Gravity flow cassette

Details Gravity flow cassette Gravity flow cassette

A - Human Necessities

61

M

128/91

A61M 5/14 (2006.01) A61M 5/142 (2006.01)

Patent

CA 1220392

GRAVITY FLOW CASSETTE ABSTRACT OF THE INVENTION A gravity flow cassette for use with an I.V. infusion pump has a fluid inlet, a fluid outlet and a pump chamber with associated pump piston. A valve body having an annular groove and a partial groove parallel thereto is slidably disposed in the cassette for reciprocal movement between a first position and a second position. Engagement of the cassette with the pump firmly holds the valve body in the first position wherein the annular groove is sealed and the valve body can be rotated to alternately provide fluid communication through the partial groove between the inlet and the pump chamber or between the pump chamber and the outlet. Upon disengagement of the cassette from the pump, the valve body can be moved into the second position to seal the partial groove and provide for simultaneous fluid communication through the annular groove between the input, the output and the pump chamber. *************

496032

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