15 results about "Deformity correction" patented technology

The invention discloses an idiopathic knee joint deformity correction method based on combination of growth curve prediction and absorbable material time gradient regulation and control, and is applied to the technical field of biomedical materials. Comprising the following steps: acquiring lower limb bone length data of a normal child, and drawing a growth curve; constructing and fitting a lower limb bone length model by using the growth curve data, and constructing a mathematical model for correcting idiopathic knee varus and valgus; constructing a prediction model to calculate the time of implanting the child patient with idiopathic genu varum into the steel plate for fixation during the semi-epiphyseal fixation; the absorbable zinc-magnesium alloy internal fixation nail plate with different in-vivo absorption time gradients is developed; the zinc-magnesium alloy internal fixation nail plate with the corresponding absorption time is selected for correction according to the time required by different child patients to be implanted into the steel plate for fixation. After a child patient receives a semi-epiphyseal block operation to achieve the correction effect, the internal fixation steel plate can be automatically absorbed and broken, the operation of taking out internal fixation again is omitted, the operation risk and pain are reduced, and the treatment cost is reduced.

The invention discloses a characterization method for describing tibia malformation correction path features, and the characterization method comprises the following steps: S1, building a bone section model, and modeling a bone section after osteotomy into a closed ring surface with the tail end of the bone section as the center; s2, according to the total correction period, the total adjustment amount of all traction rods of the parallel external fixator is averagely distributed every day, and then joint space equal-interval discrete planning is achieved; s3, constructing correction path characteristic evaluation indexes including rod length adjustment rate, bone section position stretching rate and bone section posture stretching speed; s4, the new bone shape is visually represented, the growth process of the bone section is represented as a series of discrete closed ring surfaces along the correction path, and the new bone shape is represented as the volume swept by the series of discrete closed ring surfaces along the correction path. According to the method, the visual representation of the new bone generation process in the malformation correction process is realized, so that a clinician is assisted to carry out feasibility analysis and evaluation on a preoperative correction prescription.

A method of generating a correction plan for correcting a deformed bone includes inputting to a computer system a first image of the deformed bone in a first plane and inputting to the computer system a second image of the deformed bone in a second plane. Image processing techniques are employed to identify a plurality of anatomical landmarks of the deformed bone in the first image. The first image of the deformed bone is displayed on a display device. A graphical of the deformed bone is autonomously generated and graphically overlaid on the first image of the deformed bone on the display device, the graphical template including a plurality of lines, each line connected at each end to a landmark point corresponding to one of the anatomical landmarks. A model of the deformed bone may be autonomously generated based on the graphical template.

This invention discloses a biodegradable zinc alloy wire for microtia correction surgery and its preparation method, belonging to the field of biomedical materials. The biodegradable zinc alloy wire for microtia correction surgery is characterized in that it is a Zn-Cu-Mn-Fe zinc alloy, with the alloy element composition by mass percentage as follows: 0 < Cu ≤ 3 wt.%, 0 < Mn ≤ 1 wt.%, 0 < Fe ≤ 1 wt.%, and the remainder being Zn. This alloy wire is prepared through processes including melting, casting, reverse extrusion, cold drawing combined with hot drawing, and heat treatment. The Zn-Cu-Mn-Fe quaternary alloy wire obtained by this invention has a tensile strength of 100–150 MPa, a yield strength of 80–120 MPa, and an elongation greater than 58%. It possesses the excellent plasticity, suitable tensile strength, and yield strength required for suture materials in microtia correction surgery. It can maintain the required mechanical properties in the early stages of implantation and gradually degrades completely under the influence of implant tissue fluid in the later stages.

