Electrophysiological signal acquisition device

Abstract

The utility model discloses an electrophysiological signal acquisition device, which comprises a shell, an electrophysiological signal acquisition module, a power supply module, a power supply module, a power supply module and a power supply module, and is characterized in that the shell is provided with a storage cavity and a placement hole; the electrode is arranged in the placing hole; and the waterproof layer is arranged between the hole wall of the placing hole and the electrode. The electrophysiological signal acquisition device can effectively prevent liquid from damaging the circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an electrophysiological signal acquisition device. Background Art

[0002] In the related art, an electrophysiological signal acquisition device is a device used to record and analyze electrical activities in a living body, which can acquire a variety of electrophysiological signals such as electrocardiogram signals, electroencephalogram signals, electromyography signals, and human body impedance.

[0003] An electrophysiological signal acquisition device generally includes electrodes, a circuit board, and a housing. The electrodes and the circuit board are arranged in the housing, and the electrodes and the circuit board are electrically connected. The electrodes can be used to contact the organism, collect electrophysiological signals, and then transmit them to the circuit board for processing. Existing electrophysiological signal acquisition devices need to frequently contact the human body when collecting electrophysiological signals. Among them, after the electrophysiological signal acquisition device frequently contacts the human body, since people may have disinfectants or sweat on their bodies when collecting electrophysiological signals, these liquids will enter the electrophysiological signal acquisition device and damage the circuit board. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an electrophysiological signal acquisition device, which can effectively prevent liquid from damaging a circuit board.

[0005] According to an embodiment of the present invention, the electrophysiological signal acquisition device comprises:

[0006] A shell having a storage cavity and a placement hole, wherein the placement hole is communicated with the storage cavity;

[0007] An electrode, disposed in the placement hole;

[0008] A waterproof layer is arranged between the hole wall of the placement hole and the electrode.

[0009] The electrophysiological signal acquisition device according to the embodiment of the utility model has at least the following beneficial effects: by setting the waterproof layer between the hole wall of the placement hole and the electrode, liquid damage to the circuit board can be effectively prevented. Specifically, when the electrophysiological signal acquisition device collects electrophysiological signals of a living body, even if there is a lot of sweat on the human body, after the electrode and sweat come into contact, the waterproof layer can still effectively prevent liquid from entering the housing, thereby avoiding damage to the circuit board. Specifically, the electrophysiological signal acquisition device can effectively prevent liquid from damaging the circuit board.

[0010] According to some embodiments of the electrophysiological signal acquisition device of the present utility model, the placement hole includes a first hole and a second hole that are interconnected, the second hole is connected to the storage cavity, the cross-sectional area of ​​the first hole is larger than the cross-sectional area of ​​the second hole, the electrode is arranged in the first hole, and the waterproof layer is connected to the hole wall of the first hole.

[0011] According to some embodiments of the electrophysiological signal acquisition device of the present utility model, the electrophysiological signal acquisition device also includes a circuit board and a connector, the circuit board is arranged in the storage cavity, the connector is arranged in the second hole, and two ends of the connector are electrically connected to the circuit board and the electrode respectively.

[0012] According to the electrophysiological signal acquisition device of some embodiments of the present utility model, the connecting piece is an elastic structure.

[0013] According to some embodiments of the electrophysiological signal acquisition device of the present utility model, the electrophysiological signal acquisition device further includes a limiting member, a portion of the limiting member is connected to the cavity wall of the storage cavity, and another portion of the limiting member is arranged in the placement hole.

[0014] According to some embodiments of the electrophysiological signal acquisition device of the present utility model, a plurality of the limiting members are provided, and the plurality of the limiting members are arranged along the central circumference of the placement hole.

[0015] According to some embodiments of the electrophysiological signal acquisition device of the present utility model, a side of the electrode facing away from the storage cavity protrudes out of the placement hole.

[0016] According to the electrophysiological signal acquisition device of some embodiments of the utility model, the waterproof layer is formed by curing the gap between the hole wall of the placement hole and the electrode through the waterproof glue.

[0017] According to some embodiments of the electrophysiological signal acquisition device of the present utility model, the electrophysiological signal acquisition device further includes a gripping member, the gripping member is connected to the shell, and the gripping member and the shell jointly define a gripping hole.

