288 results about "Iliac screw" patented technology

A tamper for making paraffin blocks for histology may include a pliable tamper head and a handle. The handle may be permanently or removably attached to the tamper by using screws, magnets, or the like. The tamper may be made from a pliable material, such as a silicone rubber, with improved thermal transfer and high latent heat. In use, the tamper may be warmed in advance to a working temperature by placing the tamper on a hot plate of the embedding station or on a dedicated smaller hot plate. Alternatively, the tamper may be heated with an electric resistive element, a thermoelectric device, or an electric induction coil.

A sacroiliac (SI) joint implant assembly addresses SI joint dysfunction and degenerative sacroiliitis. The assembly includes a first implant body, a second implant body, and a piezoelectric layer positioned between them. The piezoelectric layer generates electrical charges when subjected to mechanical stress, stimulating bone growth and enhancing stability of the SI joint after surgery. The implant bodies may feature non-planar surfaces to distribute compressive and shear forces unevenly across the piezoelectric layer. The assembly can be secured using fasteners such as screws, pins, or brackets, and may include porous or fenestrated bodies made from materials like titanium or polymers. Some implant assemblies are designed for minimally invasive surgical procedures, with configurations that allow for precise placement using guide wires and imaging techniques. The assembly aims to stabilize the SI joint and promote bone fusion, leveraging the piezoelectric effect to improve the overall efficacy of the fusion procedure.

This invention discloses a spinal endoscopic screw-rod fixation system, belonging to the field of medical device technology. The system includes screws, locking pins, and connecting rods. The screw head has a fixing hole with internal threads on the inner wall and a driving hole at the bottom. The proximal end of the screw forms an arc-shaped mating surface around the fixing hole. The locking pin has external threads matching the internal threads, and a spherical clamping surface is formed on the side of the clamping head facing the connecting block. This invention, through the arc-shaped mating between the screw, locking pin, and connecting block, allows the connecting block to adapt to the screw at multiple angles, facilitating insertion and locking in spinal endoscopy or minimally invasive small-incision environments. The flip-handle mechanism facilitates tightening the locking pin in confined operating spaces and prevents arbitrary disassembly of the locking pin, improving the operational convenience and safety of the fixation system.

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

The application belongs to the field of medical devices, and particularly relates to a humeral shaft middle-distal fracture anterolateral MIPPO bone plate, which comprises a bone plate main body, a plurality of screw holes one are uniformly arranged on the proximal end to the middle end and the distal end of the bone plate main body, a plurality of screw holes two are arranged on the distal end of the bone plate main body, the diameter of the screw hole one is greater than the diameter of the screw hole two, the screw holes of the proximal end and the distal end of the bone plate are respectively provided with screw holes matched with screws of different diameters, the structure of the bone plate is designed on the basis of CT scanning data of humeral bones of a plurality of patients, and the bone plate is designed according to the structure of the reconstructed three-dimensional model of the humeral bone, so that the bone plate is more in line with the anatomical characteristics of the patient, and the bone plate is more suitable for anterolateral MIPPO surgery in cooperation with a matching device, indirect reduction of a fracture can be realized, the operation is further simplified, the operation time is saved, the amount of bleeding is reduced, and the surgical trauma is reduced.

This invention pertains to spinal pedicle screws, specifically locking spinal pedicle screws, including perforated pedicle screws and cortical bone screws that work with them. The proximal end of the self-locking master screw is thickened. A through-hole is provided in the thickened section of the pedicle screw, and the cortical bone screw is driven into the through-hole and fixed to the upper and lower cortical bone layers of the pedicle to form a triangular fixation. After the pedicle screw is implanted, both ends of the through-hole of the pedicle screw are located inside the pedicle. A hole is drilled from the posterolateral aspect of the pedicle using a special aiming device, passing forward and upward through the oblique hole of the pedicle screw, and then through the anterior and superior cortical bone of the pedicle. After measuring the length, a suitable cortical bone screw is selected, screwed in, and locked, fixing the posterolateral cortical bone, the pedicle screw, and the anterior and superior cortical bone of the pedicle. The screw is positioned in a safe area of ​​the superior cortical bone of the pedicle. The cortical bone screw is fixed to the upper and lower cortical bone of the pedicle by passing through the oblique hole, thus locking the position of the pedicle screw.

