63 results about "Fracture block" patented technology

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.

The utility model relates to the technical field of medical instruments, and discloses a thighbone far-end special-shaped block and a bridge connecting and fixing device, and the bridge connecting and fixing device is composed of a connecting rod, the thighbone far-end special-shaped block and a sliding block. The edge of the femur far-end special-shaped block is in an arc shape, a first locking screw hole, a second locking screw hole and a third locking screw hole are formed in the outer surface of the femur far-end special-shaped block along the arc-shaped position of the edge, and a fifth locking screw hole, a sixth locking screw hole and a seventh locking screw hole are formed in the middle of the femur far-end special-shaped block in a circumferential array mode. An eighth locking screw hole is formed in the outer surface of the tail of the thighbone far-end special-shaped block, two connecting holes are formed in the outer surface of the tail of the thighbone far-end special-shaped block, and first through holes are formed in the positions, located on the transverse left side and the transverse right side of the eighth locking screw hole, of the thighbone far-end special-shaped block; and cross holes staggered with the connecting holes are formed in the first through holes. The fixing plate is stable in implantation, the inner side of the far end of the femur is firmly fixed, the stress of the fixing plate is more uniform, and the healing effect of inner side fracture blocks is promoted.

The application belongs to the technical field of medical image processing, and particularly relates to a kind of bone fracture block automatic reduction methods based on medical image;Including: obtaining the three-dimensional medical image data and three-dimensional label data after fracture of the object to be processed, and pre-processing the three-dimensional medical image data after fracture;The three-dimensional medical image data after fracture is input into the fracture surface segmentation model trained, and the main bone surface area and fracture block surface area are obtained;Three-dimensional coordinates are extracted and main bone surface point cloud and fracture block surface point cloud are constructed;Iterative closest point registration is carried out on the two kinds, and the cumulative rigid body transformation parameter is obtained;The voxel coordinate set corresponding to the fracture block is determined, and the voxel coordinate set is subjected to spatial transformation using the cumulative rigid body transformation parameter, to obtain the three-dimensional label result after reduction;The application can simultaneously complete the problems of automatic identification of fracture section and automatic solution of fracture block reduction posture, improve the degree of automation, result stability and interpretability of fracture block reduction process.

This invention relates to the field of connecting rod processing technology, specifically to a fracture device and method for connecting rods in large machinery. The device includes a laser marking machine worktable, a fracture device worktable, and a connecting rod. A laser marking machine and a laser marking feeder are mounted on the upper end of the laser marking machine worktable. A fracture device is mounted on the upper end of the fracture device worktable. The laser marking feeder and the fracture device are used for positioning the connecting rod. The laser marking feeder includes a small-end positioning pin and a large-end positioning pin. The small-end positioning pin is used for positioning the small end of the connecting rod, and the large-end positioning pin is used for positioning the large end of the connecting rod. The fracture device includes a small-end positioning component and a fracture block. The small-end positioning component is used for positioning the small end of the connecting rod, and the fracture block is used for limiting the fracture of the large end of the connecting rod. Compared to existing sawing processes for connecting rods in large machinery, the laser marking fracture process of this invention simplifies the processing flow and improves the performance of the connecting rod.

The application discloses a three-axis motion parallel reset mechanism for closed reset of a pelvic fracture, which comprises a sick side pelvic fracture reset robot and a healthy side fixing device, and the sick side pelvic fracture reset robot comprises a movable base, a three-axis moving device, a three-axis rotating device, a reset force detecting device and a sick side screw holding device. Through the above structure, six-degree-of-freedom translation and rotation of a fracture block can be realized, and the reset force change can be monitored in real time, thereby providing a guarantee for operation safety. The three-axis rotating device is connected in series through a U-shaped frame, has a smaller space occupation than a traditional ball pair, can be close to the upper surface of a human body during reset, has a short force arm and can provide a larger reset force. The robot has the advantages of compact structure, high precision, large load force, high flexibility, large working space, a spatial virtual point as a motion center, adjustable position according to a patient and a fracture type and convenient operation.

