated and used for spine segmentation and pedicle screw planning. According to the method, less lumbar CT image data is utilized to enable the deep learning model to achieve the spine segmentation and pedicle screw planning effects satisfied by spine surgeons.

The invention provides an X-ray-based scoliosis 3D intelligent automatic diagnosis system, which is characterized in that a spine area bounding frame coordinate, a hip bone bounding frame coordinate and a vertebral pedicle bounding frame coordinate are extracted from spine coronal image data, and the first 17 results are extracted to be matched with the number and spatial distribution of typical vertebral bodies of a human body; the method comprises the following steps: obtaining a spine region sub-graph, a hip bone region sub-graph and a vertebral pedicle region sub-graph, converting the sub-graphs into tensors to obtain a bounding box, four angular point coordinates and corresponding confidence of each vertebral body, storing the bounding box, the four angular point coordinates and the corresponding confidence as a structured record, performing Cobb angle calculation according to the structured record, and converting the structured record into an anatomical segment identifier; cutting is conducted according to the spine area, the hip bone area and the vertebral pedicle area subgraph, segmented vertebral pedicles and hip bones are obtained, the major curvature type, the pelvis height and the rotation direction are judged according to anatomical segment identifiers, and the patient age is determined according to the midpoints of the upper edges and the lower edges of the vertebral bodies, the arrangement angle of the adjacent vertebral bodies, spine major curvature core parameters and the age of the patient. And outputting a scoliosis 3D intelligent automatic diagnosis result.

A surgical system (100) for adjusting a segment of a spinal column comprises: a rack arm (29) extending in a longitudinal direction from a first end (29A) to a second end (29B); and a sliding body portion (30) including a ratchet mechanism (31) selectively engageable with the spline portion (29S) of the rack arm. The system may include a first actuator (32) for translating the sliding body along the rack arm in a longitudinal direction. The system may include first and second connecting towers (10) extending along first and second axes, respectively, the first and second axes each being transverse to the longitudinal direction. The system may also include a second actuator (40) including a threaded screw for adjusting the first attachment tower along the first axis. In some embodiments, the second actuator is configured to raise and lower the first connection tower in a sagittal plane.

An intelligent puncture path planning method, a device, an equipment and a medium in a PVP operation. The method includes: intercepting a local CT image of a vertebral body from an image; identifying midpoint of the narrowest part of vertebral pedicle and a theoretical puncture injection stop-point from the local CT image through trained neural network model; calculating distance from the stop-point to the middle plane in front-back direction of the vertebral body, distance from the stop-point to the middle plane in left-right direction of the vertebral body and the closest distance from the stop-point to the cortical bone surface, taking the minimum value of distances as radius of a space sphere area with the stop-point as sphere center; taking a line connecting midpoint of the narrowest part of any vertebral pedicle and any point in the space sphere area as an optional puncture path of the vertebral pedicle.

Disclosed herein are novel pedicle fastener placement systems and methods for more controlled and precise fusion surgery, reducing the risks associated with spinal fixation procedures. The system includes a frame with a connected handle on one portion and connected to an insertion assembly on a second opposite end. The method includes the steps of conducting a pre-operative computed tomography scan of a patient's spine to determine an insertion point and an insertion route. The method further includes using the pedicle fastener placement system to insert a pedicle fastener at the predetermined insertion point on the pedicle, through the predetermined insertion route.

Provided is an internal fixation instrument that is inserted from the pedicle of a vertebral arch into bone cement with which a vertebral body has been filled in advance, and that can be easily removed while maintaining the same level of internal fixation performance as that of a screw. The internal fixation instrument is inserted from the pedicle of a vertebral arch into bone cement with which a vertebral body has been filled, and is provided with a cylindrical shaft and a connection part that is disposed at the distal end of the shaft and that can be connected to a screwdriver, the shaft having a helical groove on the proximal side thereof. More preferably, the internal fixation instrument has a screw thread on the distal end side of the shaft, and the lead of the screw thread and the lead of the groove are set to be equal to each other.

