CN203445788U - Power supply apparatus applied to hemodialysis machine - Google Patents
Power supply apparatus applied to hemodialysis machine Download PDFInfo
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- CN203445788U CN203445788U CN201320245234.3U CN201320245234U CN203445788U CN 203445788 U CN203445788 U CN 203445788U CN 201320245234 U CN201320245234 U CN 201320245234U CN 203445788 U CN203445788 U CN 203445788U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model discloses a power supply apparatus applied to a hemodialysis machine. The power supply apparatus adopts all-digital control, realizes functions such as linear voltage stabilization, full-bridge soft switch DC/DC convertion, Buck transformation and comprehensive logic control, and at the same time, a serial communication interface is reserved for the realization of communication with a host computer. The power supply apparatus can provide work power supply with different function and quality requirements for the hemodialysis machine, and the work power supply has the advantages of small size, high precision, low ripple coefficient, high reliability, high intelligence and thorough protection functions.
Description
Technical field
The utility model relates to a kind of electric supply installation, relates in particular to a kind of electric supply installation for haemodialysis control unit.
Background technology
Medical Devices need a plurality of magnitudes of voltage to power conventionally, for the part of different rated voltages in equipment, use, and this just requires the power supply of its pairing to have multichannel output, meanwhile, needs to guarantee that in use power supply is stable.Haemodialysis control unit is a kind of conventional Medical Devices, and its each functional unit needs different power supplys to power, and it is high for quality requirements such as supply voltage precision and ripple coefficients.In prior art, the technical bottleneck existing aspect research of technique relates generally to the power supply of haemodialysis control unit.For example, the supply voltage of haemodialysis control unit needs comprises DC ± 15V, DC+24V, DC+12V ,Er road DC+5V, its required precision for DC+5V power supply is in 1% left and right, the precision of actual traditional DC+5V power supply only can reach 15% left and right, it is slightly poor for electrical stability, certainly, also there is similar techniques problem in the power supply of other functional requirements (DC ± 15V, DC+24V, DC+12V etc.), thereby causes haemodialysis control unit usually can not stablize normal operation.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of electric supply installation for haemodialysis control unit, and the working power of difference in functionality quality requirements such as can meeting required precision, ripple coefficient, reliability and intellectuality is provided.
For achieving the above object, the utility model is achieved through the following technical solutions:
For an electric supply installation for haemodialysis control unit, described device comprises:
Key control unit;
Control and status signal interface;
Ac input end;
The first signal converting unit with the output of at least one road;
With supporting first voltage stabilizing circuit at least with two-way output being connected of described each output of first signal converting unit;
The secondary signal converting unit with the output of at least one road;
With supporting the second voltage stabilizing circuit and the communication interface being connected of described each output of secondary signal converting unit;
Wherein, described ac input end is connected with first signal converting unit with key control unit respectively by relay, and key control unit is according to closure and the disconnection of the control signal control relay of control and the input of status signal interface; Described the first voltage stabilizing circuit Yi road output is connected with the input of secondary signal converting unit;
When relay is during in closure state, the output of described the first voltage stabilizing circuit and the second voltage stabilizing circuit provides power supply signal to haemodialysis control unit, and key control unit carries out data interaction by communication interface and haemodialysis control unit simultaneously;
Described first signal converting unit comprises having the Industrial Frequency Transformer of at least one road output and the first rectification circuit being connected with described Industrial Frequency Transformer output;
Described secondary signal converting unit comprises inverter circuit, the high frequency transformer with the output of at least one road being connected with described inverter circuit output, the second rectification circuit being connected with described high frequency transformer output.
Further, described the first voltage stabilizing circuit comprises the BUCK translation circuit being connected with key control unit, and a described BUCK translation circuit divides two-way output, wherein a road output signal connects normally opened relay, when line voltage fault, relay contact disconnects, and stops output.
Further, described device also comprises storage battery, battery electric quantity detecting unit, Single Switch of Soft Switching, described key control unit is connected with Single Switch of Soft Switching and battery electric quantity detecting unit respectively, meanwhile, described Single Switch of Soft Switching is connected between a BUCK translation circuit output and accumulator output end; Wherein, key control unit is for occurring when abnormal when electric network source voltage, and the conducting of control Single Switch of Soft Switching, changes the mode of operation of current device into storage battery power supply pattern; When battery electric quantity detecting unit detects powered battery voltage and drops to predetermined threshold, control Single Switch of Soft Switching cut-off, storage battery quits work, and after network source is recovered normal continuous five seconds, device is converted to mains supply.
