| 摘要 |
The present invention provides a protector and an indwelling needle assembly which are capable of accommodating a needle tip of a used needle body by a simple operation to ensure a high level of safety during needle disposal or the like. Provided is a protector displaceable between a first attitude in which the protector can move relatively along a longitudinal direction of a needle body having a sharp needle tip at its tip end and a second attitude in which the relative movement of the protector along the longitudinal direction of the needle body is prohibited in a state where the protector covers the needle tip of the needle body, the protector having a plate-like brake portion having formed therein a hole through which the needle body can penetrate, characterized in that, in the second attitude, an inclination angle of the brake portion relative to the needle body becomes smaller than the inclination angle in the first attitude, so that a frictional force is generated or increased between an inner surface of the hole of the brake portion and an outer peripheral surface of the needle body to thereby prohibit the relative movement of the protector along the longitudinal direction of the needle body.
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