A transcranial electrostimulation apparatus electrode connection assembly

Abstract

The utility model relates to the field of transcranial electrical stimulator, concretely relates to a transcranial electrical stimulator electrode connecting assembly. Including: the positioning cap of wearing on the head, is equipped with the positioning hole on the positioning cap to the region of waiting for stimulation, electrode seat, electrode seat installs on the positioning cap and is directly opposite the positioning hole, is equipped with the receiving hole of longitudinal through on the electrode seat, flexible liquid suction component, flexible liquid suction component is placed in the receiving hole, and one end of flexible liquid suction component extends out of the receiving hole and exposes from the skin side of positioning cap for with the skin of head is pasted together, electrode body, electrode body is placed in the receiving hole and is pasted together in the end of flexible liquid suction component far from the skin side, is equipped with the perforation on the electrode body, and electrode body and external circuit electrically connected, rubber plug, is equipped with the through -hole directly opposite with the perforation on the rubber plug. Can replace liquid suction component and can improve the comfort of wearing.

Description

Technical Field

[0001] This utility model relates to the field of transcranial electrical stimulators, specifically to an electrode connection assembly for a transcranial electrical stimulator. Background Technology

[0002] Transcranial electrical stimulation (tES) is a non-invasive brain stimulation technique that applies weak electrical currents to specific brain regions via scalp electrodes to modulate neuronal activity and thus influence brain function. Its core principle is to use electrical current to alter the membrane potential of neurons, thereby promoting or inhibiting neuronal excitability.

[0003] Transcranial electrical stimulation electrodes typically employ a fixed structure, which leads to inefficient disassembly when changing absorbent materials, and the lack of elastic cushioning in the electrode holder can cause discomfort when worn. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides an electrode connection assembly for a transcranial electrical stimulator, which facilitates the replacement of the liquid-absorbing component and improves wearing comfort.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A transcranial electrical stimulator electrode connection assembly, comprising: A positioning cap worn on the head, with positioning holes on the cap corresponding to the area to be stimulated; Electrode holder, the electrode holder is installed on the positioning cap and is directly opposite the positioning hole, the electrode holder is provided with a longitudinal through storage hole; A flexible absorbent component is placed in the storage hole, with one end of the flexible absorbent component extending out of the storage hole and protruding from the skin-contact side of the positioning cap for contact with the head skin. The electrode body is placed inside the receiving hole and attached to the end of the flexible liquid-absorbing component away from the skin. The electrode body has a perforation and is electrically connected to an external circuit. The rubber stopper has a through hole that is directly opposite the perforation. The rubber stopper includes a positioning seat placed in the receiving hole. The positioning seat abuts against the end of the electrode body away from the flexible liquid-absorbing component. A limiting flange is provided around the outer periphery of the positioning seat. An annular groove is provided on the side wall of the receiving hole. The limiting flange is embedded in the annular groove to achieve axial positioning of the rubber stopper relative to the electrode seat.

[0006] Current transcranial electrical stimulation (TCS) electrodes typically employ a fixed structure, with the electrode body and absorbent material directly embedded in the head-mounted device. Changing the absorbent material requires disassembling the electrode or the entire assembly, which is inefficient; the electrode holder lacks elastic cushioning, leading to discomfort; and the absorbent material is not securely positioned, easily shifting due to head movement and causing inaccurate stimulation placement. Furthermore, the conductive fluid needs repeated replenishment, easily contaminating the device during operation. There is an urgent need for an electrode connection component that supports rapid replacement, precise positioning, and improved comfort.

[0007] Furthermore, in one transcranial electrical stimulator electrode connection assembly of this application, a tapered surface is provided on the outer wall of the positioning seat near the electrode body. The upper end of the tapered surface extends to intersect with the outer surface of the limiting flange, and a chamfer is provided on the lower edge of the annular groove to match the tapered surface. The tapered surface allows for automatic centering when the rubber plug is inserted, thereby improving the installation efficiency of the rubber plug and electrode seat.

