IEC/TR 80001-2-5:2014

IEC TR 80001-2-5
Edition 1.0 2014-12
TECHNICAL
REPORT

colour
inside
Application of risk management for IT-networks incorporating medical devices –
Part 2-5: Application guidance – Guidance on distributed alarm systems

IEC TR 80001-2-5:2014-12(en)

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IEC TR 80001-2-5


Edition 1.0 2014-12




TECHNICAL



REPORT









colour

inside










Application of risk management for IT-networks incorporating medical devices –

Part 2-5: Application guidance – Guidance on distributed alarm systems



























INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

PRICE CODE
W




ICS 11.040.01; 35.240.80 ISBN 978-2-8322-1969-0



  Warning! Make sure that you obtained this publication from an authorized distributor.

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– 2 – IEC TR 80001-2-5:2014 © IEC 2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Functions of the distribution of ALARM CONDITIONS . 16
4.1 General . 16
4.2 SOURCES and their ALARM CONDITIONS . 17
4.3 INTEGRATOR . 17
4.4 COMMUNICATOR . 17
4.5 MEDICAL IT-NETWORK . 18
5 Types of systems for distributing ALARM CONDITIONS . 18
5.1 General . 18
5.2 DISTRIBUTED INFORMATION SYSTEM ABOUT ALARM CONDITIONS . 19
5.3 DISTRIBUTED ALARM SYSTEM . 19
5.4 DISTRIBUTED ALARM SYSTEM WITH OPERATOR CONFIRMATION . 19
6 RISK MANAGEMENT . 20
6.1 General explanation . 20
6.2 Determining the RESPONSIBLE ORGANIZATION’S objective purpose . 20
6.3 HAZARDS and HAZARDOUS SITUATIONS related to DIS, DAS and CDAS . 21
6.4 Causes and resulting HAZARDOUS SITUATIONS . 21
6.5 RISK CONTROL measures related to the integration of ALARM CONDITIONS . 23
6.5.1 Technical RISK CONTROL measures implemented in equipment . 23
6.5.2 Typical RISK CONTROL measures for implementation by the RESPONSIBLE
ORGANIZATION . 25
6.5.3 Organizational policies and procedures as RISK CONTROL measures for
implementation by the RESPONSIBLE ORGANIZATION . 26
Annex A (informative) Correspondence between the RISK CONTROL measures of this
technical report and IEC 60601-1-8 . 28
Annex B (informative) Types of SOURCES . 29
B.1 MEDICAL DEVICES . 29
B.2 NURSE CALL SYSTEM . 30
ANNEX C (informative) Applicability of types of system for the distribution of ALARM
CONDITIONS . 32
Annex D (informative) Scalability of types of system for the distribution of ALARM
CONDITIONS . 35
Bibliography . 37
Index of defined terms used in this technical report . 38

Figure 1 – Focus of this technical report . 6
Figure 2 – Functions of a MEDICAL IT-NETWORK incorporating SOURCES, an INTEGRATOR
and COMMUNICATORS to distribute ALARM CONDITIONS . 7
Figure C.1 – Cascading structure of system for the distribution of ALARM CONDITIONS . 32
Figure C.2 – Example for INTEGRATOR of a PATIENT monitor with central monitoring
station to distribute ALARM CONDITIONS in a physically isolated IT-NETWORK in a CDAS . 33

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IEC TR 80001-2-5:2014 © IEC 2014 – 3 –
Figure C.3 – Example for INTEGRATOR of a PATIENT monitor to distribute ALARM
CONDITIONS in a NURSE CALL SYSTEM, and via a PBX with handsets . 34
Figure D.1 – Example hospital-wide DISTRIBUTED ALARM SYSTEM . 36

Table 1 – General comparison of system properties for ALARM CONDITION integration . 18
Table A.1 – Correspondence of the technical RISK CONTROL measures of this technical
report for a CDAS and IEC 60601-1-8 for a DAS . 28

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

APPLICATION OF RISK MANAGEMENT FOR IT-NETWORKS
INCORPORATING MEDICAL DEVICES –

Part 2-5: Application guidance –
Guidance on distributed alarm systems

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 80001-2-5, which is a technical report, has been prepared by a joint working group of
subcommittee 62A: Common aspects of electrical equipment used in medical practice, of IEC
technical committee 62: Electrical equipment in medical practice and ISO technical committee
215: Health informatics.