Further, described device also comprises charging circuit, described charging circuit comprises the 2nd BUCK translation circuit, the input of described the 2nd BUCK translation circuit is connected with the output of described the first rectification circuit, output is connected with the two poles of the earth of storage battery, wherein, the power output of described the 2nd BUCK translation circuit is less than the power output of a described BUCK translation circuit.
Further, described inverter circuit comprises full bridge inverter.
Further, described device is connected with host computer by Modbus bus, according to the start and stop of remote control commands control device; Host computer can real-time displaying device operation information and setup parameter.
Further, described device is connected with heater by adding thermal relay, and described key control unit is controlled heating relay closes and disconnection according to the heater control command of controlling and status signal interface is inputted.
Further, described control and status signal interface connect indicator light and warning device.
Further, described communication interface adopts RS485 serial communication interface, based on Modbus-RTU agreement, carries out half duplex communication.
Further, described device also comprises AC circuit breaker and storage battery circuit breaker, for carrying out earth leakage protective.
The technical solution of the utility model, can provide for dialysis machine the working power of difference in functionality quality requirements, and described working power has advantages of that volume is little, precision is high, ripple coefficient is low, high reliability, high-intelligentization and defencive function perfect.
Accompanying drawing explanation
The structured flowchart of the electric supply installation for haemodialysis control unit that Fig. 1 provides for the utility model the first embodiment;
The electrical block diagram of the electric supply installation for haemodialysis control unit that Fig. 2 provides for the utility model the second embodiment;
Fig. 3 is the theory diagram of the utility model the second embodiment neutral line voltage stabilizing circuit;
Fig. 4 is the utility model schematic appearance.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate technical scheme of the present invention.Specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.
The structured flowchart of the electric supply installation for haemodialysis control unit that Fig. 1 provides for the utility model the first embodiment.As shown in Figure 1, described device comprises: key control unit 1, control and status signal interface 2, ac input end 3, there is the first signal converting unit 4 of at least one road output, with supporting first voltage stabilizing circuit 5 at least with two-way output being connected of described each output of first signal converting unit, have the secondary signal converting unit 6 exported at least one road, with supporting the second voltage stabilizing circuit 7 and the communication interface 8 being connected of described each output of secondary signal converting unit;
Wherein, described ac input end 3 is connected with first signal converting unit 5 with key control unit 1 respectively by relay, and key control unit 1 is according to closure and the disconnection of the control signal control relay of control and 2 inputs of status signal interface; Described the first voltage stabilizing circuit 5 Yi road outputs are connected with the input of secondary signal converting unit 6;
When relay is during in closure state, described the first voltage stabilizing circuit 5 and the second voltage stabilizing circuit 7 outputs provide power supply signal to haemodialysis control unit, and key control unit carries out data interaction by communication interface 8 and haemodialysis control unit simultaneously;
Described first signal converting unit comprises having the Industrial Frequency Transformer of at least one road output and the first rectification circuit being connected with described Industrial Frequency Transformer output;
Described secondary signal converting unit comprises inverter circuit, the high frequency transformer with the output of at least one road being connected with described inverter circuit output and the second rectification circuit being connected with described high frequency transformer output.
Certainly, described Industrial Frequency Transformer and the high frequency transformer with the output of at least one road can be a plurality of independently transformers, also can select same primary coil input, the form of a plurality of secondary coil outputs, selects suitable transformer proportionality coefficient can complete transformer and exports different voltage effective values.The operating frequency of Industrial Frequency Transformer generally refers to the supply frequency of 50HZ or 60HZ; The operating frequency of high frequency transformer generally all more than 1KHZ, even tens KHZ or KHZ up to a hundred.Industrial Frequency Transformer is generally used for 220V or 110V power frequency high voltage to be transformed into power frequency low pressure, for the circuit board power supply of small household appliances; High frequency transformer (as charger for mobile phone, electric ballast, Switching Power Supply, colour tv power supply, computer power, liquid crystal drive and power supply etc.) of many uses.
Technical scheme described in the utility model, can provide for Medical Devices the working power of difference in functionality quality requirements, and described working power has advantages of that volume is little, precision is high, ripple coefficient is low, high reliability, high-intelligentization and defencive function perfect.
