Surgery – Means and methods for collecting body fluids or waste material – Aspiration collection container or trap
Patent
1995-06-07
1998-09-15
Weiss, John G.
Surgery
Means and methods for collecting body fluids or waste material
Aspiration collection container or trap
604321, A61M 100
Patent
active
058073582
ABSTRACT:
A blood collection device has a modular suction regulator assembly in the form of an adjustable negative pressure relief valve which controls the level of suction in a collection chamber by admitting air to a short bleed-in passage proximate to a suction connection. The modular assembly is a canister which drops into a receptacle oriented transversely in the collection vessel, and defines a laterally-directed intake manifold which resists blockage. The intake passes centrally through the canister along a path spanned by a filter, past a hat-shaped poppet supported on a compression spring. Fluted and threaded members control the scale and range of poppet response so that the assembly may be calibrated before installation. A face plate covers the installed canister, and radial vanes in the intake manifold double as gripping elements for manual adjustment of the assembly. A bellows meter provides refined suction resolution by linearly advancing across an oblique or curved reference line. Other improvements include a compact and balanced layout of suction canister, seal chamber and collection chamber, and a rigid handle assembly having five faces integral with the device.
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ITHAT, Medi-Vac Corp., 1979.
Cross David
Herweck Steve A.
Karwoski Theodore
Atrium Medical Corporation
Cho David J.
Weiss John G.
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