140 results about "Pedicle screw" patented technology

A clinical vertebra image segmentation method for assisting pedicle screw placement surgery, said method comprising: constructing a VerseDiff-UNet end-to-end framework, the framework being integrated with a denoising diffusion probabilistic model (DDPM); combining a noise-added image with a marked mask by using the VerseDiff-UNet framework, and guiding a diffusion direction toward a target region; and introducing a shape priors module on the basis of the DDPM, and extracting structural semantic information from an input spine image. In order to capture specific anatomical prior information in a medical image, the shape priors module is combined and the module effectively extracts the structural semantic information from the input spine image, thereby enabling more accurate anatomical structure segmentation, and facilitating accurate diagnosis and treatment of spinal disorders.

The embodiment of the invention is suitable for the technical field of computer-aided medical treatment and image processing, and provides an automatic planning device and equipment for a pedicle screw and a computer program product. Extracting vertebral body outer layer point cloud data of a to-be-planned single vertebral body from the spine image data; the prediction model is used for processing the centrum outer layer point cloud data and outputting prediction coordinates, and the prediction coordinates comprise entry point coordinates and exit point coordinates; and the planning unit is used for planning the placement position of the pedicle screw based on the entry point coordinate and the exit point coordinate. By adopting the device, the planned position of the pedicle screw can be quickly and accurately predicted by using the deep learning model based on the point cloud data of the outer layer of the vertebral body, the data volume needing to be processed in the planning process is reduced, and the planning efficiency is improved.

The invention discloses a rod end pedicle screw connector and a spine stabilizing device, and the connector comprises a first maintaining part which is provided with a cylindrical cavity, a main accommodating groove and an extrusion cavity; the second retaining part is arranged in the columnar cavity and is fixed with the rod-shaped part; the main gland is screwed with the upper cavity wall of the columnar cavity; a first sub-gland for pressing the second holding member; the wrapping part is arranged in the extrusion cavity and used for clamping the ball head of the screw; a force transmission part is arranged between the wrapping part and the main gland and used for transmitting pressure applied by the main gland to the wrapping part. An elastic component is arranged in the columnar cavity and is provided with a first combining end and a second combining end, and the two combining ends are allowed to be close to or far away from each other and the first combining end is allowed to swing in any direction relative to the second combining end through elastic deformation; the first combination end is fixedly connected to the second holding part, and the second combination end is fixedly connected to the first holding part or the force transmission part.

The invention relates to the technical field of bone implants for minimally invasive surgery, and particularly discloses an implant for percutaneous minimally invasive thoracolumbar vertebral fracture, which comprises a vertebral body forming body, the vertebral body forming body comprises a vertebral body forming body head and a plurality of blade parts arranged at the rear end of the vertebral body forming body head in a surrounding manner, the vertebral body forming body head is provided with a needle guide hole penetrating along the axial direction, and the needle guide hole is communicated with the blade parts; a containing cavity is defined by the blade parts; the front end of the threaded guide rod and the head of the cone forming body are integrally formed, the needle guide hole penetrates through the threaded guide rod in the axial direction, and the rear end of the threaded guide rod extends out of the containing cavity; the pedicle screw is provided with a threaded hole penetrating in the axial direction, the threaded hole is in threaded connection with the threaded guide rod, the pedicle screw comprises a screw head and a threaded part arranged at the rear end of the screw head, and the screw head is arranged in the containing cavity and expands the blade part. According to the implant for the percutaneous minimally invasive thoracolumbar vertebral fracture, surgical wounds are reduced, the vertebral restoration effect is good, the stability of a vertebral formed body is guaranteed, and the surgical time can be saved.

The invention provides a spinal pedicle screw implantation system based on a multi-modal image and MR navigation, and relates to the technical field of screw implantation, the system comprises a preoperative image processing module used for identifying bony characteristics of a patient and delimiting a screw implantation safety boundary according to the bony characteristics; and the bone image fusion navigation module is used for analyzing to obtain anatomical data of the patient, and calculating a screw implantation path according to a crown porcupine optimization algorithm in combination with bony characteristics. And the body position correction module is used for calculating the body position deviation value and synchronously adjusting the screw implantation path according to the body position deviation value and the screw implantation safety boundary. And the path risk early warning module is used for calculating the distance between the surgical tool and the key tissue in real time, and performing collision risk assessment and early warning. And the postoperative evaluation module is used for quantitatively evaluating the screw implantation precision and generating a postoperative report. According to the method, more accurate positioning can be provided for screw implantation, the accuracy of a screw implantation path is ensured, early warning is performed through extraction, a doctor is reminded to take measures in time, and operation safety is ensured.