This invention discloses a guide plate device for spinal osteotomy and correction. Each first support member is fixed to the first guide plate body for connection with screws. The first guide plate body has a first window for locating the spinal laminectomy area. A rib resection groove is formed at the edge of the first window to determine the rib resection area. There are two rib resection grooves, arranged opposite each other on both sides of the first window. Each second support member is fixed to the second guide plate body for connection with screws. The second guide plate body has a second window for locating the pedicle osteotomy guide plate's resection area. There are two second windows, arranged opposite each other. The spinal laminectomy guide plate and the pedicle osteotomy guide plate share a single screw assembly. This invention avoids errors in judging the resection area based on human experience, and also avoids hand-holding the guide plate and guide plate position deviation during surgery.

The invention requests to protect a method for judging whether a screw punctures the inner wall of a vertebral pedicle or not based on intraoperative X-rays. The method comprises the following steps: acquiring a normal position image and a lateral position image of the screw in the vertebral pedicle of a patient; measuring the distance from the screw head to the screw tail of the screw in the normal position image and recording the distance as B, and measuring the distance from the inner side edge of the vertebral pedicle to the screw head of the screw and recording the distance as x; measuring the distance from the screw head to the screw tail of the screw in the lateral image and recording the distance as A, and measuring the distance from the rear edge of the vertebral pedicle to the screw head of the screw in the lateral image and recording the distance as a; obtaining a comparison value b through a formula a / A = b / B; and analyzing the distance x from the inner side edge of the vertebral pedicle to the head of the screw in the normal position image and the comparison value b to judge whether the screw pierces the inner wall of the vertebral pedicle. Theoretically, when it is judged that the distance x from the inner side edge of the vertebral pedicle to the screw head of the screw is larger than the comparison value b, it is indicated that the screw pierces the inner wall of the vertebral pedicle, and b-xlt is obtained through verification of actual cases; and 0.97 mm can judge that the screw punctures the inner wall of the vertebral pedicle. Therefore, a doctor can adjust the position of the screw in time in an operation.

This invention pertains to spinal pedicle screws, specifically locking spinal pedicle screws, including perforated pedicle screws and cortical bone screws that work with them. The proximal end of the self-locking master screw is thickened. A through-hole is provided in the thickened section of the pedicle screw, and the cortical bone screw is driven into the through-hole and fixed to the upper and lower cortical bone layers of the pedicle to form a triangular fixation. After the pedicle screw is implanted, both ends of the through-hole of the pedicle screw are located inside the pedicle. A hole is drilled from the posterolateral aspect of the pedicle using a special aiming device, passing forward and upward through the oblique hole of the pedicle screw, and then through the anterior and superior cortical bone of the pedicle. After measuring the length, a suitable cortical bone screw is selected, screwed in, and locked, fixing the posterolateral cortical bone, the pedicle screw, and the anterior and superior cortical bone of the pedicle. The screw is positioned in a safe area of ​​the superior cortical bone of the pedicle. The cortical bone screw is fixed to the upper and lower cortical bone of the pedicle by passing through the oblique hole, thus locking the position of the pedicle screw.

Pedicle bone anchor implants, assemblies, and methods thereof. The implant may include an expandable anchor having a body with expandable sections separated by one or more expansion joints, a plurality of expandable teeth, or an expandable head. The expandable anchor has a collapsed configuration and an expanded configuration, thereby creating a press-fit in adjacent bone.

The invention discloses an intelligent preparation and precise implantation method for a pedicle screw path based on attitude perception. The method comprises the following steps: generating an attitude monitoring module representing real-time attitude angle data of a surgical instrument; the adaptive fixing mechanism is connected with the posture monitoring module and enables the measuring reference axis of the posture monitoring module to be consistent with the working direction of the instrument; when it is judged that the real-time posture angle is matched with the ideal nail path angle, a prompt signal is generated and output, an expensive robot platform is not needed, and real-time monitoring and intelligent prompt of the angle in the operation can be achieved by adapting the micro posture monitoring module to a common abrasive drill and other instruments; the robot-level implantation precision can be achieved by doctors in traditional manual operation, the three industrial pain points of insufficient judgment precision depending on experience, high cost and complex operation of a robot navigation system and radiation risk caused by repeated perspective in an operation in the prior art are effectively solved, and the operation safety and universality are remarkably improved with extremely low cost.

