Pedal switching structure and medical equipment

Abstract

The utility model discloses a pedal switching structure and medical equipment, and relates to the technical field of medical instruments, the pedal switching structure comprises a pedal device, an optical signal assembly and a control module; the pedal device comprises a mounting base, a pedal assembly and a reflector plate, the pedal assembly is rotationally connected to the mounting base, and the reflector plate is arranged on one side of the pedal assembly; the optical signal assembly comprises an optical transmitter and a plurality of optical receivers, the light emitting side of the optical transmitter and the light receiving sides of the optical receivers face the reflector plate, and the optical receivers convert optical signals into electric signals; the control module is in communication connection with the light signal assembly, controls the light emitter to emit light towards the reflector plate and receives an electric signal output by the light receiver; the pedal assembly is treaded to drive the reflector plate to rotate, and the reflector plate reflects light emitted by the light emitter to different light receivers. According to the invention, the pedal switching structure generates different electric signals in a light path adjusting mode, excessive electric structures are not needed, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a foot pedal switching structure and medical device. Background Technology

[0002] Foot switches, as important control devices, play a crucial role in industrial and medical fields. They are primarily used to control the start and stop of equipment, as well as the switching of operating modes. Currently, foot switches on the market are mainly divided into three types: pneumatic, electronic, and optically shielded. In the field of medical treatment equipment, in addition to controlling the start and stop of the equipment, foot switches also need to perform pre-treatment operations and switch treatment modes according to different treatment scenarios and requirements, such as probe cooling, water / gas circuit flushing, and adjusting treatment power, and high control precision is required. Therefore, foot switches in medical equipment are usually electronic switches, with multiple electronic detection switches installed inside. Changing the foot pedal travel triggers different detection switches to achieve different operational purposes.

[0003] However, existing electronic switch-type foot switches have multiple internal electronic detection switches, which requires connecting the foot switch to the device's electrical system, resulting in a complex electrical system and structure. Utility Model Content

[0004] The main purpose of this invention is to propose a foot-operated switching structure and medical device, which aims to solve the problems of existing foot-operated switches having certain safety risks and high operating costs.

[0005] To achieve the above objectives, this utility model proposes a foot pedal switching structure, which includes a foot pedal device, an optical signal component, and a control module. The foot pedal device includes a mounting base, a foot pedal component, and an optical path adjustment component. The foot pedal component is rotatably connected to the mounting base, and the optical path adjustment component is movably disposed on one side of the foot pedal component. The optical signal component includes a light emitter and multiple light receivers. The light-emitting side of the light emitter and the light-receiving side of the multiple light receivers are both disposed facing the optical path adjustment component. The light receivers are used to convert optical signals into electrical signals. The control module is communicatively connected to the optical signal component. The control module controls the light emitter to emit light towards the optical path adjustment component and receives the electrical signals output by the light receivers. Stepping on the foot pedal component moves the optical path adjustment component, and the reflector transmits the light emitted by the light emitter to different light receivers.

[0006] In one embodiment of the present invention, the optical path adjustment component includes a reflector sheet, which is movably disposed on one side of the foot pedal assembly and is used to reflect the light emitted by the light emitter to different light receivers.

[0007] In one embodiment of this utility model, the center of the reflector is at the same height as the rotation axis of the foot pedal assembly.

[0008] In one embodiment of this utility model, the foot pedal assembly includes a pedal and a transmission component. Both the pedal and the transmission component are rotatably connected to the mounting base. The pedal is driven to the transmission component. Stepping on the pedal drives the transmission component to rotate. The reflector is disposed on the transmission component.

[0009] In one embodiment of this utility model, the transmission component includes a reduction gear shaft and a transmission shaft. The pedal, the transmission shaft, and the reduction gear shaft are sequentially connected in a transmission manner. The reflector is mounted on the reduction gear shaft. Stepping on the pedal drives the transmission shaft to move, thereby driving the reduction gear shaft to rotate, and in turn driving the reflector to rotate.

