| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a safe syringe capable of quickly recovering a needle into a plunger by vacuum suction after completing medicine injection. <P>SOLUTION: In this safe syringe, an aperture is formed in the front end of a plunger, and a radial conversion part is formed at an internal wall surface near the front end of the plunger. A flexible holder support sheet is regulated in pressure to seal the aperture, and the interior of the plunger is held to low pressure. A needle holder is detachably assembled to the front end of an outer cylinder. When the plunger is pressed in succession after completing medicine injection, a sealing member is connected to the needle holder and impeded, and the plunger advances in succession and is detached from pressure regulation to the sealing member and connected to the outer cylinder and the needle holder. The needle is quickly sucked into the plunger after pressure reduction following the needle holder and the sealing member and built therein to prevent an operator's infection due to being pricked with the needle. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