A modular poly-axial bone screw includes a poly-axial bone screw, a poly-axial tulip head, and a collet disposed within the tulip head, the collet interacting with the bone screw and tulip head providing an interference fit with the bone screw head to lock orientation of the tulip head on and relative to the bone screw. Inner configurations of the tulip head interact with outer configurations of the collet to lock axial and / or rotational position of the collet within and relative to the tulip head, and thus about the bone screw head. The collet also has a base configured to conform to a top of a bone screw, wherein the collet is configured to support the bone screw and the tulip head when a spine rod is fixed in the tulip head.

1. The name of the design product: hexagonal socket screw extractor. 2. The use of the design product: for extracting screw with slipping tooth. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 2.

This application discloses an external positioning and guiding device for pelvic fracture channel screws. This application achieves a first repositioning of the lesion location through a percutaneous positioning guide plate with multiple spaced positioning perforations and multiple first positioning tubes connected to the base body, each equipped with a positioning and guiding component. The first positioning tubes pass through corresponding positioning perforations, abutting against the patient's iliac bone, thus achieving a second repositioning of the lesion location. Multiple first positioning pins pass through corresponding first positioning tubes and connect to the patient's iliac bone, achieving stable connection and limitation of the base body based on dual positioning, preventing base body displacement. Finally, by connecting the positioning guide tubes to the base body and passing the channel screws through the positioning guide tubes, connecting the affected and healthy iliac bones, the channel screws are positioned and oriented.

Provided herein are methods and systems for stabilizing a joint, such as the elbow. The system may include an intramedullary rod configured to be placed in a medullary canal of a bone, a pin, a linking member defining an aperture for receiving the pin, and a connector defining a first aperture and a second aperture, the first aperture configured to receive the linking member. The system may further include a screw extending through the second aperture of the connector and the aperture of the intramedullary rod. The system may be configured to be implanted into a patient.

A medical implant (10) includes: a non-metallic core (26) comprising polyetheretherketone (PEEK); and a non-metallic reinforcing layer (34) coupled to the core. The core is at least partially encapsulated by the reinforcing layer, and the reinforcing layer comprises carbon fiber strands.

A retractor blade assembly having a retractor blade having a track extending long on a face of the retractor blade, a screw entry at a bottom of the retractor blade comprising a window through which a bone screw is insertable, and a screw gate which engages the track on the retractor blade. Once the bone screw is placed through the screw entry, the screw gate lowers until the screw gate blocks the window.

The utility model relates to medical instrument technical field, concretely relates to a lumbar screw device for osteoporosis, including fixed mainboard, still including fixing device, fixing device includes cone screw, pasting board, transverse process screw, stabilizer and hinged component, and the cone screw is with fixed mainboard screw thread cooperation, and pasting board is through hinged component and fixed mainboard swing joint, and stabilizer fixed mounting is on pasting board, and is located pasting board far from fixed mainboard's one side, and transverse process screw screw thread penetrates stabilizer, and through the cone screw and hit into cone, make fixed mainboard fixed on cone, and through the cooperation of transverse process screw and stabilizer, make pasting board fixed on pedicle, realize the auxiliary fixation of fixed mainboard, to this end complete the fixation to fractured lumbar vertebra, because reduced the use of screw, and then in guarantee fixed effect's simultaneously, reduced the destruction to lumbar vertebra.

