Isolating circuit of high-frequency surgical equipment
By using commercially available isolation power supplies, relays, optocouplers, and isolation chips, and employing a dual isolation method, the problems of high difficulty, poor stability, and high cost in developing isolation circuits for high-frequency surgical equipment are solved, resulting in faster response speeds and higher stability.
Patent Information
- Application Number
- CN202422903032.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The isolation circuits of traditional high-frequency surgical equipment are difficult to develop, have poor stability, high cost, and slow optocoupler response speed.
It adopts commercially available isolation power supplies, relays, optocouplers and isolation chips to achieve isolation of high-frequency surgical equipment through dual isolation. It uses a DC24V to DC12V isolation power supply, optocouplers to transmit low-speed signals, and isolation chips to transmit high-speed signals, and controls the output relays through isolation components.
This reduces development difficulty, improves product stability and lowers costs, while also increasing the response speed of the optocoupler.
Smart Images
Figure CN223528058U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to an isolation circuit of high-frequency surgical equipment. BACKGROUND
[0002] High-frequency surgical systems are widely used in the field of clinical medicine due to their advantages over traditional surgical instruments, and among them, because the high-frequency equipment has a very high output voltage, how to realize effective isolation of the high-frequency patient assembly and the power supply and the intermediate circuit is an extremely important safety technical parameter.
[0003] To achieve this requirement, the traditional high-frequency equipment usually adopts customized isolation power supply, relay and optocoupler, which usually has defects such as great development difficulty, poor stability, high cost and slow response speed of the optocoupler.
[0004] To improve the stability and response speed of the product, the application discloses a method for meeting the isolation strength of high-frequency surgical equipment by using double isolation, which uses mature isolation power supply, relay, optocoupler and isolation chip on the market to solve the above-mentioned problems such as great development difficulty, poor stability, high cost and slow response speed of the optocoupler. SUMMARY
[0005] The utility model wants to solve the technical problem is: overcome the above-mentioned technical's shortcoming, propose a kind of using mature isolation power supply, relay, optocoupler and isolation chip on the market, solve the high-frequency surgical equipment isolation assembly for the problems such as great development difficulty, poor stability, high cost and slow response speed of the optocoupler.
[0006] To solve the above-mentioned technical problem, the technical scheme provided by the utility model is: an isolation circuit of high-frequency surgical equipment, characterized by comprising: an isolation assembly and a patient assembly; the isolation assembly comprises an isolation power supply, an optocoupler and an isolation chip; the patient assembly comprises an output relay; the input of the isolation power supply is taken from the intermediate circuit of an external device, and the optocoupler, the isolation chip and the output relay are powered; the optocoupler and the isolation chip are used for signal transmission between the intermediate circuit and the patient assembly, and the intermediate circuit controls the coil of the output relay through the isolation assembly; the contact end of the output relay is connected in series between the intermediate circuit and the output port.
[0007] The above-mentioned scheme is further improved in that: the isolation power supply is a DC24V-to-DC12V isolation power supply, and both the input end and the output end of the isolation power supply have filter capacitors.
[0008] The above-mentioned scheme is further improved in that: the optocoupler is used for transmitting low-speed signals, and the isolation chip is used for transmitting high-speed signals; the input of the optocoupler and the isolation chip is connected to the intermediate circuit, and the output of the optocoupler and the isolation chip is connected to a driving chip for output.
[0009] The further improvement of the above scheme is that the combination of internal devices in the patient assembly can be changed through a relay; the relay is also controlled by the intermediate circuit through an isolation assembly.
[0010] The isolation circuit of the high-frequency surgical equipment provided by the utility model meets the isolation intensity of the high-frequency surgical equipment by using double isolation mode, compared with traditional high-frequency equipment development, can solve the problems of great development difficulty, poor stability, high cost and slow response speed of optocoupler and the like.Further, the development cost can be reduced and the stability of the product can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0011] The utility model will be further described in connection with the drawings.
[0012] Figure 1 It is the structural schematic diagram of one preferred embodiment of the utility model.
[0013] Figure 2 It is the circuit diagram of the isolation power supply of one preferred embodiment of the utility model.
[0014] Figure 3 It is the circuit diagram of the optocoupler and isolation chip of one preferred embodiment of the utility model.
