Master-slave power supply system for medical equipment

Abstract

The invention provides a medical equipment master-slave power supply system, which comprises master equipment and at least one slave equipment, and is characterized in that the master equipment comprises a first shell, and a first direct current power supply module and a first functional component which are arranged in the first shell; the slave device comprises a second shell and a second functional part arranged in the second shell, when the master device and the slave device supply power through the direct current bus, the functional parts in the master device and the slave device are subjected to power supply isolation processing through the power supply isolation device, contact leakage current between the functional parts is reduced, and therefore the corresponding safety requirements are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and particularly relates to a master-slave power supply system for medical equipment. Background Art

[0002] A master-slave power supply system for medical equipment, such as a medical robot, usually consists of a master device and a slave device. Each device has a separate housing, and a common DC bus is shared between each device. The master device supplies power to the slave device through a cable, and the touch leakage current of each device needs to meet the safety regulations requirements.

[0003] However, in some application scenarios, there are several special application requirements. For example, in the operating room application scenario, the distance between the master device and the slave device is far, the working current or charging current of the slave device is large, and the internal functional components of the master device and the slave device, the installation housing are electrically connected to the negative power supply, resulting in the system being grounded passively. Due to the above application characteristics, the ground imbalance between the master device and the slave device is caused, resulting in a leakage current on the housing, which leads to non-compliance with relevant safety regulations requirements, such as non-compliance with the safety regulations requirements for the leakage current of the medical equipment housing. Summary of the Invention

[0004] The purpose of the present invention is to provide a master-slave power supply system for medical equipment, aiming to reduce the problem of leakage current on the housing existing between traditional master-slave power supply systems for medical equipment.

[0005] The first aspect of the embodiment of the present invention provides a master-slave power supply system for medical equipment, including a master device and at least one slave device;

[0006] The master device includes a first housing, a first DC power supply module and first functional components arranged in the first housing. The first housing is grounded. The slave device includes a second housing and second functional components arranged in the second housing. The first housing is electrically connected to the second housing;

[0007] A power isolation component is further provided in the master device and / or the slave device;

[0008] The power isolation component is connected to the first functional components and / or the second functional components. The power isolation component is configured to supply power to the first functional components and / or the second functional components and isolate the power supply from the first DC power supply module;

[0009] The first functional components and the second functional components are configured to complete corresponding electrical functions after being powered on.

[0010] Optionally, the second functional components are connected to the first DC power supply module through a DC bus, and the second functional components are further connected to the second housing through a connection wire;

[0011] The power isolation component includes a second DC power module. The first functional component is connected to the second DC power module, and the first functional component is also connected to the first housing through a connection line.

[0012] Optionally, the master device further includes:

[0013] A first switching switch, which is respectively connected to the first DC power module, the second DC power module, and the first functional component. The first switching switch is configured to be triggered by a first switch switching signal to connect the first functional component and the first DC power module, or to trigger the connection between the first functional component and the second DC power module.

[0014] Optionally, the first functional component is connected to the first DC power module through a DC bus, and the first functional component is also connected to the first housing through a connection line;

[0015] The second functional component is connected to the second housing through a connection line;

[0016] The power isolation component includes a DC isolation circuit. The input end of the DC isolation circuit is connected to the first DC power module through a DC bus, and the output end of the DC isolation circuit is connected to the second functional component. The DC isolation circuit is configured to perform power isolation on the power supply of the second functional component.

[0017] Optionally, the DC isolation circuit includes a common-mode inductor, an input filter circuit, an inverter circuit, an isolation transformer, and a rectifier filter circuit connected in sequence;

[0018] The input end of the common-mode inductor is connected to the first DC power module through a DC bus, and the output end of the rectifier filter circuit is connected to the second functional component.

[0019] Optionally, the slave device further includes:

[0020] A second switching switch, which is connected in parallel with the DC isolation circuit between the DC bus and the second functional component. The second switching switch is configured to be triggered by a second switch switching signal to be turned on or off, so as to short-circuit the DC isolation circuit, or to switch the connection of the DC isolation circuit between the DC bus and the second functional component.

[0021] Optionally, the second functional component is also connected to the second housing through a connection line. The first functional component is connected to the first DC power module and the first functional component is not connected to the first housing.