[0008] Furthermore, in the transcranial electrical stimulator electrode connection assembly of this application, the rubber plug further includes a limiting boss located on the outer side of the electrode seat end, the limiting boss being integrally disposed at the end of the positioning seat away from the electrode body. The limiting boss is engaged at the outer end of the electrode seat to prevent the rubber plug from being pushed in too deeply; the boss provides a force application point, facilitating manual insertion and removal of the rubber plug.

[0009] Furthermore, in one transcranial electrical stimulator electrode connection assembly of this application, the side wall of the electrode base is provided with a U-shaped groove. The upper end of the U-shaped groove extends to the end of the electrode base near the rubber plug and forms an opening. A wire is connected to the electrode body and passes through the U-shaped groove. The wire is led out through the U-shaped groove to avoid being squeezed and damaged by the edge of the electrode base. Furthermore, in one transcranial electrical stimulator electrode connection assembly of this application, an annular connection groove is provided on the outer wall of the electrode seat, and the positioning cap is placed in the annular connection groove corresponding to the edge of the positioning hole.

[0010] Furthermore, in this application, a transcranial electrical stimulator electrode connection assembly has an overall cylindrical electrode base, a cylindrical flexible liquid-absorbing component adapted to the receiving hole, and an annular electrode body adapted to the receiving hole. The cylindrical flexible liquid-absorbing component fits tightly against the annular electrode body, ensuring uniform diffusion of the conductive liquid.

[0011] As can be seen from the above technical solution, this utility model has the following beneficial effects: This invention provides an electrode connection assembly for a transcranial electrical stimulator. The method of use is as follows: The positioning cap is worn on the user's head. Due to the positioning hole, the flexible absorbent component, which is in contact with the scalp, is positioned directly over the area to be stimulated. Conductive fluid (such as saline solution) is injected into the flexible absorbent component through the through-hole and perforation, allowing the conductive fluid to electrically connect the scalp and the electrode. Therefore, the current generated by the external circuit can stimulate the user's scalp. When replacing the flexible absorbent component, simply remove the rubber stopper, remove the electrode and the flexible absorbent component sequentially from the storage hole, insert the new flexible absorbent component, and then place the electrode and the rubber stopper back into the electrode base. This design offers high ease of operation. The positioning function of the rubber stopper ensures that one end of the flexible absorbent component extends beyond the storage hole and remains in contact with the scalp. While ensuring electrical conductivity between the scalp and the electrode, the extended flexible absorbent component acts as a buffer between the electrode base and the scalp, improving comfort. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of an electrode connection assembly for a transcranial electrical stimulator according to Embodiment 1 of this application; Figure 2 This is an exploded schematic diagram of the electrode connection assembly of a transcranial electrical stimulator according to Embodiment 1 of this application; Figure 3 This is a cross-sectional view of an electrode connection assembly for a transcranial electrical stimulator according to Embodiment 2 of this application; Figure 4 This is an exploded schematic diagram of the electrode connection assembly of a transcranial electrical stimulator according to Embodiment 2 of this application.

[0013] In the diagram: 10 - positioning hole; 2-Electrode holder; 20-Receiving hole; 201-Annular groove; 21-U-shaped through groove; 22-Annular connecting groove; 3-Flexible liquid-absorbing component; 31-Connecting ring groove; 4-Electrode body; 40-Perforation; 41-Wire; 5-Rubber stopper; 50-Through hole; 51-Positioning seat; 511-Limiting flange; 512-Conical surface; 52-Limiting boss 6-Bracket; 61-Annular connecting part; 62-Extending protrusion. Detailed Implementation

