520 results about "Bone screws" patented technology

Apparatus and methods are described for use in securing a first bone relative to a second bone using a pair of surgical staples or, alternatively, a surgical staple and a bone screw. When a pair of staples are used, one of the legs of one of the staples may pass between the legs of the another of the staples. When a staple and a bone screw are used, the bone screw may pass between the legs of the staple. A guide tool can be used during the drilling of the holes for the legs of the staples or the legs of the staple and a bone screw. The guide tool provides guides for drilling guide holes for the staples or for the screw and staple.

A periprosthetic plate and method of use are disclosed that includes a proximal segment having a top portion and an end portion with at least two curved hooks that are capable of passing through a patient's abductor muscles and rest medially on a tip of a patient's greater trochanter (GT), wherein the proximal segment includes a plurality of recessed bone screw holes. A periprosthetic proximal femur plate is disclosed that includes a head portion having at least six first polyaxial screw holes and a shaft portion connected to the shaft portion having a plurality of rows of at least two second polyaxial screw holes located at an angle from the horizontal from about thirty degrees to about sixty degrees. A combination periprosthetic proximal femur plate and greater trochanter (GT) plate construct is disclosed that includes a greater trochanter (GT) plate located on top of the periprosthetic proximal femur plate.

Disclosed are bone screw drill targeting guides and methods for using such targeting guides that are useful in surgical procedures for correcting hallux valgus deformity.

The invention discloses a metal bone screw defect detection method based on image processing, and relates to the technical field of screw defect detection, and the method comprises the following steps: building a screw image collection scene, and collecting a screw image; the collected screw image is preprocessed, and a precise screw image is extracted; performing region division on threads in the accurate screw image to obtain thread regions; carrying out defect analysis on the thread partitions, and judging whether the thread partitions have defects or not; the method is used for solving the problems that an existing screw defect detection technology is too dependent on a preset threshold value, the subjective influence is too large, and the defect detection result of the screw is prone to errors.

A rhomboid shaped spinal implant may include a proximal surface that extends from a first lower end to a first upper end thereof a first distance, and a distal surface that extends from a second lower end to a second upper end thereof a second distance. The implant may include a superior surface that extends from the first upper end of the proximal surface to the second upper end of the distal surface a third distance, and an inferior surface that extends from the first lower end of the proximal surface to the second lower end of the distal surface a fourth distance. In various embodiments, the first distance is greater than the second distance, and the third distance is less than the fourth distance. In some embodiments, at least one bone screw aperture defines a trajectory extending in a direction substantially perpendicular to the superior and / or inferior surface.

A uniplanar bone anchor including a housing and a bone screw is provided. The lower region of the housing defines mating elements that mate with engaging elements on the bone screw to limit movement of the housing relative to the bone screw to a single plane.

A bone screw implant comprising a bone screw and a sleeve rotatably coupled with the bone screw. The bone screw includes a shank having a first end and a second end, the shank defining a longitudinal axis extending between the first end to the second end, the first end having a first engagement geometry extending about the shank and the second end having a tip. The bone screw includes an external threading extending along the shank and at least one cutting flute configured to gather and retain bone shavings. The sleeve includes a body portion having an external surface and a bore forming an internal surface, the internal surface having a second engagement geometry extending about the bore, where the first engagement geometry and the second engagement geometry allow the sleeve to rotate freely relative to the bone screw.

Bottom-loading bone anchor assemblies and components thereof are disclosed that have a reduced profile and can be utilized with bone screws of various size. Bone anchor assemblies of the present disclosure can include a receiver member, a drag retaining ring, and a shank. The retaining ring and shank can be inserted proximally into a bore of the receiver member. The drag ring can have a base and a walled portion extending proximally therefrom. The drag retaining ring can be disposed in a groove of the receiver member with the base forming a seat for the shank head that can hold the shank within the receiver. The walled portion of the drag retaining ring can impart a drag force on the shank head seated in the base to prevent unintended movement between the shank and the receiver member.

