Ablation needle

Abstract

The ablation needle at least comprises a needle tube, a first cavity and a second cavity which are independent of each other are arranged in the needle tube, a first pipeline is arranged in the first cavity, a second pipeline is arranged in the second cavity, and the first pipeline and the second pipeline extend to the outside of the needle tube from the near end of the needle tube; the near end of the needle body is connected with the far end of the needle tube, a hollow pipeline is arranged in the needle body, a first channel is formed between the needle body and the pipeline, a second channel is arranged in the pipeline, the far end of the first channel is communicated with the far end of the second channel, the near end of the first channel is communicated with the first cavity, and the far end of the second channel is communicated with the second cavity. The near end of the second channel is communicated with the second cavity, and a water outlet hole is formed in the needle body; the needle head is connected to the far end of the needle body. According to the utility model, two channels are arranged, one channel is used for injecting one kind of liquid, and the other channel is used for injecting the other kind of liquid or sucking gas generated in the ablation treatment process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an ablation needle. Background Art

[0002] The ablation needle is a key component in the radiofrequency ablation treatment system and plays a vital role in the effectiveness of radiofrequency ablation treatment.

[0003] Patent publication number CN111481290A discloses a dual-waterway ablation electrode needle, including a needle body, which includes a needle head, a cooling water inlet pipe, a cooling water outlet pipe and a water injection pipe. The cooling water inlet pipe, cooling water outlet pipe and water injection pipe are sequentially arranged from the inside to the outside.

[0004] The cooling water inlet and outlet pipes supply circulating water to cool the needle, while the water injection pipe can inject therapeutic fluids or aspirate gases generated during ablation. However, because the water injection pipe only has a single channel, it cannot simultaneously inject two fluids or simultaneously aspirate gases, which sometimes fails to meet medical requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an ablation needle which can provide dual channels, one channel for injecting one liquid, and the other channel for injecting another liquid or aspirating gas generated during ablation treatment.

[0006] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0007] An ablation needle, characterized by at least comprising:

[0008] A needle tube, wherein a first cavity and a second cavity are provided in the needle tube, each of which is independent of the other. A first pipeline is provided in the first cavity, and a second pipeline is provided in the second cavity. The first pipeline and the second pipeline extend from the proximal end of the needle tube to the outside of the needle tube;

[0009] A needle body, the proximal end of the needle body is connected to the distal end of the needle tube, a hollow pipe is provided in the needle body, a first channel is formed between the needle body and the pipe, a second channel is provided in the pipe, the distal end of the first channel is connected to the distal end of the second channel, the proximal end of the first channel is connected to the first cavity, the proximal end of the second channel is connected to the second cavity, and a water outlet is provided on the needle body; a needle head, the needle head is connected to the distal end of the needle body.

[0010] In a preferred embodiment, a fixing piece is fixedly provided in the needle tube, and the first pipeline and the second pipeline are fixedly connected to the fixing piece.

[0011] In a preferred embodiment, the distal end of the fixing member is connected to a second cavity shell, a second cavity is formed between the second cavity shell and the fixing member, and the second pipeline extends from the second cavity through the fixing member to the outside of the needle tube.

[0012] In a preferred embodiment, the distal end of the second cavity shell is connected to the first cavity shell, a first cavity is formed between the first cavity shell and the second cavity shell, and the first pipeline extends from the first cavity through the second cavity shell and the fixing member in sequence to the outside of the needle tube.

[0013] In a preferred embodiment, a temperature measuring portion is provided in the needle.

[0014] In a preferred embodiment, an insulating member is provided on the outer cover of the needle body at a portion where no water outlet hole is provided.

[0015] In a preferred embodiment, a temperature measuring element is provided in the needle body, and the proximal end of the temperature measuring element extends into the needle tube and is connected to an external circuit.

[0016] In a preferred embodiment, the temperature measuring element is a thermocouple.

[0017] Compared with the prior art, the ablation needle of this embodiment has the following beneficial effects:

[0018] 1) The first liquid can be injected into the second channel through the second pipeline to cool the needle body during the ablation treatment process and control the needle body temperature;

[0019] 2) A second liquid can be injected into the first channel through the first pipeline. After the two liquids are combined through the connected first and second channels, they are discharged through the water injection hole provided on the needle body, meeting the medical needs of users who need to inject two liquids at the same time;

[0020] 3) The first channel can also be used to aspirate the gas generated during ablation treatment, meeting the user's need to aspirate gas while injecting liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the cross-sectional structure of the ablation needle in this embodiment;

[0022] Figure 2 This is the ablation needle of this embodiment Figure 1 A partial enlarged structural diagram of part B is shown;

[0023] Figure 3 This is the ablation needle of this embodiment Figure 1 The diagram shows a partial enlarged structural diagram of part A.

[0024] Explanation of the accompanying drawings: 10-needle tube, 11-first cavity, 12-second cavity, 13-first pipeline, 14-second pipeline, 15-fixing part, 16-second cavity shell, 17-first cavity shell, 20-needle body, 21-pipeline, 22-water outlet, 23-insulating part, 24-first channel, 25-second channel, 30-needle head, 31-temperature measuring part, 40-temperature measuring element. DETAILED DESCRIPTION

[0025] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In this embodiment, the end of the ablation needle facing the patient is defined as the distal end, and the end facing the user is defined as the proximal end.

[0028] like Figure 1 and Figure 2 As shown, the ablation needle of this embodiment includes a needle tube 10 , in which a fixing member 15 is fixedly disposed, and a first pipeline 13 and a second pipeline 14 are fixedly connected to the fixing member 15 .

