Dielectrics Industries, Inc.

Atrium Medical Corporation

Scott Cadwallader

Adam S Epstein

Robert W Pekar

Theodore Karwoski

Nicholas Want

Scott Edward Corbeil

An apparatus is provided for indicating the presence of pressure within a collection chamber of a device such as a chest drainage device. The apparatus includes a bladder configured to be positioned within the collection chamber or within another chamber in fluid flow communication with the collection chamber. The bladder has a concavity formed therein and configured to contract or expand in response to pressure in the collection chamber. The apparatus also includes surfaces associated with the bladder that are configured to move with respect to one another upon contraction or expansion of the concavity of the bladder, thereby indicating pressure within the collection chamber.

Method and apparatus for indicating pressure in chest drainage devices

An inflatable air cell pressure transducer. The air cell has a concavity formed therein. The concavity has two edges, wherein increased pressure within the air cell causes contraction of the concavity moving the two edges closer.

Inflatable manometers

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Northampton, MA, United States of America

Scott Cadwallader