Patent ID: 6969376

Claim:
A safety indwelling needle, comprised of a metallic inner needle which pierces a skin of a patient and reaches a blood vessel; and a soft outer needle which is located outside the inner needle and places within the blood vessel, comprising: a holder sleeve having a retracting mechanism which can hold the inner needle after a puncture, from a proximal end to a distal end thereof and does not hold the outer needle, characterized in that the retracting mechanism includes: an urging means for urging the inner needle to a side opposite to the outer needle with respect to an axial direction of the holder sleeve; an actuator which moves together with the inner needle when it is withdrawn and has a puncture position retainer for keeping the inner and outer needles ready for the puncture and an inner needle retraction actuating portion for allowing for the retraction actuation of the inner needle; and a slit formed in the holder sleeve for assuring a movement path of the actuator, the urging means is a biasing element that applies a biasing force to the actuator, the inner needle retraction actuating portion is positioned at an outside of the holder sleeve through the slit when the inner and outer needles are readied for the puncture, the puncture position retainer has a puncture position engagement portion whereby the actuator is engaged with the holder sleeve at a position on an outer needle side, the inner needle retraction actuating portion has an actuating portion for releasing the actuator from an engaged state of the puncture position engagement portion into an urged state by the urging means, and the retracting mechanism has an actuating portion housing for enclosing the inner needle retraction actuating portion when the inner needle retraction actuating portion biasedly retracts within and underneath a protective cover portion of the actuating portion housing to prevent both ends of the actuator from being freely accessible resulting in the actuating portion housing preventing the inner needle retraction actuating portion from coming into contact with a hand after retraction of the inner needle.