Bipolar hook-shaped electrode probe

Abstract

The utility model discloses a bipolar electrode probe, comprising: an electrode assembly comprising two parallel electrode wires, each electrode wire comprising a contact portion and a transmission portion which are respectively close to two ends of the electrode wire, the contact portion being designed to be in a shape capable of picking up a nerve bundle; and the lead wire comprises two parallel wire harnesses, one end of each wire harness is electrically connected with one transmission part, and the other end of each wire harness is used for being connected with post-stage equipment. The nerve tract is picked up through the contact part extending into the lower part of the skin, so that the nerve tract is connected with a post-stage device through a lead wire, and nerve tract damage caused when the nerve tract is contacted by means of implantation, adhesion or puncture and the like is avoided.

Description

Technical Field

[0001] The utility model relates to the field of biological electrodes, in particular to a bipolar hook-shaped electrode probe. Background Art

[0002] The electrode probe is used to be inserted into the neural tissue to collect the action potential of neurons. The collected weak bioelectric signals are further analyzed and interpreted after amplification, filtering and digitization, so as to study the function and activity pattern of neurons.

[0003] The electrode probe needs to have good biocompatibility and will not damage biological tissues or induce immune responses. Most existing electrode probes contact nerve bundles through implantation, adhesion or puncture, which can easily cause damage to the nerve bundles. Utility Model Content

[0004] The utility model aims to provide a bipolar hook-shaped electrode probe to solve the problem that the nerve bundle is easily damaged during the process of the electrode probe contacting the nerve bundle.

[0005] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0006] A bipolar electrode probe, characterized in that it includes: an electrode assembly, including two parallel electrode wires, the electrode wire including a contact portion and a transmission portion respectively close to its two ends, wherein the contact portion is designed to be shaped to be able to provoke a nerve bundle; a lead wire, including two parallel wire bundles, one end of each of the wire bundles is electrically connected to one of the transmission portions, and the other end of the wire bundle is used to connect to a subsequent device.

[0007] Further, the contact portion is cylindrical, and an end of the contact portion away from the transmission portion forms a ball head with a diameter larger than that of the contact portion.

[0008] Further, the contact portion is in a truncated cone shape, the diameter of the contact portion gradually decreases in a direction away from the transmission portion, and one end of the contact portion away from the transmission portion forms a ball head with a diameter equal to or greater than that of the contact portion.

[0009] Further, the contact portion is bent into a hook shape.

[0010] Furthermore, the contact portion is in the shape of an arc with a central angle of 90° to 180°.

[0011] Furthermore, an end of the contact portion away from the transmission portion forms a ball head, and a diameter of the ball head is greater than a diameter of the contact portion.

[0012] Furthermore, an end of the contact portion away from the transmission portion forms a ball head, a portion of the contact portion close to the ball head has a diameter that gradually decreases, and the diameter of the ball head is equal to or greater than a diameter of the contact portion.

[0013] Furthermore, the electrode wire is coated with an insulating layer at the parts other than the ball head and the contact part. Furthermore, it also includes a fixing component, which includes two parallel through holes, each of which is used to fix the transmission part of one electrode wire and the end of one wire harness, and the electrode wire and the wire harness are electrically connected inside the through hole; the fixing component is a rotating body, the diameter of one end of the fixing component close to the contact part is smaller than the other end of the fixing component, and the end of the fixing component close to the contact part forms a first end face perpendicular to the axis of the fixing component, and the diameter of the first end face is greater than the maximum distance between the two parallel electrode wires.

[0014] Further, the fixing assembly includes a fixing platform and a fixing sleeve, both of which are rotating bodies and are detachably coaxially connected, wherein the through hole is formed on the fixing platform, and the fixing sleeve is sleeved on the outside of the wiring harness.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] Provided is a bipolar electrode probe, which can provoke or directly touch a nerve bundle by probing into a contact portion under the skin, so that the nerve bundle is connected to a subsequent device through a lead wire, thereby avoiding accidental damage to surrounding tissues during nerve surgery detection or stimulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0019] Figure 2 This is a three-dimensional diagram of the embodiment of the utility model after the fixing sleeve is hidden;

[0020] Figure 3 A three-dimensional diagram of a fixing sleeve according to an embodiment of the utility model;

[0021] The numbers in the figure represent the following:

[0022] 1-electrode wire; 11-contact part; 12-ball head; 13-transmission part; 2-lead wire; 21-wire harness; 3-fixing assembly; 31-fixing platform; 32-fixing sleeve. DETAILED DESCRIPTION

[0023] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to better stimulate or record the nerve bundle and avoid damage to the nerve bundle as much as possible during the stimulation or recording process, a bipolar electrode probe is provided below.

