Drug mixing unit for syringe
AssigneeHysensbio
InventorsJoo Hwang Park, Dong Seol Lee
Life of this patent
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Abstract
A drug mixing unit for a syringe is disclosed. The drug mixing unit contains a barrel member having a first flow path through which a liquid drug is to be pushed in; and a plug member having an insertion part inserted into the barrel member, the insertion part having a second flow path, for drawing out a drug mixture, formed on inner side thereof and a through hole, connected to the second flow path, formed on one surface thereof, wherein the plug member is connected to the barrel member to form a predetermined drug mixing space, the drug mixing space has a drug to be mixed with the liquid drug that has been pushed in through the first flow path. The unit also contain a third flow path, through which the drug mixture flows from the drug mixing space to the through hole.
Claims11
A drug mixing unit comprising:
- a barrel member formed with a first channel through which a drug liquid is introduced;
- and
- a plug member provided with an insertion portion inserted into the barrel member, and formed with a second channel through which a mixed drug is extracted and a through hole connected to the second channel on a surface of the insertion portion,
- wherein the plug member is coupled with the barrel member to form a predetermined drug mixing space, wherein a drug is provided to form the mixed drug with being mixed with the drug liquid introduced through the first channel, and wherein a third channel is formed in an inner surface of the barrel member, through which the mixed drug moves from the drug mixing space to the through hole,
- wherein the barrel member is provided with a protruding type of a spike needle that forms the first channel on an outer surface thereof, wherein the spike needle is provided with a plurality of openings connected to the first channel on the outer surface thereof, and wherein the first channel is provided to have a greater radius as being close to an inner bottom surface of the barrel member,
- wherein the drug mixing space forms a spiral path from a predetermined position spaced apart from the first channel to the third channel, and wherein the spiral path is formed by a partition wall portion continuously provided to contact an outer bottom surface of the insertion portion of the plug member from the inner bottom surface,
- wherein the second channel is connected to a syringe that provides a negative pressure to introduce the drug liquid, and wherein the first channel, the second channel, and the third channel are not directly connected with each other.
Dependencies are inferred from the claim text.