CN210301201U

CN210301201U - Radio frequency ablation needle

Info

Publication number: CN210301201U
Application number: CN201920773267.2U
Authority: CN
Inventors: 蒋微
Original assignee: Shanghai Shenzan Science And Trade Co Ltd
Current assignee: Shanghai Shenzan Science And Trade Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-04-14
Anticipated expiration: 2029-05-27

Abstract

The utility model discloses a radio frequency ablation needle, including the pjncture needle, the inside hollow portion embedding of pjncture needle has cavity radio frequency needle, and the pjncture needle is including the puncture needle head and the pjncture needle body that are used for the puncture tissue, and the external surface spraying of pjncture needle has the insulating layer, and the inside drainage channel that is provided with of lateral wall of puncture needle body, and the pjncture needle body is close to and is provided with a plurality of drainage mouths that communicate with drainage channel on the lateral wall of puncture needle head one end, and the pjncture needle body is kept away from and is provided with the aspirator connector. The radiofrequency ablation needle adopts a split design, is convenient to combine and use, and can suck out surrounding tissue fluid in the operation process.

Description

Radio frequency ablation needle

Technical Field

The utility model relates to the field of medical equipment, concretely relates to radio frequency ablation needle.

Background

The radio frequency ablation is a mature treatment mode developed in the existing minimally invasive treatment, a radio frequency needle is positioned and guided to be directly inserted into a focus by means of an image technology such as ultrasound or CT (computed tomography), local tissues of the focus generate high temperature through radio frequency energy, and soft tissues and tumors are solidified and inactivated finally after drying. Radiofrequency ablation has the following advantages: minimally invasive, maximally preserving the function of a target organ; the complications are few, the recovery is fast, and the patients are easy to accept; the curative effect is definite, and the treatment can be repeated; the indications are wide; simple operation, reliable positioning and temperature control, etc.

However, the existing radio frequency ablation needle is usually arranged integrally, and when a certain part is worn or damaged, the whole radio frequency ablation needle needs to be replaced, so that the waste of medical equipment is caused; in addition, in the actual operation process, tissue fluid usually exists in the tumor, and during the process of inserting the radio frequency ablation needle into the tumor and heating inactivation, the tissue fluid flows out along the puncture needle, and at this time, the radio frequency ablation needle needs to be withdrawn and other surgical tools are used for sucking out the tissue fluid, so that the operation is affected, and huge trauma and pain are caused to a patient.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem existing in the background technology, the utility model aims to provide a radio frequency ablation needle, it adopts split type design, conveniently makes up the use to can be to tissue liquid suction on every side at the operation in-process, the temperature of radio frequency needle when using can also be accurately controlled simultaneously, effectively prevents the carbomorphism of thermosetting tissue.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a radio frequency ablation needle, which comprises a puncture needle, wherein a hollow radio frequency needle is embedded in the hollow part inside the puncture needle, the puncture needle comprises a puncture needle head and a puncture needle body, the outer surface of the puncture needle body is coated with an insulating layer, a drainage channel is arranged inside the side wall of the puncture needle body, the puncture needle body is close to the outer side wall of one end of the puncture needle head and is provided with a plurality of drainage ports communicated with the drainage channel, and the outer side wall of one end of the puncture needle body, which is far away from the puncture needle head, is provided with an aspirator connector communicated with the drainage channel;

the cavity radio frequency needle includes integrated into one piece's active conductive needle head and radio frequency needle body, outside the active conductive needle head stretches out the puncture syringe needle, the radio frequency needle body was kept away from the one end of active conductive needle head is connected with first connecting piece, the inside internal thread that is equipped with of first connecting piece, the inside activity of cavity radio frequency needle is inlayed and is equipped with the cooling needle, the external diameter of cooling needle slightly is less than the internal diameter of cavity radio frequency needle, cooling needle one end is connected with the second connecting piece, be equipped with on the second connecting piece with the inside internal thread matched with external screw thread of first connecting piece.

The further improvement is that a temperature sensor and a radio frequency conducting wire are arranged in the active conductive needle head, and the conducting wire of the temperature sensor and the radio frequency conducting wire sequentially penetrate through the radio frequency needle body and the first connecting piece to be respectively connected with a control part and a radio frequency generating part of the radio frequency therapeutic apparatus. When in use, the radio frequency generating component is started, the radio frequency electromagnetic wave generated by the radio frequency therapeutic apparatus is conducted to the lesion tissue through the active conductive needle head of the hollow radio frequency needle, so that the lesion tissue generates an internal heat effect, protein is thermally coagulated, dehydrated and atrophied, and finally necrosis and desquamation are realized, thereby achieving the therapeutic purpose; through setting up temperature sensor, through control unit real time monitoring and regulation and control pathological change tissue department heating temperature at effective range, avoid the high temperature to lead to pathological change tissue carbomorphism or the temperature is low can't be with tissue thermosetting processing excessively.

