Electroencephalogram electrode fluid infusion device

Abstract

The utility model relates to the technical field of medical instruments, in particular to an electroencephalogram electrode fluid infusion device. The device comprises a flexible liquid storage pipe, a liquid outlet pipe, a control assembly and an adjusting assembly, the control assembly comprises a ball seat fixed to the liquid outlet end of the liquid outlet pipe, a ball valve movably embedded in the ball seat, a tightening latch movably arranged in the liquid outlet pipe in a penetrating mode, a connecting seat with one end fixed to the bottom of the tightening latch and the other end abutting against the upper portion of the ball valve, and a cleaning sub-assembly arranged below the liquid outlet pipe, wherein the top of the cleaning sub-assembly is fixed to the lower portion of the ball valve. The cleaning sub-assembly comprises a first connecting rod penetrating through the lower wall face of the ball seat and fixed to the lower portion of the ball valve, second connecting rods symmetrically fixed to the two sides of the lower portion of the connecting rod, mounting rings fixedly arranged at the outer ends of the two second connecting rods in a sleeving mode and water absorption pads detachably connected to the bottoms of the mounting rings in a sleeving mode. The outer wall of the control assembly abuts against the inner wall of the liquid outlet pipe, and the inner wall of the control assembly abuts against the tightening latch. According to the device, redundant paste dripping onto the scalp of a patient can be cleaned, and the discomfort of the patient is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a brain electroencephalogram electrode fluid replenishing device. Background Art

[0002] Electroencephalographs (EEG) detects and records brain electrical signal waveforms by attaching several electrodes to the scalp in a regular manner. EEG is an important information for the current research and diagnosis of mental illnesses. Currently, EEG acquisition can be done non-invasively, and the acquisition equipment is portable. To ensure the quality of EEG signals, the EEG electrodes should be in contact with the scalp as much as possible to reduce the impedance between the EEG device electrodes and the scalp, so as to obtain better signals. In order to reduce impedance, physiological saline or conductive paste is usually used to assist the connection.

[0003] At present, when using conductive paste to moisten the patient's scalp, the conductive paste is usually applied to the surface of the applicator first, and then applied to the patient's scalp where the electrodes are located through the applicator. However, the following problems may occur during the actual operation:

[0004] 1. When the conductive paste is injected into the electrode-placed part of the patient's scalp, the paste will flow around along the curvature of the patient's head, and then flow to the area that does not need to be moistened, increasing the wetness of the patient's scalp, and thus increasing the patient's discomfort;

[0005] 2. When using the existing device for fluid infusion, the flow rate of the paste cannot be adaptively adjusted, so the amount of paste flowing out per unit time cannot be controlled, which will cause waste of the paste. At the same time, too much paste will remain on the patient's scalp, which will increase the discomfort of the patient's scalp. Utility Model Content

[0006] In order to solve the above problems, the purpose of the utility model is to provide an EEG electrode rehydration device, which can clean up the excess paste dripping onto the patient's scalp and reduce the patient's discomfort.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A device for replenishing electroencephalogram (EEG) electrodes, comprising a flexible liquid storage tube, a liquid outlet tube connected to the flexible liquid storage tube, a control component movably arranged in the liquid outlet tube and used for controlling the flow of a paste, and an adjusting component arranged in the liquid outlet tube and cooperating with the control component to adjust the volume in the liquid outlet tube; the control component comprises a ball seat fixed to one side of the liquid outlet end of the liquid outlet tube, a ball valve movably embedded in the ball seat, a bolt rod movably passed through the liquid outlet tube, a connecting seat with one end fixed to the bottom of the bolt rod and the other end abutting against the upper part of the ball valve, and a cleaning subassembly arranged below the liquid outlet tube and with the top fixed to the lower part of the ball valve; the cleaning subassembly comprises a first connecting rod passing through the lower wall of the ball seat and fixedly connected to the lower part of the ball valve, a second connecting rod symmetrically fixedly arranged on both sides of the lower part of the connecting rod, a mounting ring fixedly sleeved on the outer ends of the two second connecting rods, and a water-absorbing pad detachably sleeved on the bottom of the mounting ring; the outer wall of the control component abuts against the inner wall of the liquid outlet tube and the inner wall abuts against the bolt rod.

