45 results about "Femur fracture" patented technology

The invention concerns an intramedullary nail for the fixation of fractures of the proximal femur, with a femur neck screw (10a), installable with a proximal femur nail (1a), into the intramedullary area, by a diagonal bore (7a), running to the longitudinal axis of the femur nail (1a), from the side of the femur nail (1a), and a locking element (16a) with at least one prong (18a) parallel to the axis of the femur neck screw (10a). A positive connection between the locking element (16a) and a groove (8a) in the bore (7a) of the femur nail (1a) forms a twisting lock of the femur neck screw (10a) and, allows for the axial movement of the femur neck screw (10a) in the bore (7a) of the femur nail (1a).

An intramedullary nail for the fixation of fractures of the proximal femur, with a femur neck screw (10a), installable with a proximal femur nail (1a), into the intramedullary area, by a diagonal bore (7a), running to the longitudinal axis of the femur nail (1a), from the side of the femur nail (1a), and a locking element (16a) with at least one prong (18a) parallel to the axis of the femur neck screw (10a). A positive connection between the locking element (16a) and a groove (8a) in the bore (7a) of the femur nail (1a) forms a twisting lock of the femur neck screw (10a) and, allows for the axial movement of the femur neck screw (10a) in the bore (7a) of the femur nail (1a).

Intramedullary nails (1) are used to treat femur fractures. It has a distal end (2) determined for insertion into the medullary canal, a proximal end (3) and a longitudinal axis (4). A first hole (5) near the proximal end (3) and transversely intersecting the longitudinal axis (4) is used to accommodate a femoral head screw (10), wherein the center line (6) of the first hole (5) is in line with the The longitudinal axes intersect at an angle of 110° to 150°. A second hole (7) located between the first hole (5) and the proximal end (3) and transverse to the longitudinal axis (4) receives a hip pin (20). The second hole (7) is at least partially formed as a long hole, which has a width B and a length L>B, wherein the length of the long hole is distributed along the direction of the longitudinal axis (4).

The invention discloses a customized far-end dissect type bone plate design method based on patient femur parameters; the method comprises the following steps: leading in a patient fracture model, and measuring effective femur model parameters; using the effective femur parameters to build up a patient femur curved surface characteristic model, projecting a main fracture line to the femur model, restoring main fracture traces, and building up a femur fracture reset curved surface model; drafting a customized contour sketch on a femur sagittal surface, projecting the contour to the femur reset model, obtaining a local curved surface to form a femur binding surface, parameterizing the binding surface contour, and building up mapping between the femur parameters and the binding surface parameters; extending the binding surface outwards at unequal pitchs in a sagittal surface direction so as to build up a bone plate entity, defining entity characteristics, building up mapping between the binding surface and entity characteristic parameters, and forming bone plate characteristics; leading out the characteristics so as to generate a customized bone plate. The customized far-end dissect type bone plate design method uses patient femur parameters to directly and accurately build up the customized dissect type bone plate, can fast generate a same kind bone plate according to parametric modification, thus providing important meanings for customized design of the patient bone plate in a bone surgery.

An adjustable suspending tractor for treating the femur fracture of child is composed of base plate unit which consisting of bed plate, regulating axle holder, elastic band and bedpan chamber, the supporting frame unit installed to base plate unit by vertical posts, the leg supporter unit borne by said supporting frame unit in rotable mode, and the regulator unit arranged between leg supporter unit and supporting plate. The height and tracting force can be adjusted.

The invention is a method for preparing an artificial femur specimen by using polymethyl methacrylate (PMMA), which is characterized in that the method carries out continuous spiral CT scan on normal femur by taking along the cross section of the femur, and obtained multilayer images are manufactured into a three-dimensional reconstruction model of the femur; and then a femur model is manufactured, unbleached wax is utilized to manufacture a pulp cavity, and PMMA is poured into the model to be cured; finally, the unbleached wax is melted to obtain the hollow femur specimen. In the invention, PMMA is utilized to manufacture the femur model, the cost is low, the operation is simple, the performance is good, and the model can be easily stored, thus avoiding the worries about inadequate bone source and high cost. In addition, experiments which can not be carried out on the body of a patient can be carried out in vitro, such as the selection of different internal fixtures of identical type fracture and the analysis on stress applied on different type fractures of the same internal fixture, thus the method finds out solutions and provides helps for the selection of internal fixation of clinical femur fracture.

