Plasma surgical electrode information reading circuit

Abstract

The utility model discloses a kind of plasma surgical electrode information reading circuit, it includes the 1-Wire memory IC3 being arranged in the plug of plasma surgical electrode, microcontroller IC1, 1-Wire bus main controller IC2, opto-isolator circuit being arranged in medical host, opto-isolator circuit includes photocoupler V1, photocoupler V2, microcontroller IC1's TXD end is connected with photocoupler V2 negative input end, RXD end is connected with photocoupler V1 positive output end, photocoupler V2 positive output end, photocoupler V1 negative input end is connected with 1-Wire bus main controller IC2's TXD end, RXD end respectively.The utility model is easy to realize plasma surgical electrode information inquiry and management function, convenient for scale production.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a plasma surgical electrode information reading circuit. Background Technology

[0002] Plasma surgical electrodes are medical devices that use a high-frequency electric field to heat molecules in a medium to an ionized state, forming plasma and generating heat to destroy tissue cells, thereby achieving surgical cutting. As disposable consumables for high-frequency plasma surgical equipment, plasma surgical electrodes have very strict requirements for packaging and sterilization. Once the product is removed from its sterile packaging, activation begins. According to medical industry requirements, if the plasma surgical electrode is activated for more than 24 hours, the stability of plasma formation, cutting or ablation effects, and other performance characteristics may be affected. Furthermore, once removed from its sterile packaging, the plasma surgical electrode is no longer sterile, regardless of whether a surgical procedure has been performed. Therefore, it is recommended to use the plasma surgical electrode within 24 hours of activation to ensure optimal surgical results. Currently, managing the activation time of plasma surgical electrode products is particularly important. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a plasma surgical electrode information reading circuit that is simple in structure and rationally designed.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A plasma surgical electrode information reading circuit is installed in a plasma surgical device consisting of a plasma surgical electrode and a medical host. It includes a 1-Wire memory IC3 installed in the plug of the plasma surgical electrode, a microcontroller IC1, a 1-Wire bus master controller IC2, and an opto-isolation circuit installed in the medical host. The opto-isolation circuit includes optocouplers V1 and V2. The positive input terminal of optocoupler V1 is connected to a 5V power supply via resistor R3, and the positive output terminal of optocoupler V2 is connected to a VCC power supply via resistor R1 and resistor R2, respectively. The negative output terminals of V1 and V2 are both grounded. The TXD terminal of the microcontroller IC1 is connected to the negative input terminal of the optocoupler V2, and the RXD terminal is connected to the positive output terminal of the optocoupler V1. The positive output terminal of the optocoupler V2 and the negative input terminal of the optocoupler V1 are respectively connected to the TXD and RXD terminals of the 1-Wire bus master controller IC2. The VPP terminal of the 1-Wire bus master controller IC2 is connected to the power supply terminal VDD and then connected to a 5V power supply. It is grounded through parallel capacitors C1 and C2. The GND terminal is grounded. The 1-Wire terminal is connected to a 5V power supply through resistor R5 and is connected to the IO terminal of the 1-Wire memory IC3.

[0006] Due to the adoption of the technical solution described above, this utility model has the following advantages:

[0007] This plasma surgical electrode information reading circuit utilizes a low-cost 1-Wire memory. Due to its single-data-line access, it occupies a small installation area, is easy to assemble, and is suitable for installation within the narrow plug of the plasma surgical electrode. The opto-isolation circuit provides bidirectional opto-isolation of data communication signals between the microcontroller and the 1-Wire bus main controller, ensuring normal communication between the medical host and the 1-Wire memory of the plasma surgical electrode. It effectively isolates interference signals from the high-frequency power output line within the handle of the plasma surgical electrode to the medical host and protects the circuitry of the medical host. It facilitates the implementation of plasma surgical electrode information query and management functions, is suitable for mass production, and has significant potential for widespread application.

