| Subcommittee | Subcommittee Title | Published standards | Standards under development | 
|---|---|---|---|
| ISO/TC 121/SC 1 | Breathing attachments and anaesthetic machines | 15 | 2 | 
| ISO/TC 121/SC 2 | Airway devices and related equipment | 22 | 7 | 
| ISO/TC 121/SC 3 | Respiratory devices and related equipment used for patient care | 53 | 17 | 
| ISO/TC 121/SC 4 | Vocabulary and semantics | 3 | 1 | 
| ISO/TC 121/SC 6 | Medical gas supply systems | 18 | 8 | 
| ISO/TC 121/SC 8 | Suction devices | 4 | 1 | 
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                  | Standard and/or project under the direct responsibility of ISO/TC 121 Secretariat | Stage | ICS | 
|---|---|---|
| 
                           Anaesthetic reservoir bags 
                           | 
                        95.99 | |
| 
                           Oropharyngeal airways 
                           | 
                        95.99 | |
| 
                           Tracheal tube connectors 
                           | 
                        95.99 | |
| 
                           Connectors for respiratory devices 
                           | 
                        30.98 | |
| 
                           Guidance for developing cybersecurity requirements in anaesthetic and respiratory equipment standards 
                           | 
                        30.98 | 
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