CN205268824U - A discharging protecting circuit and external defibrillator for external defibrillator - Google Patents
A discharging protecting circuit and external defibrillator for external defibrillator Download PDFInfo
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- CN205268824U CN205268824U CN201520804100.XU CN201520804100U CN205268824U CN 205268824 U CN205268824 U CN 205268824U CN 201520804100 U CN201520804100 U CN 201520804100U CN 205268824 U CN205268824 U CN 205268824U
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Abstract
The embodiment of the utility model discloses a discharging protecting circuit and external defibrillator for external defibrillator. The one end of electric capacity links to each other with the one end of inductance, and the other end is continuous with the second end of second switch and fourth switch respectively, the other end of inductance is continuous with the first end of first switch and third switch respectively, the second end of first switch is continuous with the first end of first electrode piece and second switch respectively, the second end of third switch is continuous with the first end of second electrode piece and fourth switch respectively, the first output of a isolating driver circuit links to each other with the third of first switch end, the second output links to each other with the third end of fourth switch, the third end of second switch links to each other with the first output of the 2nd isolating driver circuit, the third end of third switch links to each other with the second output of the 2nd isolating driver circuit, the diphase signal is exported respectively to NOR gate logic circuit's first output and second output. Use the utility model discloses, can improve the operational reliability of external defibrillator.
Description
Technical field
This utility model relates to armarium technology, particularly relates to a kind of discharge protection circuit for external defibrillator and external defibrillator.
Background technology
Cardiac sudden death (SCD, SuddenCardiacDeath) is the major causes of death of cardiovascular disease, accounts for more than the 50% of cardiovascular disease death sum. The reason major part causing SCD is the momentary dysfunction and electrophysiological change that occur on all kinds of cardiovascular pathological changes bases, and cause malignant ventricular arrhythmia, such as, ventricular tachycardia (VT, VentricularTachycardia, it is called for short room speed) and ventricular fibrillation (VF, VentricularFibrillation are called for short room and quiver) etc. Research shows, once generation chamber is quivered, often procrastinates one minute, defibrillation success rate will decline 10%, room quiver generation 10 minutes after, defibrillation success rate is almost nil, thus, quiver in room generation time, utilize defibrillator in time patient is carried out electric defibrillation be save patient key.
Defibrillator includes internal defibrillation device and external defibrillator, due to external defibrillator have easy to use, can immediately carry out defibrillation, be widely used. Such as, external defibrillator (AED, AutomatedExternalDefibrillator) after being powered up, by pressing discharge button star t-up discharge circuit, shocked by electricity human body by pulsed discharge, electrocardiogram can be automatically performed automatically analyze, quiver and room speed based on analyzing the result room of identification automatically, thus implementing defibrillation in time, owing to defibrillation is implemented early, success rate is higher, can improve patient's success of cardiopulmonary resuscitation rate, be stop suddenly in heart beating, generation chamber is when quivering, by shocking by electricity, cardiac stimulus makes it recover the Portable medical instrument of normal condition.
Wherein, the capacitance of discharge circuit for discharging is sized to tens to hundreds of microfarad, and the highest storage energy is up to 600 joules, and voltage reaches several kilovolts, and the time of pulsed discharge only has several milliseconds to a few tens of milliseconds. Thus, when electric discharge, stability and the security reliability of discharge circuit are particularly important.
Fig. 1 is prior art discharge circuit structural representation. Referring to Fig. 1, this discharge circuit includes: electric capacity (C), the first inductance (L1), the first electrode slice, the second electrode slice, the first switch (SW1), second switch (SW2), the 3rd switch (SW3), the 4th switch (SW4) and human body resistance (R), wherein
First electrode slice, the second electrode slice, the first switch, second switch, the 3rd switch, the 4th switch and human body resistance form a H bridge, and another that the first switch and the together arm side that second switch is H bridge, the 3rd switch and the 4th switch are H bridge is with arm side.
