Medical liquid container with a toggle film leak tester and meth

Details Medical liquid container with a toggle film leak tester and meth Medical liquid container with a toggle film leak tester and meth

1974-02-26

1976-02-17

Medbery, Aldrich F.

Surgery

Respiratory method or device

Ozone or ion generation

73 52, 73 493, A61J 100

Patent

active

039385191

ABSTRACT:
A parenteral liquid bottle with a sealed leak testing chamber in its closure. This leak testing chamber has an opening sealed off by a protective thermoplastic-metal film with a permanently stretched section extending across the opening. This permanently stretched section of the film maintains either a "concave" or a "convex" shape without a pressure differential across the film. A vacuum source temporarily applied to an external surface of the film causes the film to "toggle" from its concave to its convex position indicating the chamber is properly sealed. Failure to so toggle indicates a leak in the chamber.

REFERENCES:
patent: 1825699 (1931-10-01), Landrum
patent: 2040798 (1936-05-01), Schoonmaker
patent: 2296848 (1942-09-01), Gueffroy
patent: 2383936 (1945-09-01), Hohl
patent: 2856929 (1958-10-01), Gossett et al.
patent: 2969158 (1961-01-01), Bauman
patent: 3030955 (1962-04-01), Gossett et al.
patent: 3047178 (1962-07-01), Poitras et al.
patent: 3736899 (1973-06-01), Manske
patent: 3774602 (1973-11-01), Edwards

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