The invention discloses an automatic reading method, equipment and device for a pointer meter. The method comprises the following steps: acquiring an original image of the pointer meter; performing malformation correction on the original image to obtain a malformation corrected image; marking the malformation correction image to obtain a pointer rotation center surrounding frame, a pointer indication part surrounding frame and a dial character surrounding frame, and thus obtaining a pointer rotation center point coordinate, a pointer indication part center point coordinate, a scale number center point coordinate and a scale value; obtaining a pointer vector according to the pointer rotation center point coordinate and the pointer indication part center point coordinate; obtaining at least two scale vectors according to the pointer rotation center point coordinate and the scale number center point coordinate; and obtaining a pointer reading according to the scale value, the pointer vector and the scale vector. According to the method, the reading error can be reduced in a complex industrial environment, the system robustness is enhanced, the pointer reading can be accurately calculated, and the high-precision requirement required by industrial production automation is met.

The application relates to the technical field of surgical assistance, and discloses a foot deformity correction surgery planning and implementation method, which comprises the following steps: fusing multi-modal medical images and dynamic function data to construct a high-fidelity foot digital twin model; intelligently quantitatively evaluating and mechanismally analyzing deformities by using a deep learning network combined with a knowledge graph; automatically optimizing in a virtual space by using a multi-agent reinforcement learning algorithm to generate a personalized surgery plan verified by biomechanical simulation; converting the optimized scheme into augmented reality navigation information and robot control instructions to guide a surgical robot to perform adaptive and accurate osteotomy and reduction operations; dynamically evaluating execution deviations and guiding correction by using real-time three-dimensional scanning and registration technology during the operation, and intelligently matching and implanting internal fixators; immediately performing function verification after the operation, and generating a personalized digital rehabilitation scheme and long-term curative effect prediction for the patient based on the operation result. The application constructs an intelligent surgery ecological system throughout the whole process of "diagnosis, planning, implementation, evaluation and management", and significantly improves the accuracy, safety, predictability and scientific level of curative effect management of foot deformity correction surgery.

The invention relates to an intelligent fusion cage for lumbar malformation correction, and relates to the technical field of medical instruments, the intelligent fusion cage is formed by fixedly connecting three main frame bodies side by side, the upper end and the lower end of each main frame body are fixedly connected with a supporting body, the upper surface of each supporting body is of a wave-shaped structure and is composed of a plurality of convex bodies, the wave crests of each convex body are fixedly connected with antibiotic microspheres, and the wave troughs of each convex body are provided with BMP-2 slow-release gel; a relieving bag is fixedly connected into the supporting body, one end of the relieving bag is of a frustum-shaped structure, and the central point ratio CPR of the fusion cage is larger than or equal to 50% when the fusion cage is implanted; convex holes are annularly formed in the upper and lower surfaces of the main frame body, VEGF nano-liposomes are placed in the main frame body, permeation holes I with honeycomb structures are formed in the two side ends of the main frame body, and permeation holes II communicated with the interlayer channels are formed in the main frame body close to the bottom joint of the support body; the support body and the relieving capsule are composed of a PLGA / silk fibroin / nHA compound, the main frame body is Mg-Zn-Sr alloy, and the alloy is degraded to release ions to promote new bone ingrowth.

1. The name of the design product: turnover device (corrector for chest wall deformity). 2. The use of the design product: turnover device for chest wall deformity corrector. 3. The design points of the design product: in the perspective view. 4. The picture or photo that best indicates the design points: perspective view.

The embodiment of the application provides a kind of musculoskeletal collaborative deformity correction method and robot, comprising: with the expected pose of bone correction, the change rate of expected pose, the actual displacement amount of pneumatic component, the rigidity parameter and damping parameter of pre-set, the torque signal of torque sensor acquisition as input, by bone correction controller, the first pressure signal for controlling pneumatic component inflation and deflation is output, so that pneumatic component is applied to bone hard tissue by inflation and deflation Correction force;With the collected electromyographic signal as input, the predicted muscle fatigue degree is output using the pre-constructed muscle fatigue prediction model;According to the predicted muscle fatigue degree, determine the air bag adjustment pressure;With air bag adjustment pressure and the current pressure of the air bag as the input of muscle correction controller, the second pressure signal for controlling air bag inflation and deflation is output by the muscle correction controller, so that air bag is applied to muscle soft tissue by inflation and deflation Correction force.The application can promote the collaborative rehabilitation of bone hard tissue and muscle soft tissue.