The invention provides a constructing method and application for an osteoportic fracture disease animal model. According to the provided technical scheme, based on a constructed osteoporosis animal model, thighbone small lateral incision fracture molding of a model animal is conducted, then a femur fractured end bilateral inverse intramedullary nail inserting internal fixation is conducted, and the osteoportic fracture disease animal model is constructed. The method avoids influences of uncontrollable factors on an experimental result, ensures the uniformity of modeling, shortens the molding time, and accelerates the experiment process. The method is applied to the preparation of the osteoportic fracture disease animal model and is beneficial for meeting related requirements of the osteoportic fracture disease animal model, and the osteoportic fracture disease animal model is taken as a study object to study the pathogenesis, prevention and treatment of basic and clinical osteoportic fractures.

This invention relates to a coupling for an orthopaedic device. Also disclosed in an orthopaedic device comprising a coupling of the invention and method for the use of the orthopaedic device. The orthopaedic device finds utility as a bolt apparatus for fixation of bones such as fractures of the femur, although it may be used in any suitable bone.

An anti-rotation self-locking fracture internal fixer consists of a screw stem, a sleeve and a bolt, wherein the front section of the screw stem is provided with a spiral blade, while the end head of the rear section is provided with a connecting structure connected with one end of the bolt; the outside diameter of at least the nesting-in part near the end head of the rear section of the screw stem is less than the inside diameter of the front end of the sleeve contacting the screw stem; the bolt is nested inside the sleeve to connect the screw stem and the sleeve together; the external surface of the bolt is provided with external thread, while corresponding part of the internal surface of the sleeve is provided with internal thread; the external surface of the end head of the sleeve far away from the far end of the screw stem is provided with sheetlike wings; in addition, the rear section of the screw stem and the sleeve are provided with a rotary limit structure. During use, the fixer is arranged in 'locking' status after the bolt is screwed up; moreover, the wings arranged on the sleeve have anti-rotation function, thereby preventing loosening of the fixer. The fixer has a simple operation, short surgery time, reduction loss of bone quantity and being beneficial to healing of fracture, thereby being particularly suitable for therapy of neck of femur fracture patient with bone loss.

The invention relates to a memory alloy femur fracture setting plate which is a double-beam fracture setting plate. Rectangular holes are uniformly arranged in the surface of the double-beam fracturesetting plate along the length direction, surrounding arms in pairs are distributed on two sides of the double-beam fracture setting plate, and each pair of the surrounding arms form an open-ring-shaped structure which extends along one end of the length of the double-beam fracture setting plate to form a bent pressurizing hook. The fracture setting plate and the pressurizing hooks are integrallyformed, and a main structure of the fracture setting plate is formed by adopting double beams, so that surrounding force and bending resistance of the fracture setting plate can be improved effectively. The memory alloy femur fracture setting plate is reasonable in structure, safe, effective, simple and convenient to operate and convenient for femur fracture inside fixing and prosthesis second-time fracture restoration after total hip replacement.

The invention discloses an animal femoral surgery positioning and fixing device. The animal femoral surgery positioning and fixing device comprises a femoral positioning and fixing table, wherein thefemoral positioning and fixing table is provided with bone holding forceps for clamping an animal femoral shaft, a femoral positioning and fixing panel for fixing the neck of the bone holding forceps,and a fixing bin for fixing a handle of the bone holding forceps; and the femoral positioning and fixing table is used for limiting and fixing the surgical standard position of an animal femur in a femoral surgery, so that a surgical operation platform for a three-dimensional standard image of the femoral surgery is formed. By the animal femoral surgery positioning and fixing device, standardization of a femoral external fixation surgery for implementing experimental models such as femoral fracture, segmental bone defect and distraction osteogenesis can be guaranteed, so that a femoral modelsurgery technology has repeatability and data reliability. The animal femoral surgery positioning and fixing device is assisted by a three-dimensional digital fixing frame as an external fixing frame,and is linked with a synchronous laser marking navigation unit, so that a required large-environment suitable body position for the surgery is provided for a surgical operator, accurate positioning is realized, and meanwhile, a required basic environment is provided for a surgical robot operating system.