[0029] The distal end of the fixing member 15 is connected to a second cavity shell 16 , and a second cavity 12 is formed between the second cavity shell 16 and the fixing member 15 . The second pipeline 14 extends from the second cavity 12 through the fixing member 15 to the outside of the needle tube 10 .

[0030] The distal end of the second cavity shell 16 is connected to the first cavity shell 17 , and a first cavity 11 is formed between the first cavity shell 17 and the second cavity shell 16 . The first pipeline 13 extends from the first cavity 11 through the second cavity shell 16 and the fixing member 15 in sequence to the outside of the needle tube 10 .

[0031] like Figure 1 and Figure 3As shown, the distal end of the needle tube 10 is connected to a needle body 20, a hollow pipe 21 is provided in the needle body 20, a first channel 24 is formed between the needle body 20 and the pipe 21, a second channel 25 is provided in the pipe 21, the distal end of the first channel 24 is connected to the distal end of the second channel 25, and a plurality of water outlet holes 22 are provided on the needle body 20.

[0032] like Figure 2 and Figure 3 As shown, the proximal end of the second channel 25 is connected to the second cavity 12. During use, an external injection pump or a peristaltic pump included with the ablation device is connected to the second conduit 14 to inject a first liquid into the second channel 25. The first liquid is discharged through the water outlet 22 on the needle body 20 to cool the needle body 20 and control its temperature. In this embodiment, the first liquid is preferably physiological saline, which not only meets the treatment requirements but also has a cooling effect, increases conductivity, and expands the ablation range.

[0033] like Figure 2 and Figure 3 As shown, the proximal end of the first channel 24 is connected to the first cavity 11, and a second liquid, such as a therapeutic drug required during ablation treatment, can be injected into the first channel 24 through the first pipeline 13. The second liquid and the first liquid are merged in the needle body 20 through the connected first channel 24 and second channel 25 and then discharged through the water outlet 22, thereby meeting the medical needs of the user to inject two liquids at the same time.

[0034] The first channel 24 can also be used to aspirate gas generated during the ablation treatment process, meeting the user's need to aspirate gas while injecting liquid.

[0035] like Figure 3 As shown, the distal end of needle body 20 is connected to a needle tip 30, which houses a temperature measuring unit 31. Temperature measuring unit 31 monitors the surface temperature of needle body 20 in real time and provides external feedback. This information is then used to adjust the injection rate of the first liquid via an external syringe pump connected to second conduit 14 or the peristaltic pump within the ablation device, thereby controlling the surface temperature of needle body 20 and ensuring effective ablation. Temperature measuring unit 31 is located within needle tip 30, unaffected by the injected water flow, enabling more accurate temperature measurement.

[0036] like Figure 2 and Figure 3 As shown, a temperature measuring element 40 is further provided in the needle body 20. The proximal end of the temperature measuring element 40 extends into the needle tube 10 and is connected to an external circuit. The temperature measuring element 40 of this embodiment is preferably a thermocouple.

[0037] like Figure 2 As shown, the needle body 20 is further provided with an insulating member 23 outside the portion where the water outlet 22 is not provided, so as to better ensure the safety of the user.

[0038] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

Claims

1. An ablation needle, characterized in that: At least: A needle tube (10), wherein a first cavity (11) and a second cavity (12) independent of each other are provided in the needle tube (10), a first pipeline (13) is provided in the first cavity (11), and a second pipeline (14) is provided in the second cavity (12), and the first pipeline (13) and the second pipeline (14) extend from the proximal end of the needle tube (10) to the outside of the needle tube (10); A needle body (20), wherein the proximal end of the needle body (20) is connected to the distal end of the needle tube (10), a hollow pipe (21) is provided in the needle body (20), a first channel (24) is formed between the needle body (20) and the pipe (21), a second channel (25) is provided in the pipe (21), the distal end of the first channel (24) is communicated with the distal end of the second channel (25), the proximal end of the first channel (24) is communicated with the first cavity (11), the proximal end of the second channel (25) is communicated with the second cavity (12), and a water outlet hole (22) is provided on the needle body (20); A needle (30) is connected to the distal end of the needle body (20).

2. The ablation needle according to claim 1, characterized in that: A fixing piece (15) is fixedly arranged inside the needle tube (10), and the first pipeline (13) and the second pipeline (14) are fixedly connected to the fixing piece (15).

3. The ablation needle according to claim 2, characterized in that: The distal end of the fixing member (15) is connected to a second cavity shell (16), a second cavity (12) is formed between the second cavity shell (16) and the fixing member (15), and the second pipeline (14) extends from the second cavity (12) through the fixing member (15) to the outside of the needle tube (10).

4. The ablation needle according to claim 3, characterized in that: The distal end of the second cavity shell (16) is connected to the first cavity shell (17), and a first cavity (11) is formed between the first cavity shell (17) and the second cavity shell (16). The first pipeline (13) extends from the first cavity (11) through the second cavity shell (16) and the fixing member (15) in sequence to the outside of the needle tube (10).

5. The ablation needle according to any one of claims 1 to 4, characterized in that: A temperature measuring portion (31) is provided inside the needle (30).

6. The ablation needle according to claim 5, characterized in that: The needle body (20) is provided with an insulating member (23) on the outer cover at a portion where the water outlet hole (22) is not provided.

7. The ablation needle according to claim 1, characterized in that: A temperature measuring element (40) is provided in the needle body (20), and the proximal end of the temperature measuring element (40) extends into the needle tube (10) and is connected to an external circuit.

8. The ablation needle according to claim 7, characterized in that: The temperature measuring element (40) is a thermocouple.

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