Snyder Laboratories, Inc.

Dean A Ransom

Eugene E Weilbacher

Thomas A Benjamin

A self-contained, independently operable closed wound suction evacuator which is comprised of a box-like internal body structure disposed within a fluid tight, flexible outer pouch. The pouch includes an inlet/outlet valve for providing communication between the interior of the pouch and the atmosphere of the interior of the pouch and a drainage tube. The box-like internal body structure is capable of being in an engaged position or in a disengaged position. In the disengaged position, the internal box-like structure can remain in a flat condition without causing the tensioning member to be stretched or activated. When ready for use, the internal structure can be manually expanded into its box-like structure. When fully expanded the internal structure will become engaged, hence engaging the tensioning member. Subsequent compression of the internal structure to its flat position stretches the tensioning member and activates the evacuator. Upon subsequent release of the compressive force, the tensioning member will cause the internal structure to expand back into its box-like shape, hence developing a vacuum within the evacuator to draw fluid through a drainage tube and into the evacuator. The flexible pouch expands as the internal body structure expands.

Collapsible wound suction evacuator

An evacuator system comprising a compressible container inside of which is positioned a vacuum assist device. The vacuum assist device aids in the expansion of the container and in developing a vacuum in the container upon expansion. The vacuum assist device within the evacuator acts to maintain a substantially constant level of vacuum as the evacuator expands while drawing fluids from a closed wound and collecting the fluids in the evacuator container. The evacuator includes an outlet for providing communication between the interior of the container and the atmosphere, and an inlet providing commuication between the interior of the container and a drainage tube. The evacuator may include a novel valve mechanism which enables the evacuator to be activated, held in an activated position until needed, and then released from the held position for use to draw fluid from a patient.

Closed wound suction evacuator with rotary valve

An evacuator system comprising a compressible container inside of which is positioned a vacuum assist device. The vacuum assist device aids in the expansion of the container and in developing a vacuum in the container upon expansion. The vacuum assist device within the evacuator acts to maintain a substantially constant level of vacuum as the evacuator expands while drawing fluids from a closed wound and collecting the fluids in the evacuator container. The evacuator includes an outlet for providing communication between the interior of the container and the atomosphere, and an inlet providing communication between the interior of the container and a drainage tube. The evacuator may include a novel valve mechanism which enables the evacuator to be activated, held in an activated position until needed, and then released from the held position for use to draw fluid from a patient.

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Dover, OH, United States of America

Dean A Ransom