CN102652692A - Microwave ablation needle and connection method thereof - Google Patents

Abstract

The invention provides a microwave ablation needle and a connection method thereof. The microwave ablation needle comprises an ablation needle head, an ablation needle tubing and a handle, wherein a polytetrafluoroethylene insulator is arranged between the ablation needle head and one end of the ablation needle tubing; the other end of the ablation needle tubing is connected with the head of the handle; the handle comprises a main body and a base; the tail of the main body is provided with an insertion hole inserted into the base and a coaxial cable connector; the upper surface of the main body is a first plane and the lower surface of the main body is a first cambered surface; the base is provided with a metal interface; the upper surface of the base is a second plane and one side of the base is a second cambered surface; and when the main body is inserted into the base, the first plane and first cambered surface of the main body respectively correspond to the second plane and second cambered surface of the base, and the coaxial cable connector is fastened with the metal interface. The method comprises the following steps: ensuring the first plane and first cambered surface of the main body to respectively correspond to the second plane and second cambered surface of the base; and inserting the insertion hole of the main body into the base and fastening the coaxial cable connector with the metal interface. The microwave ablation needle can be convenient to connect and remove.

Description

Microwave ablation needle and connecting method thereof

Technical Field

The invention relates to a microwave ablation needle and a connecting method thereof, in particular to a microwave ablation needle which is convenient to connect and disassemble.

Background

With the development of medical imaging technology, under the guidance of images, the microwave ablation therapy of tumors is a new method for tumor therapy, which is to insert a microwave therapy needle into the tumor tissue of a human body under the guidance of B-ultrasonic images or CT images to perform thermal ablation therapy on the tumors. The microwave ablation therapy is a high-efficiency, rapid and uniform heating method for tumor tissues, thorough thermal coagulation, convenient use and safety, and has been widely applied to clinic for many years.

At present, the existing connection mode of the tumor microwave ablation needle and a microwave cable on the market is mostly connected in an integrated mode, the connection mode cannot be detached, the operation process is complicated and inconvenient, particularly, the operation performed under CT equipment is not beneficial to use and operation of doctors, and the tail connector of the handle of the microwave ablation needle is large, so that the handle of the microwave ablation needle is heavy and not light.

In view of this, how to design a microwave ablation needle, which can be conveniently connected and detached, is a problem that needs to be solved by those in the industry.

Disclosure of Invention

Aiming at the defects that the microwave ablation needle is inconvenient to accurately position the puncture depth and errors are easy to cause in the prior art, the invention provides the microwave ablation needle and the connection method thereof.

According to one aspect of the invention, a microwave ablation needle is provided, which comprises an ablation needle head, an ablation needle tube and a handle, wherein a tetrafluoro insulator is arranged between the ablation needle head and one end of the ablation needle tube, and the other end of the ablation needle tube is connected with the head of the handle, and the microwave ablation needle is characterized in that the handle comprises a main body and a base, the tail of the main body is provided with a socket inserted into the base and a coaxial cable connector, the upper surface of the main body is a first plane, the lower surface of the main body is a first cambered surface, the base is provided with a metal interface, the upper surface of the base is a second plane, and one side surface of the base is a second cambered surface,

when the main body is inserted into the base, the first plane and the first cambered surface of the main body respectively correspond to the second plane and the second cambered surface of the base, and the coaxial cable connector is clamped on the metal interface.

Preferably, the main body of the handle forms an angle with the base.

Preferably, the included angle ranges from 90 ° to 150 °.

Preferably, the included angle is 90 °.

Preferably, the handle is made of synthetic plastics of acrylonitrile, butadiene and styrene.

Preferably, the length of the socket of the main body is 3-5 mm.

According to another aspect of the present invention, there is provided a method of attaching a microwave ablation needle, comprising the steps of:

respectively corresponding the first plane and the first cambered surface of the main body to the second plane and the second cambered surface of the base; and

inserting the socket of the main body into the base, and clamping the coaxial cable connector with the metal interface.

The invention has the advantages that: the first plane and the first cambered surface on the main body of the handle are correspondingly inserted with the second plane and the second cambered surface on the base of the handle, so that the handle can be connected more conveniently.

Drawings

The various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,

FIG. 1 shows a schematic structural view of a microwave ablation needle in accordance with an aspect of the present invention.

Fig. 2 shows a top view of the body of the handle of fig. 1.

Fig. 3 shows a side view of the base of the handle of fig. 1.

Fig. 4 illustrates a flow chart of a method of attaching a microwave ablation needle in accordance with another aspect of the present invention.

