Electrophysiological signal acquisition device

Abstract

The utility model provides an electrophysiological signal acquisition device. The device comprises a collection box, an electrode plate, a positioning pressing plate, a first suction part and a second suction part, the electrode plate is provided with a plurality of conductive connection points which are electrically connected with the plurality of acquisition contacts respectively; a plurality of elastic ejector pins electrically connected with the signal processing module are arranged on an acquisition circuit board of the acquisition box; the shell is recessed to form a positioning groove, a plurality of pin holes are formed in the bottom wall of the positioning groove, and the elastic ejector pins protrude out of the pin holes in a natural state; the electrode plate, the second suction part and the positioning pressing plate are connected, the first suction part is arranged in the shell, when the positioning pressing plate is positioned in the positioning groove, the first suction part and the second suction part are sucked, and the top end of the elastic ejector pin abuts against the conductive connection point. According to the utility model, the electrode plates and the acquisition circuit board are reliably connected through the elastic ejector pins and a pull-in mode, loosening is not easy, data transmission is more reliable, meanwhile, more acquisition point positions are easy to expand, and more complete data recording is facilitated.

Description

Technical Field

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

[0002] Surface electromyographic signal (sEMG) is the combined effect of superficial muscle EMG and neural electrical activity on the surface of the skin, which can reflect the activity state of nerves and muscles. At present, it is an effective means to diagnose and treat diseases through electromyographic signals. Electromyographic signals can not only make meaningful diagnosis of motor function, but also provide a good indication of muscle contraction effect under biofeedback treatment. For example, cough is a common respiratory disease caused by inflammation, foreign bodies, physical or chemical stimulation of the trachea, bronchial mucosa or pleura. Its intensity, frequency of occurrence, duration and other parameters can be used as important clinical reference information. When people cough, in addition to the sound, another obvious feature is the movement of the diaphragm. At present, most clinical electromyographic acquisition uses invasive needle electrodes to extract signals or a small number of independent electrodes for acquisition. The electrode is inconvenient to use, and the small number of electrodes does not fully obtain electromyographic signal information, making it difficult to fully record electromyographic information. The data transmission wire of the electrode uses a plug to connect to the acquisition box. The electrode can only be separated from the acquisition box by plugging and unplugging with both hands, which is inconvenient to operate. In addition, the plug is easy to loosen and fall off, affecting the quality of data transmission. Utility Model Content

[0003] In view of the shortcomings of the prior art mentioned above, the purpose of the utility model is to provide an electrophysiological signal acquisition device, which uses elastic ejectors and suction methods to reliably connect the electrode sheet to the acquisition circuit board, is not easy to loosen, and has more reliable data transmission. At the same time, it is easy to expand more acquisition points, which is conducive to more complete data recording.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides an electrophysiological signal acquisition device, comprising: an acquisition box, an electrode sheet, a positioning pressure plate, a first suction member and a second suction member; the electrode sheet has an acquisition part and a connection part, the acquisition part of the electrode sheet is provided with a plurality of acquisition contacts, and the connection part of the electrode sheet has a plurality of conductive connection points electrically connected to the plurality of acquisition contacts respectively; the acquisition box comprises a shell, a collection circuit board is provided in the shell, and a plurality of elastic ejectors electrically connected to a signal processing module are provided on the collection circuit board; the shell is recessed to form a positioning groove, the bottom wall of the positioning groove is provided with a plurality of pinholes, the plurality of elastic ejectors correspond to the plurality of pinholes respectively, and the elastic ejectors protrude from the pinholes in a natural state; the electrode sheet, the second suction member and the positioning pressure plate are connected, the first suction member is arranged in the shell and is located near the plurality of elastic ejectors; the positioning pressure plate is positioned and matched with the positioning groove, and when the positioning pressure plate is positioned in the positioning groove, the first suction member and the second suction member are attracted, and the top of the elastic ejector is in contact with the conductive connection point.

[0005] In an optional solution, both the first attraction member and the second attraction member are magnets, or one of the first attraction member and the second attraction member is a magnet and the other is a magnetic metal sheet.

[0006] In an optional solution, the plurality of elastic ejectors are arranged in a row along the length direction of the positioning groove, the first attraction member is a magnet, the second attraction member is a magnetic metal sheet, and the magnetic metal sheet is sandwiched between the connecting portion of the electrode sheet and the positioning pressure plate.