One end of electric capacity is connected with one end of inductance, the other end of inductance is connected with the first end of the first switch and the 3rd switch respectively, the other end of electric capacity is connected with the second end of second switch and the 4th switch respectively, second end of the first switch is connected with the first end of the first electrode slice and second switch respectively, second end of the 3rd switch is connected with the first end of the second electrode slice and the 4th switch respectively, and the first electrode slice, the second electrode slice are connected with human body respectively.
First switch, second switch, the 3rd switch and the 4th are switched on-off and are controlled by Ui signal, pass through in the process of pulsed discharge electric shock human body utilizing discharge circuit, require at same time point, the same arm side switch of H bridge can not simultaneously turn on, to avoid H bridge that straight-through phenomenon occurs, cause that switch burns out, thus affecting the normal use of external defibrillator. But the existing method by Ui signal control the first switch to the 4th switch on and off, due to Ui signal from high electricity frequency signal be converted to low level signal time, there is mutually overlapping part, thus the same arm side switch easily caused by H bridge simultaneously turns on, the security reliability making external defibrillator is relatively low, reduces the service life of external defibrillator.
Utility model content
In view of this, this utility model embodiment provides a kind of discharge protection circuit for external defibrillator and external defibrillator, improves the functional reliability of external defibrillator.
For reaching above-mentioned purpose, embodiment of the present utility model adopts the following technical scheme that
On the one hand; this utility model embodiment provides a kind of discharge protection circuit for external defibrillator; including: electric capacity, inductance, the first electrode slice, the second electrode slice, the first switch, second switch, the 3rd switch, the 4th switch, the first isolated drive circuit, the second isolated drive circuit and nor gate logic circuit; wherein
First electrode slice, the second electrode slice, the first switch, second switch, the 3rd switch, the 4th switch composition one H bridge, another that the first switch and the together arm side that second switch is H bridge, the 3rd switch and the 4th switch are H bridge is with arm side;
One end of electric capacity is connected with one end of inductance, and the other end is connected with the second end of second switch and the 4th switch respectively;
The other end of inductance is connected with the first end of the first switch and the 3rd switch respectively;
3rd end of the first switch and the first outfan of the first isolated drive circuit are connected;
3rd end of the 4th switch and the second outfan of the first isolated drive circuit are connected;
3rd end of second switch and the first outfan of the second isolated drive circuit are connected;
3rd end of the 3rd switch and the second outfan of the second isolated drive circuit are connected;
Wherein, first switching drive signal of the first outfan output of the first isolated drive circuit and the 4th switching drive signal state synchronized of the second outfan output, the second switch of the first outfan output of the second isolated drive circuit drives the driving status signal of the 3rd switch of signal and the output of the second outfan to synchronize;
Nor gate logic circuit is for processing the pulse-width signal of input, export first in diphase signal by the first outfan and output signal to the input of the first isolated drive circuit, export second in diphase signal by the second outfan and output signal to the input of the second isolated drive circuit.
Preferably, described nor gate logic circuit includes: the first nor gate, the second nor gate, the 3rd nor gate, four nor gate, the 5th nor gate and the 6th nor gate, wherein,
The first input end of the first nor gate and the second input receive pwm signal, and the first input end of outfan and the second nor gate is connected;
Second input of the second nor gate receives the brake signal pre-set, the first input end of outfan and the 3rd nor gate and the second input and is connected;
The outfan of the 3rd nor gate is connected with the second input of the first input end of four nor gate and the 6th nor gate respectively;
Second input of four nor gate receives the direction signal pre-set, and outfan exports the first driving signal input to the first isolated drive circuit;
The first input end of the 5th nor gate and the second input receive the direction signal pre-set, and the first input end of outfan and the 6th nor gate is connected;
The outfan of the 6th nor gate exports the two driving signal input to the second isolated drive circuit.
Preferably, described brake signal, direction signal and pwm signal are exported according to concrete control strategy by the microcontroller pre-set.
Preferably, described first switch includes to the 4th switch: insulated gate bipolar transistor, complementary metal oxide semiconductors (CMOS) pipe, audion or bipolar transistor.
Preferably, described metal-oxide-semiconductor includes but not limited to: P-channel metal-oxide-semiconductor or N-channel MOS pipe.
Preferably, described first end is drain electrode, and the second end is source electrode, and the 3rd end is grid.
