56 results about "Screw placement" patented technology

The invention provides a cortical bone screw automatic planning method and device based on a statistical morphology model. The method comprises the following steps: acquiring CT image data of any object; based on the CT image data, segmenting point cloud information of a vertebral body to be subjected to screw placement; acquiring a statistical shape model and cortical bone screw planning information corresponding to the serial number; and registering the statistical shape model to the point cloud information, and determining a cortical bone screw plan of the vertebral body to be subjected to screw placement. In the application, the preset screw placement planning of the cortical bone screw is performed through the statistical shape model, and the preset screw placement planning is mapped to the current spinal column three-dimensional model through registration, so that the preset screw placement planning only needs to be performed on the statistical shape model, and a screw placement model is not needed, thereby solving the problem that a large number of cases need to be collected to realize the screw placement model; therefore, the problem of nail placement of the cortical bone can be solved.

Surgical systems and methods for correcting a bunion percutaneously including aligning guides are provided herein. At least one embodiment includes a handle including a rod with a first end including a first longitudinal axis and a second end including a second longitudinal axis offset from the first longitudinal axis. The handle can couple to a gadget including a leg that couples to the handle, and a translator that extends and retracts the leg. The gadget can also a slide with a guide body to guide a guide wire for accurate placement of a screw. The surgical system can also include a periscope to assist in pre-visualization of the screw placement.

The utility model provides a thoracolumbar spine nail channel personalized nail placing device, and belongs to the field of surgical instruments in the field of spine surgery in clinical medicine and external science. The screw placement device comprises a holding assembly, a connecting piece and a bone recognition assembly, the connecting piece is used for connecting the holding assembly with the screw tap assembly or the pedicle screw tool bit, and the holding assembly is fixedly connected or detachably connected with one end of the connecting piece; the screw tap assembly or the pedicle screw tool bit is arranged at the other end of the connecting piece and is fixedly or detachably connected with the connecting piece; the bone recognition assembly comprises a torque measuring component, and at least part of the torque measuring component is connected with the screw tap assembly and / or the pedicle screw tool bit so as to obtain the real-time torque of the screw tap assembly and / or the pedicle screw tool bit in the screwing-in process. The real-time torque of the screw tap assembly or the pedicle screw tool bit in the screwing-in process is obtained through the torque measuring component, the matched screw is selected, and the surgical curative effect is improved.

The invention relates to the field of orthopedic surgical instruments, in particular to a 3D printing calcaneus screw placement guide plate for percutaneous calcaneus screw placement and a preparation method of the 3D printing calcaneus screw placement guide plate. Wherein the plate body is provided with an inner surface and an outer surface opposite to the inner surface, and the inner surface of the plate body is a fitting curved surface matched with the contour of the surface of a heel; the guide part is fixedly arranged on the outer surface of the plate body, and the guide part is located in the middle area of the outer surface of the plate body; the guide part comprises a plurality of screw placement guide columns fixedly arranged on the outer surface of the plate body, and screw placement holes formed along the central axes of the screw placement guide columns; the nail placing holes penetrate through the plate body; according to the 3D printing calcaneus screw placement guide plate, through design and 3D printing manufacturing based on patient individual anatomical features, accurate guiding of percutaneous calcaneus screw placement is achieved, and the problem that due to the fact that a traditional percutaneous operation depends on experience of an operator, accuracy is insufficient is effectively solved.

The invention discloses a femoral neck fracture treatment positioning plate, preparation equipment and a preparation method, the positioning plate comprises a main body plate and an adjustable guide module, the shape of the main body plate is matched with the anatomical form of the outer side bone surface of the proximal femur, and the main body plate is provided with at least one bone nail hole. The individualized main body plate accurately matched with the anatomical form of a patient is introduced, and the adjustable guide modules of various innovative designs are combined, so that the problem that a traditional positioning plate is poor in universality is effectively solved, and anatomical differences and operation requirements of different patients can be perfectly met; a spherical hinge, an offset sliding block-arc-shaped guide rail, an elastic deformation ring, a modularized guide sleeve and other structures are adopted by the guide module, the space angle stepless adjusting function is ensured, meanwhile, the mechanical structure is remarkably simplified, redundant parts are eliminated, high-rigidity and gapless locking is achieved, micro-motion and displacement in an operation are thoroughly avoided, and the operation efficiency is improved. And the accuracy and the reliability of screw placement are greatly improved.

