| 摘要 |
<p>The present invention resides in a syringe for the oral administration of fluidic material to a patient, including: an elongate hollow barrel (12, 16, 50, 70, 80) for holding a dosage of fluidic material, said barrel having a predetermined outside diameter and having an upstream end and a downstream end; and, a reciprocative plunger (18) operatively connected to a piston (28) slidably received within said barrel from the upstream end thereof; CHARACTERIZED BY a hollow, generally cylindrical cannula (14, 52, 72, 82) 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 (30, 54, 74) 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 (42, 62) 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 (34, 76, 96) 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.</p> |
