CN216090511U - Bioelectric signal probe and assembly thereof - Google Patents
Bioelectric signal probe and assembly thereof Download PDFInfo
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- CN216090511U CN216090511U CN202122292104.2U CN202122292104U CN216090511U CN 216090511 U CN216090511 U CN 216090511U CN 202122292104 U CN202122292104 U CN 202122292104U CN 216090511 U CN216090511 U CN 216090511U
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Abstract
The utility model relates to a bioelectric signal probe and a component thereof, wherein the bioelectric signal probe comprises a probe body and a metal anode, wherein the probe body comprises a metal base material and a metal coating, and the metal coating is attached to the outer surface of the metal base material and used for sealing the metal base material; the probe body is electrically connected with the metal anode, and the activity of the metal anode is stronger than that of the metal substrate and the metal coating; or the bioelectrical signal probe further comprises an external power supply, the probe body is electrically connected with the negative electrode of the external power supply, and the metal anode is electrically connected with the positive electrode of the external power supply. The bioelectrical signal probe effectively improves the corrosion resistance through the metal coating and the cathodic protection. The present invention also relates to an assembly including a bioelectrical signal probe, in which the bioelectrical signal probe can be electrically connected to a circuit board stably without soldering.
Description
Technical Field
The utility model relates to the technical field of bioelectric signal processing, in particular to a bioelectric signal probe and a component thereof.
Background
When the bioelectrical signal probe made of metal is used for collecting an electric signal of a human body, the bioelectrical signal probe can be directly contacted with the skin, and the bioelectrical signal probe can also be indirectly contacted with the skin through coupling media such as hydrogel and conductive paste. However, when the bioelectric signal probe is in direct contact with the skin, sweat generated by the skin is weakly acidic, and the bioelectric signal probe is corroded; when the bioelectric signal probe indirectly contacts with the skin through the coupling medium, in order to ensure the conductivity of the coupling medium, the coupling medium is generally electrolyte with a certain concentration, on one hand, the coupling medium can corrode the bioelectric signal probe, and on the other hand, skin excreta can gradually permeate and mix into the coupling medium to corrode the bioelectric signal probe, so that the effect of acquiring the electric signal can be reduced, and the skin can be stimulated when the rusty substance contacts with the skin, even allergy is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a bioelectrical signal probe having excellent corrosion resistance and an assembly thereof.
A bioelectrical signal probe comprises a probe body and a metal anode, wherein the probe body comprises a metal base material and a metal coating, and the metal coating is attached to the outer surface of the metal base material and used for sealing the metal base material;
the probe body is electrically connected with the metal anode, and the activity of the metal anode is stronger than that of the metal substrate and the metal coating;
or the bioelectrical signal probe further comprises an external power supply, the probe body is electrically connected with the negative electrode of the external power supply, and the metal anode is electrically connected with the positive electrode of the external power supply.
In one embodiment, when the activity of the metal anode is stronger than the activity of the metal substrate and the metal coating, the metal anode includes at least one of a magnesium metal anode, an aluminum metal anode, a manganese metal anode, a zinc metal anode, and a chromium metal anode.
In one embodiment, when the bioelectrical signal probe further comprises an external power source, the metal anode comprises at least one of a magnesium metal anode, an aluminum metal anode, a manganese metal anode, a zinc metal anode, a chromium metal anode, an iron metal anode, and a tin metal anode.
In one embodiment, when the activity of the metal anode is stronger than the activity of the metal substrate and the metal plating layer, the probe body is assembled and connected with the metal anode, and at least part of the surface of the probe body is attached to the metal anode.
In one embodiment, when the activity of the metal anode is stronger than the activity of the metal substrate and the metal plating layer, the probe body is provided with a cavity, and the metal anode is located in the cavity.
In one embodiment, when the activity of the metal anode is stronger than the activity of the metal substrate and the metal coating, the metal anode and the probe body are arranged at intervals, and the bioelectrical signal probe comprises a lead for connecting the metal anode and the probe body.
