04273124 is referenced by 137 patents and cites 9 patents.

A nasal cannula of the type to be connected to a fluid duct and positioned within the nose of a patient for administering therapeutic fluid. The cannula comprises a resilient bulbous member configured to fit snugly within and against the vestibule wall of one nasal cavity of the patient to form a tight seal with respect thereto while maintaining the other nasal cavity in communication with ambient surroundings. The bulbous member includes a passage therethrough for communicating the fluid duct with the nasal cavity so that fluid supplied through the duct is inhaled through the one nasal cavity and exhaled through the other nasal cavity and/or open mouth.

Title
Nasal cannula
Application Number
6/44582
Publication Number
4273124
Application Date
June 1, 1979
Publication Date
June 16, 1981
Inventor
J Earl Zimmerman
Rte. 3, Box 351, Pine Grove, 17963
PA, US
Agent
Burns Doane Swecker & Mathis
IPC
A61M 3/00
View Original Source