Gas lock for hypodermic

Details Gas lock for hypodermic Gas lock for hypodermic

1977-03-09

1978-11-07

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128221, 128 2F, A61M 500

Patent

active

041240251

ABSTRACT:
A gas lock for a hypodermic unit used to collect blood for blood gas analysis is disclosed. The gas lock comprises a cylindrical container adapted to receive the puncturing end of the hypodermic needle and a semi-solid substance, such as a mixture of petroleum jelly and paraffin, is located within the container and positioned so as to be penetrated by, and to envelop, the puncturing end of the needle. Gases in the blood are thereby prevented from escaping from the hypodermic unit and ambient gases are prevented from entering the unit and contaminating the blood gases. The gas lock further includes a rubber gripping band positioned in the upper portion of the container so as to be aligned with the end of the hypodermic needle adjacent to the syringe. The gripping band facilitates the disconnection of the needle from the syringe so that the syringe, containing the withdrawn blood which is to be analyzed, may be connected to testing apparatus.

REFERENCES:
patent: 2400722 (1946-05-01), Swan
patent: 2862496 (1958-12-01), Hassler et al.
patent: 2940448 (1960-06-01), Furlong, Jr.
patent: 3162195 (1964-12-01), Dick
patent: 3882866 (1975-05-01), Zackheim

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