Blood vessel microwave ablation needle with temperature control function and preparation method thereof

Abstract

The invention relates to a blood vessel microwave ablation needle with a temperature control function and a preparation method thereof, and belongs to the technical field of medical appliances. The ablation needle comprises a radiation head, wherein the radiation head is arranged in a conical needle, the front end of a needle rod is fixed on the conical needle, and the rear end of the needle rod is connected with a water tank; a temperature sensor is arranged on the needle rod, and a stainless steel tube and a coaxial cable are arranged in the needle rod; the stainless steel tube is arranged on the coaxial cable, and the front end of the stainless steel tube and a medium casing are sealed; a water inlet cavity is formed between the inner wall of the stainless steel tube and the coaxial cable; and a water outlet cavity is formed between the outer wall of the stainless steel tube and the inner wall of the needle rod. The ablation needle can directly percutaneously puncture to the superficial lower limb vein and agglomeration vein region of the lower limb after being positioned, and the disease blood vessel is permanently closed by adopting multi-point puncture microwave thermal coagulation therapy. The ablation needle has the advantages of short treatment time, little hemorrhage during operation, quick recovery, light patient pain and simple operation.

Description

technical field [0001] The invention relates to the technical field of medical devices, more specifically, the invention relates to a blood vessel microwave ablation needle with temperature control function. Background technique [0002] Varicose vein disease of the lower extremities, also known as chronic insufficiency of the lower extremities, is a common and frequently-occurring disease in humans. Surgical treatment is usually used in clinical practice, including high ligation of the large (small) saphenous vein, stripping of the large (small) saphenous vein and varicose veins, etc. Due to the large trauma of the operation to the patient, it usually causes pain and slow recovery, the long hospital stay has scars on the skin after surgery, and the risk of infection is high. [0003] In recent years, surgical treatment of lower extremity varicose veins has been gradually replaced by minimally invasive surgery. At present, the current minimally invasive surgery at home and a...

AI Technical Summary

Problems solved by technology

The risk of major surgery is higher due to the large trauma to the patient, usually causing pain and slow recovery, long hospital stay, postoperative skin scarring, and the possibility of infection

[0003] In recent years, surgical treatment of lower extremity varicose veins has been gradually replaced by minimally invasive surgery. At present, the current minimally invasive surgery at home and abroad mainly includes rotary subcutaneous vein extraction (TIPP), laser therapy (EVET), and radiofrequency ablation (RFA). , laparoscopic ligation, etc., but there are still problems such as large trauma, complicated operation, expensive equipment, and unsuitable for promotion.

Specifically, during radiofrequency and laser thermal coagulation, due to the difference in physical energy, the thermal coagulation of blood vessels is not completely closed, and it is relatively easy to relapse and form mobile thrombus; in addition, the indications are limited, and it cannot treat blood vessels caused by insufficiency of communication meridians. calf ulcer

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