[0014] Example 1 Combination Figure 1 , Figure 2 The electrode connection assembly of a transcranial electrical stimulator shown includes: A positioning cap worn on the head, with positioning holes 10 on the cap corresponding to the area to be stimulated; Electrode holder 2 is mounted on the positioning cap and faces the positioning hole 10. The electrode holder 2 is provided with a longitudinally penetrating storage hole 20. The flexible liquid-absorbing component 3 is placed in the storage hole 20. One end of the flexible liquid-absorbing component 3 extends out of the storage hole 20 and protrudes from the skin-contact side of the positioning cap to fit against the head skin. Electrode 4 is placed inside the receiving hole 20 and attached to the end of the flexible liquid-absorbing component 3 away from the skin. The electrode 4 is provided with a perforation 40 and is electrically connected to an external circuit. The rubber stopper 5 has a through hole 50 that is directly opposite to the perforation 40. The rubber stopper 5 includes a positioning seat 51 placed in the receiving hole 20. The positioning seat 51 abuts against the end of the electrode body 4 away from the flexible liquid absorption member 3. A limiting flange 511 is provided around the outer periphery of the positioning seat 51. An annular groove 201 is provided on the side wall of the receiving hole 20. The limiting flange 511 is embedded in the annular groove 201 to achieve axial positioning of the rubber stopper 5 relative to the electrode seat 2.

[0015] Based on the above structure, the principle of a transcranial electrical stimulator electrode connection assembly is as follows: The method of use is as follows: The positioning cap is worn on the user's head. Due to the positioning hole 10, the flexible absorbent component 3, which is in contact with the scalp, is positioned directly over the area to be stimulated. Conductive liquid (such as saline solution) is injected into the flexible absorbent component 3 through the through hole 50 and the perforation 40, allowing the conductive liquid to electrically connect the scalp and the electrode body 4. Therefore, the current generated by the external circuit can stimulate the user's scalp. To replace the flexible absorbent component 3, simply remove the rubber stopper 5, remove the electrode body 4 and the flexible absorbent component 3 sequentially from the storage hole 20, insert the new flexible absorbent component 3, and then place the electrode body 4 and the rubber stopper 5 back into the electrode base 2. This method offers high ease of operation. The positioning function of the rubber stopper 5 ensures that one end of the flexible absorbent component 3 extends beyond the storage hole 20 and is in contact with the scalp. While ensuring electrical conductivity between the scalp and the electrode body 4, the flexible absorbent component 3 extending beyond the storage hole 20 acts as a buffer between the electrode base 2 and the scalp, improving comfort.

[0016] In this embodiment, the flexible liquid-absorbing component 3 is a sponge.

[0017] In this embodiment, a tapered surface 512 is provided on the outer side wall of the positioning seat 51 near the electrode body 4. The upper end of the tapered surface 512 extends to intersect with the outer side of the limiting flange 511. A chamfer is provided on the lower edge of the annular groove 201 to match the tapered surface 512.

[0018] In this embodiment, the rubber plug 5 also includes a limiting boss 52 located on the outer side of the end of the electrode seat 2. The limiting boss 52 is integrally disposed on the end of the positioning seat 51 away from the electrode body 4.

[0019] In this embodiment, the side wall of the electrode holder 2 is provided with a U-shaped through groove 21. The upper end of the U-shaped through groove 21 extends to the end of the electrode holder 2 near the rubber plug 5 and is open. A wire 41 is connected to the electrode body 4 and the wire 41 passes through the U-shaped through groove 21.

[0020] In this embodiment, an annular connecting groove 22 is provided on the outer side wall of the electrode holder 2, and the positioning cap is placed in the annular connecting groove 22 corresponding to the edge of the positioning hole 10.

[0021] In this embodiment, the electrode holder 2 is cylindrical in shape, the flexible liquid absorption component 3 is cylindrical in shape to match the receiving hole 20, and the electrode body 4 is annular in shape to match the receiving hole 20.

[0022] Example 2 Based on Example 1, combined with Figure 3 and Figure 4 In this embodiment, the flexible liquid-absorbing component 3 in the transcranial electrical stimulator electrode connection assembly has a connecting ring groove 31 on its side wall. It also includes a bracket 6, which includes an annular connecting part 61 and an extending protrusion 62. The annular connecting part 61 is embedded in the connecting ring groove 31, and the extending protrusion 62 extends radially outward from one side of the annular connecting part 61 to the outside of the electrode seat 2. The bracket 6 is on the side of the positioning cap away from the skin. The extending protrusion 62 is placed in the U-shaped through groove 21.