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.

The utility model relates to the technical field of assembling jigs, in particular to a screw installation fool-proof structure which comprises a supporting table and further comprises a screw placing assembly, a screw fixing assembly and a screw fixing assembly, the screw placing assembly comprises a bearing seat installed on the supporting table, and the bearing seat is provided with a placing supporting plate used for supporting a screw body; the screw locking assembly comprises a base plate provided with a PLC control module and an electromagnetic valve, the base plate is installed on the supporting table, and an overturning adsorption seat used for adsorbing the screw body is installed on the base plate; the screwdriver head fixing assembly comprises a vertical rod fixedly installed on the supporting table and a screwdriver head fixing clamping arm installed along the vertical rod in a lifting mode, and the screwdriver head fixing clamping arm is used for taking the adsorbed screw body; according to the fool-proof structure for screw installation, the screws can be intelligently taken, the screw installation holes can be aligned, wrong installation of the screws is avoided, the accuracy and reliability of screw installation can be improved, and the production efficiency and the product quality can be improved.

Systems and methods are disclosed that provide a computerized framework for performing decision intelligence (DI)-based evaluation and / or surgery of a patient's spine. The disclosed spinal evaluation framework provides a robotically actuated screw placement and evaluation system. The disclosed framework can be implemented for performing pre-operative, intra-operative, and / or post-operative spinal evaluations / procedures. The disclosed spinal framework can be utilized for robotically actuated pedicle screw placement, robotically actuated bone removal, and / or spinal configuration optimization via spinal flexibility and alignment assessment.

The invention provides a precise navigation method and system for large trochanter bone scale retardation. The method comprises the following steps: acquiring a bone three-dimensional model of a large trochanter and planning information of a retardation screw; carrying out registration on an entity trochanter and the skeleton three-dimensional model in an operation, and mapping planning information of a blocking screw; and tracking and displaying the poses of the screw placement tool and the solid large trochanter in real time so as to navigate the screw placement action of the retardation screw. In the application, accurate screw placement of epiphyseal block is realized by planning the screw placement scheme of epiphyseal block, tracking the screw placement tool and the distal end of the solid femur in real time, so that accurate screw placement is realized without repeated fluoroscopy, and radiation exposure injury is avoided.

The invention relates to the technical field of medical instruments, in particular to an interbody fusion cage which comprises an interbody fusion cage body, the interbody fusion cage body is of a polyhedral structure and is implanted into the lumbar intervertebral space through an anterior lateral approach, and a screw channel and a connecting screw opening are formed in the front end position and the rear end position in the length direction of the interbody fusion cage body respectively; the screw channel is used for allowing screws to penetrate through the upper surface and the lower surface of the interbody fusion cage body, connected with the vertebral cancellous bone in a matched mode and fixed to the inner side of the lateral portion of the vertebral cancellous bone. The connecting screw is used for being connected with an installation instrument in a matched mode when the interbody fusion cage is implanted. By means of the screw channel, the fixing capacity of the interbody fusion cage can be effectively improved, better stability can be effectively provided for an OLIF operation through a proper implantation position and screw placement internal fixing operation, the occurrence risk of postoperative internal fixing related complications is effectively reduced, and the safety of the interbody fusion cage is improved. The effectiveness and the safety of the fusion cage in the lumbar vertebra front and outer side approach interbody fusion operation are improved.