The invention provides a fixing steel plate for proximal humerus comminuted fracture, and relates to the technical field of proximal humerus fracture, the fixing steel plate comprises a main steel plate with a connecting hole and a branch steel plate fixed with the main steel plate through the connecting hole; a plurality of extending claws are arranged on the side, away from the main steel plate, of the branch steel plate, and fixing structures are arranged at the ends of the extending claws and can connect bone fragments and make the bone fragments tightly attached to the main bone. The branch steel plates can be strip-shaped or ring-shaped, and the extension claws can be integrally formed or detachably combined. The problems that a traditional steel plate can only be placed on the outer side, and when fractures are smashed, the upper rear large nodule and the inner fracture blocks are difficult to fix and prone to displacement or internal fixation fails are solved, all-directional fixation is achieved, the steel plate is suitable for different fracture scenes, operative wounds are reduced, and shoulder joint function recovery is assisted.

The femoral multi-dimensional interlocking intramedullary nail structure comprises an aiming support, the top of the aiming support is connected to one end of a connecting handle, the other end of the connecting handle is connected to an intramedullary nail, and the two sides of the top of the aiming support are connected to one end of a left support and one end of a right support respectively; a left sleeve is inserted into the other end of the left support, a right sleeve is inserted into the other end of the right support, a left cross nail is connected to the end of the left sleeve, a right cross nail is connected to the end of the right sleeve, an aiming tube is inserted into the bottom of the aiming support, and a blade nail is connected to the end of the aiming tube. According to the internal fixation device, proximal femur fracture accompanied by split fracture of the outer side wall of greater trochanter of femur and small fracture blocks around the greater trochanter are held, so that firmer internal fixation is achieved, and internal fixation failures such as nail withdrawing and nail breaking caused by poor holding can be effectively prevented.

The invention relates to the technical field of medical instruments, in particular to an internal fixing structure for posterior cruciate ligament tibia dead center fractures, which comprises a tail plate, a plurality of movable screw holes are formed in the front side of the tail plate in a penetrating manner, a plurality of locking screw holes are formed in the rear side of the tail plate in a penetrating manner, and two head plates are fixedly mounted at the front end of the tail plate. A notch is formed between the two head plates, a plurality of fixing screw holes are formed in the surfaces of the head plates in a penetrating mode, sliding grooves are formed in the positions, close to the edges, of the left side and the right side of each head plate, and deformable needles formed in a bent mode are arranged in the sliding grooves. By dissecting the attached head and tail plate structures, adopting an encircling type fixing mode and adopting the combined design of the adjustable deformable needles and multiple types of screw holes, multi-angle, dispersive and pressurized stable fixing of the tibia dead center fracture blocks is achieved, and ligament protection and operation flexibility are taken into account while the fixing strength and stability are improved.

The utility model relates to the technical field of locking steel plates for proximal humerus fracture, in particular to a locking steel plate for proximal humerus greater tuberosity rotator cuff stop point fracture, which comprises a locking steel plate body and a top end fixing component used for fixing a small fracture block of a rotator cuff stop point, the top end fixing assembly comprises a positioning plate integrally connected with the top end of the locking steel plate body, a screw hole and a suture hole which are formed in the positioning plate, and a screw which penetrates through the screw hole to fix the positioning plate and a small fracture block at a rotator cuff dead point on a proximal humerus greater tubercle; the top end fixing assembly is arranged on the locking steel plate body, the positioning plate extends in the direction away from the top end of the locking steel plate body and covers a rotator cuff stop point, and the positioning plate and the top end of the locking steel plate body form an attaching face attached to the proximal humerus greater tubercle. And the firm fixation of the rotator cuff dead point bone block is realized.