[0018] According to the electrophysiological signal acquisition device of some embodiments of the present utility model, two gripping members are provided, and the two gripping members are respectively connected to two sides of the shell.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 It is a schematic diagram of an electrophysiological signal acquisition device according to a first embodiment of the utility model;

[0022] Figure 2 A schematic diagram of an electrophysiological signal acquisition device according to a second embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of an electrophysiological signal acquisition device according to some embodiments of the present utility model;

[0024] Figure 4 It is a partial schematic diagram of a housing in an electrophysiological signal acquisition device in some embodiments of the utility model;

[0025] Figure 5 Schematic diagram of electrodes in an electrophysiological signal acquisition device in some embodiments of the utility model;

[0026] Figure 6 Schematic diagram of connectors in an electrophysiological signal acquisition device according to some embodiments of the present utility model.

[0027] Reference numerals:

[0028] Electrophysiological signal acquisition device 10 , housing 100 , storage cavity 110 , placement hole 120 , first hole 121 , second hole 122 , electrode 200 , waterproof layer 300 , circuit board 400 , connector 500 , stopper 600 , gripping member 700 , gripping hole 710 . DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] In the related art, the electrophysiological signal acquisition device 10 is a device for recording and analyzing electrical activities in a living body, which can acquire various electrophysiological signals such as electrocardiogram signals, electroencephalogram signals, electromyography signals, and human body impedance.

[0035] The electrophysiological signal acquisition device 10 generally includes an electrode 200, a circuit board 400 and a housing 100. The electrode 200 and the circuit board 400 are arranged in the housing 100, and the electrode 200 and the circuit board 400 are electrically connected. The electrode 200 can be used to contact a biological body, collect electrophysiological signals, and then transmit them to the circuit board 400 for processing. The existing electrophysiological signal acquisition device 10 needs to frequently contact the human body when collecting electrophysiological signals. Among them, after the electrophysiological signal acquisition device 10 frequently contacts the human body, since the person may have disinfectant or sweat on the body when collecting electrophysiological signals, these liquids will enter the electrophysiological signal acquisition device 10 and damage the circuit board 400. For this reason, the present application proposes an electrophysiological signal acquisition device 10.

[0036] Please refer to Figures 1 to 6In some embodiments, the electrophysiological signal acquisition device 10 collects weak electrical signals generated by a biological body through sensors such as electrodes 200, and after amplification, filtering and digital processing, it is used for subsequent analysis and diagnosis. Among them, the electrodes 200 in the electrophysiological signal acquisition device 10 are attached to the human body to collect electrophysiological signals. The specific structure of the electrophysiological signal acquisition device 10 is introduced below. The electrophysiological signal acquisition device 10 includes: a housing 100, a circuit board 400, an electrode 200 and a waterproof layer 300. The housing 100 has a storage cavity 110 and a placement hole 120, and the placement hole 120 is connected to the storage cavity 110. A plurality of electronic components, such as a circuit board 400, can be placed in the storage cavity 110. The circuit board 400 can be a flexible circuit board or a rigid circuit board. The electrode 200 is arranged in the placement hole 120, and the electrode 200 and the circuit board 400 are electrically connected. The electrode 200 can transmit the detected electrophysiological signal to the circuit board 400, and the circuit board 400 is processed. One end of the placement hole 120 is connected to the storage cavity 110, and the other end of the placement hole 120 is connected to the outside of the housing 100. After the electrode 200 is placed in the placement hole 120, one side of the electrode 200 can contact the skin of the organism. Figure 1 to Figure 2 , the waterproof layer 300 is arranged between the hole wall of the placement hole 120 and the electrode 200, so that the hole wall of the placement hole 120 and the electrode 200 are sealed and connected. Specifically, by arranging the waterproof layer 300 between the hole wall of the placement hole 120 and the electrode 200, liquid can be effectively prevented from damaging the circuit board 400. Specifically, when the electrophysiological signal acquisition device 10 acquires electrophysiological signals of a biological body, even if there is a lot of sweat on the human body, after the electrode 200 contacts the sweat, the waterproof layer 300 can still effectively prevent liquid from entering the housing 100, thereby avoiding damage to the circuit board 400. Specifically, the electrophysiological signal acquisition device 10 can effectively prevent liquid from damaging the circuit board 400.