The invention provides a screw angle measuring, guiding and positioning method for a proximal femur compression steel plate, which is applied to the technical field of orthopedic surgery assistance and comprises the following steps of: constructing a three-dimensional bone morphological model of the proximal femur of a patient before a surgery, simulating different X-ray projection directions and generating a projection of a virtual guide needle on a two-dimensional image; measuring an included angle parameter between a femoral neck axis and a guide pin projection, correcting the included angle parameter into a screw incident angle parameter, further designing a guider shell, a guide hole and a sensor layout based on the angle parameter, performing matched simulation on a three-dimensional bone form model, and evaluating the fitting degree of the guider on the bone surface and the guide hole positioning precision; therefore, accurate reference is provided for preoperative screw placement path planning and intraoperative guider use, quantifiable design and guide control of the incident angle of the screw are achieved, and deviation of screw placement is reduced.

The utility model discloses a multifunctional guider for olecranal fracture and osteotomy, and belongs to the technical field of surgical auxiliary instruments. Comprising a guide fixing plate and a guide assembly, the guide fixing plate is provided with a positioning hole, a fixing hole and olecranon hooks, the guide fixing plate is an arc-shaped plate capable of being attached to the olecranon end of the ulna, the positioning hole and the fixing hole transversely and longitudinally penetrate through the guide fixing plate respectively, the two olecranon hooks are symmetrically arranged on the guide fixing plate, and the olecranon hooks are arranged on the guide assembly. A guide assembly is arranged on the guide fixing plate between the two olecranon hooks, the guide assembly comprises two sighting device sleeves, and a V-shaped osteotomy guide opening is further formed in the guide fixing plate; the olecranon fracture reduction and fixation device can assist in olecranon fracture reduction and fixation, accurate screw placement and needle insertion, meanwhile, accurate osteotomy can be achieved during olecranon osteotomy, follow-up reduction and fixation are completed, and good clinical prognosis is achieved.

The present invention relates to a screw planning method and rod navigation method for spinal screw placement surgery. The method comprises: obtaining an initial screw position according to a screw planning algorithm, wherein the initial screw position includes the positions of multiple screws to be set; selecting a target screw rod path that meets preset preferred conditions based on the initial screw position and screw size, wherein the screw rod is used to pass through multiple screws; and determining a target screw position based on the target screw rod path. This method addresses the problem that screw planning algorithms in related technologies have certain errors, require manual adjustment during open surgery, and are difficult to apply to minimally invasive screw placement surgery.

The invention provides a lumbar vertebra oblique lateral self-locking integrated fusion internal fixation system which comprises an interbody fusion cage, the interbody fusion cage is of a torpedo-shaped streamline structure on the whole and is of an arc-shaped appearance with the middle protruding and the two sides low, the front portion of the interbody fusion cage is high, the rear portion of the interbody fusion cage is low, the side section of the interbody fusion cage is wedge-shaped, and the interbody fusion cage is matched with an intervertebral space structure. A pair of diagonal trusses is fixedly connected in the hollow cavity; the micro side plate is arranged on one side of the interbody fusion cage, the micro side plate and the interbody fusion cage are of a 3D printing integrated structure, a threaded hole and clamping grooves in the two sides are formed in the middle of the micro side plate, and four inclined threaded holes are formed in the four corners of the micro side plate respectively; the number of the fixing screws is four, the fixing screws are connected into the inclined threaded holes through threads respectively, and the four fixing screws are in a multi-axial-direction crossed angulation form. According to the low-incisura, integrated and self-locking novel oblique lateral fusion internal fixation system, internal fixation related complications can be reduced, the operation process in an operation is simplified, the screw placement safety is ensured, and the use experience of the fusion system is improved.

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.

