Surgery – Container for blood or body treating material – or means used... – Filter for purifying or washing air entering container
Patent
1985-09-25
1988-05-10
Rosenbaum, C. Fred
Surgery
Container for blood or body treating material, or means used...
Filter for purifying or washing air entering container
604 45, 604126, 604166, 604411, A61B 1900
Patent
active
047432438
ABSTRACT:
This invention pertains to a molded vent needle housing which is adapted to retain a hydrophobic filter that removes unwanted impurities from the outside air and feeds air to and from the interior of a stoppered vial. This assembly includes a needle and a hub portion in flow communication therewith, this hub adapted for attachment to a syringe. The hydrophobic filter is secured in the molded housing and may be a disc or a cylindrical configuration. The housing has a bore in which the needle shank passes and a rigid sleeve member is secured to provide a small passageway for air flow. Several embodiments are shown, with some having a resilient seal and one having a shrink-wrap protector for both the exposed filter portions and providing a retaining member for an inserted O-ring. The outer sleeve member is removed so that the injecting needle and filled syringe are now ready for use.
REFERENCES:
patent: 2473153 (1949-06-01), Lager
patent: 2541272 (1951-02-01), Murphy
patent: 3157481 (1964-11-01), Bujan
patent: 4096860 (1978-06-01), McLaughlin
patent: 4294594 (1981-10-01), Sloane, Jr. et al.
patent: 4298358 (1981-11-01), Ruschke
patent: 4311137 (1982-01-01), Gerald
patent: 4588403 (1986-05-01), Weiss et al.
Sterile Preparation for the Hospital Pharmacist Avis and Akers, .COPYRGT. 1981.
Colosimo Mark F.
Rosenbaum C. Fred
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