The electrical block diagram of the electric supply installation for haemodialysis control unit that Fig. 2 provides for the utility model the second embodiment.The present embodiment be take the electric supply installation with 7 road output voltages and is described as example, adopting the high-speed microprocessor of 32 Cortex-M0 kernels is control core, adopt digital control, realize the functions such as full-bridge soft-switching DC/DC conversion and Buck conversion, alternating current input power supplying and storage battery power supply automatic switchover, charge in batteries, and be provided with communicating by letter of serial communication interface realization and miscellaneous equipment.As shown in Figure 2, in described device, key control unit 1 comprises that single-chip computer control system and input voltage detect accessory power supply, described control and status signal interface 2 are connected with single-chip computer control system, described control and status signal interface 2 are controlled button K2, indicator light L1, L2 and warning device (not shown) etc. with outside shift knob K1, heater and are connected, ac input end adopts the civil power of 220V/50Hz as input signal, wherein, L is live wire, and N is zero line.AC signal is connected with single-chip computer control system and first signal converting unit respectively by input relay, wherein, input relay is connected with input circuit breaker, there is creepage protection function, input relay contact is connected in civil power loop, coil is connected with single-chip computer control system, one end of relay contact is connected with ac input end, the other end is connected with the primary coil of Industrial Frequency Transformer in first signal converting unit, described Industrial Frequency Transformer is exported by two-way secondary coil, each road secondary coil output is through the first rectification circuit rectification of its correspondence, rectification circuit output end is supporting have at least have two-way output the first voltage stabilizing circuit, wherein, one tunnel the first voltage stabilizing circuit adopts linear voltage-stabilizing circuit, the two-way voltage signal of described the first voltage stabilizing circuit output +/-15V, another road first voltage stabilizing circuit adopts a BUCK translation circuit, a described BUCK translation circuit divides two-way output, wherein a road signal is connected with normally opened relay, the contact of described relay is normally opened contact, when power generating facilities and power grids voltage accesses, the normally opened relay closing of contact, the output being connected with normally opened relay output 24V voltage signal, another road does not connect the output of normally opened relay and directly exports 24V voltage signal, and the 24V voltage signal of this road output is connected with the input of secondary signal converting unit simultaneously.When electric network source voltage occurs when abnormal, normally opened relay contact disconnects, and the output 24V voltage signal that is connected with normally opened relay stops output.
When relay is during in closure state, directly the 24V direct current signal of output is through inverter circuit for the output that does not connect normally opened relay, and the high frequency transformer transformation being connected with described inverter circuit and the second rectification circuit rectification, export direct current signal.The output of the described inverter circuit respectively primary coil of Yu San road high frequency transformer connects, the secondary coil output of each road transformer is through the second rectification circuit rectification of correspondence, voltage signal after rectification is through each self-corresponding the second voltage stabilizing circuit voltage stabilizing, and the voltage signal of exporting different amplitudes provides working power for haemodialysis control unit.Three-way output signal is respectively the voltage signal of two-way 5VHe mono-road 12V.
Wherein, described inverter circuit adopts full bridge inverter.Full bridge inverter be in single-phase inversion circuit, apply maximum.Certainly, those skilled in the art easily know, full bridge inverter can be regarded two half-bridge circuits as and combine, and four brachium pontis are divided into two pairs, brachium pontis conducting simultaneously in pairs, and two pairs of brachium pontis replace 180 ° of each conductings.No matter be full bridge inverter or half-bridge inversion circuit, the voltage signal of output, through Fourier expansion, can calculate inverter voltage signal.
Inverter voltage signal outputs to each self-corresponding the second rectification circuit after high frequency transformer conversion.
Described the second rectification circuit is for the ripple signal of filtering transformer output signal.
Voltage after rectifying and wave-filtering is not stable voltage, when line voltage or load change, voltage after rectifying and wave-filtering can change, and, ripple voltage is large, requires high equipment can cause the unstable even damage of equipment, therefore for voltage accuracy, output signal at the second filter circuit all needs the second corresponding linear voltage-stabilizing circuit voltage stabilizing, makes the voltage of output stablize within the specific limits constant.Fig. 3 is the theory diagram of the utility model the second embodiment neutral line voltage stabilizing circuit.When input voltage signal changes, linear voltage-stabilizing circuit is the size of regulation voltage automatically, makes the voltage signal of output keep constant.For example, when the voltage after rectifying and wave-filtering raises, output voltage raises, through sample circuit, sample, relatively amplifying circuit relatively after, Circuit tuning (triode) base current reduces, collector voltage raises, the voltage signal of output is reduced, remain that voltage signal is stabilized in a certain particular range.For the principle of linear voltage-stabilizing circuit, carried out simple description herein.Certainly, it will be readily appreciated by those skilled in the art that the development along with semiconductor technology, in practical application circuit, the linear voltage stabilization chip application of high integration is also very extensive.Therefore, for the form of linear voltage-stabilizing circuit, can select according to actual conditions.