[0037] The electrophysiological signal acquisition device 10 also includes a switch, a battery and a USB interface. Among them, the battery is electrically connected to the circuit board 400, and the battery is used to power the circuit board 400. The battery is arranged in the storage cavity 110. The external current enters the circuit board 400, and after the rectifier on the circuit board 400 processes the current, it can be transmitted to the battery, thereby charging the battery. Among them, the switch is electrically connected to the circuit board 400, and the switch mainly plays the role of turning on or off the electrophysiological signal acquisition device 10. The USB interface is electrically connected to the circuit board 400, and the data on the circuit board 400 can be transmitted to the computer through the USB interface, and the battery can also be charged through the USB interface. This part belongs to the prior art and will not be introduced further here.

[0038] The waterproof layer 300 can be a silicone rubber adhesive. The silicone rubber adhesive has a waterproof sealing function and can form a sealing strip gasket with good elasticity and resistance to compression deformation. The silicone rubber adhesive has a transparent and smooth appearance, is soft and elastic, non-toxic and tasteless, and has good elasticity. The silicone rubber adhesive can be directly adhered to the surface of the electrode 200, has strong adhesion, and is convenient for the installation, maintenance and disassembly of the electrode 200. The waterproof layer 300 can be a polyvinyl chloride (PVC) waterproof material. The waterproof layer 300 can be a hot melt adhesive. The hot melt adhesive is melted by heating and then applied to the hole wall of the placement hole 120. Then the electrode 200 is installed. After the hot melt adhesive is cooled, a sealing layer is formed, which has good sealing and waterproof properties. The waterproof layer 300 can be a sealing tape. The sealing tape is usually made of materials such as rubber or plastic, has excellent flexibility and adhesion, and can fit tightly to the hole wall of the placement hole 120 to form a waterproof sealing layer.

[0039] Further, the specific structure of the placement hole 120 is described below, please refer to Figure 2 In some embodiments, the placement hole 120 includes a first hole 121 and a second hole 122 that are interconnected. The second hole 122 is connected to the storage chamber 110, and the cross-sectional area of ​​the first hole 121 is larger than the cross-sectional area of ​​the second hole 122. That is, the placement hole 120 is stepped, and the volume of the second hole 122 close to the storage chamber 110 is smaller than the volume of the first hole 121 away from the storage chamber 110. The electrode 200 is arranged in the first hole 121, and the waterproof layer 300 is connected to the hole wall of the first hole 121. The waterproof layer 300 is connected to the hole wall of the first hole 121, and specifically, the waterproof layer 300 is connected to the bottom wall and side wall of the first hole 121. Among them, the design of the placement hole 120 including the first hole 121 and the second hole 122 has the following advantages. First, the first hole 121 can facilitate the electrode 200 to be arranged therein, which plays a role in limiting the electrode 200. That is, when installing the electrode 200, the electrode 200 can be installed in place by abutting against the bottom wall of the first hole 121, which can effectively prevent the electrode 200 from sinking relative to the surface of the housing 100, thereby effectively ensuring that the electrode 200 can contact the human body when the housing 100 contacts the human body. Second, the waterproof layer 300 is connected to the side wall and the bottom wall of the first hole 121, which can make the contact area between the waterproof layer 300 and the electrode 200 larger, thereby further effectively preventing liquid from entering the storage cavity 110.

[0040] Furthermore, it is mentioned above that the electrode 200 is disposed in the first hole 121. It is conceivable that the electrode 200 can be electrically connected to the circuit board 400 through the connector 500. Figure 2In some embodiments, the electrophysiological signal acquisition device 10 further includes a circuit board 400 and a connector 500. The circuit board 400 is disposed in the storage cavity 110, the connector 500 is disposed in the second hole 122, and the two ends of the connector 500 are electrically connected to the circuit board 400 and the electrode 200, respectively. Specifically, one end of the connector 500 can be welded to the pad on the circuit board 400, and the other end of the connector 500 can also be welded to the electrode 200. In this way, the electrical connection between the circuit board 400 and the electrode 200 can be achieved, and when the electrode 200 detects the electrophysiological signal, it can be transmitted to the circuit board 400. In addition, one end of the connector 500 can be welded to the pad on the circuit board 400, and the other end of the connector 500 can be abutted against the electrode 200. Among them, the material of the connector 500 can be copper, iron or other conductive materials.

