| 摘要 |
A disposable plastic laryngoscope blade (10) is detachably connectable to a hook-on-type conventional metallic laryngoscope handle (12) in conformity with International Standard ISO-7376-1. The blade comprises a rigid plastic housing (14) having a lower, tongue-engaging flange section (16) extending along the length thereof, an upper, teeth-engaging flange section (18), and web sections (20,22) interconnecting the upper and lower flanges to form a hollow cavity (24); an electric bulb(26) having a rating of about 2 to about 2.5 Volts and about 0.35 to about 0.5 Amperes, positioned within the cavity adjacent the distal end of the blade and having positive (30) and negative (32) electrode conductors extending therefrom; a proximal base end (34) provided with hooks (36) or fittings for engaging complementary handle hooks or fittings in compliance with ISO-7376-1, the proximal base being provided with a positive central contact (47) positioned to press against a standard insulated central contact (48) provided in the handle when attached thereto, and elevating into an operating position to maintain conductivity from a power source in the handle and ensure illumination of the bulb while in the engaged operating position; a first current-conducting means connecting the positive electrode conductor to the positive central contact (62) and a second current-conducting means (64) connecting the negative electric conductor with a metallic surface of the handle. <IMAGE> |
