Arc extinguishing ablation needle

Abstract

The utility model discloses an arc extinguishing ablation needle, which relates to the ablation needle field, and comprises a needle body, a handle and a wire assembly, one side of the needle body is provided with the handle, the end part of the handle is provided with the wire assembly, the needle body, the handle and the wire assembly form an ablation needle body, the needle body is composed of a needle rod and a puncture head, the outer wall of the puncture head is sleeved with a needle rod, the outer wall of the needle rod is sleeved with a high-voltage insulating layer, the handle is composed of a handle body and a discharge connecting column, the discharge connecting column is arranged in the handle body, and the discharge connecting column is connected with the end of the needle rod. According to the ablation needle, the insulating ceramic puncture head which can be used for direct puncture is arranged at the foremost end of the needle rod of the ablation needle, so that a certain potential safety hazard to a patient caused by a sparking phenomenon due to the fact that an electrode at the foremost end of the ablation needle is very sharp and is easy to generate electric charge concentration is avoided, and the safety and the reliability of an operation are improved.

Description

Technical Field

[0001] The utility model relates to the field of ablation needles, in particular to an arc-extinguishing ablation needle. Background Art

[0002] High-voltage steep pulse tumor ablation is a new tumor ablation technology. It releases high-voltage pulses to tumor cells through ablation, causing nanoscale irreversible electroporation of the cell membrane, destroying the intracellular balance and leading to cell apoptosis. After tumor cell apoptosis, phagocytes in the body will engulf the cell fragments, and the treated area is gradually replaced by normal tissue.

[0003] At present, the existing high-voltage steep pulse tumor ablation needles are usually a single needle structure, that is, each ablation needle only contains an electrode at the front end of the ablation needle. During surgical treatment, the two ablation needles are directly inserted through percutaneous puncture to discharge the biological tissue between the two electrodes to ablate the tumor. The discharge voltage between the two electrodes of high-voltage steep pulse tumor ablation is very high, usually more than two kilovolts. Due to the need for percutaneous puncture, the electrode at the front end of the ablation needle needs to be very sharp. Therefore, it is easy to generate charge concentration at the front end of the electrode and produce sparks, which will cause certain safety hazards to patients. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide an arc-extinguishing ablation needle to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an arc-extinguishing ablation needle, comprising a needle body, a handle and a wire assembly, a handle is provided on one side of the needle body, a wire assembly is provided at the end of the handle, the needle body, the handle and the wire assembly constitute the ablation needle body, the needle body is composed of a needle rod and a puncture head, the outer wall of the puncture head is provided with a needle rod, and the outer wall of the needle rod is provided with a high-voltage insulating layer, the handle is composed of a handle body and a discharge connecting column, the discharge connecting column is provided inside the handle body, and the discharge connecting column is connected to the end of the needle rod, and the end of the needle rod is provided There is a high-voltage silicone wire conductor, and the outer wall of the high-voltage silicone wire conductor is provided with a high-voltage silicone wire insulation layer. The wire assembly includes a silicone high-voltage wire and a high-voltage plug. The silicone high-voltage wire is composed of a high-voltage silicone wire conductor and a high-voltage silicone wire insulation layer, and the outer wall of the high-voltage silicone wire conductor is provided with a high-voltage silicone wire insulation layer. One end of the high-voltage silicone wire conductor is inserted into the handle body and connected to the rear end of the discharge connecting column, and the other end of the high-voltage silicone wire conductor is connected to the high-voltage plug. The puncture head is made of ceramic insulating material, the rear end of the puncture head is cylindrical, and the front end of the puncture head is sharp.

[0006] By adopting the above technical solution, an insulating ceramic puncture head that can be used for direct puncture is installed at the front end of the needle shaft of the ablation needle, thereby avoiding the sparking phenomenon caused by the concentration of electric charge at the front end of the ablation needle, which is very sharp and poses certain safety hazards to patients, thereby improving the safety and reliability of the operation.

[0007] The utility model is further configured such that the needle rod is a hollow thin cylindrical shape, and the material of the needle rod is a discharge metal material, the front end of the needle rod is exposed outside the high-voltage insulation layer, and the length of the exposed part of the front end of the needle rod is 10-50mm; and the rear end of the needle rod is also exposed outside the high-voltage insulation layer.

[0008] By adopting the above technical solution, the hollow thin cylindrical needle rod can be conveniently installed with the puncture head, and the needle rod is exposed to the outside and can discharge electricity, thereby discharging and ablating the tumor.

[0009] The utility model is further configured such that the tail end of the puncture head is connected to the front end of the needle rod, and the outer diameter of the puncture head at the largest point is the same as the outer diameter of the front end of the needle rod.

[0010] By adopting the above technical solution, the hollow thin cylindrical high-voltage insulation layer can be sleeved on the outer wall of the needle rod, and the high-voltage resistant insulating material prevents the outer wall of the needle rod from discharging, thereby protecting the human body.

