106 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.

The invention discloses a multifunctional guider for olecranal fracture and osteotomy and an implementation method, and belongs to the technical field of surgical auxiliary instruments. The guider comprises a guide fixing plate, a guide sleeve and an adjustable guide assembly, a plurality of sets of positioning holes are formed in the head portion of the guide fixing plate, each set of positioning holes comprises two collinear positioning holes located in the two sides of the head portion of the guide fixing plate respectively, the guide sleeve is installed in one positioning hole in the head portion of the guide fixing plate, and the adjustable guide assembly is installed in the other positioning hole in the head portion of the guide fixing plate. An adjustable guide assembly with an adjustable angle is arranged at the tail of the guide fixing plate, the adjustable guide assembly comprises two sighting device sleeves which are parallel to each other, olecranon hooks are arranged on the guide fixing plate on the two sides of the adjustable guide assembly respectively, and an osteotomy guide opening and a plurality of fixing holes are formed in the middle of 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, accurate osteotomy can be achieved during olecranon osteotomy, follow-up reduction and fixation are completed, and good clinical prognosis is achieved.

The invention relates to a screw planning method and a rod penetrating navigation method for a spinal screw placement operation. The method comprises the steps that initial screw positions are obtained through planning according to a screw planning algorithm, and the initial screw positions comprise the positions of a plurality of screws needing to be set; according to the initial screw position and the screw size, a target screw rod path meeting a preset optimization condition is screened, and a screw rod is used for penetrating through a plurality of screws; and determining the target screw position according to the target screw rod path. The problems that in the prior art, a screw planning algorithm has certain errors, needs to be manually adjusted in an open type operation and is difficult to apply to a minimally invasive screw placement operation are solved.

The utility model discloses a screw sealing ring installation jig which comprises a screw bottom plate, a sealing ring bottom plate and a screw cover plate, the screw bottom plate is provided with a plurality of screw placing holes used for placing screws, and the sealing ring bottom plate is provided with a plurality of sealing ring placing holes used for placing sealing rings. The number of the screw mounting holes is equal to that of the sealing ring mounting holes, the positions of the screw mounting holes correspond to that of the sealing ring mounting holes, the screw cover plate is provided with a plurality of screw suction grooves, and the number of the screw suction grooves is equal to that of the screw mounting holes, and the positions of the screw suction grooves correspond to that of the screw mounting holes. Compared with the prior art, the screw and sealing ring assembling device has the advantages that the screw bottom plate, the screw cover plate and the sealing ring bottom plate are arranged, so that the screw cover plate can complete assembling of screws and sealing rings in batches in a magnet mode, and working efficiency is improved.

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 embodiment of the invention is suitable for the technical field of computer-aided medical treatment, and provides a spinal surgery screw placement path planning method and device and a computer program product, and the method comprises the steps: obtaining a spinal image, and determining a spinal central axis based on the spinal image; determining a nail placement stop point according to the central axis of the spine; based on the screw placement stop points, a screw placement point candidate set is determined, and the screw placement point candidate set comprises a plurality of candidate screw placement points located on the spine transverse process; a candidate screw placement path formed by any candidate screw placement entry point and the screw placement stop point is determined; respectively calculating the distance from each bone surface edge point of the spine bone surface to each candidate screw placement path, and determining a screw placement point from the plurality of candidate screw placement points according to the distances; and planning a nail placement path based on the nail placement entry point and the nail placement stop point. By applying the method, the screw placement path of the spinal surgery can be automatically planned, and the accuracy and efficiency of screw placement path planning are improved.

The utility model relates to the field of medical instruments, and discloses an artificial vertebral prosthesis component which comprises a head end thread sleeve and a tail end bolt, an inner thread groove is formed in the inner wall of the head end thread sleeve, the head end thread sleeve is of a hollow structure, the outer wall of the tail end bolt is arranged on the inner wall of the inner thread groove, the outer wall of the tail end bolt is fixedly connected with a steel plate, and the steel plate is fixedly connected with the head end thread sleeve. A transverse plate is fixedly connected to the lower surface of the steel plate, the position of the steel plate is perpendicular to the position of the transverse plate, an open groove is formed in the transverse plate, and two screw containing grooves are formed in the open groove. According to the utility model, when the prosthesis is applied to the upper cervical vertebra, the head end screw head is placed through the inclined groove and the connecting groove to avoid the lower jaw blocking, the tail end screw is vertically placed through the open groove to avoid the lower jaw blocking, and when the prosthesis is applied to the lower cervical vertebra, the prosthesis is rotated by 180 degrees to avoid the blocking of the sternum and the like, so that the screws are smoothly placed and fixed; and the effect of stably mounting the prosthesis at different parts is ensured.

The utility model discloses an automatic tightening system, which belongs to the technical field of automatic equipment processing and comprises a Y-axis drive, a nail feeding device, a tightening device, an X-axis drive and a Z-axis drive. The problem that in the prior art, due to the fact that the screws are manually tightened and placed, the screws are not tightened or mistakenly tightened or obliquely tightened during tightening is solved. According to the device, manual tightening in the prior art is optimized, the key point of automatic screw tightening is the placement position of screws and whether the screws are missed to be tightened, mistakenly tightened or obliquely tightened or not after being tightened, so that the screw feeding device adopted by the device supplies screws to the tightening device in an automatic screw feeding mode, and the screw feeding efficiency is improved. The screw feeding device can supply the arranged screws to the tightening device, it is guaranteed that the screws are aligned to screw holes at the correct positions during tightening, meanwhile, the tightening device conducts automatic tightening, it is guaranteed that all the screws are stressed to be the same during tightening, the qualified rate of products needing to be tightened is guaranteed, and the production cost is saved.

