**Exhibit21.1**
|                                                                                    | STATE or            | ** **     |
|------------------------------------------------------------------------------------|---------------------|----------------|
| ** **                                                                         | **JURISDICTION of** | **PERCENT of** |
| ** **                                                                         | **INCORPORATION**   | **OWNERSHIP**  |
| VIASYS Healthcare Inc.                                                             | Delaware            |           |
| E.M.E. (Electro  Medical Equipment) Limited                                        | England             | 100%           |
| EME Medical  Limited                                                               | England             | 100%           |
| Synchromed  Limited                                                                | England             | 100%           |
| Synchrony  Limited                                                                 | England             | 100%           |
| Nicolet  Biomedical Japan Inc.                                                     | Japan               | 100%           |
| Tecomet Inc.                                                                       | Massachusetts       | 100%           |
| VIASYS  Healthcare S.A.R.L.                                                        | France              | 100%           |
| VIASYS  Healthcare UK Ltd.                                                         | England             | 100%           |
| Scimed Limited                                                                     | England             | 100%           |
| VIASYS Holdings  Inc.                                                              | Delaware            | 100%           |
| Bird Products  Corporation                                                         | California          | 100%           |
| Bird Products  (Japan), Ltd.                                                       | Japan               | 100%           |
| VIASYS  MedSystems Inc.                                                            | Delaware            | 100%           |
| EME Medical Inc.                                                                   | Delaware            | 100%           |
| Micro Medical  Ltd.                                                                | England             | 100%           |
| MicroGas Ltd.                                                                      | England             | 100%           |
| MicroMedical Deutschland  GmbH                                                     | Germany             | 100%           |
| PT Netherlands  BV                                                                 | Netherlands         | 40%            |
| Pulmonetic  Systems Inc.                                                           | Delaware            | 100%           |
| SensorMedics  Corporation                                                          | California          | 100%           |
| VIASYS  Healthcare GmbH                                                            | Germany             | 100%           |
|         Erich  Jaeger U.K. Ltd.            | England             | 100%           |
|         SensorMedics  GmbH                 | Germany             | 100%           |
|         VIASYS  Healthcare Nederlands B.V. | Netherlands         | 100%           |
| Tiara Medical  Systems, Inc.                                                       | Illinois            | 100%           |
| VIASYS  Healthcare Hong Kong Limited                                               | Hong Kong           | 100%           |
| VIASYS  Healthcare Ireland Ltd.                                                    | Ireland             | 94%            |
| VIASYS  Healthcare Island ehf                                                      | Iceland             | 100%           |
| VIASYS  Healthcare Italy SpA                                                       | Italy               | 100%           |
| VIASYS  Healthcare Spain SA                                                        | Spain               | 100%           |
| VIASYS  International Corporation                                                  | Delaware            | 100%           |
| VIASYS Ireland  Ltd.                                                               | Ireland             | 100%           |
| VIASYS  Manufacturing Inc.                                                         | Delaware            | 100%           |
| VIASYS Sleep  Systems LLC                                                          | Delaware            | 100%           |
| VIASYS NeuroCare  France SAS                                                       | France              | 100%           |
| VIASYS NeuroCare  Inc.                                                             | Delaware            | 100%           |
| VIASYS NeuroCare  Manufacturing Inc.                                               | Delaware            | 100%           |
| VIASYS  Respiratory Care Inc.                                                      | Delaware            | 100%           |
| VIASYS Polymer  Products LLC                                                       | Delaware            | 100%           |

 

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