[0015] Figure 4 It is the circuit diagram of the patient assembly of one preferred embodiment of the utility model. DETAILED DESCRIPTION
[0016] The isolation circuit of the high-frequency surgical equipment of the embodiment, as shown in the figure, comprises an isolation assembly and a patient assembly; the isolation assembly comprises an isolation power supply, an optocoupler and an isolation chip; the patient assembly comprises an output relay; the input of the isolation power supply is taken from the intermediate circuit of the external equipment, and the optocoupler, the isolation chip and the output relay are powered; the optocoupler and the isolation chip are used for signal transmission between the intermediate circuit and the patient assembly, and the intermediate circuit controls the coil of the output relay through the isolation assembly; the contact end of the output relay is connected in series between the intermediate circuit and the output port. Figure 1 The isolation power supply is as shown in the figure.
[0017] Figure 2As shown, the circuit is composed of isolation power chip U3, filter capacitor C1, C2. According to the example shown, a 24V to 12V isolation power supply is provided, with an isolation of 6KV. The power output pins 2, 3 of U3 are connected to the 24V power input, which is derived from the intermediate circuit, and the power output pins 4, 5 of U3 are connected to the 12V output, which powers the first stage of the isolation circuit. C2 is connected to pin 3 of U3 at one end and to pin 2 of U3 at the other end, and functions to filter out power noise from the 24V input. C1 is connected to pin 4 of U3 at one end and to pin 5 of U3 at the other end, and functions to filter out power noise from the 12V output. Commonly available isolation power supplies can achieve an isolation strength of 5KV.
[0018] As shown, Figure 3 the optical coupling and isolation chip circuit is composed of isolation chip U1, drive chip U2, isolation optical coupling OPT1, resistors R1, R2, R3. Its function is to serve as an intermediate to transmit signals between the intermediate circuit and the patient circuit. The input pins 3, 4, 5, 6 of the isolation chip U1 are connected to the intermediate circuit control signal, and the output pins 11, 12, 13, 14 are connected to the input pins 1, 2, 3, 4 of the drive chip U2. The output pins 15, 16, 17, 18 of the drive chip U2 correspond to the output pins 1, 2, 3, 4 respectively and output. The output pin 18 of the drive chip U2 is connected to the 5 pin of the output relay K1. R2 and R3 are input and output current limiting resistors of the isolation optical coupling OPT1. R1 is the pull-up resistor of the 2 pin of the isolation optical coupling OPT1. The 2 pin of the isolation optical coupling OPT1 is connected to the intermediate circuit control signal, and the 4 pin of the isolation optical coupling OPT1 is connected to the input pin 8 of the drive chip U2, which corresponds to the output pin 11 of the drive chip U2. The output pin 11 of the drive chip U2 is connected to the 5 pin of the relay K5, which can control the combination mode of the internal devices of the patient assembly. Commonly available isolation chips and optical couplings can achieve an isolation strength of 5KV. The optical coupling is used to transmit low-speed signals, and the isolation chip is used to transmit high-speed signals.
[0019] As shown, Figure 4 the circuit of the patient assembly is composed of output relay K1, relay K5, and output terminal CN1. The function of the patient assembly is to output the output energy of the intermediate circuit to the subsequent equipment through the output terminal CN1, and to act on the patient for treatment. The output energy can be controlled by the on-off of the output relay K1. Commonly available relays can achieve an isolation strength of 5KV.
[0020] The utility model is not limited to the above-mentioned embodiments. Any technical solution formed by equivalent substitution falls within the scope of protection required by the present application.
Claims
1. An isolation circuit of a high-frequency surgical apparatus, characterized by comprising: The application relates to an isolation module and a patient module. The isolation module comprises an isolation power supply, an optical coupler and an isolation chip. The patient module comprises an output relay; the input of the isolation power supply is taken from the intermediate circuit of an external device to supply power to the optical coupler, the isolation chip and the output relay; the optical coupler and the isolation chip are used for signal transmission between the intermediate circuit and the patient module; the intermediate circuit controls the coil of the output relay through the isolation module; the contact end of the output relay is connected in series between the intermediate circuit and an output port. The isolation power supply is a DC24V-to-DC12V isolation power supply, and the input end and the output end of the isolation power supply are provided with filter capacitors.
2. The isolation circuit of a high-frequency surgical apparatus according to claim 1, characterized by: The optical coupler is used for transmitting low-speed signals, and the isolation chip is used for transmitting high-speed signals; the input of the optical coupler and the isolation chip is connected to the intermediate circuit, and the output of the optical coupler and the isolation chip is connected to a driving chip to realize output.
3. The isolation circuit of a high-frequency surgical apparatus according to claim 2, characterized by: The combination mode of internal devices in the patient module can be changed through a relay; the relay is also controlled by the intermediate circuit through the isolation module.
4. The isolation circuit of a high-frequency surgical apparatus according to claim 3, characterized by: