Microwave ablation needle with feedback function for treating hemangioma and vascular malformation

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a microwave ablation needle with a feedback function for treating hemangioma and vascular malformation. The microwave ablation needle comprises a handle, a needle tip is arranged at one end of the handle, and a piezoresistive pressure sensor is fixedly mounted on one side of the needle tip through a dowel bar. The piezoresistive pressure sensor used for detecting and feeding back the pressure borne by the needle head is arranged at one end of the needle point, the pressure borne by the needle point can be fed back through the piezoresistive pressure sensor, and medical staff judge whether the needle point punctures the surface of the tissue to enter the tissue or not according to whether the fed-back pressure value changes suddenly; and a deviation detection assembly is fixedly mounted on the guide part of the needle head, when tissue which is not punctured by the needle tip deviates, the diseased tissue makes contact with and extrudes the outer wall of a needle tube, the deviation position of the needle head is fed back through the deviation detection assembly at the corresponding part, so that the medical staff can accurately judge the puncture degree of the needle head conveniently, and non-penetration or over-penetration is avoided.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a microwave ablation needle with a feedback function for treating hemangioma and vascular malformation. Background technique [0002] Ablation therapy is mainly used in medical fields such as cardiovascular medicine and tumor surgery. The microwave energy provided by the microwave ablation needle used in the ablation therapy radiates to the tumor focus tissue, and the microwave energy causes the ions and polar water molecules in the tumor focus tissue to rotate, vibrate, and rub against each other to generate a thermal effect, and the tumor cells are killed in the form of heat. Live, in order to achieve the purpose of tumor treatment, when the microwave ablation needle is performing puncture treatment, when the passing biological tissue is a capsule structure, it will not be punctured under a small force, only under the pressure of the microwave needle At thi...

AI Technical Summary

Problems solved by technology

The microwave energy provided by the microwave ablation needle used in the ablation therapy radiates to the tumor focus tissue, and the microwave energy causes the ions and polar water molecules in the tumor focus tissue to rotate, vibrate, and rub against each other to generate a thermal effect, and the tumor cells are killed in the form of heat. Live, in order to achieve the purpose of tumor treatment, when the microwave ablation needle is performing puncture treatment, when the passing biological tissue is a capsule structure, it will not be punctured under a small force, only under the pressure of the microwave needle At this time, it is difficult to judge whether the microwave needle has passed through the capsule from the medical image, which brings safety hazards to the treatment

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