Puncture needle propelling mechanical arm and ablation system using same

Abstract

The invention discloses a puncture needle propelling mechanical arm, which comprises a mechanical arm body, a propulsion device and an ablation needle. A shaft mechanical arm, the propulsion device includes a frame, and the frame is provided with a linear guide rail and a moving slide table, and the movable slide table can slide back and forth along the linear guide rail in the linear guide rail, and the ablation needle passes through the ablation needle holder Installed on the bottom of the moving slide table, the present invention also provides an ablation system including the aforementioned puncture needle propelling mechanical arm, which has the advantages of precise positioning of the lesion, complete ablation and resection, and at the same time protects doctors from radiation harm.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a puncture needle propelling mechanical arm and an ablation system using the puncture needle propelling mechanical arm. Background technique [0002] When a lesion occurs inside the human body, and the patient's physical condition does not allow surgical resection, sometimes it is necessary to use puncture to biopsy or treat the lesion (radiofrequency ablation, chemical ablation, microwave ablation). In recent years, microwave ablation has been widely used. Microwave refers to high-frequency electromagnetic waves with a frequency between 300MHz and 300GHz and a wavelength between 1 meter (less than 1 meter) and 0.1 cm. As a kind of electromagnetic wave, microwave also has wave-particle duality. The energy of microwave quantum is 199×10-25~1.99×10-21 Joule. The microwave magnetic field can cause the surrounding molecules to rotate at high speed and heat up by friction, so that the...

AI Technical Summary

Problems solved by technology

Due to repeated punctures and poor puncture accuracy of tumor targets, surgical complications increase and directly affect the treatment effect

[0004] In addition, the existing stereotactic technology is difficult to apply to other parts of the human body, the main reason is that the position of soft tissues in other parts of the human body is not fixed relative to the surrounding bone tissue, making it difficult to obtain consistent coordinate positioning in the image space and patient space

Therefore, the interventional puncture of other parts of the human body does not have a fixed guiding positioning / posture device that can fix the direction of the puncture needle. Usually, real-time CT images are used to guide, but because there is no puncture guiding positioning / posture, there are still gaps in the puncture process. Blindness, the puncture instrument in the hands of the doctor does not have an objective and accurate position mark, it is difficult to fix the puncture needle on the predetermined trajectory during the puncture process, only relying on the doctor's personal experience, it is necessary to continuously perform image scanning to adjust the direction, the final result may still be There is a certain deviation from the ideal planned route, which is time-consuming and affects the treatment effect

In addition, when the doctor holds the puncture needle with his hand during the CT scan, he will suffer unnecessary radiation exposure

[0005] Due to many human factors, the needle insertion is often inaccurate, which affects the treatment accuracy.

Sometimes it is necessary to repeat the needle for many times, and in severe cases, it will lead to mispuncture, which will bring great pain and risk to the patient

In addition, for tumor patients, incomplete resection may occur during surgery, which is also a serious hidden danger for patients, and may cause recurrence and other consequences due to incomplete tumor resection

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