27 results about "Bony pelvis" patented technology

An acetabular cub system is configured to be secured to a pelvis and may include an acetabular cup and a plurality of bone fasteners. The acetabular cup may include a bone engaging surface and an articulating surface, as well as a plurality of lobed fastener apertures extending from a first opening at the articulating surface to a second opening at the bone engaging surface. The plurality of bone fasteners may be insertable through the lobed fastener apertures to secure the acetabular cup to the pelvis. Each of the plurality of lobed fastener apertures may include a central aperture configured to receive a first bone fastener of the plurality of bone fasteners and one or more aperture lobes intersecting with the central aperture configured to receive a second bone fastener of the plurality of bone fasteners. The central aperture may be larger than the one or more aperture lobes.

An acetabular bone defect filling block design method based on a force conduction path comprises the steps that a mechanical conduction target path is determined, specifically, the stress condition of a hip joint in a gait cycle is simulated on the basis of a three-dimensional model of a pelvis of a patient, a bone defect area Vdefect and a three-dimensional model of an implanted supporting bracket which are obtained in advance, and the mechanical conduction target path is determined; determining an expected force flow conduction path from the acetabular cup loading area to the host bone main bearing area; a filling space determining step: calculating a residual defect space Vremain formed after the support is implanted; a filling block main body generation step: taking the residual defect space Vremain as a design boundary, taking following of the expected force flow conduction path and realization of matching of the structural rigidity and the host bone as an optimization target, generating a filling block main body three-dimensional model with an internal support truss through a topological optimization algorithm, and steering a strong gluteus column by depending on an incomplete acetabular ring, and a fixed foundation which cannot be shaken is provided. An intelligent structure with the optimal mechanical property is generated by converting empirical shape matching into simulation driving generation type design.

The invention provides an orthopaedic implantation post-operation X-ray film simulation method and system based on a preoperative CT image, a medium, a program product and a terminal, and aims to accurately convert and present results of three-dimensional segmentation, key point identification and prosthesis positioning based on preoperative CT into a standard post-operation X-ray film simulation effect conforming to clinical routine. A doctor can intuitively and clearly foresee the form projection and the specific spatial position of selected prostheses including an acetabular cup, a lining, a ball head, a femoral stem and the like on a post-operation standard orthotopic X-ray film and the accurate relative anatomical relation between the prostheses and key bony markers of the pelvis and the femur in the pre-operation planning stage. By providing an intuitive and quantitative post-operation X-ray film simulation effect, a doctor is effectively assisted in selecting an optimal operation scheme and adjusting setting of parameters such as the size, the position and the angle of an implant, the predictability and the accuracy of operation planning are improved, and dependence on pure experience is reduced.

Methods include tracking one or more of a leg length or an offset in a patient during a total hip arthroplasty (THA) procedure performed using a navigated surgical system, with an expandable trial femoral assembly. Certain methods include registering a pelvis of the patient to the navigated surgical system; and in various embodiments measuring a leg length or registering a femur to the navigated surgical system. An expandable trial femoral assembly is affixed to a prepared and broached femur of the patient; and the expandable trial femoral assembly is reduced into an acetabular prosthesis. A navigated driver may then be used to adjust an expansion extent of the expandable trial femoral assembly. The navigated surgical system may measure the leg length and the offset in the patient based on the movement of a reference element of the femur relative to a reference element of the pelvis.

The invention discloses a method and a device for calculating an acetabular cup bone fitting rate, computer equipment and a storage medium. The method for calculating the acetabular cup bone fitting rate comprises the following steps: acquiring a pelvis model and an acetabular cup model; extracting an effective bone binding surface of the acetabular cup model; performing Boolean operation on the effective bone binding surface and the pelvis model to obtain an intersection set and a difference set of the effective bone binding surface relative to the pelvis model; and based on the intersection and the difference set, calculating to obtain the bone fitting rate of the effective bone fitting surface relative to the pelvis model. According to the method for calculating the joint rate of the acetabular cup bone, an objective, accurate and efficient method is provided for evaluation of the joint rate of the acetabular cup bone through geometric model reconstruction, effective bone joint surface extraction, Boolean operation and quantitative calculation, quantitative calculation of the joint rate of the acetabular cup bone is achieved, and the joint rate of the acetabular cup bone is evaluated. The problems that in a traditional method, doctor experience is relied on, and subjective judgment accuracy is insufficient are solved, and scientificity and accuracy of operation planning are remarkably improved.