The utility model relates to a displacement reduction device for a fracture block in a spinal canal. The displacement reduction device comprises a holding part, a first connecting rod, a second connecting rod and a reduction part, the reduction part comprises a correction rod, a reduction rod and an epidural mater protection rod; the middle of the reset rod is an arc bent section, and two ends are linear sections. One surface of the correcting rod is connected with the end part of the second connecting rod; the linear section end part of one end of the resetting rod is connected with the correcting rod; the convex surface of the arc bent section of the reset rod faces the holding part; the end part of the linear section at the other end of the reset rod is connected with the dura mater protection rod; and the dura mater protection rod faces the direction of the holding part. The arc bent section of the reduction rod is more attached to an irregular fracture block, and meanwhile the correction rod can better support and stabilize the fracture block to be reduced in the operation process and prevent the fracture block from deviating and rolling. By arranging the dura mater protection rod on the reduction rod, when the fracture block is reduced, the compression of the spinal cord is directly relieved, the dura mater, the spinal cord and nerves can be prevented from being damaged, and iatrogenic secondary injury to a patient is avoided.

The invention relates to the technical field of fracture reduction forceps, in particular to reduction forceps for metacarpal bone comminuted fracture, which comprise a forceps handle I and a forceps handle II, a rotating shaft is mounted at the intersection of the forceps handle I and the forceps handle II, limiting blocks are mounted on the inner sides of the upper ends of the forceps handle I and the forceps handle II, an elastic piece is mounted between the two limiting blocks, and the elastic piece is connected with the rotating shaft. A guide frame is installed on the first plier handle, a fixed plier head is installed at the lower end of the first plier handle, and an adjustable plier head is fixedly installed at the lower end of the second plier handle. The precise adjusting mechanism composed of the telescopic shaft, the ball head unit and the multiple tong head units is arranged in the adjustable tong head, so that a doctor can conduct synchronous or respective precise angle adjustment on the multiple tong head units according to spatial distribution of metacarpal bone comminuted fracture blocks; by means of the mechanical arm, multiple clamping points can be derived from one entry point, multiple bone blocks in different planes and at different angles can be synchronously clamped, the three-dimensional structure of the metacarpal bone is effectively recovered, and the mechanical arm is suitable for complex comminuted fractures.

The invention provides a fracture blocking rate inversion method based on GNSS earth crust deformation observation and elastic dislocation theory constraint, and the method comprises the steps: constructing a fracture three-dimensional model and an elastic dislocation constraint model, and calculating a fracture blocking rate. Through multi-period result comparison, strain field verification and earthquake activity verification, a high-risk region of pregnancy and earthquake can be identified. According to the method, the GNSS earth crust deformation observation elastic dislocation theory is adopted to constrain the negative dislocation model, and the precision and stability of fracture blocking rate inversion are remarkably improved. According to the invention, multiple periods of GNSS data are integrated to realize dynamic inversion, and the evolution trend of the locking state can be captured. According to the method, secondary blocks are finely divided, strain rate field constraints are introduced, locking distribution of a local strain enhancement area is accurately identified, the reliability of judgment of a large earthquake risk area is improved, a fracture high-locking-rate area is defined, through theoretical constraint and multi-source data fusion, the fracture locking rate inversion precision and the dynamic capture capability are improved, and the method is suitable for large-scale popularization and application. And reliable technical support is provided for earthquake risk assessment.

Disclosed in the present invention is a tandem-type three-axis motion reduction robot for closed reduction of pelvic fracture, comprising an affected side pelvic fracture reduction robot and a healthy side fixing apparatus. The affected side pelvic fracture reduction robot comprises a movable base, a three-axis moving apparatus, a three-axis rotating apparatus, a reduction force detection apparatus, and an affected side screw holding apparatus. By means of the above structure, six-degree-of-freedom translation and rotation of a fracture block can be achieved, and the change of the reduction force is monitored in real time, thereby providing a guarantee for surgical safety. The three-axis rotating apparatus is connected in series by means of a U-shaped frame, occupies a smaller space than a traditional ball pair, can be close to the upper surface of a human body during reduction, and has a short force arm, such that a larger reduction force can be provided. The robot features compact structure, high precision, large loading force, high flexibility, and large working space; the motion center of the robot is a spatial virtual point, the position is adjustable according to patients and fracture types, and thus the operation is convenient.