The improved structure is characterized in that the cooling needle is of a hollow structure, an inner-layer water circulation pipeline and an outer-layer water circulation pipeline are arranged in the hollow structure, a water inlet is connected to the inner-layer water circulation pipeline, and a water outlet is connected to the outer-layer water circulation pipeline. Through the inside hydrologic cycle pipeline of cooling needle and the active conductive needle head of cavity radio frequency needle carry out the heat exchange, in time quick cool down active conductive needle head, guarantee that its temperature is in effective range in the use to effectively prevent the tissue carbomorphism.

In a further improvement, the puncture needle head and the puncture needle body are integrally formed, and the outer diameter of the active conductive needle head is equal to the inner diameter of the puncture needle head. Through setting up, stabilize the cavity radio frequency needle and carry out the tissue puncture in pjncture needle inside.

The further improvement is that the puncture needle body is provided with scale marks, and the distance between the adjacent scale marks is 1 mm. The depth of the puncture into the focus can be visually displayed, and the operator can conveniently use the puncture needle to puncture accurately.

The puncture needle is further improved in that the needle tip of the puncture needle body is a single-bevel needle tip or a multi-bevel needle tip, and the puncture needle body is cylindrical. The puncture needle head is arranged in a needle point shape, so that the puncture resistance is small, and the puncture is easy.

Compared with the prior art, the utility model discloses following beneficial effect has:

in the utility model, the hollow radio frequency needle is firmly fixed in the hollow part of the puncture needle for tissue puncture, and the puncture needle with smaller puncture resistance is used for driving the blunt hollow radio frequency needle to be rapidly and accurately inserted into a focus, thereby relieving the pain of a patient; by arranging the drainage channel in the puncture needle and arranging the drainage port on the outer side wall of the puncture needle body, peripheral tissue fluid can be quickly and conveniently sucked out in the operation process, and the efficiency is improved; the cooling needle penetrates through the internal thread inside the first connecting piece to be embedded into the hollow radio frequency needle, and the internal thread inside the first connecting piece is matched with the external thread on the second connecting piece, so that the cooling needle and the hollow radio frequency needle can be quickly and conveniently detachably mounted, and are convenient to maintain and replace; in addition, through set up temperature sensor in the active conductive needle head of cavity radio frequency needle to at the inside water circulating pipe that sets up of cooling needle, real time monitoring and regulation and control pathological change tissue department heating temperature are in effective range, thereby effectively prevent the tissue carbomorphism.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is an internal structural view of the puncture needle of the present invention;

FIG. 2 is a cross-sectional view of the piercing needle body of FIG. 1;

FIG. 3 is a schematic view of the hollow RF needle of the present invention;

FIG. 4 is a view showing the internal structure of the hollow RF needle of the present invention;

FIG. 5 is a view of the structure of the cooling pin of the present invention;

FIG. 6 is an internal structural view of the cooling pin of the present invention;

wherein the specific reference numerals are as follows: the puncture needle comprises a puncture needle 1, a puncture needle head 2, a puncture needle body 3, a drainage channel 4, a drainage port 5, an aspirator connector 6, a hollow radio frequency needle 7, an active conductive needle head 8, a radio frequency needle body 9, a temperature sensor 10, a radio frequency wire 11, a first connecting piece 12, an internal thread 13, a cooling needle 14, a second connecting piece 15, an external thread 16, an inner-layer water circulation pipeline 17, a water inlet 18, an outer-layer water circulation pipeline 19 and a water outlet 20.

Detailed Description

The embodiment of the utility model discloses a radio frequency ablation needle, as shown in fig. 1 and fig. 2, comprising a puncture needle 1, wherein a hollow radio frequency needle 7 is embedded in the hollow part of the puncture needle 1, the puncture needle 1 comprises a puncture needle head 2 for puncturing tissues and a puncture needle body 3, and an insulating layer is sprayed on the outer surface of the puncture needle body 3; the puncture needle head 2 and the puncture needle body 3 are integrally formed, the outer diameter of the active conductive needle head 8 is equal to the inner diameter of the puncture needle head 2, so that the hollow radio frequency needle 7 is conveniently and stably fixed in the puncture needle 1 for tissue puncture, and the length and the diameter of the puncture needle head 2 can be selected according to the size and the depth of a focus tissue; the shape of the needle point of the puncture needle head 2 is preferably a single-bevel needle point or a multi-bevel needle point, the puncture needle body 3 is cylindrical, and the needle point shape of the puncture needle head 2 is set, so that the puncture resistance is small, and the puncture is easy; the puncture needle body 3 is provided with scale marks, the distance between adjacent scale marks is 1mm, the depth of the punctured focus can be visually displayed, and an operator can conveniently use the puncture needle body to puncture accurately. Puncture needle body 3's the inside drainage channel 4 that is provided with of lateral wall, puncture needle body 3 is close to and is provided with a plurality of drainage mouths 5 that communicate with drainage channel 4 on the lateral wall of 2 one ends of puncture needle, puncture needle body 3 is kept away from and is provided with aspirator connector 6 that is linked together with drainage channel 4 on the lateral wall of 2 one ends of puncture needle, in the operation process, be connected if the tissue liquid is too much with aspirator connector 6, the tissue liquid enters into drainage channel 4 through drainage mouth 5, again by the aspirator suction.