[0041] Further, in some embodiments, the connector 500 is an elastic structure. Specifically, the connector 500 can be a metal spring, one end of the connector 500 is fixed to the circuit board 400 by welding, and the other end of the connector 500 can abut against the electrode 200. Since the connector 500 is an elastic structure, the elastic force of the connector 500 will drive the connector 500 to abut firmly against the electrode 200. In this way, even if the electrophysiological signal acquisition device 10 encounters an external impact and vibrates or falls, the conductive effect between the electrode 200 and the connector 500 will not disappear, which can improve the reliability of the electrophysiological signal acquisition device 10. In addition, it should be added that the electrode 200 and the connector 500 can facilitate the assembly of the electrophysiological signal acquisition device 10 by abutting. That is, the installation process of the electrophysiological signal acquisition device 10 is to first connect the circuit board 400 and the connector 500 together, then extend the connector 500 into the second hole 122, and then install the waterproof layer 300 and the electrode 200 in the first hole 121. The electrode 200 will abut the connector 500, so that the connector 500 is in a compressed state, and the installation of the electrophysiological signal acquisition device 10 is completed.

[0042] Furthermore, it is described above that the electrode 200 is connected to the circuit board 400 through the connector 500, and the electrode 200 can also be directly electrically connected to the circuit board 400. Figure 2 In some embodiments, the side of the electrode 200 facing the circuit board 400 can protrude into the second hole 122 and be directly electrically connected to the circuit board 400. In this way, the electrode 200 and the circuit board 400 can be electrically connected. The electrode 200 and the circuit board 400 can be electrically connected in a manner that the electrode 200 and the circuit board 400 abut against each other.

[0043] For further information, please refer to Figure 4In some embodiments, the electrophysiological signal acquisition device 10 further includes a stopper 600. A portion of the stopper 600 is connected to the cavity wall of the storage cavity 110, and another portion of the stopper 600 is disposed in the placement hole 120. Specifically, a portion of the stopper 600 may be connected to the bottom wall of the storage cavity 110, and then another portion of the stopper 600 extends into the placement hole 120. In this way, when the electrode 200 is installed in the placement hole 120, the electrode 200 is pushed, and the electrode 200 abuts against the stopper 600. On the one hand, this can effectively prevent the electrode 200 from being directly pushed into the storage cavity 110, and on the other hand, this can remind the installer to install it in place, which can improve the installation efficiency.

[0044] For further information, please refer to Figure 4 In some embodiments, a plurality of limiters 600 are provided, and the plurality of limiters 600 are arranged along the central circumference of the placement hole 120. Specifically, there may be two or four limiters 600. The two limiters 600 are located on different sides of the placement hole 120, and the two limiters 600 are arranged at intervals, wherein the two limiters 600 can respectively abut on both sides of the electrode 200, which can effectively prevent the electrode 200 from being offset or tilted during installation. In other words, the arrangement of the plurality of limiters 600 can make the surface of the motor parallel to the surface of the housing 100.

[0045] Further, it can be imagined that after the electrode 200 is set in the placement hole 120, there are three situations between the volume of the electrode 200 and the volume of the placement hole 120. In the first situation, the volume of the electrode 200 is greater than the volume of the placement hole 120, that is, when the electrode 200 is placed in the placement hole 120, the electrode 200 will protrude relative to the placement hole 120. In the second situation, the volume of the electrode 200 is the same as the volume of the placement hole 120. In this case, when the electrode 200 is placed in the placement hole 120, the surface of the electrode 200 is parallel to the surface of the shell 100, and the electrode 200 will not protrude from the placement hole 120. In the third situation, the volume of the electrode 200 is less than the volume of the placement hole 120, that is, the electrode 200 is concave relative to the surface of the shell 100. Among the above three situations, the third situation will cause the electrode 200 to be unable to contact the human body when the shell 100 contacts the human body, so that the electrophysiological signal of the human body cannot be measured. In the second case, when the housing 100 contacts the human body, the electrode 200 also contacts the human body, but this requires that the housing 100 is placed in a more accurate position. In the first case, even if the housing 100 is placed at an angle that deviates from the human body, the electrode 200 can still contact the human body, thereby detecting the electrophysiological signals of the human body. Figure 2 In some embodiments, the side of the electrode 200 facing away from the storage cavity 110 protrudes out of the placement hole 120 .

