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US 11,951,288 B2Granted
Pulsatile or resonating flush syringe
AssigneeBecton, Dickinson and Company
InventorBryan Bihlmaier
Life of this patent
Estimating the term…
Abstract
A flush syringe for use in maintaining intravenous catheters, wherein the flush syringe can more efficiently and effectively flush the catheters by providing a pulsating, pulsatile, and/or pulsative flow of fluid that can be produced using momentum of the fluid moving. A steady force applied to a plunger while flushing can provide the pulsating, pulsatile, and/or pulsative flow of the fluid to the catheters.
Claims17
A flushing syringe comprising:
- a barrel having a sidewall extending from a proximal end to a distal end and defining a chamber accommodating a fluid;
- a syringe tip disposed at the distal end of the barrel, the fluid exiting the barrel through the syringe tip;
- and
- a wheel configured in the chamber to rotate due to a rotational velocity component in a flow of the fluid from the chamber, and periodically block and unblock the flow of the fluid from the chamber out of the syringe tip, producing a pulsatile flow in the flow of the fluid from the chamber out of the syringe tip,
- wherein the wheel comprises inclined vanes inducing the rotational velocity component in the flow of the fluid.
2 more elements
Dependencies are inferred from the claim text.