| 128 / | HD | SURGERY |
|
| 200.24 | DF | RESPIRATORY METHOD OR DEVICE {32} |
| 205.27 | DF | .~ Means for removing substance from respiratory gas {2} |
| 205.29 | DF | .~.~ Particulate filtering {2} |
| 206.12 |  | .~.~.~ Face mask covering a breathing passage {7} |
| 206.13 | DF | .~.~.~.~> Mask attached to ear |
| 206.14 | DF | .~.~.~.~> Mask adhesively attached to face |
| 206.15 | DF | .~.~.~.~> With gas flow control valve |
| 206.16 | DF | .~.~.~.~> With frame, shaping means, reinforcement, or filter formed of wire |
| 206.17 | DF | .~.~.~.~> With separate filter encircling element, or housing, securing filter on mask |
| 206.18 | DF | .~.~.~.~> Covering nose only |
| 206.19 | DF | .~.~.~.~> Body of mask, other than viewing means, formed of porous filter material (e.g., surgical mask formed entirely of cloth, etc.) |