Adjustable minimally invasive tungsten alloy needle-shaped electrode

Abstract

The utility model discloses an adjustable minimally invasive tungsten alloy needle-shaped electrode, which belongs to the technical field of minimally invasive equipment and comprises a rotating component, an electrode component, a connecting component and a limiting component, the rotating component comprises a threaded cylinder and two limiting rings, and the two limiting rings are clamped in the threaded cylinder; according to the needle-shaped electrode needle, needle-shaped electrode needle heads of different sizes can be formed by matching the forward-rotating threaded cylinder, the second movable rod, the threaded cylinder, the first movable rod and the electrode needle head, the adaptability of the needle-shaped electrode needle heads is improved, the moving electrode needle heads are moved out of the threaded cylinder by reversely rotating the threaded cylinder, and the size of the needle-shaped electrode needle heads is adjusted to be minimum. The needle-shaped electrode needle head is arranged in the threaded cylinder, the electrode needle head is contained in the threaded cylinder, the storage space of the needle-shaped electrode needle head is reduced, the needle-shaped electrode needle head can be conveniently carried, in the moving process of the needle-shaped electrode needle head, the electrode needle head is not prone to colliding with foreign objects to be damaged, and the normal service life of the needle-shaped electrode needle head is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of minimally invasive equipment, and in particular relates to an adjustable minimally invasive tungsten alloy needle electrode. Background Art

[0002] With the continuous development of medical technology, minimally invasive surgery has been widely used in the clinical field. Minimally invasive surgery has the advantages of less trauma, faster recovery, and fewer postoperative complications. It has become the preferred method for many surgeries. Minimally invasive surgeries abroad have begun to use minimally invasive tungsten alloy needle electrodes, and domestic 3D printed minimally invasive tungsten alloy needle electrodes are made by the School of Materials Science and Engineering of Shanghai Jiaotong University using 3D printing technology. Tungsten oxide is made through 3D printing technology, and finally a 3D printed minimally invasive tungsten alloy needle electrode is made through a chemical reduction reaction, which greatly reduces the manufacturing cost of minimally invasive tungsten alloy needle electrodes and solves the problem that minimally invasive tungsten alloy needle electrodes cannot be popularized in minimally invasive surgical operations due to their high prices.

[0003] However, the existing needle-shaped electrodes have a fixed size and poor adaptability. Users need to replace electrodes of different sizes according to actual conditions. When the needle-shaped electrode moves, the electrode needle at one end is slender and easy to collide with foreign objects and bend and damage, which reduces the normal service life of the needle-shaped electrode. In addition, the longer needle-shaped electrode occupies a larger storage space and is inconvenient to carry. Therefore, an adjustable minimally invasive tungsten alloy needle electrode is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable minimally invasive tungsten alloy needle electrode to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable minimally invasive tungsten alloy needle electrode, comprising a rotating component, an electrode component, a connecting component and a limiting component, the rotating component comprising a threaded barrel and two limiting rings, two limiting rings being clamped in the threaded barrel, the electrode component comprising a first threaded block, a first movable rod, a first limiting groove and an electrode needle head, the connecting component comprising a second threaded block, a second threaded rod and a second limiting groove, the first threaded block and the second threaded block are threadedly connected in the same threaded barrel, the first threaded block and the second threaded block are connected to the first movable rod and the second movable rod respectively on one side away from each other, the first limiting groove is arranged in the first threaded block and the first movable rod, the second limiting groove is arranged in the second threaded block and the second movable rod, one end of the first movable rod is connected to the electrode needle head, the limiting component comprises a bearing and a limiting rod, the bearing is clamped in the threaded barrel, the limiting rod is clamped in the bearing, and the limiting rod is slidably connected in the first limiting groove and the second limiting groove.

[0006] As a preferred implementation, the first threaded block and the second threaded block are arranged between two limiting rings, and the two limiting rings are symmetrically arranged in the threaded barrel.

[0007] As a preferred embodiment, the bearing is arranged between the first threaded block and the second threaded block.

[0008] As a preferred implementation, the cross-sectional shape of the limiting rod is set to be elliptical.

[0009] As a preferred implementation, the shapes of the first limiting groove and the second limiting groove are both set to be elliptical.

[0010] As a preferred implementation, the limiting rod is disposed in the threaded barrel, and the adjacent ends of the first movable rod and the second movable rod are both disposed in the threaded barrel.

[0011] As a preferred embodiment, the electrode needle is made of tungsten alloy, and one end of the electrode needle is conical.

