CN215228359U

CN215228359U - Microwave ablation needle for enhancing ultrasonic development

Info

Publication number: CN215228359U
Application number: CN202121343114.8U
Authority: CN
Inventors: 干育红; 陈漪; 周颖婷; 葛宁灵
Original assignee: Zhongshan Hospital Fudan University
Current assignee: Zhongshan Hospital Fudan University
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-21
Anticipated expiration: 2031-06-17

Abstract

The utility model relates to a microwave ablation needle that makes ultrasonic development reinforcing, this microwave ablation needle include the needle tubing and set up the syringe needle in needle tubing one end, and the surface of syringe needle is equipped with groove array, and the surface cladding of syringe needle has the pyrocondensation membrane, is equipped with the air cavity between pyrocondensation membrane and the groove array. Compared with the prior art, the utility model discloses a set up groove array on the syringe needle surface to cladding pyrocondensation membrane makes and forms the air cavity between pyrocondensation membrane and the groove array, can improve under the ultrasonic image guide, and the discernment degree of microwave ablation needle puncture in-process improves the rate of accuracy of clinical puncture, reduces because discernment is unclear leads to the situation of repeated needle insertion many times.

Description

Microwave ablation needle for enhancing ultrasonic development

Technical Field

The utility model belongs to the technical field of the microwave ablation needle, a microwave ablation needle that makes ultrasonic development reinforcing is related to.

Background

The microwave ablation needle is mainly used for ablation treatment of solid tumors. The existing microwave ablation needle generally comprises a puncture needle head, a needle rod, a cooling passage, an operating handle and the like, and is guided by images to assist accurate positioning when clinical treatment is carried out. At present, the method is mainly developed under the ultrasonic guidance or CT guidance, and the ultrasonic guidance is wider in clinical application due to the advantages of safe and simple operation, capability of adjusting the puncture direction in real time and the like.

Ultrasonic guidance, namely, tumor positioning and puncture guidance are carried out by adopting an ultrasonic imaging device, and a microwave ablation needle is placed into target solid tumor tissue for microwave ablation treatment. The conventional diameters of the microwave ablation needles are 17Gauge, 16Gauge, 15Gauge and the like clinically, but the individual difference of patients is large, and the position conditions of tumor focus are different, so that the position information of the puncture needle head of the ablation needle in the visceral organs is difficult to distinguish under ultrasound in practical application, whether the target tumor tissue is reached is difficult to judge, and the puncture difficulty and the possibility of postoperative complications are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a microwave ablation needle that makes supersound development reinforcing can improve the supersound of microwave ablation needle puncture syringe needle and show the definition down, overcomes the unclear problem of current microwave ablation needle ultrasonic image guide lower needle point portion position development.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a make microwave ablation needle of supersound development reinforcing, this microwave ablation needle includes the needle tubing and sets up the syringe needle in needle tubing one end, the surface of syringe needle be equipped with groove array, the surface cladding of syringe needle have a pyrocondensation membrane, pyrocondensation membrane and groove array between be equipped with the air cavity.

Furthermore, a coaxial cable is arranged inside the needle tube.

Further, the groove array comprises a plurality of groove groups which are arranged on the surface of the needle head in parallel along the axial direction.

Further, the groove group comprises a plurality of grooves which are uniformly arranged on the surface of the needle head along the circumferential direction.

Furthermore, the groove is hemispherical.

Or the groove is columnar.

Or, the groove is conical.

Further, the syringe needle include syringe needle pole portion and syringe needle point portion, the one end and the syringe needle point portion of syringe needle pole portion link to each other, the other end links to each other with the needle tubing, groove array set up the surface in syringe needle pole portion.

Further, the heat-shrinkable film is coated on the surface of the needle rod part and covers the groove array.

Or the heat-shrinkable film is simultaneously coated on the rod part of the needle head and the surface of part of the tip part of the needle head, covers the groove array and simultaneously exposes the tip end of the tip part of the needle head.

The utility model carries out mechanical processing, borax polishing or laser processing and other modes on the surface of the needle head of the microwave ablation needle, so that the surface of the needle head forms a groove with a similar fixed shape like a round point, and the surface roughness is improved; and then the surface of the needle head is coated with a heat-shrinkable film which has the heat-shrinkable characteristic and high temperature resistance and conforms to the biocompatibility, such as a PTFE (polytetrafluoroethylene) film, and the groove is coated by the heat-shrinkable film to form an air cavity.

During the application, because the supersound sound wave is the high resistance situation in the air cavity, consequently after the air cavity of supersound sound wave transmission syringe needle PTFE parcel, the ultrasonic wave can reflect back ultrasonic probe, shows for the strong echo, therefore the needle position can show the highlight state, and then improves the discernment degree of clinical needle point position.