The embodiment of the application provides a kind of muscle-bone coordinated vibration stimulation auxiliary deformity correction control method and robot, comprising: the vibration frequency of the vibration frequency that first oscillator model output by pre-construction is collected as the input of first fuzzy PID controller, by the first pressure signal for controlling the inflation and deflation of pneumatic component that controller outputs, make pneumatic component exert vibration stimulation to bone hard tissue;With the vibration frequency of the vibration frequency that second vibrator model output by pre-construction is collected as the input of second fuzzy PID controller, controller outputs the second pressure signal for controlling the inflation and deflation of air bag, to the vibration frequency that second vibrator model output is the input of hysteresis compensation network, by hysteresis compensation network output hysteresis compensation signal, make air bag according to the inflation and deflation of second pressure signal and hysteresis compensation signal and carry out vibration stimulation to muscle soft tissue, can promote the coordinated rehabilitation of bone hard tissue and muscle soft tissue.

The present application relates to a kind of metatarsophalangeal joint replacement prosthesis for hallux valgus patient, it is related to medical instrument technical field, it includes toe bone prosthesis, metatarsal bone prosthesis and the toe bone platform pad between them;The handle body surface of metatarsal bone prosthesis and toe bone prosthesis is provided with serrated structure;Metatarsal bone prosthesis is close to toe bone end and is equipped with limiting groove, and toe bone platform pad is close to metatarsal end and is equipped with limiting lug, limiting lug is embedded in limiting groove to form hinged connection structure, so that joint activity is constrained to single sagittal plane.The present application fills the clinical blank of severe hallux valgus metatarsophalangeal joint replacement prosthesis, through stable hinged structure, lengthened serrated intramedullary canal handle and multi-angle adaptation design, while realizing deformity correction and long-term stability, joint activity is retained.

This invention is a method and tool for measuring and correcting deformities during osteotomy and treatment of fractures. The tool designed to restoring, alignment and correcting deformities of bone and joints is based on preoperative imaging and calculation of the deformity angle and planning for the deformity correction, the tool has a mechanism and power to force the bone to move according to the planning trajectory aiming at normal alignment during osteotomy and treatment of fracture and dislocation, it has a gauge to measure the degree of correction and the value of the bone displacement needed to overcome the bone overlapping and deformity angle in the fracture zone.

The application discloses a lower limb deformity correction robot and belongs to the technical field of rehabilitation aids, which comprises a pasting type flexible corrector and a variable rigidity external fixator which are synchronously driven and used for the cooperative correction of lower limb soft tissues and skeletal hard tissues. The lower limb deformity correction robot provided by the application comprises the orthosis and the variable rigidity external fixator which are used for the cooperative correction of lower limb soft tissues and skeletal hard tissues, can realize the synchronous and cooperative correction of the soft tissues and the skeletal hard tissues, and is beneficial to the muscle-bone integrated physiological function reconstruction and repair of the lower limb deformity.

The invention name of the present disclosure is "Hinge detection for orthopedic fixation." A first image and a second image of an anatomical segment with an attached fixator are displayed. An indication of first image hinge locations of a plurality of hinges of the fixator in the first image can be received. Projected second image hinge locations can be determined based at least in part on the first image hinge locations. Hinge candidates having shapes associated with the plurality of hinges can be detected in the second image. The hinge candidates can be detected by computer software using image analysis techniques based on automated software. Adjusted second image hinge locations can then be calculated based at least in part on the projected second image hinge locations and candidate second image hinge locations. The adjusted second image hinge locations can be used to determine physical locations of the fixator and anatomical segment in three-dimensional space, which can be used to determine manipulations of the fixator for deformity correction.