The utility model relates to a screw dispensing tool capable of preventing artificial omission, which relates to the technical field of dispensing equipment and comprises a base, a positioning metal plate and a damping hinge. A glue storage groove is formed in the upper face of the base, the damping hinge is connected to the middle of the front face of the base, the positioning metal plate is connected to the other end of the damping hinge, and a plurality of screw containing clamping grooves are formed in the other end of the positioning metal plate at equal intervals. The device has the advantages that manual omission is prevented, accurate dispensing of each screw is ensured through the fixing operation process of the tool, and omission is avoided; the glue amount is accurately controlled, specifically, the depth of the screw immersed in the glue is controlled by rotating the positioning metal plate, and the glue amount is accurately controlled; the device is simple in structure, easy to operate and suitable for a large-scale production environment; the acrylic base and the positioning metal plate are adopted, so that the material cost is low, and manufacturing and maintenance are easy.

The application provides a screw angle measurement and guiding positioning method of a proximal femoral compression plate, which is applied to the technical field of orthopedic surgery assistance, and is characterized in that: a three-dimensional bone shape model of the proximal femur of a patient is constructed before surgery, different X-ray projection directions are simulated, the projection of a virtual guide needle on a two-dimensional image is generated, the included angle parameter between the femoral neck axis and the guide needle projection is measured, the screw incidence angle parameter is corrected, the guide device shell, the guide hole and the sensor layout are further designed based on the angle parameter, and the cooperation simulation is carried out on the three-dimensional bone shape model to evaluate the fitting degree of the guide device on the bone surface and the positioning accuracy of the guide hole, so as to provide accurate reference for preoperative screw placement path planning and intraoperative guide device use, realize the quantifiable design and guiding control of the screw incidence angle, and reduce the deviation of screw placement.

A computer-implemented method for placing pedicle screws is disclosed herein. The method inputs a medical image having at least one bone image which is then divided into spatial segments. A set number of screws are spaced in each segment according to a neural network trained on medical images of screw placement in a similar procedure.

The invention relates to an imprecision-tolerant threaded insert for self-tapping screws, designed to improve fastening applications. The insert comprises an outer shell with exterior threading and a core made from a resiliently deformable material, capable of accepting and retaining a self-tapping screw. The insert features material modulation elements that manage core deformation during screw insertion, prevent deformation of the outer shell, and may reduce the torque required for screw engagement. The threaded insert is capable of engaging with the aperture of a wall anchor, ensuring a secure fit. This innovative design enhances the functionality and tolerance of fastening systems, particularly in situations involving misalignment or imprecision during screw placement.

A Lisfranc reconstruction device includes a pair of operator grips mechanically linked to a first arm that includes a barrel and a second arm that includes a jaw whereby motion of the grips is mechanically transformed into relative translation of the barrel and the jaw for compression of a portion of a Lisfranc joint complex therebetween. The device includes a retention mechanism, such as a ratchet, to enable retention of the barrel and jaw when the desired position has been reached. The device may be provided in the form of a kit that includes a wire guide sleeve, a pilot wire, and a Lisfranc screw, in particular a cannulated Lisfranc screw that is sized to travel over the wire in a defined trajectory to facilitate proper screw placement. The device may be used for reconstruction of a traumatic injury to the Lisfranc joint complex.

The utility model discloses an electric screw driver convenient for feeding, which comprises a hand-held part, one end of the hand-held part is connected with a connecting seat, one end of the connecting seat is provided with a mounting seat, the inner side of the mounting seat is fixedly provided with a circular ring block, the inner side of the circular ring block is rotatably provided with a screw driver body, and the screw driver body is connected with the hand-held part. An adsorption mechanism penetrating to the inner side of the screwdriver body is arranged at the top of the mounting base, one end of the mounting base is connected with a first sleeve, and a second sleeve with the position adjustable is mounted at one end of the inner side of the first sleeve. When a screw needs to be adsorbed, a worker only needs to place the screw on the inner side of the second sleeve, at the moment, the piston rod can be driven to move upwards to enable the inner side of the open groove to generate negative pressure only by shifting the handle upwards to move upwards, and at the moment, the negative pressure hole formed in a communicating mode can automatically adsorb the screw to be adsorbed. Manual alignment and righting in the screwing process are not needed, and the phenomenon that the screws may deviate due to inclination in manual righting is avoided.