Described device also comprises storage battery 9, battery electric quantity detecting unit 10, Single Switch of Soft Switching 11 and charging circuit 12, described charging circuit 12 comprises the 2nd BUCK translation circuit, the input of described the 2nd BUCK translation circuit is connected with the output of described the first rectification circuit, output is connected with the two poles of the earth of storage battery 9, described battery electric quantity detecting unit 10 is connected with key control unit 1, simultaneously, between storage battery 9 positive poles and a BUCK translation circuit output, be connected with Single Switch of Soft Switching 11, described Single Switch of Soft Switching 11 adopts field effect transistor as electronic switch.Key control unit 1, for occurring when electric network source voltage when abnormal, is controlled Single Switch of Soft Switching 11 conductings, changes the mode of operation of current device into storage battery power supply pattern; When battery electric quantity detecting unit (10) detects powered battery voltage and reaches predetermined threshold, control Single Switch of Soft Switching 11 cut-offs, storage battery (9) quits work.While adopting Single Switch of Soft Switching to carry out powering mode switching, can reduce resonance impact in generation aspect stability to device.
BUCK translation circuit is a kind of buck chopper device, and whether the electric current that buck converter output voltage average value is always less than in the common inductance of output voltage is continuous, depends on the numerical value of switching frequency, filter capacitor and electric capacity.The spread of voltage of simple BUCK circuit output, can be subject to load and outside interference.Therefore, in the present embodiment, BUCK translation circuit adds PID controller, realizes closed-loop control, by sampling element, obtains PWM modulating wave, comparing with reference voltage, by PID controller, obtain feedback signal, compare with triangular wave, the switching waveform after being modulated, using it as switching signal, can effectively improve the stability of output signal.
Wherein, the power output of described the 2nd BUCK translation circuit is less than the power output of a described BUCK translation circuit.
Described storage battery 9 adopts the circuit breaker that has of 24V to carry out earth leakage protective storage battery.When there is abnormal (as surpassed rated voltage AC220V ± 20%) in electric network source voltage, single-chip computer control system is controlled Single Switch of Soft Switching 11 conductings, disconnect simultaneously and exchange input relay cut-out mains-supplied, change the mode of operation of current device into storage battery power supply pattern, now ± 15V stops output, by normally opened relay, control Yi road+24V1 and stop output, another road+24V2 normally exports, and this output signal (+24V2) continues output+12V and two+5V power supply after the second change-over circuit conversion.Certainly, for the supply power voltage of storage battery 9, need to monitor at any time, when monitoring storage battery power supply voltage and reach predetermined threshold, storage battery quits work.In order to guarantee service efficiency and the useful life thereof of storage battery, in the present embodiment, described predetermined threshold is preferably when storage battery output voltage drops to 20V left and right, and storage battery quits work, and after line voltage recovers normal continuous five seconds, device is converted to mains supply.
When having normal AC signal input, the first conversion circuit unit is changed input signal, controls the operating state of a BUCK change-over circuit and Single Switch of Soft Switching by key control unit 1, and making charging circuit is that storage battery 9 charges.
Described device is connected with host computer by Modbus bus, according to the start and stop of remote control commands control device, and operation information and setup parameter that host computer can real-time displaying device.When power supply breaks down, buzzer can be reported to the police, and now user can, by connecting serial port communication line, start PC end monitoring software and check fault message.Described communication interface adopts RS485 serial communication interface, based on Modbus-RTU agreement, carries out half duplex communication.
Described device can also be connected with heater by adding thermal relay, and described key control unit 1 is controlled heating relay closes and disconnection according to the heater control command of controlling and status signal interface 2 is inputted.
