Drug transferring needle and drug transferring method

摘要

A drug transferring needle includes a needle base portion, a first needle portion having therein an air passage, and a second needle portion longer than the first needle portion and arranged parallel to the first needle portion. In the first needle portion, a first air vent being one end of the air passage is provided on a distal end side of the second needle portion from a second air vent being the other end of the air passage. In the second needle portion, one end of a liquid passage is connected to the inside of the needle base portion, and the other end thereof is a liquid pass opening of the second needle portion. The second needle portion has a distal end having the liquid pass opening, a base portion connected to the needle base portion, and an intermediate portion connecting the distal end and the base portion.

主权项

1. A drug transferring needle comprising:
a needle base portion configured to be attached to a tubular end of a syringe; a tubular portion adjacent to the needle base portion; a first needle portion which is covered with the tubular portion and has therein an air passage having a first end and a second end exposed from the tubular portion to an outside of the tubular portion; and a second needle portion which is covered with the tubular portion and has therein a liquid passage, wherein the second needle portion is longer than the first needle portion, an axial direction of the first needle portion and an axial direction of the second needle portion being parallel, wherein, when a portion which includes the second needle portion having a liquid pass opening of the liquid passage is a distal end, a portion which is arranged adjacent to the distal end and includes the tubular portion and the second needle portion is an intermediate portion, and a portion which is arranged adjacent to the intermediate portion and includes the tubular portion, the second needle portion, and the first needle portion is a base portion, a diameter of the intermediate portion being larger than a diameter of the distal end, and the diameter of the intermediate portion being smaller than a diameter of the base portion, and wherein the base portion has a first air vent which is the first end of the air passage and is exposed from the tubular portion to the outside of the tubular portion, and a second air vent which is the second end of the air passage and is exposed from the tubular portion to the outside of the tubular portion.