The invention relates to the field of machining of medical instruments, in particular to a pedicle screw machining method and equipment, and the machining equipment comprises the steps that a plurality of micropores are machined in the circumferential wall of the smooth surface of the rear end of a screw rod of a pedicle screw through laser equipment; soaking the smooth surface processed with the micropores in a medicine tank of processing equipment; carrying out sand blasting and acid etching treatment on the threaded surface at the front end of the screw rod of the pedicle screw; and then cleaning and drying the pedicle screw to obtain a finished product. According to the invention, the smooth surface of the pedicle screw is soaked in the liquid medicine after being processed into the micropores, so that spraying on the smooth surface can be avoided, and the coating is prevented from falling off; in addition, osseointegration and bone growth can be promoted through soaking of the bone sustained-release medicine. Meanwhile, the threaded surface of the pedicle screw is subjected to sand blasting and acid etching treatment, the binding force between the screw and the bone can be effectively improved, faster osseointegration and higher anti-shearing capacity can be obtained, and the stability of internal fixation of the pedicle is effectively improved.

The invention belongs to the technical field of medical instruments, and particularly relates to a transpedicular vertebral body bone grafting device which comprises a mounting assembly. Comprising a mounting frame, jackets arranged on the two sides of the bottom of the mounting frame, threaded sleeves arranged on one sides of the jackets, threaded rods arranged in inner cavities of the threaded sleeves, hand wheels arranged at one ends of the threaded rods, fixed clamping plates arranged at the other ends of the threaded rods and sliding grooves formed in the top of the mounting frame. An adjusting assembly, comprising a sliding seat which is arranged in an inner cavity of a sliding groove and slides left and right along the sliding groove, a fixing pin arranged on one side of the sliding seat, a connecting rod arranged on one side of the sliding seat, hinge frames arranged on one side of the connecting rod, a hinge shaft arranged between the hinge frames, a self-locking motor arranged on one side of the hinge frames, and a turnover seat arranged on the surface of the hinge shaft, wherein the output end of the self-locking motor is connected with the hinge shaft. The bone grafting device is reasonable in structure, convenient to adjust, assemble and disassemble in the using process, high in flexibility, high in safety and beneficial to improving the success rate of an operation, and meanwhile the position and the angle of the bone grafting device are convenient to adjust.

The application provides a kind of based on deep learning pedicle screw channel planning method and device, the method comprises: extraction procedure, extract the pedicle CT image in the spine CT image to be extracted;Layering procedure, the pedicle CT image is sliced and layered along the pedicle cross section, confirm the pedicle boundary, and obtain a plurality of pedicle two-dimensional images in turn;Planning procedure, the center point of the pedicle two-dimensional image is obtained in turn, the center point is fitted, and the pedicle screw channel is obtained.The pedicle screw channel planning method and device based on deep learning provided in the embodiment of the application, by sequentially executing extraction, slicing, layering and confirming the boundary to the spine CT image, the pedicle two-dimensional image is obtained, the center point of the two-dimensional image is obtained in turn and the obtained center point is fitted to obtain the final pedicle screw channel, the rapid acquisition of the pedicle screw channel is realized, and the operation efficiency is improved.

The present invention belongs to the field of osteotomy orthotics in orthopedics, and in particular relates to a computer-aided design of a personalized lumbar intervertebral fusion device and a design and manufacturing method thereof, which includes reconstructing a patient's lumbar vertebrae model, measuring the position parameters of the intervertebral fusion device to be implanted and the parameters of the vertebral body under the fusion device in the patient's lumbar vertebrae model; using modeling software, taking the normal vertebral body shape as a reference, and taking the measured intervertebral size parameters of the patient as a standard, designing the shape parameters of the intervertebral fusion device body; designing positioning wings on the fusion device body in combination with the size parameters of the vertebral body under the fusion device position; designing two nail holes on the intervertebral fusion device body and the positioning wings, respectively, and fixing the fusion device without notches; the main body adopts a mesh structure and a solid structure arranged in an alternating manner; and adopting 3D printing technology to manufacture the device. The present invention has the following beneficial effects: the lumbar intervertebral fusion device manufactured by the present invention has a moderate volume, and its position and fixing method are accurate and reliable, and the incision insertion of posterior pedicle screws is avoided, thereby realizing minimally invasive, precise, low-cost and short recovery time surgery.