A kind of external defibrillator, it is characterised in that include the discharge protection circuit described in aforementioned any embodiment.
The discharge protection circuit for external defibrillator of this utility model embodiment offer and external defibrillator, by adding nor gate logic circuit, when electric discharge, pwm signal is through having enable and controlling the nor gate logic circuit in direction, export one group of diphase signal, in order to control the conducting state of two switches of H bridge corresponding arm, thereby may be ensured that in discharge process, on H bridge corresponding arm, all only one of which switch is conducting, avoid and burn out switch because two switches of H bridge corresponding arm simultaneously turn on, improve the reliability and stability of discharge protection circuit, and then improve functional reliability and the work efficiency of external defibrillator.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is prior art discharge circuit structural representation;
Fig. 2 is this utility model embodiment discharge protection circuit structural representation for external defibrillator.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model embodiment is described in detail.
It will be appreciated that described embodiment a part of embodiment that is only this utility model, rather than whole embodiment. Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Fig. 2 is this utility model embodiment discharge protection circuit structural representation for external defibrillator. Referring to Fig. 2; this discharge protection circuit includes: electric capacity 21, inductance 22, human body resistance the 23, first switch 24, second switch the 25, the 3rd switch the 26, the 4th switch the 27, second electrode slice the 20, first electrode slice the 28, first isolated drive circuit the 38, second isolated drive circuit 37 and nor gate logic circuit 29; wherein
Human body resistance 23, first switchs 24, second switch the 25, the 3rd switchs the 26, the 4th switch 27 and first electrode slice the 28, second electrode slice 20 forms a H bridge, first switch the 24 and the 4th switch 27 be the together arm side of H bridge, and it is that another of H bridge is with arm side that the 3rd switch 26 and the 4th switchs 27;
One end of electric capacity 21 is connected with one end of inductance 22, and the other end is connected with the second end of second switch 25 and the 4th switch 27 respectively;
The other end of inductance 22 is connected with the first end of the first switch 24 and the 3rd switch 26 respectively;
Second end of the first switch 24 is connected with the first end of the first electrode slice 28 and second switch 25 respectively;
Second end of the 3rd switch 26 is connected with first end of one end of the second electrode slice 20 and the 4th switch 27 respectively;
Human body 23 is connected with first electrode slice the 28, second electrode slice 20 respectively;
3rd end of the first switch 24 and the first outfan of the first isolated drive circuit 38 are connected;
3rd end of the 4th switch 27 and the second outfan of the first isolated drive circuit 38 are connected;
3rd end of second switch 25 and the first outfan of the second isolated drive circuit 37 are connected;
3rd end of the 3rd switch 26 and the second outfan of the second isolated drive circuit 37 are connected;
Wherein, first switching drive signal of the first outfan output of the first isolated drive circuit 38 and the 4th switching drive signal state synchronized of the second outfan output, amplitude is different, the second switch of the first outfan output of the second isolated drive circuit 37 drives the driving status signal of the 3rd switch of signal and the output of the second outfan to synchronize, and amplitude is different;
First isolated drive circuit 38 is for driving signal to carry out transformation isolation to the first of input, isolate state synchronized, the first switching drive signal that amplitude is different and the 4th switching drive signal, second isolated drive circuit 37 is for carrying out transformation isolation to the two driving signal of input, isolating state synchronized, the second switch that amplitude is different drives signal and the 3rd switching drive signal; Wherein, first switching drive signal exports the 3rd end to the first switch 24,4th switching drive signal exports the 3rd end to the 4th switch 27, and second switch drives signal output to the 3rd end of second switch 25, and the 3rd switching drive signal exports the 3rd end to the 3rd switch 26;
Nor gate logic circuit 29 is for the pulsewidth modulation (PWM to input, PulseWidthModulation) signal processes, export first in diphase signal by the first outfan and output signal to the input of the first isolated drive circuit 38, export second in diphase signal by the second outfan and output signal to the input of the second isolated drive circuit 37.