Compared with the prior art, the utility model discloses a set up groove array on the syringe needle surface to cladding pyrocondensation membrane makes and forms the air cavity between pyrocondensation membrane and the groove array, can improve under the ultrasonic image guide, and the discernment degree of microwave ablation needle puncture in-process improves the rate of accuracy of clinical puncture, reduces because discernment is unclear leads to the situation of repeated needle insertion many times.

Drawings

Fig. 1 is a schematic structural view of a microwave ablation needle in embodiment 1;

the notation in the figure is:

1-needle tube, 2-needle head, 201-needle head rod part, 202-needle head tip part, 3-groove array, 4-heat shrinkage film and 5-coaxial cable.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1:

the microwave ablation needle capable of enhancing ultrasonic development as shown in fig. 1 comprises a needle tube 1 and a needle head 2 arranged at one end of the needle tube 1, wherein a groove array 3 is arranged on the surface of the needle head 2, a heat-shrinkable film 4 is coated on the surface of the needle head 2, and an air cavity is arranged between the heat-shrinkable film 4 and the groove array 3. The heat-shrinkable film 4 is a PTFE heat-shrinkable film.

Wherein, the inside of the needle tube 1 is provided with a coaxial cable 5. The needle tube 1 is made of S304 stainless steel material. The inner core of the coaxial cable 5 is a copper core, and the surface skin of the coaxial cable is wrapped by a polytetrafluoroethylene insulating layer and a copper skin.

The groove array 3 comprises a plurality of groove groups which are arranged on the surface of the needle head 2 in parallel along the axial direction. The groove group comprises a plurality of grooves which are uniformly arranged on the surface of the needle head 2 along the circumferential direction. The groove is hemispherical. The needle 2 is made of S304 stainless steel material, and the surface of the needle is laser-dotted to form a groove.

The needle 2 comprises a needle rod part 201 and a needle tip part 202, one end of the needle rod part 201 is connected with the needle tip part 202, the other end of the needle rod part 201 is connected with the needle tube 1, and the groove array 3 is arranged on the surface of the needle rod part 201.

The heat shrinkable film 4 covers the surface of the needle shaft 201 and part of the needle tip 202, covers the groove array 3, and exposes the tip of the needle tip 202.

When the microwave ablation needle is used, under the guidance of ultrasonic images, the microwave ablation needle skin is punctured into a tumor target area, after the position of the microwave ablation needle skin in tumor tissues is confirmed, a microwave ablation therapeutic apparatus is connected through a microwave connecting line, a cooling pipeline is connected with a water cooling circulation system, and microwave energy is injected into the tumor target tissues. During ablation, the molecules of the tumor target tissue rotate at high speed and are heated by friction, so that the tissue is coagulated, dehydrated and necrotic, and the purpose of treatment is achieved.

Example 2:

in this embodiment, the groove is columnar; the heat shrinkable film 4 is coated on the surface of the needle rod part 201 and covers the groove array 3. The rest is the same as example 1.

Example 3:

in this embodiment, the recess is tapered. The rest is the same as example 1.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a make microwave ablation needle of supersound development reinforcing, its characterized in that, this microwave ablation needle include needle tubing (1) and set up syringe needle (2) in needle tubing (1) one end, the surface of syringe needle (2) be equipped with groove array (3), the surface cladding of syringe needle (2) have pyrocondensation membrane (4), pyrocondensation membrane (4) and groove array (3) between be equipped with the air cavity.

2. The microwave ablation needle with enhanced ultrasonography according to claim 1, wherein the needle tube (1) is provided with a coaxial cable (5) inside.

3. The microwave ablation needle with enhanced sonography according to claim 1, wherein the groove array (3) comprises a plurality of groove sets axially juxtaposed on the surface of the needle head (2).

4. The microwave ablation needle with enhanced ultrasonic visualization according to claim 3, wherein the groove set comprises a plurality of grooves uniformly arranged on the surface of the needle head (2) along the circumferential direction.

5. A microwave ablation needle with enhanced ultrasound visualization according to claim 4, wherein the grooves are hemispherical.

6. A microwave ablation needle with enhanced sonography according to claim 4, wherein the groove is cylindrical.

7. A microwave ablation needle with enhanced sonography according to claim 4, wherein the recess is tapered.

8. The microwave ablation needle with enhanced ultrasonography according to claim 1, wherein the needle head (2) comprises a needle head shaft portion (201) and a needle head tip portion (202), one end of the needle head shaft portion (201) is connected to the needle head tip portion (202), the other end is connected to the needle tube (1), and the groove array (3) is disposed on the surface of the needle head shaft portion (201).

9. The microwave ablation needle with enhanced ultrasonic visualization according to claim 8, wherein the heat shrinkable film (4) is coated on the surface of the needle shaft (201) and covers the groove array (3).

10. The microwave ablation needle with enhanced ultrasonography according to claim 8, wherein the heat shrinkable film (4) covers the surface of the needle shaft (201) and a part of the needle tip (202) at the same time, and covers the groove array (3) while exposing the tip of the needle tip (202).