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IEC TR 80001-2-5:2014 © IEC 2014 – 5 –
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
62A/943/DTR 62A/955/RVC

Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
Terms used throughout this technical report that have been defined in Clause 3 appear in
SMALL CAPITALS.
A list of all parts of the IEC 80001 series, published under the general title Application of risk
management for it-networks incorporating medical devices , can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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INTRODUCTION
An increasing number of MEDICAL DEVICES are designed to exchange information electronically
with other equipment, including other MEDICAL DEVICES. Such information is frequently
exchanged through an information technology network (IT-NETWORK) that also transfers data
of a more general nature. IEC 80001-1:2010 addresses RISK MANAGEMENT of IT-NETWORKS
incorporating MEDICAL DEVICES.
ALARM SIGNALS are frequently used to indicate unsatisfactory physiological PATIENT states,
unsatisfactory functional states of the MEDICAL DEVICE or other parts of system to distribute
ALARM CONDITIONS, or to warn the OPERATOR of HAZARDS to the PATIENT or OPERATOR. The
ALARM CONDITIONS that cause these ALARM SIGNALS are often transmitted across the MEDICAL
IT-NETWORK, creating a system to distribute ALARM CONDITIONS.
A system to distribute ALARM CONDITIONS provides great benefits; however, as with any
technology, certain RISKS are introduced that can affect the three KEY PROPERTIES of SAFETY,
EFFECTIVENESS, and DATA AND SYSTEMS SECURITY.
1
This technical report is consistent with other guidance documents of this series [1][2][3][4][5] .
IEC

Figure 1 – Focus of this technical report
_____________
1
 Numbers in square brackets refer to the Bibliography.

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IEC TR 80001-2-5:2014 © IEC 2014 – 7 –
APPLICATION OF RISK MANAGEMENT FOR IT-NETWORKS
INCORPORATING MEDICAL DEVICES –

Part 2-5: Application guidance –
Guidance on distributed alarm systems



1 Scope
This part of IEC 80001, which is a technical report, gives guidance and practical techniques
for RESPONSIBLE ORGANIZATIONS, MEDICAL DEVICE manufacturers and providers of other
information technology in the application of IEC 80001-1:2010 for the RISK MANAGEMENT of
DISTRIBUTED ALARM SYSTEMS. This technical report applies to the transmission of ALARM
CONDITIONS between SOURCES, INTEGRATOR and COMMUNICATORS where at least one SOURCE is
a MEDICAL DEVICE and at least one communication path utilizes a MEDICAL IT-NETWORK.
This technical report provides recommendations for the integration, communication of
responses and REDIRECTION (to another OPERATOR) of ALARM CONDITIONS from one or more
SOURCES to ensure SAFETY and EFFECTIVENESS. DATA AND SYSTEMS SECURITY is an important
consideration for the RISK MANAGEMENT of DISTRIBUTED ALARM SYSTEMS. Figure 2 illustrates the
functions of a MEDICAL IT-NETWORK incorporating SOURCES, an INTEGRATOR and
COMMUNICATORS to distribute ALARM CONDITIONS.
IEC

NOTE This is a functional diagram and does not imply that these functions are in separate components. It is
possible for functionality to be provided in one or more components.
Figure 2 – Functions of a MEDICAL IT-NETWORK incorporating SOURCES,
an INTEGRATOR and COMMUNICATORS to distribute ALARM CONDITIONS