The cephalomedullary nailing system of this invention contributes to solving three main problems: reduce fractures, improve assembly biomechanics to ensure the load axis is favorable as possible for bony fragments and prevent femoral neck collapse as well as offset and limb length loss, hence avoiding the possibility of reduced abductor power. The system is based on specific screw channel geometry and the placement of an additional locking screw, allowing the nail to turn 360° and facilitating nail insertion through the screw.

The invention discloses an intraoperative resetting device of elastic nails used for femoral fractures in children, and relates to the field of resetting devices. The resetting device includes a base plate; a thigh supporting plate is fixedly installed on the top of the base plate and includes a fixed supporting plate and a movable adjusting plate; the movable adjusting plate is slidingly connected to the top of the fixed supporting plate; the end of the movable adjusting plate is in movably hinged joint with a calf supporting plate; a bending angle adjusting member is fixedly installed at the bottom of the base plate; a height adjusting member is arranged at the bottom of the calf supporting plate; the bending angle adjusting member includes a first threaded rod and a connecting rod; a threaded base and a guiding base are fixedly installed at the bottom of the base plate; the threaded base is in front of the guiding base; and one end of the first threaded rod is rotatably connected to a movable rod. Through the arrangement of the bending angle adjusting member, the height adjusting member and a length adjusting member, the lifting angle of the femur and the lifting height of the calf of a patient can be adjusted; and the resetting device can be suitable for the patients with different femoral lengths and convenient and flexible in usage.

The invention discloses a medicine for treating fracture of the femoral shaft and a preparation method thereof. The medicine comprises the following raw medicinal materials: Chinese angelica, adhatoda ventricosa, root of common peony, asiatic toddalia root, dried rehamnnia root, rubia yunnanensis, rhizoma drynariae, circium japonicum, native copper, olibanum, cortex lycii radicis, myrrh, elderberry, hematoxylon, asplenium varians wall., caulis spatholobi, radix astragali preparata, madder, eucommia ulmoides, rhizoma sparganii, the seed of Chinese dodder, ixora chinensis, cutch, lamiophlomis rotata, giant knot weed, pig marrow, fir club moss and sea-buckthorn. The medicine for treating the fracture of the femoral shaft has the beneficial effects that the medicine has the effects of invigorating blood and generating new blood, setting broken bones and connecting tendons, promoting circulation and removing stasis, and replenishing essence and generating marrow; the medicine is mainly used for treating the femoral fracture in the middle period after the operation; the medicine has the advantages of rapid effect, high efficiency, accurate curative effect, short course of treatment, zero toxic side effect, low cost, and the like.

Current art lacks a plating system that allows for fixed angle plate and fastener placement that also provides adequate space for concurrent intramedullary nail placement and optionality of fastening the plate to the intramedullary nail with a fixed-angle construct for distal femur fracture fixation. The subject invention, which is a unique plating system for repairing distal femur fractures is described. The system includes a unique plate and a multitude of fasteners that are uniquely contoured to fit the distal femur and provide a fixed angle fixation system. The subject system has the optionality of application to the medial and / or lateral sides of the distal femur bone. Additionally, this plating system allows placement of a multitude of fasteners into the distal femur that can avoid violation of the femoral intramedullary canal. As a result, this system allows concurrent independent intramedullary rod fixation as well as optionality of fixed angle fastener placement through the plating system into an intramedullary rod for augmentation of fixation with a linked, fixed-angle plate-nail fixation construct.