The specific implementation mode is as follows:

embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 shows a schematic structural view of a microwave ablation needle in accordance with an aspect of the present invention. Referring to fig. 1, the microwave ablation needle comprises anablation needle head 10, anablation needle tube 11 and ahandle 12. Wherein, theablation needle tube 10 is connected with theablation needle tube 11, atetrafluoro insulator 13 is arranged between one end of theablation needle tube 11 and theablation needle tube 10, and the other end of theablation needle tube 11 is connected with the head of thehandle 12. Thehandle 12 includes abody 14 and abase 15.

Fig. 2 shows a top view of the body of the handle of fig. 1. Referring to fig. 2, the rear portion of themain body 14 has asocket 141 into which thebase 15 is inserted and acoaxial cable connector 142. With continued reference to fig. 1, the upper surface of thebody 14 is afirst plane 143 and the lower surface is afirst arc 144.

Fig. 3 shows a side view of the base of the handle of fig. 1. Referring to fig. 3, thebase 15 has ametal interface 151. With continued reference to fig. 1, the upper surface of thebase 15 is asecond plane 152 and a side surface is asecond arc surface 153.

When themain body 14 is inserted into thebase 15, thefirst plane 143 and thefirst arc surface 144 of themain body 14 correspond to thesecond plane 152 and thesecond arc surface 153 of thebase 15, respectively, and meanwhile, thecoaxial cable connector 142 in the main body is just engaged with themetal interface 151. Thehandle 12 may be made of synthetic plastics such as acrylonitrile, butadiene, and styrene. In addition, themain body 14 of thehandle 12 forms an angle α with thebase 15, specifically, the angle α ranges from 90 ° to 150 °, and more specifically, the angle α is 90 °. With thehandle 12 angled in this manner, the medical professional will feel more comfortable with his or her hand during the procedure. In this embodiment, the length of the insertion opening 141 of themain body 14 is 3 to 5 mm. Because thehandle 12 is inserted into thebase 15 through themain body 14, the handle can be conveniently detached.

Fig. 3 illustrates a flow chart of a method of attaching a microwave ablation needle in accordance with another aspect of the present invention. Referring to fig. 3 in combination with fig. 1 and 2, the method for accurately positioning the penetration depth of the microwave ablation needle comprises the following steps:

step S1: the first plane and the first cambered surface of the main body are respectively corresponding to the second plane and the second cambered surface of the base. First, thefirst plane 143 of thebody 14 corresponds to thesecond plane 152 of thebase 15, and thefirst arc surface 144 of thebody 14 corresponds to thesecond arc surface 153 of thebase 15.

Step S2: the socket of the main body is inserted into the base, and the coaxial cable connector is clamped with the metal interface. Then, thesocket 141 of themain body 14 is inserted into thebase 15, and the length of thesocket 141 is 3 to 5mm, and at this time, thecoaxial cable connector 142 is just engaged with themetal mouthpiece 151, and a slight metal click sound is generated. The microwave ablation needle is connected in such a way, so that the microwave ablation needle is very convenient and is convenient to detach.

The invention has the advantages that: the first plane and the first cambered surface on the main body of the handle are correspondingly inserted with the second plane and the second cambered surface on the base of the handle, so that the handle can be connected more conveniently.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A microwave ablation needle comprises an ablation needle head, an ablation needle tube and a handle, wherein a tetrafluoro insulator is arranged between the ablation needle head and one end of the ablation needle tube, the other end of the ablation needle tube is connected with the head of the handle, the microwave ablation needle is characterized in that the handle comprises a main body and a base, the tail of the main body is provided with a socket and a coaxial cable connector which are inserted into the base, the upper surface of the main body is a first plane, the lower surface of the main body is a first cambered surface, the base is provided with a metal interface, the upper surface of the base is a second plane, and one side surface of the base is a second cambered surface,

when the main body is inserted into the base, the first plane and the first cambered surface of the main body respectively correspond to the second plane and the second cambered surface of the base, and the coaxial cable connector is clamped on the metal interface.

2. A microwave ablation needle according to claim 1 wherein the body of the handle forms an angle with the base.

3. A microwave ablation needle according to claim 2 wherein the included angle is in the range 90 ° to 150 °.

4. A microwave ablation needle according to claim 3 wherein the included angle is 90 °.

5. A microwave ablation needle according to claim 1 wherein the handle is made of a synthetic plastic of acrylonitrile, butadiene and styrene.

6. A microwave ablation needle according to claim 1 wherein the socket of the body is 3 to 5mm in length.

7. A method of attaching a microwave ablation needle according to any one of claims 1 to 6, comprising the steps of:

respectively corresponding the first plane and the first cambered surface of the main body to the second plane and the second cambered surface of the base; and

inserting the socket of the main body into the base, and clamping the coaxial cable connector with the metal interface.

Images