ISO/TS 17430:2025
(Main)Patient compartment of negative pressure ambulance — Technical specifications
Patient compartment of negative pressure ambulance — Technical specifications
This document specifies the relevant terms and definitions, technical requirements and test methods for the patient compartment of negative pressure ambulances. This document is applicable to ambulances equipped with negative pressure systems.
Compartiment patient pour ambulance à pression négative — Spécifications techniques
General Information
Standards Content (Sample)
Technical
Specification
ISO/TS 17430
First edition
Patient compartment of negative
2025-02
pressure ambulance — Technical
specifications
Compartiment patient pour ambulance à pression négative —
Spécifications techniques
Reference number
© ISO 2025
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements for patient compartment . 2
5 Special requirements for patient compartment . 2
5.1 Sealing and isolation requirements .2
5.2 Requirements for performance of negative pressure .2
5.3 Ventilation frequency requirements .2
5.4 Air directional collection efficiency requirements .2
5.5 Requirements for disinfection system .2
5.6 Requirements for filtration equipment of negative pressure system .3
5.7 Requirements for disinfection device of negative pressure system .3
6 Marking . . 3
7 Manual . 4
8 Test methods . 4
8.1 Sealing performance test .4
8.2 Negative pressure performance test .4
8.3 Ventilation rate test . .4
8.4 Air directional collection efficiency requirements .5
8.4.1 Test equipment and facilities .5
8.4.2 Test procedures .5
8.4.3 Test results .6
8.5 Test for disinfection system.6
8.6 Verification for performance of the filtration device of negative pressure system .6
8.7 Verification for result of disinfection device of negative pressure system .6
Bibliography . 7
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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iv
Introduction
According to the data from World Health Organization, there have been large-scale outbreaks of respiratory
infectious diseases in the past decades, such as SARS, bird flu, H1N1, MERS, CoVID-19, etc., posing a huge
challenge to the public health system. In the fight against respiratory diseases, the concept of negative
pressure ambulances was initiated by public health and epidemic experts. For the establishment and
improvement of the public health emergency rescue system, we have studied the negative pressure
ambulance products with global experts.
A negative pressure ambulance is defined as an ambulance fitted with negative pressure and sterilization
equipment, used for the care, monitoring and transportation for respiratory disease patients. It provides
treatment for patients, isolates sources of transmission and prevents cross infection effectively. Due to
the highly contagious nature of respiratory viruses, conventional ambulances are not up to the task of
transporting. Compared with conventional ambulances, negative pressure ambulances can effectively
block airborne transmission, greatly reduce the risk of infection for medical and public personnel, as well
as the contamination of the surrounding environment, effectively ensuring the safe transport of respiratory
infection patients.
As a special type of ambulance, the difference between a negative pressure ambulance and any other
conventional ambulance mainly lies in the patient compartment, which has functions such as blocking
the source of infection, disinfecting and sterilizing, preventing cross-infection and many others. In the
state of the art, there are no special, systematic and unified technical requirements for negative pressure
ambulances globally. During the production and use phase, the absence of unified regulations and unbalanced
standards for the negative pressure ambulance, especially for its patient compartment, causes great trouble
to the production and leading the risk of use. For the safe use of negative pressure ambulances, it is of
great significance to develop a technical specification for the patient compartment of negative pressure
ambulances in the ISO system as a global reference in line with their differences and characteristics. This
document mainly involves the special requirements and test methods of the patient compartment, including
sealing and isolation, negative pressure, ventilation rate, directional airflow, sterilization system, filtration,
and sterilization device of the negative pressure system. Relative technical standards and test methods are
fully in accordance with the needs of the medical and health industry, to improve the technical level of the
products and provide safer services in the transfer of patients, and promote effective and timely treatment
of patients in the epidemic environment.
In summary, forming a set of global, unified, formal negative pressure ambulance technical specifications
of patient compartments could have a positive impact on controlling infectious respiratory diseases around
the world, reduce the risk of transmission and can better protect medical workers and the surrounding
environment.
v
Technical Specification ISO/TS 17430:2025(en)
Patient compartment of negative pressure ambulance —
Technical specifications
1 Scope
This document specifies the relevant terms and definitions, technical requirements and test methods for the
patient compartment of negative pressure ambulances.
This document is applicable to ambulances equipped with negative pressure systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all their content constitutes
the 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 12219-1, Interior air of road vehicles — Part 1: Whole vehicle test chamber — Specification and method for
the determination of volatile organic compounds in cabin interiors
EN 1789:2020, Medical vehicles and their equipment — Road ambulances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
ambulance
vehicle used to treat, monitor and transfer at least one patient, and is equipped with at least two seats for
trained personnel
3.2
negative pressure ambulance
type of medical emergency vehicle equipped with negative pressure and disinfection facilities with the
purpose to cure, monitor and transfer persons with respiratory infectious diseases
3.3
negative pressure system
device that achieves an air pressure below a specified value of atmospheric pressure in a medical
compartment and has the function of targeted collection and disinfection of exhaled air from patients with
respiratory infectious diseases
Note 1 to entry: It usually consists of a negative pressure fan, a filtration device, a disinfection device and a gas
collection device.
3.4
patient compartment
internal area of the negative pressure ambulance (3.2) which is equipped with a negative pressure system
(3.3) and used for transporting and/or treating patients with respiratory infectious diseases
...
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