The invention discloses a screw device for minimally invasive treatment of tibial plateau fracture under an arthroscope, and belongs to the technical field of medical science, the screw device comprises two steel plates, the two steel plates are symmetrically arranged below the end part of a grab handle, the two sides of each steel plate are respectively provided with a screw sleeve and a screw cap, and the positions of the screw sleeves and the screw caps on the two steel plates are opposite; a screw is horizontally connected into the threaded sleeve in a threaded mode, the other end of the screw penetrates out of a nut corresponding to the screw and is in threaded connection with the nut, plugs are inserted into grooves in the two sides of the steel plate, inserting grooves attached to protrusions on the plugs are formed in the grooves, the plugs are fixedly connected to a frame corresponding to the plugs, and the inserting grooves are fixedly connected to the steel plate. The two frames are arranged at the end part of the grab handle in a sliding manner; the guide assembly is used for guiding the two steel plates in a sliding mode, and the fastening assembly is used for enabling the two screws to synchronously penetrate into the nuts; according to the invention, the stability of fracture block fixation can be improved.

The invention relates to the technical field of medical treatment, in particular to an ankle joint fracture reduction assisting method under the guidance of a digital image, which comprises the following steps: acquiring CT image data of an ankle joint fracture part of a patient, and setting CT scanning parameters in the acquisition process; importing the CT image data into medical image processing software for three-dimensional reconstruction to obtain an original three-dimensional fracture model; performing measurement and virtual reduction of a fracture block on the original three-dimensional fracture model to obtain a three-dimensional fracture model after reduction; planning a surgical approach and a placement position and angle of an internal fixture based on the three-dimensional fracture model after reduction; real-time image data are collected in the operation process, registration fusion is conducted on the real-time image data and the reset three-dimensional fracture model, a visual guide image is generated, and real-time navigation is provided for operation. According to the method, the reproducible end-to-end process is formed through the steps, the process difference between different operators / hospitals is remarkably reduced, and the aims of resetting and fixing are kept consistent in the pre-operation according to the result.

The utility model provides a novel screw for fracture fixation, and relates to the field of medical instruments, the novel screw comprises a screw main body and a screw nested in the main body, and the tail part of the screw is provided with a folding blocking unit so as to improve the overall stability of the screw. A first thread part is arranged in the middle of the screw, and second thread parts extend out of the two ends of the screw and used for being connected with the supporting ring, the anti-disengaging backing ring and the nut to form a stable double-thread structure. The structure can be gradually screwed in the fracture fixing process, so that the device can adapt to different bone parts, and postoperative displacement is prevented through the anti-falling part. The folding blocking unit is composed of an installation ring, an annular piece and a plurality of sets of folding plates which can be movably connected, the small fracture blocks can be pressed tightly in the installation process, and the small fracture blocks are prevented from slipping in the healing process. The device is simple in structure, convenient to disassemble and assemble, high in applicability, capable of remarkably improving the fixing effect of a fracture part, especially suitable for fixing small free fracture blocks in orthopedic surgery and capable of promoting healing.

This invention relates to the field of medical devices. To address the technical problems of easy loss of reduction, uncontrollable pressure, and poor reduction stability when fixing a quadrilateral acetabulum in existing technologies, this invention proposes a pressure-type anatomical reduction device specifically for the quadrilateral acetabulum. The device includes a pressure reduction plate and a limiting fixation plate. One end of the pressure reduction plate is connected to one end of the limiting fixation plate via an arc-shaped connecting section. A conical positioning post is provided on the other end of the limiting fixation plate for pre-positioning a second fracture fragment. The extension direction of the conical positioning post intersects with but is not perpendicular to the axis of the limiting fixation plate. At least one limiting screw hole is provided on the limiting fixation plate, through which the limiting fixation plate attaches and positions the second fracture fragment. Multiple reduction screw holes are provided on the pressure reduction plate, through which the pressure reduction plate applies pressure to reduce the first fracture fragment. Furthermore, this invention also proposes a method for using the pressure-type anatomical reduction device specifically for the quadrilateral acetabulum.