[0022] Optionally, the master device further includes:

[0023] A third switching switch, which is connected in series between the first functional component and the first housing, and is configured to be turned on and off by a third switching switch switching signal to switch the connection state between the first functional component and the first housing.

[0024] Optionally, the first functional component is further connected to the first housing through a connection line, the second functional component is connected to the first DC power module and the second functional component is not connected to the second housing.

[0025] Optionally, the slave device further includes:

[0026] A fourth switching switch, which is connected in series between the second functional component and the second housing, and is configured to be turned on and off by a fourth switching switch switching signal to switch the connection state between the second functional component and the second housing.

[0027] The beneficial effects of the embodiment of the present invention compared with the prior art are as follows: The above-mentioned master-slave power supply system for medical devices includes a master device and at least one slave device. The master device includes a first housing, a first DC power module and a first functional component disposed in the first housing. The slave device includes a second housing and a second functional component disposed in the second housing. When the master and slave devices are powered by a DC bus, the functional components in the master and slave devices are subjected to power isolation processing through a power isolation device, reducing the contact leakage current between the functional components, thereby meeting the corresponding safety regulations requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of a traditional master-slave power supply system for medical devices;

[0030] Figure 2 It is a first schematic structural diagram of the master-slave power supply system for medical devices provided by the embodiment of the present invention;

[0031] Figure 3 It is a second schematic structural diagram of the master-slave power supply system for medical devices provided by the embodiment of the present invention;

[0032] Figure 4 It is a third schematic structural diagram of the master-slave power supply system for medical devices provided by the embodiment of the present invention;

[0033] Figure 5 The fourth structural schematic diagram of the master-slave power supply system for medical devices provided by the embodiments of the present invention;

[0034] Figure 6 The structural schematic diagram of the DC isolation circuit provided by the embodiments of the present invention;

[0035] Figure 7 The fifth structural schematic diagram of the master-slave power supply system for medical devices provided by the embodiments of the present invention;

[0036] Figure 8 The sixth structural schematic diagram of the master-slave power supply system for medical devices provided by the embodiments of the present invention;

[0037] Figure 9 The seventh structural schematic diagram of the master-slave power supply system for medical devices provided by the embodiments of the present invention;

[0038] Figure 10 The eighth structural schematic diagram of the master-slave power supply system for medical devices provided by the embodiments of the present invention. Detailed implementation manners

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0042] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0043] As Figure 1 shown, Figure 1 is a master-slave power supply system for a medical device with a conventional structure. The master device 10 includes a first housing 11, a first DC power module DC1 disposed within the first housing 11, and a first functional component 12. The slave device 20 includes a second housing 21 and a second functional component 22 disposed within the second housing 21. The first housing 11 and the second housing 21 are separated from each other and are electrically connected to ground through a connecting wire. The master device 10 obtains commercial power from the power grid and converts it into DC power through the first DC power module DC1. The second functional components 22 in a plurality of slave devices 20 are powered by the first DC power module DC1 of the master device 10. The slave devices 20 share the DC bus of the master device 10, and the length of the connecting wire can be selected and set according to the application scenario.

[0044] Among them, the functional components, the mounting housing, and the negative electrode of the first DC power module DC1 in the master device 10 and the slave device 20 are electrically connected and conducted, indirectly causing the DC bus to be grounded at the master and slave device ends respectively.

[0045] Among them, I L is the load current, I GND is the DC bus return current, I PE is the protective grounding wire return current, I CON is the touch leakage current. The corresponding current relationship is I L = I GND + I PE + I CON , where the load current is determined by the characteristics of the slave device 20 and is usually fixed.

[0046] In some application scenarios, there are several special application requirements. For example, in the operating room application scenario, the distance between the master device 10 and the slave device 20 is far, the working current or charging current of the slave device 20 is large, and the internal functional components, the mounting housing, and the power negative electrode of the master device 10 and the slave device 20 are electrically connected and conducted, resulting in the system being passively grounded. Due to the above application characteristics, the ground imbalance between the master device 10 and the slave device 20 is caused, thereby generating a housing leakage current, resulting in non-compliance with relevant safety regulations.

[0047] In order to reduce the touch leakage current between the master and slave devices, a first aspect of the embodiments of the present invention provides a master-slave power supply system for medical devices.