A spinal fixation system including: a pedicle screw including a screw head, a screw tip opposite to the screw head, a screw body extending from the screw head to the screw tip, and a channel extending from a first opening defined in the screw head to a second opening defined at a side of screw body; a tulip head defining a cavity configured to accommodate the screw head, and defining a slot configured to accommodate a fixation rod; a nail including a nail head, a nail tip, and a nail body extending from the nail head to the nail tip, the nail body including a curved portion that is flexible; and an inserter for the nail configured to cooperate with the tulip head.

Systems and methods for automatically determining pedicle screw trajectories for surgery may be provided. A scan of a spine may be received, and positions of one or more vertebra and one or more components of the one or more vertebra in the scan may be identified. Next, a screw trajectory planning algorithm may determine an initial screw trajectory plan using the positions of the one or more vertebra and the one or more components. The screw trajectory planning algorithm may then determine a revised screw trajectory plan by revising the initial screw trajectory plan according to weighted factors.

The invention relates to the technical field of intelligent medical treatment, in particular to a lumbar vertebral pedicle screw dynamic guiding method and system based on augmented reality, and the method comprises the following steps: constructing an entity lumbar vertebra skeleton model of a patient, and obtaining a cubic marker of the entity lumbar vertebra skeleton model to establish a lumbar vertebra skeleton space coordinate system; acquiring scanning data of the entity lumbar vertebra skeleton model based on the lumbar vertebra skeleton space coordinate system, and reconstructing a three-dimensional lumbar vertebra skeleton model according to the scanning data; combining the entity lumbar vertebra skeleton model and the three-dimensional lumbar vertebra skeleton model to obtain a lumbar vertebra skeleton virtual and real registration result; and obtaining a real-time path track of the lumbar vertebra pedicle screw according to the lumbar vertebra skeleton virtual and real registration result so as to realize dynamic guidance of the lumbar vertebra pedicle screw. According to the invention, through registration of the solid model and the three-dimensional model, dynamic guidance of the screw path is realized in combination with a risk early warning mechanism, and the accuracy and safety of implantation of the lumbar pedicle screw are improved.

Implants, systems, and methods for securing a flexible band, thereby providing a desired correction to the spine. The implant may secure the flexible band to a spinal rod and / or a pedicle screw. The implant has a locking mechanism to secure the band. The band may be looped around bony anatomy and tensioned to achieve correction and provide fixation as an alternative or supplement to pedicle screws and spinal rods during spinal deformity surgery. Tensioners may be used that allow for multiple positions for attachment between the tensioner and a band clamp inserter.

The invention discloses a minimally invasive degradable reduction device for thoracolumbar vertebral fracture, and relates to the technical field of medical instruments. The mounting mechanism is mounted on the outer wall of the connecting rod in a sleeving manner; the pedicle screw is movably inserted into the middle of the top end of the mounting mechanism; an implantation mechanism; through cooperative work of the connecting rod, the mounting mechanism, the pedicle screw and the connecting mechanism, the whole reduction device adapts to minimally invasive approach modes such as percutaneous puncture and can be implanted into the body of a patient through a percutaneous puncture channel, a skin incision of the minimally invasive approach is small, damage to surrounding tissue is greatly reduced, and the reduction effect is good. Due to the layered design of the screw body in the pedicle screw, bone tissue ingrowth is promoted while the supporting strength is kept, and the reduction device is made of degradable materials, can be gradually degraded along with fracture healing after an operation and is metabolized and absorbed by an organism, and does not need to be taken out through a secondary operation, so that physical and mental pain of a patient is relieved; and the medical cost and the potential risk of the secondary operation are also reduced.

Devices, systems, and methods for a robot-assisted surgery. A surgical robotic system with integrated navigation and multiple surgical arms may assist a user with one or more surgical procedures. In addition to the multiple surgical arms, the robotic system may also have peripheral arms to position a navigation camera and surgeon displays. The robotic system is collaborative to allow for easy integration into procedural workflows, for example, to install pedicle screws, interbody implants, or other surgical devices.

This invention relates to a novel P-approach endoscopic lumbar fusion surgery method, belonging to the field of lumbar fusion surgery technology. This method addresses the high risk of nerve injury and insufficient operational precision in existing endoscopic fusion techniques by proposing an improved solution. It utilizes Kirschner wires for positioning at the inferior articular process to establish a precise entry point avoiding the nerve root pathway; a visually guided circular saw is used throughout the endoscopic procedure to construct a safe triangular working channel directly reaching the spinal canal; under full endoscopic monitoring, a unilateral approach is used for bilateral spinal canal decompression, thoroughly removing diseased tissue and scraping the endplates until punctate bleeding occurs; a bone graft cannula with a curved tip is used to precisely implant the fusion device into the anterior region of the intervertebral space, restoring intervertebral height through a self-locking structure; finally, a universal pedicle screw is percutaneously implanted for fixation. This method reduces the risk of nerve injury, improves surgical safety and efficiency, and is suitable for patients with lumbar spondylolisthesis complicated by spinal stenosis.