[0009] More preferably, a plurality of limiting grooves are distributed at intervals around the bottom of the inner wall of the ball seat, and limiting blocks corresponding to the limiting grooves are fixed on the outer surface of the lower part of the ball valve.

[0010] More preferably, the adjustment assembly includes a ring sleeved on the outside of the bolt rod, an adjustment ring sleeved on the outside of the lower part of the ring and the outer wall of which abuts against the inner wall of the liquid outlet pipe, a plurality of support rods fixed to the bottom of the ring, a plurality of springs that are matched one by one with the support rods and used to connect the adjustment ring and the support rods, and an adjustment subassembly that passes through the liquid outlet pipe and is used to adjust the lifting of the adjustment ring; the cross-section of the ring is T-shaped, and the diameter of the outer wall of the upper part of the ring is larger than the diameter of the inner wall of the adjustment ring and larger than the diameter of the outer wall of the lower part of the ring.

[0011] More preferably, the adjusting subassembly includes a screw rod which is arranged along the length direction of the liquid outlet pipe and extends to the outside at the bottom, and a rotating handle which is arranged at the bottom of the liquid outlet pipe and fixed to the bottom of the screw rod; the two ends of the screw rod are respectively rotatably connected to the top and bottom of the liquid outlet pipe; the adjusting ring is arranged outside the screw rod and is slidably connected to the screw rod.

[0012] More preferably, a guide rod is fixedly passed through the liquid outlet tube along the length direction, a through hole matching the guide rod is opened through the adjusting ring along the thickness direction, and the outer wall of the guide rod abuts against the inner wall of the through hole.

[0013] More preferably, the outer wall of the top of the bolt rod is adapted to the liquid inlet of the liquid outlet pipe. When the bolt rod moves to the top, the top of the bolt rod extends above the liquid inlet of the liquid outlet pipe and abuts against the liquid inlet of the liquid outlet pipe. When the bolt rod moves to the bottom, the top of the bolt rod is located below the liquid inlet of the liquid outlet pipe.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model cooperates with the ball valve, the first connecting rod, the two second connecting rods, the mounting ring and the water absorbent pad. When the device is placed on the patient's scalp and pressed down, the water absorbent pad and the scalp are pressed against each other. When the paste in the liquid outlet tube flows out from between the ball seat and the ball valve, the water absorbent pad can absorb the conductive paste flowing to the water absorbent pad, thereby preventing the paste from flowing to the area that does not need to be moistened, reducing the patient's unnecessary wet feeling, and reducing the patient's discomfort.

[0016] 2. The ball valve in the utility model can rotate in the ball seat, which can drive the cleaning subassembly to rotate, so that the water absorbent pad can be adjusted according to the different scalp areas of the patient to achieve a close fit between the water absorbent pad and the patient's scalp;

[0017] 3. In the utility model, by cooperating with the sleeve ring, the adjustment ring, the support rod and the spring, when the adjustment ring is raised or lowered, the distance between the sleeve ring and the adjustment ring can be changed, thereby adjusting the height of the separable gap between the ball valve and the ball seat, so as to control the flow rate of the paste per unit time, avoid wasting the paste, and avoid the increased discomfort caused by excessive paste remaining on the patient's scalp. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the fluid replenishment device;

[0019] Figure 2 This is an enlarged view of the structure at A;

[0020] Figure 3 It is a front cross-sectional view of the fluid infusion device (unpressed state 1);

[0021] Figure 4 This is an enlarged view of the structure at B;

[0022] Figure 5 This is an enlarged view of the structure at C;

[0023] Figure 6 It is a front cross-sectional view of the fluid infusion device (unpressed state 2);

[0024] Figure 7 It is a front cross-sectional view of the fluid infusion device (pressing state 1);

[0025] Figure 8 It is a front cross-sectional view of the fluid replenishing device (pressing state 2);

[0026] Fig. 9 This is a top sectional view of the fluid replenishment device.