[0048] As Figure 2 and Figure 3 shown, the master-slave power supply system of the medical device includes a master device 10 and at least one slave device 20;

[0049] The master device 10 includes a first housing 11, a first DC power supply module DC1 and a first functional component 12 disposed within the first housing 11. The first housing 11 is grounded. The slave device 20 includes a second housing 21 and a second functional component 22 disposed within the second housing 21. The first housing 11 is connected to the second housing 21 through a connecting wire;

[0050] A power isolation component is further provided within the master device 10 and / or the slave device 20;

[0051] The power isolation component is connected to the first functional component 12 and / or the second functional component 22, and is configured to supply power to the first functional component 12 and / or the second functional component 22 and isolate the power from the first DC power supply module DC1;

[0052] The first functional component 12 and the second functional component 22 are configured to complete corresponding electrical functions after being powered on.

[0053] In this embodiment, the first functional component 12 can be used to complete tasks such as power conversion, status monitoring of the slave device 20, debugging, etc. The second functional component 22 can be used to execute and output required actions, signals, etc. for corresponding application scenarios, such as completing surgical cutting, anastomosis, etc., or emitting laser pulses, etc. The specific electrical functions completed are not limited.

[0054] The first functional component 12 and the second functional component 22 include a mounting housing and a power supply terminal. The power supply terminal is connected to the corresponding DC power supply module through a DC bus and obtains a power supply.

[0055] At the same time, by setting the power isolation component, the contact leakage current between the master and slave devices is reduced. The first functional component 12 or the second functional component 22 is connected to the power isolation component and powered by the power isolation component, so that there is no direct current loop between it and the first DC power supply module DC1, thereby reducing the contact leakage current.

[0056] Among them, the power isolation component can be a power supply module or a structure such as an isolation transformer 233. As Figure 2 shown, in an alternative embodiment, the second functional component 22 is connected to the first DC power supply module DC1 through a DC bus, and the second functional component 22 is also connected to the second housing 21 through a connecting wire;

[0057] The power isolation component includes a second DC power supply module DC2. The first functional component 12 is connected to the second DC power supply module DC2, and the first functional component 12 is also connected to the first housing 11 through a connecting wire.

[0058] In this embodiment, the second DC power supply module DC2 is separately arranged from the first DC power supply module DC1, and there is no connection loop between them. The first DC power supply module DC1 only supplies power to the second functional components 22 of each slave device 20, and the second DC power supply module DC2 supplies power to the first functional component 12, cutting off the current in the return path formed by the connection line of the master device 10, thereby reducing the contact leakage current between the first functional component 12 and the second functional component 22 and realizing power isolation.

[0059] Correspondingly, in order to meet different safety requirements in different application scenarios and improve compatibility, it is possible to selectively perform power isolation on the first functional component 12. In an alternative embodiment, as Figure 4 shown, the master device 10 further includes:

[0060] A first switching switch 13, which is respectively connected to the first DC power supply module DC1, the second DC power supply module DC2, and the first functional component 12. The first switching switch 13 is configured to be triggered by a first switch switching signal to connect the first functional component 12 and the first DC power supply module DC1, or to trigger the connection between the first functional component 12 and the second DC power supply module DC2.

[0061] In this embodiment, the first switching switch 13 has two switching states. In the first switching state, the first DC power supply module DC1 is connected to the first functional component 12 through the first switching switch 13, and the second DC power supply module DC2 is disconnected from the first functional component 12. At this time, the protection against contact leakage current may not be carried out.

[0062] And in the second switching state, the second DC power supply module DC2 is connected to the first functional component 12 through the first switching switch 13, and the first DC power supply module DC1 is disconnected from the first functional component 12. At this time, the first DC power supply module DC1 and the second DC power supply module DC2 are separately arranged to achieve power isolation and reduce the contact leakage current between the first functional component 12 and the second functional component 22.

[0063] Among them, the first switching switch 13 can adopt multiple switching switches as in Figure 4 or can also adopt structures such as a switch chip, and the specific structure is not limited.

[0064] In another alternative embodiment, as Figure 3 shown, the first functional component 12 is connected to the first DC power supply module DC1 through a DC bus, and the first functional component 12 is also connected to the first housing 11 through a connection line;

[0065] The second functional component 22 is connected to the second housing 21 through a connection line;

[0066] The power isolation component includes a DC isolation circuit 23. The input end of the DC isolation circuit 23 is connected to the first DC power module DC1 through a DC bus, and the output end of the DC isolation circuit 23 is connected to the second functional component 22. The DC isolation circuit 23 is configured to perform power isolation on the power supply of the second functional component 22.

