초록 ▼

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

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.

대표청구항 ▼

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 secon

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; anda 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, andwherein 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. 2. The drug transferring needle according to claim 1, wherein the first air vent which is the first end of the air passage of the first needle portion is provided on a distal end side of the second needle portion from the second air vent which is the second end of the air passage,wherein a first end of the liquid passage of the second needle portion is connected to the base portion on an opposite side of the liquid pass opening which is a second end of the liquid passage. 3. The drug transferring needle according to claim 2, wherein an interval between the liquid pass opening of the second needle portion and the first air vent of the first needle portion is 3 mm or more and 40 mm or less. 4. The drug transferring needle according to claim 2, wherein an interval between the liquid pass opening of the second needle portion and the first air vent of the first needle portion is 10 mm. 5. The drug transferring needle according to claim 2, wherein an interval between the liquid pass opening of the second needle portion and the intermediate portion is 3 mm or less. 6. The drug transferring needle according to claim 2, wherein when the diameter of the distal end is d1, the diameter of the intermediate portion is d2, and the diameter of the base portion is d3, relation expressions of 1