Oasis 3600-100

Express 4000-100N

True water seal –It is dependent upon staying upright to protect patient (i.e. seal is lost during knock-over).

Dry seal valve – water is not necessary for dry seal valve to operate and it is not position-sensitive.

Calibrated water seal (up to -20cmH2O).

Not calibrated.  Large visible vacuum indicator. Check mark is observed when vacuum is present (which be similar to the water seal rising in true water seal).

Automatic high negative pressure protection.  Allows patient to develop as much intra-thoracic pressure as is necessary to complete respiration (10-12 seconds), yet protects patient against pressures associated with milking and stripping.

Mechanical automatic high negative pressure relief.  This allows patient to develop as much intrathoracic pressure necessary to complete respiration yet protects patient against pressures associated with milking and stripping.

Knock-over nozzles for fully recoverable water seal (i.e. increased patient safety) and less fluid inter-chamber spill. 

Knock-over nozzles for fully recoverable air leak monitor chamber and less fluid inter-chamber spill. Dry seal valve protects patient even during knock-over. 

Pre-attached, pre-measured sterile water ampoule for quick and accurate set-up. (45cc of sterile water provided).

Pre-attached, pre-measured sterile water syringe for quick and accurate set-up. (30cc of sterile water provided).