[0010] In one embodiment of this utility model, the optical receiver includes an optical receiving element, an optical fiber, and a photoelectric conversion element. The optical receiving element is communicatively connected to the photoelectric conversion element through the optical fiber, and the optical receiving side of the optical receiving element is disposed facing the reflector.

[0011] In one embodiment of this invention, a plurality of light-receiving elements are spaced apart around the rotation center of the reflector.

[0012] In one embodiment of the present invention, the optical receiver further includes an optical transceiver element and a circulator. The optical transceiver element is used to emit and receive light. When the foot pedal assembly is in an unpedaled state, the reflective surface of the reflective sheet is parallel to the optical transceiver surface of the optical transceiver element. The optical emitter, the optical transceiver element, and the photoelectric conversion element are all connected to the circulator.

[0013] In the untrodden state, the light emitted by the light emitter passes sequentially through the circulator, the optical transceiver element, the reflector, the optical transceiver element, and the circulator, and is transmitted to the photoelectric conversion element.

[0014] In one embodiment of this utility model, the foot pedal switching structure further includes a flange, which is sleeved on the outer periphery of the plurality of optical fibers, and the optical receiving element is mounted on the flange.

[0015] In one embodiment of this utility model, the control module includes an amplifier circuit, which is electrically connected to the optical receiver and is used to amplify the electrical signal output by the optical receiver.

[0016] This utility model also proposes a medical device, which includes a device body and a foot pedal switching structure as described above; the foot pedal device and the optical signal component are installed alternately on the device body, and the control module is communicatively connected to the device body.

[0017] This invention proposes a foot-operated switching structure comprising a foot pedal device, an optical signal component, and a control module. The foot pedal device includes a mounting base, the foot pedal assembly, and an optical path adjustment component. The foot pedal assembly is rotatably connected to the mounting base, and the optical path adjustment component is movably positioned on one side of the foot pedal assembly. The optical signal component includes a light emitter and multiple light receivers. The light-emitting side of the light emitter and the light-receiving sides of the multiple light receivers are both positioned facing the optical path adjustment component. The light receivers convert the optical signals into electrical signals. The control module is communicatively connected to the optical signal component. When the foot pedal assembly is stepped on, it moves the optical path adjustment component, which transmits the light emitted by the light emitter to different light receivers. The corresponding light receiver converts the optical signals into electrical signals and outputs the electrical signals to the control module. The control module outputs electrical signals based on the received signals from different light receivers, controlling the main body of the medical device and switching it to the corresponding mode. Because this foot-operated switching structure uses photoelectric transmission to achieve mode control and switching, it has high sensitivity and accuracy. Moreover, it only requires an optical path adjustment component and an optical signal component to achieve the foot-operated switching structure to emit different electrical signals, eliminating the need for excessive electrical structures and resulting in a simple structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic diagram of an embodiment of the foot pedal switching structure provided by this utility model;

[0020] Figure 2 A schematic diagram of another embodiment of the foot pedal switching structure provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the foot pedal device, optical receiving element, optical transceiver element, and optical fiber in the first embodiment;

[0022] Figure 4 This is a schematic diagram of the foot pedal device, optical receiving element, optical transceiver element, and optical fiber in the second embodiment;

[0023] Figure 5This is a schematic diagram of the structure of the foot pedal device, optical receiving element, optical transceiver element, and optical fiber in the third embodiment.

[0024] Explanation of icon numbers:

[0025] 1. Foot pedal switching structure; 10. Foot pedal device; 11. Foot pedal assembly; 111. Pedal; 112. Transmission component; 112a. Reduction gear shaft; 112b. Drive shaft; 113. Connecting shaft; 12. Optical path adjustment component; 121. Reflector; 13. Mounting base; 20. Optical signal assembly; 21. Optical transmitter; 22. Optical receiver; 221. Optical receiving element; 222. Optical fiber; 223. Photoelectric conversion element; 23. Circulator; 24. Optical transceiver element; 30. Control module; 31. Amplifier circuit; 32. Main control board; 40. Flange; 50. Main unit.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] 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 scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a foot pedal switching structure 1.

