Detachable multi-functional ablation puncture needle

A detachable, multi-functional technology, applied in the field of medical devices, can solve the problems of enlarging the patient's wound surface, affecting the effect of ablation, and being unable to insert, achieving obvious direct and indirect benefits, avoiding tissue puncture injury, and reducing work intensity.

Pending Publication Date: 2018-08-28
SHANGHAI 3F ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Detachable multi-functional ablation puncture needle
  • Detachable multi-functional ablation puncture needle
  • Detachable multi-functional ablation puncture needle

Examples

Experimental program
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Effect test

Embodiment 1

[0027] see Figure 1-3 , a detachable multifunctional ablation puncture needle, which includes a hollow handle cover 1, one end of the handle cover 1 is detachably connected to the outer cover base 2, and the center position of the outer cover base 2 is fixedly provided with a pin cylinder 3, the needle insertion cylinder 3 extends from the outer casing base 2 to a side away from the outer casing base 2, the needle insertion cylinder 3 is integrally injection molded with the outer casing base 2, and the needle insertion cylinder The free end of 3 ( image 3The right end shown) is obliquely cut into the tip of the needle; the inside of the handle cover 1 is provided with an inner needle push rod 4, and the end of the inner needle push rod 4 extending away from the outer cover base 2 extends out of the handle cover 1 The inner part of the inner cavity is a push handle 5, and the push handle 5 pushes the inner needle push rod 4 to have a limit push-pull stroke in the axial direc...

Embodiment 2

[0032] see figure 1 , Figure 4 , as another embodiment of the present invention, on the basis of the first embodiment, the plug-in cooperation between the outer cover base 2 and the handle cover 1 in this embodiment can also adopt the following method:

[0033] An insertion portion 21 for inserting into the hollow cavity of the handle cover 1 is provided at one end of the outer cover base 2 close to the handle cover 1, and the outer cover base 2 and the handle cover 1 are plugged together. The connection is in the form of plug-in connection, which is convenient for installation or removal, and at the same time, there is no need to perform circumferential rotation during disassembly, thereby avoiding the cutting of the tissue when the insertion tip part of the needle barrel rotates.

[0034] Specifically, the diameter of the insertion part 21 is smaller than the diameter of the outer casing base 2, and the connection between the insertion part 21 and the outer casing base 2 f...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/14A61B2018/1425A61B2018/00589
Inventor 孙路明方志庆王立新
Owner SHANGHAI 3F ELECTRONICS
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