Bone cutting navigation device capable of positioning accurately and manufacturing and using method thereof

Abstract

The invention discloses a bone cutting navigation device capable of positioning accurately and a manufacturing and using method thereof. According to the device and method, a 3D printing navigation template technology is introduced and applied to the PAO. The 3D printing navigation template technology is a product by organically combining a three-dimensional reconstruction technology in medical imaging, a computer aided design technology, a converse project technology and a 3D printing technology. Firstly, three-dimensional reconstruction is conducted on CT scanning data of a patient before surgical operation to make a doctor visually know pathology anatomic abnormities, and accurate and specific numerical values are obtained; then, surgical operation simulation is conducted before the surgical operation according to different changes of pathological anatomy, and the best personalized operation treatment scheme is made; next, the surgery field pelvic anatomical state feature and the bone cutting face are extracted according to the preoperative planning through the converse project technology, and a navigation template is designed and made into an entity through the 3D printing technology; finally, the disinfected navigation template is directly attached to the exposed pelvis and the bone cutting face in the surgical operation, and accurate bone cutting and rotating displacement of acetabulum bone blocks are completed.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to an osteotomy navigation device capable of accurate positioning, a manufacturing method and a using method thereof. Background technique [0002] Developmental dysplasia of the hip (DDH) is a common hip deformity. Its incidence rate is as high as 1.3-28.5‰. The most commonly used periacetabular osteotomy for young patients is the "PAO periacetabular osteotomy" proposed by Swiss orthopedist Ganz and his colleagues in 1983, also known as Ganz periacetabular osteotomy (Periacetabular osteotomy, PAO). ). Steppacher S D et al. used PAO to treat symptomatic DDH patients, and the excellent and good rate reached 61% in 20 years. [0003] The reasons for the difficulties and high complications of PAO surgery are as follows: First, the anatomical structure of the pelvis and hip joints in patients with DDH is complex, and the exposure during the operation is limited. It is di...

AI Technical Summary

Problems solved by technology

At present, the evaluation of orthopedics relies on intraoperative anatomical landmarks, the experience of the surgeon, and intraoperative fluoroscopy. However, intraoperative fluoroscopy is not only time-consuming, but also increases the radiation damage of patients and doctors, and it is difficult to fully express the degree of orthopedics with two-dimensional imaging. In addition, there is a lack of direct link between preoperative planning and intraoperative operation, making it difficult to meet the requirements of preoperative planning

So although the procedure has been practiced for more than 30 years, it is still not widely practiced

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