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The following is a typical chain of events. An event is detected by a SOURCE that initiates an
ALARM CONDITION. The SOURCE sends the ALARM CONDITION to the INTEGRATOR. Based on the
RESPONSIBLE ORGANIZATION-established assignment protocol, the INTEGRATOR directs the
ALARM CONDITION to the assigned COMMUNICATOR. The COMMUNICATOR generates the
appropriate ALARM SIGNALS. The INTEGRATOR now waits for an OPERATOR response from the
COMMUNICATOR or for the SOURCE to indicate that the ALARM CONDITION no longer exists.
If the COMMUNICATOR is capable of accepting a response and the OPERATOR responds, the
OPERATOR indicates that it either accepts or rejects responsibility for the ALARM CONDITION. If
the OPERATOR rejects the responsibility, the INTEGRATOR redirects the ALARM CONDITION to a
different COMMUNICATOR (i.e. a different OPERATOR) and might also escalate the priority of the
ALARM CONDITION. Eventually an OPERATOR accepts responsibility for the ALARM CONDITION.
When an OPERATOR has taken appropriate action, the ALARM CONDITION subsequently ends.
Alternately, the ALARM CONDITION could end without OPERATOR action in which case when the
SOURCE notifies the INTEGRATOR that the ALARM CONDITION is no longer present, the
INTEGRATOR instructs the COMMUNICATOR to stop generating ALARM SIGNALS. Should an ALARM
CONDITION remain uncorrected for an extended period of time, the ALARM SYSTEM should cause
the ESCALATION of the ALARM CONDITION, notify additional OPERATORS, etc.
EXAMPLE A pulse oximeter detects a low SpO level in the PATIENT, initiates an ALARM CONDITION and sends that
2
ALARM CONDITION to the INTEGRATOR via a MEDICAL IT-NETWORK. The INTEGRATOR then directs that ALARM CONDITION
to the COMMUNICATOR that is mapped to the clinical OPERATOR assigned to the PATIENT via a MEDICAL IT-NETWORK.
OPERATOR A responds by rejecting responsibility for the ALARM CONDITION. The COMMUNICATOR sends this response
information back to the INTEGRATOR, which then redirects the ALARM CONDITION to the COMMUNICATOR of clinical
OPERATOR B. OPERATOR B then accepts responsibility for the ALARM CONDITION. The COMMUNICATOR sends this
response information back to the INTEGRATOR, which then sends it back to the SOURCE causing an ALARM SIGNAL
inactivation state (e.g. AUDIO PAUSED) to be generated. OPERATOR B adjusts the oxygen concentration in the gas
going to the PATIENT and the ALARM CONDITION ceases (e.g. the event ends).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
NOTE 1 The way in which these referenced documents are cited in normative requirements determines the extent
(in whole or in part) to which they apply.
NOTE 2 Informative references are listed in the bibliography on page 37.
IEC 80001-1:2010, Application of risk management for IT-networks incorporating medical
devices – Part 1: Roles, responsibilities and activities
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE An index of defined terms is found beginning on page 38.
3.1
ALARM CONDITION
state of the ALARM SYSTEM when it has determined that a potential or actual HAZARDOUS
SITUATION exists for which OPERATOR awareness or response is required
Note 1 to entry: An ALARM CONDITION can be invalid, i.e. a FALSE POSITIVE ALARM CONDITION.
Note 2 to entry: An ALARM CONDITION can be missed, i.e. a FALSE NEGATIVE ALARM CONDITION.
[SOURCE: IEC 60601-1-8:2006 and IEC 60601-1-8:2006/AMD1:2012, 3.1]