Holders for bone screws, kits including a holder and one or more bone screw, and methods of loading a screw onto a driver for driving the screw into a bone are described. A holder for a bone screw includes a main body having a first surface and a second surface. The main body defines a retainer having first and second arms, each of which is a flap of the main body that is movable from a first configuration, in which the respective arm is coplanar with the adjacent portions of the main body, and a second configuration in which the respective arm extends away from the adjacent portions of the main body. The first and second arms are biased toward returning to the first configuration in which the respective arm is coplanar with adjacent portions of the main body.

Disclosed are bone screw drill targeting guides and methods for using such targeting guides that are useful in surgical procedures for correcting hallux valgus deformity.

The invention discloses an intramedullary nail system for long bone fracture treatment, which belongs to the field of medical instruments and comprises a rod-shaped main body, a limiting assembly, a transmission assembly and a bone plate, the rod-shaped main body is provided with an implanting section and a connecting section which are connected with each other, a first cavity is formed in the implanting section, a second cavity is formed in the connecting section, the first cavity is communicated with the second cavity, and a through hole is formed in the wall of the implanting section; the limiting assembly is provided with a mounting part, a rotating shaft and rotating blades; the rotating shaft is arranged in the first cavity; one end of the rotating blade is arranged on the rotating shaft, and the other end is movably arranged in the through hole or extends out of the through hole; the transmission assembly is arranged in the second cavity and is in transmission connection with the rotating shaft; the bone plate is fixedly connected with the connecting section, and a plurality of channels for bone screws to pass through are formed in the bone plate. When the screw-out angles are the same, the extending radial lengths of different rotating blades can be different due to different acting forces between the rotating blades and the marrow cavity wall so as to better adapt to the irregular marrow cavity wall.

The invention relates to the technical field of orthopedic biomedical treatment, in particular to a proximal humerus fracture intramedullary bone cement supporting rod. The bone fracture plate comprises a bone fracture plate body, a plurality of first connecting holes and a plurality of second connecting holes are formed in one side of the bone fracture plate body in a penetrating mode, and solid bone nails are arranged in the first connecting holes. According to the device, bone cement is injected into a marrow cavity from an injection molding channel and an injection molding opening and then solidified into a rod body, the marrow cavity space is tightly filled, supporting structures are synchronously formed on the inner side and the outer side of the humerus through cooperation of a bone fracture plate and a bone cement supporting rod in the marrow cavity space, and therefore stress generated when arms of a patient move is evenly dispersed on the two sides of the humerus; the fixing stability is remarkably improved, the risk of internal fixation failure such as steel plate displacement and screw cutting is effectively reduced, and the bone cement supporting rods can further prevent displacement of fracture blocks, promote fracture repair, relieve extrusion and friction of surrounding tissue of a filling position, reduce inflammatory response and postoperative pain and improve the rehabilitation comfort of a patient.

A dual interface screw element includes a screw body (10) with an external thread (12) and two distinct engagement interfaces (13, 15), one for inserting the screw and another for removing it. The removal engagement interface (15) includes a reverse thread (16) located in an axial recess (36) such that a complementary reverse-threaded tool (24) applying torque to extract the screw body is tightened against the second engagement interface. The screw is part of a system including an extraction tool (24) and an insertion tool (18). Applications include medical applications such as dental implants and bone screws, domestic applications such as headless wall mounting anchors, and a wide range of other industrial and aerospace applications.

The present invention discloses a novel bone transport intramedullary nail, comprising an intramedullary nail main nail, the intramedullary nail main nail is a hollow structure, the intramedullary nail main nail comprises an intramedullary nail proximal end and an intramedullary nail main body, the intramedullary nail proximal end and the intramedullary nail main body are an integrated structure, the intramedullary nail proximal end has a diameter greater than the diameter of the intramedullary nail main body, the intramedullary nail proximal end is provided with a through dynamic screw hole and a static screw hole, an adjustment hole is provided on the intramedullary nail main body away from the intramedullary nail proximal end, a dynamic bone screw is installed in the dynamic screw hole, the dynamic bone screw can move axially along the dynamic screw hole, a tail cap is installed on the proximal side of the intramedullary nail, an elastic body 1 is provided between the tail cap and the dynamic bone screw, and a bone transport device for adjusting the movement of the fracture end is provided on the intramedullary nail main body. The elastic device can give stress stimulation to the bone segment, avoid stress shielding, accelerate fracture healing, reduce delayed fracture healing and non-union, and reduce the incidence of re-fracture after removing the intramedullary nail.

