Suction control chamber for use in chest drainage devices

Details Suction control chamber for use in chest drainage devices Suction control chamber for use in chest drainage devices

A - Human Necessities

61

M

128/106

A61M 1/00 (2006.01) A61M 27/00 (2006.01)

Patent

CA 1311979

Abstract of the Disclosure A chest drainage device is provided for draining fluid and gases from the pleural cavity of a patient. The drainage device has three chambers; a collection chamber, a water seal chamber, and suction control chamber. The suction control chamber includes a first column which has an upper end adapted to be open to the atmosphere, and a second column, which has a substantially larger cross-sectional area than the first column. A filter member on the lower end of the first column disperses the atmospheric air into small diameter bubbles as it enters liquid present in the lower end of the second column. The present invention provides an improved means for muffling the sound of the atmospheric air as it bubbles through the liquid in the second column. Additionally, the present invention provides a means for increasing the accuracy of the vacuum pressure actually being applied to the pleural cavity of the patient as compared to the prescribed vacuum pressure.

612765

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