Prewarning device for instillation of medical liquid

Details Prewarning device for instillation of medical liquid Prewarning device for instillation of medical liquid

A - Human Necessities

61

M

A61M 5/40 (2006.01) A61M 5/162 (2006.01) A61M 5/36 (2006.01) G08B 21/18 (2006.01)

Patent

CA 2424955

A prewarning device for instillation of medical liquid includes a throttling cylinder having a tubular needle connected to an open top thereof. A pointed head portion of the tubular needle is inserted into a medical liquid bottle for the medical liquid to flow into the throttling cylinder via the tubular needle. A portion of the tubular needle between the head portion and the throttling cylinder is transparent for a clamp to clamp therearound. A sensor is provided on the clamp to connect to a warning unit via a wire. The tubular needle defines a downward tapered inner space to receive a float therein. When the medical liquid bottle becomes empty, the float lowers in the tubular needle and is sensed by the sensor for the latter to actuate the warning unit to sound. The lowered float also blocks up the tubular needle to stop air from passing therethrough.

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