Magnetic brain feedback handle and device

Abstract

The utility model discloses a brain magnetic feedback handle and device belong to handle field, and brain magnetic feedback handle is made of non -magnetic material, makes brain magnetic feedback handle can use under the brain magnetic detection scene, the elastic member both ends of button respectively with key cap and mounting plate resist, and the two pole body of shears fork mechanism cross -setting, and pole body one end is rotatably connected with mounting plate, and the other end is slidably connected with key cap, and elastic band connects two pole body and makes two pole body be in the state of gathering to support key cap, and key cap moves and inserts into the hole and hides the signal of outgoing optical fiber under the action of external force, and the resilience of elastic member and shears fork mechanism makes key cap reset, through above -mentioned design, button uses, and elastic member will be pressed to a certain amount and will have a mutation, and the paragraph feeling of feedback is pressed to feel to the subject, and makes the pressing deformation logic more clear, and shears fork mechanism always provides resilience, and when releasing key cap, key cap rebounds to the top dead center accurately, and it is not easy to feedback failure.

Description

Technical Field

[0001] This utility model relates to the field of handles, and in particular to a magnetoencephalography (MEG) feedback handle and device. Background Technology

[0002] During brain signal measurement, subjects are provided with sensory stimulation such as visual, auditory, or olfactory stimuli to induce activity in specific brain regions. Simultaneously, equipment such as electroencephalography (EEG) and magnetoencephalography (MEG) are used to collect brain signals and gather feedback signals from the subjects. Feedback tasks typically utilize a handle with buttons as the end effector. Among these detection methods, magnetoencephalography (MEG) directly measures the extremely weak magnetic field generated by neuronal discharges, thus requiring the highest level of environmental magnetic field shielding. Existing MEG products all incorporate high-performance magnetic shielding devices. Therefore, the equipment used by subjects inside the magnetic shielding device must be non-magnetic and not interfere with the normal operation of the sensors.

[0003] Existing button handles contain metal components, especially ferromagnetic materials, which make them unsuitable for use in magnetoencephalography (MEG) testing scenarios. Some button handles only use rubber components for rebound, which may lead to feedback failure due to excessive pressing and failure to rebound. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a magnetic brain feedback handle that can be used in magnetic brain detection scenarios and is not prone to feedback failure.

[0005] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a magnetic brain feedback device that can be used in the context of magnetic brain detection and is not prone to feedback failure.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] A magnetoencephalography (MEG) feedback handle, made of non-magnetic material, includes a housing, a button mounted on the housing, an optical fiber fixing plate, and a mounting plate. The mounting plate is fixed to the housing, and the optical fiber fixing plate is fixed to either the housing or the mounting plate. The optical fiber fixing plate has two positioning slots and a through hole between the two positioning slots. The two positioning slots are respectively used to install an outgoing optical fiber and a receiving optical fiber. The button includes a button cap, an elastic element, and a scissor mechanism. The two ends of the elastic element abut against the button cap and the mounting plate, respectively. The scissor mechanism includes two rods and an elastic band. The two rods are arranged crosswise. One end of each rod is rotatably connected to the mounting plate, and the other end is slidably connected to the button cap. The elastic band connects the two rods, keeping them in a retracted state to support the button cap. When the button cap is subjected to external force, it moves into the through hole and blocks the signal from the outgoing optical fiber. The rebound force of the elastic element and the scissor mechanism resets the button cap.

[0008] Furthermore, the two rods are a first rod and a second rod, the bottom of the first rod is rotatably connected to the mounting plate, and the top of the first rod is slidably connected to the button cap; the bottom of the second rod is slidably connected to the mounting plate, and the top of the second rod is rotatably connected to the button cap.

[0009] Furthermore, the elastic band is a ring, and the elastic band is sleeved on the top of the first rod and the second rod.

[0010] Furthermore, the scissor mechanism also includes a mounting base and a slide. There are two mounting bases and two slides. One mounting base and one slide are fixed to the mounting plate, and the other mounting base and the other slide are fixed to the button cap. The two mounting bases are located on the same side, and the two slides are located on the same side. Each slide is provided with a sliding groove. One end of the rod is rotatably connected to the mounting base, and the other end is slidably mounted in the sliding groove.

[0011] Furthermore, each of the buttons is equipped with two scissor mechanisms, which are located on both sides of the elastic member.