[0031] Combination Figure 1 and Figure 2 As shown, in one embodiment of this utility model, the foot pedal switching structure 1 includes a foot pedal device 10, an optical signal component 20, and a control module 30. The foot pedal device 10 includes a mounting base 13, a foot pedal component 11, and an optical path adjustment component 12. The foot pedal component 11 is rotatably connected to the mounting base 13, and the optical path adjustment component 12 is movably disposed on one side of the foot pedal component 11. The optical signal component 20 includes a light emitter 21 and multiple light receivers 22. The light-emitting side of the light emitter 21 and the light-receiving side of the multiple light receivers 22 are both disposed facing the optical path adjustment component 12. The light receivers 22 are used to convert the optical signal into an electrical signal. The control module 30 is communicatively connected to the optical signal component 20. The control module 30 controls the light emitter 21 to emit light towards the optical path adjustment component 12 and receives the electrical signal output by the light receivers 22. Stepping on the foot pedal component 11 drives the optical path adjustment component 12 to move, and the optical path adjustment component 12 transmits the light emitted by the light emitter 21 to different light receivers 22.

[0032] The foot pedal switching structure 1 proposed in this application can be applied to different types of medical devices and used to switch treatment modes or working states.

[0033] In this embodiment, the foot pedal device 10 includes a mounting base 13, a foot pedal assembly 11, and an optical path adjustment component 12. The foot pedal assembly 11 is rotatably connected to the mounting base 13 via a pivot pin, ensuring smooth rotational movement. The mounting base 13 is made of a robust metal (e.g., stainless steel or aluminum alloy) or plastic frame to provide sufficient mechanical strength. The mounting base 13 can be flexibly designed into circular, square, or elliptical shapes according to the actual application environment to better adapt to different installation spaces. One or more springs are embedded inside the foot pedal assembly 11. When the user applies pressure to the foot pedal assembly 11, the springs can buffer the impact force and ensure that the pedal 111 automatically returns to its original position without external force. The optical path adjustment component 12 can be a reflective sheet, a refractive sheet, or a light guide rod, or other structures that can adjust the light propagation path. The optical path adjustment component 12 is movably disposed on one side of the foot pedal assembly 11 so that it can move in various ways such as translation, rotation, flipping or swinging under the drive of the foot pedal assembly 11, so that the incident light enters the optical path adjustment component 12 and undergoes reflection, refraction or transmission at different angles. When the light emitted by the light emitter 21 passes through the optical path adjustment component 12, the light propagation path changes, and the light is transmitted to different light receivers 22 through the movement of the optical path adjustment component 12.

[0034] The optical signal assembly 20 consists of a light emitter 21 and multiple light receivers 22, all located within the main unit 50 of the medical device, rather than inside the foot pedal 10. The optical signal assembly 20 is spaced apart from the foot pedal 10, and the light-emitting side of the light emitter 21 and the light-receiving side of the light receivers 22 are both oriented towards the reflector 121. The light emitter 21 may be, for example, a laser diode, which generates a laser beam with good directionality and monochromaticity, contributing to improved detection accuracy. The number of light receivers 22 can be adjusted according to actual needs; for example, three light receivers 22 can be configured to achieve detection in three different states. Each light receiver 22 is equipped with a photoelectric conversion element 223, which converts the received optical signal into an electrical signal for transmission to the control module 30 for processing.

[0035] The control module 30, acting as the control center of the foot pedal switching structure 1, is responsible for controlling the light emitter 21 to emit light and responding according to preset logic by receiving electrical signals from different light receivers 22. Simultaneously, it controls the main unit 50 of the medical device to switch between different working modes or states. The medical device can be an ultrasound therapy device, radiofrequency therapy device, or phototherapy device, etc. For example, when the medical device is an ultrasound therapy device, the main unit 50 is communicatively connected to the ultrasound therapy head and, under the control of the foot pedal switching structure 1, switches between different working modes or states, such as controlling the ultrasound therapy head to turn on or off to emit ultrasound waves, and increasing or decreasing the energy of the ultrasound waves emitted by the ultrasound therapy head. The control module 30 contains a microprocessor or PLC controller and can communicate with other medical devices via wireless or wired interfaces, facilitating integration into a wider range of systems.

