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CN-122005065-A - Multipolar water-cooling radio frequency ablation needle

CN122005065ACN 122005065 ACN122005065 ACN 122005065ACN-122005065-A

Abstract

The invention discloses a multipolar water-cooling radio frequency ablation needle, and relates to the technical field of medical appliances. The needle comprises a needle body, a handle, an insulating coating, power wires and a power connector, wherein two ends of the needle body are respectively provided with a tip and a tail end, two electrodes, namely a positive electrode and a negative electrode, are axially arranged on the needle body, the needle body is hollow, the handle is arranged at the tail end of the needle body, the insulating coating is arranged on the surface of the needle body and positioned between the positive electrode and the negative electrode, the power wires are arranged in the needle body, the first ends of the two power wires are respectively connected with the positive electrode and the negative electrode, and the second ends of the two power wires penetrate through the handle and are connected with the power connector. According to the invention, the plurality of electrodes are arranged on the needle body, current can flow between adjacent currents on the needle body, a negative plate is not required to be used, the risk of damage to a patient is reduced, meanwhile, the energy is concentrated, the local heat production efficiency is higher, the heat diffusion range is controllable, and the small focus or the fine part can be precisely ablated.

Inventors

  • LI YANG

Assignees

  • 江苏铭盛医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20260408

Claims (6)

  1. 1. A multipolar water-cooled radio frequency ablation needle comprising: the needle comprises a needle body (1), wherein the two ends of the needle body (1) are respectively a tip and a tail end, two electrodes, namely a positive electrode (2) and a negative electrode (3), are axially arranged on the needle body (1), and the needle body (1) is hollow; The handle (4) is arranged at the tail end of the needle body (1); An insulating coating (5), the insulating coating (5) being provided on the surface of the needle body (1), the insulating coating (5) being located between the positive electrode (2) and the negative electrode (3); The power cord is arranged in the needle body (1), two power cords are arranged, first ends of the two power cords are respectively connected with the positive electrode (2) and the negative electrode (3), and second ends of the two power cords penetrate through the handle (4) and are connected with the power connector (10).
  2. 2. The multipolar water-cooling radio frequency ablation needle according to claim 1, characterized in that a partition plate (6) is arranged in the needle body (1), the partition plate (6) divides the interior of the needle body (1) into a water inlet cavity and a water outlet cavity, one end of the partition plate (6) away from the handle (4) is provided with a circulation hole for communicating the water inlet cavity with the water outlet cavity, the handle (4) is provided with a water inlet pipe (7) and a water outlet pipe (8), a first end of the water inlet pipe (7) is communicated with the water inlet cavity, a second end of the water outlet pipe (8) is connected with a water tank, a first end of the water outlet pipe (8) is communicated with the water outlet cavity, a second end of the water pipe is communicated with the water tank, and a water pump is arranged in the water tank.
  3. 3. The multipolar water-cooling radio frequency ablation needle according to claim 2, wherein the needle body (1) is further provided with an X-ray indication ring (9), the X-ray indication ring (9) is sleeved on the needle body (1), and the X-ray indication ring (9) is made of a metal material with a density greater than that of the needle body (1).
  4. 4. A multipolar water-cooled radiofrequency ablation needle as claimed in claim 1, characterized in that a temperature sensor (12) is provided in the needle body (1) at the end near the tip.
  5. 5. The multipolar water-cooling radio frequency ablation needle according to claim 1, wherein an insulation support tube (11) is arranged on the handle (4), the tail end of the needle body (1) is sleeved in the insulation support tube (11), and the electrode is positioned outside the insulation support tube (11).
  6. 6. A multipolar water-cooled radiofrequency ablation needle as claimed in any one of claims 1 to 5, characterized in that said electrodes are arranged at intervals along the axial direction of said needle body (1), adjacent two of said electrodes being of different polarity, and an insulating coating (5) being provided between each adjacent two of said electrodes.

Description

Multipolar water-cooling radio frequency ablation needle Technical Field The invention relates to the technical field of medical instruments, in particular to a multipolar water-cooling radio frequency ablation needle. Background The radio frequency ablation treatment is to form a closed loop by high-frequency alternating current to realize targeted treatment, when in treatment, after an ablation needle (positive electrode) is penetrated into a focus, joule heat (the local temperature can reach 60-100 ℃) is generated by resistance when the current flows through human tissues, so that cell coagulation necrosis is caused, and then the current returns to a radio frequency generator through a negative electrode plate (negative electrode) attached to the body surface to complete the loop. During treatment, the ablation needle intensively releases energy through the tip, and the negative plate disperses current density through a large contact area (usually more than or equal to 100 cm < 2 >) so as to avoid skin burn. However, when the negative plate is used, the position of the body surface of the flat hairless hair needs to be selected, the complete fitting needs to be ensured, if the negative plate is in poor contact (such as infirm adhesion, gel drying and hair interference), the current density is locally increased, high-temperature skin burn is generated, the damage is caused to a patient, meanwhile, the state of the negative plate needs to be continuously monitored in the treatment process, and the work load of medical staff is increased. Disclosure of Invention The invention mainly aims to provide a multipolar water-cooling radio frequency ablation needle so as to solve the problems. To achieve the above object, the present invention provides a multipolar water-cooled radiofrequency ablation needle, comprising: the needle body is provided with a tip and a tail end at two ends respectively, two electrodes, namely a positive electrode and a negative electrode, are axially arranged on the needle body, and the needle body is hollow; The handle is arranged at the tail end of the needle body; An insulating coating layer disposed on a surface of the needle body, the insulating coating layer being located between the positive electrode and the negative electrode; the power lines are arranged in the needle body, two power lines are arranged, first ends of the two power lines are respectively connected with the positive electrode and the negative electrode, and second ends of the two power lines penetrate through the handle to be connected with a power connector. Further, be provided with the baffle in the needle body, the baffle will separate into intake chamber and play water chamber in the needle body, the baffle keep away from the one end of handle be provided with will intake chamber with go out the circulation hole of water chamber intercommunication, be provided with inlet tube and outlet pipe on the handle, the first end of inlet tube with intake chamber intercommunication, the second end is connected with the water tank, the first end of outlet pipe with go out the water chamber intercommunication, the second end with the water tank intercommunication, be provided with the water pump in the water tank. Further, an X-ray indication ring is further arranged on the needle body, the X-ray indication ring is sleeved on the needle body, and the X-ray indication ring is made of metal materials with density greater than that of the needle body. Further, a temperature sensor is arranged at one end, close to the tip, in the needle body. Further, an insulating support tube is arranged on the handle, the tail end of the needle body is sleeved in the insulating support tube, and the electrode is located on the outer side of the insulating support tube. Further, a plurality of electrodes are arranged at intervals along the axial direction of the needle body, the polarities of two adjacent electrodes are different, and an insulating coating is arranged between each two adjacent electrodes. The invention has the following beneficial effects: The needle body is provided with the plurality of electrodes, current can flow between adjacent currents on the needle body, a negative plate is not required to be used, the risk of damage to a patient is reduced, meanwhile, the energy is concentrated, the local heat generating efficiency is higher, the heat diffusion range is controllable, small focus or fine parts can be precisely ablated, and the needle body is particularly suitable for patients with sensitive skin or multiple parts needing treatment. Drawings FIG. 1 is a schematic view of a multipolar water-cooled RF ablation needle in accordance with the present invention. Fig. 2 is a schematic illustration of a multipolar water-cooled rf ablation needle according to an embodiment of the present invention. FIG. 3 is a schematic view of a multipolar water-cooled RF ablation needle septum of the present invention. Fig. 4 is a schema