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US 4,306,973 AGranted
Medical liquid dispenser with filter means
OwnerSoji Ishikawainventor
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OwnerSoji Ishikawainventor
Estimating the term…
A medical liquid dispensing device such as a medical administering dripset or a syringe having a liquid conducting tube comprising at least one partition element forming in the liquid conducting tube, at least two liquid passageways longitudinally separate from each other across the partition element, and at least one elongated microporous tubular element which extends in part in at least one of the two liquid passageways in the liquid conducting tube from the partition element. The tubular element has at least one longitudinal passageway closed in at least one of the liquid passageways in the liquid conducting tube. Thus, the microporous tubular element serves as a microporous filter medium for collecting on its inner and/or outer peripheral surfaces the solid particles contained in a liquid medicament or transfusion blood passed through the microporous tubular element.
A medical liquid dispensing device comprising an elongated, hollow liquid conducting member, at least two partition elements which are securely held in position within said liquid conducting member and which are longitudinally spaced apart from each other for forming in the liquid conducting member at least three separate liquid passageways consisting of an incoming liquid passageway longitudinally extending outwardly from one of said two partition elements, an outgoing liquid passageway longitudinally extending outwardly from the other of the two partition elements, and an intermediate liquid passageway longitudinally extending between the two partition elements, and at least one microporous tubular element which longitudinally extends in part through said intermediate passageway and which is formed with at least two longitudinal passageways which are separate from each other in said intermediate liquid passageway in said liquid conducting member.
Dependencies are inferred from the claim text.