Internal cooling microwave catheter capable of monitoring temperature in real time and system

Abstract

The invention relates to an internal cooling microwave catheter capable of monitoring temperature in real time and a system. Aiming at tumors in the hollow organs including the bile duct, the esophagus, the colorectum, the sinuses ventriculi and the like, the invention provides a microwave catheter fixedly provided with an eccentric sacculus at the far end of a catheter body and a system, the eccentric sacculus and a microwave emission part are accurately placed at the position where the tumor of the lumen is located for treatment, aiming at primary hepatic carcinoma portal vein and vena cavacancer embolus, partial modification is made on the basis of the balloon catheter and the system, a hydrophilic super-lubricant guide wire capable of forming a loop at the far end of the catheter replaces the eccentric sacculus, and a microwave antenna and a thermocouple temperature probe are pushed for attaching to the cancer embolus in the vessel lumen or the tumor in the tracheal bronchus lumenfor treatment.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to an internal cooling microwave catheter and a system for real-time monitoring of temperature, which can be used for treating intraluminal tumors. Background technique [0002] Primary malignant tumors in inoperable hollow organs or primary liver cancer portal vein and inferior vena cava tumor thrombi are difficult and hot spots in the field of cancer treatment research today. Systemic chemotherapy, radiotherapy and other palliative treatments for complications It is the main treatment for unresectable luminal tumors, but the treatment effect is extremely limited. The application prospect and scope of the device of the present invention are illustrated below with several common luminal malignant tumors: [0003] Esophageal cancer: Esophageal cancer is one of the leading causes of cancer deaths and the eighth most common malignancy worldwide. Statistics in 2008 showed that the annual ...

AI Technical Summary

Problems solved by technology

This radiofrequency ablation catheter has some disadvantages: it cannot monitor the treatment temperature in real time; two ring electrodes must be in contact with the tumor tissue to achieve the effect of thermal ablation, and the contact between the ring electrode and normal bile duct tissue can lead to non-targeted thermal ablation of bile duct tissue damage

There are mainly the following problems: (1) Intraluminal tumors grow unevenly in the tube wall, some grow eccentrically, or only part of the tube wall is involved, which requires microwave ablation electrodes to be as close as possible to the tumor, and at the same time Avoid normal tissue damage; (2) Chinese domestic scholars have used Emcision’s Habib Endo HPB bipolar radiofrequency catheter to treat liver cancer portal vein tumor thrombus, but due to the difficulty of radiofrequency ablation electrodes sticking to the tumor and damage to the normal portal vein wall, The treatment effect is not satisfactory, so it is necessary to design a unique microwave ablation catheter system, which can place the tumor thrombus in the vascular cavity within the range of microwave radiation, and maintain the patency of the portal vein or inferior vena cava, so as not to damage the damaged Secondary damage to the liver

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