A three-dimensional needle-shaped electrode

Abstract

The present invention provides a three-dimensional needle-shaped electrode, which relates to the technical field of medical devices. The three-dimensional needle-shaped electrode comprises an electrode handle, an electrode rod arranged at the end of the electrode handle, and an electrode head arranged at one end of the electrode rod away from the electrode handle. The electrode head comprises an arc portion, a needle head, and a connecting portion for connecting the arc portion and the needle head. The electrode rod is a conductive member, and the electrode head is a tungsten member. The three-dimensional needle-shaped electrode of the present invention can be bent at multiple angles and directions, can better adapt to the cavity, and at the same time, unlike the flexible tungsten needle, maintains the good rigidity and precise angle of the tungsten needle, can not only better implement delicate surgery, but also can take into account the doctor's surgical requirements, and use the rigid tungsten needle to achieve some actions such as pricking, pulling, pushing, and picking.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices.

[0002] In particular, the present invention relates to a three-dimensional needle-shaped electrode. Background Art

[0003] Transnasal skull base surgery will use surgical instruments such as tungsten needle electrodes for the operation. The reason is that tungsten needle electrodes have the characteristics of small trauma and low thermal damage, which can well protect the tissues in the surgical site and help postoperative recovery. However, since transnasal skull base surgery is a minimally invasive deep surgery, the internal tissue structure from the nasal cavity to the skull base is very complex, and the lesion tissue may be located in narrow, curved or special corners, which puts higher requirements on surgical instruments. In order to meet this clinical demand, a variety of tungsten needle electrode products have appeared in the industry, but they all have various defects to varying degrees.

[0004] The most commonly used tungsten needle electrode on the market has a simple structure and a straight needle-shaped working section. Its process is simple, but it is difficult to fully meet the needs of skull base surgery. It does not have the function of changing angles and directions, and cannot have an effect on special tissues in transnasal surgery; the other type is a flexibly bendable tungsten needle electrode, which has appeared in recent years. Its overall structure is the same as that of the ordinary tungsten needle electrode. Its characteristic is that the front rod is made of flexible material and can be bent into different shapes and angles as needed. Its purpose is to meet the surgical needs of special cavity shapes in transnasal skull base surgery. However, this type of electrode has the following disadvantages: First, the product is not rigid enough. Although it can be bent as needed, it cannot maintain a certain shape firmly after bending. It is easy to cause secondary deformation due to force during the operation, which cannot ensure the accuracy of the surgical operation, which is easy to cause accidental injury and waste surgical time; second, bending the product increases the doctor's extra operation time during or before the operation, and even requires repeated adjustments due to the inability to be bent in place at a single time, which increases the requirements and complexity of the instrument operation for the doctor and also causes a waste of surgical time.

[0005] Therefore, in order to solve these problems, it is necessary to design a reasonable three-dimensional needle-shaped electrode for medical use. Summary of the invention

[0006] The purpose of the present invention is to provide a tungsten needle that can be bent in multiple angles and directions. The tungsten needle itself is bent and folded in multiple dimensions. Different from the flat tungsten needle, it can better adapt to the cavity. At the same time, different from the flexible tungsten needle, it maintains the good rigidity and precise angle of the tungsten needle. It can not only better implement delicate surgery, but also take into account the doctor's surgical requirements. It uses a rigid tungsten needle to achieve some three-dimensional needle-shaped electrodes for actions such as pricking, plucking, pushing, and picking.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A three-dimensional needle-shaped electrode comprises an electrode handle, an electrode rod arranged at the end of the electrode handle, and an electrode head arranged at one end of the electrode rod away from the electrode handle, the electrode head comprises an arc portion, a needle head portion, and a connecting portion for connecting the arc portion and the needle head portion, the electrode rod is a conductive part, and the electrode head is a tungsten part.

[0009] As a preferred embodiment of the present invention, the connecting part includes an intermediate piece, a first connecting ring for connecting to the arc-shaped part, and a second connecting ring for connecting to the needle head, a first limiting protrusion is arranged on the inner side of the first connecting ring, a second limiting protrusion is arranged on the inner side of the second connecting ring, a first protrusion column is arranged at the end of the arc-shaped part close to the connecting part, a first groove for the sliding of the first limiting protrusion is arranged on the first protrusion column, a second protrusion column is arranged at the end of the needle head close to the connecting part, and a second groove for the sliding of the second limiting protrusion is arranged on the second protrusion column.

[0010] As a preferred embodiment of the present invention, the angle between the planes where the first connecting ring and the second connecting ring of the connecting portion are located ranges from 1° to 89°. In fact, the axial section of the connecting portion is a right-angle trapezoid.