[0008] This plasma surgical electrode information reading circuit, after the plasma surgical electrode is connected to the medical host, can perform the following functions: query all information related to the product (production serial number); read the default power level and frequency configuration parameters matching the product model; determine whether the product is being used for the first time by using the time stamp, and if the product activation time exceeds 24 hours, it will report a message that the product has expired; and write the product's first opening time (activation time) as the product's time stamp into the plug 1-Wire memory chip of the handle. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a plasma surgical device with the plasma surgical electrode information reading circuit of this utility model;

[0010] Figure 2 This is a schematic diagram of the plasma surgical electrode information reading circuit of this utility model;

[0011] In the diagram: 1 - Handle; 2 - Electrode tip; 3 - Medical main unit; 4 - Socket; 5 - Power switch; 6 - Plug; 7 - 1-Wire memory; 8 - Cable. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0013] like Figure 1 , 2 As shown, the plasma surgical electrode information reading circuit is installed in a plasma surgical device composed of a plasma surgical electrode and a medical host. The plasma surgical electrode includes an electrode tip 2, a handle 1, a cable 8, and a plug 6. The electrode tip 2 is connected to the handle 1. One end of the cable 8 passes through a wiring hole on the handle 1 and is electrically connected to the electrode tip 2. The other end of the cable is connected to the plug 6. The medical host 3 is equipped with a power switch 5 and a socket 4 that mates with the plug 6. The information reading circuit includes a 1-Wire memory 7 installed in the plug of the plasma surgical electrode, a microcontroller IC1, a 1-Wire bus master controller IC2, and an opto-isolation circuit installed in the medical host. The opto-isolation circuit includes optocouplers V1 and V2. The positive input terminal of optocoupler V1 is connected to the positive input terminal of optocoupler V2 via a resistor R3. The output terminals are all connected to a 5V power supply via resistor R4. The positive output terminal of optocoupler V1 is connected to VCC power supply via resistor R1, and the positive input terminal of optocoupler V2 is connected to VCC power supply via resistor R2. The negative output terminals of optocoupler V1 and optocoupler V2 are both grounded. The TXD terminal of microcontroller IC1 is connected to the negative input terminal of optocoupler V2, and the RXD terminal is connected to the positive output terminal of optocoupler V1. The positive output terminal of optocoupler V2 and the negative input terminal of optocoupler V1 are connected to the TXD terminal (pin 7) and RXD terminal (pin 8) of 1-Wire bus master controller IC2, respectively. The VPP terminal (pin 5) of 1-Wire bus master controller IC2 is connected to VDD terminal and then connected to a 5V power supply, and grounded via parallel capacitors C1 and C2. The GND terminal is grounded. The 1-W terminal (pin 2) is connected to a 5V power supply via resistor R5 and is connected to the IO terminal of 1-Wire memory IC3.

[0014] The TXD and RXD terminals of the microcontroller IC1 are the data transmitter and data receiver, respectively.

[0015] The pins of the 1-Wire bus master controller IC2 are as follows: TXD is the data transmitting pin; RXD is the data receiving pin; VPP is the EPROM programming voltage pin; VDD is the power supply pin; 1-W is the 1-Wire input / output pin; and GND is the ground pin.

[0016] Preferably, the 1-Wire memory IC3 uses a DS2433 chip; the microcontroller IC1 uses an STM32F401 chip; and the 1-Wire bus master controller IC2 uses a DS2480S chip.

[0017] The aforementioned DS2433 chip has a unique 64-bit registration number, ensuring the traceability and uniqueness of each device; it uses 1-Wire bus communication, which integrates control, addressing, data and power supply into a single data pin, i.e., the IO terminal, requiring only one data line to connect directly to a single port of the microcontroller, and the communication rate can reach 16.3kbps in standard mode.

[0018] The serial data RXD and TXD signals of the microcontroller IC1 are opto-isolated and then converted into single data line drive signals that can directly drive the 1-Wire memory by the DS2480S chip. The DS2480S has an internal timer and UART serial interface conversion function. Therefore, the microcontroller IC1 does not need to generate the strict timing waveform required for 1-Wire communication. Instead, it automatically converts each character into 8 1-Wire timing signals, which greatly improves the data throughput and access speed and simplifies the programming of the 1-Wire memory chip.

[0019] The working principle of the plasma surgical electrode information reading circuit of this utility model is as follows: Data is read and written through the TXD and RXD terminals of the microcontroller IC1 and the 1-Wire memory IC3. After bidirectional electrical isolation by the opto-isolation circuit, the data is sent to the 1-Wire bus master controller IC2. The serial port data output by the dual wires is converted into single-wire bus (1-Wire) data SDA. The SDA data line is electrically connected to the 1-Wire memory IC3 in the plasma surgical electrode. When the plasma surgical electrode is connected to the socket of the medical host through the plug, the function of reading and writing to the 1-Wire memory in the plug can be realized.