[0007] In an optional solution, the first attraction component includes a plurality of magnetic blocks, which are fixed on the acquisition circuit board and located on both sides of the plurality of elastic ejector pins; or the plurality of magnetic blocks are fixed on the inner wall surface of the positioning groove; optionally, the magnetic blocks and the magnetic metal sheet are both rectangular; or, the first attraction component is a single magnetic block and is arranged on one side of the elastic ejector pin.

[0008] In an optional solution, an opening for accommodating the electrode sheet is provided on one side of the positioning groove, the positioning pressure plate and the positioning groove are spliced ​​to form the shell, the side wall of the positioning pressure plate located at the opening forms the side wall of the shell, the positioning pressure plate extends away from the inner end of the opening to form a hooking portion, and an accommodating notch is formed at a corresponding position of the shell and the hooking portion, the hooking portion extends into the accommodating notch and protrudes from the surface of the shell; the multiple elastic ejectors are arranged adjacent to the accommodating notch.

[0009] In an optional solution, the outer periphery of the connecting portion of the electrode sheet is provided with a plurality of positioning notches, and the positioning pressure plate is provided with positioning protrusions that cooperate with the plurality of positioning notches, and the electrode sheet and the positioning pressure plate are positioned by the plurality of positioning notches and the plurality of positioning protrusions.

[0010] In an optional scheme, the shell includes an upper shell and a lower shell that are detachably connected, one of the upper shell or the lower shell is formed with a plurality of connecting columns, and the other is formed with a plurality of connecting holes adapted to the connecting columns, and the upper shell and the lower shell are positioned and connected through the connecting columns and the connecting holes; optionally, two connecting holes are symmetrically provided on the shell at both ends of the opening of the positioning groove, and the width of the positioning groove between the two connecting holes is smaller than the width of the positioning groove in the pinhole area.

[0011] In an optional solution, the collecting portion of the electrode sheet includes a plurality of strip-shaped portions, and a plurality of circular collecting contacts are arranged at intervals on each of the strip-shaped portions.

[0012] In an optional solution, there are five strip-shaped portions, and each strip-shaped portion is provided with five or six circular collecting contacts.

[0013] In an optional solution, the electrode sheet is a single-layer flexible printed circuit board, and each circular collection contact has a circular outer edge on both sides that is concentric with the circular collection contact, and the circular outer edge is used to lay out the wiring so that the circular collection contact on the far side of the circular outer edge is connected to the conductive connection point.

[0014] In an optional solution, each of the circular collecting contacts is provided with a plurality of air holes spaced circumferentially thereon.

[0015] As described above, the electrophysiological signal acquisition device provided by the utility model can accurately position the conductive connection point on the electrode sheet and the elastic ejector pin in the positioning groove when the positioning pressure plate is positioned in the positioning groove of the acquisition box, and the electrode sheet and the acquisition box can be firmly attracted by the first attraction member and the second attraction member, so that the elastic ejector pin and the conductive connection point are elastically abutted and not easy to loosen or fall off, thereby ensuring reliable signal transmission. In addition, the number of acquisition contacts is easy to expand, and sufficient acquisition contacts can be designed as needed to achieve multi-channel and multi-point complete acquisition of electromyographic signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of the electrophysiological signal acquisition device provided in an embodiment of the present utility model.

[0017] Figure 2 Display as Figure 1 The exploded schematic diagram of the electrophysiological signal acquisition device shown.

[0018] Figure 3Shown is a schematic diagram of the structure of the electrode sheet of the electrophysiological signal acquisition device provided in an embodiment of the utility model.

[0019] Figure 4 Shown is a schematic diagram of the positioning structure of the electrode sheet of the electrophysiological signal acquisition device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The following is an explanation of the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0021] For ease of description, spatially relative terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatially relative terms are intended to encompass other orientations of the device in use or operation in addition to the orientation depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.