[0025] Figure 1 This is a stereogram of the electrode probe, combined with Figure 1 .

[0026] The electrode probe includes:

[0027] The electrode assembly includes two parallel electrode wires 1, wherein the electrode wire 1 includes a contact portion 11 and a transmission portion 13 respectively close to both ends thereof, wherein the contact portion 11 is designed to be shaped to be able to stir up a nerve bundle;

[0028] The lead wire 2 includes two parallel wire bundles 21, one end of each wire bundle 21 is electrically connected to a transmission part 13, and the other end of the wire bundle 21 is used to connect to a subsequent device (such as a bioelectric signal collector or a bioelectric stimulation generator).

[0029] The working principle of the first embodiment is as follows: the electrode wire 1 is inserted under the skin to provoke the nerve bundle, and then the lead wire 2 is used to give bioelectric stimulation to the nerve bundle or collect the bioelectric signal of the nerve bundle, which is suitable for acute in vitro peripheral nerve bundle signal recording or electrical stimulation.

[0030] (In one embodiment)

[0031] The contact part 11 is in the shape of a spherical head, and the diameter of the contact part 11 is 2.3 mm. The contact part 11 lifts and hooks the nerve bundle through the curved surface formed by the spherical surface of the contact part 11 and the cylindrical surface of the transmission part 13 .

[0032] (In one embodiment)

[0033] The contact part 11 is in the shape of a straight rod with a diameter of 0.8-1.2 mm, and a ball head 12 is formed at one end of the contact part 11 away from the transmission part 13 with a diameter of 2.3 mm. The contact part 11 lifts and hooks the nerve bundle through the curved surface formed between its own cylindrical surface and the spherical surface of the ball head 12.

[0034] (In one embodiment, in combination Figure 1 , Figure 2 )

[0035] The contact portion 11 is bent into a hook shape with a diameter of 1.2 mm, and a ball head 12 is formed at one end of the contact portion 11 away from the transmission portion 13 with a diameter of 2.3 mm. The hook-shaped design makes it easy for the contact portion 11 to lift and fix the nerve bundle, and the design of the ball head 12 prevents the contact portion 11 from harming the experimental subject during the process of lifting the nerve bundle.

[0036] The contact portion 11 is in the shape of an arc with a central angle of 90° to 180°, preferably 90°, 100°, and 180°. This design allows the nerve bundle to enter the center of the circle formed by the contact portion 11, so that the contact portion 11 is firmly connected to the nerve bundle.

[0037] The diameter of the contact portion 11 close to the ball head 12 gradually decreases. This design allows the diameter of the ball head 12 to be smaller than or equal to the diameter of the electrode wire 1 itself, thereby preventing the diameter of the ball head 12 from being too large and hindering the electrode wire 1 from penetrating under the skin; the diameter of the ball head 12 can also be larger than the diameter of the electrode wire 1 itself.

[0038] The transmission part 13 is coated with an insulating layer. This design allows the subsequent equipment to be electrically connected to the nerve bundle through the ball head 12, and the subsequent equipment cannot perform collection or stimulation on the nerve bundle through the transmission part 13, avoiding the collection of erroneous signals or the giving of erroneous stimulation.

[0039] (on the other hand)

[0040] The distance between the two parallel electrode wires 1 can be customized as needed, preferably 5 mm.

[0041] In order to constrain the distance between the two parallel electrode wires 1, the electrode probe further comprises:

[0042] The fixing assembly 3 includes two parallel through holes, each of which is used to fix the transmission portion 13 of an electrode wire 1 and the end of a wire harness 21, and to electrically connect the electrode wire 1 and the wire harness 21 inside the through hole.

[0043] The fixing component 3 is used to be held by hand or clamped by a machine. When the fixing component 3 is moved, the motor component is driven to move, so that the electrode wire 1 penetrates under the skin to provoke the nerve bundle.

[0044] The fixing component 3 is a rotating body, and the diameter of one end of the fixing component 3 close to the contact portion 11 is smaller than the other end thereof. This design increases the diameter of the portion of the fixing component 3 held in the hand, thereby improving the comfort of the fixing component 3 when held in the hand.

[0045] One end of the fixing component 3 close to the contact portion 11 forms a first end surface perpendicular to the axis of the fixing component 3 , and the diameter of the first end surface is greater than the maximum distance between two parallel electrode wires 1 . This design allows the electrode wire 1 and the fixing component 3 to be firmly connected.

