Surgical navigation system for ultrasonically guiding thermal ablation of thyroid tumors

Abstract

The invention discloses a surgical navigation device for ultrasonically guiding thermal ablation of thyroid tumors. The surgical navigation device for ultrasonically guiding thermal ablation of thyroid tumors comprises an optical positioning device (1), a tracked object (2), two-dimensional handheld ultrasonic scanning equipment (3), an ultrasonic probe (4), an image workstation (5) and display equipment (6). Wherein the ultrasonic probe (4) is connected with the two-dimensional handheld ultrasonic scanning equipment (3), the image workstation (5) further comprises an image acquisition card (51), the two-dimensional handheld ultrasonic scanning equipment (3) outputs signals to the image acquisition card (51), and the signals are processed by the image acquisition card (51) and then output to the display equipment (6).

Description

technical field [0001] The invention belongs to the technical field of medical equipment. In particular, it relates to a surgical navigation system that can be used for ultrasound-guided thermal ablation of thyroid tumors. Background technique [0002] The incidence of thyroid nodules is increasing day by day. With the widespread application of high-frequency ultrasound, the incidence of thyroid nodules in the population can be as high as 19%–68%. High-frequency ultrasound is the preferred imaging method for thyroid nodules, and ultrasound-guided fine-needle aspiration cytology is the preferred method for diagnosing benign and malignant thyroid nodules. For benign nodules that are large in size and cause compression symptoms and affect the appearance, ultrasound-guided thermal ablation is the minimally invasive treatment recommended by domestic and foreign guidelines; Ultrasound-guided thermal ablation therapy can also effectively kill the lesion, reduce the damage caused ...

AI Technical Summary

Problems solved by technology

[0004] The ablation needle is not clearly displayed in the ablation area due to gasification during ablation and uneven tissue echoes after ablation

Although the mobile ablation technique uses point-by-point ablation from the deep side to the superficial side, from the cephalic side to the caudal side (or from the caudal side to the cephalic side), so that the unablated area is kept outside the gas shielding area as much as possible, however, due to the amount and distribution of gas generated The position of is uncertain, which will still cause occlusion

[0005] The ablation needle is not clearly displayed, leading to the following problems: 1. Incomplete ablation of some lesions, not reaching a sufficient safety margin, or part of the tumor tissue is missed and not completely ablated; 2. Supplementary ablation to avoid tumor tissue being missed leads to The increase of the total energy of ablation will cause damage to the surrounding tissue; 3. The position of the ablation needle cannot be well displayed, and the position is too deep to damage the surrounding tissue structure

However, the above-mentioned navigation system device has limitations, which are as follows: 1. The instrument device is complicated and inconvenient for surgical operation; 2. The magnetic field may interfere with the signal of the ablation instrument; 3. The thyroid gland is close to the surrounding important structures, which is difficult for navigation during ablation surgery. The required accuracy is high, and the accuracy of current magnetic navigation is not enough to meet the requirements of all thyroid nodule ablation

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