The utility model provides a discharging device for a screw machine, which relates to the field of screw discharging and comprises a supporting assembly, a discharging assembly is arranged at the top of the supporting assembly, and the discharging assembly comprises a discharging disc. The first hole is matched with the second hole to place a screw, so that the upper end of the screw is located in the inner cavity of the first hole, the lower end of the screw enters the inner cavity of the second hole and the rubber sleeve, the upper end of the screw is limited through the first hole, the lower end of the screw is limited through the second hole and the rubber sleeve, and the suction cup can be in contact adsorption with a screw machine. A rubber pad is matched with a suction cup to buffer vibration generated by the screw machine, so that the vibration is relieved, the stability of the screws during placement is ensured, and the situation that the screws incline, shake and are stuck due to vibration is prevented, and an output shaft of a motor drives a transmission sleeve and a discharging disc to rotate; and therefore, the discharging disc can drive the screws to conduct position adjustment, and the later material taking convenience is improved.

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 belongs to the technical field of hip joint surgery dislocation approach, and particularly relates to a hip joint surgery dislocation approach osteotomy and screw placement guide assembly and a use method. The guide assembly comprises an osteotomy auxiliary plate and a screw guide plate. The osteotomy auxiliary plate is arranged on the outer side of the exposed greater trochanter femur of the patient and assists the external cutting device in conducting osteotomy operation on the greater trochanter of the femur of the patient. The screw guide plate is arranged on the outer side of greater trochanter of the thighbone of a patient after osteotomy is completed and used for positioning and guiding the at least two reset fastening screws. An osteotomy and screw placement guide assembly is designed in a conventional hip joint surgery dislocation approach operation, an osteotomy auxiliary plate and a screw guide plate are designed, and the osteotomy auxiliary plate comprises an osteotomy guide mechanism at a proper position and is used for accurately positioning the osteotomy position of a greater trochanter osteotomy block of a patient; the problem that in the prior art, when osteotomy is conducted on a patient completely depending on doctor experience, an osteotomy block is likely to be too large or too small or the osteotomy direction is dislocated is 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.

The utility model belongs to the technical field of medical instruments, and discloses a tibia osteotomy split guide plate which comprises a first guide plate body and a second guide plate body. The first guide plate body comprises a limiting block, a positioning rod fixedly arranged on the limiting block and a calibration block fixedly arranged on the limiting block, the end of the positioning rod is a first fitting curved surface attached to the upper bone surface of the tibia, and a force line hole is formed in the calibration block; an osteotomy groove is formed in the second guide plate main body, a screw placement hole is formed in the second guide plate main body, and one end of the second guide plate main body is a second fitting curved surface attached to the tibia side bone surface; the limiting block and the second guide plate body are connected through an insertion structure. According to the utility model, the screw can be placed once, the uniqueness of the screw channel is ensured, and the positioning accuracy and the success rate of osteotomy 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 utility model relates to the technical field of medical equipment, in particular to a guide device for assisting in imbedding a locking screw, which is characterized by comprising an inner sleeve, an outer sleeve and a guider, a guide groove is arranged on the guider, and the guide groove penetrates through two ends of the guider; a second threaded hole is formed in the position, located on one side of the guide groove, of the guider, and the guide groove and the second threaded hole are perpendicular to each other and communicate with each other. The outer sleeve is arranged in the guide groove and can move in the length direction of the guide groove, and the inner sleeve is sleeved with the outer sleeve in a sliding mode. The guider is made of a titanium alloy material with strong plasticity, is simple and convenient, is low in manufacturing price, is light in weight, is convenient to operate in an operation, and can be repeatedly used after being disinfected; the purpose of minimally invasive surgery is achieved through the guider, blood supply of bones at the fracture end and surrounding muscles of the bones is not damaged, bleeding in the surgery is little, and the probability of injury to nerves and blood vessels of limbs is small.

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 invention provides a solid screw imbedding device matched with an orthopedic surgery robot for use. The solid screw imbedding device comprises a fixed sleeve (1), a screw rod (2) and a screw rod (3), wherein the fixed sleeve (1) is mounted on a mechanical arm tail end guider (7) of the orthopedic surgery robot; the fixing sleeve (1) is of a hollow cylindrical structure, and the depth adjusting screw (2) is installed in one end of the fixing sleeve (1) through the fixing knob (3). The fixed knob (3) is sleeved at one end of the fixed sleeve (1); the depth adjusting screw (2) is in threaded connection with the fixed sleeve (1); a hollow pipeline is arranged in the depth adjusting screw (2), and a drill bit (6) is arranged in the hollow pipeline in a penetrating mode. The device has very high repeated installation precision and higher screw placement precision and imbedding accuracy, the depth can be determined by observing the scale of the pointer, the device is visual and rapid, meanwhile, the device can be matched with insertion blocks of drill bits with different diameters, the drill bits with different specifications can be rapidly replaced, and the device is firm and reliable.

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.