A bipolar myoelectric signal acquisition electrode

Abstract

The utility model discloses a bipolar electromyographic signal acquisition electrode, comprising: an electrode assembly, comprising two parallel electrode wires, the electrode wires comprising contact parts and transmission parts respectively close to the two ends thereof, the contact parts being designed to be easily inserted into an experimental body when a force perpendicular to the transmission part itself is applied to the transmission part; a lead wire, comprising two parallel wire bundles, one end of each wire bundle being electrically connected to a transmission part, and the other end of the wire bundle being used to connect a subsequent device; a fixing assembly, comprising two parallel through holes, each through hole being used to fix and connect the transmission part of an electrode wire and the end of a wire bundle, and the electrode wire and the wire bundle being electrically connected inside the through hole. The distance between the electrode wires is fixed, and the operator only needs to press the fixing assembly to make the contact part of the electrode wire penetrate the experimental body, and at the same time make the fixing assembly fit the surface of the experimental body, so that the electrode wire can be inserted into the experimental body to a predetermined depth.

Description

Technical Field

[0001] The utility model relates to the field of myoelectric electrode needles, in particular to a bipolar myoelectric signal acquisition electrode. Background Art

[0002] Electromyographic signals are electrophysiological signals generated by muscle activity. The collection of electromyographic signals is usually achieved through surface electromyographic sensors or electromyographic needles.

[0003] Among them, the electromyoelectric needle needs to be inserted directly into the muscle tissue, which can provide more accurate muscle activity data. Moreover, the use of electromyoelectric needle is not limited to signal acquisition. It is also widely used in the medical field, especially in pain management and muscle function recovery. It can help relieve pain, reduce muscle tension, and promote local blood circulation by directly acting on deep muscles.

[0004] Currently, when the operator inserts the electromyographic needle into the experimental subject, it is necessary to ensure the insertion depth and the distance between the electromyographic needles, which places high demands on the operator's experience and physical strength. Utility Model Content

[0005] The utility model aims to provide a bipolar myoelectric signal acquisition electrode to solve the problem that the depth and position of the existing myoelectric needle inserted into the experimental body are difficult to control.

[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0007] A bipolar electromyographic signal acquisition electrode comprises: an electrode assembly, comprising two parallel electrode wires, wherein the electrode wires comprise contact portions and transmission portions respectively close to both ends thereof, wherein the contact portions are designed to be shaped so as to be easily inserted into an experimental body when a force perpendicular to the transmission portion itself is applied to the transmission portion; a lead wire, comprising two parallel wire bundles, wherein one end of each of the wire bundles is electrically connected to one of the transmission portions, and the other end of the wire bundles is used to connect to a subsequent device; and a fixing assembly, comprising two parallel through holes, wherein each of the through holes is used to fix the transmission portion of one of the electrode wires and the end of one of the wire bundles, and the electrode wire and the wire bundle are electrically connected inside the through hole.

[0008] Furthermore, the electrode assembly and the fixing assembly are both rigid, the transmission portion extends in a straight line direction, the fixing assembly is in a three-dimensional rectangular shape, and the long side of the fixing assembly is parallel to the transmission portion.

[0009] Furthermore, the contact portion includes a pointed end that is easy to penetrate into the test subject.

[0010] Furthermore, the contact portion extends along a straight line direction, and an angle of 15° to 180° is formed between the contact portion and the transmission portion.

[0011] Furthermore, the contact portion extends along a curved line, and the center of the curved line is located at an end of the fixing component away from the contact portion.

[0012] Furthermore, an adhesive layer is provided at one end of the fixing component away from the contact portion.

[0013] Furthermore, a first operating part and a second operating part are provided on the fixing component, the first operating part is located at one end close to the lead wire and at a side away from the contact part, the first operating part is a concave surface that fits the shape of a thumb, the second operating part is located at one end close to the contact part and at a side away from the contact part, and the second operating part is a boss that fits the shape of an index finger or a middle finger.

[0014] Furthermore, the electrode assembly is made of a conductive material, the surface of the transmission portion is coated with an insulating layer, and the fixing assembly is made of an insulating material.

[0015] Furthermore, the surface of the contact portion is coated with an insulating layer, and the insulating layer forms an exposed point at the tip of the contact portion or a position close to the tip.