The invention provides a self-reinforced absorbable composite material containing a polyester fiber / calcium phosphate substance. The absorbable bone screw and the absorbable bone plate prepared from the polyester fiber self-reinforced absorbable composite material provided by the invention have the advantages that the mechanical property is obviously improved, the degradation rate is controllable, the bone tissue regeneration induction time is shortened, the aseptic inflammation is relieved, the individual difference is small, and the processing efficiency is obviously improved. According to the absorbable composite material prepared by the invention, the polyester fibers and the polyester matrixes are various, and the mechanical property and the degradation rate of the composite material can be regulated and controlled through matching and combination of the fibers and the matrixes, so that the clinical requirements of fixing different fracture injuries are met; moreover, high-activity calcium phosphate substances doped with specific elements such as zinc, strontium and magnesium are further adopted, so that the aseptic inflammation caused by acidic degradation substances can be relieved, and higher osteogenic activity, higher angiogenesis promoting capability and the like are realized, so that injured bone tissues are induced to be healed more quickly.

A bone fixation system for reconstruction and / or trauma treatment of bones, the bone fixation plate comprising: a bone fixation plate configured and dimensioned for application to a patient's bone, the bone fixation plate comprising an in-use upper surface and an in-use lower surface with at least one opening formed on the upper and lower surfaces to form a passage extending from the upper surface to the lower surface; each passage being defined by inner walls extending from the upper surface to the lower surface, the inner walls having a height extending between the upper surface and the lower surface, the inner wall further comprising: a threaded inner wall portion extending from the upper surface towards the lower surface, the threaded inner wall portion having threads with a thread pitch (PW); and a non-threaded lower inner wall portion extending from a lower part of the threaded inner wall portion towards the lower surface of the bone fixation plate; and at least one bone screw with a threaded screw head having threads with a thread pitch (PH) for engaging and interfacing with the threaded inner wall for variable angle anchoring of the threaded screw head during use.

A pivotal bone screw assembly includes a threaded shank body having an integral upper portion receivable in a receiver, with the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. The assembly also includes a downloadable compression insert with a side arm extension for engagement and compression by a vertically-translating insert side compressing member so as to lock the assembly independent of the closure top.

Various bone cement guides are disclosed that may connect directly to a fenestrated bone screw or connect to a spinal construct that is coupled to a fenestrated bone screw. In various embodiments, cement guides may include a three-part assembly including a hollow outer sleeve and a hollow inner sleeve with a removable inner rod. In various embodiments, the hollow inner sleeve may be movable between a retracted position and an extended position and in the extended position a distal end of the inner sleeve may splay outward and capture the head portion of a fenestrated bone screw. In other embodiments, a distal end of the outer sleeve may surround and capture tabs of an extended tulip head connector while the inner sleeve couples to an inside surface of the extended tulip head connector.

Implantable devices and assemblies that provide a friction fit between a receiver and a fastener, such as a bone screw. A frictional force is applied between the screw head and both a retention ring and a pressure insert, maintaining and stabilizing the orientation of the receiver relative to the screw head before being fixed by a set screw. This mechanism prevents drooping or slipping of the receiver out of alignment when implanted. Additionally, the devices allow for modular assembly before or during spinal fixation, enabling bottom-side loading of the screw head into the receiver. Various screws with different characteristics can be coupled to the receiver body before or after implantation. The frictional force may be facilitated by one or more ridges on the receiver body that engage the pressure insert, which is resiliently urged against the screw head, providing a spring-like compression force.