The invention discloses a thighbone screw placement module and a manufacturing method thereof, and the thighbone screw placement module comprises: a plate-shaped main body which is closely attached to the outer side surface of the thighbone of a patient; a first column, wherein the first column body is of a cylindrical structure, and one end of the first column body is connected with the side, away from the femur, of the plate-shaped body; a second column, wherein the second column body is of a cylindrical structure, and one end of the second column body is connected with the side, away from the femur, of the plate-shaped body; and a third column, wherein the third column body is of a cylindrical structure, and one end of the third column body is connected with the side, away from the femur, of the plate-shaped body. The plate-shaped body, the first column, the second column and the third column are of an integrated structure. Through the application of the thighbone screw placement module, the femoral fracture of a patient can be quickly and accurately fixed, and the femoral head, the greater trochanter and the femoral neck of the patient can be stably connected after the corresponding bolts are mounted in the corresponding mounting holes; and the thighbone screw placement moduleis simple in structure, convenient to use and easy for 3D printing production.

The invention discloses a simple multipurpose rat femur outside fixing support which comprises a plastic outside fixing support clamping plate, mounting screws and Kirschner wires. Mounting positioning holes are formed in the lateral side of the plastic outside fixing support clamping plate, the Kirschner wires are mounted in the mounting positioning holes, screw mounting holes are formed above the plastic outer fixing support clamping plate, each mounting screw is mounted inside the corresponding screw mounting hole, and each Kirschner wire is a threaded Kirschner wire of 1.2mm in diameter. The invention relates to the technical field of animal experiments and damage repair. Cost of the outside fixing support is saved while weight of the same is reduced, and the outside fixing support issimple in operation, economical, practical and firm in fixing; due to grooves designed in the clamping plate, needs of various models for bone defect, bone fracture and bone ununion can be met, and fixing needs of rat femur fracture, ununion and defect experiments are met, so that the outside fixing support has the advantages of being simple, light, economical, practical and multipurpose.

The invention provides a femur fracture strutting reducing device, and belongs to a medical apparatus. The femur fracture strutting reducing device comprises a first extension rod and a second extension rod, the two ends of the first extension rod and the second extension rod are connected together through a first pipe clamp and a second pipe clamp respectively, a first extender and a second extender are arranged in the middles of the first extension rod and the second extension rod respectively, a Steinmann pin sleeve is fixed to one end of the first extension rod through a third pipe clamp, a Steinmann pin is arranged in the Steinmann pin sleeve, a semi-ring rod is fixed to one end of the second extension rod through a fourth pipe clamp, a first Kirschner pin is fixed to the semi-ring rod through a first tubular pin clamp and a second tubular pin clamp, and a second Kirschner pin perpendicular to the first Kirschner pin is fixed to the semi-ring rod through a third tubular pin clamp. By means of the femur fracture strutting reducing device, when closed reduction is carried out, the femur fracture strutting reducing device can be combined with a magnetic force navigation intramedullary needle to treat the femoral shaft fracture, the closed reduction aim is achieved, the operation flexibility during an operation is greatly improved, and complications caused by applying a traction table to carry out reduction are avoided.

The invention relates to the field of medical apparatus, in particular to a fixation device for medial wall of femoral intertrochanteric fracture. The technical scheme is characterized in that the fixation device for medial wall of the femoral intertrochanteric fracture includes a steel plate mounted on a medial wall of a femur, the surface of the steel plate is an arc surface fitted with the medial wall of the femur, and the steel plate comprises a steel plate body used for fixing the steel plate and a head supporting structure for supporting the medial wall of the femur; the steel plate body and the head supporting structure are fixed, the steel plate body and the femur are fixed by screw nails, the head supporting structure and the femur fracture bone block are fixed by the screw nails, and the screw nails of the steel plate body cut through the femur or rip into the femur. The fixation device for the medial wall of the femoral intertrochanteric fracture ensures the accurate position of the fracture, and solves the problem of shortening or hip varus when the femur heals.

