Detachable multi-functional ablation puncture needle

Abstract

The invention discloses a detachable multi-functional ablation puncture needle. The detachable multi-functional ablation puncture needle comprises a hollow handle sleeve, a jacket base, a needle inserting cylinder, and an internal needle push rod. A part of one end, extended out of a cavity of the handle sleeve and away from the jacket base, of the internal needle push rod is a push handle. One end, adjacent to the jacket base, of the internal needle push rod is fixedly connected with an ablation needle. The ablation needle is placed in the needle inserting cylinder. The push handle is suitable for enabling an ablation part of the end part of the ablation needle to be retracted into the needle inserting cylinder or pushing the ablation part out of the needle inserting cylinder in a push and pull process within a limited push and pull journey. The detachable multi-functional ablation puncture needle is capable of using a detachable structure, enabling an ablation electrode needle to leave the needle inserting cylinder as a reserved channel for postoperative management after completing the ablation, simplifying a clinical operation, relieving the working strength of doctors, shortening the operation time, and reducing the tissue puncture injury to patients.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a detachable multifunctional ablation puncture needle. Background technique [0002] Minimally invasive treatment is one of the four major treatment methods for tumors. Various ablation techniques are mainly used in the minimally invasive treatment of tumors, such as radiofrequency ablation, microwave ablation, cryoablation (argon-helium knife) and nanoknife. Correspondingly, there are various forms of ablation puncture needles for minimally invasive ablation. Existing ablation puncture needles for minimally invasive ablation are basically disposable, and all adopt integral structures, such as a radiofrequency treatment puncture needle disclosed in Chinese patent document CN1342444A. [0003] In clinical practice, after ablation surgery, in situ sampling is required at the ablation site (that is, tissue or body fluid is extracted from the ablation site) for surgical eva...

AI Technical Summary

Problems solved by technology

It can be seen that other follow-up operations such as ablation and cooling in this patent document are carried out through the puncture needle core that acts as a "guiding syringe". Ablation cannot be carried out at all. For example, the RF probe on the radiofrequency therapy puncture needle disclosed in the above-mentioned Chinese patent document CN1342444A has an umbrella-shaped structure after being pushed out from the metal sleeve, and a straight line structure after contraction. The radiofrequency probe in the form of an umbrella-shaped structure The probe cannot be inserted from the tail end of the puncture needle core of CN104958104A

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