In one embodiment, the metal plating layer comprises a first plating layer attached to the outer surface of the metal substrate, the first plating layer comprises any one of a first nickel layer and a first platinum layer, the thickness of the first nickel layer is 0.01mm-0.03mm, and the thickness of the first platinum layer is 0.008mm-0.012 mm.
In one embodiment, the metal plating layer further comprises a first copper layer and a second plating layer which are sequentially attached to the outer surface of the first plating layer, the second plating layer comprises any one of a second nickel layer and a second platinum layer, the thickness of the first copper layer is 0.008mm-0.015mm, the thickness of the second nickel layer is 0.01mm-0.03mm, and the thickness of the second platinum layer is 0.008mm-0.012 mm.
In one embodiment, the metal plating layer further comprises a second copper layer and a zinc-tin-copper ternary alloy layer which are sequentially attached to the outer surface of the first plating layer, wherein the thickness of the second copper layer is 0.008mm-0.015mm, and the thickness of the zinc-tin-copper ternary alloy layer is 0.01mm-0.03 mm.
In the bioelectrical signal probe, on one hand, the metal substrate is sealed in the probe body through the metal coating, so that the metal substrate is isolated from harmful substances such as oxygen, water and the like; on the other hand, the probe body is electrically connected with the negative electrode of the external power supply, the metal anode is electrically connected with the positive electrode of the external power supply, so that the potential of the metal anode is higher than that of the metal substrate, or the probe body is electrically connected with the metal anode, so that the activity of the metal anode is higher than that of the metal substrate, and the metal substrate and the metal anode form a corrosion couple to form an anti-corrosion system, so that the metal anode is preferentially corroded and the metal substrate is protected as the negative electrode in the working process, and further, the bioelectrical signal probe has excellent anti-corrosion performance.
Therefore, when the electric signal of a human body is collected, the bioelectric signal probe can be directly contacted with the skin, and can also be indirectly contacted with the skin through coupling media such as hydrogel, conductive paste and the like.
An assembly comprises a spring piece, a circuit board and the bioelectric signal probe, wherein two ends of the spring piece are respectively and elastically abutted against the bioelectric signal probe and the circuit board, so that the circuit board is electrically connected with the bioelectric signal probe.
In the assembly provided by the utility model, the bioelectricity signal probe can form stable electrical connection with the circuit board, welding is not needed, and the connection mode is simple, detachable and replaceable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model:
FIG. 1 is a schematic structural view of a bioelectrical signal probe according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a bioelectrical signal probe according to a second embodiment of the present invention;
FIG. 3 is a schematic structural view of a bioelectrical signal probe according to a third embodiment of the present invention;
FIG. 4 is a schematic structural view of a bioelectrical signal probe according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural view of the assembly of the present invention.
In the figure: 10. a bioelectrical signal probe; 101. a probe body; 101a, a metal substrate; 101b, metal plating; 102. a metal anode; 103. a wire; 104. connecting an external power supply; 11. a spring plate; 12. a circuit board.
Detailed Description
The bioelectric signal probe and the components thereof provided by the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, a bioelectrical signal probe 10 according to a first embodiment of the present invention includes a probe body 101, where the probe body 101 includes a metal base material 101a and a metal plating layer 101b, and the metal plating layer 101b is attached to an outer surface of the metal base material 101a to seal the metal base material 101a, so as to isolate the metal base material 101a from harmful substances such as oxygen and water, thereby effectively improving the corrosion resistance of the bioelectrical signal probe 10.
Specifically, the metal substrate 101a includes at least one of a copper metal substrate, an aluminum metal substrate, a 316L stainless steel metal substrate, a 430 stainless steel metal substrate, a 304 stainless steel metal substrate, an SUS410 stainless steel metal substrate, an SUS430 stainless steel metal substrate, and an a3 steel metal substrate, so as to further improve the corrosion resistance of the bioelectrical signal probe 10. In one embodiment, the metal substrate 101a may be preferably at least one of a 430 stainless steel metal substrate, a SUS410 stainless steel metal substrate, a SUS430 stainless steel metal substrate, and an a3 steel metal substrate, so that the bioelectrical signal probe 10 has a magnetic conductive effect.
