Individualized sternum prosthesis with computer-aided design and manufacturing method

Abstract

The invention relates to an individualized sternum prosthesis with computer-aided design and a manufacturing method. The method comprises the steps of collecting CT data of the chest of a patient, and establishing a three-dimensional chest model; measuring parameters of the sternum of the patient; utilizing modeling software to design the shape of manubrium of the prosthesis with the shape of biological manubrium as a reference; designing a plurality of hole channels at the connection edges of the clavicles and the ribs on the manubrium of the prosthesis; designing the size of the part, inserted in the cavity of the sternum, of the sternum prosthesis according to the size of the inner cavity of the sternum of the patient, wherein the sternum part of the prosthesis is vertically provided with hole channels, the diameter of the hole channels is 5-6 mm, the top end of the sternum of the patient needs to be excised 10-12 mm before the sternum prosthesis is placed into the cavity of the sternum, the placement position of the sternum prosthesis is completely identical to the position of the computer-aided design, and the upper end of the sternum of the prosthesis and the connection portions of the manubrium are additionally provided with ladder-like bulges. Through the adoption of the individualized sternum prosthesis with the computer-aided design, regarding the characteristics of an anatomical structure of the chest of an individual, the accurate data measurement of the sternum of the patient are achieved, the thoracic structure of the patient is perfectly matched, and the problem that the movement range of the upper limbs of the patient is limited is solved through ligament connection.

Description

technical field [0001] The invention belongs to the field of osteotomy and orthopedic equipment for orthopedic surgery, in particular to a computer-aided design individualized sternal prosthesis and a manufacturing method. Background technique [0002] The sternum is located in the middle of the anterior chest wall, with the pericardium and great blood vessels behind it. It is a flat bone with a wide upper part and a narrower lower part. In addition, the sternoclavicular joint formed by the sternal articular surface of the clavicle, the clavicle notch of the manubrium sternum, and the upper surface of the first costal cartilage can perform micro-movements in various directions, which are reflected in the lifting, lowering, and forward-backward movement of the lateral end of the clavicle. , can still do a slight rotational movement. Therefore, the sternoclavicular joint is related to the range of motion of the patient's upper limbs and affects the normal life of the patient....

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the existing sternal prosthesis manufacturing technology that the postoperative upper limb range of motion is limited due to the incomplete design of the fretting factors of the sternoclavicular joint, the present invention provides computer-aided design of individualized sternal prosthesis and The production method, the present invention completely retains the micro-movement of the sternoclavicular joint, and restores the range of motion of the patient's upper limbs to the greatest extent

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