For guaranteeing the reliable normal operation of whole Medical Devices, the relevant parameters of the power supply described in the present embodiment is as follows: 1. input service power supply: electrical network rated voltage AC220V ± 15%; Incoming frequency 50Hz+2Hz; Input current >=12A; DC+24V battery feed; 2. export seven road power supplys, design parameter specification requirement sees the following form 1; 3. adopt RS485 bus communication mode to control and monitor; 4. when network source voltage is undesired, adopt electronic switch to automatically switch to storage battery power supply, guarantee the free of discontinuities work of equipment, network source voltage recover normal after continuous five seconds electronic switch disconnect and automatically switch to mains supply.
Table 1
Described electric supply installation also meet to exchange the requirement of the functional parameters such as input overvoltage/undervoltage, storage battery overvoltage/undervoltage, VD are abnormal, overtemperature protection.
Here it should be noted that, the present embodiment just take there are 7 tunnels outputs electric supply installation as example is described, can not limit with this scope of the utility model protection.In actual applications, for parameters such as the way of supply power voltage, effective values, can according to the actual requirements the functional unit of described electric supply installation be adjusted, to meet the requirement of more equipment to electric supply installation.Certainly, in order to make the power consumption of whole device lower, volume is less, the components and parts in the present embodiment, circuit unit can adopt the power consumption of corresponding function lower, the electronic device of high integration and antijamming capability is strong, the circuit unit of high reliability etc. is replaced.Fig. 4 is the utility model schematic appearance.Described electric supply installation, on packing forms, comprises front panel, rear board and power supply main body.Front panel is provided with is with respectively 1 of earth leakage protective AC circuit breaker and storage battery circuit breaker; Exchange each 2 of input insurance and the insurances of storage battery side, be convenient to change; Have two LED light, red led L1 represents power failure, and green indicating lamp L2 represents that current power supply is working properly in moving, and two lamps all extinguish the current power supply of expression and are in holding state; Also has mains ac power supply input plug etc.Rear board is provided with DC terminal row, and for the voltage signal of power supply main body output is exported from terminal board, in addition, described rear board also comprises fan installing zone, for the additional radiator of power supply main part is carried out to wind-cooling heat dissipating.
This power supply has local and remote two kinds of mode of operations.The start-stop that user directly controls power supply by circuit breaker and the remote control switch of panel, but shutdown must have the condition that enables shutdown by software, and during without enable command, power supply does not close machine.If but two circuit breakers on panel are disconnected by force and also can make power supply quit work.
Technical scheme described in the present embodiment, can provide for Medical Devices the working power of difference in functionality quality requirements, and described working power has advantages of that volume is little, precision is high, ripple coefficient is low, high reliability, high-intelligentization and defencive function perfect.
Above are only preferred embodiment of the present utility model and institute's application technology principle; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, all should be encompassed in protection range of the present utility model.
Claims (10)
1. for an electric supply installation for haemodialysis control unit, it is characterized in that, described device comprises:
Key control unit (1);
Control and status signal interface (2);
Ac input end (3);
The first signal converting unit (4) with the output of at least one road;
With supporting first voltage stabilizing circuit (5) at least with two-way output being connected of described each output of first signal converting unit;
The secondary signal converting unit (6) with the output of at least one road;
With supporting the second voltage stabilizing circuit (7) being connected of described each output of secondary signal converting unit and communication interface (8);
Wherein, described ac input end (3) is connected with first signal converting unit (5) with key control unit (1) respectively by relay, and key control unit (1) is according to closure and the disconnection of the control signal control relay of control and status signal interface (2) input; The output of described the first voltage stabilizing circuit (5) Yi road is connected with the input of secondary signal converting unit (6);
Key control unit (1) carries out data interaction by communication interface (8) and haemodialysis control unit;
Described first signal converting unit comprises having the Industrial Frequency Transformer of at least one road output and the first rectification circuit being connected with described Industrial Frequency Transformer output;
Described secondary signal converting unit comprises inverter circuit, the high frequency transformer with the output of at least one road being connected with described inverter circuit output, the second rectification circuit being connected with described high frequency transformer output.
2. electric supply installation according to claim 1, it is characterized in that, described the first voltage stabilizing circuit comprises the BUCK translation circuit being connected with key control unit (1), a described BUCK translation circuit divides two-way output, wherein a road output signal connects normally opened relay, when line voltage fault, relay contact disconnects, and stops output.