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IEC TR 80001-2-5:2014 © IEC 2014 – 9 –
3.2
ALARM SETTINGS
ALARM SYSTEM configuration, including but not limited to:
– ALARM LIMITS;
– the characteristics of any ALARM SIGNAL inactivation states; and
– the values of variables or parameters that determine the function of the ALARM SYSTEM
Note 1 to entry: Some algorithmically-determined ALARM SETTINGS can require time to be determined or re-
determined.
[SOURCE: IEC 60601-1-8:2006, 3.8]
3.3
ALARM SIGNAL
type of signal generated by the ALARM SYSTEM or COMMUNICATOR to indicate the presence (or
occurrence) of an ALARM CONDITION
[SOURCE: IEC 60601-1-8:2006, 3.9, modified – added 'or COMMUNICATOR'.]
3.4
ALARM SIGNAL GENERATION DELAY
time from the onset of an ALARM CONDITION to the generation of its ALARM SIGNAL(S)
[SOURCE: IEC 60601-1-8:2006, 3.10]
3.5
ALARM SYSTEM
parts of a MEDICAL DEVICE that detect ALARM CONDITIONS and, as appropriate, generate ALARM
SIGNALS
[SOURCE: IEC 60601-1-8:2006, 3.11, modified – The term MEDICAL DEVICE replaces
'ME EQUIPMENT or a ME SYSTEM'.]
3.6
COMMUNICATOR
COM
function that generates ALARM SIGNALS to notify an OPERATOR
Note 1 to entry: A COM can receive an OPERATOR response.
Note 2 to entry: An OPERATOR response is not limited to direct OPERATOR action.
3.7
DATA AND SYSTEMS SECURITY
operational state of a MEDICAL IT-NETWORK in which information assets (data and systems) are
reasonably protected from degradation of confidentiality, integrity, and availability
Note 1 to entry: Security, when mentioned in this standard, should be taken to include DATA AND SYSTEMS
SECURITY.
Note 2 to entry: DATA AND SYSTEMS SECURITY is assured through a framework of policy, guidance, infrastructure,
and services designed to protect information assets and the systems that acquire, transmit, store, and use
information in pursuit of the organization’s mission.
Note 3 to entry: For the purposes of this technical report, 'reasonably' should be interpreted to mean necessarily.
[SOURCE: IEC 80001-1:2010, 2.5, modified – a third note to entry has been added.]

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3.8
DISTRIBUTED ALARM SYSTEM
DAS
ALARM SYSTEM that involves more than one MEDICAL DEVICE intended for delivery of ALARM
CONDITIONS with technical confirmation
Note 1 to entry: The parts of a DISTRIBUTED ALARM SYSTEM can be widely separated in distance.
Note 2 to entry: A DISTRIBUTED ALARM SYSTEM is intended to notify OPERATORS of the existence of an ALARM
CONDITION.
Note 3 to entry: The requirements for a DAS are described in IEC 60601-1-8:2005 and
IEC 60601-1-8:2005/AMD1:2012, 6.11.2.2.1.
Note 4 to entry: For the purposes of this technical report, technical confirmation means that each element of a
DISTRIBUTED ALARM SYSTEM confirms or guarantees the successful delivery of the ALARM CONDITION to the next
element or appropriate TECHNICAL ALARM CONDITIONS are created as described in IEC 60601-1-8:2006 and
IEC 60601-1-8:2006/AMD1:2012, 6.11.2.2.1.
[SOURCE: IEC 60601-1-8:2006, 3.17, modified – Replaced ‘item of equipment of a ME
SYSTEM’ with ‘MEDICAL DEVICE’, added ‘intended for delivery of ALARM CONDITIONS with technical
confirmation’ and added notes to entry 2, 3 and 4.]
3.9
DISTRIBUTED ALARM SYSTEM WITH OPERATOR CONFIRMATION
CDAS
DISTRIBUTED ALARM SYSTEM that includes the capability to receive an OPERATOR response
3.10
DISTRIBUTED INFORMATION SYSTEM
DISTRIBUTED INFORMATION SYSTEM ABOUT ALARM CONDITIONS
DIS
system that involves at least one MEDICAL DEVICE that is intended to provide information about
ALARM CONDITIONS but does not guarantee delivery of that information
Note 1 to entry: A DIS is not intended to notify OPERATORS of the existence of an ALARM CONDITION as a RISK
CONTROL measure. A DIS is intended to provide information about an ALARM CONDITION to an OPERATOR that has
otherwise been made aware of the existence of the ALARM CONDITION by an ALARM SYSTEM.
Note 2 to entry: This is in terms of IEC 60601-1-8:2005 and IEC 60601-1-8:2005/AMD1:2012, 6.11.2.2.2, a
‘DISTRIBUTED ALARM SYSTEM not intended for confirmed delivery of ALARM CONDITIONS’.
3.11
EFFECTIVENESS
ability to produce the intended result for the PATIENT and the RESPONSIBLE ORGANIZATION
[SOURCE: IEC 80001-1:2010, 2.6]
3.12
ESCALATION
PROCESS by which an ALARM SYSTEM increases the priority of an ALARM CONDITION or increases
the sense of urgency of an ALARM SIGNAL
[SOURCE: IEC 60601-1-8:2006, 3.18]
3.13
FALSE NEGATIVE ALARM CONDITION
absence of an ALARM CONDITION when a valid triggering event has occurred in the PATIENT, the
equipment or the ALARM SYSTEM
Note 1 to entry: An ALARM CONDITION can be rejected or missed because of spurious information produced by the
PATIENT, the PATIENT-equipment interface, other equipment or the ALARM SYSTEM itself.