The application relates to a hip joint prosthesis, which comprises an interposition acetabulum prosthesis and a femoral head reconstruction device. The interposition acetabulum prosthesis is connected with the acetabular fossa of the pelvis stably through an interposition acetabulum cup, a fixing screw and an interposition acetabulum liner, and the adaptability and stability are enhanced through multiple designs such as petal opening and damping parts; the femoral head reconstruction device comprises a joint friction surface prosthesis and a bone ingrowth support cage, and the reconstruction and stable support of the femoral head are realized. The application achieves the technical effects of improving the stability and durability of the hip joint prosthesis, reducing the postoperative discomfort of patients and promoting the growth of bone tissue.

The application belongs to the field of simulation, and provides a filling modified screw mechanical analysis method based on a finite element analysis model, which comprises the following steps: obtaining three-dimensional medical image data of a target bone tissue region, and constructing a finite element analysis model of a micro bone trabecula structure and a macro pelvis structure based on the three-dimensional medical image data; introducing a filling modified screw structure into the finite element analysis model; constructing a response control factor field for representing the local adaptation capability of each position in the filling structure, and automatically updating the distribution of the factor field according to the stress state change; iteratively optimizing the distribution of the factor field based on a global error minimization principle, so that the overall stress distribution of the filling modified screw in the bone tissue tends to a target state; and outputting the stress response distribution, strain distribution and mechanical adaptation region of the filling modified screw in the bone tissue, which are used for evaluating the fixing performance of the filling modified screw under the condition of osteoporosis.

The invention provides an acetabular cup structure which comprises an outer cup provided with a mounting cavity and connected with a pelvis; the inner cup is movably arranged in the mounting cavity, and the inner cup is provided with a containing cavity for containing the femoral head; the connecting assembly comprises a first positioning piece and a second positioning piece, the first positioning piece is arranged on the inner side of the outer cup, the second positioning piece is arranged on the outer side of the inner cup, and when the first positioning piece is in positioning fit with the second positioning piece, the position of the inner cup is kept unchanged relative to the outer cup. According to the technical scheme, the problem that an acetabular cup is difficult to install in the prior art can be effectively solved.

A pelvis fracture reduction device, comprising a proximal end reduction mechanism, a distal end reduction mechanism and a connecting rod; the proximal end reduction mechanism comprises a first frame, a first positioning assembly mounted on the first frame for fixing the proximal end bone of the affected side; the distal end reduction mechanism comprises a second frame, an adjusting frame hinged with the second frame, a second positioning assembly mounted on the second frame for fixing the distal end bone of the affected side, a third positioning assembly arranged on the adjusting frame for fixing the distal end bone of the affected side; the first frame and the second frame are connected through the connecting rod. After the pelvis fracture and displacement occur, the distal end bone of the affected side and the proximal end bone of the affected side are reduced and closed through the external reduction device. The reduction precision is high, the recovery speed of the patient is fast, and the bone recovery effect is better. At the same time, the large range of scars left by incision of the fracture site is avoided.

The invention relates to a protection device for deep orthopedic surgery. The protection device comprises a fairlead bone crow plate and a fairlead opening crow plate. The fairlead crow plate adopts the front design and the curved side design of a sheet structure with a heart-shaped outline, and is matched with the soft tissue protection baffle and the fairlead sliding groove, so that blood vessels, nerves and visceral organs can be effectively protected, and the risks of bleeding and misoperation in an operation are reduced. The opening crow plate adopts a T-shaped structure front design and an S-shaped sheet structure side design, a safe operation area is formed, cables can pass through the opening crow plate conveniently, and soft tissue embedding and cable winding are avoided. The fairlead bone crow plate and the fairlead distraction crow plate are used in cooperation, the safety and efficiency of the operation can be remarkably improved, the operation risk and the probability of occurrence of complications are reduced, and the fairlead bone crow plate is particularly suitable for deep orthopedic operations in complex anatomical environments such as pelvis, acetabulum and femur.