[0022] In the context of the present invention, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0023] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the utility model in a schematic manner, and therefore the illustrations only show components related to the utility model rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the form, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] See also Figures 1 to 4The embodiment of the utility model provides an electrophysiological signal acquisition device, which can be used for surface electromyographic signal acquisition. The electrophysiological signal acquisition device includes: an acquisition box, an electrode sheet 1, a positioning pressure plate 3, a first suction member 8 and a second suction member 2. The electrode sheet 1 has a collection part and a connection part. The collection part of the electrode sheet 1 is provided with a plurality of collection contacts 13, and the collection contacts 13 are used to collect surface electromyographic signals. The connection part of the electrode sheet 1 has a plurality of conductive connection points 11 respectively electrically connected to the plurality of collection contacts 13. The acquisition box includes a shell, a collection circuit board 6 is provided in the shell, and a plurality of elastic ejector pins 7 electrically connected to the signal processing module are provided on the collection circuit board 6. The shell is recessed to form a positioning groove 41, and a plurality of pinholes 42 are provided on the bottom wall of the positioning groove 41. The plurality of elastic ejector pins 7 correspond to the plurality of pinholes 42 respectively, and the elastic ejector pins 7 protrude out of the pinholes 42 in a natural state. The electrode sheet 1, the second suction member 2 and the positioning pressure plate 3 are connected, and the first suction member 8 is arranged in the shell and is located near the plurality of elastic ejector pins 7. The positioning plate 3 is positioned and matched with the positioning groove 41, and when the positioning plate 3 is positioned in the positioning groove 41, the first suction member 8 and the second suction member 2 are attracted, and the top of the elastic ejector pin 7 abuts against the conductive connection point 11, so that each collection contact on the electrode sheet is electrically connected to the signal processing module. Therefore, the multiple conductive connection points on the electrode sheet of this embodiment are precisely aligned through the positioning and matching of the positioning plate 3 and the positioning groove 41 on the collection box, and the collection box and the electrode sheet are connected by the first suction member and the second suction member, so that the elastic ejector pin is tightly abutted against the conductive connection point, and the suction connection is not easy to loosen or fall off, which can ensure the signal transmission quality between the electrode sheet and the collection box, thereby improving the signal collection quality of the collection device, and the collection contacts of the electrode sheet can be set to more according to actual needs. Through multi-channel and multi-point signal collection, the integrity of electrophysiological signal recording can be improved, which is conducive to improving the accuracy of diagnosis and treatment.

[0025] Specifically, the collecting portion of the electrode sheet 1 includes a plurality of strip portions 12, and a plurality of circular collecting contacts 13 are arranged at intervals on each strip portion 12. The diameter of the circular collecting contacts 13 can be set according to actual needs and is not specifically limited here.

[0026] There may be multiple strips 12, and each strip 12 is provided with a plurality of circular collection contacts 13 at intervals. Exemplarily, the electrode sheet has 5 strips 12, and the 5 strips 12 are arranged in a finger shape, wherein the strip 12 corresponding to the middle finger is provided with 6 circular collection contacts 13, and the strips 12 corresponding to the remaining fingers are provided with 5 circular collection contacts, and a total of 26 circular collection contacts 13 are provided on the electrode sheet 1. The conductive connection points 11 of the electrode sheet 1 are arranged in two columns, each column has 13 conductive connection points, and accordingly, the elastic ejector pins 7 are also 26, and are arranged in two columns. It can be understood that there is no specific restriction on the shape and number of the strips 12, and there is no excessive restriction on the shape and number of the collection contacts 13 on each strip, as long as they can meet the actual signal collection requirements.

[0027] The electrode sheet 1 can adopt a flexible printed circuit board structure, specifically a single-layer flexible printed circuit board, which can make the electrode sheet lighter and thinner. Each circular collection contact 13 has a circular outer edge 15 concentric with the circular collection contact 13 on both sides, and the circular outer edge 15 is used to lay out the wiring 16 so that the circular collection contact 13 on the far side of the circular outer edge 15 is connected to the conductive connection point 11. The circular outer edge design can make the wiring neat and beautiful while minimizing the area of ​​the electrode sheet.

[0028] Each circular collection contact 13 is provided with a plurality of air holes 14 at intervals in the circumferential direction, so that the collection can increase the air permeability of the skin.

[0029] Both the first suction member 8 and the second suction member 2 can be magnets. For example, the first suction member 8 and the second suction member 2 are magnets, and the electrode sheet 1 and the collection box are firmly attracted to each other through the attraction between the magnets. Alternatively, one of the first suction member 8 and the second suction member 2 is a magnet, and the other is a magnetic metal sheet. For example, the first suction member 8 is a magnet, and the second suction member 2 is a magnetic metal sheet. The collection box and the electrode sheet 1 are firmly attracted to each other through the attraction of the magnet to the magnetic metal sheet. It can be understood that the first suction member 8 and the second suction member 2 can also include magnets and magnetic metal material structures at the same time, as long as there is sufficient attraction between the collection box and the electrode sheet, and no specific limitation is made here.

[0030] A plurality of elastic ejector pins 7 are arranged in a row along the length direction of the positioning groove. The first attraction member 8 is a magnet, and the second attraction member is a magnetic metal sheet. The magnetic metal sheet is clamped between the connecting portion of the electrode sheet 1 and the positioning pressure plate 3, so that the electrode sheet 1 and the second attraction member 2 are fixed together. It can be understood that other methods can also be used to fix the electrode sheet 1, the second attraction member 2 and the positioning pressure plate 3 together, and no specific restrictions are made here.