[0012] Furthermore, the button cap includes a pressing part, a contact edge, and a light-shielding part. The contact edge is located between the pressing part and the light-shielding part. The pressing part is fixedly connected to the contact edge and the light-shielding part. The housing is provided with a mounting hole. The pressing part is movably mounted in the mounting hole. When the button cap is not pressed, the contact edge abuts against the housing. When the button cap is pressed, the light-shielding part extends into the through hole.

[0013] Furthermore, the elastic element includes a cylindrical portion and a tapered portion extending from the cylindrical portion, the cylindrical portion being sleeved on the button cap, and the large end of the tapered portion abutting against the mounting plate.

[0014] Furthermore, the fiber optic fixing plate includes an upper fixing plate and a lower fixing plate, the upper fixing plate and the lower fixing plate are fixedly connected, the through hole passes through the upper fixing plate and the lower fixing plate, and the two positioning grooves are respectively located between the upper fixing plate and the lower fixing plate.

[0015] Furthermore, the magnetoencephalography feedback handle also includes a wire bundler, which is fixedly installed inside the housing and gathers the outgoing optical fiber and the receiving optical fiber.

[0016] The second objective of this utility model is achieved by the following technical solution:

[0017] The magnetoencephalography (MEG) feedback device includes an optical signal transceiver and an optical fiber, wherein the optical fiber includes an outgoing optical fiber and a receiving optical fiber. The MEG feedback device also includes any of the aforementioned MEG feedback handles. The outgoing optical fiber and the receiving optical fiber are installed in the two positioning slots of the MEG feedback handle. When the button cap is moved by an external force and extends into the through hole to block the signal of the outgoing optical fiber, the optical signal transceiver generates an electrical signal.

[0018] Compared to existing technologies, this novel magnetoencephalography (MEG) feedback handle is made of non-magnetic materials, enabling its use in MEG testing scenarios. The button includes a button cap, an elastic element, and a scissor mechanism. The elastic element's two ends respectively abut against the button cap and the mounting plate. The scissor mechanism includes two rods and an elastic band. The two rods are arranged crosswise, with one end of each rod rotatably connected to the mounting plate and the other end slidably connected to the button cap. The elastic band connects the two rods, keeping them in a contracted state to support the button cap. When the button cap is subjected to external force, it moves into the through hole, blocking the signal from the emitted optical fiber. The rebound force of the elastic element and the scissor mechanism resets the button cap. Through this design, when the button is used, the elastic element will collapse after being pressed to a certain amount, resulting in a sudden change in pressing force. This provides the test subject with a segmented pressing sensation, making the pressing deformation logic clearer. On the other hand, the scissor mechanism always provides rebound force. When the test subject releases the button cap at the lower stop point, the button cap can quickly and accurately rebound to the upper stop point, reducing the likelihood of feedback failure. Attached Figure Description

[0019] Figure 1 This is a perspective view of the magnetoencephalography feedback device of this utility model;

[0020] Figure 2 for Figure 1 3D exploded view of the EEG feedback handle of the EEG feedback device;

[0021] Figure 3 for Figure 2 A 3D diagram of the buttons on the magnetoencephalography (MEG) feedback handle;

[0022] Figure 4 for Figure 2 An exploded view of the fiber optic mounting plate of the magnetoencephalogram (MEG) feedback handle.

[0023] Figure 5 for Figure 2 A cross-sectional view of the magnetoencephalogram (MEG) feedback handle;

[0024] Figure 6 for Figure 2 Another cross-sectional view of the magnetoencephalography (MEG) feedback handle.

[0025] In the diagram: 10. Magnetic EEG feedback handle; 11. Housing; 110. Upper housing; 1101. Mounting hole; 111. Lower housing; 12. Mounting plate; 13. Button; 130. Button cap; 1301. Pressing part; 1302. Contact edge; 1303. Sleeve part; 1304. Light-shielding part; 131. Elastic element; 132. Scissor mechanism; 1320. Mounting base; 1321. First rod; 1322. Second rod; 1323. Slide; 13230. Slide groove; 1324. Elastic band; 14. Fiber optic fixing plate; 141. Upper fixing plate; 142. Lower fixing plate; 143. Positioning groove; 144. Through hole; 15. Cable bundler; 20. Fiber optic cable; 21. Outgoing fiber optic cable; 22. Receiving fiber optic cable; 30. Optical signal transceiver. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figure 1The present invention relates to a magnetoencephalography (MEG) feedback device, comprising a MEG feedback handle 10, an optical fiber 20, and an optical signal transceiver 30. The optical signal transceiver 30 transmits optical signals to the MEG feedback handle 10 via the outgoing optical fiber 21 of the optical fiber 20. When the button 13 of the MEG feedback handle 10 is pressed, the button 13 blocks the optical signal, preventing the receiving optical fiber 22 from receiving the optical signal. The optical signal transceiver 30 can determine the change of optical signal at a specific interface and the corresponding accurate time through internal circuit signal processing. Since the transceiver interface corresponds one-to-one with the handle button 13, the state of the subject performing the feedback task (which button was pressed) and the time can be known.