[0011] As a preferred embodiment of the present invention, the outer diameter of the first protruding column is equal to the inner diameter of the first connecting ring.

[0012] As a preferred embodiment of the present invention, the outer diameter of the second protruding column is equal to the inner diameter of the second connecting ring.

[0013] As a preference of the present invention, the number of the connecting portion is at least one, and the bending directions of the multiple connecting portions may be different.

[0014] As a preferred embodiment of the present invention, the electrode handle is provided with raised patterns.

[0015] As a preferred embodiment of the present invention, the electrode head is a tungsten part. In fact, the arc portion, the needle head portion and the connecting portion are an integrally formed tungsten part.

[0016] As a preferred embodiment of the present invention, the bending angle of the arc portion ranges from 60° to 150°.

[0017] As a preferred embodiment of the present invention, the number of the first limiting protrusion is at least one.

[0018] As a preferred embodiment of the present invention, the number of the second limiting protrusion is at least one.

[0019] As a preferred embodiment of the present invention, angle marking grooves are provided on the outer sides of the first connecting ring and the second connecting ring, and angle marking scale lines are provided on the ends of the needle head and the arc-shaped portion close to the connecting portion.

[0020] The beneficial effects of the three-dimensional needle-shaped electrode of the present invention are: it can be bent in multiple angles and directions. The tungsten needle itself is bent and folded in multiple dimensions. Unlike a flat tungsten needle, it can better adapt to the cavity. At the same time, unlike a flexible tungsten needle, it maintains the good rigidity and precise angle of the tungsten needle. It can not only better implement delicate surgery, but also take into account the doctor's surgical requirements, and use the rigid tungsten needle to achieve some actions such as pricking, plucking, pushing, and picking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the installation of an electrode head according to an embodiment of the present invention;

[0023] Figure 3 It is a structural schematic diagram of another embodiment of the present invention;

[0024] In the figure: 1, electrode handle, 11, raised pattern, 2, electrode rod, 3, electrode head, 31, arc-shaped portion, 311, first raised column, 312, first groove, 313, angle marking scale line, 32, needle head, 321, second raised column, 322, second groove, 33, connecting portion, 331, middle piece, 332, first connecting ring, 333, second connecting ring, 334, second limiting protrusion, 335, angle marking groove. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0026] 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 arrangements of modules and structures set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0027] 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.

[0028] Technologies, methods, and systems known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and systems should be considered part of the authorization specification.

[0029] Embodiment 1: Figure 1 ,3 The figure is only one embodiment of the present invention, a three-dimensional needle-shaped electrode, comprising an electrode handle 1, an electrode rod 2 arranged at the end of the electrode handle 1, and an electrode head 3 arranged at the end of the electrode rod 2 away from the electrode handle 1, the electrode head 3 comprises an arc portion 31, a needle head 32 and a connecting portion 33 for connecting the arc portion 31 and the needle head 32, the electrode rod 2 is a conductive member, and the electrode head 32 is a tungsten member.

[0030] It should be noted here that the electrode head 3 is entirely made of tungsten. In fact, the arc portion 31, the needle head portion 32 and the connecting portion 33 are integrally formed tungsten parts.

[0031] The number of the connecting portion 33 is at least one, and there are multiple options for the bending angle of the arc portion 31 and the length of the connecting portion 33.

[0032] That is, a series of electrode needles with different bending angles can be produced according to the setting method of the present invention. The electrode heads 32 of these electrode needles have different bending directions and different bending angles (the bending direction and angle are based on the angle between the needle head 32 and the electrode handle 1), and the electrode head 3 is integrally formed. Once produced, the electrode head 3 cannot be bent a second time. During each operation, the electrode needle of the model that best suits the patient's body cavity can be selected for the operation. It can better adapt to the cavity and maintain the good rigidity and precise angle of the tungsten needle, and the rigid tungsten needle can be used to achieve some actions such as pricking, plucking, pushing, and picking.

[0033] The three-dimensional needle-shaped electrode of the present invention can be bent at multiple angles and in multiple directions. The tungsten needle itself is bent and folded in multiple dimensions. Unlike a flat tungsten needle, it can better adapt to the cavity. At the same time, unlike a flexible tungsten needle, it maintains the good rigidity and precise angle of the tungsten needle. It can not only better implement delicate surgery, but also take into account the doctor's surgical requirements, and use the rigid tungsten needle to achieve some actions such as pricking, plucking, pushing, and picking.