[0036] When the user presses down on the foot pedal assembly 11, the optical path adjuster 12 moves accordingly. This action alters the optical transmission path, allowing light to be transmitted to the light receiver 22 at a designated location, triggering a corresponding control command. This non-contact sensing mechanism not only improves the system's response speed but also reduces mechanical wear and extends its service life.

[0037] Combination Figure 2 As shown, this application mounts the foot pedal assembly 11 and the optical path adjustment component 12 in the mounting base 13, assembling them to form a foot pedal device 10. This foot pedal device 10 is an independent structure, and there are no electronic components within it. Meanwhile, the light emitter 21, amplifier circuit 31, and main control board 32, which involve circuit components, are all integrated into the main unit 50 of the medical device. The foot pedal device 10 and the main unit 50 are two independent structures. Since the entire foot pedal device 10 does not involve any electrical connections or electronic components, there is no need for safety testing of the foot pedal device 10, reducing the need for regular maintenance and eliminating safety hazards caused by electrical faults, thus lowering operating costs.

[0038] Combination Figures 3 to 5 As shown, in one embodiment of the present invention, the optical path adjustment component 12 includes a reflector 121, which is movably disposed on one side of the foot pedal assembly 11 and is used to reflect the light emitted by the light emitter 21 to different light receivers 22.

[0039] In this embodiment, the optical path adjustment component 12 is a reflector 121. Compared with the refractive plate and the light guide rod, the reflector 121 has a more effective ability to adjust the light propagation path, which makes it easier to transmit light to different light receivers 22. At the same time, the reflector 121 can also reduce the loss of light during the path adjustment process and improve the quality of optical signal transmission.

[0040] A reflective sheet 121 is disposed on one side of the foot pedal assembly 11. The reflective sheet 121 is made of a high-reflectivity material, such as silver-plated glass or an aluminum mirror, to improve the reflectivity of the laser signal. The reflective sheet 121 is fixed to the foot pedal assembly 11 by means of adhesive bonding, snap-fitting, etc., and rotates synchronously with the foot pedal assembly 11. Therefore, stepping on the foot pedal assembly 11 will drive the reflective sheet 121 to rotate, thereby achieving the purpose of changing the reflection path of the laser beam.

[0041] To more clearly describe the structure and working principle of the foot pedal switching structure 1 of this application, the applicant provides the following three embodiments.

[0042] First embodiment:

[0043] like Figures 1-3 As shown, in this embodiment, the foot pedal assembly 11 includes a pedal 111, a reflector 121 mounted on the pedal 111, and the center of the reflector 121 is at the same height as the rotation axis of the pedal 111. For example Figure 3 As shown, the rotation axis of the pedal 111 is located at its top end, and the reflector 121 is attached to the top end of the pedal 111. When the pedal 111 is stepped on, the pedal 111 rotates counterclockwise around its top end, causing the reflector 121 to rotate as well. The reflector 121 reflects the incident laser beam to the light receiving element 221 of the preset light receiver 22. The pedal 111 is connected to the mounting base 13 by a pivot pin, forming a rotatable structure. The pivot pin serves as the rotation axis, ensuring that the pedal 111 can rotate smoothly around it when an external force is applied.

[0044] Second embodiment:

[0045] Combination Figure 4 As shown, in one embodiment of the present invention, the foot pedal assembly 11 includes a pedal 111 and a transmission component 112. Both the pedal 111 and the transmission component 112 are rotatably connected to the mounting base 13. The pedal 111 is driven to the transmission component 112. Stepping on the pedal 111 drives the transmission component 112 to rotate. A reflector 121 is disposed on the transmission component 112.