In this utility model embodiment, preferably, first switch includes but not limited to the 4th switch: insulated gate bipolar transistor (IGBT, InsulatedGateBipolarTransistor), complementary metal oxide semiconductors (CMOS) pipe (MOS, MetalOxideSemiconductor), audion or bipolar transistor (BJT, BipolarJunctionTransistor) etc. Wherein, metal-oxide-semiconductor includes but not limited to: P-channel metal-oxide-semiconductor, N-channel MOS pipe etc.
For switch (the first switch switchs to the 4th) for insulated gate bipolar transistor, in this utility model embodiment, the first end is drain electrode, and the second end is source electrode, and the 3rd end is grid. Certainly, in practical application, it is also possible to be the first end be source electrode, the second end is drain electrode, and the 3rd end is grid. So, if the voltage of insulated gate bipolar transistor grid is more than the voltage of source electrode, insulated gate bipolar transistor is in the conduction state, if the voltage of insulated gate bipolar transistor grid is less than the voltage of drain electrode, insulated gate bipolar transistor is off.
In this utility model embodiment, as an alternative embodiment, nor gate logic circuit includes: first nor gate the 31, second nor gate the 32, the 3rd nor gate 33, four nor gate the 34, the 5th nor gate 35 and the 6th nor gate 36, wherein,
The first input end of the first nor gate 31 and the second input receive pwm signal, and the first input end of outfan and the second nor gate 32 is connected;
Second input of the second nor gate 32 receives the brake signal pre-set, the first input end of outfan and the 3rd nor gate 33 and the second input and is connected;
The outfan of the 3rd nor gate 33 is connected with the second input of the first input end of four nor gate 34 and the 6th nor gate 36 respectively;
Second input of four nor gate 34 receives the direction signal pre-set, and outfan exports the first driving signal input to the first isolated drive circuit 38;
The first input end of the 5th nor gate 35 and the second input receive the direction signal pre-set, and the first input end of outfan and the 6th nor gate 36 is connected;
The outfan of the 6th nor gate 36 exports the two driving signal input to the second isolated drive circuit 37.
In this utility model embodiment, nor gate is the gate circuit with multiterminal input and Single-end output. When the input of arbitrary multiterminal is high level (logical one), output is exactly low level (logical zero); Only when all inputs are all low level (logical zeroes), output is only high level (logical one).
It is preferred that pwm signal can be produced by microcontroller and export, microcontroller produces and output duty cycle is fixed or changes adjustable pwm signal. Brake signal isSignal, direction signal is DIR signal, and the first driving signal is AHEAD signal, and two driving signal is CONTRARY signal.
In this utility model embodiment, need three signals when human body is discharged: pwm signal, brake signal and direction signal. As an alternative embodiment, brake signal, direction signal and pwm signal by microcontroller according to concrete control strategy output, can also not repeat them here.
Table 1 is the truth table of each signal in discharge protection circuit.
Table 1
| Pwm signal | Brake signal | Direction signal | First drives signal | Two driving signal |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 | 0 |
| 0 | 1 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 | 0 |
| 1 | 0 | 0 | 1 | 0 |
| 1 | 0 | 1 | 0 | 1 |
| 1 | 1 | 0 | 0 | 0 |
| 1 | 1 | 1 | 0 | 0 |
In table 1, high level signal is logical one, and low level signal is logical zero. From table 1, first drives signal and two driving signal not to have state for high level simultaneously, and namely two IGBT of the corresponding arm of H bridge switch and will not simultaneously turn on. This type of drive is possible to prevent two IGBT Switch Cut-through of corresponding arm on H bridge, causes IGBT switch short to burn out, discharge protection circuit serves the effect adequately protected, and improves stability and the reliability of circuit.
In this utility model embodiment, about the parameter value of electric capacity, inductance, can determine according to being actually needed, belong to known technology, omit detailed description at this.
Operation principle about the setting of brake signal and direction signal, nor gate and discharge protection circuit belongs to known technology, omits detailed description at this.