[0034] Embodiment 2: Figure 1 , 2The figure is only one embodiment of the present invention, a three-dimensional needle-shaped electrode, comprising an electrode handle 1, an electrode rod 2 arranged at the end of the electrode handle 1, and an electrode head 3 arranged at the end of the electrode rod 2 away from the electrode handle 1, the electrode head 3 comprises an arc portion 31, a needle head 32 and a connecting portion 33 for connecting the arc portion 31 and the needle head 32, the connecting portion 33 comprises an intermediate piece 331, a first connecting ring 332 for connecting to the arc portion 31 and a second connecting ring 333 for connecting to the needle head 32 A first limiting protrusion is provided on the inner side of the first connecting ring 332, a second limiting protrusion 334 is provided on the inner side of the second connecting ring 333, a first protrusion column 311 is provided at the end of the arc portion 41 close to the connecting portion 44, and a first groove 312 for sliding of the first limiting protrusion is provided on the first protrusion column 311, and a second protrusion column 321 is provided at the end of the needle head 32 close to the connecting portion 33, and a second groove 322 for sliding of the second limiting protrusion 334 is provided on the second protrusion column 321.

[0035] In the present invention, the electrode handle 1 is convenient for medical staff to hold, and the electrode rod 2 is convenient for powering the electrode head 3. The electrode head 3 is the part that penetrates into the patient's tissue, which is convenient for performing some minimally invasive surgeries.

[0036] The electrode head 3 is an important part, and the electrode head 3 includes an arc portion 31, a needle head 32, and a connecting portion 33 for connecting the arc portion 31 and the needle head 32. The connecting portion 33 includes an intermediate piece 331, a first connecting ring 332 for connecting to the arc portion 31, and a second connecting ring 333 for connecting to the needle head 32. The needle head 32 is connected to the arc portion 31 through the connecting portion 33. The needle head 32 is connected to the first connecting ring 332 of the connecting portion 33, and the arc portion 31 is connected to the second connecting ring 333 of the connecting portion 33.

[0037] It should be noted that the angle between the planes where the first connecting ring 332 and the second connecting ring 333 of the connecting portion 33 are located ranges from 1° to 89°. In fact, the axial section of the connecting portion 33 is a right-angled trapezoid, so a certain angle is formed between the needle head 32 and the arc portion 31. In addition, the arc portion 31 itself is also curved, so the needle head 32 can be bent, which is different from the existing straight needle shape and can adapt to different cavities.

[0038] How the electrode head 3 is bent, connected and fixed, the first connection ring 332 is provided with a first limiting protrusion inside, the second connection ring 333 is provided with a second limiting protrusion 334 inside, the arc portion 41 is provided with a first protrusion column 311 at the end close to the connection portion 44, the first protrusion column 311 is provided with a first groove 312 for the first limiting protrusion to slide, the needle head 32 is provided with a second protrusion column 321 at the end close to the connection portion 33, the second protrusion column 321 is provided with a second groove 322 for the second limiting protrusion 334 to slide. By rotating the connection portion 33, the first limiting protrusion slides in the first groove 312, and the bending direction of the electrode head 3 can be adjusted.

[0039] In particular, the first limiting protrusion and the first groove 312 are over-fitted, and the second limiting protrusion 334 and the second groove 322 are also over-fitted, ensuring the stable connection and fixation of the arc portion 31, the needle head 32 and the connecting portion 33, and preventing the electrode head 3 from being accidentally bent and deformed to cause accidental injury. This is different from the flexible tungsten needle, and the tungsten needle has good rigidity and precise angle, which can not only better implement delicate surgery, but also take into account the doctor's surgical requirements, and use the rigid tungsten needle to achieve some actions such as pricking, pulling, pushing, and picking.

[0040] Embodiment three, as Figure 3 As shown, it is still one of the embodiments of the present invention. The electrode head 3 of a three-dimensional needle-shaped electrode of the present invention can have many bending directions. The number of the connecting parts 33 is at least one, and the bending directions of the multiple connecting parts 33 can be different. That is to say, a plurality of connecting parts 33 connected in sequence are arranged between the needle head 32 and the arc-shaped part 31, and the multiple connecting parts 33 can form bending adjustments of the needle head 32 in multiple directions by rotating, and even the entire electrode head 3 can form an S-shaped bend or even other multi-arc bends to match more complex surgical cavities.

[0041] Embodiment 4, as Figures 1 to 3 As shown, it is still one of the embodiments of the present invention. In order to make the three-dimensional needle-shaped electrode of the present invention more practical and stable, and the audience can operate it independently, the present invention also has the following designs:

[0042] First, the outer diameter of the first protruding column 311 is equal to the inner diameter of the first connecting ring 332, which facilitates the first protruding column 311 to extend into the first connecting ring 332. Similarly, the outer diameter of the second protruding column 321 is equal to the inner diameter of the second connecting ring 333, which facilitates the second protruding column 321 to extend into the second connecting ring 333.

