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Characteristics of the Pharmaseal continuous flushing device
1Department of Anesthesia, Royal Victoria Hospital Belfast, Northern Ireland.
Anaesthesia
|March 1, 1989
Summary
Continuous flushing devices showed significant flow variations. Driving pressure impacted flow, but arterial or venous pressure did not. Devices delivered approximately 100 ml over 24 hours.
Area of Science:
- Medical Devices
- Fluid Dynamics
- Biomedical Engineering
Background:
- Continuous flushing devices are used in medical applications to maintain patency.
- Understanding their flow characteristics under different pressures is crucial for effective use.
Purpose of the Study:
- To evaluate the flow characteristics of Pharmaseal continuous flushing devices.
- To determine the influence of driving pressure and simulated physiological pressures (arterial and venous) on device flow.
Main Methods:
- Pharmaseal continuous flushing devices were tested.
- Flow characteristics were measured in simulated arterial and venous pressure systems.
- Two different driving pressures were applied during testing.
Main Results:
- A significant variation in flow was observed among the tested devices.
- Increasing driving pressure significantly altered the flow rate.
- Neither simulated arterial nor venous pressure significantly affected the flow.
- The average fluid volume delivered was approximately 100 ml per 24-hour period.
Conclusions:
- Pharmaseal continuous flushing devices exhibit considerable variability in flow performance.
- Driving pressure is a critical factor influencing flow, whereas simulated arterial/venous pressures have minimal impact.
- The findings highlight the need for careful consideration of device variability and driving pressure in clinical settings.