The utility model discloses a nail plate for tibia, and relates to the technical field of nail plates. The nail plate for the tibia comprises a repairing plate, the repairing plate is in a sickle shape, one end of the repairing plate is in an arc shape, a first left inclined groove and an upper inclined groove are formed in the repairing plate, a first fixing nail is arranged in the first left inclined groove, a second fixing nail is arranged in the upper inclined groove, and the first left inclined groove and the second left inclined groove are communicated with each other. The mounting direction of the first fixing nail faces the left side, the mounting direction of the second fixing nail faces the inclined upper side, the repairing plate is made of a titanium alloy material, and a medical sterile silica gel pad is arranged on one side of the repairing plate. And four thin grooves are formed in one end of the repairing plate. The problem of infirm internal fixation can be perfectly solved by exposing a fracture end through subperiosteal separation, inserting a repair plate, placing nails into a fracture block and then applying fixation and locking.

A reduction and fixation device and a method for non-radiologic closed reduction and nailing with a weight bearable nail for femoral fractures. The reduction and fixation device includes a proximal trifurcation device, a distal trifurcation device, a length adjusting nut, and an alignment rod. The proximal trifurcation device is configured to be attached and secured to a proximal fragment of a fractured femur of a patient. The distal trifurcation device is configured to be attached and secured to a distal fragment of the fractured femur of the patient. The proximal trifurcation device, the distal trifurcation device, the length adjusting nut, and the alignment rod are configured to manipulate a proximal fragment and a distal fragment of a fractured femur to restore their alignment and orientation to a pre-fracture state.

A bone reduction and plate fixation forceps including a first arm-having a proximal part including a handle and a bifurcated distal part in which a first bone engaging jaw and second bone engaging jaw are configured to engage a first surface of a fractured bone on each side of the fracture, and a second arm having a proximal part including a handle and a distal part comprising a third bone engaging jaw configured to engage a second surface of the fractured bone to clamp the bone between the first and second arm. At least one of the first bone engaging jaws and second bone engaging jaws has a proximal to distal bridge shape.

A plating system includes a bone plate including an aperture and a longitudinal axis. A locking member is receivable in the aperture to attach the bone plate to a joint. The plating system includes a guide including a body having a first end portion and a second end portion, an attachment portion attached to the bone plate, and a translating portion including a sleeve having a sleeve longitudinal axis. The sleeve receives a drill or a guide wire. The first end portion of the body is connected to the attachment portion, and the translating portion is connected to and translates relative to the second end portion of the body along an axis to move the sleeve. The sleeve defines one of a plurality of trajectories. The axis is substantially perpendicular to the plate longitudinal axis of the bone plate and the sleeve longitudinal axis.

This invention discloses an integrated preoperative planning system and method for locking plates in proximal humeral fractures, comprising: a data preprocessing module for processing CT data; a fracture segmentation and 3D reconstruction module for segmenting and generating fracture fragment models; a target anatomy prediction and fragment disposal module for predicting target anatomical morphology and classifying fracture fragments; a surgical feasibility-constrained virtual reduction module for virtual reduction under anatomical and clinical constraints; a plate fitting and fixation planning module for optimizing plate fit, screw configuration, and generating equivalent fixation parameters; a finite element modeling and solving module for automatic mechanical simulation; and a risk assessment and closed-loop optimization module for assessing risks and triggering replanning to achieve closed-loop optimization. This invention significantly reduces preoperative planning time, improves the mechanical reliability and clinical fit of the plan, and provides a quantitative basis for surgical decisions.

The utility model discloses a hook-shaped fixing steel plate for ulna coracoid process fracture. The device comprises a main plate, a protruding attaching part and a hook part which are integrally arranged and are integrally in a hook shape. The hook part is matched with the upper surface of the ulna coracoid process in shape, and the outer edge of the hook part is in a blade shape; the protuberance fitting part is matched with the anatomical form of the coronal process lateral column, and the main plate is matched with the anatomical form of the lower end part of the coronal process lateral column; a plurality of screw holes are formed in the protruding attaching part and the main plate. The fixing effect on small fracture blocks is optimized, the postoperative effect is guaranteed, and the living quality of a patient is improved.