An acetabular cub system is configured to be secured to a pelvis and may include an acetabular cup and a plurality of bone fasteners. The acetabular cup may include a bone engaging surface and an articulating surface, as well as a plurality of lobed fastener apertures extending from a first opening at the articulating surface to a second opening at the bone engaging surface. The plurality of bone fasteners may be insertable through the lobed fastener apertures to secure the acetabular cup to the pelvis. Each of the plurality of lobed fastener apertures may include a central aperture configured to receive a first bone fastener of the plurality of bone fasteners and one or more aperture lobes intersecting with the central aperture configured to receive a second bone fastener of the plurality of bone fasteners. The central aperture may be larger than the one or more aperture lobes.

The utility model discloses a bone screw for pelvis, and particularly relates to the technical field of bone screws, the bone screw comprises a first screw, a first plug-in groove is arranged in the first screw, a second screw is in threaded connection with the interior of the first plug-in groove, the first screw comprises a first base material layer, a first anti-corrosion layer is arranged outside the first base material layer, and a second anti-corrosion layer is arranged outside the second base material layer. The first screw comprises a first base material layer, the second screw comprises a second base material layer, a second anti-corrosion layer is arranged outside the second base material layer, and the first anti-corrosion layer and the second anti-corrosion layer are anti-corrosion layers formed by coating bioactive substances on the surfaces of the first base material layer and the second base material layer. By means of the second anti-corrosion layer and the first anti-corrosion layer, the first screws and the second screws can have the anti-corrosion capacity, adverse reactions between the first screws and surrounding tissues and between the second screws and surrounding tissues are reduced, the service life of the first screws and the service life of the second screws are prolonged, the first screws can be fixed together through the fixing mechanism, and the service life of the first screws is prolonged. And the practicability of the device is improved.

The application discloses a skeleton resetting device, a skeleton positioning method and device, computer equipment and a medium. The initial position coordinate system of a repaired skeleton before installation of a bone needle and the bone needle position coordinate system after installation of the bone needle are obtained, the initial position coordinate system and the bone needle position coordinate system are matched into one repaired coordinate system, the skeleton coordinate information and the bone needle coordinate information in the repaired coordinate system are added to the matching image of the repaired skeleton, and the matching image is displayed. The repaired skeleton image after matching and the coordinate information of each part of the repaired skeleton can be accurately and intuitively displayed, the existing skeleton positioning method in the prior art needs to continuously confirm multiple X-ray images, the mapping between the additional image and the actual position of the pelvis is not intuitive, the doctor needs to determine by experience, and the skeleton positioning is not accurate and the obtained skeleton coordinate information cannot be combined with the medical image of the repaired skeleton.

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.

The invention relates to a motor vehicle (1) comprising: - a front body structure (100) including a transverse bumper beam (101); - a front bumper skin (140) covering said structure; - a hood (200) the rear portion of which is pivotally mounted relative to said structure; - a lock (110) designed to cooperate with a strike wire (210) attached to said hood; - a sheet metal support (120) carrying said lock and comprising an upper attachment portion (121) fixed to a front crossmember (130) rigidly connected to said structure, said support also comprising a front portion (124) extending substantially vertically opposite said skin, between said lock and said beam to which it is rigidly connected; and - an energy absorption device (160) interposed longitudinally between said skin and said front portion of the support. Figure to be published with the abbreviation: Fig. 1

The pelvis fixing device comprises a fixing band and a spinning type tourniquet, the two ends of the fixing band are each provided with an insertion opening, the spinning type tourniquet penetrates through the insertion openings, and the two ends of the fixing band are detachably fixed through the spinning type tourniquet; a plurality of pressure-reducing inflatable cushions are symmetrically arranged in the center of the inner side of the fixing belt, the pressure-reducing inflatable cushions are communicated with an inflation assembly, and hard supporting plates are fixedly arranged at the two ends of each inflatable cushion; an invisible pocket is arranged on the outer side of the fixing band, a broadband is integrally formed in the invisible pocket, and the invisible pocket is filled with the broadband. The pelvis fixing band has the effect of effectively relieving pressure injury caused by long-time wearing of the pelvis fixing band for a patient.