[0067] In this embodiment, the DC isolation circuit 23 is connected between the first DC power module DC1 and the power supply end of the second functional component 22. The first DC power module DC1 and the input end of the DC isolation circuit 23 form a current loop, and the output end of the DC isolation circuit 23 and the power supply end of the second functional component 22 form another current loop. The two current loops affect each other complementarily, thereby cutting off the loop path current at the device 20 end of the connection line, reducing the contact leakage current, blocking the return path between the main device 10 and the slave device 20, and thus reducing the contact leakage current between the first functional component 12 and the second functional component 22 to achieve power isolation.

[0068] Correspondingly, in order to meet different safety regulations requirements in different application scenarios and improve compatibility, it is optional whether to perform power isolation on the first functional component 12. In an alternative embodiment, as Figure 5 shown, the slave device 20 further includes:

[0069] A second switching switch 24, which is connected in parallel with the DC isolation circuit 23 between the DC bus and the second functional component 22. The second switching switch 24 is configured to be turned on and off triggered by a second switch switching signal to short-circuit the DC isolation circuit 23 or switch the DC isolation circuit 23 to be connected between the DC bus and the second functional component 22.

[0070] In this embodiment, the second switching switch 24 has two switch states. When the second switching switch 24 is turned on, the second switching switch 24 short-circuits the DC isolation circuit 23, and the first DC power module DC1 is connected to the first functional component 12 through the second switching switch 24. At this time, protection against contact leakage current may not be required.

[0071] And in the second switch state, the second switching switch 24 is turned off, and the DC isolation circuit 23 is switched to be connected between the first DC power module DC1 and the second functional component 22. At this time, the first DC power module DC1 and the input end of the DC isolation circuit 23 form a current loop, and the output end of the DC isolation circuit 23 and the power supply end of the second functional component 22 form another current loop. The two current loops affect each other complementarily, thereby cutting off the loop path current at the device 20 end of the connection line, reducing the contact leakage current, blocking the return path between the main device 10 and the slave device 20, and thus reducing the contact leakage current between the first functional component 12 and the second functional component 22 to achieve power isolation.

[0072] Among them, the second switching switch 24 can adopt multiple switching switches such as Figure 5 or can also adopt structures such as switch chips, and the specific structure is not limited.

[0073] The DC isolation circuit 23 can adopt an isolation transformer 233, an isolation DC / DC circuit, etc. In an optional embodiment, as Figure 6 shown, the DC isolation circuit 23 includes a common mode inductor L1, an input filter circuit 231, an inverter circuit 232, an isolation transformer 233, and a rectifier filter circuit 234 that are connected in sequence;

[0074] The input end of the common mode inductor L1 is connected to the first DC power supply module DC1 through a DC bus, and the output end of the rectifier filter circuit 234 is connected to the second functional component 22.

[0075] In this embodiment, the input and output power supplies of the slave device 20 are isolated through the isolation transformer 233. At the same time, the housing of the DC isolation circuit 23 is grounded through the second housing 21 of the slave device 20, effectively ensuring the EMI filtering effect at the input end. In order to further effectively reduce the contact leakage current, the Y1 and Y2 capacitors can also be cancelled according to the actual EMI test effect, or capacitors with smaller leakage current can be selected.

[0076] Furthermore, in an optional embodiment, in order to reduce the voltage drop caused by cable loss and evenly distribute the current to the connecting wires, the wire diameters of the DC bus and the connecting wires can be reasonably increased, thereby reducing the impedance of the interconnecting cables and achieving the purpose of reducing the contact leakage current.

[0077] Furthermore, as Figure 7 and Figure 8 shown, in an optional embodiment, the first functional component 12 of the master device 10 and / or the second functional component 22 of the slave device 20 can also be floating grounded. The negative terminal of the first functional component 12 is disconnected from the first housing 11 for floating grounding, and / or the negative terminal of the second functional component 22 is disconnected from the second housing 21 for floating grounding, preventing the system from being passively grounded, thereby avoiding the ground imbalance between the master device 10 and the slave device 20 and reducing the generation of leakage current, so as to meet the relevant safety regulations requirements.

[0078] Among them, one of the functional components can be selected for floating grounding, or both functional components can be floating grounded simultaneously to further reduce the contact leakage current between the functional components.

