A physiological signal output terminal and an analog meter comprising the same

Abstract

The physiological signal output terminal comprises a cylindrical output terminal base body, a protruding clamping part matched with a snap female body is arranged on the top of the output terminal base body, an insertion hole is arranged on the output terminal base body, a center hole is arranged on the output terminal base body, the upper end of the center hole is communicated with the insertion hole, a combined elastic piece is arranged in the center hole, the upper end of the combined elastic piece is exposed to the insertion hole, and the combined elastic piece and the insertion pin or the banana plug inserted into the insertion hole form elastic pressure connection. The snap male head and the insertion hole arranged on the output terminal are used for realizing different connection modes, the combined elastic piece arranged in the insertion hole is used for adapting the insertion hole to the insertion pin or the banana plug with different size specifications, and the leg part and the clamping groove arranged on the bottom of the output terminal are used for further changing the single bolt fixing mode.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a physiological simulation signal output terminal and an analog device including the terminal. Background Technology

[0002] Electrocardiogram (ECG) or electroencephalogram (EEG) devices (hereinafter referred to as "products") are used to measure electrophysiological signals related to the heart or brain in living organisms. Electrodes are used to collect these signals. These electrodes are placed on the surface of the organism, and the product connects to the electrodes with leads. The connection methods between the product's leads and electrodes include snap-on connectors, banana plugs, and pins. The product's lead ends are typically female snap-on connectors, 4.0mm banana plugs, or 3.0mm pins. The electrode terminals are configured with a connection structure that matches the female snap-on connector, banana plug, or pin at the lead end; specifically, a male snap-on connector with different sized holes (for connecting banana plugs or pins).

[0003] Before a product is launched on the market, its accuracy and consistency need to be verified. This requires testing equipment capable of detecting the accuracy and consistency of the product, known in the industry as a simulator. The simulator can output electrocardiogram (ECG) or electroencephalogram (EEG) signals that simulate those generated by a living organism (collectively referred to as physiological simulation signals). The product needs to be connected to the simulator during testing. The connection between the simulator and the product is similar to the connection between the product and electrodes, requiring the simulator to have physiological simulation signal output terminals that can connect to the product's lead wires.

[0004] However, current signal output terminals are generally of a single structure, only allowing connection to snaps, pins, or banana plugs individually. Typically, the hole size of the output terminal is a fixed value, making it incompatible with different sized pins and banana plugs simultaneously. After numerous insertions and removals, the size of the banana plug or pin may change, resulting in poor connection stability and a tendency to loosen.

[0005] When signal output terminals are used in an analog instrument, they are typically fixed to the instrument's circuit board. Since the output terminals need to output physiological analog signals, and are made of metal, they can be directly connected to the circuit board. The circuit board is designed with pads to facilitate the placement of the output terminals, and screws are used for fixing. However, this method may cause the screws to loosen when moving the analog instrument, leading to poor contact between the output terminals and the circuit board. This, in turn, affects the output quality of the analog physiological signals and impacts the product's testing results. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a physiological signal output terminal that integrates multiple connection methods and whose connection holes can be matched with different sized pins or banana plugs, and an analog device containing the terminal. The signal output terminal fixed on the analog device is firmly fixed and not easy to loosen.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0008] A physiological signal output terminal includes a cylindrical output terminal base, a protruding snap-fit ​​portion matching a snap-fit ​​female body on the top of the output terminal base, a plug hole on the output terminal base, a central hole on the output terminal base, the upper end of the central hole communicating with the plug hole, a combined elastic member disposed in the central hole, the upper part of the combined elastic member protruding into the plug hole, and forming an elastic compression with a pin or banana plug inserted into the plug hole.

[0009] Preferably, the combined elastic element includes a ball, a spring, and a screw.

[0010] Preferably, the combined elastic element includes a dome plate, a spring, and screws that are integrally or separately connected to the base plate.

[0011] Preferably, the combined elastic element includes a base plate, a spring sheet fixed at one end to the base plate, and screws.

[0012] Preferably, the central hole is a through hole communicating with the insertion hole, and its lower section is a threaded hole.

[0013] A physiological signal simulator includes a physiological signal output circuit board with a physiological signal output terminal fixed on the circuit board. The physiological signal output terminal includes a cylindrical output terminal base with a protruding snap-fit ​​portion matching a snap fastener on the top of the output terminal base. A plug hole is provided on the output terminal base, and a central hole is provided on the output terminal base. The upper end of the central hole communicates with the plug hole. A combined elastic element is provided in the central hole, and the upper part of the combined elastic element protrudes into the plug hole, forming an elastic compression with a pin or banana plug inserted into the plug hole.

[0014] Furthermore, the central hole is a through hole communicating with the insertion hole, and its lower section is a threaded hole. The bottom of the output terminal base is provided with a protruding leg. The length of the leg is less than or equal to the thickness of the physiological signal output circuit board. The circuit board is provided with a groove that matches the leg. When fixed, the leg is inserted into the groove, and the physiological signal output terminal is fixed to the circuit board by screws.

[0015] Furthermore, the central hole is a through hole communicating with the insertion hole, and its lower section is a cylindrical hole. The bottom of the output terminal base is provided with protruding legs, at least two legs, the length of which is greater than the thickness of the physiological signal output circuit board. A slot is provided on the leg, and the distance between the slot and the bottom of the output terminal base is the thickness of the physiological signal output circuit board. The physiological signal output circuit board is provided with a groove that matches the leg. When fixed, the leg is inserted into the groove, and the physiological signal output terminal is fixed on the circuit board by a retaining ring or spring clip that is inserted into the slot.

[0016] Preferably, there are two, three, or four legs, which are evenly distributed on the bottom surface of the output terminal base.

[0017] Preferably, the combined elastic element includes a ball, a spring, and a screw.

[0018] Preferably, the combined elastic element includes a dome plate, a spring, and screws that are integrally or separately connected to the base plate.

[0019] Preferably, the combined elastic element includes a base plate, a spring sheet fixed at one end to the base plate, and screws.

[0020] Preferably, the combined elastic element includes a ball, a spring, and a push rod.

[0021] Preferably, the combined elastic element includes a dome plate, a spring, and a top rod that are integrally or separately connected to the base plate.

[0022] Preferably, the combined elastic element includes a base plate, a spring sheet fixed at one end to the base plate, and a top rod.

[0023] The beneficial effects of adopting the above technical solution are as follows:

[0024] This invention enables different connection methods by setting a snap-on male connector and a plug hole on the output terminal. By setting a combined elastic element that protrudes into the plug hole, the insertion of pins or banana plugs is more secure under the action of the combined elastic element. At the same time, the plug hole can accommodate pins or banana plugs of different sizes and specifications. By setting legs and slots at the bottom of the output terminal, the single bolt fixing method is changed, making it more reliable and secure when fixed to the circuit. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the physiological signal output terminal of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the physiological signal output terminal of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of embodiment 3 of the physiological signal output terminal of the present invention;

[0028] Figure 4 This is a half-sectional structural diagram of Embodiment 1 of the physiological signal output terminal of the present invention with built-in combined elastic element;

[0029] Figure 5 This is the present invention. Figure 4 Enlarged view of part A;

[0030] Figure 6This is a half-sectional structural diagram of Embodiment 2 of the physiological signal output terminal of the present invention with built-in combined elastic element;

[0031] Figure 7 This is a half-section structural diagram of Embodiment 3 of the physiological signal output terminal of the present invention, which incorporates a combined elastic element. Detailed Implementation

[0032] The invention will now be described in further detail with reference to the accompanying drawings:

[0033] This invention relates to a physiological signal output terminal and an analog device including the terminal. By improving the structure of the physiological signal output terminal, it is made suitable for various connection methods, including snaps, pins, or banana plugs, and the connection is reliable. It is not only suitable for instruments for physiological signal testing and acquisition, but also for other instruments that use snaps, pins, or banana plugs for electrical connection, thus having a wide range of applications.