[0030] The magnetoencephalography (MEG) feedback handle 10 is made entirely of non-magnetic materials. Please continue reading. Figure 2 The magnetoencephalography (MEG) feedback handle 10 includes a housing 11, a mounting plate 12, a button 13, an optical fiber fixing plate 14, and a cable bundle 15.

[0031] The housing 11 includes an upper housing 110 and a lower housing 111, which are fixedly connected. A mounting plate 12, a button 13, a fiber optic fixing plate 14, and a cable bundle 15 are installed between the upper housing 110 and the lower housing 111. The upper housing 110 has mounting holes 1101 for mounting the button 13, allowing the button cap 130 of the button 13 to protrude from the housing 11 for easy pressing. There are multiple mounting holes 1101, symmetrically arranged about the center line of the housing 11.

[0032] Mounting plate 12 is located inside housing 11 and fixed to housing 11. Mounting plate 12 is used to fix fiber optic fixing plate 14 and mounting button 13.

[0033] Please continue reading. Figure 3 , Figure 5 as well as Figure 6 The button 13 includes a button cap 130, an elastic element 131, and a scissor mechanism 132. The elastic element 131 and the scissor mechanism 132 are used to provide the spring force for the button cap 130 to return to its original position.

[0034] The keycap 130 includes a pressing portion 1301, a contact edge 1302, a fitting portion 1303, and a light-shielding portion 1304. The pressing portion 1301 is cylindrical, and the contact edge 1302 is square, with the side length of the contact edge 1302 being greater than the diameter of the pressing portion 1301. The fitting portion 1303 extends from the bottom of the contact edge 1302, and its diameter is smaller than the diameter of the pressing portion 1301. The light-shielding portion 1304 extends from the fitting portion 1303, and its diameter is smaller than the diameter of the fitting portion 1303. The pressing portion 1301 is used for user pressing and is located in the mounting hole 1101 and moves along the axial direction of the mounting hole 1101. The contact edge 1302 is used to abut against the inner wall of the upper housing 110 when the keycap 130 rebounds, preventing the keycap 130 from dislodging from the mounting hole 1101. The sleeve part 1303 is used to install the elastic element 131. The light-shielding part 1304 is used to extend into the through hole 144 of the optical fiber fixing plate 14 when the key cap 130 is pressed, thereby blocking the optical signal.

[0035] An elastic element 131 is installed between the keycap 130 and the mounting plate 12, with both ends abutting against the keycap 130 and the mounting plate 12 respectively. When the keycap 130 is pressed, the elastic element 131 is compressed. When the external force on the keycap 130 is removed, the elastic element 131 returns to its original shape, and the elastic force of the elastic element 131 causes the keycap 130 to return to its original position. Specifically, the elastic element 131 is made of rubber and includes a cylindrical portion and a tapered portion extending from the cylindrical portion. The cylindrical portion is fitted onto the keycap 130, and the larger end of the tapered portion abuts against the mounting plate 12. The number of elastic elements 131 is the same as the number of keycaps 130, with one elastic element 131 installed on each keycap 130.

[0036] Each scissor lift mechanism 132 includes two mounting bases 1320, a first rod 1321, a second rod 1322, two slides 1323, and an elastic band 1324. The two mounting bases 1320 are respectively fixed to the mounting plate 12 and the contact edge 1302, and are located on the same side. The two slides 1323 are respectively fixed to the mounting plate 12 and the contact edge 1302, and are located on the other side. Each slide 1323 has a sliding groove 13230. The bottom of the first rod 1321 is rotatably connected to the mounting base 1320, and the top of the first rod 1321 is slidably connected to the sliding groove 13230; the bottom of the second rod 1322 is slidably connected to the sliding groove 13230, and the top of the second rod 1322 is rotatably connected to the mounting base 1320. The first rod 1321 and the second rod 1322 are arranged crosswise. An elastic band 1324 connects to both the first and second rods 1321 and 1322, causing them to tend to close together and providing upward support to the button cap 130. Specifically, the elastic band 1324 is a rubber elastic band, and it is ring-shaped, fitted onto the top of both the first and second rods 1321 and 1322.