[0046] In this embodiment, the pedal 111 and the transmission component 112 are rotatably connected via a connecting shaft 113. The end of the pedal 111 facing away from the connecting shaft 113 is rotatably connected to the mounting base 13, and the end of the transmission component 112 facing away from the connecting shaft 113 is rotatably connected to the mounting base 13 or other mounting structure. Therefore, when the pedal 111 is stepped on, the pedal 111 rotates clockwise with the end facing away from the connecting shaft 113 as the fulcrum, and drives the transmission component 112 to rotate via the connecting shaft 113. The transmission component 112 rotates counterclockwise with the end facing away from the connecting shaft 113 as the fulcrum. The reflector 121 is disposed at the end of the transmission component 112 facing away from the connecting shaft 113, that is, at the same height as the rotation center of the transmission component 112. Therefore, the transmission component 112 can drive the reflector 121 to rotate counterclockwise, and the rotation fulcrum of the reflector 121 coincides with or is close to the center of the reflector 121.

[0047] Third embodiment:

[0048] The transmission component 112 includes a reduction gear shaft 112a and a transmission shaft 112b. The pedal 111, the transmission shaft 112b, and the reduction gear shaft 112a are connected in sequence for transmission. The reflector 121 is installed on the reduction gear shaft 112a. Stepping on the pedal 111 drives the transmission shaft 112b to move, thereby driving the reduction gear shaft 112a to rotate, which in turn drives the reflector 121 to rotate.

[0049] In this embodiment, when the pedal 111 is stepped on, the pedal 111 drives the transmission shaft 112b to move, which in turn drives the reduction gear shaft 112a to rotate. The transmission shaft 112b and the reduction gear shaft 112a are connected by a gear set. This design not only reduces the speed of the pedal 111 but also increases the torque, making the rotation of the reflector 121 more stable and precise.

[0050] In addition, by mounting the reflector 121 on the reduction gear shaft 112a, it is easier to make the center of the reflector 121 coincide with the rotation center of the reflector 121, thereby improving control accuracy and assembly convenience.

[0051] Furthermore, in combination Figure 5 As shown, the transmission component 112 includes two transmission shafts 112b and two reduction gear shafts 112a. The pedal 111, one transmission shaft 112b, one reduction gear shaft 112a, another transmission shaft 112b, and another reduction gear shaft 112a are sequentially connected in a transmission manner. The reflector 121 is mounted on the other reduction gear shaft 112a. A two-stage transmission reduction structure is provided between the pedal 111 and the reflector 121, which can further improve the smoothness and accuracy of the reflector 121's rotation through the reduction gear shaft 112a. Additionally, as... Figure 5As shown, when pedal 111 is pressed, pedal 111 rotates clockwise, driving a transmission shaft 112b downwards via connecting shaft 113. Simultaneously, this drives a reduction gear shaft 112a to rotate counterclockwise, thereby driving another transmission shaft 112b upwards, which in turn drives another reduction gear shaft 112a to rotate clockwise. This ensures that the reflector 121 and pedal 111 rotate in the same direction. Therefore, this application can achieve the same or opposite rotation of reflector 121 and pedal 111 by changing the number of transmission shafts 112b and reduction gear shafts 112a, thus facilitating structural layout and assembly convenience, and meeting the needs of different users.

[0052] Combination Figures 3 to 5 As shown, in one embodiment of the present invention, the center of the reflector 121 coincides with the rotation center of the reflector 121.

[0053] As can be seen from the above three embodiments, since the center of the reflector 121 coincides with its rotation center, the center position of the reflector 121 remains unchanged during rotation. This arrangement reduces the rotation radius of the reflector 121 as it rotates with the pedal 111, thereby reducing optical path deviation caused by mechanical errors and improving detection accuracy. In other embodiments, the center of the reflector 121 can be set to be close to its rotation center to minimize the rotation radius of the reflector 121 as much as possible.

[0054] Combination Figures 1 to 5 As shown, in one embodiment of the present invention, the optical receiver 22 includes an optical receiving element 221, an optical fiber 222, and a photoelectric conversion element 223. The optical receiving element 221 is communicatively connected to the photoelectric conversion element 223 through the optical fiber 222, and the optical receiving side of the optical receiving element 221 is disposed facing the reflector 121.

[0055] In this embodiment, the light receiving element 221 is responsible for receiving the laser signal reflected back from the reflector 121. It typically employs a high-sensitivity photodiode or other photosensitive device, which can efficiently receive the light signal. To ensure optimal reception, the light receiving side of the light receiving element 221 can be configured with a large area and positioned towards the reflector 121 to accurately capture the laser light reflected back from the reflector 121.