[0011] The utility model is further configured that the high-voltage insulation layer is in the shape of a hollow thin cylinder, and the material of the high-voltage insulation layer is an insulation material that is resistant to high voltage.

[0012] By adopting the above technical solution, the hollow thin cylindrical high-voltage insulation layer can be sleeved on the outer wall of the needle rod, and the high-voltage resistant insulating material prevents the outer wall of the needle rod from discharging, thereby protecting the human body.

[0013] The utility model is further configured such that the outer wall of the needle rod is provided with a groove, the high-voltage insulating layer is installed in the groove, the outer diameter of the high-voltage insulating layer is the same as the outer diameter of the needle rod, and the rear end of the high-voltage insulating layer and the rear end of the needle rod are both inserted into the handle body.

[0014] By adopting the above technical solution, the high-voltage insulation layer can be easily installed through the opened groove, so that the outer wall of the installed high-voltage insulation layer fits with the outer wall of the needle rod, so that the high-voltage insulation layer does not protrude.

[0015] The utility model is further configured that a handle back cover is installed at one end of the handle body.

[0016] By adopting the above technical solution, the end of the handle body can be sealed and fixed by the provided handle rear cover, thereby protecting the discharge connection column inside the handle body.

[0017] In summary, the utility model mainly has the following beneficial effects:

[0018] The utility model is provided with a puncture head, a needle rod, a high-voltage insulating layer and a wire assembly. An insulating ceramic puncture head for direct puncture is installed at the front end of the needle rod of the ablation needle, thereby avoiding the sparking phenomenon caused by the concentration of electric charges at the front end of the ablation needle, which is very sharp and poses certain safety hazards to patients, thereby improving the safety and reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the handle body of the utility model;

[0021] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 For this utility model Figure 1 Enlarged view of point B in the middle.

[0023] In the figure: 1. needle body; 2. handle; 3. silicone high-voltage wire; 4. high-voltage plug; 5. puncture head; 6. needle rod; 7. high-voltage insulation layer; 8. handle body; 9. discharge connection column; 10. high-voltage silicone wire conductor; 11. high-voltage silicone wire insulation layer; 12. handle back cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0025] The following describes an embodiment of the utility model based on its overall structure.

[0026] An arc-extinguishing ablation needle, such as Figure 1 - Figure 4As shown, it includes a needle body 1, a handle 2 and a wire assembly. The handle 2 is arranged on one side of the needle body 1, and the wire assembly is arranged at the end of the handle 2. The needle body 1, the handle 2 and the wire assembly constitute the ablation needle body. The needle body 1 is composed of a needle rod 6 and a puncture head 5. The outer wall of the puncture head 5 is covered with the needle rod 6, and the outer wall of the needle rod 6 is covered with a high-voltage insulation layer 7. The handle 2 is composed of a handle body 8 and a discharge connecting column 9. The discharge connecting column 9 is arranged inside the handle body 8, and the discharge connecting column 9 is connected to the end of the needle rod 6. The end of the needle rod 6 is provided with a high-voltage silicone wire conductor 10, and the outer wall of the high-voltage silicone wire conductor 10 is covered with a high-voltage silicone wire insulation layer 11. The puncture head 5 is made of ceramic insulating material, and the rear end of the puncture head 5 is cylindrical, and the front end of the puncture head 5 is sharp. The wire assembly includes a silicone high-voltage wire 3 and a high-voltage plug 4. The silicone high-voltage wire 3 is composed of a high-voltage silicone wire conductor 10 and a high-voltage silicone wire insulation layer 11, and the outer wall of the high-voltage silicone wire conductor 10 is provided with a high-voltage silicone wire insulation layer 11. One end of the high-voltage silicone wire conductor 10 is inserted into the handle body and connected to the rear end of the discharge connecting column 9, and the other end of the high-voltage silicone wire conductor 10 is connected to the high-voltage plug 4. The wire assembly can facilitate the connection of the high-voltage plug 4 with the external line, so that puncture can be performed for surgical treatment.

[0027] See also Figure 3 The needle rod 6 is in a hollow and thin cylindrical shape, and the material of the needle rod 6 is a discharge metal material. The front end of the needle rod 6 is exposed outside the high-voltage insulating layer 7, and the length of the exposed front end of the needle rod 6 is 10-50 mm; and the rear end of the needle rod 6 is also exposed outside the high-voltage insulating layer 7. The hollow and thin cylindrical needle rod 6 can facilitate the installation of the puncture head 5, and the needle rod 6 can be exposed to the outside to discharge, thereby discharging to ablate the tumor.

[0028] See also Figure 3 The tail end of the puncture head 5 is connected to the front end of the needle rod 6, and the outer diameter of the puncture head 5 at the maximum point is the same as the outer diameter of the front end of the needle rod 6.

