阅读说明：本技术 一种三维立体针型电极 (Three-dimensional needle electrode ) 是由 周兵 周持倩 苏英 尹作凯 刘雨 于 2020-08-07 设计创作，主要内容包括：本发明提供一种三维立体针型电极,涉及医疗器械技术领域,一种三维立体针型电极,包括电极柄、设置于电极柄端部的电极杆以及设置于电极杆远离电极柄的一端的电极头,电极头包括弧形部、针头部以及用于连接弧形部和针头部的连接部,电极杆为导电件,电极头为钨制件。本发明一种三维立体针型电极可以多角度多方向弯曲,可以更好的适应腔道,且同时不同于柔性钨针,保持了钨针良好的刚性和精确的角度,不仅可以更好的实施精细手术,同时还可以兼顾大夫的术式需求,利用刚性的钨针实现一些刺、拨、推、挑等动作。(The invention provides a three-dimensional needle electrode, which relates to the technical field of medical instruments and comprises an electrode handle, an electrode rod arranged at the end part of the electrode handle and an electrode tip arranged at one end of the electrode rod far away from the electrode handle, wherein the electrode tip comprises an arc-shaped part, a needle head part and a connecting part for connecting the arc-shaped part and the needle head part, the electrode rod is a conductive piece, and the electrode tip is a tungsten piece. The three-dimensional needle electrode can be bent in multiple angles and directions, can better adapt to a cavity channel, is different from a flexible tungsten needle, keeps good rigidity and an accurate angle of the tungsten needle, can better implement fine surgery, can meet the surgical requirements of doctors, and realizes certain actions such as puncturing, poking, pushing, picking and the like by using the rigid tungsten needle.)

1. A three-dimensional needle electrode is characterized in that: the electrode comprises an electrode handle (1), an electrode rod (2) arranged at the end part of the electrode handle (1) and an electrode tip (3) arranged at one end, far away from the electrode handle (1), of the electrode rod (2), wherein the electrode tip (3) comprises an arc-shaped part (31), a needle head part (32) and a connecting part (33) used for connecting the arc-shaped part (31) and the needle head part (32), the electrode rod (2) is a conductive part, and the needle head part (32) is a tungsten part.

2. The needle electrode of claim 1, wherein: the connecting part (33) comprises an intermediate part (331), a first connecting ring (332) used for being connected with the arc-shaped part (31) and a second connecting ring (333) used for being connected with the needle head part (32), a first limiting protrusion is arranged on the inner side of the first connecting ring (332), a second limiting protrusion (334) is arranged on the inner side of the second connecting ring (333), a first protruding column (311) is arranged at the end part, close to the connecting part (33), of the arc-shaped part (31), a first groove (312) used for sliding of the first limiting protrusion is arranged on the first protruding column (311), a second protruding column (321) is arranged at the end part, close to the connecting part (33), of the needle head part (32), and a second groove (322) used for sliding of the second limiting protrusion (334) is arranged on the second protruding column (321).

3. The needle electrode as claimed in claim 2, wherein: the included angle of the planes of the first connecting ring (332) and the second connecting ring (333) of the connecting part (33) ranges from 1 degree to 89 degrees.

4. The needle electrode as claimed in claim 2, wherein: the first protruding post (311) has an outer diameter equal to the inner diameter of the first connection ring (332), and the second protruding post (321) has an outer diameter equal to the inner diameter of the second connection ring (333).

5. The needle electrode as claimed in claim 2, wherein: the number of the connecting parts (33) is at least one.

6. The needle electrode of claim 1, wherein: the electrode handle (1) is provided with raised grains (11).

7. The needle electrode of claim 1, wherein: the arc-shaped portion (31) has a bending angle ranging from 60 DEG to 150 deg.

8. The needle electrode as claimed in claim 2, wherein: the number of the first limiting bulges is at least one.

9. The needle electrode as claimed in claim 2, wherein: the number of the second limit protrusions (334) is at least one.

10. The needle electrode as claimed in claim 2, wherein: the outer sides of the first connecting ring (332) and the second connecting ring (333) are respectively provided with an angle marking groove (335), and the end parts of the needle head part (32) and the arc-shaped part (31) close to the connecting part (33) are respectively provided with an angle marking scale mark (313).

Technical Field

The invention relates to the technical field of medical instruments,

in particular, the present invention relates to a three-dimensional needle-type electrode.

Background

The skull base surgical operation through the nasal cavity can be operated by applying surgical instruments such as a tungsten needle electrode and the like, and the tungsten needle electrode has the characteristics of small wound and low heat damage, can well protect the tissues of the operation part and is beneficial to postoperative recovery. However, the nasal skull base operation belongs to a minimally invasive deep operation, the internal tissue structure from the nasal cavity to the skull base is very complex, and focus tissues are located at narrow, bent or special corner positions, which puts higher requirements on surgical instruments. In order to meet the clinical requirement, various tungsten needle electrode products appear in the industry successively, but all have various defects to different degrees.