[0056] Optical fiber 222 serves as a transmission medium to transmit the optical signal captured by optical receiving element 221 to photoelectric conversion element 223.

[0057] The photoelectric conversion element 223 is responsible for converting the optical signal transmitted through the optical fiber 222 into an electrical signal, which is then transmitted to the control module 30 for processing. The photoelectric conversion element 223 can also integrate a filtering circuit to remove noise interference and improve the system's anti-interference capability. The entire optical receiver 22 is designed to achieve efficient conversion from optical signals to electrical signals, ensuring the system's accurate identification of different states of the foot pedal component 11.

[0058] Firstly, by connecting the optical receiving element 221 and the photoelectric conversion element 223 via optical fiber 222, non-electrical contact signal transmission of the foot pedal device 10 is achieved, avoiding potential safety hazards associated with traditional electrical connections. Simultaneously, the photoelectric conversion element 223 can be used to convert the optical signal into an electrical signal to meet the control precision requirements of medical equipment.

[0059] Combination Figures 3 to 5 As shown, in one embodiment of this utility model, a plurality of light receiving elements 221 are arranged at intervals around the rotation center of the reflector 121.

[0060] In this embodiment, multiple light receiving elements 221 are spaced apart around the rotation center of the reflector 121. This design enables the light receiver 22 to better receive the light signals emitted by the reflector 121 when the reflector 121 is at different rotation angles, which facilitates the function of switching different states or modes by foot pedal.

[0061] To further optimize this design, the relative position between the light receiving element 221 and the reflector 121 can be adjusted by a fine-tuning device to accommodate different installation errors or mechanical deviations.

[0062] Combination Figures 3 to 5 As shown, in one embodiment of the present invention, a light receiver 22 further includes a light transceiver element 24 and a circulator 23. The light transceiver element 24 is used to emit and receive light. When the foot pedal assembly 11 is in an unpedaled state, the reflective surface of the reflective sheet 121 is parallel to the light transceiver surface of the light transceiver element 24. The light emitter 21, the light transceiver element 24, and a photoelectric conversion element 223 are all connected to the circulator 23.

[0063] When not stepped on, the light emitted by the light emitter 21 passes sequentially through the circulator 23, the optical transceiver element 24, the reflector 121, the optical transceiver element 24, the circulator 23, and is transmitted to the photoelectric conversion element 223.

[0064] In this embodiment, when the foot pedal assembly 11 is in an unpedaled state, the reflective surface of the reflective sheet 121 is parallel to the light transceiver surface of the light transceiver element 24. This ensures the alignment accuracy of the optical path and improves the detection accuracy of the control module 30 in the unpedaled state.

[0065] The optical transceiver element 24 integrates both transmitting and receiving functions, and incorporates a high-sensitivity laser diode and a photodiode, enabling bidirectional communication along the same optical path. This design not only simplifies the system structure but also improves the efficiency and reliability of optical signal transmission. The circulator 23 manages the directionality of optical signal transmission, ensuring that the light emitted by the optical transmitter 21 enters the optical transceiver element 24, is then emitted by the optical transceiver element 24 to the reflector 121, and finally returns to the photoelectric conversion element 223 for processing.

[0066] When the foot pedal assembly 11 is not in the pedaled state, the reflective surface of the reflector 121 remains parallel to the optical transceiver surface of the optical transceiver element 24. This design ensures the optimal state of the optical path, allowing the light emitted by the optical transmitter 21 to propagate along a predetermined path. Specifically, the light emitted by the optical transmitter 21 first enters the optical transceiver element 24 through the circulator 23, and then the optical transceiver element 24 emits the beam, illuminating the reflector 121. Since the reflector 121 is parallel to the optical transceiver surface of the optical transceiver element 24, the reflected beam can accurately re-enter the optical transceiver element 24 and be transmitted to the photoelectric conversion element 223 through the circulator 23. The photoelectric conversion element 223 converts the received optical signal into an electrical signal and transmits it to the control module 30 for further processing.