A net cover integrated fixing anchor comprises an anchor body, a flexible net cover and a connecting belt. The anchor main body comprises a needle point part, a threaded part and a tail part, the needle point part is used for penetrating through bone cortex to assist the anchor main body in being placed, the threaded part and a bone form threaded fixed connection to provide pullout resistance, and the tail part is fixedly connected with the flexible net sleeve; the flexible net sleeve is attached to the surface of a to-be-reset fracture block, and the flexible net sleeve is matched with the anchor main body to press and limit the fracture block at the to-be-reset position. One end of the connecting belt is fixedly arranged on the flexible net cover, the other end of the connecting belt is connected with the tail part of the anchor main body, and the connecting belt can tighten the flexible net cover.

The invention discloses a fracture internal fixation system, and relates to the technical field of medical instruments. The fracture internal fixation system comprises a steel plate which is provided with a contact face used for being attached to a backbone, and the steel plate is provided with a connecting hole and a fixing screw hole; the connecting screw is used for penetrating through the fixing screw hole and is connected with the backbone; the central fixator is cylindrical, the central fixator is used for being arranged in the tuberosity fracture position of a backbone in the axial direction of the central fixator so as to support a tuberosity fracture block, the central fixator is provided with a bone grafting bin and a penetrating channel which are communicated, and the bone grafting bin is cylindrical and extends in the axial direction of the central fixator in a penetrating mode. The extension direction of the through channel and the axial direction of the bone grafting bin form an acute angle; and the fixing nail is used for adaptively penetrating through the connecting hole and the penetrating channel and is connected with the tuberosity fracture block, so that the tuberosity fracture block is reset on the backbone. According to the invention, an effective fixing effect can be applied to a fracture part, bone healing, repair or reconstruction can be promoted, the stability of bones is enhanced, and the rehabilitation time of a patient is shortened.

The orthopedic reduction forceps comprise two single-blade forceps fixed by a fixing bolt, each single-blade forceps is composed of a forceps head, a forceps body and a forceps handle from head to tail, the thickness of the forceps head of each single single-blade forceps is larger than 4 mm, the thickness of a cutting edge of each single single-blade forceps is larger than 1 mm, a clamping opening of each forceps head is provided with a plurality of reduction teeth, and the top end of each forceps head is further provided with tip teeth; according to the invention, the tip teeth can be easily inserted between fracture blocks, tightly attached to the fracture blocks and stably grasp the fracture blocks, the fracture broken ends can be fixed by matching with the reduction teeth, the fracture broken ends can be kept in a good alignment relationship, and meanwhile, some small tubular bones can be clamped; the forceps body is widened and thickened, the forceps body is short and thick, the fracture broken end can be better held, inconvenience caused by narrow operation space is reduced, and the situation that the fracture broken end cannot be stably held due to the fact that bent forceps and tissue forceps are too long and too thin, and effective reduction is difficult occurs.

The invention discloses a rock mass fracture blocking identification calculation method based on a mathematical set theory, and the method is based on the mathematical set theory, and comprises the following steps: collecting rock mass cracks to form a crack set, calculating the number of cracks which are intersected with, intersected with and communicated with a plurality of cracks in a rock mass, and forming an intersected crack set corresponding to each crack; forming a potential block crack set by the cracks which meet the condition that the cracks and other cracks form a closed area in the intersection crack set; taking each crack in the potential block crack set as an initial crack for circulation, searching whether the initial crack is contained in an intersection crack set, and if the intersection crack set contains the initial crack, forming a cracked block; and otherwise, circulating the intersection crack set, and carrying out recursive search on the intersection crack set corresponding to the cracks in the intersection crack set until all fractured blocks and cracks are searched. According to the method, the calculation efficiency is high, the block formed by fracture can be accurately identified, and convenience is provided for calculation of the rock mass fracturing or excavated rock mass cracking damage process.