In this utility model embodiment, when discharge protection circuit discharges, it is ensured that H bridge is positioned at corresponding arm two IGBT switch (such as, the first switch and the 4th switch, or, second switch and the 3rd switch) will not simultaneously turn on extremely important. in vitro during defibrillator normal operation, electric capacity 21, inductance 22, first switch 24, human body 23, second electrode slice 20, first electrode slice 28 and the 4th switch 27 formation the first performance loop, or, electric capacity 21, inductance 22, 3rd switch 26, first electrode slice 28, second electrode slice 20, human body 23 and second switch 25 form the second performance loop, the total impedance of discharge protection circuit is impedance and human body impedance (first electrode slice 28 of each components and parts of discharge protection circuit, the impedance R that second electrode slice 20 is connected to form with human body) sum, and the impedance of each components and parts is much smaller than human body impedance. if two IGBT switches of H bridge corresponding arm simultaneously turn on, owing to the impedance of each components and parts is minimum, first performance loop becomes electric capacity 21, inductance 22, first switch 24 and second switch 25, or, second performance loop becomes electric capacity 21, inductance 22, 3rd switch 26 and the 4th switch 27, the electric current in performance loop is made to flow directly back into negative pole from the positive pole of discharge protection circuit through two IGBT switches of corresponding arm, owing to the voltage in discharge protection circuit is about 1500v, therefore the electric current flow through on discharge protection circuit is excessive, two the IGBT switches making corresponding arm are burned.
In this utility model embodiment, by adding nor gate logic circuit, when electric discharge, exported the pwm signal (pulse signal) of 1MHZ by microprocessor controls, through there is enable and controlling the nor gate logic circuit in direction, export one group of diphase signal. Wherein, when electric discharge, first driving signal is pulse signal, two driving signal is drive, with first, the signal that signal is contrary, two drive signal for driving IGBT switch (the first switch and the 4th switch) conducting of signal with first, persistent period is the width of pulse signal, and two with two driving signal for driving IGBT switch (second switch and the 3rd switch) cut-off of signal. When first drives signal to become low level, two driving signal is pulse signal, now, two, with two driving signal for driving the IGBT switch conduction of signal, carry out anti-phase electric discharge, and the persistent period is the width of pulse signal, then ending, now one group of diphase signal electric discharge terminates simultaneously.
So, the conducting state of two IGBT switches of H bridge corresponding arm is controlled by diphase signal, thereby may be ensured that in discharge process, on H bridge corresponding arm, all only one of which IGBT switch is conducting, namely side arm conducting state is consistent, and the conducting state of corresponding arm is inconsistent, thereby through hardware circuit design, two IGBT switches of the corresponding arm controlling H bridge do not have the state of simultaneously turning on, avoid and burn out IGBT switch because two IGBT switches of H bridge corresponding arm simultaneously turn on, improve the reliability and stability of discharge protection circuit, and then ensure that external defibrillator can use normally when electric discharge, improve functional reliability and the work efficiency of external defibrillator.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can be by the hardware that computer program carrys out instruction relevant to complete, described program can be stored in a computer read/write memory medium, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each side method. Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should be encompassed within protection domain of the present utility model. Therefore, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (7)
1. the discharge protection circuit for external defibrillator; it is characterized in that; this discharge protection circuit includes: electric capacity, inductance, the first electrode slice, the second electrode slice, the first switch, second switch, the 3rd switch, the 4th switch, the first isolated drive circuit, the second isolated drive circuit and nor gate logic circuit; wherein
First switch, second switch, the 3rd switch, the 4th switch, the first electrode slice and the second electrode slice form a H bridge, and another that the first switch and the together arm side that second switch is H bridge, the 4th switch and the 3rd switch are H bridge is with arm side;
One end of electric capacity is connected with one end of inductance, and the other end is connected with the second end of second switch and the 4th switch respectively;
The other end of inductance is connected with the first end of the first switch and the 3rd switch respectively;
Second end of the first switch is connected with the first end of the first electrode slice and second switch respectively;
Second end of the 3rd switch is connected with the first end of the second electrode slice and the 4th switch respectively;
3rd end of the first switch and the first outfan of the first isolated drive circuit are connected;
3rd end of the 4th switch and the second outfan of the first isolated drive circuit are connected;
3rd end of second switch and the first outfan of the second isolated drive circuit are connected;
3rd end of the 3rd switch and the second outfan of the second isolated drive circuit are connected;
Wherein, first switching drive signal of the first outfan output of the first isolated drive circuit and the 4th switching drive signal state synchronized of the second outfan output, the second switch of the first outfan output of the second isolated drive circuit drives the driving status signal of the 3rd switch of signal and the output of the second outfan to synchronize;
Nor gate logic circuit is for processing the pulse-width signal of input, export first in diphase signal by the first outfan and output signal to the input of the first isolated drive circuit, export second in diphase signal by the second outfan and output signal to the input of the second isolated drive circuit.
