Method for producing funnel chest correction plate

Abstract

The invention discloses a method for producing a funnel chest correction plate. The method comprises the following steps: in accordance with a chest CT image of a patient with funnel chest, reconstructing a chest skeleton three-dimensional model by virtue of three-dimensional software; in accordance with a normal human thoracic model having close thoracic dimensions as well as curvature change of the thoracic model, designing a three-dimensional model of the correction plate; by virtue of finite element software, analyzing a correction shape of thoracic cavity after the correction plate is implanted in the thoracic skeleton of the patient with the funnel chest; and in comparison with the thorax of normal people, judging whether the correction plate can meet requirements or not, if so, determining design parameters of the correction plate, otherwise, re-designing the three-dimensional model of the correction plate. According to the method disclosed by the invention, the correction plate with individual shape and dimensions can be produced in accordance with the chest skeleton shape of the patient with the funnel chest and the optimum parameters of the correction plate can be obtained by virtue of a finite element method, so that harm to the patient caused by repeatedly regulating the shape of a steel sheet can be effectively prevented; and by manufacturing the correction plate before an operation, the method is conducive to shortening an operating time, reducing an operative wound and intra-operative and post-operative bleeding amounts and guaranteeing a post-operative correction effect.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a method for producing pectus excavatum orthopedic plates. Background technique [0002] Pectus excavatum (PEX for short) refers to the funnel-shaped depression of the sternum, costal cartilage and some ribs that make up the anterior chest wall toward the spine. It is the most common anterior chest wall deformity, accounting for about 87% of anterior chest wall deformities, its incidence rate is 1 / 300~1 / 400, and the ratio of male to female is about 4:1. Pectus excavatum is also the most common chest wall deformity in children. The cause of the disease is still unclear. The development of the deformity is progressive, that is, the degree of deformity of the sternum increases with age, and it may gradually evolve from symmetrical pectus excavatum to asymmetric pectus pectus excavatum. , will lead to a decrease in chest volume, affect the function of the respiratory and circulatory...

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Problems solved by technology

[0004] However, we have also noticed that there are some deficiencies in the current NUSS surgery, such as: the specific position of the surgical incision, the shape of the metal orthosis, that is, the shape of the steel plate, and the fixing method are only determined by the doctor based on clinical experience, without accurate simulation experiments and mechanical analysis. auxiliary

This has caused the effect of the operation to a large extent to depend on the subjective judgment of the doctor, and the shape of the steel plate will be adjusted repeatedly during the operation, which prolongs the operation time; possibility of harm

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