The common tungsten needle electrode is the most common tungsten needle electrode in the market, has simple structure, straight needle-shaped working section and simple process, is difficult to completely meet the requirements of skull base operation, does not have the function of changing angles and directions, and cannot act on tissues of special parts in the transnasal operation; the other type is a tungsten needle electrode capable of being flexibly bent, which is developed in recent years, the whole structure of the electrode is the same as that of a common tungsten needle electrode, and the electrode is characterized in that a rod part at the front end is made of a flexible material, and can be bent into different shapes and angles according to needs, so that the electrode aims to meet the operation needs of special cavity shapes in the operation through the nasal skull base, but the electrode has the following defects: firstly, the product has insufficient rigidity, and although the product can be bent according to needs, the product cannot be stably kept in a certain shape after being bent, and secondary deformation is easily caused by stress in the operation, so that the accuracy of the operation cannot be ensured, namely accidental injury is easily caused, and the operation time is wasted; secondly, the product is bent, so that extra operation time of a doctor in an operation or before the operation is increased, even repeated adjustment is needed because the product cannot be bent in place once, the operation requirements and complexity of instruments for the doctor are increased, and the waste of operation time is also caused.

Therefore, in order to solve these problems, it is necessary to design a reasonable three-dimensional needle electrode for medical use.

Disclosure of Invention

The invention aims to provide a three-dimensional needle electrode which can be bent in multiple angles and multiple directions, is different from a planar tungsten needle in that a tungsten needle is bent and folded in multiple dimensions, can better adapt to a cavity channel, is different from a flexible tungsten needle, keeps good rigidity and accurate angle of the tungsten needle, can better implement fine surgery, can meet the requirements of doctors on the operation style, and realizes certain actions such as pricking, poking, pushing, picking and the like by using the rigid tungsten needle.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

the electrode tip comprises an arc-shaped part, a needle head part and a connecting part for connecting the arc-shaped part and the needle head part, the electrode rod is a conductive piece, and the electrode tip is a tungsten piece.

Preferably, the connecting portion includes an intermediate member, a first connecting ring for connecting with the arc portion, and a second connecting ring for connecting with the needle portion, a first limiting protrusion is disposed on an inner side of the first connecting ring, a second limiting protrusion is disposed on an inner side of the second connecting ring, a first protruding column is disposed on an end portion of the arc portion close to the connecting portion, a first groove for the first limiting protrusion to slide is disposed on the first protruding column, a second protruding column is disposed on an end portion of the needle portion close to the connecting portion, and a second groove for the second limiting protrusion to slide is disposed on the second protruding column.

Preferably, the included angle between the planes of the first connecting ring and the second connecting ring of the connecting part is 1-89 degrees, and the axial section of the connecting part is a right trapezoid.

Preferably, the first protruding column has an outer diameter equal to an inner diameter of the first connection ring.

Preferably, the outer diameter of the second protruding column is equal to the inner diameter of the second connection ring.

Preferably, the number of the connecting portions is at least one, and the bending directions of the plurality of connecting portions may be different.

Preferably, the electrode handle is provided with raised grains.

Preferably, the electrode head is made of tungsten, and actually, the arc-shaped part, the needle head part and the connecting part are made of tungsten which is integrally formed.

Preferably, the arc portion has a bending angle ranging from 60 ° to 150 °.

Preferably, the number of the first limiting protrusions is at least one.

Preferably, the number of the second limiting protrusions is at least one.

Preferably, the first connecting ring and the second connecting ring are provided with angle marking grooves on the outer sides, and the end parts of the needle head part and the arc-shaped part close to the connecting part are provided with angle marking scale marks.

The three-dimensional needle-shaped electrode has the beneficial effects that: can multi-angle multi-direction bending, tungsten needle itself adopts the crooked folding of a plurality of dimensions direction, is different from plane tungsten needle, adaptation chamber that can be better says, and is different from flexible tungsten needle simultaneously, has kept the good rigidity of tungsten needle and accurate angle, not only can be better carry out the meticulous operation, can also compromise doctor's art formula demand simultaneously, utilizes rigid tungsten needle to realize some stings, dials, pushes away, chooses action such as.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

figure 2 is a schematic view of the mounting of the electrode head according to one embodiment of the invention;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

in the figure: 1. the electrode comprises an electrode handle, 11, convex lines, 2, an electrode rod, 3, an electrode head, 31, an arc-shaped part, 311, a first convex column, 312, a first groove, 313, an angle marking scale mark, 32, a needle head part, 321, a second convex column, 322, a second groove, 33, a connecting part, 331, an intermediate part, 332, a first connecting ring, 333, a second connecting ring, 334, a second limiting protrusion, 335 and an angle marking groove.

Detailed Description

The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and structures set forth in these embodiments does not limit the scope of the invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.