A system for robotic spinal manipulation includes a robotic tool including one or more screw connectors. Each screw connector is configured to connect to a pedicle screw and to move with one or more degrees of freedom. The robotic tool also includes a controller configured to control a position of each of the one or more screw connectors and a connector configured to mate with a robotic arm.

The utility model provides a split type kirschner wire and a kit for an orthopedic surgery robot, and belongs to the technical field of kirschner wires, the split type kirschner wire comprises a front kirschner wire body used for puncturing bones and a rear kirschner wire body used for being connected with an end effector of the orthopedic surgery robot, the front kirschner wire body is detachably connected with the rear kirschner wire body. Compared with Kirschner wire bending operation in the prior art, after the split type Kirschner wire is driven into the human body, the front Kirschner wire body with the proper length can be obtained more conveniently and safely, the problem of positioning displacement or loss caused by excessive pulling of the Kirschner wire is solved, and the Kirschner wire is more convenient to use. After the front kirschner wire body is detached and separated, due to the fact that the connecting end of the front kirschner wire body is smooth and clean, follow-up balloon dilatation kyphoplasty or pedicle screw implanting operation is facilitated, operation risks are reduced, and related operation operations can be carried out more safely, more reliably and more conveniently.

The utility model relates to a pedicle screw and a fixing system thereof, the pedicle screw comprises a screw body, a screw seat and a gasket, the screw body comprises a screw rod and a screw head which are connected, the peripheral surface of the screw head is a spherical surface, a first external thread is arranged on the spherical surface, two ends of the screw seat are respectively provided with a U-shaped groove and a ball groove, and the gasket is arranged in the U-shaped groove. The U-shaped groove is used for installing a connecting rod, a first internal thread is arranged in the ball groove, a screwing-in opening is formed in the end, away from the U-shaped groove, of the ball groove, the nail head can be screwed into the ball groove through the screwing-in opening and is in threaded fit with the ball groove, the gasket is installed in the nail base, and the screw head is connected with the gasket. At least part of the gasket extends into the ball groove and abuts against the nail head. According to the pedicle screw, the problems of interference and view shielding of the screw base in the operation process can be solved, and the operation time is shortened.

The invention relates to the technical field of medical machinery, and discloses a scoliosis correcting device. The scoliosis correcting device comprises a plurality of pedicle screws and a plurality of connecting rods, the pedicle screws are used for fixing the flexible orthopedic rod together, the flexible orthopedic rod comprises rod bodies and connecting pieces, the rod bodies are movably connected end to end through the connecting pieces, and the included angle formed by the adjacent rod bodies ranges from 160 degrees to 180 degrees. The connecting pieces capable of being movably connected are arranged between the rod bodies to form the flexible orthopedic rod, a certain natural movement range can be kept while the spine is corrected through the flexible orthopedic rod, the spine has the rotation movement freedom degree, a patient can keep a certain stoop ability, and therefore the patient can have the certain stoop ability. Due to the fact that the flexible orthopedic rod has the movement freedom degree among a plurality of conical sections of the spine, the spine can keep a certain movement freedom degree in the correction process, the movement ability of a patient in daily life can be kept, and the patient can better complete stooping, turning and other activities.

Some embodiments relate to a pedicle screw implant construct kit, comprising: at least one pedicle screw including a head; an embracing structure shaped and sized for embracing at least a portion of the screw head; an upper fastener for mounting onto the embracing structure, the upper fastener having a polygonal profile at least on a face of the upper fastener facing a direction opposite the screw.

A polyaxial pedicle screw arrangement that can be temporarily locked in place a polyaxial pedicle screw arrangement in position during a surgical procedure.

A polyaxial pedicle screw assembly includes a receiver having a channel for receiving a rod and a central bore with a seating surface proximate a bottom opening. The assembly also includes a screw shank having a shank head at a proximal end and an anchor portion at a distal end configured for fixation to the bone, with the shank head having an outer spherical surface with a single common radius and an annular planar top end surface entirely surrounding an internal drive socket formed into a top end of the shank head. The assembly further includes a pressure insert having an upper surface for receiving the rod and a lower surface for engaging the outer spherical surface of the shank head to direct a downwardly-directed force from the rod to the screw shank in a locked configuration. The annular planar top end surface on the shank head remains spaced apart from the lower surface of the insert so as to not directly receive the downwardly-directed force therefrom in the locked configuration.

Implants, systems, and methods for securing a flexible band, thereby providing a desired correction to the spine. The implant may secure the flexible band to a spinal rod and / or a pedicle screw. The implant has a locking mechanism to secure the band. The band may be looped around bony anatomy and tensioned to achieve correction and provide fixation as an alternative or supplement to pedicle screws and spinal rods during spinal deformity surgery. Tensioners may be used that allow for multiple positions for attachment between the tensioner and a band clamp inserter.