The metal plating layer 101b may be selected from a nickel layer, a platinum layer, a copper layer, an alloy layer, and the like, and the metal plating layer 101b may be a single-layer plating layer or a multi-layer plating layer.
In one embodiment, the metal plating layer 101b is a single-layer structure and includes a first plating layer attached to the outer surface of the metal substrate 101a, and the first plating layer includes any one of a first nickel layer or a first platinum layer. The first nickel layer is prepared by a common nickel electroplating process or a common chemical nickel plating process, the first platinum layer is prepared by a common platinum electroplating process, when the thickness of the first plating layer is too small, the crystal grains of the first plating layer cannot be well filled in gaps among the crystal grains of the metal base material 101a, and effective meshing cannot be formed, so that the bonding force between the first plating layer and the metal base material 101a is reduced, and when the thickness of the first nickel layer is too large, the cost is increased, and bubbling and falling can be caused due to the increase of internal stress. Therefore, when the first plating layer is a first nickel layer, the thickness of the first nickel layer is preferably 0.01mm to 0.03 mm; when the first plating layer is a first platinum layer, the thickness of the first platinum layer is 0.008mm-0.012 mm.
In an embodiment, when the metal plating layer 101b is a multilayer structure, the metal plating layer further includes a first copper layer and a second plating layer sequentially attached to an outer surface of the first plating layer, the second plating layer includes any one of a second nickel layer or a second platinum layer, a thickness of the first copper layer is 0.008mm to 0.015mm, a thickness of the second nickel layer is 0.01mm to 0.03mm when the second plating layer is the second nickel layer, and a thickness of the second platinum layer is 0.008mm to 0.012mm when the second plating layer is the second platinum layer.
In an embodiment, when the metal plating layer 101b has a multilayer structure, the metal plating layer further includes a second copper layer and a zinc-tin-copper ternary alloy layer sequentially attached to the outer surface of the first plating layer, the thickness of the second copper layer is 0.008mm to 0.015mm, and the thickness of the zinc-tin-copper ternary alloy layer is 0.01mm to 0.03 mm.
As shown in fig. 1, the bioelectrical signal probe further includes a metal anode 102 and an external power source 104, the probe body 101 is electrically connected to a negative electrode of the external power source 104 through a wire 103, and the metal anode 102 is electrically connected to a positive electrode of the external power source 104 through a wire 103.
The metal anode 102 may be a metal wire or a metal block, and may be removed and replaced. The metal anode 102 may enable the external power source 104, the metal substrate 101a and a corrosive medium (such as water) to form a complete current loop, and enable current to flow to reach the surface of the metal substrate 101a, thereby implementing cathodic protection on the metal substrate 101a, where the metal anode 102 may be at least one selected from a magnesium metal anode, an aluminum metal anode, a manganese metal anode, a zinc metal anode, a chromium metal anode, an iron metal anode, and a tin metal anode.
All power sources capable of generating direct current can be used as the external power source 104, such as a rectifier, a potentiostat, a solar cell, a generator, a wind turbine, a hot spot battery, and the like.
As shown in fig. 2, a bioelectrical signal probe according to a second embodiment of the present invention is different from the first embodiment in that the bioelectrical signal probe 10 does not include an external power source 104, the probe body 101 is electrically connected to the metal anode 102, and the activity of the metal anode 102 is stronger than the activity of the metal substrate 101a and the metal plating layer 101 b.
In this embodiment, the metal anode 102 is spaced apart from the probe body 101, and the metal anode 102 is electrically connected to the probe body 101 through a lead 103. Since the metal base material 101a and the metal plating layer 101b in the probe body 101 are both conductive, the probe body 101 and the metal anode 102 may be electrically connected by: the metal anode 102 and the metal plating layer 101b are connected by a wire 103, or the metal anode 102 and the metal substrate 101a are connected by a wire 103.