The invention discloses a pelvic channel screw positioning system with a digital navigation interface, and belongs to the technical field of medical instruments, the pelvic channel screw positioning system comprises an arc-shaped positioner main body, a guide sleeve slidably connected to an adjusting device through a sliding block and a locking mechanism, and the digital navigation interface is rigidly fixed to the side portion of the guide sleeve. The digital tracing interface is used for installing an optical or electromagnetic space tracing element, and when the guide sleeve slides in the second sliding groove along with the sliding block, the digital tracing interface synchronously collects vector displacement data and converts the vector displacement data into needle passage axis coordinates through a mapping matrix. The problem that repeated X-ray perspective positioning is needed in a traditional pelvic surgery is solved, real-time needle insertion deviation feedback is achieved through a digital interface, the accuracy of screw implantation is remarkably improved, and the risk of radiation exposure of doctors and patients is reduced.

The orthopedic outer frame comprises an outer frame body, the outer wall of the top of the outer frame body is fixedly connected with a junction box body, the top of the junction box body is fixedly connected with a protrusion, the top of the junction box body is provided with a junction box cover, the bottom of the junction box cover is provided with a slot, and the protrusion is connected with the slot in an inserted mode. Two connecting ports are formed in the bottom of the junction box cover, external threaded columns are fixedly connected to the interiors of the two connecting ports, protective covers are movably connected to the outer sides of the external threaded columns, rubber pads are fixedly connected to the inner walls of the bottoms of the protective covers, and screw placement holes are formed in the external threaded columns. According to the utility model, through cooperative use of the rubber pad and the rubber ring, the junction box body and the outer frame body are subjected to double sealing protection at the interface where the junction box body and the outer frame body are connected through the screw, and the baffle plate can stably shield and protect the power interface through the elastic ball.

This invention provides a guiding method and device for femoral neck screw placement, relating to the field of surgical navigation technology. The method includes: establishing an XOZ coordinate system based on the origin in the coronal image of the patient, with the center of the femoral head as the origin, and establishing an XOY coordinate system based on the origin in the axial image of the patient; determining a first plane in the XOZ coordinate system where the optimal screw placement position of the femoral neck is located; determining a second plane in the XOY coordinate system where the optimal screw placement position of the femoral neck is located; and determining the intersection line of the first and second planes as the optimal screw placement position. This invention, through the use of a specific mathematical model, enables precise numerical calculation and analysis based on the patient's individualized skeletal structure data. It can accurately plan the optimal screw placement position based on the three-dimensional bone model of the femoral neck, avoiding the errors caused by traditional methods that rely solely on experience or approximate measurements.

This invention provides a screw placement guide for ankle fusion surgery, belonging to the field of medical devices. It includes multiple elastic locking mechanisms and multiple omnidirectional positioning mechanisms. Internally, it comprises a rectangular frame fixedly mounted on the bottom of a longitudinal hollow shell, a longitudinal slider movable along the longitudinal direction of the rectangular frame, a rotating ball head rotatably mounted in the middle of the rectangular frame, and a positioning hole disposed in the rotating ball head for positioning the fusion screw. This application utilizes the elastic friction of a fixed ring to achieve a circular motion-type position change function around the fixed ring. Under the action of frictional resistance, the connecting parts are less prone to precision deviation. Furthermore, utilizing the ball joint principle, the positioning hole for positioning the fusion screw can have a wide range of angular changes within space, thereby improving the positioning angle range for the fusion screw.

The utility model relates to the technical field of inclined plane screw placement, and discloses an inclined plane screw placement mechanism which comprises a working frame, a working station, a linear module, a mounting bracket, an electric control rotating seat, a connecting bracket, a first pushing mechanism, a screw placement seat, a screw placement hole, a second pushing mechanism, a push rod and a guide limiting column. According to the shell nailing device, the two working stations are arranged, when shell nailing work is conducted on one working station, shell feeding and discharging on the other working station can be achieved, screws are added on the screw containing base again, the production efficiency is improved, and the labor intensity of manual nailing is reduced.