[0020] Press the power switch on the medical host to turn on the power. After completing the initialization self-test, the medical host enters the 1-wire access scanning state, waiting for the plasma surgical electrode to be connected. After removing the plasma surgical electrode from its sterile packaging, plug it into the socket of the matching medical host. The medical host detects the connection of the plasma surgical electrode and reads the registration number of the 1-Wire memory and the saved user EEPROM information.

[0021] The workflow of the aforementioned plasma surgical equipment:

[0022] (1) Read the time stamp of the plasma surgical electrode product

[0023] It can determine whether the product is being used for the first time by the medical host. If it is the first time, the current system time of the medical host is written into a specific time storage unit and saved as a time stamp, indicating that the product has been officially activated. The time stamp is compared with the system time of the medical host. If it exceeds 24 hours, it means that the plasma surgical electrode has been activated and used for a longer period of time and can no longer guarantee a sterile state. The display screen of the medical host will show a user prompt that the product has expired, and the medical host will disable all operation functions of the plasma surgical electrode.

[0024] (2) Reading user information of plasma surgical electrode products

[0025] With a single read command, the medical host can read the 8-bit family code and 48-bit unique serial number of the DS2433 chip. By recognizing the serial number through the system software, it can determine whether the product is manufactured by our company. Considering the performance differences and safety issues between different brands and products, if it is determined to be a product not manufactured by our company, the display screen of the medical host will display a product incompatibility message and prohibit the activation of all operating functions of the plasma surgical electrode.

[0026] (3) Read the power and frequency configuration parameters of the plasma surgical electrode product.

[0027] Plasma surgical electrodes come in numerous product models depending on the application and surgical scenario. Each product is configured with an optimal set of power parameters. For different product models, the default power and frequency settings that match the specific model are stored in the 1-Wire memory at the factory. When the medical host reads the power parameters of the plasma surgical electrode, it can display these parameters on the standby screen of the medical host as the default settings for the user, saving the user time in adjusting and setting the power parameters.

[0028] (4) After-sales management of plasma surgical electrode products

[0029] Every qualified plasma surgical electrode product has its relevant information written into its serial number at the time of manufacture (including product specifications and model, production batch, manufacturing date, etc.). In after-sales practice, products returned for fault analysis often have lost or damaged packaging, making it impossible to trace the product information. The serial number reading function of the plasma surgical electrode information reading circuit of this utility model can greatly facilitate the after-sales management of plasma surgical electrode products.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plasma surgical electrode information reading circuit, characterized in that: It is installed in a plasma surgical device consisting of plasma surgical electrodes and a medical host. It includes a 1-Wire memory IC3 installed in the plug of the plasma surgical electrodes, a microcontroller IC1, a 1-Wire bus master controller IC2, and an opto-isolation circuit installed in the medical host. The opto-isolation circuit includes optocouplers V1 and V2. The positive input terminal of optocoupler V1 is connected to a 5V power supply via resistor R3, and the positive output terminal of optocoupler V2 is connected to a 5V power supply via resistor R4. The positive output terminal of optocoupler V1 is connected to a VCC power supply via resistor R1, and the positive input terminal of optocoupler V2 is connected to a VCC power supply via resistor R2. The negative output terminal of optocoupler V1... The negative output terminals of optocoupler V2 are all grounded; the TXD terminal of microcontroller IC1 is connected to the negative input terminal of optocoupler V2, and the RXD terminal is connected to the positive output terminal of optocoupler V1. The positive output terminal of optocoupler V2 and the negative input terminal of optocoupler V1 are respectively connected to the TXD terminal and RXD terminal of 1-Wire bus master controller IC2. The VPP terminal of 1-Wire bus master controller IC2 is connected to the power supply terminal VDD and then connected to a 5V power supply. It is also grounded through parallel capacitors C1 and C2. The GND terminal is grounded. The 1-Wire terminal is connected to a 5V power supply through resistor R5 and is connected to the IO terminal of 1-Wire memory IC3.

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