When the metal substrate 101a includes at least one of a copper metal substrate, a 316L stainless steel metal substrate, a 430 stainless steel metal substrate, a 304 stainless steel metal substrate, an SUS410 stainless steel metal substrate, an SUS430 stainless steel metal substrate, an a3 steel metal substrate, the metal anode 102 may be selected from at least one of a magnesium metal anode, an aluminum metal anode, a manganese metal anode, a zinc metal anode, a chromium metal anode, according to the reactivity of the metal; when the metal substrate 101a comprises an aluminum metal substrate, the metal anode 102 is selected from a magnesium metal anode.
As shown in fig. 3, a bioelectrical signal probe according to a third embodiment of the present invention is different from the probe according to the second embodiment in that the probe body 101 is provided with a cavity, and the metal anode 102 is located in the cavity.
Specifically, the metal anode 102 may be fixed in the cavity by welding, riveting, screwing or conductive adhesive, so that the probe body 101 and the metal anode 102 are electrically connected, and the metal anode 102 is exposed to the air. Preferably, the size of the metal anode 102 is matched with the size of the cavity, so that the metal anode 102 fills the cavity, and the metal anode 102 is flush with the surface of the probe body 101.
As shown in fig. 4, a bioelectrical signal probe according to a fourth embodiment of the present invention is different from the second embodiment in that the probe body 101 is assembled and connected to the metal anode 102, and the surface of the probe body 101 is attached to the metal anode 102.
The surface of the probe body 101 may be entirely attached to the metal anode 102, or may be partially attached to the metal anode 102. Since the metal plating layer 101b of the probe body 101 has conductivity, the metal anode 102 can be electrically connected to the probe body 101.
It is understood that the metal anode 102 may be fixed on the surface of the probe body by winding when it is a metal wire, and the metal anode 102 may be fixed on the surface of the probe body 101 by welding, riveting, screwing or conductive adhesive when it is a metal block.
In the above four embodiments, the probe body 101 is electrically connected to the negative electrode of the external power source 104, the metal anode 102 is electrically connected to the positive electrode of the external power source 104, so that the potential of the metal anode 102 is higher than that of the metal substrate 101a, or the metal anode 102 electrically connected to the probe body 101 is provided, so that the activity of the metal anode 102 is stronger than that of the metal substrate 101a, and thus the metal substrate 101a and the metal anode 102 form a corrosion couple to form an anti-corrosion system, so that the metal anode 102 is preferentially corroded during operation, and the metal substrate 101a is protected as the negative electrode, thereby the bioelectrical signal probe 10 has excellent anti-corrosion performance. Specifically, the bioelectrical signal probe 10 was subjected to a neutral salt spray test for 92 hours in accordance with GB/T10125-1997 salt spray test for Artificial atmosphere Corrosion test, and the test results showed that no corrosive substances were generated on the surface of the bioelectrical signal probe of each embodiment.
Therefore, when the electric signal of the human body is collected, the bioelectric signal probe 10 can be directly contacted with the skin, and the bioelectric signal probe 10 can also be indirectly contacted with the skin through coupling media such as hydrogel and conductive paste, so that no rust substance is generated on the surface of the bioelectric signal probe 10, the service life is long, the stability of the electric signal collecting effect can be ensured, and the skin cannot be stimulated to cause allergy.
In addition, when collecting the electrical signal of the human body, the bioelectrical signal probe 10 of the present invention may be electrically connected to the circuit board of the host device by soldering, crimping, or the like.
As shown in fig. 5, the present invention further provides an assembly, which includes a spring plate 11, a circuit board 12 and a bioelectrical signal probe 10, wherein two ends of the spring plate 11 respectively and elastically abut against the bioelectrical signal probe 10 and the circuit board 12, so that the circuit board 12 and the bioelectrical signal probe 10 are electrically connected.
Therefore, the bioelectrical signal probe 10 in the assembly is stably electrically connected with the circuit board 12 of the main device in a crimping mode without welding, and the connection mode is simple, detachable and replaceable.