[0079] In an optional embodiment, as Figure 7 shown, the second functional component 22 is also connected to the second housing 21 through a connecting wire, the first functional component 12 is connected to the first DC power supply module DC1 and the first functional component 12 is not connected to the first housing 11.

[0080] In this embodiment, the negative terminal of the first functional component 12 of the master device 10 is selected to be kept disconnected from the first housing 11, and the mounting housing of the second functional component 22 is connected to the second housing 21, so as to prevent the first functional component 12 from being passively grounded, keep the ground between the master device 10 and the slave device 20 balanced, reduce the generation of leakage current, and thus meet the relevant safety regulations requirements. At this time, the second functional component 22 can be directly connected to the first DC power module DC1 through the DC bus, and the second functional component 22 can also be connected to the first DC power module DC1 through the DC isolation circuit 23 and the DC bus.

[0081] Furthermore, in order to meet different safety regulations requirements in different application scenarios and improve compatibility, it is possible to selectively perform floating ground processing on the first functional component 12, such as Figure 9 shown, in an alternative embodiment, the master device 10 further includes:

[0082] A third switching switch K1, which is connected in series between the first functional component 12 and the first housing 11. The third switching switch K1 is configured to be turned on and off triggered by a switching signal of the third switching switch K1 to switch the connection state between the first functional component 12 and the first housing 11.

[0083] In this embodiment, a control button may be provided on the first housing 11 of the master device 10. The control button is electrically connected to the third switching switch K1. The on-off state of the third switching switch K1 can be controlled through the control button, and then the connection state between the first functional component 12 and the first housing 11 can be controlled, so that the negative terminal of the first functional component 12 is connected to the first housing 11 or floating ground processing is performed. The third switching switch K1 can adopt a switch device with controlled on-off, such as a triode, a relay, etc.

[0084] Alternatively, the third switching switch K1 is a remote control switch, and the master-slave power supply system of the medical device is also equipped with a remote control. The on-off state of the third switching switch K1 is remotely controlled through the remote control, and then the connection state between the first functional component 12 and the first housing 11 is controlled, so that the negative terminal of the first functional component 12 is connected to the first housing 11 or floating ground processing is performed. The type and control method of the third switching switch K1 are not limited.

[0085] In another alternative embodiment, as Figure 8 shown, the first functional component 12 is also connected to the first housing 11 through a connecting wire, the second functional component 22 is connected to the first DC power module DC1 and the second functional component 22 is not connected to the second housing 21.

[0086] In this embodiment, it is selected to keep the installation housing of the second functional component 22 of the slave device 20 disconnected from the second housing 21, and the negative terminal of the first functional component 12 is connected to the second housing 21, so as to prevent the second functional component 22 from being passively grounded, keep the ground between the master device 10 and the slave device 20 balanced, reduce the generation of leakage current, and thus meet the relevant safety regulations. At this time, the first functional component 12 can be connected to the first DC power module DC1, or the first functional component 12 is connected to the second DC power module DC2.

[0087] Furthermore, in order to meet the different safety regulations requirements in different application scenarios and improve compatibility, it is optional whether to perform floating ground treatment on the second functional component 22. Optionally, as Figure 10 shown, the slave device 20 further includes:

[0088] A fourth switching switch K2, which is connected in series between the second functional component 22 and the second housing 21. The fourth switching switch K2 is configured to be turned on and off triggered by a fourth switching switch K2 switching signal to switch the connection state between the second functional component 22 and the second housing 21.

[0089] In this embodiment, a control button can be provided on the second housing 21 of the slave device 20. The control button is electrically connected to the fourth switching switch K2. The on-off state of the fourth switching switch K2 can be controlled through the control button, and further the connection state between the installation housing of the second functional component 22 and the second housing 21 can be controlled, so that the installation housing of the second functional component 22 is connected to the second housing 21 or floating ground treatment is performed. The third switching switch K1 can adopt a switch device with controlled on-off, such as a triode, a relay, etc.

[0090] Alternatively, the fourth switching switch K2 is a remote control switch, and the master-slave power supply system for medical devices is also equipped with a remote control. The on-off state of the fourth switching switch K2 is remotely controlled through the remote control, and further the connection state between the second functional component 22 and the second housing 21 is controlled, so that the installation housing of the second functional component 22 is connected to the second housing 21 or floating ground treatment is performed. The type and control method of the fourth switching switch K2 are not limited.