The utility model discloses a pedicle puncture cannula and a pedicle puncture trocar, and belongs to the technical field of orthopedic navigation surgical instruments.The pedicle puncture cannula comprises a hollow cannula body, a handle is arranged at the upper end of the cannula body, a connecting shaft is arranged on the side face of the handle, and a reference frame is arranged at the tail end of the connecting shaft; at least three marking balls are arranged on the reference frame, and the tube body is detachably connected to the handle. Navigation and positioning are carried out through the marking balls on the reference frame, the number of times of X-ray fluoroscopy in an operation can be reduced, and the placement position and depth can be easily determined.

The present invention discloses a pedicle screw path planning method, comprising: step S1: performing image segmentation on a spinal structure model to obtain a 3D voxel map of the target vertebra and pedicle; step S2: determining an initial screw radial direction and an initial screw radius based on the 3D voxel map of the target vertebra and pedicle; step S3: optimizing the initial screw radial direction and the initial screw radius based on the pedicle point cloud to obtain screw radial parameters and screw radius parameters; step S4: calculating the entry point and exit point coordinates of the pedicle screw based on the screw radial parameters and the pedicle centroid coordinates; step S5: simulating the swing range of the universal screw head based on the exit point coordinates to determine whether the screw rod passes through all pedicle screws on the same side, and if so, determining a planned path, and if not, iteratively executing steps S3 to S5 until the screw rod passes through all pedicle screws on the same side. This solution solves the problems of low efficiency and low success rate in pedicle screw placement and rod insertion.

A retractor blade assembly having a retractor blade having a track extending long on a face of the retractor blade, a screw entry at a bottom of the retractor blade comprising a window through which a bone screw is insertable, and a screw gate which engages the track on the retractor blade. Once the bone screw is placed through the screw entry, the screw gate lowers until the screw gate blocks the window.

The utility model provides a pedicle screw implantation guider. The pedicle screw implantation guider comprises a fixed guide rod, a sliding guide rod and a moving assembly. A positioning piece is arranged at one end of the fixed guide rod and used for being in positioning fit with a screw tail of an implanted screw, and the length direction of the fixed guide rod is the same as that of the screw. The sliding guide rod is provided with a first sliding piece, the first sliding piece is matched with the fixed guide rod in a guiding mode, and the sliding guide rod is perpendicular to the fixed guide rod. Due to the structural design of the guider, no matter how the fixed guide rod moves, the movable guide rod is always parallel to the fixed guide rod. The bone structure of a patient is not changed before and during the operation, so that for the vertebral pedicle, the included angle of the vertebral pedicle on the two sides of the same section of vertebral body is not changed, the direction of the vertebral pedicle on one side is used as a reference to determine the direction of the vertebral pedicle on the other side, interference of the posture of the patient, operation anesthesia and other factors is avoided, and the accuracy of the screw placement direction is higher. Positioning is more accurate, and operation safety can be improved.

A device for augmenting a vertebra. The device includes an expandable implant and a pedicle anchor. The pedicle anchor includes at least one anchoring element movably coupled to an anchor body. An actuator is movable within the anchor body to deploy the anchoring element into engagement with a vertebral pedicle. The anchoring element may be deployed in a same plane as a tissue support ski of the expandable implant. The actuator may be a rod including a knuckle or a cam. The tissue support ski may be recessed from an outer profile of the device. Struts of the expandable implant may be angled towards the tissue support ski in an insertion configuration. The device may be oval-shaped and provide means for rotating the expandable implant relative to the pedicle anchor, and for blocking the expandable implant in a predetermined orientation. Methods of deploying the device are also disclosed.

The utility model relates to medical instrument technical field, concretely relates to a lumbar screw device for osteoporosis, including fixed mainboard, still including fixing device, fixing device includes cone screw, pasting board, transverse process screw, stabilizer and hinged component, and the cone screw is with fixed mainboard screw thread cooperation, and pasting board is through hinged component and fixed mainboard swing joint, and stabilizer fixed mounting is on pasting board, and is located pasting board far from fixed mainboard's one side, and transverse process screw screw thread penetrates stabilizer, and through the cone screw and hit into cone, make fixed mainboard fixed on cone, and through the cooperation of transverse process screw and stabilizer, make pasting board fixed on pedicle, realize the auxiliary fixation of fixed mainboard, to this end complete the fixation to fractured lumbar vertebra, because reduced the use of screw, and then in guarantee fixed effect's simultaneously, reduced the destruction to lumbar vertebra.