[0012] As a preferred embodiment, the threaded barrel is provided with two parts of threads with opposite thread directions.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with a threaded barrel, a first threaded block, a second threaded block, a first movable rod, a second movable rod and a limit rod. When the threaded barrel is rotated forward, the first movable rod and the second movable rod are separated from each other. The second movable rod, the threaded barrel, the first movable rod and the electrode needle head cooperate with each other to form needle-shaped electrode needle heads of different sizes, thereby improving the adaptability of the needle-shaped electrode needle head. When the threaded barrel is reversed, the moving electrode needle head is moved out of the threaded barrel, so that the size of the needle-shaped electrode needle head is adjusted to the minimum, and the electrode needle head is stored in the threaded barrel, which not only reduces the storage space of the needle-shaped electrode needle head, but also makes the needle-shaped electrode needle head convenient to carry. In addition, during the movement of the needle-shaped electrode needle head, the electrode needle head is not easy to collide with foreign objects and thus be damaged, thereby ensuring the normal service life of the needle-shaped electrode needle head.

[0015] The utility model provides a limiting rod, a first limiting groove and a second limiting groove. Since the limiting rod is slidably connected in the first limiting groove and the second limiting groove, when the second movable rod is held and the threaded cylinder is rotated, the limiting rod can limit the first movable rod and the second movable rod respectively through the first limiting groove and the second limiting groove, so that the first movable rod and the second movable rod can move smoothly along their axial direction under the action of rotating the threaded cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the structure of the utility model in a frontal perspective;

[0017] Figure 2 It is a schematic diagram of a sectional structure of the utility model in a side view;

[0018] Figure 3 It is a schematic diagram of the sectional structure of the utility model in a front view.

[0019] In the figure: 1. rotating assembly; 11. threaded cylinder; 12. limiting ring; 2. electrode assembly; 21. first threaded block; 22. first movable rod; 23. first limiting groove; 24. electrode; 3. connecting assembly; 31. second threaded block; 32. second movable rod; 33. second limiting groove; 4. limiting assembly; 41. bearing; 42. limiting rod. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] See also Figure 1-3 The utility model provides an adjustable minimally invasive tungsten alloy needle electrode, including a rotating component 1, an electrode component 2, a connecting component 3 and a limiting component 4, the rotating component 1 includes a threaded barrel 11 and two limiting rings 12, the threaded barrel 11 is clamped with two limiting rings 12, the electrode component 2 includes a first threaded block 21, a first movable rod 22, a first limiting groove 23 and an electrode needle 24, the connecting component 3 includes a second threaded block 31, a second threaded rod and a second limiting groove 33, the first threaded block 21 and the second threaded block 31 are threadedly connected in the same threaded barrel 11, the first threaded block 21 and the second threaded block 31 are arranged between the two limiting rings 12, and the two limiting rings 12 are symmetrically arranged in the threaded barrel 11, by setting the limiting rings 12, the two limiting rings 12 can limit the movement stroke of the first threaded block 21 and the second threaded block 31, so that the first movable rod 22 and the second movable rod 32 that are far away from each other will not respectively drive the first limiting groove 23 and the second limiting groove 33 to move out of the limiting rod 42;

[0023] The first threaded block 21 and the second threaded block 31 have their sides away from each other connected to the first movable rod 22 and the second movable rod 32, respectively; the first limiting groove 23 is provided in the first threaded block 21 and the first movable rod 22; the second limiting groove 33 is provided in the second threaded block 31 and the second movable rod 32; one end of the first movable rod 22 is connected to the electrode needle 24; the limiting assembly 4 includes a bearing 41 and a limiting rod 42; the bearing 41 is provided between the first threaded block 21 and the second threaded block 31; the bearing 41 is clamped in the threaded barrel 11; by providing the bearing 41, the bearing 41 can limit and fix the limiting rod 42 in the threaded barrel 11;

[0024] The threaded barrel 11 is provided with two parts of threads with opposite thread directions. By setting the threaded barrel 11 and the second movable rod 32, when the second movable rod 32 is held and the threaded barrel 11 is rotated forward, the second movable rod 32 can not only limit the second threaded block 31, but also limit the first threaded block 21 by the limiting rod 42 slidably connected thereto, so that the first threaded block 21 and the second threaded block 31 are not easy to rotate under the action of rotating the threaded barrel 11, so that the first threaded block 21 and the second threaded block 31 can be close to or away from each other along the axial direction thereof under the action of rotating the threaded barrel 11;

[0025] The limiting rod 42 is clamped in the bearing 41, and the limiting rod 42 is slidably connected in the first limiting groove 23 and the second limiting groove 33. The cross-sectional shape of the limiting rod 42 is set to be elliptical, and the shapes of the first limiting groove 23 and the second limiting groove 33 are both set to be elliptical. By setting the limiting rod 42, the first limiting groove 23 and the second limiting groove 33, since the limiting rod 42 is slidably connected in the first limiting groove 23 and the second limiting groove 33, when the second movable rod 32 is held and the threaded barrel 11 is rotated, the limiting rod 42 can limit the first movable rod 22 and the second movable rod 32 respectively through the first limiting groove 23 and the second limiting groove 33, so that the first movable rod 22 and the second movable rod 32 can move smoothly along the axial direction thereof under the action of rotating the threaded barrel 11;