[0043] In addition, the electrode handle 1 is provided with a raised pattern 11 to prevent the electrode handle 1 from accidentally sliding and causing surgical injuries when the electrode handle 1 is held. The electrode rod 2 is a conductive part, generally a copper alloy part, and finally the electrode head 3 is a tungsten part.

[0044] Furthermore, the bending angle of the arc portion 31 ranges from 60° to 150°. Generally speaking, the overall bending of the arc portion 31 is slightly greater than 90°, which is convenient for forming a hook shape, but is not limited to the hook shape.

[0045] Of course, the number of the first limiting protrusion is at least one, and the number of the second limiting protrusion 334 is at least one, so as to ensure the connection stability of the electrode head 3.

[0046] Finally, the first connecting ring 332 and the second connecting ring 333 are both provided with angle marking grooves 335 on the outside, and the ends of the needle head 32 and the arc-shaped portion 31 close to the connecting portion 33 are both provided with angle marking scale lines 313. By checking the position of the angle marking grooves 335 on the angle marking scale lines 313, the rotation angle of the connecting portion 33 can be precisely adjusted and checked, thereby ensuring that the bending accuracy of the electrode head 3 is higher.

[0047] The three-dimensional needle-shaped electrode of the present invention can be bent at multiple angles and in multiple directions. The tungsten needle itself is bent and folded in multiple dimensions. Unlike a flat tungsten needle, it can better adapt to the cavity. At the same time, unlike a flexible tungsten needle, it maintains the good rigidity and precise angle of the tungsten needle. It can not only better implement delicate surgery, but also take into account the doctor's surgical requirements, and use the rigid tungsten needle to achieve some actions such as pricking, plucking, pushing, and picking.

[0048] The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A three-dimensional needle-shaped electrode, characterized in that: The invention comprises an electrode handle (1), an electrode rod (2) arranged at the end of the electrode handle (1), and an electrode head (3) arranged at an end of the electrode rod (2) away from the electrode handle (1); the electrode head (3) comprises an arc-shaped portion (31), a needle head (32), and a connecting portion (33) for connecting the arc-shaped portion (31) and the needle head (32); the electrode rod (2) is a conductive member, and the needle head (32) is a tungsten member; the connecting portion (33) comprises an intermediate member (331), a first connecting ring (332) for connecting to the arc-shaped portion (31), and a second connecting ring (333) for connecting to the needle head (32); the first connecting ring ( A first limiting protrusion is arranged on the inner side of the second connecting ring (332), a second limiting protrusion (334) is arranged on the inner side of the second connecting ring (333), a first protrusion column (311) is arranged at the end of the arc portion (31) close to the connecting portion (33), and a first groove (312) for sliding of the first limiting protrusion is arranged on the first protrusion column (311), and a second protrusion column (321) is arranged at the end of the needle head (32) close to the connecting portion (33), and a second groove (322) for sliding of the second limiting protrusion (334) is arranged on the second protrusion column (321); the bending angle range of the arc portion (31) is 60° to 150°.

2. A three-dimensional needle-shaped electrode according to claim 1, characterized in that: The included angle of the planes on which the first connecting ring (332) and the second connecting ring (333) of the connecting portion (33) are located ranges from 1° to 89°.

3. The three-dimensional needle-shaped electrode according to claim 1, characterized in that: The outer diameter of the first protruding column (311) is equal to the inner diameter of the first connecting ring (332), and the outer diameter of the second protruding column (321) is equal to the inner diameter of the second connecting ring (333).

4. The three-dimensional needle-shaped electrode according to claim 1, characterized in that: The number of the connecting portion (33) is at least one.

5. The three-dimensional needle-shaped electrode according to claim 1, characterized in that: The electrode handle (1) is provided with a raised pattern (11).

6. The three-dimensional needle-shaped electrode according to claim 1, characterized in that: The number of the first limiting protrusion is at least one.

7. The three-dimensional needle-shaped electrode according to claim 1, characterized in that: The number of the second limiting protrusion (334) is at least one.

8. The three-dimensional needle-shaped electrode according to claim 1, characterized in that: An angle marking groove (335) is provided on the outside of the first connecting ring (332) and the second connecting ring (333), and angle marking scale lines (313) are provided on the ends of the needle head (32) and the arc-shaped portion (31) close to the connecting portion (33).

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