[0037] Each button cap 130 is provided with two scissor mechanisms 132, which are located between the elastic members 131. The presence of the scissor mechanisms 132 can prevent the button cap 130 from twisting when it is pressed.

[0038] Please continue reading. Figure 4 The fiber optic fixing plate 14 includes an upper fixing plate 141 and a lower fixing plate 142, which are parallel to each other and fixed to the mounting plate 12. The fiber optic fixing plate 14 also has two positioning grooves 143 and a through hole 144. The through hole 144 penetrates the upper fixing plate 141 and the lower fixing plate 142, and is used for the button cap 130 to extend into and block the light signal. The two positioning grooves 143 are located on the mating surfaces of the upper fixing plate 141 and / or the lower fixing plate 142, and are on the same straight line. The through hole 144 is located between the two positioning grooves 143 and on the same straight line. An outgoing fiber optic cable 21 and a receiving fiber optic cable 22 are mounted on the two positioning grooves 143 and are coaxially arranged. The number of fiber optic fixing plates 14 is the same as the number of buttons 13.

[0039] The cable bundler 15 is installed inside the housing 11. The mounting plate 12 has optical fiber 20 routing grooves. All optical fibers 20 are gathered from the mounting plate 12 to the front end outlet and uniformly constrained in the cable bundler 15. The mounting plate 12 is then fixed to the upper housing 110 by plastic screws.

[0040] The optical fiber 20 includes an outgoing optical fiber 21 and a receiving optical fiber 22. The outgoing optical fiber 21 and the receiving optical fiber 22 are installed on two positioning slots 143. The outgoing optical fiber 21 emits optical signals, and the receiving optical fiber 22 is used to receive optical signals.

[0041] The optical signal transceiver 30 is used to acquire the subject's state of performing the feedback task. When the button 13 of the EEG feedback handle 10 is pressed, the button 13 blocks the optical signal, preventing the receiving optical fiber 22 from receiving the optical signal. The optical signal transceiver 30 can determine the specific interface optical signal change and the corresponding accurate time through internal circuit signal processing. Since the transceiver interface corresponds one-to-one with the handle button 13, the subject's state of performing the feedback task (which button was pressed) and the time can be known.

[0042] Please continue reading. Figure 5 as well as Figure 6When using the magnetoencephalography (MEG) feedback device, when the button cap 130 is pressed, the pressure is transmitted to the elastic element 131 and the scissor mechanism 132. When the pressing pressure exceeds a certain limit, the elastic element 131 will be deformed and the rod of the scissor mechanism 132 will be driven to slide in the slide groove 12230, while the other end of the rod will rotate and the elastic band 1324 will be stretched and deformed. When the pressing height exceeds a certain limit, the elastic element 131 will collapse and deform until the button cap 130 is pressed to the lowest point and touches the mounting plate 12 (defined as the lower stop point of the button cap 130). At the same time, the light-shielding part 1304 at the bottom of the button cap 130 will move downward continuously to block the optical path from the outgoing optical fiber 21 to the receiving optical fiber 22. The circuit of the optical signal transceiver 30 outside the shielding device will generate a falling edge signal. This signal is transmitted to the brain signal detection device at the back end to mark the subject's button feedback information.

[0043] The magnetoencephalogram (MEG) feedback handle 10 of this application is made entirely of non-magnetic material with no internal metal parts. Therefore, the MEG feedback handle 10 can be used in EEG, near-infrared, and magnetic resonance imaging (MRI) measurements, especially magnetoencephalogram (MEG), without interfering with the acquisition of brain signals, particularly magnetoencephalogram (MEG) signals. The elastic element 131 and the scissor mechanism 132 always have an initial elastic force to fix the button cap 130 in the mounting hole 1101 of the upper housing 110. Due to the existence of the initial force and the need to overcome the rebound force of both mechanisms during pressing deformation, accidental touches can be effectively prevented. The scissor mechanism 132 restricts the rotational freedom of the button cap 130. Combined with the hole-axis fit of the mounting hole 1101 of the upper housing 110, the button cap 130 can ensure effective and accurate up-and-down movement along this axis. The elastic element 131 will collapse when pressed to a certain amount, at which point the button... The pressure will have a sudden change, which will give the test subject a segmented pressing feeling, making the pressing deformation logic clearer; on the other hand, the scissor mechanism 132 always provides rebound force. When the test subject releases the button cap 130 at the lower dead point, the button cap 130 can quickly and accurately rebound to the upper dead point (some similar products only have rubber rebound parts. After pressing, the button cap 130 may move in addition to the top movement, and there may also be displacement in the circumference. At the same time, when the test subject presses too hard, the elastic rebound parts will collapse too much and cannot rebound normally, which may cause the button feedback to fail).

