Sound muffling baffle for drainage device

Details Sound muffling baffle for drainage device Sound muffling baffle for drainage device

F - Mech Eng,Light,Heat,Weapons

01

N

172/22

F01N 1/00 (2006.01) A61M 1/00 (2006.01) G10K 11/16 (2006.01)

Patent

CA 1167385

ABSTRACT OF THE DISCLOSURE A drainage device is provided for draining fluid from a body cavity and for use with a vacuum. The drain- age device has three chambers, a collection chamber, a water seal chamber and a pressure regulating manometer chamber. In operation, air bubbles passing through a body of liquid in the manometer chamber produces a dis- turbing sound. The present invention provides a sound muffling baffle plate including a plurality of fine apertures which is disposed in the lower end portion of the large arm of the manometer chamber, which prevents the formation of large air bubbles and effectively muffles the sounds emanating from the device during use.

337022

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