The invention provides a femoral intramedullary nail device, a use method and the application thereof.The femoral intramedullary nail device comprises a main nail and a lag screw, a through obliquely-inserted locking hole is formed in the surface of the main nail, the lag screw comprises an inner core rod and a sleeve rod which are arranged in a nested mode, the sleeve rod is divided into a deformation section and a fixing section, the main nail is implanted into a femoral medullary cavity. the lag screw penetrates through the oblique insertion locking hole, the deformation section is screwed into a separated fracture block, the fixing section is fixed in the main nail, the fixing section is of a tubular structure, the deformation section comprises at least two bendable ridge plates, the bendable ridge plates surround the inner core rod, grooves are formed in the middles of the bendable ridge plates. The device is rotated to extrude the deformation section, and the bendable edge plates are bent towards the periphery from the grooves. The femoral nail has small influence on the fracture end of the femur, enhances the elasticity of the main nail, conforms to the anterior arch angle characteristics of the femur, and can reduce the stimulation to the medullary cavity.

The invention discloses application of recombinant human basic fibroblast growth factor-5 (rhbFGF5) in preparation of drugs for promoting fracture healing. A collagen sponge containing the rhbFGF5 isfixed in an open mice femur fracture broken end. A result shows that the rhbFGF5 remarkably promotes the generation of osteoblast, bone trabecular and callus of the fracture broken end, shortens fracture healing course and reduces fracture complications. In vitro level experiment results show that the rhbFGF5 can remarkably increase mRNA expression levels of fracture healing marker molecules suchas alkaline phosphatase (ALP), collagen I (COL1) and bone morphogenetic protein-2 (BMP2), promote proliferation, migration and differentiation of mesenchymal stem cell in bone marrow, and promote proliferation of mature osteoblast. The application of the rhbFGF5 provided by the invention provides a powerful theoretical basis for the fact that rhbFGF5 can be used for preparing drugs for treating fracture and provides a more effective treatment manner for promoting fracture healing in clinic. The rhbFGF5 has characteristics of being safe and effective and being easy to operate, and significancefor fracture healing in clinic.

The invention is a method for preparing an artificial femur specimen by using polymethyl methacrylate (PMMA), which is characterized in that the method carries out continuous spiral CT scan on normal femur by taking along the cross section of the femur, and obtained multilayer images are manufactured into a three-dimensional reconstruction model of the femur; and then a femur model is manufactured, unbleached wax is utilized to manufacture a pulp cavity, and PMMA is poured into the model to be cured; finally, the unbleached wax is melted to obtain the hollow femur specimen. In the invention, PMMA is utilized to manufacture the femur model, the cost is low, the operation is simple, the performance is good, and the model can be easily stored, thus avoiding the worries about inadequate bone source and high cost. In addition, experiments which can not be carried out on the body of a patient can be carried out in vitro, such as the selection of different internal fixtures of identical typefracture and the analysis on stress applied on different type fractures of the same internal fixture, thus the method finds out solutions and provides helps for the selection of internal fixation of clinical femur fracture.

The invention discloses a femoral trochanter reduction device, which comprises a first pincer body and a second pincer body, a mounting groove is formed in the first pincer body, the second pincer body penetrates through the mounting groove and is rotationally connected with the first pincer body through a rotating shaft, and a pincer body adjusting mechanism for femoral trochanter reduction adjustment is mounted on one side of the first pincer body. According to the invention, the femoral fracture of a patient can be clamped through the cooperation of the first pincer body and the second pincer body, and meanwhile, an adjusting rod in the pincer body adjusting mechanism is finely adjusted to adjust the angle of the first pincer body and the angle of the second pincer body, so that the femoral fracture is reduced; the adjusting rod can be adjusted at any angle in the mounting port, so that the adjusting rod is always in a state closest to and perpendicular to the bone contact surface,jacking is more stable, and is convenient for operation.

