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US 4,784,641 AGranted
Article and method for the oral dosing of fluidic material to patients
AssigneeBio-Pak Associates
InventorDouglas J. White
Life of this patent
Estimating the term…
Abstract
A syringe and method for the oral administration of fluidic material to a patient are disclosed. The syringe includes a cannula at the dispensing end thereof, which cannula is of sufficient size and shape to approximate a nipple so as to provide a feeding surface which encourages normal sucking by a patient. The cannula is provided with a restricted metering aperture at its downstream end to limit the flow rate of fluidic material from the syringe in order to prevent gagging of the patient and to allow the patient to safely draw fluidic material from the syringe in a controlled manner.
Claims20
A syringe for the oral administration of fluidic material to a patient, comprising:
- (a) an elongate hollow barrel for holding a dosage of fluidic material, said barrel having a predetermined outside diameter and having an upstream end and a downstream end;
- (b) a reciprocative plunger operatively connected to a piston slidably received within said barrel from the upstream end thereof;
- and
- (c) a hollow, generally cylindrical cannula formed as a continuation of and integral with said barrel at the downstream end thereof and in axial alignment therewith, said cannula having an upstream sucking portion and having an outside diameter at its upstream end that is no greater than about one-half of said predetermined outside diameter of said barrel at the downstream end thereof to thereby form a shoulder between said downstream end of said barrel and said upstream end of said cannula which serves to assist in limiting penetration of said cannula into the patient's mouth during usage, said cannula being provided with a metering aperture means at its downstream end having an inner diameter less than the inner diameter of said upstream sucking portion to restrict the flow of fluidic material therefrom, under normal hand pressure on said plunger, to a level that is insufficient to cause gagging of said patient during oral administration of fluidic material to said patient, said cannula further having a predetermined length so as to provide a sucking surface for the patient during usage.
1 more element
A syringe for the oral administration of fluidic material to a patient, comprising:
- (a) an elongate hollow barrel for holding a dosage of fluidic material, said barrel having an upstream end and a downstream end;
- (b) a reciprocative plunger operatively connected to a piston slidably received within said barrel from the upstream end thereof;
- and
- (c) a hollow cannula carried by said barrel at the downstream end thereof and in axial alignment therewith, said cannula including a generally cylindrical, elongate upstream sucking portion having a first predetermined outside diameter sized to fit within a patient's mouth and a downstream generally cylindrical, shorter metering portion having a metering aperture therein, said metering portion having a second predetermined outside diameter, said second predetermined outside diameter being no greater than about 1/2 of said first predetermined diameter, and the length of said metering portion being no greater than about 1/3 of the length of said sucking portion, whereby said cannula presents a nipple-like appearance conductive to inducing a sucking action by a patient to whom fluidic material is being orally administered and the flow rate of fluidic material from said cannula to the patient, under normal hand pressure on said plunger, is restricted to a level that is insufficient to cause gagging of the patient.
1 more element
A syringe for the oral administration of fluidic material to a patient, comprising:
- (a) an elongate hollow barrel for holding a dosage of fluidic material, said barrel having an upstream end and a downstream end;
- (b) a reciprocative plunger operatively connected to a piston slidably received within said barrel from the upstream end thereof;
- and
- (c) a hollow, cannula carried by said barrel at the downstream end thereof and in axial alignment therewith, said cannula inclusing a generally cylindrical elongate upstream sucking portion having a predetermined diameter and having a metering aperture adjacent the downstream end thereof, whereby said cannula presents an appearance conductive to inducing a sucking action by a patient two whom fluidic material is being orally administered, said metering aperture having a predetermined diameter less than the internal diameter of said upstream sucking portion so as to restrict the flow of fluidic material therefrom, under normal hand pressure on said plunger, to a level that is insufficient to cause gagging of said patient during oral administration of fluidic material to said patient, and said barrel and said cannula having a unitary construction so as to prevent leakage of said fluidic material therefrom and to provide a smooth and uninterrupted surface to said patient.
1 more element
Dependencies are inferred from the claim text.