[0031] It is worth mentioning that the outer periphery of the connection part of the electrode sheet 1 is provided with a plurality of positioning notches 17, and the positioning plate 3 is provided with a positioning protrusion 32 that is positioned and matched with the plurality of positioning notches. The electrode sheet 1 and the positioning plate 3 are positioned and matched through the plurality of positioning notches 17 and the positioning protrusion 32 to accurately locate the relative position between the conductive connection point 11 and the positioning plate 3, so that after the positioning plate 3 and the positioning groove 41 are positioned, the conductive connection point 11 is accurately aligned with the elastic ejector pin 7. There are four positioning notches 17 and four positioning protrusions 32, two of which are located on the left and right sides of the connection part, and the remaining two positioning notches 17 are located at the end of the connection part. The four positioning protrusions 32 are correspondingly arranged on the positioning plate 3. The positioning protrusions 32 are respectively inserted into the positioning notches 17 to achieve accurate positioning of the electrode sheet 1 and the positioning plate 3. The electrode sheet 1 and the positioning plate 3 can also be connected by other methods, such as glue reinforcement. It can be understood that the present embodiment does not impose specific restrictions on the connection and positioning method of the electrode sheet and the positioning plate, as long as the accurate positioning connection between the two can be achieved.

[0032] The first suction member 8 includes a plurality of magnetic blocks, which are fixed on the acquisition circuit board 6 and located on both sides of the plurality of elastic ejector pins 7. The plurality of elastic ejector pins 7 may also be arranged in a circle or other shapes, and the plurality of magnetic blocks may also be located in the empty space between the plurality of elastic ejector pins 7. The magnetic blocks and the magnetic metal sheet are both rectangular. The plurality of magnetic blocks may also be fixed on the inner wall surface of the positioning groove 41. In some examples, the first suction member 8 may also be a single magnetic block, which is arranged on one side of the elastic ejector pin 8. This embodiment does not impose any specific restrictions on the shape, position, quantity, and installation position of the magnetic blocks.

[0033] An opening for accommodating the electrode sheet is provided on one side of the positioning groove 41, the positioning pressure plate 3 and the positioning groove 41 are spliced ​​to form a shell, the side wall of the positioning pressure plate 3 located at the opening forms the side wall of the shell, the inner end of the positioning pressure plate 3 extends away from the opening to form a hooking portion 31, and an accommodating notch 43 is formed at the corresponding position of the shell and the hooking portion 31, the hooking portion 31 extends into the accommodating notch 43 and protrudes out of the shell surface, and a plurality of elastic ejector pins 7 are arranged near the accommodating notch 43, a single finger can be inserted into the accommodating notch 43 to hook the hooking portion 31 to pull the positioning pressure plate 3 out of the positioning groove 41, and the force arm for flipping and pulling up the positioning pressure plate 3 is greater than the force arm of the suction effect, making the operation more labor-saving.

[0034] The shell includes an upper shell 4 and a lower shell 5 that are detachably connected. One of the upper shell or the lower shell is formed with a plurality of connecting columns 51, and the other is formed with a plurality of connecting holes 44 adapted to the connecting columns 51. The upper shell 4 and the lower shell 5 are positioned and connected by the connecting columns 51 and the connecting holes 44.

[0035] Two connecting holes 44 are symmetrically arranged on the housing at both ends of the opening of the positioning groove 41. The width of the positioning groove between the two connecting holes 44 is smaller than the width of the positioning groove in the pinhole area, so that the area of ​​the elastic ejector pin 7 is larger.