As shown in fig. 3 and 4, the hollow rf needle 7 includes an active conductive needle 8 and an rf needle body 9 which are integrally formed, the active conductive needle 8 extends out of the puncture needle 2, the front end of the active conductive needle 8 is smooth, the contact area between the active conductive needle and the tissue at the focus can be increased, and the thermal coagulation ablation efficiency can be improved. One end of the radio frequency needle body 9, which is far away from the active conductive needle 8, is connected with a first connecting piece 12, an internal thread 13 is arranged inside the first connecting piece 12, a temperature sensor 10 and a radio frequency wire 11 are arranged in the active conductive needle 8, and the wire of the temperature sensor 10 and the radio frequency wire 11 sequentially penetrate through the radio frequency needle body 9 and the first connecting piece 12 to be connected with a control part and a radio frequency generation part of the radio frequency therapeutic apparatus respectively. When the device is used, the radio frequency generating component is started, radio frequency electromagnetic waves generated by the radio frequency therapeutic apparatus are conducted to a diseased tissue through the active conductive needle head 8 of the hollow radio frequency needle 7, so that the diseased tissue generates an internal heat effect, protein is thermally coagulated, dehydrated and atrophied, and finally necrosis and shedding are achieved, the therapeutic purpose is achieved, and the temperature sensor 10 is arranged, the heating temperature of the diseased tissue is monitored and regulated in real time through the control component to be within an effective range, and the condition that the diseased tissue is carbonized due to overhigh temperature or the tissue cannot be thermally coagulated due to overlow temperature is avoided. As shown in fig. 5 and 6, a cooling needle 14 is movably embedded in the hollow rf needle 7, an outer diameter of the cooling needle 14 is slightly smaller than an inner diameter of the hollow rf needle 7, a second connecting member 15 is connected to one end of the cooling needle 14, an external thread 16 matched with the internal thread 13 in the first connecting member 12 is arranged on the second connecting member 15, and one end of the cooling needle 14, which is far away from the second connecting member 15, extends out of the active conductive needle 8. During the use, cooling needle 14 passes inside internal thread 13 embedding to hollow radio frequency needle 7 inside of first connecting piece 12, and through the internal thread 13 of first connecting piece 12 and the cooperation of external screw thread 16 on the second connecting piece 15, realized cooling needle 14 and hollow radio frequency needle 7's quick convenient demountable installation, be convenient for maintain and change. The cooling needle 14 is of a hollow structure, an inner-layer water circulation pipeline and an outer-layer water circulation pipeline are arranged in the hollow structure, a water inlet 18 is connected to the inner-layer water circulation pipeline 17, and a water outlet 20 is connected to the outer-layer water circulation pipeline 19. Through the inside water circulating pipe of cooling needle 14 and the active conductive needle head 8 of cavity radio frequency needle 7 carry out the heat exchange, in time quick cool down active conductive needle head 8, guarantee that its temperature is in effective range in the use to effectively prevent the tissue carbomorphism.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. A radio frequency ablation needle is characterized by comprising a puncture needle, wherein a hollow radio frequency needle is embedded in a hollow part in the puncture needle, the puncture needle comprises a puncture needle head and a puncture needle body, the puncture needle head is used for puncturing tissues, an insulating layer is sprayed on the outer surface of the puncture needle body, a drainage channel is arranged in the side wall of the puncture needle body, a plurality of drainage ports communicated with the drainage channel are formed in the outer side wall of one end, close to the puncture needle head, of the puncture needle body, and an aspirator connector communicated with the drainage channel is arranged on the outer side wall of one end, far away from the puncture needle head, of the puncture needle body;

2. The radiofrequency ablation needle of claim 1, wherein a temperature sensor and a radiofrequency wire are disposed in the active conductive needle head, and the temperature sensor wire and the radiofrequency wire sequentially penetrate through the radiofrequency needle body and the first connecting piece to be connected with the control part and the radiofrequency generation part of the radiofrequency treatment device respectively.

3. The radiofrequency ablation needle of claim 1, wherein the cooling needle is a hollow structure, an inner water circulation pipeline and an outer water circulation pipeline are arranged in the hollow structure, a water inlet is connected to the inner water circulation pipeline, and a water outlet is connected to the outer water circulation pipeline.

4. The rf ablation needle of claim 1, wherein the needle tip and the needle body are integrally formed, and the active conductive tip has an outer diameter equal to an inner diameter of the needle tip.

5. The radiofrequency ablation needle of claim 1, wherein the puncture needle body is provided with graduation marks, and the distance between adjacent graduation marks is 1 mm.

6. The radio frequency ablation needle according to claim 1, wherein the puncture needle tip is in the shape of a single bevel needle tip or a multi-bevel needle tip, and the puncture needle body is cylindrical.