Disclosed in the present application are a method and apparatus for mirroring processing-based determination of acetabular cup prosthesis information. The present application relates to the field of information processing. The method comprises: acquiring a three-dimensional bone model of a patient, and establishing a coordinate system in the three-dimensional bone model according to target feature points in the three-dimensional bone model, wherein the three-dimensional bone model at least comprises a three-dimensional model of the pelvis of the patient; when the affected-side acetabular fossa is incomplete, performing mirroring processing on a healthy-side pelvis model in the three-dimensional bone model according to the coordinate system, and determining information of the affected-side acetabular fossa according to the mirrored healthy-side pelvis model; and determining prosthesis information of an acetabular cup prosthesis according to the information of the affected-side acetabular fossa, wherein the prosthesis information comprises at least one of the following: a prosthesis model and a prosthesis implantation position. The present application solves the technical problem in the related art where the accuracy of prosthesis information is low when determining prosthesis information of an acetabular cup prosthesis according to the affected-side acetabular fossa of a patient.

The invention relates to the technical field of medical apparatus and instruments, and discloses an adjustable orthopedic tractor which comprises a fixed base provided with a pelvis clamping mechanism and a central bolt fixing hole; the composite sensing supporting system comprises a telescopic thigh supporting piece and a tail end shank supporting piece which are arranged in a linkage mode, the telescopic thigh supporting piece is movably connected to the fixed base through a first rotating connecting piece, and a first lifting type bearing mechanism is arranged on the bearing side of the telescopic thigh supporting piece; through the synergistic effect of the pelvis clamping mechanism and the central bolt fulcrum, the traction force reference is transferred from a traditional bed tail to a pelvis bony structure of a patient, traction force vectorization errors caused by deformation or displacement of a bed body are eliminated, a direct and stable mechanical reference system is provided for lower limbs, and the fracture reduction precision is remarkably improved.

The invention particularly relates to a pelvic fracture external fixation frame fixation iliac crest screw placement guider and a use method thereof. The guider comprises a drilling guide pipe, an auxiliary guide column and a connecting structure. The connecting structure comprises a connecting piece, a first puncture needle and a second puncture needle with the same structure as the first puncture needle; a drilling guide pipe and an auxiliary guide column are fixed to the two ends of the connecting piece correspondingly. One end of each puncture needle is of a pointed cone structure, and the other end of each puncture needle is fixedly installed on one side of the auxiliary guide column. The connecting piece and the two puncture needles are parallel to each other; and the length of the connecting piece is consistent with that of the two puncture needles. The optimal nail feeding point is accurately positioned through the guider, a probe opening method is combined, the Schanz nail is guided to always walk in the cancellous bone between the inner plate and the outer plate of the ilium, and finally the purposes of improving the nail placement accuracy, increasing the fixing strength, reducing complications, shortening the operation time and reducing the medical cost are achieved.

The utility model relates to the technical field of spine correction instruments, in particular to a novel flexible orthopedic device for degenerative lumbar lateral bending, which comprises a waist support belt body, waist support belt hook-and-loop fasteners matched with each other are arranged at two ends of the waist support belt body, a convex side correction device is fixedly arranged on one side of the waist support belt body, and the convex side correction device is fixedly arranged on the other side of the waist support belt body. A convex side correcting device is fixedly arranged on one side of the waist protecting belt body, a concave side correcting device is fixedly arranged on the other side of the waist protecting belt body, a convex side waist supporting device is arranged on the upper side of the convex side correcting device, a shoulder correcting device is arranged on the concave side correcting device, and the shoulder correcting device surrounds the trunk of a user and is matched with the convex side shoulder of the user. The hip adjusting belt, the convex side waist fixing belt and the shoulder correcting belt are arranged to act on the shoulders, the waist and the hip in a dynamic pulling force mode, asymmetric pulling force is applied to the two sides for targeted treatment, and abnormal body postures such as high and low shoulders, lumbar lateral protrusion and pelvis rotation are improved.

