SYRINGE WITH NEEDLE, PREFILLED SYRINGE, AND MEDICAL LIQUID ADMINISTRATION TOOL USING THE SAME

摘要

A syringe is disclosed, which includes a needle having an outer cylinder including an outer cylinder body part and a needle fixing part provided at a distal end part of the outer cylinder body part; an injection needle 6 having a puncturing needle tip at a distal end and fixed to the needle fixing part; and a gasket housed in the outer cylinder. The injection needle is such a tapered part holding injection needle that a puncturing time piercing part having a needle tip has an outer diameter of 0.42 mm or less and has a thickness of 0.1 mm or less, or the injection needle is such a small diameter thin injection needle as to have a thickness of 0.04 mm or less. The gasket includes a gasket body and a soft coating provided on a portion that comes into contact with the inner surface of the outer cylinder.

主权项

1. A syringe with needle comprising:
an outer cylinder including an outer cylinder body part and a needle fixing part provided at a distal end part of the outer cylinder body part; an injection needle having a puncturing needle tip at a distal end, a proximal end part of the injection needle being fixed to the needle fixing part of the outer cylinder; and a gasket housed in the outer cylinder and capable of sliding within the outer cylinder in a liquid-tight state, wherein the injection needle is such a tapered part holding injection needle that a puncturing time piercing part having the puncturing needle tip has an outer diameter of 0.42 mm or less and has a thickness of 0.1 mm or less, the tapered part holding injection needle having a proximal end with a greater outer diameter than the puncturing time piercing part, or the injection needle is such a small diameter ultrathin injection needle that a puncturing time piercing part having the puncturing needle tip has an outer diameter of 0.42 mm or less and has a thickness of 0.04 mm or less, the small diameter ultrathin injection needle extending from a distal end to a proximal end with substantially the same outer diameter, and the gasket includes a gasket body made of an elastic body and a soft coating provided on at least a portion that comes into contact with the inner surface of the outer cylinder, the soft coating having a liquid-tight sliding property with respect to the inner surface of the outer cylinder.