A spinal connector implant (1) is proposed for connecting and / or aligning at least a first rod with a second rod. The connector implant (1) comprises an implant body (20) with a pocket sized and shaped to engage over a rod receiving head (81) of a pedicle screw assembly (80); at least a first rod receiving passage (50) intersecting a first rod locking arrangement (51); and a rod receiving head locking mechanism (60) providing a locked state and an unlocked state. The rod receiving head locking mechanism (60) is configured to rigidly lock the rod receiving head (81) against at least a portion of the pocket in the locked state. The rod receiving head is movably engaged in the pocket in the unlocked state for assembly purposes, and in the locked state, the rod receiving head is rigidly fixed in the pocket of the connector implant.

An orthopedic fixation device for affixing the screw head of a polyaxial pedicle screw has a tulip, a saddle, and a ring. The tulip has an interior cavity and two opposed threaded arms and a lower ledge. The saddle is inserted into the tulip body, and has a U shaped groove for receiving a spinal fixation rod. The ring has a diameter that is smaller than the widest diameter of the screw head, and is formable into a diameter larger than the widest diameter of the screw head when the screw head is pushed into the ring. The ring has a connection portion that mates with a connection portion of the saddle. The screw head is clamped within the tulip body between the saddle and the ring when a cap is threaded between the tulip arms.

The invention belongs to the technical field of medical apparatus and instruments, and provides a closed vertebral nail path blood collection device and a use method thereof.The closed vertebral nail path blood collection device comprises an outer tube, a sliding way is formed in the top of the outer tube inwards along the axis of the outer tube, and a blood penetrating hole is formed in the bottom of the outer tube and communicates with the bottom of the sliding way; the piston is slidably connected in the slide way, a piston push rod is fixedly connected to the side, away from the blood penetrating hole, of the piston, a connecting assembly is detachably connected to the top of the outer tube, the standard nailing device clamps the outer tube through the connecting assembly, and the connecting assembly is fixedly connected with the piston push rod. The device can be seamlessly connected with an existing pedicle screw implantation process, and it can be ensured that pure vertebral screw channel bone marrow blood is collected in a closed environment.

The invention discloses a reusable column universal reduction device for spinal surgery, which comprises a plurality of supporting assemblies, a bearing frame, a guide rod, a universal adjusting assembly, an adjusting electric cylinder and a control terminal, and is characterized in that the supporting assemblies are used for supporting the whole universal reduction device; the number of the bearing frames is two, and supporting assemblies are connected to the two sides of the bottoms of the two bearing frames correspondingly. The guide rod is arranged between the two bearing frames; the position of the guide rod can be adjusted along the bearing frame; the number of the universal adjusting assemblies is multiple, one ends of the multiple universal adjusting assemblies are connected with the guide rod, and the universal adjusting assemblies can be adjusted along the guide rod. The top ends of the adjusting electric cylinders are arranged at the bottoms of part of the universal adjusting assemblies and used for adjusting the positions of the pedicle screws and the connecting rods. The control terminal is arranged at the top end of the bearing frame and electrically connected with the adjusting electric cylinder.

A polyaxial pedicle screw arrangement that can be temporarily locked in place a polyaxial pedicle screw arrangement in position during a surgical procedure.

The application discloses a pedicle screw system, which comprises a screw expansion sleeve, a screw body, a fixing base, a fastening nut, a fixing rod, a guide cylinder and a bone cement injection device; the screw expansion sleeve is provided with a connecting sheet with a gradient structure and expansion wings with through grooves, can reversely engage with a bone hole, and has good anti-loosening effect. The guide cylinder can realize component positioning and assembly guiding, and can also cooperate with the bone cement injection device to complete preoperative bone cement pre-injection strengthening before the screw body and the fixing base are assembled. The fixing base is provided with a guide plate and a limiting type fixing rod, and assembly positioning is convenient. The pedicle screw system has high fixing strength, is suitable for osteoporosis patients, does not need secondary surgery, is simple in assembly, and has strong clinical practicability.

Implants, systems, and methods for securing a flexible band, thereby providing a desired correction to the spine. The implant may secure the flexible band to patient anatomy without the use of pedicle screws or spinal rods. The implant may include a locking member configured to secure the band. The band may be looped around bony anatomy and tensioned to achieve correction and provide fixation as an alternative to pedicle screws and spinal rods during spinal deformity surgery.

The invention discloses an implantable medical device for treating spinal disorders, comprising a superelastic corrective rod that can be attached to a set of pedicle spine screws, characterised in that the corrective rod defines a continuous longitudinal axis along which a set of aligned sections are arranged. The set of sections alternately comprises a contact section and a recessed section, which can be twisted. The set of screws comprises at least one locking screw comprising a closure on the head that can be configured to move between a locked position and a sliding position.