[0044] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A magnetoencephalography (MEG) feedback handle, comprising a housing and a button mounted on the housing, characterized in that: The magnetoencephalography (MEG) feedback handle is made of non-magnetic material. It also includes an optical fiber fixing plate and a mounting plate. The mounting plate is fixed to the housing, and the optical fiber fixing plate is fixed to either the housing or the mounting plate. The optical fiber fixing plate has two positioning slots and a through hole between them. The two positioning slots are respectively used to install an outgoing optical fiber and a receiving optical fiber. The button includes a button cap, an elastic element, and a scissor mechanism. The elastic element has two ends that abut against the button cap and the mounting plate, respectively. The scissor mechanism includes two rods and an elastic band. The two rods are arranged crosswise. One end of each rod is rotatably connected to the mounting plate, and the other end is slidably connected to the button cap. The elastic band connects the two rods, causing them to be in a retracted state to support the button cap. When the button cap is subjected to external force, it moves into the through hole, blocking the signal from the outgoing optical fiber. The rebound force of the elastic element and the scissor mechanism resets the button cap.

2. The magnetoencephalography (MEG) feedback handle according to claim 1, characterized in that: The two rods are a first rod and a second rod. The bottom of the first rod is rotatably connected to the mounting plate, and the top of the first rod is slidably connected to the button cap. The bottom of the second rod is slidably connected to the mounting plate, and the top of the second rod is rotatably connected to the button cap.

3. The magnetoencephalography (MEG) feedback handle according to claim 2, characterized in that: The elastic band is a ring and is sleeved on the top of the first rod and the second rod.

4. The magnetoencephalography (MEG) feedback handle according to claim 2, characterized in that: The scissor mechanism further includes a mounting base and a slide. There are two mounting bases and two slides. One mounting base and one slide are fixed to the mounting plate, and the other mounting base and the other slide are fixed to the button cap. The two mounting bases are located on the same side, and the two slides are located on the same side. Each slide is provided with a sliding groove. One end of the rod is rotatably connected to the mounting base, and the other end is slidably installed in the sliding groove.

5. The magnetoencephalography (MEG) feedback handle according to claim 1, characterized in that: Each button is equipped with two scissor mechanisms, which are located on both sides of the elastic element.

6. The magnetoencephalography (MEG) feedback handle according to claim 1, characterized in that: The button cap includes a pressing part, a contact edge, and a light-shielding part. The contact edge is located between the pressing part and the light-shielding part. The pressing part is fixedly connected to the contact edge and the light-shielding part. The housing is provided with a mounting hole. The pressing part is movably mounted in the mounting hole. When the button cap is not pressed, the contact edge abuts against the housing. When the button cap is pressed, the light-shielding part extends into the through hole.

7. The magnetoencephalography (MEG) feedback handle according to claim 1, characterized in that: The elastic element includes a cylindrical portion and a tapered portion extending from the cylindrical portion. The cylindrical portion is fitted onto the button cap, and the large end of the tapered portion abuts against the mounting plate.

8. The magnetoencephalography (MEG) feedback handle according to claim 1, characterized in that: The fiber optic fixing plate includes an upper fixing plate and a lower fixing plate, the upper fixing plate and the lower fixing plate are fixedly connected, the through hole passes through the upper fixing plate and the lower fixing plate, and the two positioning grooves are respectively located between the upper fixing plate and the lower fixing plate.

9. The magnetoencephalography (MEG) feedback handle according to claim 1, characterized in that: The magnetoencephalography (MEG) feedback handle also includes a wire bundler, which is fixedly installed inside the housing and gathers the outgoing optical fiber and the receiving optical fiber.

10. A magnetoencephalography (MEG) feedback device, comprising an optical signal transceiver and an optical fiber, wherein the optical fiber comprises an outgoing optical fiber and a receiving optical fiber, characterized in that: The magnetoencephalography (MEG) feedback device further includes a MEG feedback handle as described in any one of claims 1-9, wherein the outgoing optical fiber and the receiving optical fiber are installed in the two positioning slots of the MEG feedback handle, and when the button cap is moved by external force and extends into the through hole to block the signal of the outgoing optical fiber, the optical signal transceiver generates an electrical signal.

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