Patent ID: 7597680

Claim:
A syringe device comprising: a cylindrical connection holder which is partitioned into a first cylindrical part and a second cylindrical part via a partition wall having a through hole formed thereat; a cylindrical and bottomed intermediate holder having a needle inserting hole formed at a tip of a bottom thereof; a first cylindrical and bottomed syringe which contains a solution therein and is unsealably sealed at a tip of a bottom thereof; a second cylindrical and bottomed syringe which contains a soluble pharmaceutical drug therein and is unsealably sealed at a tip of a bottom thereof; and a double ended needle assembly; the double ended needle assembly and the intermediate holder being inserted in this order into the first cylindrical part, the first syringe being inserted into the intermediate holder, and the second syringe being inserted into the second cylindrical part; wherein the double ended needle assembly is locked at an initial position, at which a needle sharp tip on a side of the partition wall cannot project inward of the second cylindrical part by a locking portion, and further, can be moved against a frictional resistance of the locking portion from the initial position to a second position, at which the needle sharp tip passes through the through hole so as to unseal the tip of the bottom of the second syringe; and the intermediate holder is locked at a standby position, at which it cannot act on the double ended needle assembly at the initial position, by locking means, and further, the double ended needle assembly can be movably pushed to the second position by unlocking the lock by unlocking means.