Isolating circuit of high-frequency surgical equipment
By adopting a dual isolation method in high -frequency surgery equipment, using mature isolation power, relays, optocoupler and isolation chips on the market, designing a isolation circuit for high -frequency surgical equipment to solve the problem of traditional equipment in isolation, realize the realization, realize it Higher stability and response speed.
Patent Information
- Application Number
- CN202411713734.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-01-28
AI Technical Summary
When traditional high-frequency surgical equipment realizes effective isolation between patient components and power supply and intermediate circuits, there are problems such as difficult development, poor stability, high cost and slow photocoupler response.
Using dual isolation methods, using mature isolation power, relay, optocoupler and isolation chips on the market, designing a isolation circuit for high -frequency surgical equipment, including isolation components and patient components, through isolation power, optocoupler, and isolation chip to achieve the middle realization intermediate Signal transmission between circuit and patient components.
This design reduces development costs, improves the stability and response speed of the product, and meets the isolation strength requirements of high -frequency surgical equipment.
Smart Images
Figure CN119382692A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medical devices, and in particular relates to an isolation circuit of high-frequency surgical equipment. Background Art
[0002] High-frequency surgical systems are widely used in the clinical medical field due to their advantages over traditional surgical instruments. Since high-frequency equipment has a very high output voltage, how to effectively isolate high-frequency patient components from the power supply and intermediate circuit is an extremely important safety technical parameter.
[0003] To achieve this requirement, traditional high-frequency equipment usually uses customized isolated power supplies, relays and optocoupler devices, which usually have defects such as difficult development, poor stability, high cost, and slow optocoupler response speed.
[0004] In order to improve the stability and response speed of the product, the present invention discloses a method of utilizing double isolation to meet the isolation strength of high-frequency surgical equipment. By utilizing mature isolated power supplies, relays, optocouplers, and isolation chips on the market, the above-mentioned problems such as difficulty in development, poor stability, high cost, and slow response speed of optocouplers can be solved. Summary of the invention
[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the above-mentioned technology and to propose an isolation component for high-frequency surgical equipment that utilizes mature isolated power supplies, relays, optocouplers, and isolation chips on the market to solve the problems of high development difficulty, poor stability, high cost, and slow optocoupler response speed.
[0006] In order to solve the above technical problems, the technical solution proposed in the present invention is: an isolation circuit of a high-frequency surgical device, characterized in that it includes: an isolation component and a patient component; the isolation component includes an isolation power supply, an optocoupler and an isolation chip; the patient component includes an output relay; the input of the isolation power supply is taken from the intermediate circuit of an external device to power the optocoupler, the isolation chip and the output relay; the optocoupler and the isolation chip are used for signal transmission between the intermediate circuit and the patient component, and the intermediate circuit controls the coil of the output relay through the isolation component; the contact end of the output relay is connected in series between the intermediate circuit and the output port.
[0007] A further improvement of the above scheme is that: the isolated power supply is a DC24V to DC12V isolated power supply, and both the input and output ends of the isolated power supply have filter capacitors.
[0008] A further improvement of the above scheme is that: the optocoupler is used to transmit low-speed signals, and the isolation chip is used to transmit high-speed signals; the inputs of the optocoupler and the isolation chip are connected to the intermediate circuit, and the outputs of the optocoupler and the isolation chip are connected to the driver chip for output.
[0009] A further improvement of the above scheme is that: the combination of internal components in the patient component can be changed by a relay; and the relay is also controlled by the intermediate circuit through the isolation component.
[0010] The isolation circuit of the high-frequency surgical equipment provided by the present invention utilizes a double isolation method to meet the isolation strength of the high-frequency surgical equipment. Compared with the development of traditional high-frequency equipment, it can solve the problems of high development difficulty, poor stability, high cost, slow optical coupler response speed, etc., thereby reducing the development cost and improving the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention will be further described below in conjunction with the accompanying drawings.
[0012] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention.
[0013] Figure 2 It is a circuit diagram of an electrically isolated power supply according to a preferred embodiment of the present invention.
[0014] Figure 3 It is a circuit diagram of an optocoupler and an isolation chip according to a preferred embodiment of the present invention.