The utility model relates to medical instrument technical field provides a kind of bone surgery pelvis fixed support of pressure sore prevention, comprising: two U-shaped plates, the inner surface of two U-shaped plates is all provided with sliding slot, the inside movable embedding of sliding slot is equipped with two-way screw rod, the outer surface movable sleeve of two-way screw rod is equipped with two sliding blocks;U-shaped plate is clamped in the patient basin bone, then rotates two-way screw rod by adjusting wheel, two-way screw rod moves two arc fixed plates relatively or oppositely by sliding block, and is adjusted according to the figure of patient, better fixed at the pelvis, after being adjusted to suitable position, limit pin is embedded in the limit hole inside the outer surface of limit round plate under the elastic force of spring, can limit two-way screw rod, prevent the situation of rotary loosening, better improve the fixed effect, the outer surface of arc fixed plate is provided with multiple air holes, can improve the effect of heat dissipation and ventilation, prevent the appearance of stuffy and damp, improve the comfort.

The utility model discloses a dummy shank test fixture, which relates to the technical field of vehicle test and comprises a support mechanism, a pelvis simulation mechanism, a shank simulation mechanism and a foot simulation mechanism. Wherein the supporting mechanism comprises a rectangular screw hole plate, a supporting frame bottom plate arranged on the rectangular screw hole plate, a supporting frame moving block arranged on the supporting frame bottom plate in a sliding mode and a main supporting frame welded to the supporting frame moving block, and the pelvis simulation mechanism comprises a pelvis rotating locking block installed at the preset position of the supporting mechanism. By arranging the supporting mechanism, the pelvis simulation mechanism, the shank simulation mechanism and the foot simulation mechanism, shank test requirements of different types of dummies can be met, knee spacing, ankle spacing, shank angle and the like can be adjusted, the application range is wide, meanwhile, test dummy resources can be prevented from being occupied for a long time, and the test efficiency is improved. And the dummy shank measurement precision is high and the flexibility is good in the repetitive test.

The utility model discloses a kind of scoliosis head basin ring implantation post-lieing devices, comprising: first support structure;Second support structure;Connecting structure, connecting structure connects first lieing structure and second lieing structure, and first lieing structure and second lieing structure between form first overhanging area;Third support structure, third support structure is set to the side of first support structure away from second support structure;Fourth support structure, fourth support structure is set to the side of third support structure away from first support structure, and the side of fourth support structure away from third support structure is provided with second overhanging area.Using the above scheme, provide a kind to be after patient lieing, the bone nail of head, positioning ring is suspended in second overhanging area, the bone nail of pelvis, positioning ring is suspended in first overhanging area and realizes convenient use, and stable keeps the scoliosis head basin ring implantation post-lieing device of bone nail, head basin ring.

This invention relates to a variable stiffness clamping device for a pelvic fracture reduction robot, comprising the following structures: a lifting support module for adjusting the height of the clamping device, facilitating preoperative support and connection between the clamping device and the robot; a affected-side support module for fixing two bone pins respectively, with a docking component for quick connection of the clamping device to the robot; a first affected-side bone pin clamping module for clamping the bone pin of the anterior inferior iliac spine of the pelvis, and a second affected-side bone pin clamping module for clamping the bone pin of the anterior superior iliac spine of the pelvis. The affected-side bone pin clamping modules are driven by a motor and wires, actively adjusting the stiffness of the bone pins by changing the clamping position and reducing the cantilever length of the bone pins, thus avoiding uneven deformation or stress concentration of the two bone pins during surgery; and a healthy-side clamping module for clamping the bone pin inserted into the healthy side of the pelvis. This invention has significant advantages such as compact structure, convenient stiffness adjustment, stable clamping, and easy assembly and disassembly.