Exhibit 21.1

|                       |                                            | STATE or
JURISDICTION of
INCORPORATION |                        | PERCENT of
OWNERSHIP               |                          
|---------------------- | ------------------------------------------ | -------------------------------------- | ---------------------- | ---------------------------------- | -------------------------
|VIASYS Healthcare Inc. |                                            | Delaware                               |                        |                                    |                          
|                       | Bird Products Corporation                  |                                        | California             |                                    | 100                      
|                       |                                            | Bird Life Design Corporation           |                        | California                         |                          
|                       | Corpak LLC                                 |                                        | Delaware               |                                    | 100                      
|                       | E.M.E. (Electro Medical Equipment) Limited |                                        | England                |                                    | 100                      
|                       |                                            | EME Medical Limited                    |                        | England                            |                          
|                       |                                            | Synchromed Limited                     |                        | England                            |                          
|                       |                                            | Synchrony Limited                      |                        | England                            |                          
|                       | EME Medical Inc.                           |                                        | Delaware               |                                    | 100                      
|                       |                                            | EME Medical LLC                        |                        | Nevada                             |                          
|                       | Grason-Stadler, Inc.                       |                                        | Massachusetts          |                                    | 100                      
|                       | Nicolet Biomedical Japan Inc.              |                                        | Japan                  |                                    | 100                      
|                       | Nicolet Biomedical Ltd.                    |                                        | England                |                                    | 100                      
|                       | Nicolet Vascular Inc.                      |                                        | Delaware               |                                    | 100                      
|                       | Scimed Limited                             |                                        | England                |                                    | 100                      
|                       | SensorMedics Corporation                   |                                        | California             |                                    | 100                      
|                       |                                            | Erich Jaeger Holding Deutschland GmbH  |                        | Germany                            |                          
|                       |                                            |                                        | VIASYS Healthcare GmbH |                                    | Germany                  
|                       |                                            |                                        |                        | HMS Health Management Systems GmbH |                          
|                       |                                            |                                        |                        | Erich Jaeger Inc.                  |                          
|                       |                                            |                                        |                        | Sensormedics B.V.                  |                          
|                       |                                            |                                        |                        |                                    | Erich Jaeger Benelux B.V.
|                       |                                            |                                        | Erich Jaeger Ges.m.H.  |                                    | Austria                  
|                       |                                            |                                        | Erich Jaeger U.K. Ltd. |                                    | England                  
|                       |                                            |                                        | Nicolet EME GmbH       |                                    | Germany                  
|                       |                                            |                                        | SensorMedics GmbH      |                                    | Germany                  
|                       |                                            | Medical Data Electronics, Inc.         |                        | Delaware                           |                          
|                       | Tecomet Inc.                               |                                        | Massachusetts          |                                    | 100                      
|                       | Thermedics Polymer Products LLC            |                                        | Delaware               |                                    | 100                      
|                       | VIASYS Healthcare S.A.R.L.                 |                                        | France                 |                                    | 100                      
|VIASYS Healthcare Inc. |                                            | Delaware                               |                        |                                    |                          
|                       | Bird Life Design Corporation               |                                        | California             |                                    | 100                      
|                       | Bird Products Corporation                  |                                        | California             |                                    | 100                      
|                       | Grason-Stadler, Inc.                       |                                        | Massachusetts          |                                    | 100                      
|                       | Nicolet Biomedical Japan Inc.              |                                        | Japan                  |                                    | 100                      
|                       | Nicolet Biomedical Ltd.                    |                                        | England                |                                    | 100                      
|                       | Nicolet Vascular Inc.                      |                                        | Delaware               |                                    | 100                      
|                       | SensorMedics Corporation                   |                                        | Delaware               |                                    | 100                      
|                       |                                            | Erich Jaeger Holding Deutschland GmbH  |                        | Germany                            |                          
|                       |                                            |                                        | Erich Jaeger GmbH      |                                    | Germany                  
|                       |                                            |                                        |                        | HMS                                |                          
|                       |                                            |                                        |                        | Erich Jaeger Inc.                  |                          
|                       |                                            |                                        |                        | Sensormedics B.V.                  |                          
|                       |                                            |                                        |                        |                                    | Erich Jaeger Benelux B.V.
|                       |                                            |                                        | Erich Jaeger Ges.m.H.  |                                    | Austria                  
|                       |                                            |                                        | Erich Jaeger U.K. Ltd. |                                    | England                  
|                       |                                            |                                        | Nicolet EME GmbH       |                                    | Germany                  
|                       |                                            |                                        | SensorMedics GmbH      |                                    | Germany                  
|                       |                                            | Medical Data Electronics, Inc.         |                        | Delaware                           |                          
|                       | Tecomet Inc.                               |                                        | Massachusetts          |                                    | 100                      
|                       | Thermo Biomedical Export Inc.              |                                        | Barbados               |                                    | 100                      
|                       | VIASYS Healthcare S.A.R.L.                 |                                        | France                 |                                    | 100                      

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