[0015] Figure 4 FIG. 4 is a circuit diagram of a patient component according to a preferred embodiment of the present invention. DETAILED DESCRIPTION
[0016] The isolation circuit of the high-frequency surgical device of this embodiment is as follows: Figure 1 As shown, it includes: an isolation component and a patient component; the isolation component includes an isolation power supply, an optocoupler and an isolation chip; the patient component includes an output relay; the input of the isolation power supply is taken from the intermediate circuit of an external device to power the optocoupler, the isolation chip and the output relay; the optocoupler and the isolation chip are used for signal transmission between the intermediate circuit and the patient component, and the intermediate circuit controls the coil of the output relay through the isolation component; the contact end of the output relay is connected in series between the intermediate circuit and the output port.
[0017] Isolation power supply such as Figure 2As shown, the circuit consists of an isolated power chip U3, filter capacitors C1 and C2. According to the example shown in the figure, an isolated power supply with an isolation of 6KV is provided, which can convert 24V to 12V. The power output pins 2 and 3 of U3 are connected to the 24V power input, which comes from the intermediate circuit. The power output pins 4 and 5 of U3 are connected to the 12V output to supply power to the first-level isolation circuit. One end of C2 is connected to pin 3 of U3, and the other end is connected to pin 2 of U3. Its function is to filter out the power noise of the 24V input. One end of C1 is connected to pin 4 of U3, and the other end is connected to pin 5 of U3. Its function is to filter out the power noise of the 12V output. The common isolated power supply on the market can achieve an isolation strength of 5KV.
[0018] like Figure 3 As shown, the optocoupler and isolation chip circuit consists of an isolation chip U1, a driver chip U2, an isolation optocoupler OPT1, and resistors R1, R2, and R3. Its function is to act as an intermediate to transmit the signal between the intermediate circuit and the patient circuit. The input pins 3, 4, 5, and 6 of the isolation chip U1 are connected to the intermediate circuit control signal, the output pins 11, 12, 13, and 14 are connected to the input pins 1, 2, 3, and 4 of the driver chip U2, and the output pins 15, 16, 17, and 18 of the driver chip U2 correspond to the 1, 2, 3, and 4 pins for output. The output pin 18 of the driver chip U2 is connected to the 5th pin of the output relay K1. R2 and R3 are the input and output current limiting resistors of the isolation optocoupler OPT1, respectively. R1 is the pull-up resistor of the 2nd pin of the isolation optocoupler OPT1. The 2nd pin of the isolation optocoupler OPT1 is connected to the intermediate circuit control signal, the 4th pin of the isolation optocoupler OPT1 is connected to the input pin 8 of the driver chip U2, and the output pin 11 of the driver chip U2 corresponds to it. The output pin 11 of the driver chip U2 is connected to the pin 5 of the relay K5, which can control the combination of the internal components of the patient component. The isolation chip and optocoupler commonly used in the market can achieve an isolation strength of 5KV. The optocoupler is used to transmit low-speed signals, and the isolation chip is used to transmit high-speed signals.
[0019] like Figure 4 The circuit of the patient component consists of output relay K1, relay K5, and output terminal CN1. The function of the patient component is to output the output energy of the intermediate circuit to the subsequent equipment through the output terminal CN1, and act on the patient for treatment. The output energy can be controlled by turning the output relay K1 on and off. The general relay on the market can achieve an isolation strength of 5KV.
[0020] The present invention is not limited to the above embodiments. Any technical solution formed by equivalent replacement falls within the protection scope required by the present invention.
Claims
1. An isolation circuit for high-frequency surgical equipment, characterized in that: include: Isolation components and patient components; The isolation component includes an isolation power supply, an optical coupler and an isolation chip; The patient component includes an output relay; the input of the isolated power supply is taken from the intermediate circuit of an external device to power the optocoupler, isolation chip and output relay; the optocoupler and isolation chip are used for signal transmission between the intermediate circuit and the patient component, and the intermediate circuit controls the coil of the output relay through the isolation component; the contact end of the output relay is connected in series between the intermediate circuit and the output port.
2. The isolation circuit of high-frequency surgical equipment according to claim 1, characterized in that: The isolated power supply is a DC24V to DC12V isolated power supply, and both the input and output ends of the isolated power supply have filter capacitors.
3. The isolation circuit of high-frequency surgical equipment according to claim 2, characterized in that: The optocoupler is used to transmit low-speed signals, and the isolation chip is used to transmit high-speed signals; the inputs of the optocoupler and the isolation chip are connected to the intermediate circuit, and the outputs of the optocoupler and the isolation chip are connected to the driver chip for output.
4. The isolation circuit of high-frequency surgical equipment according to claim 3, characterized in that: The combination of internal devices in the patient component can be changed by a relay; the relay is also controlled by the intermediate circuit through the isolation component.