[0016] Further, the exposure point is arranged at a position between 50% and 100% of the length of the contact portion.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] Provided is a bipolar electromyographic signal acquisition electrode, in which the distance between the electrode wires used is fixed, and the operator only needs to press a fixing component to make the contact portion of the electrode wire pierce an experimental body, and at the same time make the fixing component fit the surface of the experimental body, so that the electrode wire can be inserted into the experimental body to a predetermined depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 A perspective view of a first embodiment of the present utility model;

[0021] Figure 2 It is a plan view of the second embodiment of the utility model;

[0022] Figure 3 A plan view of a third embodiment of the present utility model;

[0023] The numbers in the figure represent the following:

[0024] 1-electrode wire; 11-contact part; 12-transmission part; 13-tip; 2-lead wire; 21-wiring harness; 3-fixing component; 31-adhesive layer; 32-first operating part; 33-second operating part. DETAILED DESCRIPTION

[0025] 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.

[0026] In order to facilitate electrophysiological stimulation or collect electromyographic signals, a bipolar electromyographic signal collection electrode is provided below.

[0027] (First embodiment)

[0028] Combination Figure 1 , bipolar electromyographic signal acquisition electrodes include:

[0029] The electrode assembly includes two parallel electrode wires 1, wherein the electrode wire 1 includes a contact portion 11 and a transmission portion 12 respectively close to both ends thereof, and the contact portion 11 is designed to be in a shape that is easy to penetrate into the experimental body when a force perpendicular to the transmission portion 12 itself is applied to the transmission portion 12;

[0030] The lead wire 2 includes two parallel wire harnesses 21, one end of each wire harness 21 is electrically connected to a transmission unit 12, and the other end of the wire harness 21 is used to connect to a subsequent device;

[0031] The fixing assembly 3 includes two parallel through holes, each of which is used to fix the transmission portion 12 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.

[0032] (specifically)

[0033] The electrode assembly is rigid and is usually made of hard stainless steel. The contact portion 11 and the transmission portion 12 extend along a straight line, and an angle of 15-180° is formed between the contact portion 11 and the transmission portion 12. Figure 1 Take 90° as an example.

[0034] The connection node between the contact portion 11 and the transmission portion 12 may be located inside the fixing component 3 or outside the fixing component 3 .

[0035] The contact part 11 includes a tip 13 that is easy to penetrate into the experimental subject, and is suitable for acute in vivo electromyography detection experiments. After the contact part 11 vertically penetrates the experimental subject, the transmission part 12 and the fixing component 3 are easy to fit the surface of the experimental subject.

[0036] The fixing component 3 is rigid and is usually made of hard insulating resin. The transmission part 12 is coated with an insulating layer to avoid interference during electrophysiological stimulation or collection of electromyographic signals.

[0037] The spacing, length and diameter of the contact parts 11 of the electrode wire 1 can be customized as needed. Usually, the spacing between the contact parts 11 is 1 mm, the length is 0.8 mm, and the diameter is 0.16 mm.

[0038] The fixing component 3 is in a three-dimensional rectangular shape, preferably a flat rectangle with rounded corners. The width of the fixing component 3 is slightly wider than the spacing between the electrode wires 1, usually 1.2 mm to 1.6 mm. The length of the fixing component 3 is 1 mm to 2 mm.

[0039] (Preferably)

[0040] The contact portion 11 is coated with an insulating layer, and the insulating layer forms an exposure point at the tip 13 of the contact portion 11 or a position close to the tip 13. The exposure point is usually set at the tip 13, and can also be set at a position between 50% and 100% of the length of the contact portion 11, that is, a point between 0.4 mm and 0.8 mm.

[0041] After the contact part 11 is inserted into the experimental subject, the electromyographic signal of the contact exposure point is recognized and recorded by the acquisition device through the lead wire 2, or, after the electrode wire 1 is inserted into the experimental subject, the stimulation signal of the stimulation device to the muscle is transmitted to the electrode wire 1 through the lead wire 2 to complete the stimulation of the experimental subject.

[0042] (Second embodiment)

[0043] In order to facilitate the operator to insert the contact portion 11 of the electrode wire 1 into the interior of the experimental body, the second embodiment is provided below. Figure 2 The difference between the second embodiment and the first embodiment is that:

[0044] The transmission portion 12 extends along a straight line, and the contact portion 11 extends along a curve, wherein the center of the curve is located at an end of the fixing component 3 away from the contact portion 11 .