[0034] Example 1

[0035] like Figure 1 As shown, a physiological signal output terminal includes a cylindrical output terminal base 4. A protruding snap-fit ​​portion 1 matching the snap-fit ​​female body is provided on the top of the output terminal base for adaptation with the snap-fit ​​female body. A plug hole 2 with a diameter of 4.0 mm is provided on the output terminal base for adaptation with existing banana plugs. In order to adapt to 3.0 mm pins, a central hole is provided on the output terminal base. The upper end of the central hole is connected to the plug hole 3. A combined elastic member is provided in the central hole. The upper part of the combined elastic member is exposed in the plug hole and forms an elastic crimp with the pin or banana plug inserted into the plug hole.

[0036] Figure 4 The diagram shows Embodiment 1 of a combined elastic element, comprising a small ball 7, a spring 8, and a screw 9. The spring is located between the small ball and the screw, and all three are fixed in a central hole by the screw, with the small ball partially exposed in the insertion hole. The small ball can be made of metal or non-metal, and the spring can also be other elastic devices, as long as they are elastic and stretchable. Due to the presence of the spring, the insertion hole can accommodate pins or banana plugs of different sizes, or pins or banana plugs with deformed diameters. With the above structure, when a pin is inserted, the small ball is compressed by the spring, and simultaneously, part of the small ball retracts into the central hole. Under the pressure of the spring, the small ball automatically presses against the pin, ensuring good contact between the pin and the output terminal base 4. Because of the use of a small ball, the contact between the pin and the small ball is smooth when the pin is inserted, facilitating plug insertion and removal.

[0037] To facilitate the assembly of the ball and enable its function, the center hole is a through hole that communicates with the insertion hole, and its lower section is a threaded hole. The threaded hole is used to install screws to tighten the spring and the ball, and can also be used to fix the output terminal.

[0038] This embodiment is applicable to a variety of instruments and meters. The output terminal base of this embodiment is cylindrical. To adapt to different occasions, it can be modified into a square prism or a hexagonal prism, etc., without departing from the protection scope of this invention.

[0039] Figure 6 The illustration shows Embodiment 2 of the combined elastic element, which includes a dome plate 11, a spring 8, and a screw 9, all integrally or separately connected to the base plate 10. The spring is located between the base plate and the screw. The dome plate, base plate, spring, and screw are sequentially fixed in the central hole by the screw, with the dome plate protruding into the insertion hole. This embodiment of the combined elastic element differs from Embodiment 1 only in that the base plate and dome plate, which are integrally or separately connected, replace the small ball; the working principle is the same as in Embodiment 1.

[0040] Figure 7 The diagram shows Embodiment 3 of the combined elastic element, which includes a base plate 10, a spring piece 12 fixed to the base plate at one end, and a screw 9. The base plate is fixed in a central hole by the screw, and the spring piece protrudes into the insertion hole. This embodiment of the combined elastic element differs from Embodiment 1 in that the spring is omitted, and the spring piece protruding into the insertion hole achieves elastic compression with the pin or banana plug.

[0041] Example 2

[0042] like Figure 2 As shown, this embodiment is mainly used for fixing the output terminal to the circuit board.

[0043] In this embodiment, the output terminal is used for a physiological signal simulator. The physiological signal simulator includes at least a physiological signal output circuit board, on which the physiological signal output terminal is fixed, hereinafter referred to as the output terminal. If the output terminal adopts the structure of Embodiment 1, then the output terminal will be fixed to the physiological signal output circuit board by screws. Due to the screw fixing, it may loosen after being moved, touched, or used for a long time, affecting the signal output quality. Therefore, when fixing to the circuit board, this embodiment provides a better fixing effect.

[0044] Compared to Embodiment 1, this embodiment features a protruding leg 5 at the bottom of the output terminal base 4. The length of the leg 5 is less than or equal to the thickness of the physiological signal output circuit board (facilitating screw fixing of the terminal). The circuit board has grooves that match the leg. During fixing, the leg is inserted into the groove, and the output terminal is fixed to the circuit board with screws. The position of the leg should facilitate determining the orientation of the output terminal hole (i.e., the unique orientation of the hole can be determined after designing the circuit board according to the leg shape). This design facilitates installation when the orientation of multiple output terminal holes needs to be determined, saving time in finding the hole orientation. To ensure secure fixing, there are two, three, or four legs, evenly distributed on the bottom surface of the output terminal base.