[0091] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A master-slave power supply system for a medical device, characterized in that, it includes a master device (10) and at least one slave device (20); the master device (10) includes a first housing (11), a first DC power module (DC1) and a first functional component (12) disposed within the first housing (11), the first housing (11) is grounded, the slave device (20) includes a second housing (21) and a second functional component (22) disposed within the second housing (21), and the first housing (11) is electrically connected to the second housing (21); a power isolation component is further provided within the master device (10) and / or the slave device (20); the power isolation component is connected to the first functional component (12) and / or the second functional component (22), and the power isolation component is configured to supply power to the first functional component (12) and / or the second functional component (22) and isolate the power from the first DC power module (DC1); the first functional component (12) and the second functional component (22) are configured to complete corresponding electrical functions after being powered on.

2. The master-slave power supply system for a medical device according to claim 1, characterized in that, the second functional component (22) is connected to the first DC power module (DC1) through a DC bus, and the second functional component (22) is further connected to the second housing (21) through a connection line; the power isolation component includes a second DC power module (DC2), the first functional component (12) is connected to the second DC power module (DC2), and the first functional component (12) is further connected to the first housing (11) through a connection line.

3. The master-slave power supply system for a medical device according to claim 2, characterized in that, the master device (10) further includes: a first switching switch (13), which is respectively connected to the first DC power module (DC1), the second DC power module (DC2) and the first functional component (12), and the first switching switch (13) is configured to be triggered by a first switch switching signal to connect the first functional component (12) and the first DC power module (DC1), or to trigger the connection between the first functional component (12) and the second DC power module (DC2).

4. The master-slave power supply system for a medical device according to claim 1, characterized in that, the first functional component (12) is connected to the first DC power module (DC1) through a DC bus, and the first functional component (12) is further connected to the first housing (11) through a connection line; the second functional component (22) is connected to the second housing (21) through a connection line; The power isolation component includes a DC isolation circuit (23). The input end of the DC isolation circuit (23) is connected to the first DC power module (DC1) through a DC bus. The output end of the DC isolation circuit (23) is connected to the second functional component (22). The DC isolation circuit (23) is configured to isolate the power supply for the second functional component (22).

5. The master-slave power supply system for a medical device according to claim 4, wherein, the DC isolation circuit (23) includes a common-mode inductor (L1), an input filter circuit (231), an inverter circuit (232), an isolation transformer (233), and a rectifier filter circuit (234) connected in sequence; the input end of the common-mode inductor (L1) is connected to the first DC power module (DC1) through a DC bus, and the output end of the rectifier filter circuit (234) is connected to the second functional component (22).

6. The master-slave power supply system for a medical device according to claim 4, wherein, the slave device (20) further includes: a second switching switch (24). The second switching switch (24) is connected in parallel with the DC isolation circuit (23) between the DC bus and the second functional component (22). The second switching switch (24) is configured to be turned on and off when triggered by a second switching signal to short-circuit the DC isolation circuit (23), or to switch the connection of the DC isolation circuit (23) between the DC bus and the second functional component (22).

7. The master-slave power supply system for a medical device according to claim 1, wherein, the second functional component (22) is further connected to the second housing (21) through a connecting wire. The first functional component (12) is connected to the first DC power module (DC1) and the first functional component (12) is not connected to the first housing (11).

8. The master-slave power supply system for a medical device according to claim 7, wherein, the master device (10) further includes: a third switching switch (K1). The third switching switch (K1) is connected in series between the first functional component (12) and the first housing (11). The third switching switch (K1) is configured to be turned on and off when triggered by a third switching signal to switch the connection state between the first functional component (12) and the first housing (11).

9. The master-slave power supply system for a medical device according to claim 1, wherein, the first functional component (12) is further connected to the first housing (11) through a connecting wire. The second functional component (22) is connected to the first DC power module (DC1) and the second functional component (22) is not connected to the second housing (21).

10. The master-slave power supply system for a medical device according to claim 9, wherein, the slave device (20) further includes: Fourth switching switch (K2), the fourth switching switch (K2) is connected in series between the second functional component (22) and the second housing (21), and the fourth switching switch (K2) is configured to be triggered to turn on and off by a fourth switching switch (K2) switching signal to switch the connection state between the second functional component (22) and the second housing (21).

Images