The utility model relates to medical auxiliary instrument technical field provides a kind of bone injury patient implant screw's taking-out device, including ring main body, internal fixation assembly and external fixation assembly.The internal fixation assembly includes expansion cylinder and expansion column, the expansion cylinder is set along the inner ring side of ring main body Circumferentially, expansion column can pass through the inner ring of ring main body, and expansion cylinder is expanded tightly.One end of expansion column located outside expansion cylinder is equipped with a rotating head.The external fixation assembly includes tightening cylinder and hoop ring, tightening cylinder is circumferentially arranged at the outer edge of ring main body, hoop ring can be sleeved on tightening cylinder, and tightening cylinder can be tightened.The bone injury patient implant screw's taking-out device proposed in the utility model can greatly improve the friction between it and implant screw, in the process of taking out implant screw, it can effectively avoid the problem of skidding, especially suitable for the case that the internal hexagonal groove of implant screw is rounded, and it is difficult to take out.

This invention provides an internal fixation device for cancellous bone, belonging to the field of medical device technology. It includes a fixation plate with a plurality of screw holes and positioning holes arranged in a linear array on its top outer wall; and a guide assembly connected to the fixation plate, used to guide the hollow self-drilling screws. By incorporating the guide assembly, this invention not only guides the hollow self-drilling screws, preventing them from deviating from their pre-operatively assessed position during insertion, thus affecting their fixation effect on the fracture site, but also holds the screws during the guiding process, preventing the screw head from tilting and protruding, which could cause skin irritation and affect postoperative recovery.

The utility model discloses a self -tapping screw with stable structure, including screw body, the countersunk head outside of screw body is equipped with one detachable ring, the ring bottom is equipped with annular slide groove, the annular slide groove inner periphery is evenly distributed with several sliders, each slider is articulated hollow support rod through universal connecting piece, the telescopic rod support foot is telescopically inserted in the hollow support rod with spring, in the non -use state, each hollow support rod opens outwards and telescopic rod support foot touches the ground simultaneously, forms the self -reliance type multi -point support around the screw body axis, makes the screw body keep vertical and waits for the nail attitude. Without using hand to hold the screw, can start to spin in, avoids the risk that hand is scratched by the tool, and the slider slides in the annular slide groove inner periphery, and the universal connecting piece allows the hollow support rod to draw in synchronously with the screw downward, and the telescopic rod support foot is retracted under the action of the compression spring, and the position of support rod is adjusted without manual, realizes the continuous operation of spin in, and the continuous operation of accomodating, and the construction efficiency is improved obviously.

This utility model relates to the field of orthopedic medical device technology, specifically to an adjustable drilled plate integrated fixation clamp for long bone fractures. It includes a first clamp body and a second clamp body, which are cross-hinged. The top of the first clamp body has a first clamping part, and the inner surface of the first clamping part has several short pins. The top of the second clamp body has a second clamping part, which includes a fixing plate and a clamping block. The clamping block is slidably connected to the inner side of the fixing plate, and the fixing plate has several through holes. This utility model not only provides stable clamping but also features fracture reduction and fixation, adaptive clamping of multiple types of plates, and drilled screw implantation.

The application discloses a mechanism for guiding liquid to be uniformly distributed on absorbable material, relates to the medical field, and comprises a fixing seat, a through hole for mounting an infusion tube is formed in the upper surface of the fixing seat, and a clamping assembly for mounting a marking head is arranged on the fixing seat; the clamping assembly comprises a connecting plate fixedly connected to the lower surface of the fixing seat; the fixing plate, the moving plate and the arc-shaped rubber pad are cooperatively arranged; in use, the marking head is placed in the first arc-shaped groove, then the moving plate is attached to the fixing plate, the marking head is partially located in the second arc-shaped groove, the marking head is clamped in the first arc-shaped groove and the second arc-shaped groove through extrusion of the arc-shaped rubber pad, and the moving plate is attached to the fixing plate through the connecting assembly, so that the moving plate is prevented from moving, the abutting force of the locking screw is difficult to control, the marking head is easily blocked or the abutting force is small, the marking head cannot be fixed, multiple adjustments are required, and the working efficiency is reduced.