The invention discloses a spine screw placement robot closed-loop control method and system based on intraoperative image feedback. The spine screw placement robot closed-loop control method comprises the following steps: acquiring a screw insertion point planning pose of a screw placement guide needle under a robot base coordinate system planned before an operation; obtaining an intra-operative registration fusion image of the two-dimensional projection of the preoperative spine CT image model and the optical image collected in the operation, and determining the position coordinates of an intra-operative actual nail entry point under an image pixel coordinate system; the actual position coordinates of the nail-in point in the operation are converted into position coordinates of the nail-in point under a robot-based coordinate system, the position coordinates of the nail-in point are fused with the attitude angle of the planned attitude of the nail-in point, and the target attitude of the nail-placing guide needle is generated; and the target pose is input into a control system of the spine screw placement robot to drive the spine screw placement robot to move, so that the screw placement guide needle reaches the target pose. The image registration information can be seamlessly and accurately converted into the motion instruction of the spine screw placement robot, and automation and intelligentization of the whole process from visual perception to physical execution are achieved.

The invention discloses a rapid screw holding kit, and belongs to the technical field of medical instruments, the rapid screw holding kit comprises a positioning sleeve, a screw limiting sleeve and a bone fracture plate, the positioning sleeve and the screw limiting sleeve are parallel to each other and are attached to each other, and a locking sleeve is inserted into the screw limiting sleeve; a plurality of combination holes are formed in the bone fracture plate at intervals in the length direction of the bone fracture plate, each combination hole comprises a positioning hole and a screw fixing hole, the positioning holes and the screw fixing holes are adjacently arranged, and the positioning sleeves and the locking sleeves correspond to the positioning holes and the screw fixing holes in any combination hole respectively. According to the minimally invasive steel plate internal fixation screw, the technical problems that in the minimally invasive steel plate internal fixation operation process of fracture at present, exposure is limited due to a minimally invasive small incision, so that the screw placement difficulty is increased, and meanwhile when the screw needs to be screwed out, the screw is difficult to take out due to insufficient displacement exposure can be solved.

This invention discloses a screw-installing device suitable for angled sacroiliac screws. The device includes a torque-applying section for installing the sacroiliac screw. The distal angle of the tubular torque-applying section matches the proximal angle of the sacroiliac screw, ensuring complete alignment of their axes. Each end of the torque-applying section is provided with an elastic locking element and a driving element. The elastic locking element is used to lock or unlock the sacroiliac screw, and the driving element controls the movement of the elastic locking element, thereby enabling the installation and removal of the torque-applying section and the sacroiliac screw. This screw-installing device is used for placing angled sacroiliac screws. Angled sacroiliac screws cannot be directly rotated in a minimally invasive environment after insertion. This device is suitable for both pre- and post-screw placement of sacroiliac screws, significantly reducing damage to surrounding nerves and blood vessels and significantly improving surgical efficiency.

A screw conveyor with a direction unifying function relates to the technical field of screw conveyors and comprises a base, an adjusting seat is mounted in the base, the bottom of the adjusting seat is connected with an inner cavity of the base through a bearing, and a screw placing box is fixedly arranged above the adjusting seat. A conveying frame is installed in the middle of the interior of the screw containing box, one end of the conveying frame extends to the exterior of the screw containing box, material distributing plates are arranged on the portions, located on the two sides of the conveying frame, of the screw containing box, the material distributing plates and the screw containing box are welded and fixed, and a feeding plate is slidably installed in the adjusting base; and the feeding plates extend into the screw containing box and are located on the two sides of the material distributing plate, and the problem that the screw conveyor cannot adjust the directions of screws in the conveying process is solved.