[0045] (Preferably)

[0046] An adhesive layer 31 is provided at one end of the fixing component 3 away from the contact portion 11 , and the adhesive layer 31 is used to adhere to the surface of the experimental object.

[0047] This design allows the operator to stick the end of the fixing component 3 away from the contact portion 11 on the surface of the experimental subject, and then press the other end of the fixing component 3 to make the fixing component 3 and the contact portion 11 perform a circular motion. During the process of the tip 13 of the contact portion 11 piercing the experimental subject, the contact portion 11 always moves along the moving path of its own tip 13, thereby reducing the pain of the experimental subject.

[0048] (Third Embodiment)

[0049] In order to facilitate the operator to pull the contact portion 11 of the electrode wire 1 out of the interior of the experimental body, the third embodiment is provided below. Figure 3 The difference between the third embodiment and the second embodiment is that:

[0050] A first operating portion 32 and a second operating portion 33 are respectively provided at both ends of one side of the fixing component 3. The first operating portion 32 is located at one end close to the lead wire 2 and on a side away from the contact portion 11. The first operating portion 32 is a concave surface that is recessed inward and fits the shape of a thumb. The second operating portion 33 is located at one end close to the contact portion 11 and on a side away from the contact portion 11. The second operating portion 33 is a boss that protrudes outward and fits the shape of an index finger or a middle finger.

[0051] The operator inserts his / her thumb into the first operating part 32, and then uses his / her index finger or middle finger to hold the second operating part 33, and then moves the second operating part 33 in a direction away from the experimental subject to pull out the contact part 11. During the process of pulling out the contact part 11, the tip 13 of the contact part 11 always moves along the path of piercing the experimental subject, thereby reducing the pain of the experimental subject.

[0052] 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 myoelectric signal acquisition electrode, characterized in that: include: The electrode assembly comprises two parallel electrode wires, wherein the electrode wires comprise contact portions and transmission portions respectively close to both ends thereof, wherein the contact portions are designed to be shaped to be easy to penetrate into the experimental body when a force perpendicular to the transmission portions is applied to the transmission portions; A lead wire, comprising two parallel wire bundles, one end of each of the wire bundles being electrically connected to one of the transmission parts, and the other end of the wire bundle being used to connect to a subsequent device; The fixing assembly comprises two parallel through holes, each of which is used to fix the transmission part of one of the electrode wires and the end of one of the wire harnesses, and to electrically connect the electrode wire and the wire harness inside the through hole.

2. A bipolar myoelectric signal acquisition electrode according to claim 1, characterized in that: The electrode assembly and the fixing assembly are both rigid, the transmission portion extends in a straight line direction, the fixing assembly is in a three-dimensional rectangular shape, and the long side of the fixing assembly is parallel to the transmission portion.

3. A bipolar myoelectric signal acquisition electrode according to claim 2, characterized in that: The contact portion includes a pointed end that is easily inserted into a subject.

4. A bipolar myoelectric signal acquisition electrode according to claim 3, characterized in that: The contact portion extends along a straight line, and an angle of 15° to 180° is formed between the contact portion and the transmission portion.

5. A bipolar myoelectric signal acquisition electrode according to claim 3, characterized in that: The contact portion extends along a curved line, and the center of the curved line is located at an end of the fixing component away from the contact portion.

6. A bipolar myoelectric signal acquisition electrode according to claim 5, characterized in that: An adhesive layer is disposed at one end of the fixing component away from the contact portion.

7. A bipolar myoelectric signal acquisition electrode according to claim 6, characterized in that: The fixing component is provided with a first operating part and a second operating part, the first operating part is located at one end close to the lead wire and at a side away from the contact part, the first operating part is a concave surface that fits the shape of a thumb, the second operating part is located at one end close to the contact part and at a side away from the contact part, and the second operating part is a boss that fits the shape of an index finger or a middle finger.

8. A bipolar myoelectric signal acquisition electrode according to claim 3, characterized in that: The electrode assembly is a conductive material, the surface of the transmission part is coated with an insulating layer, and the fixing assembly is an insulating material.

9. A bipolar myoelectric signal acquisition electrode according to claim 8, characterized in that: The surface of the contact portion is coated with an insulating layer, and the insulating layer forms an exposed point at the tip of the contact portion or a position close to the tip.

10. A bipolar myoelectric signal acquisition electrode according to claim 9, characterized in that: The exposure point is disposed at a position between 50% and 100% of the length of the contact portion.

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