[0027] Description of reference numerals:

[0028] 1. Flexible liquid storage tube; 2. Liquid outlet pipe; 3. Control assembly; 31. Ball seat; 311. Limiting groove; 32. Ball valve; 321. Limiting block; 33. Bolt rod; 34. Connecting seat; 35. Cleaning subassembly; 351. First connecting rod; 352. Second connecting rod; 353. Mounting ring; 354. Water absorbent pad; 4. Adjustment assembly; 41. Ring; 42. Adjustment ring; 421. Through hole; 43. Support rod; 44. Spring; 45. Adjustment subassembly; 451. Screw rod; 452. Turning handle; 5. Guide rod. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] A device for replenishing electroencephalogram electrodes, comprising a flexible liquid storage tube 1, a liquid outlet tube 2 connected to the flexible liquid storage tube 1, a control component 3 movably arranged in the liquid outlet tube 2 and used to control the flow of a paste, and an adjustment component 4 arranged in the liquid outlet tube 2 and cooperating with the control component 3 to adjust the volume in the liquid outlet tube 2; the control component 3 comprises a ball seat 31 fixed to one side of the liquid outlet end of the liquid outlet tube 2, a ball valve 32 movably embedded in the ball seat 31, a bolt rod 33 movably inserted in the liquid outlet tube 2, and a screw rod 33 having one end fixed to the bottom of the bolt rod 33 and the other end abutting against the upper part of the ball valve 32. A connecting seat 34 and a cleaning subassembly 35 arranged below the liquid outlet pipe 2 and with the top fixed to the lower part of the ball valve 32; the cleaning subassembly 35 includes a first connecting rod 351 passing through the lower wall of the ball seat 31 and fixedly connected to the lower part of the ball valve 32, a second connecting rod 352 symmetrically fixedly arranged on both sides of the lower part of the connecting rod, a mounting ring 353 fixedly sleeved on the outer ends of the two second connecting rods 352, and a water-absorbing pad 354 detachably sleeved on the bottom of the mounting ring 353; the outer wall of the control component 3 abuts against the inner wall of the liquid outlet pipe 2 and the inner wall abuts against the bolt rod 33.

[0031] Through the cooperation of the ball valve 32, the first connecting rod 351, the two second connecting rods 352, the mounting ring 353 and the water absorbent pad 354, when the device is placed on the patient's scalp and pressed down, the water absorbent pad 354 is against the scalp, and when the paste in the liquid outlet tube 2 flows out from between the ball seat 31 and the ball valve 32, the water absorbent pad 354 can absorb the conductive paste flowing to the water absorbent pad 354, so as to prevent the paste from flowing to the area that does not need to be moistened, thereby reducing the patient's unnecessary wet feeling and reducing the patient's discomfort; because the ball valve 32 can rotate in the ball seat 31, it can drive the cleaning subassembly 35 to rotate, so that the water absorbent pad 354 can be adjusted in angle according to different scalp areas of the patient to achieve a close fit between the water absorbent pad 354 and the patient's scalp.

[0032] As a possible implementation of this solution, preferably, a plurality of limiting grooves 311 are spaced around the bottom of the inner wall of the ball seat 31, and limiting blocks 321 corresponding to the limiting grooves 311 are fixed on the outer surface of the lower part of the ball valve 32; when the ball valve 32 is located at the bottom of the ball seat 31, the limiting grooves 311 abut against the limiting blocks 321; through the cooperation of the limiting grooves 311 and the limiting blocks 321, when the device is pressed against the patient's scalp, the cleaning subgroup The component 35 drives the ball valve 32 to slide upward, so that the limit block 321 is separated from the limit groove 311, so that the paste can flow down from the gap between the ball seat 31 and the ball valve 32. When there is no need to moisten the patient's scalp, the device is lifted upward. At this time, the ball valve 32 and the cleaning subassembly 35 move downward due to gravity, so that the limit block 321 is engaged with the limit groove 311, so that the ball seat 31 and the ball valve 32 are tightly fitted, so that the paste cannot fall from the liquid outlet pipe 2.

[0033] As a possible implementation of this scheme, preferably, the adjustment component 4 includes a collar 41 sleeved on the outside of the bolt rod 33, an adjustment ring 42 sleeved on the outside of the lower part of the collar 41 and the outer wall of which abuts against the inner wall of the liquid outlet pipe 2, a plurality of support rods 43 fixed to the bottom of the collar 41, a plurality of springs 44 that are matched with the support rods 43 one by one and used to connect the adjustment ring 42 and the support rods 43, and an adjustment sub-component 45 that runs through the liquid outlet pipe 2 and is used to adjust the lifting of the adjustment ring 42; the cross section of the collar 41 is T-shaped, and the collar 41 is T-shaped. The diameter of the upper outer wall of the ring 41 is greater than the diameter of the inner wall of the adjustment ring 42, which is greater than the diameter of the lower outer wall of the sleeve 41; through the cooperation of the sleeve 41, the adjustment ring 42, the support rod 43 and the spring 44, when the adjustment ring 42 is raised or lowered, the distance between the sleeve 41 and the adjustment ring 42 can be changed, thereby adjusting the height of the separable gap between the ball valve 32 and the ball seat 31 to achieve control of the outflow of the paste per unit time, avoid wasting the paste, and avoid increased discomfort when too much paste remains on the patient's scalp.