The invention discloses an intramedullary resetting device for thighbone. The intramedullary resetting device comprises an intramedullary resetter and an ultrasonic probe, wherein the intramedullary resetter comprises a distal end and a proximal end, the distal end of the intramedullary resetter goes deep into a medullary cavity of the thighbone, and the ultrasonic probe is arranged at the distalend of the intramedullary resetter and is used for imaging a fracture end of the thighbone. According to the intramedullary resetting device for the thighbone, provided by the embodiments of the invention, real-time monitoring on a thighbone surgery can be achieved through arranging the ultrasonic probe at the distal end of the resetter and employing a mode of performing intramedullary imaging onthe thighbone by the ultrasonic probe. Simultaneously, compared with a mode of imaging employing a C-arm machine, the intramedullary resetting device for the thighbone, provided by the embodiments ofthe invention, has the advantages that the timeliness is higher, and harm caused by irradiation is avoided. In addition, due to interference to images caused by various tissue in the bone, optical imaging of the C-arm machine is not prone to penetration, and ultrasonic signals can penetrate, so that the intramedullary resetting device for the thighbone is higher in identity.

The invention relates to a reset position detection method with patient safety protection, which solves the technical problem of how to prevent the collision between the proximal end and the distal end of the fracture to ensure the safety of the patient, and is applied in the process of femoral fracture reduction performed by an orthopedic surgical robot , the reset system fixes the distal end of the femur, and plans the reset path according to the mirror image of the unaffected side. During the simulated reset process, the above algorithm performs collision judgment to avoid the risk of collision.

The invention discloses a combined medullary needle for femoral fracture fixation. The combined medullary needle for femoral fracture fixation is characterized by comprising two medullary needle bodies which can penetrate into the femoral marrow along two ends of the femur and are detachably and fixedly connected to the interior of the femoral marrow in the axial direction. In a using process, only the near end of the medullary needle needs to be fixed through a lock pin, and the far end of the medullary needle does not need to be fixed through a lock pin, so that the usage amount of the lockpins is reduced, the damage to the bone due to the installation of the medullary needle is reduced, and the influence of the lock pins on an area near a fracture section is avoided. The combined medullary needle can be used in a combined mode and can also be used independently, thereby being high in universality.

The invention discloses a customized far-end dissect type bone plate design method based on patient femur parameters; the method comprises the following steps: leading in a patient fracture model, and measuring effective femur model parameters; using the effective femur parameters to build up a patient femur curved surface characteristic model, projecting a main fracture line to the femur model, restoring main fracture traces, and building up a femur fracture reset curved surface model; drafting a customized contour sketch on a femur sagittal surface, projecting the contour to the femur reset model, obtaining a local curved surface to form a femur binding surface, parameterizing the binding surface contour, and building up mapping between the femur parameters and the binding surface parameters; extending the binding surface outwards at unequal pitchs in a sagittal surface direction so as to build up a bone plate entity, defining entity characteristics, building up mapping between the binding surface and entity characteristic parameters, and forming bone plate characteristics; leading out the characteristics so as to generate a customized bone plate. The customized far-end dissect type bone plate design method uses patient femur parameters to directly and accurately build up the customized dissect type bone plate, can fast generate a same kind bone plate according to parametric modification, thus providing important meanings for customized design of the patient bone plate in a bone surgery.

The invention belongs to the field of medical instruments, and discloses a reduction support assembly for treating femoral fracture. The reduction support assembly comprises: an intramedullary cavitysupport assembly, an internal femoral neck support assembly, and an external femoral neck support assembly, wherein the intramedullary cavity support assembly extends along a first direction and includes a proximal end portion of a first support assembly insertable into femoral tuberosity and a distal end portion of the first support assembly insertable into femoral shaft; the internal femoral neck support assembly extends along a second direction and includes a proximal end portion of a second support assembly insertable into the femoral neck and a distal end portion of the second support assembly insertable into the femoral tuberosity; and the external femoral neck support assembly extends along the second direction and includes a distal end portion of the external support assembly and aproximal end portion of the external support assembly; wherein the distal end portion of the second support assembly is inserted on the proximal end portion of the first support assembly, the distalend portion of the external support assembly is used to penetrate peripheral wall of the femoral shaft to be inserted into the intramedullary cavity support assembly, and the proximal end portion of the external support assembly is used to support a bottom outer wall of the femoral neck. The reduction support assembly can stably maintain a reduction state of a fracture site of femur so as to better promote healing of the fracture site.