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US 12,582,775 B2Granted
Pulsatile or resonating flush syringe
AssigneeBecton, Dickinson and Company
InventorBryan Bihlmaier
Life of this patent
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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;
- a plate disposed in the chamber, the plate inducing a rotational velocity component in a flow of the fluid from the chamber;
- and
- a wheel configured in the chamber downstream of the plate to rotate due to the rotational velocity component in the flow of the fluid induced by the plate, 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.
2 more elements
Dependencies are inferred from the claim text.