A trochanteric nail for insertion in an intramedullary canal of a bone for treating bone fractures. The nail may include an elongate body having a head portion and a stem portion. One or more openings may be provided in the head portion for receiving an anchoring member, such as a bone screw, for fastening the nail within the bone. An intermediate opening may also be provided in the stem portion for receiving an anchoring member. A distal area of the nail may include or be free from anchoring members. In addition, a set of nails may be provided with each nail of the set of nails having a different length in which the intermediate opening is the same distance from the proximal end for each nail.

A multi-stage minimally invasive surgical procedure and associated instruments are disclosed. First, the surgical site is prepared. After preparation, the bone screws or anchors are attached to the bone. Subsequent to insertion of the screws, a rod or connecting member is positioned within the yoke portion of the bone screw. Caps are then placed in a pre-lock position within the yokes. The bone screws may be compressed together or distracted along the rod or connecting member, thereby setting the final spacing of the bones or bone segments. Finally the caps are moved to a final lock position to fix the screws to the rod or connecting member to maintain the bones in position relative to each other.

The invention discloses a robot calibration method for spine endoscopic surgery, which comprises the following steps: S1, optical marking points are pasted on the skin or bony structure of a patient, the skin marking is used for fixing a reflective ball by using a medical adhesive tape, the bony marking is percutaneously implanted into a spinous process or crista iliaca through a titanium alloy bone nail, and at least six marking points are needed. According to the method, minimally invasive property and stability are both considered through a double marking strategy, six points cover three vertebral bodies to ensure the integrity of an anatomical range, registration errors caused by breathing / body position changes are reduced, meanwhile, non-rigid registration is combined with a B spline grid (10 mm) to consider calculation efficiency and spine physiological curvature adaptability, high-precision surface reconstruction is achieved through a Marching Cubes algorithm, and the method has the advantages of being high in precision and high in precision. An error suppression mechanism is formed by + / -0.25 mm precision and redundancy measurement (five times of sampling) of the optical tracking system, registration robustness is improved through SVD and ICP double-algorithm complementation, multi-constraint path planning is achieved through an A * algorithm and Monte Carlo simulation, and a 4 mm safety corridor provides a buffer space for instrument errors.

The invention relates to a device (1) for treating a fracture, in particular a fracture of a proximal femur such as, for example, a femoral neck fracture, having a plate (3) for attaching to a thigh bone, one or more intraosseous screws (10) by means of which the plate (3), through intraosseous screw openings (14), can be fixed to a thigh shaft (4), a coupling device, in particular a bone screw (5), which is arranged proximally to the at least one intraosseous screw (10) and by means of which the plate (3) can be connected at a coupling device opening (6) through the thigh shaft (4) and a thigh neck (2) to a thigh head (7), wherein the coupling device is connected to the plate (3) with play (21) such that the coupling device can be moved in the lateral direction (8) relative to the plate (3). In order to achieve a particularly precise and simultaneous adjustability of the play (21), according to the invention an adjusting device is provided which is connected to the plate (3), which can be positioned at different positions relative to the plate (3) and by means of which the play (21) can be adjusted.

The invention provides a nail taking device and a nail taking method for the orthopedics department, and relates to the technical field of equipment for orthopedic surgery. The orthopedic nail taking device comprises a base, an operating bed, a second box body, a first box body, two adjusting plates and a nail taking head, the operating bed is fixedly installed at the top of the base, the two adjusting plates are fixedly installed on the two sides of the operating bed respectively, the nail taking head is arranged at the top of the operating bed, and the first box body and the second box body are fixedly installed at the top of the base. The two adjusting plates are rotatably provided with the same operation frame, the top of the operation frame is slidably provided with a cylinder body, the top of the cylinder body is rotatably provided with a limiting cylinder, and the top of the limiting cylinder is provided with a second lead screw in a penetrating manner. The nail taking device for the orthopedics department has the advantages of being convenient to use, capable of preventing a bone nail from loosening and falling off, capable of preventing the bone nail from falling into surrounding tissue due to accidental loosening in the screwing-out process, capable of cleaning the bone nail in time, and capable of preventing impurity drying and cleaning difficulty increase caused by waiting for cleaning.