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IEC TR 80001-2-5:2014 © IEC 2014 – 11 –
[SOURCE: IEC 60601-1-8:2006, 3.20, modified – replaced last ‘equipment’ with ‘ALARM
SYSTEM’ in the note to entry.]
3.14
FALSE POSITIVE ALARM CONDITION
presence of an ALARM CONDITION when no valid triggering event has occurred in the PATIENT,
ALARM SYSTEM
the equipment or the
Note 1 to entry: A FALSE POSITIVE ALARM CONDITION can be caused by spurious information produced by the
PATIENT, the PATIENT-equipment interface, other equipment or the ALARM SYSTEM itself.
[SOURCE: IEC 60601-1-8:2006, 3.21]
3.15
HARM
physical injury or damage to the health of people, or damage to property or the environment,
or reduction in EFFECTIVENESS, or breach of DATA AND SYSTEM SECURITY
[SOURCE: IEC 80001-1:2010, 2.8]
3.16
HAZARD
potential source of HARM
[SOURCE: IEC 80001-1:2010, 2.9]
3.17
HAZARDOUS SITUATION
circumstance in which people, property, or the environment are exposed to one or more
HAZARD(S)
[SOURCE: ISO 14971: 2007, 2.4]
3.18
HIGH PRIORITY
indicating that immediate OPERATOR response is required
Note 1 to entry: The priority is assigned through RISK ANALYSIS.
[SOURCE: IEC 60601-1-8:2006, 3.22]
3.19
INTEGRATOR
INT
SOURCES and COMMUNICATORS or to other
function that handles communication between
INTEGRATORS
Note 1 to entry: An INTEGRATOR can direct or redirect an ALARM CONDITION to another OPERATOR.
Note 2 to entry: An INTEGRATOR can send the acceptance of responsibility from a COMMUNICATOR to a SOURCE.
3.20
INTENDED USE
INTENDED PURPOSE
use for which a product, PROCESS or service is intended according to the specifications,
instructions and information provided by the manufacturer
[SOURCE: IEC 80001-1:2010, 2.10]

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3.21
IT-NETWORK
INFORMATION TECHNOLOGY NETWORK
a system or systems composed of communicating nodes and transmission links to provide
physically linked or wireless transmission between two or more specified communication
nodes
Note 1 to entry: Adapted from IEC 61907:2009, definition 3.1.1.
Note 2 to entry: The scope of the MEDICAL IT-NETWORK in this standard is defined by the RESPONSIBLE
ORGANIZATION based on where the MEDICAL DEVICES in the MEDICAL IT-NETWORK are located and the defined use of
the network. It can contain IT infrastructure, home health and non-clinical contexts. See also 80001-1:2010, 4.3.3.
[SOURCE: IEC 80001-1:2010, 2.12]
3.22
KEY PROPERTIES
three risk managed characteristics (SAFETY, EFFECTIVENESS, and DATA AND SYSTEMS SECURITY)
of MEDICAL IT-NETWORKS
[SOURCE: IEC 80001-1:2010, 2.13]
3.23
LOW PRIORITY
indicating that OPERATOR awareness is required
Note 1 to entry: The priority is assigned through RISK ANALYSIS.
[SOURCE: IEC 60601-1-8:2006, 3.27]
3.24
MEDICAL DEVICE
any instrument, apparatus, implement, machine, appliance, implant, in vitro reagent or
calibrator, software, material or other similar or related article:
a) intended by the manufacturer to be used, alone or in combination, for human beings for
one or more of the specific purpose(s) of:
– diagnosis,
...