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參數資料
| 型號： | ZL70009 |
| 英文描述： | Medical Surge Protection Device. 5-branch |
| 中文描述： | 醫(yī)療電涌保護器。 5枝 |
| 文件頁數： | 5/12頁 |
| 文件大?。?/td> | 743K |
| 代理商： | ZL70009 |
Data Sheet
ZL70002/08/09/10
5
SEMICMF.019
2.0
Application
According to the EN-45502 standard, all active medical devices intended for implantation in a human torso should
not be permanently affected by an external defibrillation of the patient. Compliance is confirmed if the implanted
device continues to meet device specification after being subjected to a sequence of 140 Volt pulses in series with
a 300 Ohm resistor between each conductive part of the device including the device case (see EN-45502 for
details). Using the ZL70002/08/09/10 protects the implantable device and is an effective means of compliance with
the EN-45502 standard where the electronics, in almost all cases, would be destroyed if not protected. The same
compliance tests are also described in EN-50061.
In the application example shown in Figure 6, each of the dual chamber pacemaker's terminals and case are
connected to a terminal on the protection device. If a defibrillation pulse causes the ventricular tip to begin to go
positive, relative to the case, the ZL70008/9 thyristor structure rapidly becomes active and forms a low impedance
path between T2 and T3 to absorb the current and limit the voltage. This provides an effective means of protection
to the pacemaker chip. In actuality, the voltages and currents the implanted device is subjected to in an actual
defibrillation can be higher than described in EN-45502/EN-50061 and has been taken into account when designing
the ZL70002/08/09/10 family.
Figure 6 - Pacemaker Application Example
Terminals placed most remotely to others should get special attention since they effectively form a large pick-up
coil and could therefore be exposed to a large amount of current. When implanted, the pacemaker case is placed
beneath the collarbone and all other terminals are placed together inside the heart. For this reason, the largest
current will pass through the surge protection terminal connected to the case of the pacemaker. For ZL70008/9, we
recommend that the case be connected to T3 of the protection device which is designed to be able to withstand the
largest amount of current. If device ZL700010 is used in a 5 terminal application, we recommend that 2 pins of the
protection device be connected to the implantable device terminal with the largest current flow (typically the terminal
for the device case).
Analog chip
T1
T2
T3
T4
T5
Atrial tip lead
Atrial ring lead
Case
Ventricular tip lead
Ventricular ring lead
Typical Dual Chamber Pacemaker
Surge Protection Device
ZL70008/09
Stimulation
and
Sensing
block
Charge
Pump
Voltage
and
Current
Reference
Digital
chip
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相關代理商/技術參數 |
參數描述 |
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| ZL70010 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Medical Surge Protection Devices |
| ZL70100 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Medical Implantable RF Transceiver |
| ZL70100LDF1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Medical Implantable RF Transceiver |
| ZL70100LDG1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Medical Implantable RF Transceiver |
| ZL70101 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Medical Implantable RF Transceiver |
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