[0046] Further, the waterproof layer 300 is introduced below. In some embodiments, the waterproof layer 300 is formed by curing the gap between the hole wall of the placement hole 120 and the electrode 200 by filling the waterproof glue. Among them, the waterproof layer 300 can be hot melt glue. After the electrode 200 is installed in the placement hole 120, the hot melt glue is filled into the gap between the hole wall of the placement hole 120 and the electrode 200 to achieve a waterproof effect. Specifically, this method has the characteristics of low cost and simple operation.

[0047] For further information, please refer to Figure 3 In some embodiments, the electrophysiological signal acquisition device 10 further includes a grip 700. The grip 700 is used for a user to hold, and the grip 700 is connected to the housing 100. The grip 700 and the housing 100 together define a grip hole 710. The user's hand can be inserted into the grip hole 710 to hold the grip 700. The provision of the grip 700 can facilitate the user to carry and take out the electrophysiological signal acquisition device 10.

[0048] For further information, please refer to Figure 3 In some embodiments, two gripping members 700 are provided, and the two gripping members 700 are respectively connected to the two sides of the housing 100. Specifically, the provision of the two gripping members 700 can facilitate the user to hold with both hands. In addition, when the user lifts or moves the electrophysiological signal acquisition device 10, the design of the two gripping members 700 can prevent the electrophysiological signal acquisition device 10 from tilting or shaking, thereby reducing the occurrence of accidents.

[0049] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. An electrophysiological signal acquisition device, characterized in that: include: A shell body having a storage cavity and a placement hole, wherein the placement hole is communicated with the storage cavity; An electrode, disposed in the placement hole; A waterproof layer is arranged between the hole wall of the placement hole and the electrode.

2. The electrophysiological signal acquisition device according to claim 1, characterized in that: The placement hole includes a first hole and a second hole that are interconnected, the second hole is connected to the storage cavity, the cross-sectional area of ​​the first hole is larger than the cross-sectional area of ​​the second hole, the electrode is arranged in the first hole, and the waterproof layer is connected to the hole wall of the first hole.

3. The electrophysiological signal acquisition device according to claim 2, characterized in that: The electrophysiological signal acquisition device further includes a circuit board and a connector. The circuit board is disposed in the storage cavity, the connector is disposed in the second hole, and two ends of the connector are electrically connected to the circuit board and the electrode, respectively.

4. The electrophysiological signal acquisition device according to claim 3, characterized in that: The connecting piece is an elastic structure.

5. The electrophysiological signal acquisition device according to claim 1, characterized in that: The electrophysiological signal acquisition device further includes a limiting member, a portion of which is connected to the cavity wall of the storage cavity, and another portion of which is disposed in the placement hole.

6. The electrophysiological signal acquisition device according to claim 5, characterized in that: There are multiple limiting members, and the multiple limiting members are arranged along the central circumference of the placement hole.

7. The electrophysiological signal acquisition device according to claim 1, characterized in that: The side of the electrode facing away from the storage cavity protrudes out of the placement hole.

8. The electrophysiological signal acquisition device according to claim 1, characterized in that: The waterproof layer is formed by curing the gap between the hole wall of the placement hole and the electrode through the waterproof glue.

9. The electrophysiological signal acquisition device according to claim 1, characterized in that: The electrophysiological signal acquisition device further includes a gripping member, which is connected to the housing, and the gripping member and the housing jointly define a gripping hole.

10. The electrophysiological signal acquisition device according to claim 9, characterized in that: The number of the holding members is two, and the two holding members are respectively connected to two sides of the shell.

Images