[0045] Example 3

[0046] Example 2 describes one method of fixing the output terminal to the circuit board. This example provides another fixing method. The difference between this example and Example 1 is that the threaded hole at the lower section of the central hole is omitted, and a through hole is used. The bottom of the output terminal base 4 has protruding legs 5, at least two legs, with a length greater than the thickness of the physiological signal output circuit board. A slot 6 is provided on the leg, the distance between the slot 6 and the bottom of the output terminal base being the thickness of the physiological signal output circuit board. The physiological signal output circuit board has grooves that match the legs. During fixing, the legs are inserted into the grooves, and the physiological signal output terminal is fixed to the circuit board by a retaining ring or spring clip that engages with the slot. To ensure a secure fixation, there are two, three, or four legs, evenly distributed on the bottom surface of the output terminal base. For even greater stability, after fixing, the bottom of the output terminal can be soldered to the pads on the circuit board to increase the strength. Because the threaded hole is omitted in this example, the screws in Examples 1, 2, or 3 of the combined elastic element are replaced with push rods.

Claims

1. A physiological signal output terminal, characterized in that: It includes a cylindrical output terminal base, a protruding snap-fit ​​part matching the snap fastener body is provided on the top of the output terminal base, a plug hole is provided on the output terminal base, a central hole is provided on the output terminal base, the upper end of the central hole is connected to the plug hole, a combined elastic element is provided in the central hole, the upper part of the combined elastic element is exposed into the plug hole, and forms an elastic crimp with the pin or banana plug inserted into the plug hole; The central hole is a through hole that communicates with the insertion hole, and its lower section is a threaded hole or a cylindrical hole; The lower section is a threaded hole. The bottom of the output terminal base is provided with a protruding leg. The length of the leg is less than or equal to the thickness of the physiological signal output circuit board. The circuit board is provided with a groove that matches the leg. When fixed, the leg is inserted into the groove and the physiological signal output terminal is fixed to the circuit board by screws. The lower section is a cylindrical hole. The bottom of the output terminal base is provided with protruding legs. There are at least two legs. The length of the legs is greater than the thickness of the physiological signal output circuit board. There is a slot on the leg. The distance between the slot and the bottom of the output terminal base is the thickness of the physiological signal output circuit board. The physiological signal output circuit board is provided with a groove that matches the leg. When fixed, the leg is inserted into the groove, and the physiological signal output terminal is fixed on the circuit board by a retaining ring or spring clip that is inserted into the slot.

2. A physiological signal simulator, comprising a physiological signal output circuit board, wherein physiological signal output terminals are fixed on the physiological signal output circuit board, characterized in that: The physiological signal output terminal includes a cylindrical output terminal base, a protruding snap-fit ​​part matching the snap fastener body is provided on the top of the output terminal base, an insertion hole is provided on the output terminal base, a central hole is provided on the output terminal base, the upper end of the central hole communicates with the insertion hole, a combined elastic element is provided in the central hole, the upper part of the combined elastic element protrudes into the insertion hole, and forms an elastic compression with the pin or banana plug inserted into the insertion hole; The central hole is a through hole that communicates with the insertion hole, and its lower section is a threaded hole or a cylindrical hole; The lower section is a threaded hole, and the bottom of the output terminal base is provided with a protruding leg. The length of the leg is less than or equal to the thickness of the physiological signal output circuit board. The circuit board is provided with a groove that matches the leg. When fixed, the leg is inserted into the groove, and the physiological signal output terminal is fixed to the circuit board by screws. The combined elastic element includes a small ball, a spring, and a screw. The lower section is a cylindrical hole. The bottom of the output terminal base has protruding legs, at least two of which are longer than the thickness of the physiological signal output circuit board. Each leg has a slot, the distance between the slot and the bottom of the output terminal base being the thickness of the physiological signal output circuit board. The physiological signal output circuit board has grooves that match the legs. During fixing, the legs are inserted into the grooves, and the physiological signal output terminal is fixed to the circuit board by a retaining ring or spring clip that engages with the slots. The combined elastic element includes a small ball, a spring, and a push rod. The legs are two, three, or four in number and are evenly distributed on the bottom surface of the output terminal base.

Images