Traditional Chinese medicine — Pulse waveform format

This document specifies the application, in the context of traditional Chinese medicine practice, of medical waveform format encoding rules (MFER) to pulse condition waveform as measured in physiological laboratories, hospitals, bed-wards, pharmacies, clinics, community health centres and home care check-ups using pulse condition devices.

Médecine traditionnelle chinoise — Format de la forme d'onde de pouls

General Information

Status
Published
Publication Date
24-Mar-2020
Current Stage
6060 - International Standard published
Start Date
25-Mar-2020
Completion Date
25-Mar-2020
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ISO 22894:2020 - Traditional Chinese medicine -- Pulse waveform format
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INTERNATIONAL ISO
STANDARD 22894
First edition
2020-03
Traditional Chinese medicine — Pulse
waveform format
Médecine traditionnelle chinoise — Format de la forme d'onde de pouls
Reference number
ISO 22894:2020(E)
ISO 2020
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ISO 22894:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2020 – All rights reserved
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ISO 22894:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Encoding format .................................................................................................................................................................................................... 3

4.1 Primary description............................................................................................................................................................................ 3

4.1.1 General...................................................................................................................................................................................... 3

4.1.2 Sampling attributes ....................................................................................................................................................... 3

4.1.3 Frame attributes ............................................................................................................................................................... 4

4.1.4 Waveform ............................................................................................................................................................................... 5

4.1.5 Channel .................................................................................................................................................................................... 7

4.2 Auxiliary rule ............................................................................................................................................................................................ 8

4.2.1 MWF_WAV (1Eh): waveform data ..................................................................................................................... 8

4.2.2 MWF_FLT (11h): filter information ................................................................................................................. 8

4.2.3 MWF_END (80h): end of description ............................................................................................................. 9

4.2.4 MWF_TXC (03h): character code ....................................................................................................................... 9

5 Supplemental information ......................................................................................................................................................................... 9

5.1 MWF_TIM (85h): measurement date/time .................................................................................................................... 9

5.2 Information description ...............................................................................................................................................................10

5.2.1 MWF_NTE (16h): comment .................................................................................................................................10

5.2.2 MWF_PRE (40h): preamble .................................................................................................................................10

5.2.3 MWF_MAN (17h): manufacturer information of medical device .......................................10

5.2.4 MWF_UID (87h): unique identifier ...............................................................................................................11

5.3 Patient information ..........................................................................................................................................................................11

5.3.1 General...................................................................................................................................................................................11

5.3.2 MWF_PNM (81h): patient name ......................................................................................................................11

5.3.3 MWF_PID (82h): patient ID .................................................................................................................................12

5.3.4 MWF_AGE (83h): patient date of birth ......................................................................................................12

5.3.5 MWF_SEX (84h): gender ........................................................................................................................................12

Annex A (Informative) Example of pulse condition waveform encoding rule ........................................................13

Bibliography .............................................................................................................................................................................................................................14

© ISO 2020 – All rights reserved iii
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ISO 22894:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see

www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 249, Traditional Chinese medicine.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
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INTERNATIONAL STANDARD ISO 22894:2020(E)
Traditional Chinese medicine — Pulse waveform format
1 Scope

This document specifies the application, in the context of traditional Chinese medicine practice,

of medical waveform format encoding rules (MFER) to pulse condition waveform as measured in

physiological laboratories, hospitals, bed-wards, pharmacies, clinics, community health centres and

home care check-ups using pulse condition devices.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 19614, Traditional Chinese medicine — Pulse graph force transducer
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 19614 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
pulse-taking location
place on the radial artery where the pulse condition is measured

Note 1 to entry: According to traditional Chinese medicine theory, there are three such places (cun/inch, guan/

bar and chi/cubit) all over the radial artery, see Figure 1.
© ISO 2020 – All rights reserved 1
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ISO 22894:2020(E)
Key
1 left hand
2 right hand
3 cun/inch
4 guan/bar
5 chi/cubit
Figure 1 — Pulse-taking location
3.2
channel
individual waveform data group from the pulse graph force transducer (3.3)
3.3
pulse graph force transducer

device that can detect pulsation of the radial artery and its peripheral tissues as a mechanical quantity

and convert it into an electrical signal output according to a certain pattern for the purpose of

traditional Chinese medicine pulse condition acquisition

Note 1 to entry: Transducers involved in this document only refer to pressure or force transducers.

[SOURCE: ISO 19614:2017, 3.1]
3.4
one signal transducer
pulse graph force transducer (3.3) with only one channel (see Figure 2)
Key
1 signal transducer with auxiliary plan
2 signal transducer without auxiliary plan
Figure 2 — One signal transducer
2 © ISO 2020 – All rights reserved
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ISO 22894:2020(E)
3.5
array signal transducer
pulse graph force transducer (3.3) with multi-channel (see Figure 3)

Note 1 to entry: Array signal transducer can be further divided into line array transducer and cross array

transducer.

Note 2 to entry: Line array transducer can be further divided into horizontal parallelism line array transducer

and vertical parallelism line array transducer.
Key
1 array signal transducer with auxiliary plan
2 array signal transducer without auxiliary plan
Figure 3 — Array signal transducer
4 Encoding format
4.1 Primary description
4.1.1 General

This document provides encoding rules for pulse waveform. In addition, together with encoding of

information of recognition for waveform, measurement information and interpretation information is

provided, but these are all optional functions and are dependent on each implementation concept.

NOTE Interpretation code or measurement value might be described by other standards such as

HL7 or XML.

All the symbols and their tags used in this document are specified in ISO 22077-1.

4.1.2 Sampling attributes
4.1.2.1 General

Sampling attributes, including sampling rate and resolution, are given in Tables 1 to 4. An example of

the encoded data and its explanation can be found in Annex A, Table A.1.
4.1.2.2 MWF_IVL (0Bh): Sampling rate

This tag indicates the frequency or sampling interval for the medical waveform sampled (see Table 1).

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ISO 22894:2020(E)
Table 1 — Sampling rate
Symbol Tag Length Value
Bytes
MWF_IVL 11d/0Bh ≤ 6 Unit (1)
Exponent (1)
Mantissa (≤4)
The units may be frequency in hertz or time in seconds (see Table 2).
Table 2 — Sampling rate unit
Unit Code
Frequency Hz 0d
Time interval s 1d
^−3

EXAMPLE If the code is 0B 04 01 FD 00 01, that means the sampling rate is equal to 1*10 and the units

are 1 ms.
4.1.2.3 MWF_SEN (0Ch): Sampling resolution

This tag indicates the resolution, minimum bits, for the medical waveform sampled (see Table 3).

Table 3 — Sampling resolution
Symbol Tag Length Value
Bytes
MWF_SEN 12d/0Ch ≤ 6 Unit (1)
Exponent (1)
Mantissa (≤4)

The units should be force in newtons, mass in kilograms, pressure in Pascals and voltage in volts (see

Table 4).
Table 4 — Sampling resolution units
Unit Code Default
Voltage V 0d None
Force N 6d None
Pressure Pa 2d None
Mass kg 16d None
4.1.3 Frame attributes
4.1.3.1 Gener
...

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