[0034] As a possible implementation of the present scheme, preferably, the regulating subassembly 45 includes a screw rod 451 which is arranged along the length direction of the liquid outlet pipe 2 and whose bottom extends to the outside, and a rotating handle 452 which is arranged at the bottom of the liquid outlet pipe 2 and fixed to the bottom of the screw rod 451; the two ends of the screw rod 451 are respectively rotatably connected to the top and bottom of the liquid outlet pipe 2; the adjusting ring 42 is arranged outside the screw rod 451 and is slidably connected to the screw rod 451; the screw rod 451 is controlled to rotate by rotating the rotating handle 452, so that the adjusting ring 42 slides up and down, thereby adjusting the distance between the adjusting ring 42 and the sleeve ring 41, and then adjusting the separable gap height between the ball valve 32 and the ball seat 31, so as to realize the control of the outflow amount of the paste per unit time, avoid the waste of the paste, and avoid the increased discomfort when too much paste remains on the patient's scalp.

[0035] As a possible implementation of the present scheme, preferably, a guide rod 5 is fixedly passed through the liquid outlet tube 2 along the length direction, and a through hole 421 adapted to the guide rod 5 is opened through the adjustment ring 42 along the thickness direction, and the outer wall of the guide rod 5 abuts against the inner wall of the through hole 421; through the cooperation between the guide rod 5 and the adjustment ring 42, the stability when raising and lowering the adjustment ring 42 can be enhanced, so that the raising and lowering of the adjustment ring 42 during adjustment can be smoother.

[0036] As a possible implementation mode of the present scheme, preferably, the outer wall of the top of the bolt rod 33 is adapted to the liquid inlet of the liquid outlet pipe 2. When the bolt rod 33 moves to the top, the top of the bolt rod 33 extends above the liquid inlet of the liquid outlet pipe 2 and abuts against the liquid inlet of the liquid outlet pipe 2. When the bolt rod 33 moves to the bottom, the top of the bolt rod 33 is located below the liquid inlet of the liquid outlet pipe 2.

[0037] The working principle of this device is:

[0038] When in use, first adjust the positions of the adjusting ring 42 and the sleeve ring 41 according to the required conductive paste capacity to adjust the rate at which the conductive paste flows out, then cover the absorbent pad 354 on the outside of the area that the patient needs to moisten, and then press the device downward. At this time, the cleaning subassembly 35, the ball valve 32, the connecting seat 34, and the bolt rod 33 are all moved upward synchronously, and the top of the bolt rod 33 extends to the liquid inlet of the liquid outlet pipe 2 to prevent the paste in the flexible liquid storage tube 1 from continuing to flow into the liquid outlet pipe 2. The limit block 321 of the ball valve 32 is disengaged from the limit groove 311, and the paste flows down from the gap Z between the sleeve ring 41 and the adjusting ring 42, and the gap between the ball seat 31 and the ball valve 32 in turn. When the paste flows out of the liquid outlet of the liquid outlet pipe 2, it falls down After reaching the patient's scalp, it slides downward along the curvature of the patient's head, and the excess paste will be absorbed by the absorbent pad 354; when all the paste in the liquid outlet tube 2 has flowed out, the device is lifted up, and at this time, the cleaning subassembly 35, the ball valve 32, the connecting seat 34, and the bolt rod 33 are all synchronously moved downward, the limit block 321 of the ball valve 32 is abutted against the limit groove 311, and the bolt rod 33 is moved out from the liquid inlet of the liquid outlet tube 2, so that the paste can flow down from the flexible liquid storage tube 1 to the liquid outlet tube 2 for storage; in this device, the absorbent pad 354 is a disposable product, which can avoid cross infection between patients; in this device, in order to speed up the flow speed of the conductive paste from the flexible liquid storage tube 1 to the liquid outlet tube 2, the flexible liquid storage tube 1 can be squeezed.

