Surgery – Respiratory method or device – Ozone or ion generation
Patent
1978-11-09
1981-07-14
Michell, Robert W.
Surgery
Respiratory method or device
Ozone or ion generation
417328, 417472, 141 26, 141 67, 128760, 128766, A61M 100
Patent
active
042780896
ABSTRACT:
A device for removing fluids from a wound includes a housing and a passive bellows inside the housing. The bellows can be collapsed and retained in a collapsed or activated state. Upon release from its activated state, the bellows is expanded so as to provide a substantially constant level of negative pressure whereupon fluids from a wound are automatically drawn into and collected within the bellows at a substantially constant rate of suction throughout the range of evacuation. Preferably the bellows is expanded by a constant force ribbon spring which provides a constant force of expansion. Additionally, the housing is preferably transparent with graduations etched thereon permitting the visible inspection and measurement of the fluids removed from the wound.
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Huck Charles M.
Sauer Philip H.
Studer John E.
Howmedica Inc.
Kruter J. L.
Michell Robert W.
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