Laryngoscope having removable blade assembly containing lamp and

Details Laryngoscope having removable blade assembly containing lamp and Laryngoscope having removable blade assembly containing lamp and

1992-07-28

1994-10-18

Apley, Richard J.

Surgery

Truss

Perineal

128 10, A61B 106

Patent

active

053558707

ABSTRACT:
This laryngoscope has a cylindrical metal casing serving as a handle. An insulated, plastic blade is rotatably mounted near one end thereof on the casing between angularly spaced operating and nonoperating positions. A blade projects from the blade assembly to depress a patient's tongue. Batteries in the casing apply positive electric polarity to an electrode on the casing and negative electric polarity to the casing. A lensed end lamp having a bulb, base and end terminal is mounted on the blade assembly with the terminal in contact with a leaf spring which in turn contacts the electrode when the assembly is rotated to an operating position. A flange on the casing contacts the lamp base to complete a power supply circuit when the blade assembly is rotated to the operating position for lighting the lamp bulb. A light conductive rod extends from the lamp bulb to project light into the patient's larynix while the blade depresses the patient's tongue. A hook on the blade assembly enables easy mounting of the blade assembly on the casing and easy removal therefrom.

REFERENCES:
patent: 2289226 (1942-07-01), Von Foregger
patent: 2354471 (1944-07-01), Macintosh
patent: 2433705 (1947-12-01), Palmeter
patent: 4273112 (1981-06-01), Heine et al.
patent: 4556052 (1985-12-01), Muller
patent: 4557256 (1985-12-01), Bauman
patent: 4565187 (1986-01-01), Soloway
patent: 4570614 (1986-02-01), Bauman
patent: 4583528 (1986-04-01), Bauman
patent: 4901708 (1990-02-01), Lee
patent: 4958624 (1990-09-01), Stone et al.

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