The invention relates to a bone screw image recognition system and method.The system comprises a TOF camera, a robot, a detection platform, a camera, a light source and a processor, and the method comprises the steps that coordinate information of a screw box is scanned and recognized through the TOF camera, the arrangement mode of bone screws in the screw box is calculated, and row and column data are obtained; according to the row and column data, the processor correspondingly controls the robot to move the bone screws out of the screw box and place the bone screws on the detection platform; the processor correspondingly controls and adjusts the working states of the lamp source, the camera and the robot to obtain a bone screw image; identifying bone screws from the bone screw image, cutting out an independent image of each bone screw, and marking to obtain a marked image; and cutting the labeled image into a rectangle by the processor, and identifying English letters, characters and numbers in the rectangular area again to obtain a bone screw identification result. Compared with the prior art, the bone screw image can be automatically, efficiently and accurately shot, and the recognition result can be obtained.

A method for facilitating stabilization of a sacroiliac joint is provided. The method includes surgical and stabilization techniques for implanting bone anchors or fasteners such as a first bone screw, a second bone screw, and third bone screw in a pelvis traversing portions of a coxal bone and a sacrum, and extending through or adjacent at least a portion of a corresponding sacroiliac joint. The bone anchors or fasteners such as the first bone screw, the second bone screw, and the third bone screw can be inserted at different angles and locations to form a lattice structure that serves in securing the position of a coxal bone and a sacrum relative to one another to facilitate stabilization across a corresponding sacroiliac joint.

Apparatus and methods are described for use in securing a first bone relative to a second bone using a pair of surgical staples or, alternatively, a surgical staple and a bone screw. When a pair of staples are used, one of the legs of one of the staples may pass between the legs of the another of the staples. When a staple and a bone screw are used, the bone screw may pass between the legs of the staple. A guide tool can be used during the drilling of the holes for the legs of the staples or the legs of the staple and a bone screw. The guide tool provides guides for drilling guide holes for the staples or for the screw and staple. The guides can be fixed relative to each other during drilling of the guide holes.

A medical set for the distraction of vertebral bodies, in particular in the treatment of vertebral body fractures, for use with at least a first and a second holding element (10, 11), wherein each of the holding elements (10, 11) comprises a distal section (12, 13) and a proximal section (14, 15) with a proximal end (16, 17) for receiving a bone anchor (18), in particular a bone screw, wherein the set has at least one compression device (19) which, in use, can be connected to the distal section (12, 13) of each of the first and second holding elements (10, 11) and is designed to change the distance between the distal sections (12, 13) of the first and second holding elements (10, 11), wherein the set has at least one spacer device (20) with a first receiving element (21) and a second receiving element (22),wherein the first receiving element (21) is designed for arrangement on the first holding element (10) corresponding to a shoulder portion (23) of the proximal portion (14) of the first holding element (10) and the second receiving element (22) is designed for arrangement on the second holding element (11) corresponding to a shoulder portion (24) of the proximal portion (15) of the second holding element (11) in order to form a rotational region and / or to induce a rotation of the holding elements (10, 11) about the shoulder portions (23, 24) when the distance between the distal portions (12, 13) of the first and second holding elements (10, 11) changes due to the compression device (19).

A bone fixation assembly includes a bone plate, a first bone screw and a second bone screw. The first and second bone screws penetrate through two holes respectively. The first bone screw has a left-handed thread while the second bone screw has a right-handed thread. With different thread directions of the bone screws, the bone screws are hard to be loosened so that broken bones are fixed firmly. Accordingly, size of the bone plate is able to be reduced for miniaturization.

An implant includes an interbody device having a front, a rear, a first lateral side, a second lateral side, a central cavity, and a plurality of bores extending into the rear of the interbody device, each arced bore being configured to receive an arced anchoring member.