| 摘要 |
<P>PROBLEM TO BE SOLVED: To reliably prevent a needle body temporarily stored in a protector from projecting from the protector again, in the medical needle with the protector, including: the cylindrical protector 4 for storing the needle main body 1 composed of a needle tube 2 and a hub 3; a spring member 6 for energizing the needle body backward with respect to the protector; and a lock means 42 for enabling the needle main body to be freely locked to a usage position where the needle tube is projected from the front end of the protector, against energizing force of the spring member. <P>SOLUTION: A stopper 45 is arranged at the rear end of the protector 4, which has an inner diameter being smaller than the outer diameter of a step 32 formed on the front end surface of a tube 5 to be externally fitted and connected to a connection tube 31 at the rear end of the hub 3. The front end of the tube 5 is freely extracted to the rear part of the stopper 45, while elastically deforming the front end and the stopper 45. The lengths of the needle body 1 and the protector 4 are set not to allow the front end of the needle tube 2 to be projected from the front end of the protector in a state where the step 32 is abutted onto the stopper 45 from the rear part. <P>COPYRIGHT: (C)2009,JPO&INPIT |