3. electric supply installation according to claim 2, it is characterized in that, described device also comprises storage battery (9), battery electric quantity detecting unit (10), Single Switch of Soft Switching (11), described key control unit (1) is connected with Single Switch of Soft Switching (11) and battery electric quantity detecting unit (10) respectively, meanwhile, described Single Switch of Soft Switching (11) is connected between a BUCK translation circuit output and storage battery (9) output; Wherein, key control unit (1), for occurring when electric network source voltage when abnormal, is controlled Single Switch of Soft Switching (11) conducting, changes the mode of operation of current device into storage battery power supply pattern; When battery electric quantity detecting unit (10) detects powered battery voltage and drops to predetermined threshold, control Single Switch of Soft Switching (11) cut-off, storage battery (9) quits work.
4. electric supply installation according to claim 3, it is characterized in that, described device also comprises charging circuit (12), described charging circuit (12) comprises the 2nd BUCK translation circuit, the input of described the 2nd BUCK translation circuit is connected with the output of described the first rectification circuit, output is connected with the two poles of the earth of storage battery, and wherein, the power output of described the 2nd BUCK translation circuit is less than the power output of a described BUCK translation circuit.
5. according to the electric supply installation one of claim 1 to 4 Suo Shu, it is characterized in that, described inverter circuit comprises full bridge inverter.
6. according to the electric supply installation one of claim 1 to 4 Suo Shu, it is characterized in that, described device is connected with host computer by Modbus bus, according to the start and stop of remote control commands control device; Host computer can real-time displaying device operation information and setup parameter.
7. according to the electric supply installation one of claim 1 to 4 Suo Shu, it is characterized in that, described device is connected with heater by adding thermal relay, and described key control unit (1) is controlled heating relay closes and disconnection according to the heater control command of controlling and status signal interface (2) is inputted.
8. according to the electric supply installation one of claim 1 to 4 Suo Shu, it is characterized in that, described control and status signal interface (2) connect indicator light and warning device.
9. according to the electric supply installation one of claim 1 to 4 Suo Shu, it is characterized in that, described communication interface adopts RS485 serial communication interface, based on Modbus-rtu protocol, carries out half duplex communication.
10. according to the electric supply installation one of claim 1 to 4 Suo Shu, it is characterized in that, described device also comprises AC circuit breaker and storage battery circuit breaker, for carrying out earth leakage protective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320245234.3U CN203445788U (en) | 2013-05-08 | 2013-05-08 | Power supply apparatus applied to hemodialysis machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320245234.3U CN203445788U (en) | 2013-05-08 | 2013-05-08 | Power supply apparatus applied to hemodialysis machine |
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| CN203445788U true CN203445788U (en) | 2014-02-19 |
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| CN201320245234.3U Expired - Lifetime CN203445788U (en) | 2013-05-08 | 2013-05-08 | Power supply apparatus applied to hemodialysis machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515409A (en) * | 2015-12-11 | 2016-04-20 | 易事特集团股份有限公司 | Ac-dc power supply circuit |
| CN107612372A (en) * | 2017-09-26 | 2018-01-19 | 西南医科大学附属医院 | A kind of hemodialyzer precision voltage source |
| CN108136095A (en) * | 2015-10-14 | 2018-06-08 | 甘布罗伦迪亚股份公司 | The kidney failure treatment system and method for the safe treatment on electric power |
| CN110495085A (en) * | 2017-04-10 | 2019-11-22 | 沃尔缔夫能源系统有限公司 | DC-DC converter with bullet type terminal |
-
2013
- 2013-05-08 CN CN201320245234.3U patent/CN203445788U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108136095A (en) * | 2015-10-14 | 2018-06-08 | 甘布罗伦迪亚股份公司 | The kidney failure treatment system and method for the safe treatment on electric power |
| CN108136095B (en) * | 2015-10-14 | 2020-10-27 | 甘布罗伦迪亚股份公司 | Renal failure therapy system and method for electrically safe therapy |
| US10926018B2 (en) | 2015-10-14 | 2021-02-23 | Gambro Lundia Ab | Renal failure therapy system and method for electrically safe treatment |
| CN105515409A (en) * | 2015-12-11 | 2016-04-20 | 易事特集团股份有限公司 | Ac-dc power supply circuit |
| CN110495085A (en) * | 2017-04-10 | 2019-11-22 | 沃尔缔夫能源系统有限公司 | DC-DC converter with bullet type terminal |
| CN107612372A (en) * | 2017-09-26 | 2018-01-19 | 西南医科大学附属医院 | A kind of hemodialyzer precision voltage source |
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