Additive-manufactured guiding positioning assembly for jawbone tumor resection and reconstruction

Abstract

The invention provides an additive-manufactured guiding positioning assembly for jawbone tumor resection and reconstruction. The additive-manufactured guiding positioning assembly sequentially comprises a first guiding positioner, a second guiding positioner and a third guiding positioner according to the jawbone tumor resection and reconstruction operation process; the first guiding positioner is fixed to the fibula and assists in fibular osteotomy shaping; the second guiding positioner is fixed to the sclerotin parts of the front side and the back side of a jawbone tumor and assists in jawbone tumor resection; the third guiding positioner is connected with the osteotomy part of the fibula and connected between the sclerotin parts of the front side and the back side of the position where the jawbone tumor is resected and assists in jawbone reconstruction by taking the osteotomy part of the fibula as grafted bone. By means of the additive-manufactured guiding positioning assembly, operations such as fibular osteotomy, jawbone tumor resection and jawbone reconstruction can be guided to be accurately implemented, operation is easy and convenient, the experience requirements for an operator are low, and the problem of surgical operation errors caused due to the fact that the operator operates by feel can be completely eradicated.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a guiding and positioning component for jaw tumor resection and reconstruction manufactured by additive manufacturing. Background technique [0002] Tumor invasion, inflammation, trauma and radiation therapy are the main causes of jaw destruction. Surgical treatment often requires resection of a large jaw, which will inevitably lead to facial deformity and loss of occlusal and masticatory functions. This requires sophisticated repair and reconstruction techniques. It is currently the most commonly used method to intercept a non-load-bearing section of fibula from the lower leg and mold it into the shape of the jaw to reconstruct the jaw. However, the following deficiencies generally exist in jaw tumor resection and reconstruction at home and abroad: [0003] (1) Since the shape of the calf fibula is straight, and the jaw is a multi-dimensional mixture of L-shaped and arched, the d...

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Problems solved by technology

[0003] (1) Since the shape of the calf fibula is straight, and the jaw is a multi-dimensional mixture of L-shaped and arched, the doctor needs to cut off the fibula multiple times and bend it into a shape similar to the jaw during the operation, which is difficult to imagine. As we know, the operation is time-consuming and labor-intensive, and the operator requires high experience, which is also the main reason for the unsatisfactory reconstruction effect.

[0004] (2) Jaw tumor resection is performed under semi-blind vision. The operation space is small, the technical requirements are high, and the operation is difficult. Due to lack of experience, the resection volume error is too large, resulting in poor matching of fibula and jaw defects, and easy Residual diseased tissue, there is a risk of recurrence after surgery

[0005] (3) At present, most domestic and foreign counterparts focus on the morphology of jaw reconstruction, that is, the recovery of the patient's appearance, but ignore the recovery of the patient's occlusal and masticatory function. In fact, poor occlusal and masticatory function has a greater impact on the patient's quality of life. Big

We completed a large number of jaw reconstruction cases in the early stage, and successfully restored the patient's appearance, but most of the patients had difficulties with dentures in the later stage, which affected the recovery of occlusal and masticatory functions

Restoration of removable dentures on the transplanted fibula often leads to poor retention and low chewing efficiency, while implants are well retained and are the most ideal way to restore occlusal function, which is beneficial to the dentures, especially the jaws of the implants The reconstruction plan is the goal pursued by oral and maxillofacial surgeons and prosthodontists, but most patients lose their implants due to inaccurate and unreasonable jaw reconstruction positions, or poor implant placement angles or depths Chance

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