SBS - The best value in QMS software

IEC 60601-2-2 - Defib-proof test amendment to base standard

#1
Hello,

60601-2-2 changes the defib proof test to limit test condition to be:

1. Common mode
2. 2kV test pulse

The rationale for the 2kV test pulse is pretty clear in the standard. But I did not find any rationale for the common mode test.

Does anyone know if the older editions of the 60601-2-2 might have the explanation, or can someone tell me what the rationale might be?
 
Elsmar Forum Sponsor
#2
Hello,

I read the rationale in 60601-2-2 again, and it does state:

"The common mode test represents the situation that can occur with the use of a defibrillator in combination with HF SURGICAL ACCESSORIES and HF APPLIED PARTS."

I think might understand it but want to check:

When a defibrillation event occurs, is the thought that it is unlikely that the active electrode will be in contact with the patient? Therefore, the only patient connection during defibrillation is from the neutral electrode, and the defib paddles.

Is this the correct situation that would result in a test setup to be common mode only?
 

Peter Selvey

Staff member
Super Moderator
#3
For defib proof test there is differential mode (between applied parts) and common mode (all applied parts at the same time). The differential mode test is the toughest as this potentially stresses the functional electronics of the applied part, for example applying 5000V pulse between RA and LA in an ECG. You can imagine the ECG electronics are designed only for ±5V or ±3V operation, so you need a special network to limit and absorb the effects of a differential pulse that large.

In IEC 60601-2-2 the standard is saying that the active electrode won't be in contact with the patient during defibrillation, hence the differential mode test is N/A, leaving only the common mode test.

Interesting thought: what happens to the active electrode during defibrillation? If it changes from being applied part to "operator accessible" then it would normally fail the test, since it is not isolated from the neutral electrode. In other words, during defibrillation it could be a source of shock to operators. Might be best not to open that can of worms ...
 
Thread starter Similar threads Forum Replies Date
JoCam IEC 60601-1 and 60601-1-2 retest after PCBA change IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
K IEC 60601-1:2005/AMD2:2020, Why this standard version is 3.0? IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
C IEC 60601 - 8.8.3 Dielectric Strength test. 4kv being applied to the ground conductor?! IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
R IEC 60601-1 Clause 15.3.2, Push test IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
A Defining a lower ESD test level in IEC 60601 safety test IEC 60601 - Medical Electrical Equipment Safety Standards Series 5
J IEC 60601-1-11 Home Class II With Ballasts IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
A Coverage and differences: EN 60601-1:2006+A12:2014 Vs AAMI/IEC 60601-1:2005+AMD1:2012 IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
T IEC 60601-1-8:2020 Is it necessary to change the alarm melody? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
M Is it normal / sufficient to have only the IEC 60601-1-2 test report without indicating IEC 60601-1? IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
S IEC 60601-2-30 - Is it mandatory to claim alarms? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
Y Auditory alarm standard IEC 60601-1-8 Reliability Analysis - Predictions, Testing and Standards 0
R IEC 60601-1 - Power Supply Cords (Section 8.11.3.1) IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
A Outsourcing IEC 60601-1 Ed 3.2 Testing IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
R Complex IEC 60601-1 gap assessment IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
D SINGLE FAULT CONDITION, short circuit and open circuit of any component (IEC 60601-1 3.1) IEC 60601 - Medical Electrical Equipment Safety Standards Series 9
H IEC 60601-1 ME equipment or ME system IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
M How does IEC-60601-1 apply to a non-medical device in the patient vicinity? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
R IEC 60601-1 - 11.1.3 e) Test criteria - Temperature Measurements IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
R IEC 60601-1 - Magnesium oxide used for the electrical insulation of heating elements IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
M Is IEC 60601-1-2 required by FDA for all electronic medical devices? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
Z IEC 60601-2-25; Frequency response test Medical Device and FDA Regulations and Standards News 1
N IEC 60601-1-1 - Stress test, reference voltage IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
R IEC 60601-1:2005+AMD1:2012+AMD2:2020 CSV IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
B IEC 60601 - Creepage Distance - Relay that acts as a means of physical mechanical protection Process Maps, Process Mapping and Turtle Diagrams 0
T Single Fault Condition IEC 60601 Clause 8.7.1 shorting Cr/Cl in Patient Applied Part IEC 60601 - Medical Electrical Equipment Safety Standards Series 7
M What to Expect from Next IEC 60601-1 and IEC 60601-1-2 Amendments? IEC 60601 - Medical Electrical Equipment Safety Standards Series 7
D IEC 60601-1 - Service life testing IEC 60601 - Medical Electrical Equipment Safety Standards Series 8
R Hand transmitted vibration 9.6.3 of IEC 60601-1 IEC 60601 - Medical Electrical Equipment Safety Standards Series 4
A IEC 60601 11.2.2.1 Risk of Fire in an Oxygen Rich Environment, Source of Ignition IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
E PEMS Hazards - IEC 60601 Clause 14.6 - Internal data use - Pressure sensor IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
W IEC 60601 - Essential performance c.2.34 IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
B IEC 60601-2-43 - Clause 203.6.103 - Physical button? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
M IEC 60601-1 1988 - Device developed in 2012 with standard of 1988 IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
A IEC 60601-1 Dielectric Strength test for battery operated devices IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
E IEC 60601-1 - Unearthed Medical Device Metal Parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
JoCam Failure to test Class I medical device to IEC 60601-1-11 IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
R IEC 60601-1 - Different methods of achievement of the isolation IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
K What is mean by Oxygen Rich Environment as per the IEC 60601-1 clause no 11.2.2 IEC 60601 - Medical Electrical Equipment Safety Standards Series 5
K Dielectric strength test as per IEC 60601-1 -Infant incubator IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
A Unused SIP/SOPs - IEC 60601-1 and IEC 60601-1-2 IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
K Proper document of SMPS used in infant warmer for IEC 60601-1 testing IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
K Sequence of testing in IEC 60601-1 IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
B IEC 60601-2-10 - Accuracy of Pulse Parameters - Required Measurement Uncertainty IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
B Has anyone done an IEC 60601-1 gap analysis to IEC 60335? Medical Device and FDA Regulations and Standards News 4
K Question on whether IEC 60601-2-62 standard is applied IEC 60601 - Medical Electrical Equipment Safety Standards Series 4
DitchDigger IEC 60601-1 subclause 5.1 - Adequate evaluation in lieu of testing IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
B IEC 60601 Cl. 8.4.3 - ME EQUIPMENT intended to be connected to a power source by a plug / Plug discharge IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
B Transformer Requirements - IEC 60601-1 vs. IEC 61558-2-15 IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
T Clearance and Creepage according to Subclause 8.9.1 for MOPP IEC 60601-1 IEC 60601 - Medical Electrical Equipment Safety Standards Series 4
A IEC 60601-1 and IEC 60601-2-2 IEC 60601 - Medical Electrical Equipment Safety Standards Series 3

Similar threads

Top Bottom