[0023] In this embodiment, a bracket 6 is fitted onto the flexible liquid-absorbing component 3, and the bracket 6 engages with the annular connecting part 61 and the connecting annular groove 31 to form a replacement assembly. When removing the flexible liquid-absorbing component 3, the extended protrusion 62 is moved upward by hand, and the flexible liquid-absorbing component 3 can be removed from the electrode base 2 through the bracket 6. This further improves the efficiency of replacing the liquid-absorbing component 3.

[0024] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. An electrode connection assembly for a transcranial electrical stimulator, characterized in that, include: A positioning cap worn on the head, wherein the positioning cap has a positioning hole (10) corresponding to the area to be stimulated. Electrode holder (2), the electrode holder (2) is installed on the positioning cap and faces the positioning hole (10), and the electrode holder (2) is provided with a longitudinal through storage hole (20). A flexible liquid-absorbing component (3) is placed in a receiving hole (20). One end of the flexible liquid-absorbing component (3) extends out of the receiving hole (20) and protrudes from the skin-contact side of the positioning cap to fit against the head skin. Electrode body (4), the electrode body (4) is placed in the receiving hole (20) and attached to the end of the flexible liquid absorption member (3) away from the skin side, the electrode body (4) is provided with a perforation (40), and the electrode body (4) is electrically connected to an external circuit; The rubber stopper (5) has a through hole (50) opposite to the perforation (40). The rubber stopper (5) includes a positioning seat (51) placed in the receiving hole (20). The positioning seat (51) abuts against the end of the electrode body (4) away from the flexible liquid absorption member (3). The positioning seat (51) is surrounded by a limiting flange (511). The receiving hole (20) has an annular groove (201) on its side wall. The limiting flange (511) is embedded in the annular groove (201).

2. The electrode connection assembly for a transcranial electrical stimulator according to claim 1, characterized in that: The positioning seat (51) has a tapered surface (512) on the outer side wall near the electrode body (4). The upper end of the tapered surface (512) extends to intersect with the outer side of the limiting flange (511). The lower edge of the annular groove (201) has a chamfer that is compatible with the tapered surface (512).

3. The electrode connection assembly for a transcranial electrical stimulator according to claim 1, characterized in that: The rubber plug (5) also includes a limiting boss (52) located on the outer side of the end of the electrode seat (2), and the limiting boss (52) is integrally disposed on the end of the positioning seat (51) away from the electrode body (4).

4. The electrode connection assembly for a transcranial electrical stimulator according to claim 1, characterized in that: The side wall of the electrode holder (2) is provided with a U-shaped through groove (21). The upper end of the U-shaped through groove (21) extends to the end of the electrode holder (2) near the rubber plug (5) and is open. A wire (41) is connected to the electrode body (4) and the wire (41) passes through the U-shaped through groove (21).

5. The electrode connection assembly for a transcranial electrical stimulator according to claim 1, characterized in that: The outer wall of the electrode holder (2) is provided with an annular connecting groove (22), and the positioning cap is placed in the annular connecting groove (22) corresponding to the edge of the positioning hole (10).

6. The electrode connection assembly for a transcranial electrical stimulator according to claim 1, characterized in that: The electrode holder (2) is cylindrical in shape, the flexible liquid absorption component (3) is cylindrical in shape to match the receiving hole (20), and the electrode body (4) is annular in shape to match the receiving hole (20).

7. The electrode connection assembly for a transcranial electrical stimulator according to claim 1, characterized in that: The flexible liquid-absorbing component (3) has a connecting ring groove (31) on its side wall; it also includes a bracket (6), which includes an annular connecting part (61) and an extending protrusion (62). The annular connecting part (61) is embedded in the connecting ring groove (31), and the extending protrusion (62) extends radially outward from one side of the annular connecting part (61) to the outside of the electrode seat (2) and the extending protrusion (62) is placed in the U-shaped through groove (21). The bracket (6) is on the side of the positioning cap away from the skin.

Images