The utility model discloses an anti-fatigue fixed head, including fixed nail and reinforcing part, the reinforcing part includes the central tube, and the outer periphery of central tube is distributed with a plurality of and along the radial extension reinforcing wing board that links to each other, the fixed nail includes the nail body of inlaying into the central tube, and the one end of nail body has the sharp head, and the other end has the limit and makes the axial movement of the tail of bundle, the middle part of nail body has the elastic part in series, the nail body is in and is set up with the combination hole, and the combination hole includes the light hole and the threaded hole that extend along the axial direction, and the diameter of threaded hole is greater than the diameter of light hole, and the light hole extends to the elastic part, and the light hole is stuffed with the soft glue column, and the threaded hole is screwed and is connected with the jam screw of the end part and the soft glue column of resistance. This fixed head has the characteristics of anti-fatigue, and the service life is long, and the overall function is perfect, and the practicality is strong.

The invention relates to an implant for connecting adjacent vertebrae, comprising a front side, a back side opposite the front side in the thickness direction of the implant, at least two through-openings extending longitudinally between the front side and the back side and designed to receive a fastening screw, and at least one bending section that is plastically deformable under the influence of a bending tool on the implant in order to intraoperatively adapt a longitudinal curvature of the implant extending along a longitudinal axis of the implant, wherein the bending section has at least one tool receiving groove that is recessed in the thickness direction into the front side or the back side and extends longitudinally along a transverse axis of the implant, and wherein the at least one tool receiving groove is designed to receive an working section of the bending tool.

A method for manufacturing at least one bone anchor and a corresponding drilling template, wherein the bone anchor has an anchor plate which is to be fixed to the surface of a bone by means of one or several screws having a screw head. The anchor plate thus has a bone side which is to connect to the surface of the bone and a free side which is opposite to said bone side. Further, a method for manufacturing a drilling template is described, making it possible to make bore holes in the bone at predetermined positions and to screw the bone anchor to the bone according to predetermined orientations.

Systems for treating bone fractures are disclosed. Exemplary systems may include a backpack and one or more bone plates for engaging bone members. The backpack may be configured to be temporarily attached to the bone plate in order to provide trajectories for fasteners received by the bone plate. The bone plates can receive one or more screws to secure the bone plates to an underlying bone member. The one or more screws can be inserted into bone plate holes that can be considered locking or non-locking. The bone plates described herein can have particular combinations of locking and / or non-locking holes. Additional bone plate holes can be used to accept sutures, K-wire, or other instrumentation.

The present invention relates to a method, such as a surgical method for assisting a surgeon for placing screws in the spine using a robot attached to a passive structure. The present invention also related to a method, such as a surgical method for assisting a surgeon for removing volumes in the body of a patient using a robot attached to a passive structure and to a device to carry out said methods. The present invention further concerns a device suitable to carry out the methods according to the present invention.

This application provides a support arm and a medical device. The support arm includes an arm body, a locking pin, and an anti-disengagement ring. The arm body has a connector with a locking groove and a sliding groove. The locking pin is inserted into the locking groove. The anti-disengagement ring has a mating structure. The sliding groove includes at least one first groove segment and at least one second groove segment arranged at an angle, one of which is a locking groove segment. When the mating structure moves within a groove segment other than the locking groove segment, the anti-disengagement ring blocks at least a portion of the locking groove. When the mating structure is located in the locking groove segment, the locking groove is exposed, allowing the locking pin to be inserted into or removed from the locking groove. The support arm provided by this application does not require screws or other fasteners, has a simple assembly method, and avoids the phenomenon of missing fasteners. It has high assembly stability and a high aesthetic appearance. It also reduces the inconvenience of fastener disinfection during disinfection and wiping.

A bottom loading fastening system that consists of the polyaxial ball and socket joint used in conjunction with an anchoring bone screw. The system allows attachment of a connector assembly having an offset angular shape for anchoring a connecting rod. The spherical ball connector using a locking ring positioned in a locking ring slot. Upon installation, the locking ring is moved to a ring containment slot to expand a retainer ring, allowing passage of a bone screw spherical ball, the retainer ring forcing the locking ring back to the locking ring slot, thereby permanently attaching the connector assembly to the anchoring bone screw. The offset between the upper and lower sections allows the rod to be received at an angle optimized for spinal alignment, thereby reducing the need for rod contouring and minimizing stress concentration on the spherical joint.