[0067] In summary, this design not only improves the accuracy and stability of optical path switching, but also enhances the integration of the structure, reduces structural costs, and improves space utilization.

[0068] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the foot pedal switching structure 1 further includes a flange 40, which is sleeved on the outer periphery of a plurality of optical fibers 222, and the optical receiving element 221 is installed on the flange 40.

[0069] In this embodiment, the design of flange 40 not only provides robust protection and support for optical fiber 222, but also ensures the precise installation and positioning of optical receiving element 221, thereby improving the stability and reliability of the system.

[0070] Flange 40 is made of high-strength metal materials (such as stainless steel or aluminum alloy), possessing excellent mechanical strength and corrosion resistance, effectively protecting the internal multi-core optical fiber 222 from external physical damage. The inner diameter of flange 40 is slightly larger than the diameter of the optical fiber bundle 222 to ensure smooth passage of the fiber 222 and maintain appropriate tightness, preventing damage due to excessive tightness or impact on signal transmission quality due to excessive looseness. A sealing ring is provided at one end of flange 40 to prevent dust and moisture ingress, further enhancing the system's protection level. Flange 40 is connected to the equipment body via threaded connections or other reliable fixing methods, facilitating installation and maintenance.

[0071] The optical receiving element 221 is installed at a pre-set position on the flange 40 to ensure that the optical receiving side of each optical receiving element 221 is accurately aligned with the reflector 121. The flange 40 is equipped with a fine-tuning device, which allows for minor adjustments during installation to ensure the precise position of the optical receiving element 221, thereby optimizing the optical path and improving the accuracy and stability of optical signal reception.

[0072] Combination Figure 1 and Figure 2 As shown, multiple optical fibers 222 inside the mounting base 13 are wrapped in an insulating varnish layer, forming a single cable. However, internally, there are still four independent optical fibers 222. One end of this cable is fixed to the foot pedal 10, and the other end is fixed to the outer wall of the mounting base 13. Similarly, the four optical fibers 222 inside the main unit 50 are also wrapped in an insulating varnish layer, forming a single cable that extends out of the main unit 50 and is fixedly connected to the flange 40. During the assembly of the medical device, the flange 40 is inserted into the corresponding hole in the mounting base 13, allowing the two cables to connect and form four independent optical paths. Figure 2 It is known that the foot pedal assembly 11, reflector 121, and optical fiber 222 within the foot pedal device 10 are not electronic components, and the foot pedal device 10 does not contain any other electronic components. Furthermore, all structures involving electronic components are integrated into the main unit 50 of the medical device. Since the foot pedal device 10 and the main unit 50 are two independent structures, there is no need to perform safety inspections on the foot pedal device 10 during daily use, reducing the need for regular maintenance and eliminating safety hazards caused by electrical faults.

[0073] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the control module 30 includes an amplifier circuit 31, which is electrically connected to the optical receiver 22 and is used to amplify the electrical signal output by the optical receiver 22.

[0074] In this embodiment, the control module 30 includes a main control board 32 and an amplifier circuit 31 disposed on the main control board 32. The main control board 32 can be a PCB circuit control board, on which electronic components such as microprocessors, capacitors, and resistors are disposed. The amplifier circuit 31 is used to enhance the weak electrical signal converted from the optical receiver 22, thereby improving the accuracy and reliability of subsequent signal processing.

[0075] The amplifier circuit 31 includes a high-gain operational amplifier (Op-Amp) and other necessary passive components (such as resistors and capacitors). To adapt to signal strength variations in different application scenarios, the amplifier circuit 31 can also integrate an adjustable gain function, allowing users to adjust the amplification factor according to actual needs, thereby achieving the best signal processing effect.

[0076] This utility model also proposes a medical device, which includes a device body and a foot pedal switching structure 1. The specific structure of the foot pedal switching structure 1 is as described in the above embodiments. Since the medical device adopts all the technical solutions of all the embodiments of the foot pedal switching structure 1, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0077] The foot pedal device 10 and the optical signal component 20 are installed at intervals on the main body of the equipment, and the control module 30 is communicatively connected to the main body of the equipment.

