A multi-needle guidance system for spinal radiofrequency ablation and puncture

Abstract

The invention discloses a multi-needle guide system for spinal radio-frequency ablation puncture. The system comprises puncture needles and a guide; each puncture needle comprises a puncture portion at the front end of a needle head and a guide portion at the rear portion of the needle head; each puncture needle is at least internally provided with parallel passages, and each puncture needle is further provided with a plurality of oblique passages; the oblique passages penetrate between the puncture portion and the guide portion of the corresponding puncture needle and are different from the corresponding puncture needle in inclination angle, and the front end of each oblique passage is positioned on the same side of the corresponding puncture portion; the guide comprises a connection portion and a guide arm. By the aid of the multi-needle guide system, imbedding directions of the radio-frequency electrode needles can be guided accurately, precision multi-needle guided puncture for ablation of spinal tumors is realized, the radio-frequency electrode needles are enabled to reach preset spinal portions according to designed angles and to be uniformly distributed at different spinal positions to completely cover a whole spinal structure, and consequently treatment effectiveness is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of radio-frequency ablation and puncture equipment, and in particular relates to a multi-needle guiding system for radio-frequency ablation and puncture of the spine. Background technique [0002] The complexity of the anatomical structure of the spine leads to difficulties in the surgical treatment of spinal tumors. In recent years, more and more scholars have applied radiofrequency ablation technology to the treatment of spinal tumors, and achieved good results, providing a new path for minimally invasive treatment of spinal tumors. new way. [0003] Radiofrequency ablation is a non-vascular interventional technique. Guided by various real-time imaging techniques, radiofrequency electrode needles are inserted into tumor tissue. Ion vibrations generate frictional heat, which causes thermal damage to a certain range of tumor tissue around the electrode and coagulation and necrosis, achieving the effect of k...

AI Technical Summary

Problems solved by technology

Since only one radiofrequency electrode can be inserted at a time, the ablation range of one radiofrequency electrode is limited. For large vertebral tumors, especially large tumors located in the vertebral body, the ablation range of one radiofrequency electrode often cannot cover the entire tumor organize

At the same time, the percutaneous puncture is through the pedicle. The pedicle is located in the middle and upper part of the posterior edge of the vertebral body, and its width is generally small. It is difficult for the radio frequency electrode to change direction in the pedicle, and it is difficult to reach the lower part of the vertebral body.

Therefore, it is difficult to kill the entire tumor in the vertebral body at one time, and it is necessary to change the direction or expand the range of ablation by re-punching or multiple punctures. This will increase the operation time, and there is a risk of missing certain parts of the tumor tissue, resulting in postoperative ablation. The tumor relapses rapidly, which affects the curative effect; and multiple puncture ablation aggravates the damage to the patient's body, making the patient more painful

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