A minimally invasive tumor isolation necrosis device

Abstract

The invention relates to the technical field of minimally invasive tumor medical devices, and discloses a minimally invasive tumor isolation necrosis device, including a catheter, the catheter includes an integrally formed ball end and a columnar part, and the ball end and the columnar part are provided with a through guide hole and a second Two grouting holes, the guide hole includes a connected pre-bending area and an area to be bent, the first grouting pipe is pierced in the pre-bending area and the area to be bent, the first grouting pipe is a metal material with good thermal conductivity and toughness, at least Part of the pre-bending area is set inside the ball end, and a screw feed rod is connected to the bending area in rotation. The screw feed rod is screwed to the first grouting pipe, and the first grouting pipe is provided with a first grouting pipe on the front side wall of the first grouting pipe. The first grouting hole is arranged away from the ball end, the second grouting hole is connected with the second grouting pipe, and the inner wall of the second grouting hole and the area to be bent is embedded with a heating part. The invention overcomes the defects in the prior art, thereby realizing minimally invasive tumor isolation and effectively inactivating tumors.

Description

technical field [0001] The invention relates to the technical field of minimally invasive tumor medical devices, in particular to a minimally invasive tumor isolation necrosis device. Background technique [0002] Non-vascular interventional therapy for tumors is a non-vascular interventional therapy that uses various instruments to destroy the lesions of tumor-infected organs under the guidance of medical imaging equipment such as X-ray, CT, B-ultrasound, and MRI. It mainly includes Percutaneous intratumoral drug injection, percutaneous multi-electrode radiofrequency ablation, etc., but the above methods have the following defects in the treatment of small tumors: [0003] 1. Percutaneous intratumoral drug injection, using a suitable needle to percutaneously puncture into the lesion, and directly inject antineoplastic drugs into the tumor for treatment. The sensitivity of the drug has a huge impact on the therapeutic effect, and it is mainly used to relieve clinical symptom...

AI Technical Summary

Problems solved by technology

[0003] 1. Percutaneous intratumoral drug injection, using a suitable needle to percutaneously puncture into the lesion, and directly inject antineoplastic drugs into the tumor for treatment. The sensitivity of the drug has a huge impact on the therapeutic effect, and it is mainly used to relieve clinical symptoms , shrink the tumor, but can not cure the tumor;

[0004] 2. Percutaneous multi-electrode radiofrequency ablation, radiofrequency ablation as a physical ablation method, research reports, the local recurrence rate of liver cancer after RFA is 11%-36%, and the recurrence rate of patients with large lesions or close to large blood vessels It will be higher, the local recurrence rate of metastatic liver cancer is even as high as 50%, radiofrequency ablation is difficult to control the range of tumor cell removal, and it is easy to miss the tumor cells

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