[0078] Since the foot pedal 10 does not contain electronic components and transmits control information via optical signals, the foot pedal 10 and the optical signal component 20 can be installed alternately on the main body of the device. This design improves the convenience of medical device assembly and layout. Furthermore, it eliminates the need for periodic safety inspections of the foot pedal 10, enhancing safety and reducing operating costs. The control module 30 communicates with the main body of the device via a wired or wireless interface, enabling real-time data transmission and processing.

[0079] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A foot pedal switching structure, characterized in that, The foot pedal switching structure includes: A foot pedal device, comprising a mounting base, a foot pedal assembly, and an optical path adjustment component, wherein the foot pedal assembly is rotatably connected to the mounting base, and the optical path adjustment component is movably disposed on one side of the foot pedal assembly; An optical signal assembly, comprising an optical transmitter and multiple optical receivers, wherein the light-emitting side of the optical transmitter and the light-receiving sides of the multiple optical receivers are both disposed facing the optical path adjustment component, and the optical receivers are used to convert the optical signal into an electrical signal; and The control module is communicatively connected to the optical signal component. The control module controls the optical transmitter to emit light toward the optical path adjustment component and receives the electrical signal output by the optical receiver. Stepping on the foot pedal assembly moves the optical path adjustment component, which then transmits the light emitted by the light emitter to different light receivers.

2. The foot pedal switching structure as described in claim 1, characterized in that, The optical path adjustment component includes a reflector, which is movably disposed on one side of the foot pedal assembly and is used to reflect the light emitted by the light emitter to different light receivers.

3. The foot pedal switching structure as described in claim 2, characterized in that, The foot pedal assembly includes a pedal and a transmission component. Both the pedal and the transmission component are rotatably connected to the mounting base. The pedal is driven by the transmission component. Stepping on the pedal drives the transmission component to rotate. The reflector is disposed on the transmission component.

4. The foot pedal switching structure as described in claim 3, characterized in that, The transmission component includes a reduction gear shaft and a transmission shaft. The pedal, the transmission shaft, and the reduction gear shaft are sequentially connected for transmission. The reflector is mounted on the reduction gear shaft. Stepping on the pedal moves the transmission shaft, thereby driving the reduction gear shaft to rotate, which in turn drives the reflector to rotate.

5. The foot pedal switching structure as described in claim 4, characterized in that, The center of the reflector coincides with the center of rotation of the reflector.

6. The foot pedal switching structure as described in any one of claims 3-5, characterized in that, The optical receiver includes an optical receiving element, an optical fiber, and a photoelectric conversion element. The optical receiving element is communicatively connected to the photoelectric conversion element through the optical fiber, and the optical receiving side of the optical receiving element is arranged facing the reflector.

7. The foot pedal switching structure as described in claim 6, characterized in that, The plurality of light-receiving elements are spaced apart around the rotation center of the reflector.

8. The foot pedal switching structure as described in claim 6, characterized in that, The optical receiver further includes an optical transceiver element and a circulator. The optical transceiver element is used to emit and receive light. When the foot pedal assembly is in an unpedaled state, the reflective surface of the reflective sheet is parallel to the optical transceiver surface of the optical transceiver element. The optical emitter, the optical transceiver element, and the photoelectric conversion element are all connected to the circulator. In the untrodden state, the light emitted by the light emitter passes sequentially through the circulator, the optical transceiver element, the reflector, the optical transceiver element, and the circulator, and is transmitted to the photoelectric conversion element.

9. The foot pedal switching structure as described in claim 6, characterized in that, The foot pedal switching structure also includes a flange, which is sleeved on the outer periphery of the plurality of optical fibers, and the optical receiving element is mounted on the flange.

10. The foot pedal switching structure as described in any one of claims 1-5, characterized in that, The control module includes an amplifier circuit, which is electrically connected to the optical receiver and is used to amplify the electrical signal output by the optical receiver.

11. A medical device, characterized in that, The medical device includes a device body and a foot pedal switching structure as described in any one of claims 1-10; the foot pedal device and the optical signal component are installed at intervals on the device body, and the control module is communicatively connected to the device body.

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