Specifically, the electrical connection of the spring plate 11 is a pull-back spring connection or a belleville spring connection.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The bioelectrical signal probe is characterized by comprising a probe body and a metal anode, wherein the probe body comprises a metal base material and a metal coating, and the metal coating is attached to the outer surface of the metal base material and used for sealing the metal base material;
the probe body is electrically connected with the metal anode, and the activity of the metal anode is stronger than that of the metal substrate and the metal coating;
or the bioelectrical signal probe further comprises an external power supply, the probe body is electrically connected with the negative electrode of the external power supply, and the metal anode is electrically connected with the positive electrode of the external power supply.
2. The bioelectrical signal probe according to claim 1, wherein when the activity of the metal anode is stronger than the activity of the metal substrate and the metal plating layer, the metal anode comprises at least one of a magnesium metal anode, an aluminum metal anode, a manganese metal anode, a zinc metal anode, and a chromium metal anode.
3. The bioelectrical signal probe of claim 1, wherein when the bioelectrical signal probe further comprises an external power source, the metal anode comprises at least one of a magnesium metal anode, an aluminum metal anode, a manganese metal anode, a zinc metal anode, a chromium metal anode, an iron metal anode, and a tin metal anode.
4. The bioelectrical signal probe according to claim 1, wherein when the activity of the metal anode is stronger than the activity of the metal substrate and the metal plating layer, the probe body is assembled and connected with the metal anode, and at least a part of the surface of the probe body is attached to the metal anode.
5. The bioelectrical signal probe according to claim 1, wherein when the reactivity of the metal anode is stronger than the reactivities of the metal substrate and the metal plating layer, the probe body is provided with a cavity, and the metal anode is located in the cavity.
6. The bioelectrical signal probe according to claim 1, wherein when the reactivity of the metal anode is stronger than the reactivities of the metal substrate and the metal plating layer, the metal anode is spaced apart from the probe body, and the bioelectrical signal probe includes a lead connecting the metal anode and the probe body.
7. The bioelectrical signal probe as claimed in claim 1, wherein the metal plating layer comprises a first plating layer attached to an outer surface of the metal substrate, the first plating layer comprising any one of a first nickel layer having a thickness of 0.01mm to 0.03mm and a first platinum layer having a thickness of 0.008mm to 0.012 mm.
8. The bioelectrical signal probe according to claim 7, wherein the metal plating layer further comprises a first copper layer and a second plating layer sequentially attached to an outer surface of the first plating layer, the second plating layer comprises any one of a second nickel layer and a second platinum layer, a thickness of the first copper layer is 0.008mm to 0.015mm, a thickness of the second nickel layer is 0.01mm to 0.03mm, and a thickness of the second platinum layer is 0.008mm to 0.012 mm.
9. The bioelectrical signal probe according to claim 7, wherein the metal plating layer further comprises a second copper layer and a ternary alloy layer of zinc tin copper, which are sequentially attached to the outer surface of the first plating layer, the thickness of the second copper layer is 0.008mm to 0.015mm, and the thickness of the ternary alloy layer of zinc tin copper is 0.01mm to 0.03 mm.
10. An assembly, comprising a spring plate, a circuit board and the bioelectrical signal probe as claimed in any one of claims 1 to 9, wherein two ends of the spring plate are elastically abutted against the bioelectrical signal probe and the circuit board, respectively, so as to electrically connect the circuit board and the bioelectrical signal probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122292104.2U CN216090511U (en) | 2021-09-18 | 2021-09-18 | Bioelectric signal probe and assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122292104.2U CN216090511U (en) | 2021-09-18 | 2021-09-18 | Bioelectric signal probe and assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216090511U true CN216090511U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122292104.2U Active CN216090511U (en) | 2021-09-18 | 2021-09-18 | Bioelectric signal probe and assembly thereof |
Country Status (1)
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|---|---|
| CN (1) | CN216090511U (en) |
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2021
- 2021-09-18 CN CN202122292104.2U patent/CN216090511U/en active Active
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