VENTED VIAL FOR FREEZE-DRYING AND METHOD OF MINIMIZING CONTAMINATION OF FREEZE-DRIED PRODUCTS

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(12) Patent Application: (11) CA 2178496
ABSTRACT:
The present invention relates to a lyophilization process and a cap (10) intended for vials or use therewith for containers that are subjected to lyophilization conditions where the cap (10), which may be resiliently helped in place or screwed on, includes a plug member (20) movable within a fluid passageway (23) in the cap, the plug member while positioned in the fluid passageway (23) is movable between a first upwardly extending venting position and second downwardly engaging, sealing position whereby fluid from the vial or container is precluded from flowing through the fluid passageway (23) in the cap (10).
(72) Inventors (Country): JONES, C. BRADFORD (United States)
(73) Owners (Country): W. L. GORE & ASSOCIATES, INC. (United States)
(71) Applicants (Country):
(74) Agent: GOWLING LAFLEUR HENDERSON LLP
(45) Issued:
(86) PCT Filing Date: Oct. 14, 1994
(87) PCT Publication Date: Feb. 29, 1996
Examination requested: June 6 , 1996
(51) International Class (IPC): B65D 39/00
F26B 5/06
A61J 1/14
B65D 51/24
Patent Cooperation Treaty (PCT): Yes (85) National Entry: June 6 , 1996
(86) PCT Filing number: PCT/US1994/011701
(87) International publication number: WO1996/006018
(30) Application priority data: Application No. Country Date
08/292,992 United States Aug. 19, 1994
Availability of licence: N/A
Language of filing: English