2. the discharge protection circuit for external defibrillator according to claim 1; it is characterized in that; described nor gate logic circuit includes: the first nor gate, the second nor gate, the 3rd nor gate, four nor gate, the 5th nor gate and the 6th nor gate, wherein
The first input end of the first nor gate and the second input receive pwm signal, and the first input end of outfan and the second nor gate is connected;
Second input of the second nor gate receives the brake signal pre-set, the first input end of outfan and the 3rd nor gate and the second input and is connected;
The outfan of the 3rd nor gate is connected with the second input of the first input end of four nor gate and the 6th nor gate respectively;
Second input of four nor gate receives the direction signal pre-set, and outfan exports the first driving signal input to the first isolated drive circuit;
The first input end of the 5th nor gate and the second input receive the direction signal pre-set, and the first input end of outfan and the 6th nor gate is connected;
The outfan of the 6th nor gate exports the two driving signal input to the second isolated drive circuit.
3. the discharge protection circuit for external defibrillator according to claim 2, it is characterised in that described brake signal, direction signal and pwm signal are exported according to concrete control strategy by the microcontroller pre-set.
4. the discharge protection circuit for external defibrillator according to any one of claims 1 to 3; it is characterized in that, described first switch includes to the 4th switch: insulated gate bipolar transistor, complementary metal oxide semiconductors (CMOS) pipe, audion or bipolar transistor.
5. the discharge protection circuit for external defibrillator according to claim 4, it is characterised in that described metal-oxide-semiconductor includes but not limited to: P-channel metal-oxide-semiconductor or N-channel MOS pipe.
6. the discharge protection circuit for external defibrillator according to claim 4, it is characterised in that described first end is drain electrode, and the second end is source electrode, and the 3rd end is grid.
7. an external defibrillator, it is characterised in that include the discharge protection circuit described in aforementioned any one of claim 1-6.
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| CN201520804100.XU CN205268824U (en) | 2015-10-16 | 2015-10-16 | A discharging protecting circuit and external defibrillator for external defibrillator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251123A (en) * | 2015-10-16 | 2016-01-20 | 安科乐康（北京）诊断技术有限公司 | Discharge protection circuit used for automated external defibrillator, and automated external defibrillator |
| CN109966644A (en) * | 2019-03-21 | 2019-07-05 | 百纳川医疗科技(苏州)有限公司 | Defibrillator discharge protection circuit, defibrillator discharge system and defibrillator |
-
2015
- 2015-10-16 CN CN201520804100.XU patent/CN205268824U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251123A (en) * | 2015-10-16 | 2016-01-20 | 安科乐康（北京）诊断技术有限公司 | Discharge protection circuit used for automated external defibrillator, and automated external defibrillator |
| CN109966644A (en) * | 2019-03-21 | 2019-07-05 | 百纳川医疗科技(苏州)有限公司 | Defibrillator discharge protection circuit, defibrillator discharge system and defibrillator |
| CN109966644B (en) * | 2019-03-21 | 2023-05-12 | 百纳川医疗科技(苏州)有限公司 | Discharge protection circuit for defibrillator, defibrillator discharge system and defibrillator |
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Effective date of registration: 20180926 Address after: 102299 Beijing Changping District science and Technology Park, Zhenxing Road, 36, Cage 2, 212, 214, 215, 217 Patentee after: Lekang Tech (Beijing) Technology Co. Ltd. Address before: 100083 Beijing Haidian District Fengxian Middle Road 7 hatch Building 2 floor 211 Patentee before: Bianco Le Kang (Beijing) Diagnosis Technology Co. Ltd. |