Splitting reducing microwave needle

Abstract

The invention provides a splitting reducing microwave needle. The splitting reducing microwave needle comprises a puncture needle core, a reducing taper head is arranged at the rear outer ring of thehead end of the puncture needle core and comprises a reducing taper head head end and a reducing taper head tail end, the diameters from the reducing taper head head end to the reducing taper head tail end are gradually increased, and a sleeve is arranged inside the tail end of the puncture needle core. In an operation, the splitting reducing microwave needle can directly puncture the skin of a patient, and directly enters a focus position; hemorrhage is reduced, and the postoperative healing time is shortened, which is beneficial to postoperative recovery of the patient.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a split-type variable-diameter microwave needle. Background technique [0002] Microwave ablation is a thermal ablation technique for tumor treatment that has developed rapidly in the past 10 years. The heating mechanism of microwave to biological tissue has two aspects: one is dipole heating, which is also the main factor of microwave heating. Under the action of a microwave electromagnetic field with a frequency >900MHz, the polarity of dipoles such as water molecules in the tumor is out of balance, and rapidly changes direction with the alternation of the microwave electric field, flipping and rubbing against each other at a frequency of more than one million times per second. A large amount of heat is generated to cause tissue denaturation and necrosis; on the other hand, ion heating, under the action of microwave electromagnetic field, the ions in the tissue also change ...

AI Technical Summary

Problems solved by technology

On the other hand, when a doctor encounters a hard tumor, it is difficult for the traditional microwave needle to directly penetrate the hard shell of the tumor and enter the center of the tumor for ablation due to insufficient puncturing force.

In clinical practice, such as microwave ablation of thyroid tumors, thyroid tumors have a hard shell, and traditional microwave needles cannot directly pierce the hard shell. Doctors can only use microwave ablation and puncture at the same time, and gradually send traditional microwave needles into the thyroid gland. The location of the center of the tumor, and then perform precise microwave ablation

Due to the insufficient puncture force of traditional microwave needles, the operation time is greatly increased, and the operation difficulty is also increased

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