[0029] See also Figure 4 The high-voltage insulating layer 7 is in the shape of a hollow thin cylinder, and the material of the high-voltage insulating layer 7 is an insulating material resistant to high voltage. The hollow thin cylindrical high-voltage insulating layer 7 can be sleeved on the outer wall of the needle rod 6. The insulating material resistant to high voltage prevents the outer wall of the needle rod 6 from discharging, thereby protecting the human body.

[0030] See also Figure 3The outer wall of the needle rod 6 is provided with a groove, and the high-voltage insulating layer 7 is installed in the groove. The outer diameter of the high-voltage insulating layer 7 is the same as the outer diameter of the needle rod 6, and the rear end of the high-voltage insulating layer 7 and the rear end of the needle rod 6 are both inserted into the handle body 8. The high-voltage insulating layer 7 can be easily installed through the provided groove, so that the outer wall of the installed high-voltage insulating layer 7 fits with the outer wall of the needle rod 6, so that the high-voltage insulating layer 7 does not protrude. It is convenient for the handle to drive the needle rod 6 to perform puncture when installed in the handle body 8.

[0031] See also Figure 2 A handle back cover 12 is installed at one end of the handle body 8, and the handle back cover 12 is fixedly connected to the handle body 8 by glue. The handle back cover 12 can seal and fix the end of the handle body 8 to protect the discharge connection column 9 inside the handle body 8.

[0032] The working principle of the utility model is as follows: when in use, the front end of the needle rod 6 is installed with an insulating ceramic puncture head 5 which can be used for direct puncture, and the puncture head 5 enters the skin. Since the material of the puncture head 5 is insulating ceramic material, the sparking phenomenon caused by the concentration of electric charge due to the very sharp electrode at the front end of the ablation needle is avoided, and then the operation can be performed, thereby improving the safety and reliability of the operation.

[0033] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An arc-extinguishing ablation needle, comprising a needle body (1), a handle (2) and a wire assembly, wherein the handle (2) is arranged on one side of the needle body (1), and the wire assembly is arranged at the end of the handle (2), and the needle body (1), the handle (2) and the wire assembly constitute the ablation needle body, characterized in that: The needle body (1) is composed of a needle rod (6) and a puncture head (5); the outer wall of the puncture head (5) is provided with the needle rod (6), and the outer wall of the needle rod (6) is provided with a high-voltage insulation layer (7); the puncture head (5) is made of a ceramic insulation material; the handle (2) is composed of a handle body (8) and a discharge connection column (9); the handle body (8) is provided with a discharge connection column (9), and the discharge connection column (9) is connected to the end of the needle rod (6); the wire assembly comprises a silicone high-voltage wire (3) and a high-voltage plug (4); the silicone high-voltage wire (3) is composed of a high-voltage silicone wire conductor (10) and a high-voltage silicone wire insulation layer (11), and the outer wall of the high-voltage silicone wire conductor (10) is provided with a high-voltage silicone wire insulation layer (11).

2. The arc-extinguishing ablation needle according to claim 1, characterized in that: The rear end of the puncture head (5) is cylindrical, and the front end of the puncture head (5) is sharp.

3. The arc-extinguishing ablation needle according to claim 2, characterized in that: The needle rod (6) is in the shape of a hollow thin cylinder, and the material of the needle rod (6) is a discharge metal material. The front end of the needle rod (6) is exposed outside the high-voltage insulation layer (7), and the length of the exposed part of the front end of the needle rod (6) is 10-50 mm; and the rear end of the needle rod (6) is also exposed outside the high-voltage insulation layer (7).

4. The arc-extinguishing ablation needle according to claim 3, characterized in that: The rear end of the puncture head (5) is connected to the front end of the needle rod (6), and the outer diameter of the puncture head (5) at its maximum point is the same as the outer diameter of the front end of the needle rod (6).

5. The arc-extinguishing ablation needle according to claim 4, characterized in that: The high-voltage insulation layer (7) is in the shape of a hollow thin cylinder, and the material of the high-voltage insulation layer (7) is an insulation material that is resistant to high voltage.

6. The arc-extinguishing ablation needle according to claim 5, characterized in that: The outer wall of the needle rod (6) is provided with a groove, the high-voltage insulating layer (7) is installed in the groove, the outer diameter of the high-voltage insulating layer (7) is the same as the outer diameter of the needle rod (6), and the rear end of the high-voltage insulating layer (7) and the rear end of the needle rod (6) are both inserted into the handle body (8).

7. The arc-extinguishing ablation needle according to claim 6, characterized in that: One end of the high-voltage silicone wire conductor (10) is inserted into the handle body and connected to the rear end of the discharge connection column (9), and the other end of the high-voltage silicone wire conductor (10) is connected to the high-voltage plug (4).

8. The arc-extinguishing ablation needle according to claim 7, characterized in that: A handle rear cover (12) is mounted on one end of the handle body (8).

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