PIEZOELECTRIC DISPENSER WITH A LONGITUDINAL TRANSDUCER AND REPLACEABLE CAPILLARY TUBE
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Apr 29, 2024
filing date -
Apr 29, 2024
priority date (Note) -
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Abstract
A dispenser and methods for transferring liquids are disclosed. The dispenser may include a capillary tube with tip having an aperture, a piezoelectric actuator coupled to the capillary tube at a location. Actuation of the piezoelectric actuator causes a pressure wave to propagate along the capillary tube toward the tip such that radial motion at the location is transmitted as distally extending axial motion of the tip, thereby causing a droplet of a predetermined volume to be ejected from the aperture. In some embodiments, the capillary tube has a modulus of elasticity in a range which dampens acoustical noise from the actuation and provides single drop stability over a range of drop sizes.
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