[0036] In summary, the utility model provides an electrophysiological signal acquisition device. When the positioning pressure plate is positioned in the positioning groove of the acquisition box, the conductive connection point on the electrode sheet and the elastic ejector pin in the positioning groove can be accurately positioned. The electrode sheet and the acquisition box can be firmly attracted by the first attraction member and the second attraction member, so that the elastic ejector pin and the conductive connection point are elastically abutted and not easy to loosen or fall off, thereby ensuring reliable signal transmission. In addition, the number of acquisition contacts is easy to expand, and sufficient acquisition contacts can be designed according to needs to realize multi-channel and multi-point complete acquisition of electromyographic signals.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An electrophysiological signal acquisition device, characterized in that: include: A collection box, an electrode sheet, a positioning plate, a first suction member and a second suction member; The electrode sheet has a collection part and a connection part, the collection part of the electrode sheet is provided with a plurality of collection contacts, and the connection part of the electrode sheet has a plurality of conductive connection points electrically connected to the plurality of collection contacts respectively; the collection box includes a shell, a collection circuit board is provided in the shell, and a plurality of elastic ejectors electrically connected to the signal processing module are provided on the collection circuit board; the shell is recessed to form a positioning groove, and a plurality of pinholes are opened on the bottom wall of the positioning groove, and the plurality of elastic ejectors correspond to the plurality of pinholes respectively, and the elastic ejectors protrude from the pinholes in a natural state; the electrode sheet, the second suction member and the positioning pressure plate are connected, the first suction member is arranged in the shell and is located near the plurality of elastic ejectors; the positioning pressure plate is positioned and matched with the positioning groove, and when the positioning pressure plate is positioned in the positioning groove, the first suction member and the second suction member are attracted, and the top of the elastic ejector abuts against the conductive connection point.

2. The electrophysiological signal acquisition device according to claim 1, characterized in that: The first attraction member and the second attraction member are both magnets, or one of the first attraction member and the second attraction member is a magnet and the other is a magnetic metal sheet.

3. The electrophysiological signal acquisition device according to claim 2, characterized in that: The plurality of elastic ejectors are arranged in a row along the length direction of the positioning groove, the first attraction member is a magnet, the second attraction member is a magnetic metal sheet, and the magnetic metal sheet is sandwiched between the connecting portion of the electrode sheet and the positioning pressure plate.

4. The electrophysiological signal acquisition device according to claim 3, characterized in that: The first attraction component includes a plurality of magnetic blocks, which are fixed on the acquisition circuit board and located on both sides of the plurality of elastic ejector pins; or the plurality of magnetic blocks are fixed on the inner wall surface of the positioning groove; or the first attraction component is a single magnetic block and is arranged on one side of the elastic ejector pin.

5. The electrophysiological signal acquisition device according to claim 4, characterized in that: The magnetic block and the magnetic metal sheet are both rectangular.

6. The electrophysiological signal acquisition device according to claim 1, characterized in that: An opening for accommodating the electrode sheet is provided on one side of the positioning groove, the positioning pressure plate and the positioning groove are spliced ​​to form the shell, the side wall of the positioning pressure plate located at the opening forms the side wall of the shell, the positioning pressure plate extends away from the inner end of the opening to form a hooking portion, and an accommodating notch is formed at a position corresponding to the shell and the hooking portion, the hooking portion extends into the accommodating notch and protrudes from the shell surface; the multiple elastic ejectors are arranged adjacent to the accommodating notch.

7. The electrophysiological signal acquisition device according to claim 6, characterized in that: The outer periphery of the connecting portion of the electrode sheet is provided with a plurality of positioning notches, the positioning pressure plate is provided with positioning protrusions that cooperate with the plurality of positioning notches, and the electrode sheet and the positioning pressure plate are positioned by the plurality of positioning notches and the plurality of positioning protrusions.

8. The electrophysiological signal acquisition device according to claim 1, characterized in that: The shell includes an upper shell and a lower shell that are detachably connected, one of the upper shell or the lower shell is formed with a plurality of connecting columns, and the other is formed with a plurality of connecting holes adapted to the connecting columns, and the upper shell and the lower shell are positioned and connected through the connecting columns and the connecting holes.

9. The electrophysiological signal acquisition device according to claim 8, characterized in that: Two connecting holes are symmetrically arranged on the shell at both ends of the opening of the positioning groove, and the width of the positioning groove between the two connecting holes is smaller than the width of the positioning groove in the pinhole area.

10. The electrophysiological signal acquisition device according to claim 1, characterized in that: The collecting portion of the electrode sheet includes a plurality of strip-shaped portions, and a plurality of circular collecting contacts are arranged at intervals on each of the strip-shaped portions.

11. The electrophysiological signal acquisition device according to claim 10, characterized in that: There are five strip-shaped portions, and each strip-shaped portion is provided with five or six circular collecting contacts.

12. The electrophysiological signal acquisition device according to claim 10, characterized in that: The electrode sheet is a single-layer flexible printed circuit board, and each circular collection contact has a circular outer edge concentric with the circular collection contact on both sides, and the circular outer edge is used for laying out wiring so that the circular collection contact on the far side of the circular outer edge is connected to the conductive connection point.

13. The electrophysiological signal acquisition device according to claim 10, characterized in that: Each of the circular collecting contacts is provided with a plurality of air holes at intervals in the circumferential direction.

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