[0026] The limiting rod 42 is arranged in the threaded tube 11, and the adjacent ends of the first movable rod 22 and the second movable rod 32 are both arranged in the threaded tube 11. The material of the electrode needle 24 is set to tungsten alloy, and one end of the electrode needle 24 is set to a cone. By setting the electrode needle 24, because one end of the electrode needle 24 is set to a cone, and the electrode needle 24 is slender, the trauma during puncture is small, and the pain during the operation and the trauma during the recovery period are reduced. Because the material of the electrode needle 24 is set to tungsten alloy, and the tapered end of the electrode needle 24 is specially treated, the electrode needle 24 has good stability and sharpness, which is beneficial to the accuracy and safety of the surgical operation. The electrode needle 24 has good conductivity and corrosion resistance, a long service life, and the electrode needle 24 is manufactured by 3D printing.

[0027] The working principle and use process of the utility model are as follows: when the electrode needle 24 needs to be used, the second movable rod 32 is held, and then the threaded barrel 11 is rotated forwardly. Since the threaded barrel 11 is provided with two parts of threads with opposite thread directions, and the first threaded block 21 and the second threaded block 31 are respectively threadedly connected to the threads of the two parts, the forwardly rotating threaded barrel 11 can drive the first threaded block 21 and the second threaded block 31 to move away from each other, and the first threaded block 21 and the second threaded block 31 moving away from each other respectively drive the first movable rod 22 and the second movable rod 32 to move away from each other, and the moving first movable rod 22 drives the electrode needle 24 to move out of the threaded barrel 11, and the first movable rod 22 and the second movable rod 32 moving away from each other respectively drive the first limiting groove 23 and the second limiting groove 33 to slide outside the limiting rod 42. When the size of the electrode needle 24 is adjusted to a suitable length, the threaded barrel 11 is stopped, and then the electrode needle 24 can be used.

[0028] When it is necessary to move the electrode needle 24, the threaded barrel 11 is reversed. The rotating threaded barrel 11 can drive the first threaded block 21 and the second threaded block 31 to approach each other. The first threaded block 21 and the second threaded block 31 approaching each other respectively drive the first movable rod 22 and the second movable rod 32 to approach each other. The first movable rod 22 and the second movable rod 32 approaching each other respectively drive the first limiting groove 23 and the second limiting groove 33 to slide outside the limiting rod 42. Then, the moving first movable rod 22 drives the electrode needle 24 to move into the threaded barrel 11.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable minimally invasive tungsten alloy needle electrode, comprising a rotating assembly (1), an electrode assembly (2), a connecting assembly (3) and a limiting assembly (4), characterized in that: The rotating assembly (1) comprises a threaded barrel (11) and two limiting rings (12), the threaded barrel (11) being clamped with the two limiting rings (12), the electrode assembly (2) comprising a first threaded block (21), a first movable rod (22), a first limiting groove (23) and an electrode needle (24), the connecting assembly (3) comprising a second threaded block (31), a second threaded rod and a second limiting groove (33), the first threaded block (21) and the second threaded block (31) being threadedly connected in the same threaded barrel (11), and the first threaded block (21) and the second threaded block (31) having a surface away from each other being respectively connected to the first movable rod ( The first limit groove (23) is provided in the first threaded block (21) and the first movable rod (22), the second limit groove (33) is provided in the second threaded block (31) and the second movable rod (32), one end of the first movable rod (22) is connected to the electrode needle head (24), the limit assembly (4) comprises a bearing (41) and a limit rod (42), the bearing (41) is clamped in the threaded barrel (11), the limit rod (42) is clamped in the bearing (41), and the limit rod (42) is slidably connected in the first limit groove (23) and the second limit groove (33).

2. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The first threaded block (21) and the second threaded block (31) are arranged between two limiting rings (12), and the two limiting rings (12) are symmetrically arranged in the threaded barrel (11).

3. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The bearing (41) is arranged between the first threaded block (21) and the second threaded block (31).

4. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The cross-sectional shape of the limiting rod (42) is set to be elliptical.

5. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The shapes of the first limiting groove (23) and the second limiting groove (33) are both set to be elliptical.

6. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The limiting rod (42) is arranged in the threaded barrel (11), and the adjacent ends of the first movable rod (22) and the second movable rod (32) are both arranged in the threaded barrel (11).

7. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The material of the electrode needle head (24) is set to be tungsten alloy, and one end of the electrode needle head (24) is set to be conical.

8. The adjustable minimally invasive tungsten alloy needle electrode according to claim 1, characterized in that: The threaded barrel (11) is provided with two parts of threads with opposite thread directions.

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