[0046] Figure 2 This is a three-dimensional picture of the electrode probe after the fixing sleeve 32 is hidden. Figure 3 is a three-dimensional diagram of the fixed sleeve 32, combined with Figure 2 , Figure 3 .

[0047] The fixing assembly 3 includes a fixing table 31 and a fixing sleeve 32, both of which are rotating bodies and are coaxially connected, wherein a through hole is formed on the fixing table 31 so that the fixing table 31 fixes and connects the electrode wire 1 and the wiring harness 21, and the fixing sleeve 32 is sleeved on the outside of the wiring harness 21, and the fixing table 31 and the fixing sleeve 32 are plugged or spirally connected.

[0048] The fixing table 31 is designed to have sufficient mechanical strength and stability for firmly connecting and supporting the electrode wire 1 and the wire harness 21, ensuring that the electrode wire 1 maintains the correct position and angle during operation. Specifically, the diameter of one end of the fixing table 31 close to the contact portion 11 is smaller than that of the other end thereof, and the other end of the fixing table 31 is coaxially connected with a cylindrical plug, the diameter of the plug is smaller than the diameter of the fixing table 31, and a step surface is formed between the fixing table 31 and the plug.

[0049] The fixing sleeve 32 is a structure assembled on the end of the fixing platform 31 away from the electrode wire 1, and is used to extend the effective length of the fixing platform 31 and increase its operating range and flexibility. Specifically, the fixing sleeve 32 is cylindrical in shape, the inner diameter of the fixing sleeve 32 is equal to the outer diameter of the plug column, the outer diameter of the fixing sleeve 32 is equal to the outer diameter of the fixing platform 31, and the length of the fixing sleeve 32 is preferably 100 mm.

[0050] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A bipolar electrode probe, characterized in that: include: The electrode assembly includes two parallel electrode wires, wherein the electrode wires include contact portions and transmission portions respectively close to both ends thereof, wherein the contact portions are designed to be shaped to be able to stir up a nerve bundle; The lead wire comprises two parallel wire bundles, one end of each wire bundle is electrically connected to one of the transmission parts, and the other end of the wire bundle is used to connect to a subsequent device.

2. A bipolar electrode probe according to claim 1, characterized in that: The contact portion is cylindrical, and one end of the contact portion away from the transmission portion forms a spherical head having a diameter greater than that of the contact portion.

3. A bipolar electrode probe according to claim 1, characterized in that: The contact portion is in a truncated cone shape, a diameter of the contact portion gradually decreases in a direction away from the transmission portion, and an end of the contact portion away from the transmission portion forms a ball head with a diameter equal to or greater than that of the contact portion.

4. A bipolar electrode probe according to claim 1, characterized in that: The contact portion is bent into a hook shape.

5. A bipolar electrode probe according to claim 4, characterized in that: The contact portion is in the shape of an arc with a central angle of 90° to 180°.

6. A bipolar electrode probe according to claim 4, characterized in that: An end of the contact portion away from the transmission portion forms a ball head, and a diameter of the ball head is greater than a diameter of the contact portion.

7. A bipolar electrode probe according to claim 4, characterized in that: An end of the contact portion away from the transmission portion forms a ball head, a portion of the contact portion close to the ball head has a diameter that gradually decreases, and the diameter of the ball head is equal to or greater than the diameter of the contact portion.

8. A bipolar electrode probe according to any one of claims 2, 3, 6 and 7, characterized in that: The electrode wire is coated with an insulating layer at a portion other than the ball head and the contact portion.

9. A bipolar electrode probe according to any one of claims 1 to 7, characterized in that: It also includes a fixing assembly, the fixing assembly includes two parallel through holes, each of the through holes is used to fix the transmission part of one of the electrode wires and an end of the wire harness, and the electrode wire and the wire harness are electrically connected inside the through hole; The fixed component is a rotating body, and the diameter of one end of the fixed component close to the contact part is smaller than the other end of the fixed component. The end of the fixed component close to the contact part forms a first end face perpendicular to the axis of the fixed component, and the diameter of the first end face is greater than the maximum distance between the two parallel electrode wires.

10. A bipolar electrode probe according to claim 9, characterized in that: The fixing assembly includes a fixing platform and a fixing sleeve, wherein the fixing platform and the fixing sleeve are both rotating bodies and are detachably coaxially connected, wherein the through hole is formed on the fixing platform, and the fixing sleeve is sleeved on the outside of the wiring harness.

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