[0039] The above description is only a specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A device for replenishing fluid for electroencephalogram electrodes, characterized in that: The invention comprises a flexible liquid storage tube (1), a liquid outlet tube (2) connected to the flexible liquid storage tube (1), a control component (3) movably arranged in the liquid outlet tube (2) and used to control the flow of the paste, and an adjustment component (4) arranged in the liquid outlet tube (2) and cooperating with the control component (3) to adjust the volume in the liquid outlet tube (2); The control assembly (3) comprises a ball seat (31) fixed to one side of the liquid outlet end of the liquid outlet pipe (2), a ball valve (32) movably embedded in the ball seat (31), a bolt rod (33) movably inserted into the liquid outlet pipe (2), a connecting seat (34) with one end fixed to the bottom of the bolt rod (33) and the other end abutting against the upper part of the ball valve (32), and a cleaning subassembly (35) arranged below the liquid outlet pipe (2) and with the top fixed to the lower part of the ball valve (32); The cleaning subassembly (35) comprises a first connecting rod (351) passing through the lower wall of the ball seat (31) and fixedly connected to the lower part of the ball valve (32), second connecting rods (352) symmetrically fixedly arranged on both sides of the lower part of the connecting rod, a mounting ring (353) fixedly sleeved on the outer ends of the two second connecting rods (352), and a water-absorbing pad (354) detachably sleeved on the bottom of the mounting ring (353); The outer wall of the control component (3) abuts against the inner wall of the liquid outlet pipe (2), and the inner wall abuts against the bolt rod (33).

2. The EEG electrode rehydration device according to claim 1, characterized in that: A plurality of limiting grooves (311) are arranged at intervals around the bottom of the inner wall of the ball seat (31), and limiting blocks (321) corresponding to the limiting grooves (311) are fixedly arranged on the outer surface of the lower part of the ball valve (32).

3. The EEG electrode rehydration device according to claim 1, characterized in that: The adjusting assembly (4) comprises a collar (41) sleeved on the outside of the bolt rod (33), an adjusting ring (42) sleeved on the outside of the lower part of the collar (41) and having an outer wall abutting against the inner wall of the liquid outlet pipe (2), a plurality of support rods (43) fixedly arranged at the bottom of the collar (41), a plurality of springs (44) matched with the support rods (43) one by one and used to connect the adjusting ring (42) and the support rods (43), and an adjusting subassembly (45) penetrating the liquid outlet pipe (2) and used to adjust the lifting of the adjusting ring (42); the collar (41) has a T-shaped cross section, and the outer wall diameter of the upper part of the collar (41) is larger than the inner wall diameter of the adjusting ring (42) and larger than the outer wall diameter of the lower part of the collar (41).

4. The EEG electrode rehydration device according to claim 3, characterized in that: The adjusting subassembly (45) comprises a screw rod (451) which is arranged along the length direction of the liquid outlet pipe (2) and whose bottom extends to the outside, and a rotating handle (452) which is arranged at the bottom of the liquid outlet pipe (2) and fixed to the bottom of the screw rod (451); the two ends of the screw rod (451) are respectively rotatably connected to the top and bottom of the liquid outlet pipe (2); and the adjusting ring (42) is arranged outside the screw rod (451) and is slidably connected to the screw rod (451).

5. The EEG electrode rehydration device according to claim 3, characterized in that: A guide rod (5) is fixedly passed through the liquid outlet pipe (2) along the length direction, and a through hole (421) adapted to the guide rod (5) is opened through the adjusting ring (42) along the thickness direction, and the outer wall of the guide rod (5) abuts against the inner wall of the through hole (421).

6. The EEG electrode rehydration device according to claim 1, characterized in that: The outer wall of the top of the bolt rod (33) is adapted to the liquid inlet of the liquid outlet pipe (2); when the bolt rod (33) moves to the top, the top of the bolt rod (33) extends above the liquid inlet of the liquid outlet pipe (2) and abuts against the liquid inlet of the liquid outlet pipe (2); when the bolt rod (33) moves to the bottom, the top of the bolt rod (33) is located below the liquid inlet of the liquid outlet pipe (2).

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