| Analyzer, gas, carbon-dioxide, gaseous-phase2 groups | 280 | 2 |
| Cannula, nasal, oxygen / Conserver, oxygen4 groups | 93 | 4 |
| Console, heart-lung machine, cardiopulmonary bypass7 groups | 133 | 7 |
| Generator, oxygen, portable / Unit, liquid-oxygen, portable8 groups | 171 | 8 |
| Laser, neodymium:yag, pulmonary surgery3 groups | 39 | 3 |
| Mask, oxygen6 groups | 110 | 6 |
| Mask, oxygen, non-rebreathing7 groups | 121 | 7 |
| Mask, oxygen, non-rebreathing / Mask, oxygen6 groups | 168 | 6 |
| Prosthesis, laryngeal (taub)6 groups | 108 | 6 |
| Regulator, pressure, gas cylinder / Conserver, oxygen5 groups | 110 | 5 |